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Subject: [Boost-commit] svn:boost r79632 - in trunk: boost/phoenix/core boost/phoenix/core/detail boost/phoenix/core/detail/preprocessed boost/phoenix/operator/detail boost/phoenix/operator/preprocessed boost/phoenix/scope boost/phoenix/scope/preprocessed boost/phoenix/statement boost/proto boost/proto/detail boost/proto/transform libs/proto/example libs/proto/test
From: eric_at_[hidden]
Date: 2012-07-21 01:50:55
Author: eric_niebler
Date: 2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
New Revision: 79632
URL: http://svn.boost.org/trac/boost/changeset/79632
Log:
add support for transform environment with slots for key/value pairs
Added:
   trunk/boost/proto/detail/any.hpp   (contents, props changed)
   trunk/boost/proto/detail/is_noncopyable.hpp   (contents, props changed)
   trunk/boost/proto/detail/static_const.hpp   (contents, props changed)
   trunk/boost/proto/transform/env.hpp   (contents, props changed)
   trunk/libs/proto/test/env_var.cpp   (contents, props changed)
   trunk/libs/proto/test/external_transforms.cpp   (contents, props changed)
Text files modified: 
   trunk/boost/phoenix/core/actor.hpp                                  |     2                                         
   trunk/boost/phoenix/core/arity.hpp                                  |     2                                         
   trunk/boost/phoenix/core/detail/actor_result_of.hpp                 |     4                                         
   trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_10.hpp |    22 ++++----                                
   trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_20.hpp |    42 ++++++++--------                        
   trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_30.hpp |    62 ++++++++++++------------                
   trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_40.hpp |    82 ++++++++++++++++----------------        
   trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_50.hpp |   102 ++++++++++++++++++++--------------------
   trunk/boost/phoenix/core/environment.hpp                            |    12 ++--                                    
   trunk/boost/phoenix/core/is_nullary.hpp                             |     2                                         
   trunk/boost/phoenix/core/meta_grammar.hpp                           |     4                                         
   trunk/boost/phoenix/core/value.hpp                                  |     2                                         
   trunk/boost/phoenix/operator/detail/mem_fun_ptr_eval_result_of.hpp  |     2                                         
   trunk/boost/phoenix/operator/preprocessed/member_10.hpp             |    18 +++---                                  
   trunk/boost/phoenix/operator/preprocessed/member_20.hpp             |    38 +++++++-------                          
   trunk/boost/phoenix/operator/preprocessed/member_30.hpp             |    58 +++++++++++-----------                  
   trunk/boost/phoenix/operator/preprocessed/member_40.hpp             |    78 +++++++++++++++---------------          
   trunk/boost/phoenix/operator/preprocessed/member_50.hpp             |    98 +++++++++++++++++++-------------------  
   trunk/boost/phoenix/scope/lambda.hpp                                |     4                                         
   trunk/boost/phoenix/scope/let.hpp                                   |     4                                         
   trunk/boost/phoenix/scope/preprocessed/lambda_10.hpp                |     4                                         
   trunk/boost/phoenix/scope/preprocessed/lambda_20.hpp                |     4                                         
   trunk/boost/phoenix/scope/preprocessed/lambda_30.hpp                |     4                                         
   trunk/boost/phoenix/scope/preprocessed/lambda_40.hpp                |     4                                         
   trunk/boost/phoenix/scope/preprocessed/lambda_50.hpp                |     4                                         
   trunk/boost/phoenix/statement/switch.hpp                            |     4                                         
   trunk/boost/phoenix/statement/try_catch.hpp                         |    10 +-                                      
   trunk/boost/proto/args.hpp                                          |    45 ++---------------                       
   trunk/boost/proto/detail/decltype.hpp                               |    64 ------------------------                
   trunk/boost/proto/detail/poly_function.hpp                          |    27 ++++++++--                              
   trunk/boost/proto/proto_fwd.hpp                                     |    38 +++++++++++++-                          
   trunk/boost/proto/transform.hpp                                     |     1                                         
   trunk/boost/proto/transform/arg.hpp                                 |    31 +++--------                             
   trunk/boost/proto/transform/impl.hpp                                |    75 +++++++++++++++++++++++++---            
   trunk/boost/proto/transform/when.hpp                                |    18 ++++--                                  
   trunk/libs/proto/example/external_transforms.cpp                    |     2                                         
   trunk/libs/proto/test/Jamfile.v2                                    |     2                                         
   trunk/libs/proto/test/protect.cpp                                   |    65 ++++++++++++++++++++-----               
   38 files changed, 541 insertions(+), 499 deletions(-)
Modified: trunk/boost/phoenix/core/actor.hpp
==============================================================================
--- trunk/boost/phoenix/core/actor.hpp	(original)
+++ trunk/boost/phoenix/core/actor.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -261,7 +261,7 @@
                 Env const &
               , default_actions const &
             >::type
-          , int
+          , proto::empty_env
         >::result_type
         eval(Env const & env) const
         {
Modified: trunk/boost/phoenix/core/arity.hpp
==============================================================================
--- trunk/boost/phoenix/core/arity.hpp	(original)
+++ trunk/boost/phoenix/core/arity.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -39,7 +39,7 @@
                         mpl::int_<0>
                       , boost::phoenix::arity
                     >&
-                  , int
+                  , proto::empty_env
                 >::result_type::value
             >
         {};
Modified: trunk/boost/phoenix/core/detail/actor_result_of.hpp
==============================================================================
--- trunk/boost/phoenix/core/detail/actor_result_of.hpp	(original)
+++ trunk/boost/phoenix/core/detail/actor_result_of.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -50,7 +50,7 @@
                         vector1<const ::boost::phoenix::actor<Expr> *> &
                       , default_actions
                     > const &
-                  , int
+                  , proto::empty_env
                 >::result_type
                 type;
         };
@@ -97,7 +97,7 @@
                             )<const ::boost::phoenix::actor<Expr> *, BOOST_PHOENIX_A> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
Modified: trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_10.hpp
==============================================================================
--- trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_10.hpp	(original)
+++ trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_10.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -21,7 +21,7 @@
                         vector1<const ::boost::phoenix::actor<Expr> *> &
                       , default_actions
                     > const &
-                  , int
+                  , proto::empty_env
                 >::result_type
                 type;
         };
@@ -55,7 +55,7 @@
                             vector2<const ::boost::phoenix::actor<Expr> *, A0> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -77,7 +77,7 @@
                             vector3<const ::boost::phoenix::actor<Expr> *, A0 , A1> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -99,7 +99,7 @@
                             vector4<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -121,7 +121,7 @@
                             vector5<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -143,7 +143,7 @@
                             vector6<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -165,7 +165,7 @@
                             vector7<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -187,7 +187,7 @@
                             vector8<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -209,7 +209,7 @@
                             vector9<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -231,7 +231,7 @@
                             vector10<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -253,7 +253,7 @@
                             vector11<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
Modified: trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_20.hpp
==============================================================================
--- trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_20.hpp	(original)
+++ trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_20.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -21,7 +21,7 @@
                         vector1<const ::boost::phoenix::actor<Expr> *> &
                       , default_actions
                     > const &
-                  , int
+                  , proto::empty_env
                 >::result_type
                 type;
         };
@@ -55,7 +55,7 @@
                             vector2<const ::boost::phoenix::actor<Expr> *, A0> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -77,7 +77,7 @@
                             vector3<const ::boost::phoenix::actor<Expr> *, A0 , A1> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -99,7 +99,7 @@
                             vector4<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -121,7 +121,7 @@
                             vector5<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -143,7 +143,7 @@
                             vector6<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -165,7 +165,7 @@
                             vector7<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -187,7 +187,7 @@
                             vector8<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -209,7 +209,7 @@
                             vector9<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -231,7 +231,7 @@
                             vector10<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -253,7 +253,7 @@
                             vector11<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -275,7 +275,7 @@
                             vector12<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -297,7 +297,7 @@
                             vector13<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -319,7 +319,7 @@
                             vector14<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -341,7 +341,7 @@
                             vector15<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -363,7 +363,7 @@
                             vector16<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -385,7 +385,7 @@
                             vector17<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -407,7 +407,7 @@
                             vector18<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -429,7 +429,7 @@
                             vector19<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -451,7 +451,7 @@
                             vector20<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -473,7 +473,7 @@
                             vector21<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
Modified: trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_30.hpp
==============================================================================
--- trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_30.hpp	(original)
+++ trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_30.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -21,7 +21,7 @@
                         vector1<const ::boost::phoenix::actor<Expr> *> &
                       , default_actions
                     > const &
-                  , int
+                  , proto::empty_env
                 >::result_type
                 type;
         };
@@ -55,7 +55,7 @@
                             vector2<const ::boost::phoenix::actor<Expr> *, A0> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -77,7 +77,7 @@
                             vector3<const ::boost::phoenix::actor<Expr> *, A0 , A1> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -99,7 +99,7 @@
                             vector4<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -121,7 +121,7 @@
                             vector5<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -143,7 +143,7 @@
                             vector6<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -165,7 +165,7 @@
                             vector7<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -187,7 +187,7 @@
                             vector8<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -209,7 +209,7 @@
                             vector9<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -231,7 +231,7 @@
                             vector10<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -253,7 +253,7 @@
                             vector11<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -275,7 +275,7 @@
                             vector12<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -297,7 +297,7 @@
                             vector13<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -319,7 +319,7 @@
                             vector14<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -341,7 +341,7 @@
                             vector15<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -363,7 +363,7 @@
                             vector16<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -385,7 +385,7 @@
                             vector17<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -407,7 +407,7 @@
                             vector18<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -429,7 +429,7 @@
                             vector19<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -451,7 +451,7 @@
                             vector20<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -473,7 +473,7 @@
                             vector21<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -495,7 +495,7 @@
                             vector22<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -517,7 +517,7 @@
                             vector23<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -539,7 +539,7 @@
                             vector24<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -561,7 +561,7 @@
                             vector25<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -583,7 +583,7 @@
                             vector26<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -605,7 +605,7 @@
                             vector27<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -627,7 +627,7 @@
                             vector28<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -649,7 +649,7 @@
                             vector29<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -671,7 +671,7 @@
                             vector30<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -693,7 +693,7 @@
                             vector31<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
Modified: trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_40.hpp
==============================================================================
--- trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_40.hpp	(original)
+++ trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_40.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -21,7 +21,7 @@
                         vector1<const ::boost::phoenix::actor<Expr> *> &
                       , default_actions
                     > const &
-                  , int
+                  , proto::empty_env
                 >::result_type
                 type;
         };
@@ -55,7 +55,7 @@
                             vector2<const ::boost::phoenix::actor<Expr> *, A0> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -77,7 +77,7 @@
                             vector3<const ::boost::phoenix::actor<Expr> *, A0 , A1> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -99,7 +99,7 @@
                             vector4<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -121,7 +121,7 @@
                             vector5<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -143,7 +143,7 @@
                             vector6<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -165,7 +165,7 @@
                             vector7<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -187,7 +187,7 @@
                             vector8<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -209,7 +209,7 @@
                             vector9<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -231,7 +231,7 @@
                             vector10<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -253,7 +253,7 @@
                             vector11<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -275,7 +275,7 @@
                             vector12<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -297,7 +297,7 @@
                             vector13<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -319,7 +319,7 @@
                             vector14<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -341,7 +341,7 @@
                             vector15<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -363,7 +363,7 @@
                             vector16<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -385,7 +385,7 @@
                             vector17<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -407,7 +407,7 @@
                             vector18<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -429,7 +429,7 @@
                             vector19<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -451,7 +451,7 @@
                             vector20<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -473,7 +473,7 @@
                             vector21<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -495,7 +495,7 @@
                             vector22<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -517,7 +517,7 @@
                             vector23<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -539,7 +539,7 @@
                             vector24<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -561,7 +561,7 @@
                             vector25<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -583,7 +583,7 @@
                             vector26<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -605,7 +605,7 @@
                             vector27<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -627,7 +627,7 @@
                             vector28<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -649,7 +649,7 @@
                             vector29<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -671,7 +671,7 @@
                             vector30<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -693,7 +693,7 @@
                             vector31<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -715,7 +715,7 @@
                             vector32<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -737,7 +737,7 @@
                             vector33<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -759,7 +759,7 @@
                             vector34<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -781,7 +781,7 @@
                             vector35<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -803,7 +803,7 @@
                             vector36<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -825,7 +825,7 @@
                             vector37<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -847,7 +847,7 @@
                             vector38<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -869,7 +869,7 @@
                             vector39<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -891,7 +891,7 @@
                             vector40<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -913,7 +913,7 @@
                             vector41<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
Modified: trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_50.hpp
==============================================================================
--- trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_50.hpp	(original)
+++ trunk/boost/phoenix/core/detail/preprocessed/actor_result_of_50.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -21,7 +21,7 @@
                         vector1<const ::boost::phoenix::actor<Expr> *> &
                       , default_actions
                     > const &
-                  , int
+                  , proto::empty_env
                 >::result_type
                 type;
         };
@@ -55,7 +55,7 @@
                             vector2<const ::boost::phoenix::actor<Expr> *, A0> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -77,7 +77,7 @@
                             vector3<const ::boost::phoenix::actor<Expr> *, A0 , A1> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -99,7 +99,7 @@
                             vector4<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -121,7 +121,7 @@
                             vector5<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -143,7 +143,7 @@
                             vector6<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -165,7 +165,7 @@
                             vector7<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -187,7 +187,7 @@
                             vector8<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -209,7 +209,7 @@
                             vector9<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -231,7 +231,7 @@
                             vector10<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -253,7 +253,7 @@
                             vector11<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -275,7 +275,7 @@
                             vector12<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -297,7 +297,7 @@
                             vector13<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -319,7 +319,7 @@
                             vector14<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -341,7 +341,7 @@
                             vector15<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -363,7 +363,7 @@
                             vector16<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -385,7 +385,7 @@
                             vector17<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -407,7 +407,7 @@
                             vector18<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -429,7 +429,7 @@
                             vector19<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -451,7 +451,7 @@
                             vector20<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -473,7 +473,7 @@
                             vector21<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -495,7 +495,7 @@
                             vector22<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -517,7 +517,7 @@
                             vector23<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -539,7 +539,7 @@
                             vector24<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -561,7 +561,7 @@
                             vector25<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -583,7 +583,7 @@
                             vector26<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -605,7 +605,7 @@
                             vector27<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -627,7 +627,7 @@
                             vector28<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -649,7 +649,7 @@
                             vector29<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -671,7 +671,7 @@
                             vector30<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -693,7 +693,7 @@
                             vector31<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -715,7 +715,7 @@
                             vector32<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -737,7 +737,7 @@
                             vector33<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -759,7 +759,7 @@
                             vector34<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -781,7 +781,7 @@
                             vector35<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -803,7 +803,7 @@
                             vector36<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -825,7 +825,7 @@
                             vector37<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -847,7 +847,7 @@
                             vector38<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -869,7 +869,7 @@
                             vector39<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -891,7 +891,7 @@
                             vector40<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -913,7 +913,7 @@
                             vector41<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -935,7 +935,7 @@
                             vector42<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -957,7 +957,7 @@
                             vector43<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -979,7 +979,7 @@
                             vector44<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -1001,7 +1001,7 @@
                             vector45<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -1023,7 +1023,7 @@
                             vector46<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -1045,7 +1045,7 @@
                             vector47<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44 , A45> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -1067,7 +1067,7 @@
                             vector48<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44 , A45 , A46> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -1089,7 +1089,7 @@
                             vector49<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44 , A45 , A46 , A47> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -1111,7 +1111,7 @@
                             vector50<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44 , A45 , A46 , A47 , A48> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
@@ -1133,7 +1133,7 @@
                             vector51<const ::boost::phoenix::actor<Expr> *, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44 , A45 , A46 , A47 , A48 , A49> &
                           , default_actions
                         > const &
-                      , int
+                      , proto::empty_env
                     >::result_type
                 type;
         };
Modified: trunk/boost/phoenix/core/environment.hpp
==============================================================================
--- trunk/boost/phoenix/core/environment.hpp	(original)
+++ trunk/boost/phoenix/core/environment.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -300,8 +300,8 @@
     };
 
     template <typename Expr, typename State>
-    struct _env::impl<Expr, State, int>
-        : proto::transform_impl<Expr, State, int>
+    struct _env::impl<Expr, State, proto::empty_env>
+        : proto::transform_impl<Expr, State, proto::empty_env>
     {
             typedef
                 typename fusion::result_of::at_c<
@@ -322,7 +322,7 @@
 
     template <typename Expr, typename State>
     struct _env::impl<Expr, State, unused>
-        : _env::impl<Expr, State, int>
+        : _env::impl<Expr, State, proto::empty_env>
     {};
 
     template <typename Context>
@@ -362,8 +362,8 @@
     };
 
     template <typename Expr, typename State>
-    struct _actions::impl<Expr, State, int>
-        : proto::transform_impl<Expr, State, int>
+    struct _actions::impl<Expr, State, proto::empty_env>
+        : proto::transform_impl<Expr, State, proto::empty_env>
     {
             typedef
                 typename fusion::result_of::at_c<
@@ -384,7 +384,7 @@
 
     template <typename Expr, typename State>
     struct _actions::impl<Expr, State, unused>
-        : _actions::impl<Expr, State, int>
+        : _actions::impl<Expr, State, proto::empty_env>
     {};
 
     template <typename Context>
Modified: trunk/boost/phoenix/core/is_nullary.hpp
==============================================================================
--- trunk/boost/phoenix/core/is_nullary.hpp	(original)
+++ trunk/boost/phoenix/core/is_nullary.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -119,7 +119,7 @@
                     mpl::true_
                   , boost::phoenix::is_nullary
                 >
-              , int
+              , proto::empty_env
             >::result_type
         {};
         
Modified: trunk/boost/phoenix/core/meta_grammar.hpp
==============================================================================
--- trunk/boost/phoenix/core/meta_grammar.hpp	(original)
+++ trunk/boost/phoenix/core/meta_grammar.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -52,8 +52,8 @@
         };
 
         template <typename Expr, typename State>
-        struct impl<Expr, State, int>
-            : proto::transform_impl<Expr, State, int>
+        struct impl<Expr, State, proto::empty_env>
+            : proto::transform_impl<Expr, State, proto::empty_env>
         {
             typedef
                 meta_grammar::impl<
Modified: trunk/boost/phoenix/core/value.hpp
==============================================================================
--- trunk/boost/phoenix/core/value.hpp	(original)
+++ trunk/boost/phoenix/core/value.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -57,7 +57,7 @@
         struct result<This(Actor, Context)>
             : boost::remove_const<
                                     typename boost::remove_reference<
-                    typename evaluator::impl<Actor, Context, int>::result_type
+                    typename evaluator::impl<Actor, Context, proto::empty_env>::result_type
                 >::type
 				>
         {};     
Modified: trunk/boost/phoenix/operator/detail/mem_fun_ptr_eval_result_of.hpp
==============================================================================
--- trunk/boost/phoenix/operator/detail/mem_fun_ptr_eval_result_of.hpp	(original)
+++ trunk/boost/phoenix/operator/detail/mem_fun_ptr_eval_result_of.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -16,7 +16,7 @@
                 evaluator::impl<                                                \
                     BOOST_PP_CAT(A, N)                                          \
                   , Context                                                     \
-                  , int                                                         \
+                  , proto::empty_env                                            \
                 >::result_type                                                  \
                 BOOST_PP_CAT(child, N);                                         \
         /**/
Modified: trunk/boost/phoenix/operator/preprocessed/member_10.hpp
==============================================================================
--- trunk/boost/phoenix/operator/preprocessed/member_10.hpp	(original)
+++ trunk/boost/phoenix/operator/preprocessed/member_10.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -37,7 +37,7 @@
         template <typename Context, typename A0 , typename A1>
         struct mem_fun_ptr_eval<Context, A0 , A1>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1;
             typedef
                 typename boost::result_of<
                     child1(
@@ -56,7 +56,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2;
             typedef
                 typename boost::result_of<
                     child1(
@@ -75,7 +75,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3;
             typedef
                 typename boost::result_of<
                     child1(
@@ -94,7 +94,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4;
             typedef
                 typename boost::result_of<
                     child1(
@@ -113,7 +113,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5;
             typedef
                 typename boost::result_of<
                     child1(
@@ -132,7 +132,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6;
             typedef
                 typename boost::result_of<
                     child1(
@@ -151,7 +151,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7;
             typedef
                 typename boost::result_of<
                     child1(
@@ -170,7 +170,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8;
             typedef
                 typename boost::result_of<
                     child1(
@@ -189,7 +189,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9;
             typedef
                 typename boost::result_of<
                     child1(
Modified: trunk/boost/phoenix/operator/preprocessed/member_20.hpp
==============================================================================
--- trunk/boost/phoenix/operator/preprocessed/member_20.hpp	(original)
+++ trunk/boost/phoenix/operator/preprocessed/member_20.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -37,7 +37,7 @@
         template <typename Context, typename A0 , typename A1>
         struct mem_fun_ptr_eval<Context, A0 , A1>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1;
             typedef
                 typename boost::result_of<
                     child1(
@@ -56,7 +56,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2;
             typedef
                 typename boost::result_of<
                     child1(
@@ -75,7 +75,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3;
             typedef
                 typename boost::result_of<
                     child1(
@@ -94,7 +94,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4;
             typedef
                 typename boost::result_of<
                     child1(
@@ -113,7 +113,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5;
             typedef
                 typename boost::result_of<
                     child1(
@@ -132,7 +132,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6;
             typedef
                 typename boost::result_of<
                     child1(
@@ -151,7 +151,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7;
             typedef
                 typename boost::result_of<
                     child1(
@@ -170,7 +170,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8;
             typedef
                 typename boost::result_of<
                     child1(
@@ -189,7 +189,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9;
             typedef
                 typename boost::result_of<
                     child1(
@@ -208,7 +208,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10;
             typedef
                 typename boost::result_of<
                     child1(
@@ -227,7 +227,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11;
             typedef
                 typename boost::result_of<
                     child1(
@@ -246,7 +246,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12;
             typedef
                 typename boost::result_of<
                     child1(
@@ -265,7 +265,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13;
             typedef
                 typename boost::result_of<
                     child1(
@@ -284,7 +284,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14;
             typedef
                 typename boost::result_of<
                     child1(
@@ -303,7 +303,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15;
             typedef
                 typename boost::result_of<
                     child1(
@@ -322,7 +322,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16;
             typedef
                 typename boost::result_of<
                     child1(
@@ -341,7 +341,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17;
             typedef
                 typename boost::result_of<
                     child1(
@@ -360,7 +360,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18;
             typedef
                 typename boost::result_of<
                     child1(
@@ -379,7 +379,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19;
             typedef
                 typename boost::result_of<
                     child1(
Modified: trunk/boost/phoenix/operator/preprocessed/member_30.hpp
==============================================================================
--- trunk/boost/phoenix/operator/preprocessed/member_30.hpp	(original)
+++ trunk/boost/phoenix/operator/preprocessed/member_30.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -37,7 +37,7 @@
         template <typename Context, typename A0 , typename A1>
         struct mem_fun_ptr_eval<Context, A0 , A1>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1;
             typedef
                 typename boost::result_of<
                     child1(
@@ -56,7 +56,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2;
             typedef
                 typename boost::result_of<
                     child1(
@@ -75,7 +75,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3;
             typedef
                 typename boost::result_of<
                     child1(
@@ -94,7 +94,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4;
             typedef
                 typename boost::result_of<
                     child1(
@@ -113,7 +113,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5;
             typedef
                 typename boost::result_of<
                     child1(
@@ -132,7 +132,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6;
             typedef
                 typename boost::result_of<
                     child1(
@@ -151,7 +151,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7;
             typedef
                 typename boost::result_of<
                     child1(
@@ -170,7 +170,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8;
             typedef
                 typename boost::result_of<
                     child1(
@@ -189,7 +189,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9;
             typedef
                 typename boost::result_of<
                     child1(
@@ -208,7 +208,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10;
             typedef
                 typename boost::result_of<
                     child1(
@@ -227,7 +227,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11;
             typedef
                 typename boost::result_of<
                     child1(
@@ -246,7 +246,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12;
             typedef
                 typename boost::result_of<
                     child1(
@@ -265,7 +265,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13;
             typedef
                 typename boost::result_of<
                     child1(
@@ -284,7 +284,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14;
             typedef
                 typename boost::result_of<
                     child1(
@@ -303,7 +303,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15;
             typedef
                 typename boost::result_of<
                     child1(
@@ -322,7 +322,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16;
             typedef
                 typename boost::result_of<
                     child1(
@@ -341,7 +341,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17;
             typedef
                 typename boost::result_of<
                     child1(
@@ -360,7 +360,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18;
             typedef
                 typename boost::result_of<
                     child1(
@@ -379,7 +379,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19;
             typedef
                 typename boost::result_of<
                     child1(
@@ -398,7 +398,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20;
             typedef
                 typename boost::result_of<
                     child1(
@@ -417,7 +417,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21;
             typedef
                 typename boost::result_of<
                     child1(
@@ -436,7 +436,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22;
             typedef
                 typename boost::result_of<
                     child1(
@@ -455,7 +455,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23;
             typedef
                 typename boost::result_of<
                     child1(
@@ -474,7 +474,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24;
             typedef
                 typename boost::result_of<
                     child1(
@@ -493,7 +493,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25;
             typedef
                 typename boost::result_of<
                     child1(
@@ -512,7 +512,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26;
             typedef
                 typename boost::result_of<
                     child1(
@@ -531,7 +531,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27;
             typedef
                 typename boost::result_of<
                     child1(
@@ -550,7 +550,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28;
             typedef
                 typename boost::result_of<
                     child1(
@@ -569,7 +569,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29;
             typedef
                 typename boost::result_of<
                     child1(
Modified: trunk/boost/phoenix/operator/preprocessed/member_40.hpp
==============================================================================
--- trunk/boost/phoenix/operator/preprocessed/member_40.hpp	(original)
+++ trunk/boost/phoenix/operator/preprocessed/member_40.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -37,7 +37,7 @@
         template <typename Context, typename A0 , typename A1>
         struct mem_fun_ptr_eval<Context, A0 , A1>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1;
             typedef
                 typename boost::result_of<
                     child1(
@@ -56,7 +56,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2;
             typedef
                 typename boost::result_of<
                     child1(
@@ -75,7 +75,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3;
             typedef
                 typename boost::result_of<
                     child1(
@@ -94,7 +94,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4;
             typedef
                 typename boost::result_of<
                     child1(
@@ -113,7 +113,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5;
             typedef
                 typename boost::result_of<
                     child1(
@@ -132,7 +132,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6;
             typedef
                 typename boost::result_of<
                     child1(
@@ -151,7 +151,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7;
             typedef
                 typename boost::result_of<
                     child1(
@@ -170,7 +170,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8;
             typedef
                 typename boost::result_of<
                     child1(
@@ -189,7 +189,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9;
             typedef
                 typename boost::result_of<
                     child1(
@@ -208,7 +208,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10;
             typedef
                 typename boost::result_of<
                     child1(
@@ -227,7 +227,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11;
             typedef
                 typename boost::result_of<
                     child1(
@@ -246,7 +246,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12;
             typedef
                 typename boost::result_of<
                     child1(
@@ -265,7 +265,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13;
             typedef
                 typename boost::result_of<
                     child1(
@@ -284,7 +284,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14;
             typedef
                 typename boost::result_of<
                     child1(
@@ -303,7 +303,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15;
             typedef
                 typename boost::result_of<
                     child1(
@@ -322,7 +322,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16;
             typedef
                 typename boost::result_of<
                     child1(
@@ -341,7 +341,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17;
             typedef
                 typename boost::result_of<
                     child1(
@@ -360,7 +360,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18;
             typedef
                 typename boost::result_of<
                     child1(
@@ -379,7 +379,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19;
             typedef
                 typename boost::result_of<
                     child1(
@@ -398,7 +398,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20;
             typedef
                 typename boost::result_of<
                     child1(
@@ -417,7 +417,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21;
             typedef
                 typename boost::result_of<
                     child1(
@@ -436,7 +436,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22;
             typedef
                 typename boost::result_of<
                     child1(
@@ -455,7 +455,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23;
             typedef
                 typename boost::result_of<
                     child1(
@@ -474,7 +474,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24;
             typedef
                 typename boost::result_of<
                     child1(
@@ -493,7 +493,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25;
             typedef
                 typename boost::result_of<
                     child1(
@@ -512,7 +512,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26;
             typedef
                 typename boost::result_of<
                     child1(
@@ -531,7 +531,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27;
             typedef
                 typename boost::result_of<
                     child1(
@@ -550,7 +550,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28;
             typedef
                 typename boost::result_of<
                     child1(
@@ -569,7 +569,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29;
             typedef
                 typename boost::result_of<
                     child1(
@@ -588,7 +588,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30;
             typedef
                 typename boost::result_of<
                     child1(
@@ -607,7 +607,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31;
             typedef
                 typename boost::result_of<
                     child1(
@@ -626,7 +626,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32;
             typedef
                 typename boost::result_of<
                     child1(
@@ -645,7 +645,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33;
             typedef
                 typename boost::result_of<
                     child1(
@@ -664,7 +664,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34;
             typedef
                 typename boost::result_of<
                     child1(
@@ -683,7 +683,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35;
             typedef
                 typename boost::result_of<
                     child1(
@@ -702,7 +702,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36;
             typedef
                 typename boost::result_of<
                     child1(
@@ -721,7 +721,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37;
             typedef
                 typename boost::result_of<
                     child1(
@@ -740,7 +740,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38;
             typedef
                 typename boost::result_of<
                     child1(
@@ -759,7 +759,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39;
             typedef
                 typename boost::result_of<
                     child1(
Modified: trunk/boost/phoenix/operator/preprocessed/member_50.hpp
==============================================================================
--- trunk/boost/phoenix/operator/preprocessed/member_50.hpp	(original)
+++ trunk/boost/phoenix/operator/preprocessed/member_50.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -37,7 +37,7 @@
         template <typename Context, typename A0 , typename A1>
         struct mem_fun_ptr_eval<Context, A0 , A1>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1;
             typedef
                 typename boost::result_of<
                     child1(
@@ -56,7 +56,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2;
             typedef
                 typename boost::result_of<
                     child1(
@@ -75,7 +75,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3;
             typedef
                 typename boost::result_of<
                     child1(
@@ -94,7 +94,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4;
             typedef
                 typename boost::result_of<
                     child1(
@@ -113,7 +113,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5;
             typedef
                 typename boost::result_of<
                     child1(
@@ -132,7 +132,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6;
             typedef
                 typename boost::result_of<
                     child1(
@@ -151,7 +151,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7;
             typedef
                 typename boost::result_of<
                     child1(
@@ -170,7 +170,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8;
             typedef
                 typename boost::result_of<
                     child1(
@@ -189,7 +189,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9;
             typedef
                 typename boost::result_of<
                     child1(
@@ -208,7 +208,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10;
             typedef
                 typename boost::result_of<
                     child1(
@@ -227,7 +227,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11;
             typedef
                 typename boost::result_of<
                     child1(
@@ -246,7 +246,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12;
             typedef
                 typename boost::result_of<
                     child1(
@@ -265,7 +265,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13;
             typedef
                 typename boost::result_of<
                     child1(
@@ -284,7 +284,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14;
             typedef
                 typename boost::result_of<
                     child1(
@@ -303,7 +303,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15;
             typedef
                 typename boost::result_of<
                     child1(
@@ -322,7 +322,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16;
             typedef
                 typename boost::result_of<
                     child1(
@@ -341,7 +341,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17;
             typedef
                 typename boost::result_of<
                     child1(
@@ -360,7 +360,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18;
             typedef
                 typename boost::result_of<
                     child1(
@@ -379,7 +379,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19;
             typedef
                 typename boost::result_of<
                     child1(
@@ -398,7 +398,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20;
             typedef
                 typename boost::result_of<
                     child1(
@@ -417,7 +417,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21;
             typedef
                 typename boost::result_of<
                     child1(
@@ -436,7 +436,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22;
             typedef
                 typename boost::result_of<
                     child1(
@@ -455,7 +455,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23;
             typedef
                 typename boost::result_of<
                     child1(
@@ -474,7 +474,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24;
             typedef
                 typename boost::result_of<
                     child1(
@@ -493,7 +493,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25;
             typedef
                 typename boost::result_of<
                     child1(
@@ -512,7 +512,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26;
             typedef
                 typename boost::result_of<
                     child1(
@@ -531,7 +531,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27;
             typedef
                 typename boost::result_of<
                     child1(
@@ -550,7 +550,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28;
             typedef
                 typename boost::result_of<
                     child1(
@@ -569,7 +569,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29;
             typedef
                 typename boost::result_of<
                     child1(
@@ -588,7 +588,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30;
             typedef
                 typename boost::result_of<
                     child1(
@@ -607,7 +607,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31;
             typedef
                 typename boost::result_of<
                     child1(
@@ -626,7 +626,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32;
             typedef
                 typename boost::result_of<
                     child1(
@@ -645,7 +645,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33;
             typedef
                 typename boost::result_of<
                     child1(
@@ -664,7 +664,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34;
             typedef
                 typename boost::result_of<
                     child1(
@@ -683,7 +683,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35;
             typedef
                 typename boost::result_of<
                     child1(
@@ -702,7 +702,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36;
             typedef
                 typename boost::result_of<
                     child1(
@@ -721,7 +721,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37;
             typedef
                 typename boost::result_of<
                     child1(
@@ -740,7 +740,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38;
             typedef
                 typename boost::result_of<
                     child1(
@@ -759,7 +759,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39;
             typedef
                 typename boost::result_of<
                     child1(
@@ -778,7 +778,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39 , typename A40>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39; typedef typename evaluator::impl< A40 , Context , int >::result_type child40;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39; typedef typename evaluator::impl< A40 , Context , proto::empty_env >::result_type child40;
             typedef
                 typename boost::result_of<
                     child1(
@@ -797,7 +797,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39 , typename A40 , typename A41>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39; typedef typename evaluator::impl< A40 , Context , int >::result_type child40; typedef typename evaluator::impl< A41 , Context , int >::result_type child41;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39; typedef typename evaluator::impl< A40 , Context , proto::empty_env >::result_type child40; typedef typename evaluator::impl< A41 , Context , proto::empty_env >::result_type child41;
             typedef
                 typename boost::result_of<
                     child1(
@@ -816,7 +816,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39 , typename A40 , typename A41 , typename A42>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39; typedef typename evaluator::impl< A40 , Context , int >::result_type child40; typedef typename evaluator::impl< A41 , Context , int >::result_type child41; typedef typename evaluator::impl< A42 , Context , int >::result_type child42;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39; typedef typename evaluator::impl< A40 , Context , proto::empty_env >::result_type child40; typedef typename evaluator::impl< A41 , Context , proto::empty_env >::result_type child41; typedef typename evaluator::impl< A42 , Context , proto::empty_env >::result_type child42;
             typedef
                 typename boost::result_of<
                     child1(
@@ -835,7 +835,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39 , typename A40 , typename A41 , typename A42 , typename A43>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39; typedef typename evaluator::impl< A40 , Context , int >::result_type child40; typedef typename evaluator::impl< A41 , Context , int >::result_type child41; typedef typename evaluator::impl< A42 , Context , int >::result_type child42; typedef typename evaluator::impl< A43 , Context , int >::result_type child43;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39; typedef typename evaluator::impl< A40 , Context , proto::empty_env >::result_type child40; typedef typename evaluator::impl< A41 , Context , proto::empty_env >::result_type child41; typedef typename evaluator::impl< A42 , Context , proto::empty_env >::result_type child42; typedef typename evaluator::impl< A43 , Context , proto::empty_env >::result_type child43;
             typedef
                 typename boost::result_of<
                     child1(
@@ -854,7 +854,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39 , typename A40 , typename A41 , typename A42 , typename A43 , typename A44>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39; typedef typename evaluator::impl< A40 , Context , int >::result_type child40; typedef typename evaluator::impl< A41 , Context , int >::result_type child41; typedef typename evaluator::impl< A42 , Context , int >::result_type child42; typedef typename evaluator::impl< A43 , Context , int >::result_type child43; typedef typename evaluator::impl< A44 , Context , int >::result_type child44;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39; typedef typename evaluator::impl< A40 , Context , proto::empty_env >::result_type child40; typedef typename evaluator::impl< A41 , Context , proto::empty_env >::result_type child41; typedef typename evaluator::impl< A42 , Context , proto::empty_env >::result_type child42; typedef typename evaluator::impl< A43 , Context , proto::empty_env >::result_type child43; typedef typename evaluator::impl< A44 , Context , proto::empty_env >::result_type child44;
             typedef
                 typename boost::result_of<
                     child1(
@@ -873,7 +873,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39 , typename A40 , typename A41 , typename A42 , typename A43 , typename A44 , typename A45>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44 , A45>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39; typedef typename evaluator::impl< A40 , Context , int >::result_type child40; typedef typename evaluator::impl< A41 , Context , int >::result_type child41; typedef typename evaluator::impl< A42 , Context , int >::result_type child42; typedef typename evaluator::impl< A43 , Context , int >::result_type child43; typedef typename evaluator::impl< A44 , Context , int >::result_type child44; typedef typename evaluator::impl< A45 , Context , int >::result_type child45;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39; typedef typename evaluator::impl< A40 , Context , proto::empty_env >::result_type child40; typedef typename evaluator::impl< A41 , Context , proto::empty_env >::result_type child41; typedef typename evaluator::impl< A42 , Context , proto::empty_env >::result_type child42; typedef typename evaluator::impl< A43 , Context , proto::empty_env >::result_type child43; typedef typename evaluator::impl< A44 , Context , proto::empty_env >::result_type child44; type
def typename evaluator::impl< A45 , Context , proto::empty_env >::result_type child45;
             typedef
                 typename boost::result_of<
                     child1(
@@ -892,7 +892,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39 , typename A40 , typename A41 , typename A42 , typename A43 , typename A44 , typename A45 , typename A46>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44 , A45 , A46>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39; typedef typename evaluator::impl< A40 , Context , int >::result_type child40; typedef typename evaluator::impl< A41 , Context , int >::result_type child41; typedef typename evaluator::impl< A42 , Context , int >::result_type child42; typedef typename evaluator::impl< A43 , Context , int >::result_type child43; typedef typename evaluator::impl< A44 , Context , int >::result_type child44; typedef typename evaluator::impl< A45 , Context , int >::result_type child45; typedef typename evaluator::impl< A46 , Context , int >::result_type child46;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39; typedef typename evaluator::impl< A40 , Context , proto::empty_env >::result_type child40; typedef typename evaluator::impl< A41 , Context , proto::empty_env >::result_type child41; typedef typename evaluator::impl< A42 , Context , proto::empty_env >::result_type child42; typedef typename evaluator::impl< A43 , Context , proto::empty_env >::result_type child43; typedef typename evaluator::impl< A44 , Context , proto::empty_env >::result_type child44; type
def typename evaluator::impl< A45 , Context , proto::empty_env >::result_type child45; typedef typename evaluator::impl< A46 , Context , proto::empty_env >::result_type child46;
             typedef
                 typename boost::result_of<
                     child1(
@@ -911,7 +911,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39 , typename A40 , typename A41 , typename A42 , typename A43 , typename A44 , typename A45 , typename A46 , typename A47>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44 , A45 , A46 , A47>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39; typedef typename evaluator::impl< A40 , Context , int >::result_type child40; typedef typename evaluator::impl< A41 , Context , int >::result_type child41; typedef typename evaluator::impl< A42 , Context , int >::result_type child42; typedef typename evaluator::impl< A43 , Context , int >::result_type child43; typedef typename evaluator::impl< A44 , Context , int >::result_type child44; typedef typename evaluator::impl< A45 , Context , int >::result_type child45; typedef typename evaluator::impl< A46 , Context , int >::result_type child46; typedef typename evaluator::impl< A47 , Context , int >::result_type child47;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39; typedef typename evaluator::impl< A40 , Context , proto::empty_env >::result_type child40; typedef typename evaluator::impl< A41 , Context , proto::empty_env >::result_type child41; typedef typename evaluator::impl< A42 , Context , proto::empty_env >::result_type child42; typedef typename evaluator::impl< A43 , Context , proto::empty_env >::result_type child43; typedef typename evaluator::impl< A44 , Context , proto::empty_env >::result_type child44; type
def typename evaluator::impl< A45 , Context , proto::empty_env >::result_type child45; typedef typename evaluator::impl< A46 , Context , proto::empty_env >::result_type child46; typedef typename evaluator::impl< A47 , Context , proto::empty_env >::result_type child47;
             typedef
                 typename boost::result_of<
                     child1(
@@ -930,7 +930,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39 , typename A40 , typename A41 , typename A42 , typename A43 , typename A44 , typename A45 , typename A46 , typename A47 , typename A48>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44 , A45 , A46 , A47 , A48>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39; typedef typename evaluator::impl< A40 , Context , int >::result_type child40; typedef typename evaluator::impl< A41 , Context , int >::result_type child41; typedef typename evaluator::impl< A42 , Context , int >::result_type child42; typedef typename evaluator::impl< A43 , Context , int >::result_type child43; typedef typename evaluator::impl< A44 , Context , int >::result_type child44; typedef typename evaluator::impl< A45 , Context , int >::result_type child45; typedef typename evaluator::impl< A46 , Context , int >::result_type child46; typedef typename evaluator::impl< A47 , Context , int >::result_type child47; typedef typename evaluator::impl< A48 , Context , int >::result_type child48;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39; typedef typename evaluator::impl< A40 , Context , proto::empty_env >::result_type child40; typedef typename evaluator::impl< A41 , Context , proto::empty_env >::result_type child41; typedef typename evaluator::impl< A42 , Context , proto::empty_env >::result_type child42; typedef typename evaluator::impl< A43 , Context , proto::empty_env >::result_type child43; typedef typename evaluator::impl< A44 , Context , proto::empty_env >::result_type child44; type
def typename evaluator::impl< A45 , Context , proto::empty_env >::result_type child45; typedef typename evaluator::impl< A46 , Context , proto::empty_env >::result_type child46; typedef typename evaluator::impl< A47 , Context , proto::empty_env >::result_type child47; typedef typename evaluator::impl< A48 , Context , proto::empty_env >::result_type child48;
             typedef
                 typename boost::result_of<
                     child1(
@@ -949,7 +949,7 @@
         template <typename Context, typename A0 , typename A1 , typename A2 , typename A3 , typename A4 , typename A5 , typename A6 , typename A7 , typename A8 , typename A9 , typename A10 , typename A11 , typename A12 , typename A13 , typename A14 , typename A15 , typename A16 , typename A17 , typename A18 , typename A19 , typename A20 , typename A21 , typename A22 , typename A23 , typename A24 , typename A25 , typename A26 , typename A27 , typename A28 , typename A29 , typename A30 , typename A31 , typename A32 , typename A33 , typename A34 , typename A35 , typename A36 , typename A37 , typename A38 , typename A39 , typename A40 , typename A41 , typename A42 , typename A43 , typename A44 , typename A45 , typename A46 , typename A47 , typename A48 , typename A49>
         struct mem_fun_ptr_eval<Context, A0 , A1 , A2 , A3 , A4 , A5 , A6 , A7 , A8 , A9 , A10 , A11 , A12 , A13 , A14 , A15 , A16 , A17 , A18 , A19 , A20 , A21 , A22 , A23 , A24 , A25 , A26 , A27 , A28 , A29 , A30 , A31 , A32 , A33 , A34 , A35 , A36 , A37 , A38 , A39 , A40 , A41 , A42 , A43 , A44 , A45 , A46 , A47 , A48 , A49>
         {
-            typedef typename evaluator::impl< A0 , Context , int >::result_type child0; typedef typename evaluator::impl< A1 , Context , int >::result_type child1; typedef typename evaluator::impl< A2 , Context , int >::result_type child2; typedef typename evaluator::impl< A3 , Context , int >::result_type child3; typedef typename evaluator::impl< A4 , Context , int >::result_type child4; typedef typename evaluator::impl< A5 , Context , int >::result_type child5; typedef typename evaluator::impl< A6 , Context , int >::result_type child6; typedef typename evaluator::impl< A7 , Context , int >::result_type child7; typedef typename evaluator::impl< A8 , Context , int >::result_type child8; typedef typename evaluator::impl< A9 , Context , int >::result_type child9; typedef typename evaluator::impl< A10 , Context , int >::result_type child10; typedef typename evaluator::impl< A11 , Context , int >::result_type child11; typedef typename evaluator::impl< A12 , Context , int >::result_type child12; typedef typename
 evaluator::impl< A13 , Context , int >::result_type child13; typedef typename evaluator::impl< A14 , Context , int >::result_type child14; typedef typename evaluator::impl< A15 , Context , int >::result_type child15; typedef typename evaluator::impl< A16 , Context , int >::result_type child16; typedef typename evaluator::impl< A17 , Context , int >::result_type child17; typedef typename evaluator::impl< A18 , Context , int >::result_type child18; typedef typename evaluator::impl< A19 , Context , int >::result_type child19; typedef typename evaluator::impl< A20 , Context , int >::result_type child20; typedef typename evaluator::impl< A21 , Context , int >::result_type child21; typedef typename evaluator::impl< A22 , Context , int >::result_type child22; typedef typename evaluator::impl< A23 , Context , int >::result_type child23; typedef typename evaluator::impl< A24 , Context , int >::result_type child24; typedef typename evaluator::impl< A25 , Context , int >::result_type child25; typedef typename evaluato
r::impl< A26 , Context , int >::result_type child26; typedef typename evaluator::impl< A27 , Context , int >::result_type child27; typedef typename evaluator::impl< A28 , Context , int >::result_type child28; typedef typename evaluator::impl< A29 , Context , int >::result_type child29; typedef typename evaluator::impl< A30 , Context , int >::result_type child30; typedef typename evaluator::impl< A31 , Context , int >::result_type child31; typedef typename evaluator::impl< A32 , Context , int >::result_type child32; typedef typename evaluator::impl< A33 , Context , int >::result_type child33; typedef typename evaluator::impl< A34 , Context , int >::result_type child34; typedef typename evaluator::impl< A35 , Context , int >::result_type child35; typedef typename evaluator::impl< A36 , Context , int >::result_type child36; typedef typename evaluator::impl< A37 , Context , int >::result_type child37; typedef typename evaluator::impl< A38 , Context , int >::result_type child38; typedef typename evaluator::impl< 
A39 , Context , int >::result_type child39; typedef typename evaluator::impl< A40 , Context , int >::result_type child40; typedef typename evaluator::impl< A41 , Context , int >::result_type child41; typedef typename evaluator::impl< A42 , Context , int >::result_type child42; typedef typename evaluator::impl< A43 , Context , int >::result_type child43; typedef typename evaluator::impl< A44 , Context , int >::result_type child44; typedef typename evaluator::impl< A45 , Context , int >::result_type child45; typedef typename evaluator::impl< A46 , Context , int >::result_type child46; typedef typename evaluator::impl< A47 , Context , int >::result_type child47; typedef typename evaluator::impl< A48 , Context , int >::result_type child48; typedef typename evaluator::impl< A49 , Context , int >::result_type child49;
+            typedef typename evaluator::impl< A0 , Context , proto::empty_env >::result_type child0; typedef typename evaluator::impl< A1 , Context , proto::empty_env >::result_type child1; typedef typename evaluator::impl< A2 , Context , proto::empty_env >::result_type child2; typedef typename evaluator::impl< A3 , Context , proto::empty_env >::result_type child3; typedef typename evaluator::impl< A4 , Context , proto::empty_env >::result_type child4; typedef typename evaluator::impl< A5 , Context , proto::empty_env >::result_type child5; typedef typename evaluator::impl< A6 , Context , proto::empty_env >::result_type child6; typedef typename evaluator::impl< A7 , Context , proto::empty_env >::result_type child7; typedef typename evaluator::impl< A8 , Context , proto::empty_env >::result_type child8; typedef typename evaluator::impl< A9 , Context , proto::empty_env >::result_type child9; typedef typename evaluator::impl< A10 , Context , proto::empty_env >::result_type child10; typedef typename evaluator::i
mpl< A11 , Context , proto::empty_env >::result_type child11; typedef typename evaluator::impl< A12 , Context , proto::empty_env >::result_type child12; typedef typename evaluator::impl< A13 , Context , proto::empty_env >::result_type child13; typedef typename evaluator::impl< A14 , Context , proto::empty_env >::result_type child14; typedef typename evaluator::impl< A15 , Context , proto::empty_env >::result_type child15; typedef typename evaluator::impl< A16 , Context , proto::empty_env >::result_type child16; typedef typename evaluator::impl< A17 , Context , proto::empty_env >::result_type child17; typedef typename evaluator::impl< A18 , Context , proto::empty_env >::result_type child18; typedef typename evaluator::impl< A19 , Context , proto::empty_env >::result_type child19; typedef typename evaluator::impl< A20 , Context , proto::empty_env >::result_type child20; typedef typename evaluator::impl< A21 , Context , proto::empty_env >::result_type child21; typedef typename evaluator::impl< A22 , Context , p
roto::empty_env >::result_type child22; typedef typename evaluator::impl< A23 , Context , proto::empty_env >::result_type child23; typedef typename evaluator::impl< A24 , Context , proto::empty_env >::result_type child24; typedef typename evaluator::impl< A25 , Context , proto::empty_env >::result_type child25; typedef typename evaluator::impl< A26 , Context , proto::empty_env >::result_type child26; typedef typename evaluator::impl< A27 , Context , proto::empty_env >::result_type child27; typedef typename evaluator::impl< A28 , Context , proto::empty_env >::result_type child28; typedef typename evaluator::impl< A29 , Context , proto::empty_env >::result_type child29; typedef typename evaluator::impl< A30 , Context , proto::empty_env >::result_type child30; typedef typename evaluator::impl< A31 , Context , proto::empty_env >::result_type child31; typedef typename evaluator::impl< A32 , Context , proto::empty_env >::result_type child32; typedef typename evaluator::impl< A33 , Context , proto::empty_env >::res
ult_type child33; typedef typename evaluator::impl< A34 , Context , proto::empty_env >::result_type child34; typedef typename evaluator::impl< A35 , Context , proto::empty_env >::result_type child35; typedef typename evaluator::impl< A36 , Context , proto::empty_env >::result_type child36; typedef typename evaluator::impl< A37 , Context , proto::empty_env >::result_type child37; typedef typename evaluator::impl< A38 , Context , proto::empty_env >::result_type child38; typedef typename evaluator::impl< A39 , Context , proto::empty_env >::result_type child39; typedef typename evaluator::impl< A40 , Context , proto::empty_env >::result_type child40; typedef typename evaluator::impl< A41 , Context , proto::empty_env >::result_type child41; typedef typename evaluator::impl< A42 , Context , proto::empty_env >::result_type child42; typedef typename evaluator::impl< A43 , Context , proto::empty_env >::result_type child43; typedef typename evaluator::impl< A44 , Context , proto::empty_env >::result_type child44; type
def typename evaluator::impl< A45 , Context , proto::empty_env >::result_type child45; typedef typename evaluator::impl< A46 , Context , proto::empty_env >::result_type child46; typedef typename evaluator::impl< A47 , Context , proto::empty_env >::result_type child47; typedef typename evaluator::impl< A48 , Context , proto::empty_env >::result_type child48; typedef typename evaluator::impl< A49 , Context , proto::empty_env >::result_type child49;
             typedef
                 typename boost::result_of<
                     child1(
Modified: trunk/boost/phoenix/scope/lambda.hpp
==============================================================================
--- trunk/boost/phoenix/scope/lambda.hpp	(original)
+++ trunk/boost/phoenix/scope/lambda.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -181,7 +181,7 @@
                     )
                 >
               , proto::make<
-                    int()
+                    proto::empty_env()
                 >
             )
         >
@@ -214,7 +214,7 @@
                                 evaluator(
                                     proto::_
                                   , _context
-                                  , proto::make<int()>
+                                  , proto::make<proto::empty_env()>
                                 )
                             >
                         >()
Modified: trunk/boost/phoenix/scope/let.hpp
==============================================================================
--- trunk/boost/phoenix/scope/let.hpp	(original)
+++ trunk/boost/phoenix/scope/let.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -174,7 +174,7 @@
                                 evaluator(
                                     proto::_
                                   , _context
-                                  , proto::make<int()>
+                                  , proto::make<proto::empty_env()>
                                 )
                             >
                         >()
@@ -193,7 +193,7 @@
                         )
                     >
                   , proto::make<
-                        int()
+                        proto::empty_env()
                     >
                 )
             >()
Modified: trunk/boost/phoenix/scope/preprocessed/lambda_10.hpp
==============================================================================
--- trunk/boost/phoenix/scope/preprocessed/lambda_10.hpp	(original)
+++ trunk/boost/phoenix/scope/preprocessed/lambda_10.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -131,7 +131,7 @@
                     )
                 >
               , proto::make<
-                    int()
+                    proto::empty_env()
                 >
             )
         >
@@ -163,7 +163,7 @@
                                 evaluator(
                                     proto::_
                                   , _context
-                                  , proto::make<int()>
+                                  , proto::make<proto::empty_env()>
                                 )
                             >
                         >()
Modified: trunk/boost/phoenix/scope/preprocessed/lambda_20.hpp
==============================================================================
--- trunk/boost/phoenix/scope/preprocessed/lambda_20.hpp	(original)
+++ trunk/boost/phoenix/scope/preprocessed/lambda_20.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -131,7 +131,7 @@
                     )
                 >
               , proto::make<
-                    int()
+                    proto::empty_env()
                 >
             )
         >
@@ -163,7 +163,7 @@
                                 evaluator(
                                     proto::_
                                   , _context
-                                  , proto::make<int()>
+                                  , proto::make<proto::empty_env()>
                                 )
                             >
                         >()
Modified: trunk/boost/phoenix/scope/preprocessed/lambda_30.hpp
==============================================================================
--- trunk/boost/phoenix/scope/preprocessed/lambda_30.hpp	(original)
+++ trunk/boost/phoenix/scope/preprocessed/lambda_30.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -131,7 +131,7 @@
                     )
                 >
               , proto::make<
-                    int()
+                    proto::empty_env()
                 >
             )
         >
@@ -163,7 +163,7 @@
                                 evaluator(
                                     proto::_
                                   , _context
-                                  , proto::make<int()>
+                                  , proto::make<proto::empty_env()>
                                 )
                             >
                         >()
Modified: trunk/boost/phoenix/scope/preprocessed/lambda_40.hpp
==============================================================================
--- trunk/boost/phoenix/scope/preprocessed/lambda_40.hpp	(original)
+++ trunk/boost/phoenix/scope/preprocessed/lambda_40.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -131,7 +131,7 @@
                     )
                 >
               , proto::make<
-                    int()
+                    proto::empty_env()
                 >
             )
         >
@@ -163,7 +163,7 @@
                                 evaluator(
                                     proto::_
                                   , _context
-                                  , proto::make<int()>
+                                  , proto::make<proto::empty_env()>
                                 )
                             >
                         >()
Modified: trunk/boost/phoenix/scope/preprocessed/lambda_50.hpp
==============================================================================
--- trunk/boost/phoenix/scope/preprocessed/lambda_50.hpp	(original)
+++ trunk/boost/phoenix/scope/preprocessed/lambda_50.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -131,7 +131,7 @@
                     )
                 >
               , proto::make<
-                    int()
+                    proto::empty_env()
                 >
             )
         >
@@ -163,7 +163,7 @@
                                 evaluator(
                                     proto::_
                                   , _context
-                                  , proto::make<int()>
+                                  , proto::make<proto::empty_env()>
                                 )
                             >
                         >()
Modified: trunk/boost/phoenix/statement/switch.hpp
==============================================================================
--- trunk/boost/phoenix/statement/switch.hpp	(original)
+++ trunk/boost/phoenix/statement/switch.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -136,8 +136,8 @@
                     ctx
                   , cond
                   , cases
-                  , typename detail::switch_size::impl<Cases, int, int>::result_type()
-                  , typename detail::switch_grammar::impl<Cases, int, int>::result_type()
+                  , typename detail::switch_size::impl<Cases, int, proto::empty_env>::result_type()
+                  , typename detail::switch_grammar::impl<Cases, int, proto::empty_env>::result_type()
                 );
         }
 
Modified: trunk/boost/phoenix/statement/try_catch.hpp
==============================================================================
--- trunk/boost/phoenix/statement/try_catch.hpp	(original)
+++ trunk/boost/phoenix/statement/try_catch.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -120,7 +120,7 @@
                         evaluator(
                             proto::_child_c<0>
                           , proto::_data
-                          , proto::make<int()>
+                          , proto::make<proto::empty_env()>
                         )
                     >
                 >
@@ -130,7 +130,7 @@
                         evaluator(
                             proto::_child_c<1>
                           , proto::_data
-                          , proto::make<int()>
+                          , proto::make<proto::empty_env()>
                         )
                     >
                 >
@@ -142,7 +142,7 @@
                                 evaluator(
                                     proto::_child_c<0>
                                   , proto::_data
-                                  , proto::make<int()>
+                                  , proto::make<proto::empty_env()>
                                 )
                             >
                           , proto::fold<
@@ -156,7 +156,7 @@
                                       , proto::call<
                                             try_catch_is_nullary(
                                                 proto::_
-                                              , proto::make<int()>
+                                              , proto::make<proto::empty_env()>
                                               , proto::_data
                                             )
                                         >
@@ -256,7 +256,7 @@
         : proto::call<
             detail::try_catch_is_nullary(
                 proto::_
-              , proto::make<int()>
+              , proto::make<proto::empty_env()>
               , _context
             )
         >
Modified: trunk/boost/proto/args.hpp
==============================================================================
--- trunk/boost/proto/args.hpp	(original)
+++ trunk/boost/proto/args.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -16,52 +16,19 @@
 #include <boost/preprocessor/repetition/enum_params.hpp>
 #include <boost/preprocessor/repetition/repeat.hpp>
 #include <boost/preprocessor/repetition/repeat_from_to.hpp>
-#include <boost/type_traits/is_function.hpp>
-#include <boost/type_traits/is_abstract.hpp>
 #include <boost/mpl/if.hpp>
-#include <boost/mpl/or.hpp>
 #include <boost/mpl/void.hpp>
 #include <boost/proto/proto_fwd.hpp>
+#include <boost/proto/detail/is_noncopyable.hpp>
+
+#include <boost/mpl/or.hpp>
+#include <boost/type_traits/is_function.hpp>
+#include <boost/type_traits/is_abstract.hpp>
 
 namespace boost { namespace proto
 {
     namespace detail
     {
-        // All classes derived from std::ios_base have these public nested types,
-        // and are non-copyable. This is an imperfect test, but it's the best we
-        // we can do.
-        template<typename T>
-        yes_type check_is_iostream(
-            typename T::failure *
-          , typename T::Init *
-          , typename T::fmtflags *
-          , typename T::iostate *
-          , typename T::openmode *
-          , typename T::seekdir *
-        );
-
-        template<typename T>
-        no_type check_is_iostream(...);
-
-        template<typename T>
-        struct is_iostream
-        {
-            static bool const value = sizeof(yes_type) == sizeof(check_is_iostream<T>(0,0,0,0,0,0));
-            typedef mpl::bool_<value> type;
-        };
-
-        /// INTERNAL ONLY
-        // This should be a customization point. And it serves the same purpose
-        // as the is_noncopyable trait in Boost.Foreach. 
-        template<typename T>
-        struct ref_only
-          : mpl::or_<
-                is_function<T>
-              , is_abstract<T>
-              , is_iostream<T>
-            >
-        {};
-
         /// INTERNAL ONLY
         template<typename Expr>
         struct expr_traits
@@ -102,7 +69,7 @@
         template<typename T>
         struct term_traits<T &>
         {
-            typedef typename mpl::if_c<ref_only<T>::value, T &, T>::type value_type;
+            typedef typename mpl::if_c<is_noncopyable<T>::value, T &, T>::type value_type;
             typedef T &reference;
             typedef T &const_reference;
         };
Added: trunk/boost/proto/detail/any.hpp
==============================================================================
--- (empty file)
+++ trunk/boost/proto/detail/any.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -0,0 +1,85 @@
+///////////////////////////////////////////////////////////////////////////////
+/// \file any.hpp
+/// Contains definition the detail::any type
+//
+//  Copyright 2012 Eric Niebler. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROTO_DETAIL_ANY_HPP_EAN_18_07_2012
+#define BOOST_PROTO_DETAIL_ANY_HPP_EAN_18_07_2012
+
+#include <boost/preprocessor/facilities/intercept.hpp>
+#include <boost/preprocessor/repetition/repeat.hpp>
+#include <boost/preprocessor/repetition/enum_params.hpp>
+#include <boost/proto/proto_fwd.hpp>
+
+namespace boost { namespace proto
+{
+    namespace detail
+    {
+        namespace anyns
+        {
+            ////////////////////////////////////////////////////////////////////////////////////////////
+            struct any
+            {
+                template<typename T> any(T const &) {}
+                any operator=(any);
+                any operator[](any);
+                #define M0(Z, N, DATA) any operator()(BOOST_PP_ENUM_PARAMS_Z(Z, N, any BOOST_PP_INTERCEPT));
+                BOOST_PP_REPEAT(BOOST_PROTO_MAX_ARITY, M0, ~)
+                #undef M0
+
+                template<typename T>
+                operator T &() const volatile;
+
+                any operator+();
+                any operator-();
+                any operator*();
+                any operator&();
+                any operator~();
+                any operator!();
+                any operator++();
+                any operator--();
+                any operator++(int);
+                any operator--(int);
+
+                friend any operator<<(any, any);
+                friend any operator>>(any, any);
+                friend any operator*(any, any);
+                friend any operator/(any, any);
+                friend any operator%(any, any);
+                friend any operator+(any, any);
+                friend any operator-(any, any);
+                friend any operator<(any, any);
+                friend any operator>(any, any);
+                friend any operator<=(any, any);
+                friend any operator>=(any, any);
+                friend any operator==(any, any);
+                friend any operator!=(any, any);
+                friend any operator||(any, any);
+                friend any operator&&(any, any);
+                friend any operator&(any, any);
+                friend any operator|(any, any);
+                friend any operator^(any, any);
+                friend any operator,(any, any);
+                friend any operator->*(any, any);
+
+                friend any operator<<=(any, any);
+                friend any operator>>=(any, any);
+                friend any operator*=(any, any);
+                friend any operator/=(any, any);
+                friend any operator%=(any, any);
+                friend any operator+=(any, any);
+                friend any operator-=(any, any);
+                friend any operator&=(any, any);
+                friend any operator|=(any, any);
+                friend any operator^=(any, any);
+            };
+        }
+
+        using anyns::any;
+    }
+}}
+
+#endif
Modified: trunk/boost/proto/detail/decltype.hpp
==============================================================================
--- trunk/boost/proto/detail/decltype.hpp	(original)
+++ trunk/boost/proto/detail/decltype.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -33,6 +33,8 @@
 #include <boost/utility/addressof.hpp>
 #include <boost/utility/result_of.hpp>
 #include <boost/utility/enable_if.hpp>
+#include <boost/proto/proto_fwd.hpp>
+#include <boost/proto/detail/any.hpp>
 
 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
 # pragma warning(push)
@@ -61,68 +63,6 @@
 {
     namespace detail
     {
-        namespace anyns
-        {
-            ////////////////////////////////////////////////////////////////////////////////////////////
-            struct any
-            {
-                any(...);
-                any operator=(any);
-                any operator[](any);
-                #define M0(Z, N, DATA) any operator()(BOOST_PP_ENUM_PARAMS_Z(Z, N, any BOOST_PP_INTERCEPT));
-                BOOST_PP_REPEAT(BOOST_PROTO_MAX_ARITY, M0, ~)
-                #undef M0
-
-                template<typename T>
-                operator T &() const volatile;
-
-                any operator+();
-                any operator-();
-                any operator*();
-                any operator&();
-                any operator~();
-                any operator!();
-                any operator++();
-                any operator--();
-                any operator++(int);
-                any operator--(int);
-
-                friend any operator<<(any, any);
-                friend any operator>>(any, any);
-                friend any operator*(any, any);
-                friend any operator/(any, any);
-                friend any operator%(any, any);
-                friend any operator+(any, any);
-                friend any operator-(any, any);
-                friend any operator<(any, any);
-                friend any operator>(any, any);
-                friend any operator<=(any, any);
-                friend any operator>=(any, any);
-                friend any operator==(any, any);
-                friend any operator!=(any, any);
-                friend any operator||(any, any);
-                friend any operator&&(any, any);
-                friend any operator&(any, any);
-                friend any operator|(any, any);
-                friend any operator^(any, any);
-                friend any operator,(any, any);
-                friend any operator->*(any, any);
-
-                friend any operator<<=(any, any);
-                friend any operator>>=(any, any);
-                friend any operator*=(any, any);
-                friend any operator/=(any, any);
-                friend any operator%=(any, any);
-                friend any operator+=(any, any);
-                friend any operator-=(any, any);
-                friend any operator&=(any, any);
-                friend any operator|=(any, any);
-                friend any operator^=(any, any);
-            };
-        }
-
-        using anyns::any;
-
         ////////////////////////////////////////////////////////////////////////////////////////////
         template<typename T>
         struct as_mutable
Added: trunk/boost/proto/detail/is_noncopyable.hpp
==============================================================================
--- (empty file)
+++ trunk/boost/proto/detail/is_noncopyable.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -0,0 +1,65 @@
+///////////////////////////////////////////////////////////////////////////////
+/// \file is_noncopyable.hpp
+/// Utility for detecting when types are non-copyable
+//
+//  Copyright 2008 Eric Niebler. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROTO_DETAIL_IS_NONCOPYABLE_HPP_EAN_19_07_2012
+#define BOOST_PROTO_DETAIL_IS_NONCOPYABLE_HPP_EAN_19_07_2012
+
+#include <boost/noncopyable.hpp>
+#include <boost/mpl/or.hpp>
+#include <boost/mpl/bool.hpp>
+#include <boost/type_traits/is_base_of.hpp>
+#include <boost/type_traits/is_abstract.hpp>
+#include <boost/type_traits/is_function.hpp>
+#include <boost/proto/proto_fwd.hpp>
+
+namespace boost { namespace proto { namespace detail
+{
+    // All classes derived from std::ios_base have these public nested types,
+    // and are non-copyable. This is an imperfect test, but it's the best we
+    // we can do.
+    template<typename T>
+    yes_type check_is_iostream(
+        typename T::failure *
+        , typename T::Init *
+        , typename T::fmtflags *
+        , typename T::iostate *
+        , typename T::openmode *
+        , typename T::seekdir *
+    );
+
+    template<typename T>
+    no_type check_is_iostream(...);
+
+    template<typename T>
+    struct is_iostream
+    {
+        static bool const value = sizeof(yes_type) == sizeof(check_is_iostream<T>(0,0,0,0,0,0));
+        typedef mpl::bool_<value> type;
+    };
+
+    /// INTERNAL ONLY
+    // This should be a customization point. And it serves the same purpose
+    // as the is_noncopyable trait in Boost.Foreach. 
+    template<typename T>
+    struct is_noncopyable
+        : mpl::or_<
+            is_function<T>
+          , is_abstract<T>
+          , is_iostream<T>
+          , is_base_of<noncopyable, T>
+        >
+    {};
+
+    template<typename T, std::size_t N>
+    struct is_noncopyable<T[N]>
+      : mpl::true_
+    {};
+
+}}}
+
+#endif
Modified: trunk/boost/proto/detail/poly_function.hpp
==============================================================================
--- trunk/boost/proto/detail/poly_function.hpp	(original)
+++ trunk/boost/proto/detail/poly_function.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -24,6 +24,7 @@
 #include <boost/preprocessor/repetition/enum_trailing_params.hpp>
 #include <boost/preprocessor/repetition/enum_binary_params.hpp>
 #include <boost/proto/proto_fwd.hpp>
+#include <boost/proto/detail/is_noncopyable.hpp>
 
 #ifdef _MSC_VER
 # pragma warning(push)
@@ -37,21 +38,28 @@
     template<typename T>
     struct normalize_arg
     {
-        typedef T type;
+        typedef typename mpl::if_c<is_noncopyable<T>::value, T &, T>::type type;
+        typedef T &reference;
+    };
+
+    template<typename T>
+    struct normalize_arg<T const>
+    {
+        typedef typename mpl::if_c<is_noncopyable<T>::value, T const &, T>::type type;
         typedef T const &reference;
     };
 
     template<typename T>
     struct normalize_arg<T &>
     {
-        typedef T type;
-        typedef T const &reference;
+        typedef typename mpl::if_c<is_noncopyable<T>::value, T &, T>::type type;
+        typedef T &reference;
     };
 
     template<typename T>
     struct normalize_arg<T const &>
     {
-        typedef T type;
+        typedef typename mpl::if_c<is_noncopyable<T>::value, T const &, T>::type type;
         typedef T const &reference;
     };
 
@@ -63,6 +71,13 @@
     };
 
     template<typename T>
+    struct normalize_arg<boost::reference_wrapper<T> const>
+    {
+        typedef T &type;
+        typedef T &reference;
+    };
+
+    template<typename T>
     struct normalize_arg<boost::reference_wrapper<T> &>
     {
         typedef T &type;
@@ -137,8 +152,8 @@
     {};
 
     ////////////////////////////////////////////////////////////////////////////////////////////////
-    #define BOOST_PROTO_POLY_FUNCTION()                                                         \
-        typedef void is_poly_function_base_;                                                    \
+    #define BOOST_PROTO_POLY_FUNCTION()                                                             \
+        typedef void is_poly_function_base_;                                                        \
         /**/
 
     ////////////////////////////////////////////////////////////////////////////////////////////////
Added: trunk/boost/proto/detail/static_const.hpp
==============================================================================
--- (empty file)
+++ trunk/boost/proto/detail/static_const.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -0,0 +1,27 @@
+///////////////////////////////////////////////////////////////////////////////
+/// \file static_const.hpp
+/// Contains definition of static_const for declaring static constants that 
+//
+//  Copyright 2008 Eric Niebler. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROTO_DETAIL_STATIC_CONST_HPP_EAN_20_07_2012
+#define BOOST_PROTO_DETAIL_STATIC_CONST_HPP_EAN_20_07_2012
+
+namespace boost { namespace proto
+{
+    namespace detail
+    {
+        template<typename T>
+        struct static_const
+        {
+            static T const value;
+        };
+
+        template<typename T>
+        T const static_const<T>::value = {};
+    }
+}}
+
+#endif
Modified: trunk/boost/proto/proto_fwd.hpp
==============================================================================
--- trunk/boost/proto/proto_fwd.hpp	(original)
+++ trunk/boost/proto/proto_fwd.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -485,6 +485,14 @@
         template<typename Tag, typename DomainOrSequence, typename SequenceOrVoid = void, typename Void = void>
         struct unpack_expr;
 
+        template<typename T>
+        struct as_env;
+
+        template<typename Env, typename Tag>
+        struct has_env_var;
+
+        template<typename Env, typename Tag>
+        struct env_var;
     }
 
     template<typename T, typename Void = void>
@@ -496,6 +504,9 @@
     template<typename SubDomain, typename SuperDomain>
     struct is_sub_domain_of;
 
+    template<typename T, typename Void = void>
+    struct is_env;
+
     template<typename Expr>
     struct arity_of;
 
@@ -588,6 +599,14 @@
         template<long N>
         struct child_c;
 
+        struct as_env;
+
+        template<typename Tag>
+        struct has_env_var;
+
+        template<typename Tag>
+        struct env_var;
+
         template<typename Tag, typename Domain = deduce_domain>
         struct make_expr;
 
@@ -730,6 +749,17 @@
         BOOST_PROTO_CALLABLE()
     };
 
+    struct data_type;
+
+    struct transforms_type;
+
+    struct key_not_found;
+
+    struct empty_env;
+
+    template<typename Tag, typename Value, typename Base = empty_env>
+    struct env;
+
     struct external_transform;
 
     template<typename PrimitiveTransform = void, typename X = void>
@@ -821,12 +851,14 @@
     struct _byref;
     struct _byval;
 
+    template<typename Tag>
+    struct _env_var;
+
+    struct _env;
+
     template<typename T>
     struct is_extension;
 
-    //namespace exops
-    //{}
-
     namespace exops = exprns_;
 
 }} // namespace boost::proto
Modified: trunk/boost/proto/transform.hpp
==============================================================================
--- trunk/boost/proto/transform.hpp	(original)
+++ trunk/boost/proto/transform.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -12,6 +12,7 @@
 #include <boost/proto/transform/arg.hpp>
 #include <boost/proto/transform/call.hpp>
 #include <boost/proto/transform/default.hpp>
+#include <boost/proto/transform/env.hpp>
 #include <boost/proto/transform/fold.hpp>
 #include <boost/proto/transform/fold_tree.hpp>
 #include <boost/proto/transform/integral_c.hpp>
Modified: trunk/boost/proto/transform/arg.hpp
==============================================================================
--- trunk/boost/proto/transform/arg.hpp	(original)
+++ trunk/boost/proto/transform/arg.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -9,10 +9,12 @@
 #ifndef BOOST_PROTO_TRANSFORM_ARG_HPP_EAN_11_01_2007
 #define BOOST_PROTO_TRANSFORM_ARG_HPP_EAN_11_01_2007
 
+#include <boost/mpl/if.hpp>
 #include <boost/proto/proto_fwd.hpp>
 #include <boost/proto/traits.hpp>
 #include <boost/proto/transform/impl.hpp>
 #include <boost/type_traits/is_array.hpp>
+#include <boost/proto/transform/env.hpp>
 
 namespace boost { namespace proto
 {
@@ -105,28 +107,13 @@
     struct _data : transform<_data>
     {
         template<typename Expr, typename State, typename Data>
-        struct impl : transform_impl<Expr, State, Data>
-        {
-            typedef Data result_type;
-
-            /// Returns the current data.
-            /// \param d The current data.
-            /// \return \c d
-            /// \throw nothrow
-            #ifdef BOOST_PROTO_STRICT_RESULT_OF
-            result_type
-            #else
-            typename impl::data_param 
-            #endif
-            operator ()(
-                typename impl::expr_param
-              , typename impl::state_param
-              , typename impl::data_param d
-            ) const
-            {
-                return d;
-            }
-        };
+        struct impl
+          : mpl::if_c<
+                is_env<Data>::value
+              , _env_var<data_type>
+              , _env
+            >::type::template impl<Expr, State, Data>
+        {};
     };
 
     /// \brief A PrimitiveTransform that returns N-th child of the current
Added: trunk/boost/proto/transform/env.hpp
==============================================================================
--- (empty file)
+++ trunk/boost/proto/transform/env.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -0,0 +1,493 @@
+///////////////////////////////////////////////////////////////////////////////
+// env.hpp
+// Helpers for producing and consuming tranform env variables.
+//
+//  Copyright 2012 Eric Niebler. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROTO_TRANSFORM_ENV_HPP_EAN_18_07_2012
+#define BOOST_PROTO_TRANSFORM_ENV_HPP_EAN_18_07_2012
+
+#include <boost/ref.hpp>
+#include <boost/utility/enable_if.hpp>
+#include <boost/type_traits/is_const.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include <boost/type_traits/add_const.hpp>
+#include <boost/type_traits/add_reference.hpp>
+#include <boost/type_traits/remove_const.hpp>
+#include <boost/mpl/assert.hpp>
+#include <boost/mpl/bool.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/mpl/not.hpp>
+#include <boost/proto/proto_fwd.hpp>
+#include <boost/proto/transform/impl.hpp>
+#include <boost/proto/detail/poly_function.hpp>
+#include <boost/proto/detail/is_noncopyable.hpp>
+
+#ifdef _MSC_VER
+# pragma warning(push)
+# pragma warning(disable: 4180) // qualifier applied to function type has no meaning; ignored
+#endif
+
+namespace boost
+{
+    namespace proto
+    {
+        namespace detail
+        {
+            template<typename T>
+            struct value_type
+            {
+                typedef typename remove_const<T>::type value;
+                typedef typename add_reference<T>::type reference;
+                typedef typename mpl::if_c<is_noncopyable<T>::value, reference, value>::type type;
+            };
+
+            template<typename T>
+            struct value_type<T &>
+            {
+                typedef T &value;
+                typedef T &reference;
+                typedef T &type;
+            };
+        }
+
+    #define BOOST_PROTO_DEFINE_ENV_VAR(TAG, NAME)                                                   \
+        struct TAG                                                                                  \
+        {                                                                                           \
+            template<typename Value>                                                                \
+            boost::proto::env<TAG, Value &> const                                                   \
+                operator =(boost::reference_wrapper<Value> &value) const                            \
+            {                                                                                       \
+                return boost::proto::env<TAG, Value &>(value.get());                                \
+            }                                                                                       \
+            template<typename Value>                                                                \
+            boost::proto::env<TAG, Value &> const                                                   \
+                operator =(boost::reference_wrapper<Value> const &value) const                      \
+            {                                                                                       \
+                return boost::proto::env<TAG, Value &>(value.get());                                \
+            }                                                                                       \
+            template<typename Value>                                                                \
+            typename boost::disable_if_c<                                                           \
+                boost::is_const<Value>::value                                                       \
+              , boost::proto::env<TAG, typename boost::proto::detail::value_type<Value>::type>      \
+            >::type const operator =(Value &value) const                                            \
+            {                                                                                       \
+                return boost::proto::env<TAG, typename boost::proto::detail::value_type<Value>::type>(value); \
+            }                                                                                       \
+            template<typename Value>                                                                \
+            boost::proto::env<TAG, typename boost::proto::detail::value_type<Value const>::type> const \
+                operator =(Value const &value) const                                                \
+            {                                                                                       \
+                return boost::proto::env<TAG, typename boost::proto::detail::value_type<Value const>::type>(value); \
+            }                                                                                       \
+        };                                                                                          \
+                                                                                                    \
+        TAG const NAME = {}                                                                         \
+        /**/
+
+        ////////////////////////////////////////////////////////////////////////////////////////////
+        // env
+        // A transform env is a slot-based storage mechanism, accessible by tag.
+        template<typename Tag, typename Value, typename Base /*= empty_env*/>
+        struct env
+          : private Base
+        {
+        private:
+            Value value_;
+
+        public:
+            typedef Value value_type;
+            typedef typename add_reference<Value>::type reference;
+            typedef typename add_reference<typename add_const<Value>::type>::type const_reference;
+            typedef void proto_environment_; ///< INTERNAL ONLY
+
+            env(const_reference value, Base const &base = Base())
+              : Base(base)
+              , value_(value)
+            {}
+
+            template<typename OtherTag, typename OtherValue = key_not_found>
+            struct lookup
+              : Base::template lookup<OtherTag, OtherValue>
+            {};
+
+            template<typename OtherValue>
+            struct lookup<Tag, OtherValue>
+            {
+                typedef Value type;
+                typedef typename add_reference<typename add_const<Value>::type>::type const_reference;
+            };
+
+            // For key-based lookups not intended to fail
+            using Base::operator[];
+            const_reference operator[](Tag) const
+            {
+                return this->value_;
+            }
+
+            // For key-based lookups that can fail, use the default if key not found.
+            using Base::at;
+            template<typename T>
+            const_reference at(Tag, T const &) const
+            {
+                return this->value_;
+            }
+        };
+
+        // define proto::data_type type and proto::data global
+        BOOST_PROTO_DEFINE_ENV_VAR(data_type, data);
+
+        namespace functional
+        {
+            ////////////////////////////////////////////////////////////////////////////////////////
+            // as_env
+            struct as_env
+            {
+                BOOST_PROTO_CALLABLE()
+                BOOST_PROTO_POLY_FUNCTION()
+
+                /// INTERNAL ONLY
+                template<typename T, bool B = is_env<T>::value>
+                struct impl
+                {
+                    typedef env<data_type, typename detail::value_type<T>::type> result_type;
+
+                    result_type const operator()(detail::arg<T> t) const
+                    {
+                        return result_type(t());
+                    }
+                };
+
+                /// INTERNAL ONLY
+                template<typename T>
+                struct impl<T, true>
+                {
+                    typedef T result_type;
+
+                    typename add_const<T>::type operator()(detail::arg<T> t) const
+                    {
+                        return t();
+                    }
+                };
+
+                template<typename Sig>
+                struct result;
+
+                template<typename This, typename T>
+                struct result<This(T)>
+                {
+                    typedef typename impl<typename detail::normalize_arg<T>::type>::result_type type;
+                };
+
+                template<typename T>
+                typename impl<typename detail::normalize_arg<T &>::type>::result_type const
+                    operator()(T &t BOOST_PROTO_DISABLE_IF_IS_CONST(T)) const
+                {
+                    return impl<typename detail::normalize_arg<T &>::type>()(
+                        static_cast<typename detail::normalize_arg<T &>::reference>(t)
+                    );
+                }
+
+                template<typename T>
+                typename impl<typename detail::normalize_arg<T const &>::type>::result_type const
+                    operator()(T const &t) const
+                {
+                    return impl<typename detail::normalize_arg<T const &>::type>()(
+                        static_cast<typename detail::normalize_arg<T const &>::reference>(t)
+                    );
+                }
+            };
+
+            ////////////////////////////////////////////////////////////////////////////////////////
+            // has_env_var
+            template<typename Tag>
+            struct has_env_var
+              : detail::poly_function<has_env_var<Tag> >
+            {
+                BOOST_PROTO_CALLABLE()
+
+                template<typename Env, bool IsEnv = is_env<Env>::value>
+                struct impl
+                {
+                    typedef
+                        mpl::not_<
+                            is_same<
+                                typename remove_reference<Env>::type::template lookup<Tag>::type
+                              , key_not_found
+                            >
+                        >
+                    result_type;
+
+                    result_type operator()(detail::arg<Env>) const
+                    {
+                        return result_type();
+                    }
+                };
+
+                template<typename Env>
+                struct impl<Env, false>
+                {
+                    typedef mpl::false_ result_type;
+
+                    result_type operator()(detail::arg<Env>) const
+                    {
+                        return result_type();
+                    }
+                };
+            };
+
+            template<>
+            struct has_env_var<data_type>
+              : detail::poly_function<has_env_var<data_type> >
+            {
+                BOOST_PROTO_CALLABLE()
+
+                template<typename Env, bool IsEnv = is_env<Env>::value>
+                struct impl
+                {
+                    typedef
+                        mpl::not_<
+                            is_same<
+                                typename remove_reference<Env>::type::template lookup<data_type>::type
+                              , key_not_found
+                            >
+                        >
+                    result_type;
+
+                    result_type operator()(detail::arg<Env>) const
+                    {
+                        return result_type();
+                    }
+                };
+
+                template<typename Env>
+                struct impl<Env, false>
+                {
+                    typedef mpl::true_ result_type;
+
+                    result_type operator()(detail::arg<Env>) const
+                    {
+                        return result_type();
+                    }
+                };
+            };
+
+            ////////////////////////////////////////////////////////////////////////////////////////
+            // env_var
+            template<typename Tag>
+            struct env_var
+              : detail::poly_function<env_var<Tag> >
+            {
+                BOOST_PROTO_CALLABLE()
+
+                template<typename Env>
+                struct impl
+                {
+                    typedef
+                        typename remove_reference<Env>::type::template lookup<Tag>::type
+                    result_type;
+
+                    result_type operator()(detail::arg<Env> e) const
+                    {
+                        return e()[Tag()];
+                    }
+                };
+            };
+
+            template<>
+            struct env_var<data_type>
+              : detail::poly_function<env_var<data_type> >
+            {
+                BOOST_PROTO_CALLABLE()
+
+                template<typename Env, bool B = is_env<Env>::value>
+                struct impl
+                {
+                    typedef Env result_type;
+
+                    result_type operator()(detail::arg<Env> e) const
+                    {
+                        return e();
+                    }
+                };
+
+                template<typename Env>
+                struct impl<Env, true>
+                {
+                    typedef
+                        typename remove_reference<Env>::type::template lookup<data_type>::type
+                    result_type;
+
+                    result_type operator()(detail::arg<Env> e) const
+                    {
+                        return e()[proto::data];
+                    }
+                };
+            };
+        }
+
+        namespace result_of
+        {
+            template<typename T>
+            struct as_env
+              : boost::result_of<functional::as_env(T)>
+            {};
+
+            template<typename Env, typename Tag>
+            struct has_env_var
+              : boost::result_of<functional::has_env_var<Tag>(Env)>::type
+            {};
+
+            template<typename Env, typename Tag>
+            struct env_var
+              : boost::result_of<functional::env_var<Tag>(Env)>
+            {};
+        }
+
+        ////////////////////////////////////////////////////////////////////////////////////////////
+        // as_env
+        template<typename T>
+        typename proto::result_of::as_env<T &>::type const as_env(T &t BOOST_PROTO_DISABLE_IF_IS_CONST(T))
+        {
+            return proto::functional::as_env()(t);
+        }
+
+        template<typename T>
+        typename proto::result_of::as_env<T const &>::type const as_env(T const &t)
+        {
+            return proto::functional::as_env()(t);
+        }
+
+        ////////////////////////////////////////////////////////////////////////////////////////////
+        // has_env_var
+        template<typename Tag, typename Env>
+        typename proto::result_of::has_env_var<Env &, Tag>::type has_env_var(Env &e BOOST_PROTO_DISABLE_IF_IS_CONST(Env))
+        {
+            return functional::has_env_var<Tag>()(e);
+        }
+
+        template<typename Tag, typename Env>
+        typename proto::result_of::has_env_var<Env const &, Tag>::type has_env_var(Env const &e)
+        {
+            return functional::has_env_var<Tag>()(e);
+        }
+
+        ////////////////////////////////////////////////////////////////////////////////////////////
+        // env_var
+        template<typename Tag, typename Env>
+        typename proto::result_of::env_var<Env &, Tag>::type env_var(Env &e BOOST_PROTO_DISABLE_IF_IS_CONST(Env))
+        {
+            return functional::env_var<Tag>()(e);
+        }
+
+        template<typename Tag, typename Env>
+        typename proto::result_of::env_var<Env const &, Tag>::type env_var(Env const &e)
+        {
+            return functional::env_var<Tag>()(e);
+        }
+
+        ////////////////////////////////////////////////////////////////////////////////////////////
+        // env operator,
+        template<typename T, typename T1, typename V1>
+        inline typename disable_if_c<
+            is_const<T>::value
+          , env<T1, V1, BOOST_PROTO_UNCVREF(typename result_of::as_env<T &>::type)>
+        >::type const operator,(T &t, env<T1, V1> const &head)
+        {
+            return env<T1, V1, BOOST_PROTO_UNCVREF(typename result_of::as_env<T &>::type)>(
+                head[T1()]
+              , proto::as_env(t)
+            );
+        }
+
+        template<typename T, typename T1, typename V1>
+        inline env<T1, V1, BOOST_PROTO_UNCVREF(typename result_of::as_env<T const &>::type)> const
+            operator,(T const &t, env<T1, V1> const &head)
+        {
+            return env<T1, V1, BOOST_PROTO_UNCVREF(typename result_of::as_env<T const &>::type)>(
+                head[T1()]
+              , proto::as_env(t)
+            );
+        }
+
+        ////////////////////////////////////////////////////////////////////////////////////////////
+        // _env_var
+        template<typename Tag>
+        struct _env_var
+          : proto::transform<_env_var<Tag> >
+        {
+            template<typename Expr, typename State, typename Data>
+            struct impl
+              : transform_impl<Expr, State, Data>
+            {
+                typedef typename impl::data::template lookup<Tag>::type result_type;
+                BOOST_MPL_ASSERT_NOT((is_same<result_type, key_not_found>)); // lookup failed
+
+                #ifdef BOOST_PROTO_STRICT_RESULT_OF
+                result_type
+                #else
+                typename impl::data::template lookup<Tag>::const_reference
+                #endif
+                operator ()(
+                    typename impl::expr_param
+                  , typename impl::state_param
+                  , typename impl::data_param d
+                ) const
+                {
+                    return d[Tag()];
+                }
+            };
+        };
+
+        struct _env
+          : transform<_env>
+        {
+            template<typename Expr, typename State, typename Data>
+            struct impl
+              : transform_impl<Expr, State, Data>
+            {
+                typedef Data result_type;
+
+                #ifdef BOOST_PROTO_STRICT_RESULT_OF
+                result_type
+                #else
+                typename impl::data_param
+                #endif
+                operator ()(
+                    typename impl::expr_param
+                  , typename impl::state_param
+                  , typename impl::data_param d
+                ) const
+                {
+                    return d;
+                }
+            };
+        };
+
+        /// INTERNAL ONLY
+        template<typename Tag>
+        struct is_callable<_env_var<Tag> >
+          : mpl::true_
+        {};
+
+        /// INTERNAL ONLY
+        template<typename Tag>
+        struct is_callable<functional::has_env_var<Tag> >
+          : mpl::true_
+        {};
+
+        /// INTERNAL ONLY
+        template<typename Tag>
+        struct is_callable<functional::env_var<Tag> >
+          : mpl::true_
+        {};
+    }
+}
+
+#ifdef _MSC_VER
+# pragma warning(pop)
+#endif
+
+#endif
Modified: trunk/boost/proto/transform/impl.hpp
==============================================================================
--- trunk/boost/proto/transform/impl.hpp	(original)
+++ trunk/boost/proto/transform/impl.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -10,7 +10,12 @@
 #define BOOST_PROTO_TRANSFORM_IMPL_HPP_EAN_04_03_2008
 
 #include <boost/config.hpp>
+#include <boost/mpl/bool.hpp>
+#include <boost/type_traits/add_const.hpp>
+#include <boost/type_traits/add_reference.hpp>
 #include <boost/proto/proto_fwd.hpp>
+#include <boost/proto/detail/any.hpp>
+#include <boost/proto/detail/static_const.hpp>
 
 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
 # pragma warning(push)
@@ -19,6 +24,54 @@
 
 namespace boost { namespace proto
 {
+    ////////////////////////////////////////////////////////////////////////////////////////////
+    struct key_not_found
+    {};
+
+    ////////////////////////////////////////////////////////////////////////////////////////////
+    // empty_env
+    struct empty_env
+    {
+        typedef void proto_environment_;
+
+        template<typename OtherTag, typename OtherValue = key_not_found>
+        struct lookup
+        {
+            typedef OtherValue type;
+            typedef
+                typename add_reference<typename add_const<OtherValue>::type>::type
+            const_reference;
+        };
+
+        key_not_found operator[](detail::any) const
+        {
+            return key_not_found();
+        }
+
+        template<typename T>
+        T const &at(detail::any, T const &t) const
+        {
+            return t;
+        }
+    };
+
+    ////////////////////////////////////////////////////////////////////////////////////////////
+    // is_env
+    template<typename T, typename Void>
+    struct is_env
+      : mpl::false_
+    {};
+
+    template<typename T>
+    struct is_env<T, typename T::proto_environment_>
+      : mpl::true_
+    {};
+
+    template<typename T>
+    struct is_env<T &, void>
+      : is_env<T>
+    {};
+
 #ifdef BOOST_NO_RVALUE_REFERENCES
 
     /// INTERNAL ONLY
@@ -40,7 +93,8 @@
     operator ()(Expr &e) const                                                                                  \
     {                                                                                                           \
         int i = 0;                                                                                              \
-        return boost::proto::detail::apply_transform<transform_type(Expr &)>()(e, i, i);                        \
+        boost::proto::empty_env d;                                                                              \
+        return boost::proto::detail::apply_transform<transform_type(Expr &)>()(e, i, d);                        \
     }                                                                                                           \
                                                                                                                 \
     template<typename Expr, typename State>                                                                     \
@@ -48,8 +102,8 @@
     typename boost::proto::detail::apply_transform<transform_type(Expr &, State &)>::result_type                \
     operator ()(Expr &e, State &s) const                                                                        \
     {                                                                                                           \
-        int i = 0;                                                                                              \
-        return boost::proto::detail::apply_transform<transform_type(Expr &, State &)>()(e, s, i);               \
+        boost::proto::empty_env d;                                                                              \
+        return boost::proto::detail::apply_transform<transform_type(Expr &, State &)>()(e, s, d);               \
     }                                                                                                           \
                                                                                                                 \
     template<typename Expr, typename State>                                                                     \
@@ -57,8 +111,8 @@
     typename boost::proto::detail::apply_transform<transform_type(Expr &, State const &)>::result_type          \
     operator ()(Expr &e, State const &s) const                                                                  \
     {                                                                                                           \
-        int i = 0;                                                                                              \
-        return boost::proto::detail::apply_transform<transform_type(Expr &, State const &)>()(e, s, i);         \
+        boost::proto::empty_env d;                                                                              \
+        return boost::proto::detail::apply_transform<transform_type(Expr &, State const &)>()(e, s, d);         \
     }                                                                                                           \
                                                                                                                 \
     template<typename Expr, typename State, typename Data>                                                      \
@@ -99,7 +153,8 @@
     operator ()(Expr &&e) const                                                                                 \
     {                                                                                                           \
         int i = 0;                                                                                              \
-        return boost::proto::detail::apply_transform<transform_type(Expr const &)>()(e, i, i);                  \
+        boost::proto::empty_env d;                                                                              \
+        return boost::proto::detail::apply_transform<transform_type(Expr const &)>()(e, i, d);                  \
     }                                                                                                           \
                                                                                                                 \
     template<typename Expr, typename State>                                                                     \
@@ -107,8 +162,8 @@
     typename boost::proto::detail::apply_transform<transform_type(Expr const &, State const &)>::result_type    \
     operator ()(Expr &&e, State &&s) const                                                                      \
     {                                                                                                           \
-        int i = 0;                                                                                              \
-        return boost::proto::detail::apply_transform<transform_type(Expr const &, State const &)>()(e, s, i);   \
+        boost::proto::empty_env d;                                                                              \
+        return boost::proto::detail::apply_transform<transform_type(Expr const &, State const &)>()(e, s, d);   \
     }                                                                                                           \
                                                                                                                 \
     template<typename Expr, typename State, typename Data>                                                      \
@@ -133,12 +188,12 @@
 
         template<typename PrimitiveTransform, typename Expr>
         struct apply_transform<PrimitiveTransform(Expr)>
-          : PrimitiveTransform::template impl<Expr, int, int>
+          : PrimitiveTransform::template impl<Expr, int, empty_env>
         {};
 
         template<typename PrimitiveTransform, typename Expr, typename State>
         struct apply_transform<PrimitiveTransform(Expr, State)>
-          : PrimitiveTransform::template impl<Expr, State, int>
+          : PrimitiveTransform::template impl<Expr, State, empty_env>
         {};
 
         template<typename PrimitiveTransform, typename Expr, typename State, typename Data>
Modified: trunk/boost/proto/transform/when.hpp
==============================================================================
--- trunk/boost/proto/transform/when.hpp	(original)
+++ trunk/boost/proto/transform/when.hpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -16,11 +16,13 @@
 #include <boost/mpl/at.hpp>
 #include <boost/mpl/if.hpp>
 #include <boost/mpl/map.hpp>
+#include <boost/mpl/eval_if.hpp>
 #include <boost/proto/proto_fwd.hpp>
 #include <boost/proto/traits.hpp>
 #include <boost/proto/transform/call.hpp>
 #include <boost/proto/transform/make.hpp>
 #include <boost/proto/transform/impl.hpp>
+#include <boost/proto/transform/env.hpp>
 
 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
 # pragma warning(push)
@@ -155,6 +157,9 @@
       : when<_, Fun>
     {};
 
+    // Define the transforms global
+    BOOST_PROTO_DEFINE_ENV_VAR(transforms_type, transforms);
+
     /// \brief This specialization uses the Data parameter as a collection
     /// of transforms that can be indexed by the specified rule.
     ///
@@ -174,12 +179,13 @@
 
         template<typename Expr, typename State, typename Data>
         struct impl
-          : Data::template when<Grammar>::template impl<Expr, State, Data>
-        {};
-
-        template<typename Expr, typename State, typename Data>
-        struct impl<Expr, State, Data &>
-          : Data::template when<Grammar>::template impl<Expr, State, Data &>
+          : remove_reference<
+                typename mpl::eval_if_c<
+                    proto::result_of::has_env_var<Data, transforms_type>::value
+                  , proto::result_of::env_var<Data, transforms_type>
+                  , proto::result_of::env_var<Data, data_type>
+                >::type
+            >::type::template when<Grammar>::template impl<Expr, State, Data>
         {};
     };
 
Modified: trunk/libs/proto/example/external_transforms.cpp
==============================================================================
--- trunk/libs/proto/example/external_transforms.cpp	(original)
+++ trunk/libs/proto/example/external_transforms.cpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -86,7 +86,7 @@
 struct division_by_zero : std::exception {};
 
 struct do_checked_divide
-    : proto::callable
+  : proto::callable
 {
     typedef int result_type;
     int operator()(int left, int right) const
Modified: trunk/libs/proto/test/Jamfile.v2
==============================================================================
--- trunk/libs/proto/test/Jamfile.v2	(original)
+++ trunk/libs/proto/test/Jamfile.v2	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -26,7 +26,9 @@
         [ run deep_copy.cpp ]
         [ run display_expr.cpp ]
         [ run deduce_domain.cpp ]
+        [ run env_var.cpp ]
         [ run examples.cpp ]
+        [ run external_transforms.cpp ]
         [ run lambda.cpp ]
         [ run make_expr.cpp ]
         [ run matches.cpp ]
Added: trunk/libs/proto/test/env_var.cpp
==============================================================================
--- (empty file)
+++ trunk/libs/proto/test/env_var.cpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -0,0 +1,297 @@
+///////////////////////////////////////////////////////////////////////////////
+// env_var.cpp
+//
+//  Copyright 2012 Eric Niebler. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <cstring>
+#include <sstream>
+#include <boost/config.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/proto/proto.hpp>
+#include <boost/test/unit_test.hpp>
+
+namespace proto = boost::proto;
+
+BOOST_PROTO_DEFINE_ENV_VAR(tag0_type, tag0);
+
+struct abstract
+{
+    virtual ~abstract() = 0;
+};
+
+abstract::~abstract() {}
+
+struct concrete : abstract
+{
+    ~concrete() {}
+};
+
+template<typename Tag, typename Env>
+void assert_has_env_var(Env const &)
+{
+    BOOST_MPL_ASSERT((proto::result_of::has_env_var<Env, Tag>));
+}
+
+template<typename Tag, typename Env>
+void assert_has_env_var_not(Env const &)
+{
+    BOOST_MPL_ASSERT_NOT((proto::result_of::has_env_var<Env, Tag>));
+}
+
+void test_is_env()
+{
+    BOOST_MPL_ASSERT_NOT((proto::is_env<int>));
+    BOOST_MPL_ASSERT_NOT((proto::is_env<int &>));
+    BOOST_MPL_ASSERT_NOT((proto::is_env<int const &>));
+
+    BOOST_MPL_ASSERT_NOT((proto::is_env<abstract>));
+    BOOST_MPL_ASSERT_NOT((proto::is_env<abstract &>));
+    BOOST_MPL_ASSERT_NOT((proto::is_env<abstract const &>));
+
+    BOOST_MPL_ASSERT((proto::is_env<proto::empty_env>));
+    BOOST_MPL_ASSERT((proto::is_env<proto::empty_env &>));
+    BOOST_MPL_ASSERT((proto::is_env<proto::empty_env const &>));
+
+    BOOST_MPL_ASSERT((proto::is_env<proto::env<tag0_type, int> >));
+    BOOST_MPL_ASSERT((proto::is_env<proto::env<tag0_type, int> &>));
+    BOOST_MPL_ASSERT((proto::is_env<proto::env<tag0_type, int> const &>));
+}
+
+void test_as_env()
+{
+    proto::env<proto::data_type, int> e0 = proto::as_env(2);
+    BOOST_CHECK_EQUAL(e0[proto::data], 2);
+    assert_has_env_var<proto::data_type>(e0);
+    assert_has_env_var_not<tag0_type>(e0);
+
+    int i = 39;
+    proto::env<proto::data_type, int &> e1 = proto::as_env(boost::ref(i));
+    assert_has_env_var<proto::data_type>(i);
+    assert_has_env_var_not<tag0_type>(i);
+    BOOST_CHECK_EQUAL(e1[proto::data], 39);
+    BOOST_CHECK_EQUAL(&e1[proto::data], &i);
+
+    proto::empty_env e2 = proto::as_env(proto::empty_env());
+    proto::env<proto::data_type, int &> e3 = proto::as_env(e1);
+    proto::env<proto::data_type, int &> & e4 = proto::as_env(boost::ref(e1));
+    BOOST_CHECK_EQUAL(&e4, &e1);
+
+    concrete c;
+    abstract &a = c;
+    std::stringstream sout;
+    int rgi[2] = {};
+    proto::env<proto::data_type, abstract &> e5 = proto::as_env(a);
+    proto::env<proto::data_type, std::stringstream &> e6 = proto::as_env(sout);
+    BOOST_CHECK_EQUAL(&e6[proto::data], &sout);
+    proto::env<proto::data_type, int(&)[2]> e7 = proto::as_env(rgi);
+    BOOST_CHECK_EQUAL(&e7[proto::data][0], &rgi[0]);
+    proto::env<proto::data_type, void(&)()> e8 = proto::as_env(test_as_env);
+    BOOST_CHECK_EQUAL(&e8[proto::data], &test_as_env);
+}
+
+void test_comma()
+{
+    proto::env<proto::data_type, int> e0 = (proto::data = 1);
+    BOOST_CHECK_EQUAL(e0[proto::data], 1);
+
+    int i = 39;
+    proto::env<proto::data_type, int &> e1 = (proto::data = boost::ref(i));
+    BOOST_CHECK_EQUAL(e1[proto::data], 39);
+    BOOST_CHECK_EQUAL(&e1[proto::data], &i);
+
+    concrete c;
+    abstract &a = c;
+    std::stringstream sout;
+    int rgi[2] = {};
+    proto::env<proto::data_type, abstract &> e5 = (proto::data = a);
+    proto::env<proto::data_type, std::stringstream &> e6 = (proto::data = sout);
+    BOOST_CHECK_EQUAL(&e6[proto::data], &sout);
+    proto::env<proto::data_type, int(&)[2]> e7 = (proto::data = rgi);
+    BOOST_CHECK_EQUAL(&e7[proto::data][0], &rgi[0]);
+    // The test below fails on msvc due to a compiler bug
+    // note: <https://connect.microsoft.com/VisualStudio/feedback/details/754684/premature-decay-of-function-types-in-overloaded-assignment-operator>
+#if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1600))
+    proto::env<proto::data_type, void(&)()> e8 = (proto::data = boost::ref(test_as_env));
+    BOOST_CHECK_EQUAL(&e8[proto::data], &test_as_env);
+#else
+    proto::env<proto::data_type, void(&)()> e8 = (proto::data = test_as_env);
+    BOOST_CHECK_EQUAL(&e8[proto::data], &test_as_env);
+#endif
+
+    proto::env<
+        tag0_type
+      , char const (&)[6]
+      , proto::env<proto::data_type, int>
+    > e9 = (proto::data = 1, tag0 = "hello");
+    BOOST_CHECK_EQUAL(e9[proto::data], 1);
+    BOOST_CHECK_EQUAL(0, std::strcmp(e9[tag0], "hello"));
+
+    proto::env<
+        tag0_type
+      , int
+      , proto::env<
+            tag0_type
+          , char const (&)[6]
+          , proto::env<proto::data_type, int>
+        >
+    > e10 = (proto::data = 1, tag0 = "hello", tag0 = 42);
+    BOOST_CHECK_EQUAL(e10[proto::data], 1);
+    BOOST_CHECK_EQUAL(e10[tag0], 42);
+
+    proto::env<
+        tag0_type
+      , char const (&)[6]
+      , proto::env<proto::data_type, abstract &>
+    > e11 = (a, tag0 = "hello");
+    BOOST_CHECK_EQUAL(&e11[proto::data], &a);
+    BOOST_CHECK_EQUAL(0, std::strcmp(e11[tag0], "hello"));
+
+    proto::env<
+        tag0_type
+      , int
+      , proto::env<
+            tag0_type
+          , char const (&)[6]
+          , proto::env<proto::data_type, abstract &>
+        >
+    > e12 = (a, tag0 = "hello", tag0 = 42);
+    BOOST_CHECK_EQUAL(&e12[proto::data], &a);
+    BOOST_CHECK_EQUAL(e12[tag0], 42);
+
+    proto::env<tag0_type, int> e13 = (proto::empty_env(), tag0 = 42);
+    BOOST_CHECK_EQUAL(e13[tag0], 42);
+    assert_has_env_var<tag0_type>(e13);
+    assert_has_env_var_not<proto::data_type>(e13);
+
+    proto::empty_env empty;
+    proto::env<tag0_type, int> e14 = (boost::ref(empty), tag0 = 42);
+    BOOST_CHECK_EQUAL(e14[tag0], 42);
+
+    proto::env<
+        proto::data_type
+      , char const (&)[6]
+      , proto::env<tag0_type, int>
+    > e15 = (boost::ref(e14), proto::data = "hello");
+    BOOST_CHECK_EQUAL(e15[tag0], 42);
+    BOOST_CHECK_EQUAL(0, std::strcmp(e15[proto::data], "hello"));
+
+    proto::env<
+        proto::data_type
+      , char const (&)[6]
+      , proto::env<tag0_type, int>
+    > e16 = (proto::as_env(boost::ref(e14)), proto::data = "hello");
+    BOOST_CHECK_EQUAL(e16[tag0], 42);
+    BOOST_CHECK_EQUAL(0, std::strcmp(e16[proto::data], "hello"));
+}
+
+void test_result_of_env_var()
+{
+    typedef proto::empty_env env0_type;
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env0_type, proto::data_type>::type, proto::key_not_found>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env0_type &, proto::data_type>::type, proto::key_not_found>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env0_type const &, proto::data_type>::type, proto::key_not_found>));
+
+    typedef proto::env<proto::data_type, int> env1_type;
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env1_type, proto::data_type>::type, int>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env1_type &, proto::data_type>::type, int>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env1_type const &, proto::data_type>::type, int>));
+
+    typedef proto::env<proto::data_type, int &> env2_type;
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env2_type, proto::data_type>::type, int &>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env2_type &, proto::data_type>::type, int &>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env2_type const &, proto::data_type>::type, int &>));
+
+    typedef proto::env<proto::data_type, double, proto::env<tag0_type, abstract &> > env3_type;
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env3_type, proto::data_type>::type, double>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env3_type, tag0_type>::type, abstract &>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env3_type &, proto::data_type>::type, double>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env3_type &, tag0_type>::type, abstract &>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env3_type const &, proto::data_type>::type, double>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env3_type const &, tag0_type>::type, abstract &>));
+
+    typedef proto::env<tag0_type, double, proto::env<tag0_type, abstract &> > env4_type;
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env4_type, tag0_type>::type, double>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env4_type &, tag0_type>::type, double>));
+    BOOST_MPL_ASSERT((boost::is_same<proto::result_of::env_var<env4_type const &, tag0_type>::type, double>));
+}
+
+void test_env_var()
+{
+    proto::key_not_found x0 = proto::env_var<proto::data_type>(proto::empty_env());
+    proto::key_not_found x1 = proto::env_var<proto::data_type>(tag0 = 42);
+    int x2 = proto::env_var<tag0_type>(tag0 = 42);
+    BOOST_CHECK_EQUAL(x2, 42);
+    int x3 = proto::functional::env_var<tag0_type>()(tag0 = 42);
+    BOOST_CHECK_EQUAL(x3, 42);
+
+    int i = 43;
+    int & x4 = proto::env_var<tag0_type>(tag0 = boost::ref(i));
+    BOOST_CHECK_EQUAL(&x4, &i);
+    int & x5 = proto::functional::env_var<tag0_type>()(tag0 = boost::ref(i));
+    BOOST_CHECK_EQUAL(&x5, &i);
+
+    concrete c;
+    abstract &a = c;
+    abstract &x6 = proto::env_var<tag0_type>(tag0 = a);
+    BOOST_CHECK_EQUAL(&x6, &a);
+    abstract &x7 = proto::functional::env_var<tag0_type>()(tag0 = a);
+    BOOST_CHECK_EQUAL(&x7, &a);
+
+    abstract &x8 = proto::env_var<tag0_type>((42, tag0 = a));
+    BOOST_CHECK_EQUAL(&x8, &a);
+    abstract &x9 = proto::functional::env_var<tag0_type>()((42, tag0 = a));
+    BOOST_CHECK_EQUAL(&x9, &a);
+}
+
+void test_env_var_tfx()
+{
+    typedef proto::terminal<int>::type int_;
+    int_ i = {42};
+
+    // tests for _env
+    BOOST_MPL_ASSERT((boost::is_same<boost::result_of<proto::_env(int_ &)>::type, proto::empty_env>));
+    BOOST_MPL_ASSERT((boost::is_same<boost::result_of<proto::_env(int_ &, int)>::type, proto::empty_env>));
+    BOOST_MPL_ASSERT((boost::is_same<boost::result_of<proto::_env(int_ &, int &, float &)>::type, float &>));
+
+    // Bummer, is there any way around this?
+#ifdef BOOST_RESULT_OF_USE_DECLTYPE
+    BOOST_MPL_ASSERT((boost::is_same<boost::result_of<proto::_env(int_ &, int &, float)>::type, float const &>));
+    BOOST_MPL_ASSERT((boost::is_same<boost::tr1_result_of<proto::_env(int_ &, int &, float)>::type, float>));
+#else
+    BOOST_MPL_ASSERT((boost::is_same<boost::result_of<proto::_env(int_ &, int &, float)>::type, float>));
+    BOOST_MPL_ASSERT((boost::is_same<boost::tr1_result_of<proto::_env(int_ &, int &, float)>::type, float>));
+#endif
+
+    double d = 3.14;
+    double & rd = proto::_env()(i, 0, d);
+    BOOST_CHECK_EQUAL(&d, &rd);
+
+    proto::env<proto::data_type, int> e0 = proto::_env()(i, 0, proto::as_env(42));
+    BOOST_CHECK_EQUAL(e0[proto::data], 42);
+
+    proto::env<proto::data_type, int> e1 = proto::_env()(i, 0, proto::functional::as_env()(42));
+    BOOST_CHECK_EQUAL(e1[proto::data], 42);
+
+    proto::env<proto::data_type, int> e2 = proto::_env()(i, 0, (proto::data = 42));
+    BOOST_CHECK_EQUAL(e2[proto::data], 42);
+
+    proto::env<proto::data_type, int, proto::env<proto::data_type, int> > e3 = proto::_env()(i, 0, (42, proto::data = 43));
+    BOOST_CHECK_EQUAL(e3[proto::data], 43);
+}
+
+using namespace boost::unit_test;
+///////////////////////////////////////////////////////////////////////////////
+// init_unit_test_suite
+//
+test_suite* init_unit_test_suite( int argc, char* argv[] )
+{
+    test_suite *test = BOOST_TEST_SUITE("test for environment variables");
+    test->add(BOOST_TEST_CASE(&test_as_env));
+    test->add(BOOST_TEST_CASE(&test_comma));
+    test->add(BOOST_TEST_CASE(&test_result_of_env_var));
+    test->add(BOOST_TEST_CASE(&test_env_var));
+    test->add(BOOST_TEST_CASE(&test_env_var_tfx));
+    return test;
+}
Added: trunk/libs/proto/test/external_transforms.cpp
==============================================================================
--- (empty file)
+++ trunk/libs/proto/test/external_transforms.cpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -0,0 +1,185 @@
+//  Copyright 2011 Eric Niebler. Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+// This is an example of how to specify a transform externally so
+// that a single grammar can be used to drive multiple differnt
+// calculations. In particular, it defines a calculator grammar
+// that computes the result of an expression with either checked
+// or non-checked division.
+
+#include <iostream>
+#include <boost/mpl/int.hpp>
+#include <boost/mpl/next.hpp>
+#include <boost/mpl/min_max.hpp>
+#include <boost/fusion/container/vector.hpp>
+#include <boost/fusion/container/generation/make_vector.hpp>
+#include <boost/proto/proto.hpp>
+#include <boost/test/unit_test.hpp>
+
+namespace mpl = boost::mpl;
+namespace proto = boost::proto;
+namespace fusion = boost::fusion;
+using proto::_;
+
+// The argument placeholder type
+template<typename I> struct placeholder : I {};
+
+// Give each rule in the grammar a "name". This is so that we
+// can easily dispatch on it later.
+struct calc_grammar;
+struct divides_rule : proto::divides<calc_grammar, calc_grammar> {};
+
+// Use external transforms in calc_gramar
+struct calc_grammar
+  : proto::or_<
+        proto::when<
+            proto::terminal<placeholder<_> >
+            , proto::functional::at(proto::_state, proto::_value)
+        >
+      , proto::when<
+            proto::terminal<proto::convertible_to<double> >
+          , proto::_value
+        >
+      , proto::when<
+            proto::plus<calc_grammar, calc_grammar>
+          , proto::_default<calc_grammar>
+        >
+      , proto::when<
+            proto::minus<calc_grammar, calc_grammar>
+          , proto::_default<calc_grammar>
+        >
+      , proto::when<
+            proto::multiplies<calc_grammar, calc_grammar>
+          , proto::_default<calc_grammar>
+        >
+        // Note that we don't specify how division nodes are
+        // handled here. Proto::external_transform is a placeholder
+        // for an actual transform.
+      , proto::when<
+            divides_rule
+          , proto::external_transform
+        >
+    >
+{};
+
+template<typename E> struct calc_expr;
+struct calc_domain : proto::domain<proto::generator<calc_expr> > {};
+
+template<typename E>
+struct calc_expr
+  : proto::extends<E, calc_expr<E>, calc_domain>
+{
+    calc_expr(E const &e = E()) : calc_expr::proto_extends(e) {}
+};
+
+calc_expr<proto::terminal<placeholder<mpl::int_<0> > >::type> _1;
+calc_expr<proto::terminal<placeholder<mpl::int_<1> > >::type> _2;
+
+// Use proto::external_transforms to map from named grammar rules to
+// transforms.
+struct non_checked_division
+  : proto::external_transforms<
+        proto::when< divides_rule, proto::_default<calc_grammar> >
+    >
+{};
+
+struct division_by_zero : std::exception {};
+
+struct do_checked_divide
+  : proto::callable
+{
+    typedef int result_type;
+    int operator()(int left, int right) const
+    {
+        if (right == 0) throw division_by_zero();
+        return left / right;
+    }
+};
+
+// Use proto::external_transforms again, this time to map the divides_rule
+// to a transforms that performs checked division.
+struct checked_division
+  : proto::external_transforms<
+        proto::when<
+            divides_rule
+          , do_checked_divide(calc_grammar(proto::_left), calc_grammar(proto::_right))
+        >
+    >
+{};
+
+BOOST_PROTO_DEFINE_ENV_VAR(mydata_tag, mydata);
+
+void test_external_transforms()
+{
+    non_checked_division non_checked;
+    int result1 = calc_grammar()(_1 / _2, fusion::make_vector(6, 2), non_checked);
+    BOOST_CHECK_EQUAL(result1, 3);
+
+    // check that additional data slots are ignored
+    int result2 = calc_grammar()(_1 / _2, fusion::make_vector(8, 2), (non_checked, mydata = "foo"));
+    BOOST_CHECK_EQUAL(result2, 4);
+
+    // check that we can use the dedicated slot for this purpose
+    int result3 = calc_grammar()(_1 / _2, fusion::make_vector(8, 2), (42, proto::transforms = non_checked, mydata = "foo"));
+    BOOST_CHECK_EQUAL(result2, 4);
+
+    checked_division checked;
+    try
+    {
+        // This should throw
+        int result3 = calc_grammar()(_1 / _2, fusion::make_vector(6, 0), checked);
+        BOOST_CHECK(!"Didn't throw an exception"); // shouldn't get here!
+    }
+    catch(division_by_zero)
+    {
+        ; // OK
+    }
+    catch(...)
+    {
+        BOOST_CHECK(!"Unexpected exception"); // shouldn't get here!
+    }
+
+    try
+    {
+        // This should throw
+        int result4 = calc_grammar()(_1 / _2, fusion::make_vector(6, 0), (checked, mydata = test_external_transforms));
+        BOOST_CHECK(!"Didn't throw an exception"); // shouldn't get here!
+    }
+    catch(division_by_zero)
+    {
+        ; // OK
+    }
+    catch(...)
+    {
+        BOOST_CHECK(!"Unexpected exception"); // shouldn't get here!
+    }
+
+    try
+    {
+        // This should throw
+        int result5 = calc_grammar()(_1 / _2, fusion::make_vector(6, 0), (42, proto::transforms = checked, mydata = test_external_transforms));
+        BOOST_CHECK(!"Didn't throw an exception"); // shouldn't get here!
+    }
+    catch(division_by_zero)
+    {
+        ; // OK
+    }
+    catch(...)
+    {
+        BOOST_CHECK(!"Unexpected exception"); // shouldn't get here!
+    }
+}
+
+using namespace boost::unit_test;
+///////////////////////////////////////////////////////////////////////////////
+// init_unit_test_suite
+//
+test_suite* init_unit_test_suite( int argc, char* argv[] )
+{
+    test_suite *test = BOOST_TEST_SUITE("test for external transforms");
+
+    test->add(BOOST_TEST_CASE(&test_external_transforms));
+
+    return test;
+}
Modified: trunk/libs/proto/test/protect.cpp
==============================================================================
--- trunk/libs/proto/test/protect.cpp	(original)
+++ trunk/libs/proto/test/protect.cpp	2012-07-21 01:50:50 EDT (Sat, 21 Jul 2012)
@@ -19,40 +19,76 @@
     typedef T type;
 };
 
-struct Test
+struct TestWithMake
   : proto::make< proto::protect<_> >
 {};
 
-struct Test1
+struct TestWithMake1
   : proto::make< identity<proto::protect<_> > >
 {};
 
-struct Test2
+struct TestWithMake2
   : proto::make< identity<proto::protect<int> > >
 {};
 
-struct Test3
+struct TestWithMake3
   : proto::make< identity<proto::protect<identity<_> > > >
 {};
 
-struct Test4
+struct TestWithMake4
   : proto::make< identity<proto::protect<identity<int> > > >
 {};
 
-struct Test5
+struct TestWithMake5
   : proto::make< identity<proto::protect<identity<identity<int> > > > >
 {};
 
-void test_protect()
+void test_protect_with_make()
 {
     proto::terminal<int>::type i = {42};
 
-    _ t = Test()(i);
-    _ t1 = Test1()(i);
-    int t2 = Test2()(i);
-    identity<_> t3 = Test3()(i);
-    identity<int> t4 = Test4()(i);
-    identity<identity<int> > t5 = Test5()(i);
+    _ t = TestWithMake()(i);
+    _ t1 = TestWithMake1()(i);
+    int t2 = TestWithMake2()(i);
+    identity<_> t3 = TestWithMake3()(i);
+    identity<int> t4 = TestWithMake4()(i);
+    identity<identity<int> > t5 = TestWithMake5()(i);
+}
+
+//struct TestWithWhen
+//  : proto::when<_, proto::protect<_>() >
+//{};
+
+struct TestWithWhen1
+  : proto::when<_, identity<proto::protect<_> >() >
+{};
+
+struct TestWithWhen2
+  : proto::when<_, identity<proto::protect<int> >() >
+{};
+
+struct TestWithWhen3
+  : proto::when<_, identity<proto::protect<identity<_> > >() >
+{};
+
+struct TestWithWhen4
+  : proto::when<_, identity<proto::protect<identity<int> > >() >
+{};
+
+struct TestWithWhen5
+  : proto::when<_, identity<proto::protect<identity<identity<int> > > >() >
+{};
+
+void test_protect_with_when()
+{
+    proto::terminal<int>::type i = {42};
+
+    //_ t = TestWithWhen()(i);
+    _ t1 = TestWithWhen1()(i);
+    int t2 = TestWithWhen2()(i);
+    identity<_> t3 = TestWithWhen3()(i);
+    identity<int> t4 = TestWithWhen4()(i);
+    identity<identity<int> > t5 = TestWithWhen5()(i);
 }
 
 using namespace boost::unit_test;
@@ -63,7 +99,8 @@
 {
     test_suite *test = BOOST_TEST_SUITE("test proto::protect");
 
-    test->add(BOOST_TEST_CASE(&test_protect));
+    test->add(BOOST_TEST_CASE(&test_protect_with_make));
+    test->add(BOOST_TEST_CASE(&test_protect_with_when));
 
     return test;
 }