Subject: [Boost-commit] svn:boost r59519 - in trunk/boost/spirit/home: qi qi/directive support
From: joel_at_[hidden]
Date: 2010-02-05 20:51:35
Author: djowel
Date: 2010-02-05 20:51:34 EST (Fri, 05 Feb 2010)
New Revision: 59519
URL: http://svn.boost.org/trac/boost/changeset/59519
Log:
added hold directive
Added:
trunk/boost/spirit/home/qi/directive/hold.hpp (contents, props changed)
Text files modified:
trunk/boost/spirit/home/qi/directive.hpp | 1 +
trunk/boost/spirit/home/support/common_terminals.hpp | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)
Modified: trunk/boost/spirit/home/qi/directive.hpp
==============================================================================
--- trunk/boost/spirit/home/qi/directive.hpp (original)
+++ trunk/boost/spirit/home/qi/directive.hpp 2010-02-05 20:51:34 EST (Fri, 05 Feb 2010)
@@ -11,6 +11,7 @@
#pragma once
#endif
+#include <boost/spirit/home/qi/directive/hold.hpp>
#include <boost/spirit/home/qi/directive/lexeme.hpp>
#include <boost/spirit/home/qi/directive/matches.hpp>
#include <boost/spirit/home/qi/directive/no_case.hpp>
Added: trunk/boost/spirit/home/qi/directive/hold.hpp
==============================================================================
--- (empty file)
+++ trunk/boost/spirit/home/qi/directive/hold.hpp 2010-02-05 20:51:34 EST (Fri, 05 Feb 2010)
@@ -0,0 +1,100 @@
+/*=============================================================================
+ Copyright (c) 2001-2010 Joel de Guzman
+
+ 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)
+=============================================================================*/
+#if !defined(SPIRIT_HOLD_FEBRUARY_6_2010_0917AM)
+#define SPIRIT_HOLD_FEBRUARY_6_2010_0917AM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/qi/meta_compiler.hpp>
+#include <boost/spirit/home/qi/skip_over.hpp>
+#include <boost/spirit/home/qi/parser.hpp>
+#include <boost/spirit/home/support/attributes.hpp>
+//~ #include <boost/spirit/home/qi/detail/assign_to.hpp>
+#include <boost/spirit/home/support/info.hpp>
+#include <boost/spirit/home/support/common_terminals.hpp>
+#include <boost/spirit/home/support/unused.hpp>
+#include <boost/spirit/home/support/has_semantic_action.hpp>
+//~ #include <boost/range/iterator_range.hpp>
+
+namespace boost { namespace spirit
+{
+ ///////////////////////////////////////////////////////////////////////////
+ // Enablers
+ ///////////////////////////////////////////////////////////////////////////
+ template <>
+ struct use_directive<qi::domain, tag::hold> // enables hold
+ : mpl::true_ {};
+}}
+
+namespace boost { namespace spirit { namespace qi
+{
+ using spirit::hold;
+ using spirit::hold_type;
+
+ template <typename Subject>
+ struct hold_directive : unary_parser<hold_directive<Subject> >
+ {
+ typedef Subject subject_type;
+ hold_directive(Subject const& subject)
+ : subject(subject) {}
+
+ template <typename Context, typename Iterator>
+ struct attribute
+ {
+ typedef typename
+ traits::attribute_of<subject_type, Context, Iterator>::type
+ type;
+ };
+
+ template <typename Iterator, typename Context
+ , typename Skipper, typename Attribute>
+ bool parse(Iterator& first, Iterator const& last
+ , Context& context, Skipper const& skipper, Attribute& attr) const
+ {
+ Attribute copy(attr);
+ if (subject.parse(first, last, context, skipper, copy))
+ {
+ traits::swap_impl(copy, attr);
+ return true;
+ }
+ return false;
+ }
+
+ template <typename Context>
+ info what(Context& context) const
+ {
+ return info("hold", subject.what(context));
+
+ }
+
+ Subject subject;
+ };
+
+ ///////////////////////////////////////////////////////////////////////////
+ // Parser generators: make_xxx function (objects)
+ ///////////////////////////////////////////////////////////////////////////
+ template <typename Subject, typename Modifiers>
+ struct make_directive<tag::hold, Subject, Modifiers>
+ {
+ typedef hold_directive<Subject> result_type;
+ result_type operator()(unused_type, Subject const& subject, unused_type) const
+ {
+ return result_type(subject);
+ }
+ };
+}}}
+
+namespace boost { namespace spirit { namespace traits
+{
+ template <typename Subject>
+ struct has_semantic_action<qi::hold_directive<Subject> >
+ : unary_has_semantic_action<Subject> {};
+}}}
+
+#endif
Modified: trunk/boost/spirit/home/support/common_terminals.hpp
==============================================================================
--- trunk/boost/spirit/home/support/common_terminals.hpp (original)
+++ trunk/boost/spirit/home/support/common_terminals.hpp 2010-02-05 20:51:34 EST (Fri, 05 Feb 2010)
@@ -38,6 +38,7 @@
( true_ )
( false_ )
( matches )
+ ( hold )
)
// Here we are reusing proto::lit