Subject: [Boost-commit] svn:boost r56465 - in trunk/boost/spirit: home/karma home/karma/auxiliary include
From: hartmut.kaiser_at_[hidden]
Date: 2009-09-28 21:26:14
Author: hkaiser
Date: 2009-09-28 21:26:13 EDT (Mon, 28 Sep 2009)
New Revision: 56465
URL: http://svn.boost.org/trac/boost/changeset/56465
Log:
Spirit: added karma attr_cast
Added:
trunk/boost/spirit/home/karma/auxiliary/attr_cast.hpp (contents, props changed)
trunk/boost/spirit/include/karma_attr_cast.hpp (contents, props changed)
Text files modified:
trunk/boost/spirit/home/karma/auxiliary.hpp | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
Modified: trunk/boost/spirit/home/karma/auxiliary.hpp
==============================================================================
--- trunk/boost/spirit/home/karma/auxiliary.hpp (original)
+++ trunk/boost/spirit/home/karma/auxiliary.hpp 2009-09-28 21:26:13 EDT (Mon, 28 Sep 2009)
@@ -13,5 +13,6 @@
#include <boost/spirit/home/karma/auxiliary/eps.hpp>
#include <boost/spirit/home/karma/auxiliary/eol.hpp>
#include <boost/spirit/home/karma/auxiliary/lazy.hpp>
+#include <boost/spirit/home/karma/auxiliary/attr_cast.hpp>
#endif
Added: trunk/boost/spirit/home/karma/auxiliary/attr_cast.hpp
==============================================================================
--- (empty file)
+++ trunk/boost/spirit/home/karma/auxiliary/attr_cast.hpp 2009-09-28 21:26:13 EDT (Mon, 28 Sep 2009)
@@ -0,0 +1,117 @@
+// Copyright (c) 2001-2009 Hartmut Kaiser
+//
+// 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_KARMA_ATTR_CAST_SEP_26_2009_0348PM)
+#define SPIRIT_KARMA_ATTR_CAST_SEP_26_2009_0348PM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/karma/meta_compiler.hpp>
+#include <boost/spirit/home/karma/generator.hpp>
+#include <boost/spirit/home/karma/domain.hpp>
+#include <boost/spirit/home/karma/detail/output_iterator.hpp>
+#include <boost/spirit/home/support/unused.hpp>
+#include <boost/spirit/home/support/info.hpp>
+#include <boost/spirit/home/support/common_terminals.hpp>
+#include <boost/spirit/home/support/attributes.hpp>
+
+namespace boost { namespace spirit
+{
+ ///////////////////////////////////////////////////////////////////////////
+ // enables attr_cast<>() pseudo generator
+ template <typename Expr, typename Attribute>
+ struct use_terminal<karma::domain
+ , tag::stateful_tag<Expr, tag::attr_cast, Attribute> >
+ : mpl::true_ {};
+
+ ///////////////////////////////////////////////////////////////////////////
+ // This one is the function that the user can call directly in order
+ // to create a customized attr_cast component
+ template <typename Attribute, typename Data>
+ stateful_tag_type<Data, tag::attr_cast, Attribute>
+ attr_cast(Data const& data)
+ {
+ return stateful_tag_type<Data, tag::attr_cast, Attribute>(data);
+ }
+}}
+
+namespace boost { namespace spirit { namespace karma
+{
+ using spirit::attr_cast;
+
+ ///////////////////////////////////////////////////////////////////////////
+ // attr_cast_generator consumes the attribute of subject generator without
+ // generating anything
+ ///////////////////////////////////////////////////////////////////////////
+ template <typename Attribute, typename Subject>
+ struct attr_cast_generator
+ : unary_generator<attr_cast_generator<Attribute, Subject> >
+ {
+ typedef typename result_of::compile<karma::domain, Subject>::type
+ subject_type;
+
+ typedef mpl::int_<subject_type::properties::value> properties;
+
+ attr_cast_generator(Subject const& subject)
+ : subject(subject)
+ {
+ // If you got an error_invalid_expression error message here,
+ // then the expression (Subject) is not a valid spirit karma
+ // expression.
+ BOOST_SPIRIT_ASSERT_MATCH(karma::domain, Subject);
+ }
+
+ template <typename Context, typename Unused>
+ struct attribute
+ {
+ typedef Attribute type;
+ };
+
+ template <typename OutputIterator, typename Context, typename Delimiter
+ , typename Attribute_>
+ bool generate(OutputIterator& sink, Context& ctx, Delimiter const& d
+ , Attribute_ const& attr) const
+ {
+ // create the proper attribute transformation
+ typedef traits::transform_attribute<
+ Attribute, Attribute_ const> transform;
+
+ return compile<karma::domain>(subject).
+ generate(sink, ctx, d, transform::call(attr));
+ }
+
+ template <typename Context>
+ info what(Context& context) const
+ {
+ return info("attr_cast"
+ , compile<karma::domain>(subject).what(context));
+ }
+
+ Subject subject;
+ };
+
+ ///////////////////////////////////////////////////////////////////////////
+ // Generator generator: make_xxx function (objects)
+ ///////////////////////////////////////////////////////////////////////////
+ template <typename Expr, typename Attribute, typename Modifiers>
+ struct make_primitive<
+ tag::stateful_tag<Expr, tag::attr_cast, Attribute>, Modifiers>
+ {
+ typedef attr_cast_generator<Attribute, Expr> result_type;
+
+ template <typename Terminal>
+ result_type operator()(Terminal const& term, unused_type) const
+ {
+ typedef tag::stateful_tag<Expr, tag::attr_cast, Attribute> tag_type;
+ using spirit::detail::get_stateful_data;
+ return result_type(get_stateful_data<tag_type>::call(term));
+ }
+ };
+
+}}}
+
+#endif
Added: trunk/boost/spirit/include/karma_attr_cast.hpp
==============================================================================
--- (empty file)
+++ trunk/boost/spirit/include/karma_attr_cast.hpp 2009-09-28 21:26:13 EDT (Mon, 28 Sep 2009)
@@ -0,0 +1,18 @@
+/*=============================================================================
+ Copyright (c) 2001-2009 Joel de Guzman
+ Copyright (c) 2001-2009 Hartmut Kaiser
+ http://spirit.sourceforge.net/
+
+ 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_SPIRIT_INCLUDE_KARMA_ATTR_CAST
+#define BOOST_SPIRIT_INCLUDE_KARMA_ATTR_CAST
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/karma/auxiliary/attr_cast.hpp>
+
+#endif