comparison DEPENDENCIES/generic/include/boost/spirit/home/qi/reference.hpp @ 16:2665513ce2d3

Add boost headers

+/*=============================================================================
+    Copyright (c) 2001-2011 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(BOOST_SPIRIT_REFERENCE_OCTOBER_31_2008_1218AM)
+#define BOOST_SPIRIT_REFERENCE_OCTOBER_31_2008_1218AM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/qi/meta_compiler.hpp>
+#include <boost/spirit/home/qi/parser.hpp>
+#include <boost/spirit/home/support/info.hpp>
+#include <boost/spirit/home/support/handles_container.hpp>
+#include <boost/type_traits/remove_const.hpp>
+#include <boost/ref.hpp>
+
+namespace boost { namespace spirit { namespace qi
+{
+    ///////////////////////////////////////////////////////////////////////////
+    // reference is a parser that references another parser (its Subject)
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename Subject>
+    struct reference : parser<reference<Subject> >
+    {
+        typedef Subject subject_type;
+
+        reference(Subject& subject)
+          : ref(subject) {}
+
+        template <typename Context, typename Iterator>
+        struct attribute : Subject::template attribute<Context, Iterator> {};
+
+        template <typename Iterator, typename Context
+          , typename Skipper, typename Attribute>
+        bool parse(Iterator& first, Iterator const& last
+          , Context& context, Skipper const& skipper
+          , Attribute& attr_) const
+        {
+            return ref.get().parse(first, last, context, skipper, attr_);
+        }
+
+        template <typename Context>
+        info what(Context& context) const
+        {
+            // the reference is transparent (does not add any info)
+            return ref.get().what(context);
+        }
+
+        boost::reference_wrapper<Subject> ref;
+    };
+}}}
+
+namespace boost { namespace spirit { namespace traits
+{
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename Subject, typename Attribute, typename Context
+      , typename Iterator>
+    struct handles_container<qi::reference<Subject>, Attribute, Context
+      , Iterator>
+      : handles_container<typename remove_const<Subject>::type
+        , Attribute, Context, Iterator> 
+    {};
+}}}
+
+#endif