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- // Copyright (c) 2001-2011 Hartmut Kaiser
- // 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_LEX_REFERENCE_APR_20_2009_0827AM)
- #define BOOST_SPIRIT_LEX_REFERENCE_APR_20_2009_0827AM
- #if defined(_MSC_VER)
- #pragma once
- #endif
- #include <boost/spirit/home/lex/meta_compiler.hpp>
- #include <boost/spirit/home/lex/lexer_type.hpp>
- #include <boost/spirit/home/qi/reference.hpp>
- #include <boost/spirit/home/support/info.hpp>
- #include <boost/spirit/home/support/handles_container.hpp>
- #include <boost/ref.hpp>
- namespace boost { namespace spirit { namespace lex
- {
- ///////////////////////////////////////////////////////////////////////////
- // reference is a lexer that references another lexer (its Subject)
- // all lexer components are at the same time
- ///////////////////////////////////////////////////////////////////////////
- template <typename Subject, typename IdType = unused_type>
- struct reference;
- template <typename Subject>
- struct reference<Subject, unused_type>
- : qi::reference<Subject>
- , lexer_type<reference<Subject> >
- {
- reference(Subject& subject)
- : qi::reference<Subject>(subject) {}
- template <typename LexerDef, typename String>
- void collect(LexerDef& lexdef, String const& state
- , String const& targetstate) const
- {
- this->ref.get().collect(lexdef, state, targetstate);
- }
- template <typename LexerDef>
- void add_actions(LexerDef& lexdef) const
- {
- this->ref.get().add_actions(lexdef);
- }
- };
- template <typename Subject, typename IdType>
- struct reference : reference<Subject>
- {
- reference(Subject& subject)
- : reference<Subject>(subject) {}
- IdType id() const
- {
- return this->ref.get().id();
- }
- std::size_t unique_id() const
- {
- return this->ref.get().unique_id();
- }
- std::size_t state() const
- {
- return this->ref.get().state();
- }
- };
- }}}
- namespace boost { namespace spirit { namespace traits
- {
- ///////////////////////////////////////////////////////////////////////////
- template <typename Subject, typename IdType
- , typename Attribute, typename Context, typename Iterator>
- struct handles_container<lex::reference<Subject, IdType>
- , Attribute, Context, Iterator>
- : handles_container<
- typename remove_const<Subject>::type, Attribute, Context, Iterator>
- {};
- }}}
- #endif
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