86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
// Copyright (c) 2001-2011 Hartmut Kaiser
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// Copyright (c) 2001-2011 Joel de Guzman
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#if !defined(BOOST_SPIRIT_LEX_REFERENCE_APR_20_2009_0827AM)
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#define BOOST_SPIRIT_LEX_REFERENCE_APR_20_2009_0827AM
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#if defined(_MSC_VER)
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#pragma once
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#endif
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#include <boost/spirit/home/lex/meta_compiler.hpp>
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#include <boost/spirit/home/lex/lexer_type.hpp>
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#include <boost/spirit/home/qi/reference.hpp>
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#include <boost/spirit/home/support/info.hpp>
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#include <boost/spirit/home/support/handles_container.hpp>
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#include <boost/ref.hpp>
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namespace boost { namespace spirit { namespace lex
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{
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///////////////////////////////////////////////////////////////////////////
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// reference is a lexer that references another lexer (its Subject)
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// all lexer components are at the same time
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///////////////////////////////////////////////////////////////////////////
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template <typename Subject, typename IdType = unused_type>
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struct reference;
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template <typename Subject>
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struct reference<Subject, unused_type>
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: qi::reference<Subject>
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, lexer_type<reference<Subject> >
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{
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reference(Subject& subject)
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: qi::reference<Subject>(subject) {}
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template <typename LexerDef, typename String>
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void collect(LexerDef& lexdef, String const& state
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, String const& targetstate) const
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{
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this->ref.get().collect(lexdef, state, targetstate);
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}
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template <typename LexerDef>
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void add_actions(LexerDef& lexdef) const
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{
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this->ref.get().add_actions(lexdef);
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}
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};
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template <typename Subject, typename IdType>
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struct reference : reference<Subject>
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{
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reference(Subject& subject)
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: reference<Subject>(subject) {}
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IdType id() const
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{
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return this->ref.get().id();
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}
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std::size_t unique_id() const
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{
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return this->ref.get().unique_id();
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}
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std::size_t state() const
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{
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return this->ref.get().state();
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}
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};
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}}}
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namespace boost { namespace spirit { namespace traits
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{
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///////////////////////////////////////////////////////////////////////////
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template <typename Subject, typename IdType
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, typename Attribute, typename Context, typename Iterator>
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struct handles_container<lex::reference<Subject, IdType>
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, Attribute, Context, Iterator>
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: handles_container<
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typename remove_const<Subject>::type, Attribute, Context, Iterator>
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{};
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}}}
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#endif
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