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85 lines
2.7 KiB
85 lines
2.7 KiB
// 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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