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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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