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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_LEXER_TYPE_APR_20_2009_0759PM)
#define BOOST_SPIRIT_LEXER_TYPE_APR_20_2009_0759PM
#if defined(_MSC_VER)
#pragma once
#endif
#include <boost/mpl/has_xxx.hpp>
#include <boost/spirit/home/lex/domain.hpp>
namespace boost { namespace spirit { namespace lex
{
template <typename Derived>
struct lexer_type
{
struct lexer_id;
typedef Derived derived_type;
typedef lex::domain domain;
// Requirement: l.collect(def, state, targetstate) -> void
//
// l: a lexer component
// def: token definition container
// state: lexer state this token definition needs to be added to
// targetstate: an optional lexer state the lexer should be switched
// into after matching this token
Derived const& derived() const
{
return *static_cast<Derived const*>(this);
}
};
template <typename Derived>
struct primitive_lexer : lexer_type<Derived>
{
struct primitive_lexer_id;
};
template <typename Derived>
struct unary_lexer : lexer_type<Derived>
{
struct unary_lexer_id;
// Requirement: l.subject -> subject lexer component
//
// l: a unary lexer component
// Requirement: L::subject_type -> subject lexer component type
//
// L: a unary lexer component type
};
template <typename Derived>
struct nary_lexer : lexer_type<Derived>
{
struct nary_lexer_id;
// Requirement: l.elements -> fusion sequence
//
// l: a composite lexer component
// Requirement: L::elements_type -> fusion sequence
//
// L: a composite lexer component type
};
}}}
namespace boost { namespace spirit { namespace traits // classification
{
namespace detail
{
BOOST_MPL_HAS_XXX_TRAIT_DEF(lexer_id)
BOOST_MPL_HAS_XXX_TRAIT_DEF(primitive_lexer_id)
BOOST_MPL_HAS_XXX_TRAIT_DEF(unary_lexer_id)
BOOST_MPL_HAS_XXX_TRAIT_DEF(nary_lexer_id)
}
template <typename T>
struct is_lexer : detail::has_lexer_id<T> {};
template <typename T>
struct is_primitive_lexer : detail::has_primitive_lexer_id<T> {};
template <typename T>
struct is_unary_lexer : detail::has_unary_lexer_id<T> {};
template <typename T>
struct is_nary_lexer : detail::has_nary_lexer_id<T> {};
}}}
#endif
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