// 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 |