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/*=============================================================================
Boost.Wave: A Standard compliant C++ preprocessor library
Definition of the abstract lexer interface
http://www.boost.org/
Copyright (c) 2001-2008 Hartmut Kaiser. 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(SLEX_INTERFACE_HPP_E83F52A4_90AC_4FBE_A9A7_B65F7F94C497_INCLUDED)
#define SLEX_INTERFACE_HPP_E83F52A4_90AC_4FBE_A9A7_B65F7F94C497_INCLUDED
#include <boost/wave/language_support.hpp>
#include <boost/wave/util/file_position.hpp>
#include <boost/wave/cpplexer/cpp_lex_interface.hpp>
///////////////////////////////////////////////////////////////////////////////
namespace boost {
namespace wave {
namespace cpplexer {
namespace slex {
#if BOOST_WAVE_SEPARATE_LEXER_INSTANTIATION != 0
#define BOOST_WAVE_NEW_LEXER_DECL BOOST_WAVE_DECL
#else
#define BOOST_WAVE_NEW_LEXER_DECL
#endif
///////////////////////////////////////////////////////////////////////////////
//
// new_lexer_gen: generates a new instance of the required C++ lexer
//
///////////////////////////////////////////////////////////////////////////////
template <
typename IteratorT,
typename PositionT = boost::wave::util::file_position_type
>
struct BOOST_WAVE_NEW_LEXER_DECL new_lexer_gen
{
// The NewLexer function allows the opaque generation of a new lexer object.
// It is coupled to the token type to allow to decouple the lexer/token
// configurations at compile time.
static lex_input_interface<slex_token<PositionT> > *
new_lexer(IteratorT const &first, IteratorT const &last,
PositionT const &pos, boost::wave::language_support language);
};
#undef BOOST_WAVE_NEW_LEXER_DECL
///////////////////////////////////////////////////////////////////////////////
//
// The slex_input_interface helps to instantiate a concrete lexer to be used
// by the Wave preprocessor module.
// This is done to allow compile time reduction.
//
///////////////////////////////////////////////////////////////////////////////
template <typename TokenT>
struct slex_input_interface
: lex_input_interface<TokenT>
{
typedef typename lex_input_interface<TokenT>::position_type position_type;
~slex_input_interface() {}
// The new_lexer function allows the opaque generation of a new lexer object.
// It is coupled to the token type to allow to distinguish different
// lexer/token configurations at compile time.
template <typename IteratorT>
static lex_input_interface<TokenT> *
new_lexer(IteratorT const &first, IteratorT const &last,
position_type const &pos, boost::wave::language_support language)
{
return new_lexer_gen<IteratorT, position_type>::new_lexer (first, last,
pos, language);
}
};
///////////////////////////////////////////////////////////////////////////////
} // namespace slex
} // namespace cpplexer
} // namespace wave
} // namespace boost
#endif // !defined(SLEX_INTERFACE_HPP_E83F52A4_90AC_4FBE_A9A7_B65F7F94C497_INCLUDED)
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