instantiate_predef_macros.cpp

C++的一个好库。。。现在很流行

/*=============================================================================
    Boost.Wave: A Standard compliant C++ preprocessor library
    http://www.boost.org/

    Copyright (c) 2001-2005 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)
=============================================================================*/

#include <boost/wave/wave_config.hpp>

#if BOOST_WAVE_SEPARATE_GRAMMAR_INSTANTIATION != 0

#include <string>

#include <boost/wave/cpplexer/cpp_lex_token.hpp>
#include <boost/wave/cpplexer/cpp_lex_iterator.hpp>

#include <boost/wave/grammars/cpp_predef_macros_grammar.hpp>

///////////////////////////////////////////////////////////////////////////////
//  
//  Explicit instantiation of the predefined_macros_grammar_gen template 
//  with the correct token type. This instantiates the corresponding pt_parse 
//  function, which in turn instantiates the cpp_predefined_macros_grammar 
//  object (see wave/grammars/cpp_predef_macros_grammar.hpp)
//
///////////////////////////////////////////////////////////////////////////////

typedef boost::wave::cpplexer::lex_iterator<
        boost::wave::cpplexer::lex_token<> >
    lexer_type;
template struct boost::wave::grammars::predefined_macros_grammar_gen<lexer_type>;

#endif // #if BOOST_WAVE_SEPARATE_GRAMMAR_INSTANTIATION != 0