instantiate_cpp_exprgrammar.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 <utility>

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

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

///////////////////////////////////////////////////////////////////////////////
//  
//  Explicit instantiation of the expression_grammar_gen template with the 
//  correct lexer iterator type. This instantiates the corresponding parse 
//  function, which in turn instantiates the expression_grammar object (see 
//  wave/grammars/cpp_expression_grammar.hpp)
//
///////////////////////////////////////////////////////////////////////////////

typedef boost::wave::cpplexer::lex_token<> token_type;

template struct boost::wave::grammars::expression_grammar_gen<token_type>;

#endif // #if BOOST_WAVE_SEPARATE_GRAMMAR_INSTANTIATION != 0