ceph/src/boost/libs/wave/samples/token_statistics/instantiate_xlex_lexer.cpp

   1 /*=============================================================================
   2     Boost.Wave: A Standard compliant C++ preprocessor library
   3
   4     Sample: Explicit instantiation of the xlex_functor generation function
   5
   6     http://www.boost.org/
   7
   8     Copyright (c) 2001-2010 Hartmut Kaiser. Distributed under the Boost
   9     Software License, Version 1.0. (See accompanying file
  10     LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  11 =============================================================================*/
  12
  13 #include <boost/wave.hpp>
  14
  15 #if BOOST_WAVE_SEPARATE_LEXER_INSTANTIATION != 0
  16
  17 #include <string>
  18
  19 #include <boost/wave/token_ids.hpp>
  20
  21 #include <boost/wave/cpplexer/cpp_lex_token.hpp>
  22
  23 ///////////////////////////////////////////////////////////////////////////////
  24 //  The following file needs to be included only once throughout the whole
  25 //  program.
  26 #include "xlex/xlex_lexer.hpp"
  27
  28 ///////////////////////////////////////////////////////////////////////////////
  29 //
  30 //  This instantiates the correct 'new_lexer' function, which generates the
  31 //  C++ lexer used in this sample.
  32 //
  33 //  This is moved into a separate compilation unit to decouple the compilation
  34 //  of the C++ lexer from the compilation of the other modules, which helps to
  35 //  reduce compilation time.
  36 //
  37 //  The template parameter(s) supplied should be identical to the parameters
  38 //  supplied while instantiating the context<> template.
  39 //
  40 ///////////////////////////////////////////////////////////////////////////////
  41
  42 template struct boost::wave::cpplexer::xlex::new_lexer_gen<std::string::iterator>;
  43
  44 #endif // BOOST_WAVE_SEPARATE_LEXER_INSTANTIATION != 0