ceph/src/boost/libs/wave/include/boost/wave/cpplexer/cpp_lex_interface.hpp

   1 /*=============================================================================
   2     Boost.Wave: A Standard compliant C++ preprocessor library
   3
   4     Definition of the abstract lexer interface
   5
   6     http://www.boost.org/
   7
   8     Copyright (c) 2001-2012 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 #if !defined(CPP_LEX_INTERFACE_HPP_E83F52A4_90AC_4FBE_A9A7_B65F7F94C497_INCLUDED)
  14 #define CPP_LEX_INTERFACE_HPP_E83F52A4_90AC_4FBE_A9A7_B65F7F94C497_INCLUDED
  15
  16 #include <boost/wave/wave_config.hpp>
  17 #include <boost/wave/util/file_position.hpp>
  18 #include <boost/wave/language_support.hpp>
  19
  20 // this must occur after all of the includes and before any code appears
  21 #ifdef BOOST_HAS_ABI_HEADERS
  22 #include BOOST_ABI_PREFIX
  23 #endif
  24
  25 // suppress warnings about dependent classes not being exported from the dll
  26 #ifdef BOOST_MSVC
  27 #pragma warning(push)
  28 #pragma warning(disable : 4251 4231 4660)
  29 #endif
  30
  31 ///////////////////////////////////////////////////////////////////////////////
  32 namespace boost {
  33 namespace wave {
  34 namespace cpplexer {
  35
  36 ///////////////////////////////////////////////////////////////////////////////
  37 //
  38 //  The lex_input_interface decouples the lex_iterator_shim from the actual
  39 //  lexer. This is done to allow compile time reduction.
  40 //  Thanks to JCAB for having this idea.
  41 //
  42 ///////////////////////////////////////////////////////////////////////////////
  43
  44 template <typename TokenT>
  45 struct lex_input_interface
  46 {
  47     typedef typename TokenT::position_type position_type;
  48
  49     lex_input_interface() {}
  50     virtual ~lex_input_interface() {}
  51
  52     virtual TokenT& get(TokenT&) = 0;
  53     virtual void set_position(position_type const &pos) = 0;
  54 #if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
  55     virtual bool has_include_guards(std::string& guard_name) const = 0;
  56 #endif
  57 };
  58
  59 ///////////////////////////////////////////////////////////////////////////////
  60 }   // namespace cpplexer
  61 }   // namespace wave
  62 }   // namespace boost
  63
  64 #ifdef BOOST_MSVC
  65 #pragma warning(pop)
  66 #endif
  67
  68 // the suffix header occurs after all of the code
  69 #ifdef BOOST_HAS_ABI_HEADERS
  70 #include BOOST_ABI_SUFFIX
  71 #endif
  72
  73 #endif // !defined(CPP_LEX_INTERFACE_HPP_E83F52A4_90AC_4FBE_A9A7_B65F7F94C497_INCLUDED)