74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
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/*=============================================================================
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Boost.Wave: A Standard compliant C++ preprocessor library
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Definition of the abstract lexer interface
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http://www.boost.org/
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Copyright (c) 2001-2012 Hartmut Kaiser. Distributed under the Boost
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Software License, Version 1.0. (See accompanying file
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LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#if !defined(BOOST_CPP_LEX_INTERFACE_HPP_E83F52A4_90AC_4FBE_A9A7_B65F7F94C497_INCLUDED)
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#define BOOST_CPP_LEX_INTERFACE_HPP_E83F52A4_90AC_4FBE_A9A7_B65F7F94C497_INCLUDED
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#include <boost/wave/wave_config.hpp>
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#include <boost/wave/util/file_position.hpp>
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#include <boost/wave/language_support.hpp>
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// this must occur after all of the includes and before any code appears
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#ifdef BOOST_HAS_ABI_HEADERS
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#include BOOST_ABI_PREFIX
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#endif
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// suppress warnings about dependent classes not being exported from the dll
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#ifdef BOOST_MSVC
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#pragma warning(push)
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#pragma warning(disable : 4251 4231 4660)
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#endif
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///////////////////////////////////////////////////////////////////////////////
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namespace boost {
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namespace wave {
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namespace cpplexer {
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///////////////////////////////////////////////////////////////////////////////
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//
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// The lex_input_interface decouples the lex_iterator_shim from the actual
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// lexer. This is done to allow compile time reduction.
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// Thanks to JCAB for having this idea.
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//
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///////////////////////////////////////////////////////////////////////////////
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template <typename TokenT>
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struct lex_input_interface
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{
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typedef typename TokenT::position_type position_type;
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lex_input_interface() {}
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virtual ~lex_input_interface() {}
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virtual TokenT& get(TokenT&) = 0;
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virtual void set_position(position_type const &pos) = 0;
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#if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
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virtual bool has_include_guards(std::string& guard_name) const = 0;
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#endif
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};
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///////////////////////////////////////////////////////////////////////////////
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} // namespace cpplexer
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} // namespace wave
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} // namespace boost
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#ifdef BOOST_MSVC
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#pragma warning(pop)
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#endif
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// the suffix header occurs after all of the code
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#ifdef BOOST_HAS_ABI_HEADERS
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#include BOOST_ABI_SUFFIX
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#endif
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#endif // !defined(BOOST_CPP_LEX_INTERFACE_HPP_E83F52A4_90AC_4FBE_A9A7_B65F7F94C497_INCLUDED)
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