/Src/Dependencies/Boost/boost/xpressive/detail/static/transforms/as_matcher.hpp

http://hadesmem.googlecode.com/ · C++ Header · 48 lines · 33 code · 8 blank · 7 comment · 1 complexity · 4f68aacf84b58e13a808982d8a9aba92 MD5 · raw file

  1. ///////////////////////////////////////////////////////////////////////////////
  2. // as_matcher.hpp
  3. //
  4. // Copyright 2008 Eric Niebler. Distributed under the Boost
  5. // Software License, Version 1.0. (See accompanying file
  6. // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  7. #ifndef BOOST_XPRESSIVE_DETAIL_STATIC_TRANSFORMS_AS_MATCHER_HPP_EAN_04_01_2007
  8. #define BOOST_XPRESSIVE_DETAIL_STATIC_TRANSFORMS_AS_MATCHER_HPP_EAN_04_01_2007
  9. // MS compatible compilers support #pragma once
  10. #if defined(_MSC_VER) && (_MSC_VER >= 1020)
  11. # pragma once
  12. #endif
  13. #include <boost/mpl/assert.hpp>
  14. #include <boost/xpressive/detail/detail_fwd.hpp>
  15. #include <boost/xpressive/detail/static/static.hpp>
  16. namespace boost { namespace xpressive { namespace grammar_detail
  17. {
  18. struct as_matcher : proto::transform<as_matcher>
  19. {
  20. template<typename Expr, typename State, typename Data>
  21. struct impl : proto::transform_impl<Expr, State, Data>
  22. {
  23. typedef typename impl::data data_type;
  24. typedef
  25. typename data_type::template apply<
  26. typename proto::result_of::value<typename impl::expr>::type
  27. >::type
  28. result_type;
  29. result_type operator ()(
  30. typename impl::expr_param expr
  31. , typename impl::state_param
  32. , typename impl::data_param data
  33. ) const
  34. {
  35. return data.call(proto::value(expr));
  36. }
  37. };
  38. };
  39. }}}
  40. #endif