/Src/Dependencies/Boost/boost/fusion/sequence/intrinsic/back.hpp

http://hadesmem.googlecode.com/ · C++ Header · 42 lines · 30 code · 6 blank · 6 comment · 0 complexity · a67d6a1aaf61523546efde80ef82af0a MD5 · raw file

  1. /*=============================================================================
  2. Copyright (c) 2001-2006 Joel de Guzman
  3. Distributed under the Boost Software License, Version 1.0. (See accompanying
  4. file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  5. ==============================================================================*/
  6. #if !defined(FUSION_BACK_09162005_0350)
  7. #define FUSION_BACK_09162005_0350
  8. #include <boost/fusion/sequence/intrinsic/end.hpp>
  9. #include <boost/fusion/iterator/prior.hpp>
  10. #include <boost/fusion/iterator/deref.hpp>
  11. #include <boost/mpl/bool.hpp>
  12. namespace boost { namespace fusion
  13. {
  14. struct fusion_sequence_tag;
  15. namespace result_of
  16. {
  17. template <typename Sequence>
  18. struct back
  19. : result_of::deref<typename result_of::prior<typename result_of::end<Sequence>::type>::type>
  20. {};
  21. }
  22. template <typename Sequence>
  23. inline typename result_of::back<Sequence>::type
  24. back(Sequence& seq)
  25. {
  26. return *fusion::prior(fusion::end(seq));
  27. }
  28. template <typename Sequence>
  29. inline typename result_of::back<Sequence const>::type
  30. back(Sequence const& seq)
  31. {
  32. return *fusion::prior(fusion::end(seq));
  33. }
  34. }}
  35. #endif