type_list_impl.hpp 1.8 KB

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  1. #ifndef BOOST_PP_IS_ITERATING
  2. // Copyright David Abrahams 2002.
  3. // Distributed under the Boost Software License, Version 1.0. (See
  4. // accompanying file LICENSE_1_0.txt or copy at
  5. // http://www.boost.org/LICENSE_1_0.txt)
  6. # ifndef TYPE_LIST_IMPL_DWA2002913_HPP
  7. # define TYPE_LIST_IMPL_DWA2002913_HPP
  8. # include <boost/python/detail/type_list.hpp>
  9. # include <boost/preprocessor/enum_params.hpp>
  10. # include <boost/preprocessor/enum_params_with_a_default.hpp>
  11. # include <boost/preprocessor/repetition/enum.hpp>
  12. # include <boost/preprocessor/comma_if.hpp>
  13. # include <boost/preprocessor/arithmetic/sub.hpp>
  14. # include <boost/preprocessor/iterate.hpp>
  15. # include <boost/preprocessor/repetition/enum_trailing.hpp>
  16. namespace boost { namespace python { namespace detail {
  17. template <BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(BOOST_PYTHON_LIST_SIZE, class T, mpl::void_)>
  18. struct type_list
  19. : BOOST_PP_CAT(mpl::vector,BOOST_PYTHON_LIST_SIZE)<BOOST_PP_ENUM_PARAMS_Z(1, BOOST_PYTHON_LIST_SIZE, T)>
  20. {
  21. };
  22. # define BOOST_PP_ITERATION_PARAMS_1 \
  23. (3, (0, BOOST_PP_DEC(BOOST_PYTHON_LIST_SIZE), <boost/python/detail/type_list_impl.hpp>))
  24. # include BOOST_PP_ITERATE()
  25. }}} // namespace boost::python::detail
  26. # endif // TYPE_LIST_IMPL_DWA2002913_HPP
  27. #else // BOOST_PP_IS_ITERATING
  28. # define N BOOST_PP_ITERATION()
  29. # define BOOST_PYTHON_VOID_ARGS BOOST_PP_SUB_D(1,BOOST_PYTHON_LIST_SIZE,N)
  30. template <
  31. BOOST_PP_ENUM_PARAMS_Z(1, N, class T)
  32. >
  33. struct type_list<
  34. BOOST_PP_ENUM_PARAMS_Z(1, N, T)
  35. BOOST_PP_COMMA_IF(N)
  36. BOOST_PP_ENUM(
  37. BOOST_PYTHON_VOID_ARGS, BOOST_PYTHON_FIXED, mpl::void_)
  38. >
  39. : BOOST_PP_CAT(mpl::vector,N)<BOOST_PP_ENUM_PARAMS_Z(1, N, T)>
  40. {
  41. };
  42. # undef BOOST_PYTHON_VOID_ARGS
  43. # undef N
  44. #endif // BOOST_PP_IS_ITERATING