[857] | 1 | #ifndef BOOST_PP_IS_ITERATING
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| 2 | // Copyright David Abrahams 2002.
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| 3 | // Distributed under the Boost Software License, Version 1.0. (See
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| 4 | // accompanying file LICENSE_1_0.txt or copy at
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| 5 | // http://www.boost.org/LICENSE_1_0.txt)
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| 6 | # ifndef TYPE_LIST_IMPL_NO_PTS_DWA2002913_HPP
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| 7 | # define TYPE_LIST_IMPL_NO_PTS_DWA2002913_HPP
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| 8 |
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| 9 | # include <boost/python/detail/type_list.hpp>
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| 10 |
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| 11 | # include <boost/preprocessor/enum_params.hpp>
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| 12 | # include <boost/preprocessor/enum_params_with_a_default.hpp>
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| 13 | # include <boost/preprocessor/cat.hpp>
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| 14 | # include <boost/preprocessor/repeat.hpp>
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| 15 | # include <boost/preprocessor/empty.hpp>
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| 16 | # include <boost/preprocessor/iterate.hpp>
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| 17 | # include <boost/mpl/void.hpp>
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| 18 |
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| 19 | namespace boost { namespace python { namespace detail {
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| 20 |
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| 21 | template< typename T >
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| 22 | struct is_list_arg
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| 23 | {
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| 24 | enum { value = true };
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| 25 | };
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| 26 |
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| 27 | template<>
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| 28 | struct is_list_arg<mpl::void_>
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| 29 | {
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| 30 | enum { value = false };
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| 31 | };
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| 32 |
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| 33 | template<int> struct type_list_impl_chooser;
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| 34 |
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| 35 | # define BOOST_PYTHON_LIST_ACTUAL_PARAMS BOOST_PP_ENUM_PARAMS_Z(1,BOOST_PYTHON_LIST_SIZE,T)
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| 36 | # define BOOST_PYTHON_LIST_FORMAL_PARAMS BOOST_PP_ENUM_PARAMS_Z(1,BOOST_PYTHON_LIST_SIZE,class T)
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| 37 |
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| 38 | # define BOOST_PP_ITERATION_PARAMS_1 \
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| 39 | (3, (0, BOOST_PYTHON_LIST_SIZE, <boost/python/detail/type_list_impl_no_pts.hpp>))
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| 40 | # include BOOST_PP_ITERATE()
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| 41 |
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| 42 | # define BOOST_PYTHON_PLUS() +
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| 43 | # define BOOST_PYTHON_IS_LIST_ARG(z, n, data) \
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| 44 | BOOST_PP_IF(n, BOOST_PYTHON_PLUS, BOOST_PP_EMPTY)() \
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| 45 | is_list_arg< BOOST_PP_CAT(T,n) >::value
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| 46 |
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| 47 | template<
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| 48 | BOOST_PYTHON_LIST_FORMAL_PARAMS
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| 49 | >
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| 50 | struct type_list_count_args
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| 51 | {
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| 52 | enum { value =
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| 53 | BOOST_PP_REPEAT_1(BOOST_PYTHON_LIST_SIZE, BOOST_PYTHON_IS_LIST_ARG, _)
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| 54 | };
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| 55 | };
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| 56 |
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| 57 | template<
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| 58 | BOOST_PYTHON_LIST_FORMAL_PARAMS
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| 59 | >
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| 60 | struct type_list_impl
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| 61 | {
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| 62 | typedef type_list_count_args< BOOST_PYTHON_LIST_ACTUAL_PARAMS > arg_num_;
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| 63 | typedef typename detail::type_list_impl_chooser< arg_num_::value >
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| 64 | ::template result_< BOOST_PYTHON_LIST_ACTUAL_PARAMS >::type type;
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| 65 | };
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| 66 |
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| 67 | template<
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| 68 | BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(BOOST_PYTHON_LIST_SIZE, class T, mpl::void_)
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| 69 | >
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| 70 | struct type_list
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| 71 | : detail::type_list_impl< BOOST_PYTHON_LIST_ACTUAL_PARAMS >::type
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| 72 | {
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| 73 | typedef typename detail::type_list_impl<
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| 74 | BOOST_PYTHON_LIST_ACTUAL_PARAMS
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| 75 | >::type type;
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| 76 | };
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| 77 |
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| 78 | # undef BOOST_PYTHON_IS_LIST_ARG
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| 79 | # undef BOOST_PYTHON_PLUS
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| 80 | # undef BOOST_PYTHON_LIST_FORMAL_PARAMS
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| 81 | # undef BOOST_PYTHON_LIST_ACTUAL_PARAMS
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| 82 |
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| 83 | }}} // namespace boost::python::detail
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| 84 |
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| 85 | # endif // TYPE_LIST_IMPL_NO_PTS_DWA2002913_HPP
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| 86 |
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| 87 | #else // BOOST_PP_IS_ITERATING
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| 88 |
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| 89 | # define N BOOST_PP_ITERATION()
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| 90 |
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| 91 | template<>
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| 92 | struct type_list_impl_chooser<N>
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| 93 | {
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| 94 | template<
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| 95 | BOOST_PYTHON_LIST_FORMAL_PARAMS
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| 96 | >
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| 97 | struct result_
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| 98 | {
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| 99 | typedef typename BOOST_PP_CAT(mpl::vector,N)<
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| 100 | BOOST_PP_ENUM_PARAMS(N, T)
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| 101 | >::type type;
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| 102 | };
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| 103 | };
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| 104 |
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| 105 | # undef N
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| 106 |
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| 107 | #endif // BOOST_PP_IS_ITERATING
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