[857] | 1 | #if !defined(BOOST_PP_IS_ITERATING)
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| 2 |
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| 3 | // Copyright David Abrahams 2002.
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| 4 | // Distributed under the Boost Software License, Version 1.0. (See
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| 5 | // accompanying file LICENSE_1_0.txt or copy at
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| 6 | // http://www.boost.org/LICENSE_1_0.txt)
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| 7 |
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| 8 | # ifndef SIGNATURE_DWA20021121_HPP
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| 9 | # define SIGNATURE_DWA20021121_HPP
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| 10 |
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| 11 | # include <boost/python/type_id.hpp>
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| 12 |
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| 13 | # include <boost/python/detail/preprocessor.hpp>
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| 14 | # include <boost/python/detail/indirect_traits.hpp>
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| 15 |
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| 16 | # include <boost/preprocessor/iterate.hpp>
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| 17 | # include <boost/preprocessor/iteration/local.hpp>
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| 18 |
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| 19 | # include <boost/mpl/at.hpp>
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| 20 | # include <boost/mpl/size.hpp>
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| 21 |
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| 22 | namespace boost { namespace python { namespace detail {
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| 23 |
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| 24 | struct signature_element
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| 25 | {
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| 26 | char const* basename;
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| 27 | bool lvalue;
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| 28 | };
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| 29 |
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| 30 | template <unsigned> struct signature_arity;
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| 31 |
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| 32 | # define BOOST_PP_ITERATION_PARAMS_1 \
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| 33 | (3, (0, BOOST_PYTHON_MAX_ARITY + 1, <boost/python/detail/signature.hpp>))
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| 34 | # include BOOST_PP_ITERATE()
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| 35 |
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| 36 | // A metafunction returning the base class used for
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| 37 | //
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| 38 | // signature<class F, class CallPolicies, class Sig>.
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| 39 | //
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| 40 | template <class Sig>
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| 41 | struct signature_base_select
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| 42 | {
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| 43 | enum { arity = mpl::size<Sig>::value - 1 };
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| 44 | typedef typename signature_arity<arity>::template impl<Sig> type;
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| 45 | };
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| 46 |
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| 47 | template <class Sig>
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| 48 | struct signature
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| 49 | : signature_base_select<Sig>::type
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| 50 | {
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| 51 | };
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| 52 |
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| 53 | }}} // namespace boost::python::detail
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| 54 |
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| 55 | # endif // SIGNATURE_DWA20021121_HPP
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| 56 |
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| 57 | #else
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| 58 |
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| 59 | # define N BOOST_PP_ITERATION()
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| 60 |
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| 61 | template <>
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| 62 | struct signature_arity<N>
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| 63 | {
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| 64 | template <class Sig>
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| 65 | struct impl
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| 66 | {
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| 67 | static signature_element const* elements()
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| 68 | {
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| 69 | static signature_element const result[N+2] = {
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| 70 |
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| 71 | # define BOOST_PP_LOCAL_MACRO(i) \
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| 72 | { \
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| 73 | type_id<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>().name() \
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| 74 | , indirect_traits::is_reference_to_non_const<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::value \
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| 75 | },
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| 76 |
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| 77 | # define BOOST_PP_LOCAL_LIMITS (0, N)
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| 78 | # include BOOST_PP_LOCAL_ITERATE()
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| 79 | {0,0}
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| 80 | };
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| 81 | return result;
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| 82 | }
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| 83 | };
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| 84 | };
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| 85 |
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| 86 | #endif // BOOST_PP_IS_ITERATING
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| 87 |
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| 88 |
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