1 #if !defined(BOOST_PP_IS_ITERATING) 2 3 // Copyright David Abrahams 2002. 4 // Distributed under the Boost Software License, Version 1.0. (See 5 // accompanying file LICENSE_1_0.txt or copy at 6 // http://www.boost.org/LICENSE_1_0.txt) 7 8 # ifndef SIGNATURE_DWA20021121_HPP 9 # define SIGNATURE_DWA20021121_HPP 10 11 # include <boost/python/type_id.hpp> 12 13 # include <boost/python/detail/preprocessor.hpp> 14 # include <boost/python/detail/indirect_traits.hpp> 15 # include <boost/python/converter/pytype_function.hpp> 16 17 # include <boost/preprocessor/iterate.hpp> 18 # include <boost/preprocessor/iteration/local.hpp> 19 20 # include <boost/mpl/at.hpp> 21 # include <boost/mpl/size.hpp> 22 23 namespace boost { namespace python { namespace detail { 24 25 struct signature_element 26 { 27 char const* basename; 28 converter::pytype_function pytype_f; 29 bool lvalue; 30 }; 31 32 struct py_func_sig_info 33 { 34 signature_element const *signature; 35 signature_element const *ret; 36 }; 37 38 template <unsigned> struct signature_arity; 39 40 # define BOOST_PP_ITERATION_PARAMS_1 \ 41 (3, (0, BOOST_PYTHON_MAX_ARITY + 1, <boost/python/detail/signature.hpp>)) 42 # include BOOST_PP_ITERATE() 43 44 // A metafunction returning the base class used for 45 // 46 // signature<class F, class CallPolicies, class Sig>. 47 // 48 template <class Sig> 49 struct signature_base_select 50 { 51 enum { arity = mpl::size<Sig>::value - 1 }; 52 typedef typename signature_arity<arity>::template impl<Sig> type; 53 }; 54 55 template <class Sig> 56 struct signature 57 : signature_base_select<Sig>::type 58 { 59 }; 60 61 }}} // namespace boost::python::detail 62 63 # endif // SIGNATURE_DWA20021121_HPP 64 65 #else 66 67 # define N BOOST_PP_ITERATION() 68 69 template <> 70 struct signature_arity<N> 71 { 72 template <class Sig> 73 struct impl 74 { elementssignature_arity::impl75 static signature_element const* elements() 76 { 77 static signature_element const result[N+2] = { 78 79 #ifndef BOOST_PYTHON_NO_PY_SIGNATURES 80 # define BOOST_PP_LOCAL_MACRO(i) \ 81 { \ 82 type_id<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>().name() \ 83 , &converter::expected_pytype_for_arg<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::get_pytype \ 84 , indirect_traits::is_reference_to_non_const<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::value \ 85 }, 86 #else 87 # define BOOST_PP_LOCAL_MACRO(i) \ 88 { \ 89 type_id<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>().name() \ 90 , 0 \ 91 , indirect_traits::is_reference_to_non_const<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::value \ 92 }, 93 #endif 94 95 # define BOOST_PP_LOCAL_LIMITS (0, N) 96 # include BOOST_PP_LOCAL_ITERATE() 97 {0,0,0} 98 }; 99 return result; 100 } 101 }; 102 }; 103 104 #endif // BOOST_PP_IS_ITERATING 105 106 107