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107 lines
3.2 KiB
C++
107 lines
3.2 KiB
C++
#if !defined(BOOST_PP_IS_ITERATING)
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// Copyright David Abrahams 2002.
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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# ifndef SIGNATURE_DWA20021121_HPP
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# define SIGNATURE_DWA20021121_HPP
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# include <boost/python/type_id.hpp>
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# include <boost/python/detail/preprocessor.hpp>
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# include <boost/python/detail/indirect_traits.hpp>
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# include <boost/python/converter/pytype_function.hpp>
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# include <boost/preprocessor/iterate.hpp>
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# include <boost/preprocessor/iteration/local.hpp>
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# include <boost/mpl/at.hpp>
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# include <boost/mpl/size.hpp>
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namespace boost { namespace python { namespace detail {
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struct signature_element
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{
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char const* basename;
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converter::pytype_function pytype_f;
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bool lvalue;
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};
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struct py_func_sig_info
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{
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signature_element const *signature;
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signature_element const *ret;
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};
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template <unsigned> struct signature_arity;
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# define BOOST_PP_ITERATION_PARAMS_1 \
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(3, (0, BOOST_PYTHON_MAX_ARITY + 1, <boost/python/detail/signature.hpp>))
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# include BOOST_PP_ITERATE()
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// A metafunction returning the base class used for
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//
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// signature<class F, class CallPolicies, class Sig>.
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//
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template <class Sig>
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struct signature_base_select
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{
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enum { arity = mpl::size<Sig>::value - 1 };
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typedef typename signature_arity<arity>::template impl<Sig> type;
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};
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template <class Sig>
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struct signature
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: signature_base_select<Sig>::type
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{
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};
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}}} // namespace boost::python::detail
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# endif // SIGNATURE_DWA20021121_HPP
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#else
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# define N BOOST_PP_ITERATION()
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template <>
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struct signature_arity<N>
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{
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template <class Sig>
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struct impl
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{
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static signature_element const* elements()
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{
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static signature_element const result[N+2] = {
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#ifndef BOOST_PYTHON_NO_PY_SIGNATURES
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# define BOOST_PP_LOCAL_MACRO(i) \
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{ \
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type_id<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>().name() \
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, &converter::expected_pytype_for_arg<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::get_pytype \
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, indirect_traits::is_reference_to_non_const<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::value \
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},
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#else
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# define BOOST_PP_LOCAL_MACRO(i) \
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{ \
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type_id<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>().name() \
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, 0 \
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, indirect_traits::is_reference_to_non_const<BOOST_DEDUCED_TYPENAME mpl::at_c<Sig,i>::type>::value \
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},
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#endif
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# define BOOST_PP_LOCAL_LIMITS (0, N)
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# include BOOST_PP_LOCAL_ITERATE()
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{0,0,0}
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};
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return result;
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}
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};
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};
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#endif // BOOST_PP_IS_ITERATING
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