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133 lines (102 loc) · 4.11 KB
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#if !defined(BOOST_PP_IS_ITERATING)
// Copyright David Abrahams 2002.
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
# ifndef RESULT_DWA2002521_HPP
# define RESULT_DWA2002521_HPP
# include <boost/type.hpp>
# include <boost/python/detail/preprocessor.hpp>
# include <boost/python/detail/type_traits.hpp>
# include <boost/mpl/if.hpp>
# include <boost/preprocessor/comma_if.hpp>
# include <boost/preprocessor/iterate.hpp>
# include <boost/preprocessor/debug/line.hpp>
# include <boost/preprocessor/enum_params.hpp>
# include <boost/preprocessor/repetition/enum_trailing_params.hpp>
namespace boost { namespace python { namespace detail {
// Defines a family of overloaded function which, given x, a function
// pointer, member [function] pointer, or an AdaptableFunction object,
// returns a pointer to type<R>*, where R is the result type of
// invoking the result of bind(x).
//
// In order to work around bugs in deficient compilers, if x might be
// an AdaptableFunction object, you must pass OL as a second argument
// to get this to work portably.
# define BOOST_PP_ITERATION_PARAMS_1 \
(4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/result.hpp>, BOOST_PYTHON_FUNCTION_POINTER))
# include BOOST_PP_ITERATE()
# define BOOST_PP_ITERATION_PARAMS_1 \
(4, (0, BOOST_PYTHON_CV_COUNT - 1, <boost/python/detail/result.hpp>, BOOST_PYTHON_POINTER_TO_MEMBER))
# include BOOST_PP_ITERATE()
template <class R, class T>
boost::type<R>* result(R (T::*), int = 0) { return 0; }
# if (defined(__MWERKS__) && __MWERKS__ < 0x3000)
// This code actually works on all implementations, but why use it when we don't have to?
template <class T>
struct get_result_type
{
typedef boost::type<typename T::result_type> type;
};
struct void_type
{
typedef void type;
};
template <class T>
struct result_result
{
typedef typename mpl::if_c<
is_class<T>::value
, get_result_type<T>
, void_type
>::type t1;
typedef typename t1::type* type;
};
template <class X>
typename result_result<X>::type
result(X const&, short) { return 0; }
# else // Simpler code for more-capable compilers
template <class X>
boost::type<typename X::result_type>*
result(X const&, short = 0) { return 0; }
# endif
}}} // namespace boost::python::detail
# endif // RESULT_DWA2002521_HPP
/* --------------- function pointers --------------- */
// For gcc 4.4 compatability, we must include the
// BOOST_PP_ITERATION_DEPTH test inside an #else clause.
#else // BOOST_PP_IS_ITERATING
#if BOOST_PP_ITERATION_DEPTH() == 1 && BOOST_PP_ITERATION_FLAGS() == BOOST_PYTHON_FUNCTION_POINTER
# if !(BOOST_WORKAROUND(__MWERKS__, > 0x3100) \
&& BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3201)))
# line BOOST_PP_LINE(__LINE__, result.hpp(function pointers))
# endif
# define N BOOST_PP_ITERATION()
template <class R BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class A)>
boost::type<R>* result(R (*)(BOOST_PP_ENUM_PARAMS_Z(1, N, A)), int = 0)
{
return 0;
}
# undef N
/* --------------- pointers-to-members --------------- */
#elif BOOST_PP_ITERATION_DEPTH() == 1 && BOOST_PP_ITERATION_FLAGS() == BOOST_PYTHON_POINTER_TO_MEMBER
// Outer over cv-qualifiers
# define BOOST_PP_ITERATION_PARAMS_2 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/result.hpp>))
# include BOOST_PP_ITERATE()
#elif BOOST_PP_ITERATION_DEPTH() == 2
# if !(BOOST_WORKAROUND(__MWERKS__, > 0x3100) \
&& BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3201)))
# line BOOST_PP_LINE(__LINE__, result.hpp(pointers-to-members))
# endif
// Inner over arities
# define N BOOST_PP_ITERATION()
# define Q BOOST_PYTHON_CV_QUALIFIER(BOOST_PP_RELATIVE_ITERATION(1))
template <class R, class T BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class A)>
boost::type<R>* result(R (T::*)(BOOST_PP_ENUM_PARAMS_Z(1, N, A)) Q, int = 0)
{
return 0;
}
# undef N
# undef Q
#endif // BOOST_PP_ITERATION_DEPTH()
#endif