| /////////////////////////////////////////////////////////////////////////////// |
| // |
| // Copyright David Abrahams 2002, Joel de Guzman, 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) |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| #if !defined(BOOST_PP_IS_ITERATING) |
| |
| # ifndef SIGNATURE_JDG20020813_HPP |
| # define SIGNATURE_JDG20020813_HPP |
| |
| # include <boost/python/detail/prefix.hpp> |
| |
| # include <boost/mpl/if.hpp> |
| # include <boost/type_traits/is_convertible.hpp> |
| |
| # include <boost/python/detail/preprocessor.hpp> |
| # include <boost/preprocessor/repeat.hpp> |
| # include <boost/preprocessor/enum.hpp> |
| # include <boost/preprocessor/enum_params.hpp> |
| # include <boost/preprocessor/empty.hpp> |
| # include <boost/preprocessor/arithmetic/sub.hpp> |
| # include <boost/preprocessor/iterate.hpp> |
| # include <boost/python/detail/type_list.hpp> |
| |
| # include <boost/preprocessor/debug/line.hpp> |
| # include <boost/preprocessor/arithmetic/sub.hpp> |
| # include <boost/preprocessor/arithmetic/inc.hpp> |
| # include <boost/preprocessor/repetition/enum_trailing_params.hpp> |
| |
| # define BOOST_PYTHON_LIST_INC(n) \ |
| BOOST_PP_CAT(mpl::vector, BOOST_PP_INC(n)) |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| namespace boost { namespace python { namespace detail { |
| |
| // A metafunction returning C1 if C1 is derived from C2, and C2 |
| // otherwise |
| template <class C1, class C2> |
| struct most_derived |
| { |
| typedef typename mpl::if_< |
| is_convertible<C1*,C2*> |
| , C1 |
| , C2 |
| >::type type; |
| }; |
| |
| // The following macros generate expansions for:: |
| // |
| // template <class RT, class T0... class TN> |
| // inline mpl::vector<RT, T0...TN> |
| // get_signature(RT(BOOST_PYTHON_FN_CC *)(T0...TN), void* = 0) |
| // { |
| // return mpl::list<RT, T0...TN>(); |
| // } |
| // |
| // where BOOST_PYTHON_FN_CC is a calling convention keyword, can be |
| // |
| // empty, for default calling convention |
| // __cdecl (if BOOST_PYTHON_ENABLE_CDECL is defined) |
| // __stdcall (if BOOST_PYTHON_ENABLE_STDCALL is defined) |
| // __fastcall (if BOOST_PYTHON_ENABLE_FASTCALL is defined) |
| // |
| // And, for an appropriate assortment of cv-qualifications:: |
| // |
| // template <class RT, class ClassT, class T0... class TN> |
| // inline mpl::vector<RT, ClassT&, T0...TN> |
| // get_signature(RT(BOOST_PYTHON_FN_CC ClassT::*)(T0...TN) cv)) |
| // { |
| // return mpl::list<RT, ClassT&, T0...TN>(); |
| // } |
| // |
| // template <class Target, class RT, class ClassT, class T0... class TN> |
| // inline mpl::vector< |
| // RT |
| // , typename most_derived<Target, ClassT>::type& |
| // , T0...TN |
| // > |
| // get_signature(RT(BOOST_PYTHON_FN_CC ClassT::*)(T0...TN) cv), Target*) |
| // { |
| // return mpl::list<RT, ClassT&, T0...TN>(); |
| // } |
| // |
| // There are two forms for invoking get_signature:: |
| // |
| // get_signature(f) |
| // |
| // and :: |
| // |
| // get_signature(f,(Target*)0) |
| // |
| // These functions extract the return type, class (for member |
| // functions) and arguments of the input signature and stuff them in |
| // an mpl type sequence (the calling convention is dropped). |
| // Note that cv-qualification is dropped from |
| // the "hidden this" argument of member functions; that is a |
| // necessary sacrifice to ensure that an lvalue from_python converter |
| // is used. A pointer is not used so that None will be rejected for |
| // overload resolution. |
| // |
| // The second form of get_signature essentially downcasts the "hidden |
| // this" argument of member functions to Target, because the function |
| // may actually be a member of a base class which is not wrapped, and |
| // in that case conversion from python would fail. |
| // |
| // @group { |
| |
| // 'default' calling convention |
| |
| # define BOOST_PYTHON_FN_CC |
| |
| # define BOOST_PP_ITERATION_PARAMS_1 \ |
| (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/signature.hpp>)) |
| |
| # include BOOST_PP_ITERATE() |
| |
| # undef BOOST_PYTHON_FN_CC |
| |
| // __cdecl calling convention |
| |
| # if defined(BOOST_PYTHON_ENABLE_CDECL) |
| |
| # define BOOST_PYTHON_FN_CC __cdecl |
| # define BOOST_PYTHON_FN_CC_IS_CDECL |
| |
| # define BOOST_PP_ITERATION_PARAMS_1 \ |
| (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/signature.hpp>)) |
| |
| # include BOOST_PP_ITERATE() |
| |
| # undef BOOST_PYTHON_FN_CC |
| # undef BOOST_PYTHON_FN_CC_IS_CDECL |
| |
| # endif // defined(BOOST_PYTHON_ENABLE_CDECL) |
| |
| // __stdcall calling convention |
| |
| # if defined(BOOST_PYTHON_ENABLE_STDCALL) |
| |
| # define BOOST_PYTHON_FN_CC __stdcall |
| |
| # define BOOST_PP_ITERATION_PARAMS_1 \ |
| (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/signature.hpp>)) |
| |
| # include BOOST_PP_ITERATE() |
| |
| # undef BOOST_PYTHON_FN_CC |
| |
| # endif // defined(BOOST_PYTHON_ENABLE_STDCALL) |
| |
| // __fastcall calling convention |
| |
| # if defined(BOOST_PYTHON_ENABLE_FASTCALL) |
| |
| # define BOOST_PYTHON_FN_CC __fastcall |
| |
| # define BOOST_PP_ITERATION_PARAMS_1 \ |
| (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/signature.hpp>)) |
| |
| # include BOOST_PP_ITERATE() |
| |
| # undef BOOST_PYTHON_FN_CC |
| |
| # endif // defined(BOOST_PYTHON_ENABLE_FASTCALL) |
| |
| # undef BOOST_PYTHON_LIST_INC |
| |
| // } |
| |
| }}} // namespace boost::python::detail |
| |
| |
| # endif // SIGNATURE_JDG20020813_HPP |
| |
| // 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 // defined(BOOST_PP_IS_ITERATING) |
| |
| # define N BOOST_PP_ITERATION() |
| |
| // as 'get_signature(RT(*)(T0...TN), void* = 0)' is the same |
| // function as 'get_signature(RT(__cdecl *)(T0...TN), void* = 0)', |
| // we don't define it twice |
| # if !defined(BOOST_PYTHON_FN_CC_IS_CDECL) |
| |
| template < |
| class RT BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class T)> |
| inline BOOST_PYTHON_LIST_INC(N)< |
| RT BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, T)> |
| get_signature(RT(BOOST_PYTHON_FN_CC *)(BOOST_PP_ENUM_PARAMS_Z(1, N, T)), void* = 0) |
| { |
| return BOOST_PYTHON_LIST_INC(N)< |
| RT BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, T) |
| >(); |
| } |
| |
| # endif // !defined(BOOST_PYTHON_FN_CC_IS_CDECL) |
| |
| # undef N |
| |
| # define BOOST_PP_ITERATION_PARAMS_2 \ |
| (3, (0, 3, <boost/python/signature.hpp>)) |
| # include BOOST_PP_ITERATE() |
| |
| #else |
| |
| # define N BOOST_PP_RELATIVE_ITERATION(1) |
| # define Q BOOST_PYTHON_CV_QUALIFIER(BOOST_PP_ITERATION()) |
| |
| template < |
| class RT, class ClassT BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class T)> |
| inline BOOST_PYTHON_LIST_INC(BOOST_PP_INC(N))< |
| RT, ClassT& BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, T)> |
| get_signature(RT(BOOST_PYTHON_FN_CC ClassT::*)(BOOST_PP_ENUM_PARAMS_Z(1, N, T)) Q) |
| { |
| return BOOST_PYTHON_LIST_INC(BOOST_PP_INC(N))< |
| RT, ClassT& BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, T) |
| >(); |
| } |
| |
| template < |
| class Target |
| , class RT |
| , class ClassT |
| BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class T) |
| > |
| inline BOOST_PYTHON_LIST_INC(BOOST_PP_INC(N))< |
| RT |
| , typename most_derived<Target, ClassT>::type& |
| BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, T) |
| > |
| get_signature( |
| RT(BOOST_PYTHON_FN_CC ClassT::*)(BOOST_PP_ENUM_PARAMS_Z(1, N, T)) Q |
| , Target* |
| ) |
| { |
| return BOOST_PYTHON_LIST_INC(BOOST_PP_INC(N))< |
| RT |
| , BOOST_DEDUCED_TYPENAME most_derived<Target, ClassT>::type& |
| BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, T) |
| >(); |
| } |
| |
| # undef Q |
| # undef N |
| |
| #endif // BOOST_PP_ITERATION_DEPTH() |
| #endif // !defined(BOOST_PP_IS_ITERATING) |