/////////////////////////////////////////////////////////////////////////////// | |
// | |
// 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) |