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 RESULT_DWA2002521_HPP
9 # define RESULT_DWA2002521_HPP
10
11 # include <boost/type.hpp>
12
13 # include <boost/python/detail/preprocessor.hpp>
14
15 # include <boost/type_traits/object_traits.hpp>
16 # include <boost/mpl/if.hpp>
17
18 # include <boost/preprocessor/comma_if.hpp>
19 # include <boost/preprocessor/iterate.hpp>
20 # include <boost/preprocessor/debug/line.hpp>
21 # include <boost/preprocessor/enum_params.hpp>
22 # include <boost/preprocessor/repetition/enum_trailing_params.hpp>
23
24 namespace boost { namespace python { namespace detail {
25
26 // Defines a family of overloaded function which, given x, a function
27 // pointer, member [function] pointer, or an AdaptableFunction object,
28 // returns a pointer to type<R>*, where R is the result type of
29 // invoking the result of bind(x).
30 //
31 // In order to work around bugs in deficient compilers, if x might be
32 // an AdaptableFunction object, you must pass OL as a second argument
33 // to get this to work portably.
34
35 # define BOOST_PP_ITERATION_PARAMS_1 \
36 (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/result.hpp>, BOOST_PYTHON_FUNCTION_POINTER))
37 # include BOOST_PP_ITERATE()
38
39 # define BOOST_PP_ITERATION_PARAMS_1 \
40 (4, (0, BOOST_PYTHON_CV_COUNT - 1, <boost/python/detail/result.hpp>, BOOST_PYTHON_POINTER_TO_MEMBER))
41 # include BOOST_PP_ITERATE()
42
43 template <class R, class T>
result(R (T::*),int=0)44 boost::type<R>* result(R (T::*), int = 0) { return 0; }
45
46 # if (defined(__MWERKS__) && __MWERKS__ < 0x3000)
47 // This code actually works on all implementations, but why use it when we don't have to?
48 template <class T>
49 struct get_result_type
50 {
51 typedef boost::type<typename T::result_type> type;
52 };
53
54 struct void_type
55 {
56 typedef void type;
57 };
58
59 template <class T>
60 struct result_result
61 {
62 typedef typename mpl::if_c<
63 is_class<T>::value
64 , get_result_type<T>
65 , void_type
66 >::type t1;
67
68 typedef typename t1::type* type;
69 };
70
71 template <class X>
72 typename result_result<X>::type
result(X const &,short)73 result(X const&, short) { return 0; }
74
75 # else // Simpler code for more-capable compilers
76 template <class X>
77 boost::type<typename X::result_type>*
result(X const &,short=0)78 result(X const&, short = 0) { return 0; }
79
80 # endif
81
82 }}} // namespace boost::python::detail
83
84 # endif // RESULT_DWA2002521_HPP
85
86 /* --------------- function pointers --------------- */
87 // For gcc 4.4 compatability, we must include the
88 // BOOST_PP_ITERATION_DEPTH test inside an #else clause.
89 #else // BOOST_PP_IS_ITERATING
90 #if BOOST_PP_ITERATION_DEPTH() == 1 && BOOST_PP_ITERATION_FLAGS() == BOOST_PYTHON_FUNCTION_POINTER
91 # if !(BOOST_WORKAROUND(__MWERKS__, > 0x3100) \
92 && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3201)))
93 # line BOOST_PP_LINE(__LINE__, result.hpp(function pointers))
94 # endif
95
96 # define N BOOST_PP_ITERATION()
97
98 template <class R BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class A)>
99 boost::type<R>* result(R (*)(BOOST_PP_ENUM_PARAMS_Z(1, N, A)), int = 0)
100 {
101 return 0;
102 }
103
104 # undef N
105
106 /* --------------- pointers-to-members --------------- */
107 #elif BOOST_PP_ITERATION_DEPTH() == 1 && BOOST_PP_ITERATION_FLAGS() == BOOST_PYTHON_POINTER_TO_MEMBER
108 // Outer over cv-qualifiers
109
110 # define BOOST_PP_ITERATION_PARAMS_2 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/result.hpp>))
111 # include BOOST_PP_ITERATE()
112
113 #elif BOOST_PP_ITERATION_DEPTH() == 2
114 # if !(BOOST_WORKAROUND(__MWERKS__, > 0x3100) \
115 && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3201)))
116 # line BOOST_PP_LINE(__LINE__, result.hpp(pointers-to-members))
117 # endif
118 // Inner over arities
119
120 # define N BOOST_PP_ITERATION()
121 # define Q BOOST_PYTHON_CV_QUALIFIER(BOOST_PP_RELATIVE_ITERATION(1))
122
123 template <class R, class T BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class A)>
R(T::*)124 boost::type<R>* result(R (T::*)(BOOST_PP_ENUM_PARAMS_Z(1, N, A)) Q, int = 0)
125 {
126 return 0;
127 }
128
129 # undef N
130 # undef Q
131
132 #endif // BOOST_PP_ITERATION_DEPTH()
133 #endif
134