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1 | #if !defined(BOOST_PP_IS_ITERATING) |
2 | ||
3 | // Copyright David Abrahams 2001. | |
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 MAKE_HOLDER_DWA20011215_HPP | |
9 | # define MAKE_HOLDER_DWA20011215_HPP | |
10 | ||
11 | # include <boost/python/detail/prefix.hpp> | |
12 | ||
13 | # include <boost/python/object/instance.hpp> | |
14 | # include <boost/python/converter/registry.hpp> | |
15 | #if !defined( BOOST_PYTHON_NO_PY_SIGNATURES) && defined( BOOST_PYTHON_PY_SIGNATURES_PROPER_INIT_SELF_TYPE) | |
16 | # include <boost/python/detail/python_type.hpp> | |
17 | #endif | |
18 | ||
19 | # include <boost/python/object/forward.hpp> | |
20 | # include <boost/python/detail/preprocessor.hpp> | |
21 | ||
22 | # include <boost/mpl/next.hpp> | |
23 | # include <boost/mpl/begin_end.hpp> | |
24 | # include <boost/mpl/deref.hpp> | |
25 | ||
26 | # include <boost/preprocessor/iterate.hpp> | |
27 | # include <boost/preprocessor/iteration/local.hpp> | |
28 | # include <boost/preprocessor/repeat.hpp> | |
29 | # include <boost/preprocessor/debug/line.hpp> | |
30 | # include <boost/preprocessor/repetition/enum_trailing_binary_params.hpp> | |
31 | ||
32 | # include <cstddef> | |
33 | ||
34 | namespace boost { namespace python { namespace objects { | |
35 | ||
36 | template <int nargs> struct make_holder; | |
37 | ||
38 | # define BOOST_PYTHON_DO_FORWARD_ARG(z, index, _) , f##index(a##index) | |
39 | ||
40 | // specializations... | |
41 | # define BOOST_PP_ITERATION_PARAMS_1 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/make_holder.hpp>)) | |
42 | # include BOOST_PP_ITERATE() | |
43 | ||
44 | # undef BOOST_PYTHON_DO_FORWARD_ARG | |
45 | ||
46 | }}} // namespace boost::python::objects | |
47 | ||
48 | # endif // MAKE_HOLDER_DWA20011215_HPP | |
49 | ||
50 | // For gcc 4.4 compatability, we must include the | |
51 | // BOOST_PP_ITERATION_DEPTH test inside an #else clause. | |
52 | #else // BOOST_PP_IS_ITERATING | |
53 | #if BOOST_PP_ITERATION_DEPTH() == 1 | |
54 | # if !(BOOST_WORKAROUND(__MWERKS__, > 0x3100) \ | |
55 | && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3201))) | |
56 | # line BOOST_PP_LINE(__LINE__, make_holder.hpp) | |
57 | # endif | |
58 | ||
59 | # define N BOOST_PP_ITERATION() | |
60 | ||
61 | template <> | |
62 | struct make_holder<N> | |
63 | { | |
64 | template <class Holder, class ArgList> | |
65 | struct apply | |
66 | { | |
67 | # if N | |
68 | // Unrolled iteration through each argument type in ArgList, | |
69 | // choosing the type that will be forwarded on to the holder's | |
70 | // templated constructor. | |
71 | typedef typename mpl::begin<ArgList>::type iter0; | |
72 | ||
73 | # define BOOST_PP_LOCAL_MACRO(n) \ | |
74 | typedef typename mpl::deref<iter##n>::type t##n; \ | |
75 | typedef typename forward<t##n>::type f##n; \ | |
76 | typedef typename mpl::next<iter##n>::type \ | |
77 | BOOST_PP_CAT(iter,BOOST_PP_INC(n)); // Next iterator type | |
78 | ||
79 | # define BOOST_PP_LOCAL_LIMITS (0, N-1) | |
80 | # include BOOST_PP_LOCAL_ITERATE() | |
81 | # endif | |
82 | ||
83 | static void execute( | |
84 | #if !defined( BOOST_PYTHON_NO_PY_SIGNATURES) && defined( BOOST_PYTHON_PY_SIGNATURES_PROPER_INIT_SELF_TYPE) | |
85 | boost::python::detail::python_class<BOOST_DEDUCED_TYPENAME Holder::value_type> *p | |
86 | #else | |
87 | PyObject *p | |
88 | #endif | |
89 | BOOST_PP_ENUM_TRAILING_BINARY_PARAMS_Z(1, N, t, a)) | |
90 | { | |
91 | typedef instance<Holder> instance_t; | |
92 | ||
93 | void* memory = Holder::allocate(p, offsetof(instance_t, storage), sizeof(Holder)); | |
94 | try { | |
95 | (new (memory) Holder( | |
96 | p BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_DO_FORWARD_ARG, nil)))->install(p); | |
97 | } | |
98 | catch(...) { | |
99 | Holder::deallocate(p, memory); | |
100 | throw; | |
101 | } | |
102 | } | |
103 | }; | |
104 | }; | |
105 | ||
106 | # undef N | |
107 | ||
108 | #endif // BOOST_PP_ITERATION_DEPTH() | |
109 | #endif |