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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 CALL_DWA2002411_HPP | |
9 | # define CALL_DWA2002411_HPP | |
10 | ||
11 | # include <boost/python/detail/prefix.hpp> | |
12 | ||
13 | # include <boost/type.hpp> | |
14 | ||
15 | # include <boost/python/converter/arg_to_python.hpp> | |
16 | # include <boost/python/converter/return_from_python.hpp> | |
17 | # include <boost/python/detail/preprocessor.hpp> | |
18 | # include <boost/python/detail/void_return.hpp> | |
19 | ||
20 | # include <boost/preprocessor/comma_if.hpp> | |
21 | # include <boost/preprocessor/iterate.hpp> | |
22 | # include <boost/preprocessor/repeat.hpp> | |
23 | # include <boost/preprocessor/debug/line.hpp> | |
24 | # include <boost/preprocessor/repetition/enum_trailing_params.hpp> | |
25 | # include <boost/preprocessor/repetition/enum_binary_params.hpp> | |
26 | ||
27 | namespace boost { namespace python { | |
28 | ||
29 | # define BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET(z, n, _) \ | |
30 | , converter::arg_to_python<A##n>(a##n).get() | |
31 | ||
32 | # define BOOST_PP_ITERATION_PARAMS_1 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/call.hpp>)) | |
33 | # include BOOST_PP_ITERATE() | |
34 | ||
35 | # undef BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET | |
36 | ||
37 | }} // namespace boost::python | |
38 | ||
39 | # endif // CALL_DWA2002411_HPP | |
40 | ||
41 | // For gcc 4.4 compatability, we must include the | |
42 | // BOOST_PP_ITERATION_DEPTH test inside an #else clause. | |
43 | #else // BOOST_PP_IS_ITERATING | |
44 | #if BOOST_PP_ITERATION_DEPTH() == 1 | |
45 | # if !(BOOST_WORKAROUND(__MWERKS__, > 0x3100) \ | |
46 | && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3201))) | |
47 | # line BOOST_PP_LINE(__LINE__, call.hpp) | |
48 | # endif | |
49 | ||
50 | # define N BOOST_PP_ITERATION() | |
51 | ||
52 | template < | |
53 | class R | |
54 | BOOST_PP_ENUM_TRAILING_PARAMS_Z(1, N, class A) | |
55 | > | |
56 | typename detail::returnable<R>::type | |
57 | call(PyObject* callable | |
58 | BOOST_PP_COMMA_IF(N) BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, A, const& a) | |
59 | , boost::type<R>* = 0 | |
60 | ) | |
61 | { | |
62 | PyObject* const result = | |
63 | PyEval_CallFunction( | |
64 | callable | |
65 | , const_cast<char*>("(" BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_FIXED, "O") ")") | |
66 | BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET, nil) | |
67 | ); | |
68 | ||
69 | // This conversion *must not* be done in the same expression as | |
70 | // the call, because, in the special case where the result is a | |
71 | // reference a Python object which was created by converting a C++ | |
72 | // argument for passing to PyEval_CallFunction, its reference | |
73 | // count will be 2 until the end of the full expression containing | |
74 | // the conversion, and that interferes with dangling | |
75 | // pointer/reference detection. | |
76 | converter::return_from_python<R> converter; | |
77 | return converter(result); | |
78 | } | |
79 | ||
80 | # undef N | |
81 | ||
82 | #endif // BOOST_PP_ITERATION_DEPTH() | |
83 | #endif |