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 |
84 | |