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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\python\return_arg.hpp
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// Copyright David Abrahams and Nikolay Mladenov 2003. // 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) #ifndef RETURN_ARG_DWA2003719_HPP # define RETURN_ARG_DWA2003719_HPP # include
# include
# include
#ifndef BOOST_PYTHON_NO_PY_SIGNATURES # include
#endif # include
# include
# include
# include
# include
# include
# include
namespace boost { namespace python { namespace detail { template
struct return_arg_pos_argument_must_be_positive # if defined(__GNUC__) && __GNUC__ >= 3 || defined(__EDG__) {} # endif ; struct return_none { template
struct apply { struct type { static bool convertible() { return true; } PyObject *operator()( typename value_arg
::type ) const { return none(); } #ifndef BOOST_PYTHON_NO_PY_SIGNATURES PyTypeObject const *get_pytype() const { return converter::expected_pytype_for_arg
::get_pytype() ; } #endif }; }; }; } template < std::size_t arg_pos=1 , class Base = default_call_policies > struct return_arg : Base { private: BOOST_STATIC_CONSTANT(bool, legal = arg_pos > 0); public: typedef typename mpl::if_c< legal , detail::return_none , detail::return_arg_pos_argument_must_be_positive
// we could default to the base result_converter in case or // arg_pos==0 since return arg 0 means return result, but I // think it is better to issue an error instead, cause it can // lead to confusions >::type result_converter; template
static PyObject* postcall(ArgumentPackage const& args, PyObject* result) { // In case of arg_pos == 0 we could simply return Base::postcall, // but this is redundant BOOST_STATIC_ASSERT(arg_pos > 0); result = Base::postcall(args,result); if (!result) return 0; Py_DECREF(result); return incref( detail::get(mpl::int_
(),args) ); } template
struct extract_return_type : mpl::at_c
{ }; }; template < class Base = default_call_policies > struct return_self : return_arg<1,Base> {}; }} // namespace boost::python #endif // RETURN_ARG_DWA2003719_HPP
return_arg.hpp
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