diff -r 000000000000 -r bde4ae8d615e os/ossrv/ossrv_pub/boost_apis/boost/python/detail/caller.hpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/os/ossrv/ossrv_pub/boost_apis/boost/python/detail/caller.hpp Fri Jun 15 03:10:57 2012 +0200 @@ -0,0 +1,220 @@ +#if !defined(BOOST_PP_IS_ITERATING) + +// Copyright David Abrahams 2002. +// 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 CALLER_DWA20021121_HPP +# define CALLER_DWA20021121_HPP + +# include +# include + +# include +# include +# include + +# include +# include + +# include +# include +# include +# include +# include +# include +# include + +# include + +# include +# include + +# include +# include +# include +# include +# include +# include +# include + +namespace boost { namespace python { namespace detail { + +template +inline PyObject* get(mpl::int_, PyObject* const& args_) +{ + return PyTuple_GET_ITEM(args_,N); +} + +inline unsigned arity(PyObject* const& args_) +{ + return PyTuple_GET_SIZE(args_); +} + +// This "result converter" is really just used as +// a dispatch tag to invoke(...), selecting the appropriate +// implementation +typedef int void_result_to_python; + +// Given a model of CallPolicies and a C++ result type, this +// metafunction selects the appropriate converter to use for +// converting the result to python. +template +struct select_result_converter + : mpl::eval_if< + is_same + , mpl::identity + , mpl::apply1 + > +{ +}; + +template +inline ResultConverter create_result_converter( + ArgPackage const& args_ + , ResultConverter* + , converter::context_result_converter* +) +{ + return ResultConverter(args_); +} + +template +inline ResultConverter create_result_converter( + ArgPackage const& + , ResultConverter* + , ... +) +{ + return ResultConverter(); +} + +template struct caller_arity; + +template +struct caller; + +# define BOOST_PYTHON_NEXT(init,name,n) \ + typedef BOOST_PP_IF(n,typename mpl::next< BOOST_PP_CAT(name,BOOST_PP_DEC(n)) >::type, init) name##n; + +# define BOOST_PYTHON_ARG_CONVERTER(n) \ + BOOST_PYTHON_NEXT(typename mpl::next::type, arg_iter,n) \ + typedef arg_from_python c_t##n; \ + c_t##n c##n(get(mpl::int_(), inner_args)); \ + if (!c##n.convertible()) \ + return 0; + +# define BOOST_PP_ITERATION_PARAMS_1 \ + (3, (0, BOOST_PYTHON_MAX_ARITY + 1, )) +# include BOOST_PP_ITERATE() + +# undef BOOST_PYTHON_ARG_CONVERTER +# undef BOOST_PYTHON_NEXT + +// A metafunction returning the base class used for caller. +template +struct caller_base_select +{ + enum { arity = mpl::size::value - 1 }; + typedef typename caller_arity::template impl type; +}; + +// A function object type which wraps C++ objects as Python callable +// objects. +// +// Template Arguments: +// +// F - +// the C++ `function object' that will be called. Might +// actually be any data for which an appropriate invoke_tag() can +// be generated. invoke(...) takes care of the actual invocation syntax. +// +// CallPolicies - +// The precall, postcall, and what kind of resultconverter to +// generate for mpl::front::type +// +// Sig - +// The `intended signature' of the function. An MPL sequence +// beginning with a result type and continuing with a list of +// argument types. +template +struct caller + : caller_base_select::type +{ + typedef typename caller_base_select< + F,CallPolicies,Sig + >::type base; + + typedef PyObject* result_type; + + caller(F f, CallPolicies p) : base(f,p) {} + +}; + +}}} // namespace boost::python::detail + +# endif // CALLER_DWA20021121_HPP + +#else + +# define N BOOST_PP_ITERATION() + +template <> +struct caller_arity +{ + template + struct impl + { + impl(F f, Policies p) : m_data(f,p) {} + + PyObject* operator()(PyObject* args_, PyObject*) // eliminate + // this + // trailing + // keyword dict + { + typedef typename mpl::begin::type first; + typedef typename first::type result_t; + typedef typename select_result_converter::type result_converter; + typedef typename Policies::argument_package argument_package; + + argument_package inner_args(args_); + +# if N +# define BOOST_PP_LOCAL_MACRO(i) BOOST_PYTHON_ARG_CONVERTER(i) +# define BOOST_PP_LOCAL_LIMITS (0, N-1) +# include BOOST_PP_LOCAL_ITERATE() +# endif + // all converters have been checked. Now we can do the + // precall part of the policy + if (!m_data.second().precall(inner_args)) + return 0; + + PyObject* result = detail::invoke( + detail::invoke_tag() + , create_result_converter(args_, (result_converter*)0, (result_converter*)0) + , m_data.first() + BOOST_PP_ENUM_TRAILING_PARAMS(N, c) + ); + + return m_data.second().postcall(inner_args, result); + } + + static unsigned min_arity() { return N; } + + static signature_element const* signature() + { + return detail::signature::elements(); + } + + private: + compressed_pair m_data; + }; +}; + + + +#endif // BOOST_PP_IS_ITERATING + +