comparison DEPENDENCIES/generic/include/boost/python/detail/caller.hpp @ 16:2665513ce2d3

Add boost headers

+#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 <boost/python/type_id.hpp>
+#  include <boost/python/handle.hpp>
+
+#  include <boost/detail/indirect_traits.hpp>
+
+#  include <boost/python/detail/invoke.hpp>
+#  include <boost/python/detail/signature.hpp>
+#  include <boost/python/detail/preprocessor.hpp>
+
+#  include <boost/python/arg_from_python.hpp>
+#  include <boost/python/converter/context_result_converter.hpp>
+#  include <boost/python/converter/builtin_converters.hpp>
+
+#  include <boost/preprocessor/iterate.hpp>
+#  include <boost/preprocessor/cat.hpp>
+#  include <boost/preprocessor/dec.hpp>
+#  include <boost/preprocessor/if.hpp>
+#  include <boost/preprocessor/iteration/local.hpp>
+#  include <boost/preprocessor/repetition/enum_trailing_params.hpp>
+#  include <boost/preprocessor/repetition/repeat.hpp>
+
+#  include <boost/compressed_pair.hpp>
+
+#  include <boost/type_traits/is_same.hpp>
+#  include <boost/type_traits/is_convertible.hpp>
+
+#  include <boost/mpl/apply.hpp>
+#  include <boost/mpl/eval_if.hpp>
+#  include <boost/mpl/identity.hpp>
+#  include <boost/mpl/size.hpp>
+#  include <boost/mpl/at.hpp>
+#  include <boost/mpl/int.hpp>
+#  include <boost/mpl/next.hpp>
+
+namespace boost { namespace python { namespace detail { 
+
+template <int N>
+inline PyObject* get(mpl::int_<N>, 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 <class Policies, class Result>
+struct select_result_converter
+  : mpl::eval_if<
+        is_same<Result,void>
+      , mpl::identity<void_result_to_python>
+      , mpl::apply1<typename Policies::result_converter,Result>
+    >
+{
+};
+
+template <class ArgPackage, class ResultConverter>
+inline ResultConverter create_result_converter(
+    ArgPackage const& args_
+  , ResultConverter*
+  , converter::context_result_converter*
+)
+{
+    return ResultConverter(args_);
+}
+    
+template <class ArgPackage, class ResultConverter>
+inline ResultConverter create_result_converter(
+    ArgPackage const&
+  , ResultConverter*
+  , ...
+)
+{
+    return ResultConverter();
+}
+
+#ifndef BOOST_PYTHON_NO_PY_SIGNATURES
+template <class ResultConverter>
+struct converter_target_type 
+{
+    static PyTypeObject const *get_pytype()
+    {
+        return create_result_converter((PyObject*)0, (ResultConverter *)0, (ResultConverter *)0).get_pytype();
+    }
+};
+
+template < >
+struct converter_target_type <void_result_to_python >
+{
+    static PyTypeObject const *get_pytype()
+    {
+        return 0;
+    }
+};
+#endif
+
+    
+template <unsigned> struct caller_arity;
+
+template <class F, class CallPolicies, class Sig>
+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<first>::type, arg_iter,n)             \
+     typedef arg_from_python<BOOST_DEDUCED_TYPENAME arg_iter##n::type> c_t##n;  \
+     c_t##n c##n(get(mpl::int_<n>(), inner_args));                              \
+     if (!c##n.convertible())                                                   \
+          return 0;
+
+#  define BOOST_PP_ITERATION_PARAMS_1                                            \
+        (3, (0, BOOST_PYTHON_MAX_ARITY + 1, <boost/python/detail/caller.hpp>))
+#  include BOOST_PP_ITERATE()
+
+#  undef BOOST_PYTHON_ARG_CONVERTER
+#  undef BOOST_PYTHON_NEXT
+
+// A metafunction returning the base class used for caller<class F,
+// class ConverterGenerators, class CallPolicies, class Sig>.
+template <class F, class CallPolicies, class Sig>
+struct caller_base_select
+{
+    enum { arity = mpl::size<Sig>::value - 1 };
+    typedef typename caller_arity<arity>::template impl<F,CallPolicies,Sig> 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<Sig>::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 <class F, class CallPolicies, class Sig>
+struct caller
+    : caller_base_select<F,CallPolicies,Sig>::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<N>
+{
+    template <class F, class Policies, class Sig>
+    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<Sig>::type first;
+            typedef typename first::type result_t;
+            typedef typename select_result_converter<Policies, result_t>::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<result_t,F>()
+              , 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 py_func_sig_info  signature()
+        {
+            const signature_element * sig = detail::signature<Sig>::elements();
+#ifndef BOOST_PYTHON_NO_PY_SIGNATURES
+
+            typedef BOOST_DEDUCED_TYPENAME Policies::template extract_return_type<Sig>::type rtype;
+            typedef typename select_result_converter<Policies, rtype>::type result_converter;
+
+            static const signature_element ret = {
+                (boost::is_void<rtype>::value ? "void" : type_id<rtype>().name())
+                , &detail::converter_target_type<result_converter>::get_pytype
+                , boost::detail::indirect_traits::is_reference_to_non_const<rtype>::value 
+            };
+            py_func_sig_info res = {sig, &ret };
+#else
+            py_func_sig_info res = {sig, sig };
+#endif
+
+            return  res;
+        }
+     private:
+        compressed_pair<F,Policies> m_data;
+    };
+};
+
+
+
+#endif // BOOST_PP_IS_ITERATING 
+
+