Added boost header

test/external/boost/python/default_call_policies.hpp

@@ -0,0 +1,91 @@
+// 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 DEFAULT_CALL_POLICIES_DWA2002131_HPP
+# define DEFAULT_CALL_POLICIES_DWA2002131_HPP
+
+# include <boost/python/detail/prefix.hpp>
+# include <boost/mpl/if.hpp>
+# include <boost/python/to_python_value.hpp>
+# include <boost/python/detail/value_arg.hpp>
+# include <boost/type_traits/transform_traits.hpp>
+# include <boost/type_traits/is_pointer.hpp>
+# include <boost/type_traits/is_reference.hpp>
+# include <boost/mpl/or.hpp>
+# include <boost/mpl/front.hpp>
+
+namespace boost { namespace python { 
+
+template <class T> struct to_python_value;
+
+namespace detail
+{
+// for "readable" error messages
+  template <class T> struct specify_a_return_value_policy_to_wrap_functions_returning
+# if defined(__GNUC__) && __GNUC__ >= 3 || defined(__EDG__)
+  {}
+# endif 
+  ;
+}
+
+struct default_result_converter;
+
+struct default_call_policies
+{
+    // Ownership of this argument tuple will ultimately be adopted by
+    // the caller.
+    template <class ArgumentPackage>
+    static bool precall(ArgumentPackage const&)
+    {
+        return true;
+    }
+
+    // Pass the result through
+    template <class ArgumentPackage>
+    static PyObject* postcall(ArgumentPackage const&, PyObject* result)
+    {
+        return result;
+    }
+
+    typedef default_result_converter result_converter;
+    typedef PyObject* argument_package;
+
+    template <class Sig> 
+    struct extract_return_type : mpl::front<Sig>
+    {
+    };
+
+};
+
+struct default_result_converter
+{
+    template <class R>
+    struct apply
+    {
+        typedef typename mpl::if_<
+            mpl::or_<is_pointer<R>, is_reference<R> >
+          , detail::specify_a_return_value_policy_to_wrap_functions_returning<R>
+          , boost::python::to_python_value<
+                typename detail::value_arg<R>::type
+            >
+        >::type type;
+    };
+};
+
+// Exceptions for c strings an PyObject*s
+template <>
+struct default_result_converter::apply<char const*>
+{
+    typedef boost::python::to_python_value<char const*const&> type;
+};
+
+template <>
+struct default_result_converter::apply<PyObject*>
+{
+    typedef boost::python::to_python_value<PyObject*const&> type;
+};
+
+}} // namespace boost::python
+
+#endif // DEFAULT_CALL_POLICIES_DWA2002131_HPP