sl@0: // Copyright David Abrahams 2002.
sl@0: // Distributed under the Boost Software License, Version 1.0. (See
sl@0: // accompanying file LICENSE_1_0.txt or copy at
sl@0: // http://www.boost.org/LICENSE_1_0.txt)
sl@0: #ifndef DEF_DWA200292_HPP
sl@0: # define DEF_DWA200292_HPP
sl@0: 
sl@0: # include <boost/python/detail/prefix.hpp>
sl@0: 
sl@0: # include <boost/python/object_fwd.hpp>
sl@0: # include <boost/python/make_function.hpp>
sl@0: # include <boost/python/detail/def_helper.hpp>
sl@0: # include <boost/python/detail/overloads_fwd.hpp>
sl@0: # include <boost/python/scope.hpp>
sl@0: # include <boost/python/signature.hpp>
sl@0: # include <boost/python/detail/scope.hpp>
sl@0: 
sl@0: namespace boost { namespace python {
sl@0: 
sl@0: namespace detail
sl@0: {
sl@0:   namespace error
sl@0:   {
sl@0:     // Compile-time error messages
sl@0:     template <bool> struct multiple_functions_passed_to_def;
sl@0:     template <> struct multiple_functions_passed_to_def<false> { typedef char type; };
sl@0:   }
sl@0:   
sl@0:   //
sl@0:   // def_from_helper --
sl@0:   //
sl@0:   // Use a def_helper to define a regular wrapped function in the current scope.
sl@0:   template <class F, class Helper>
sl@0:   void def_from_helper(
sl@0:       char const* name, F const& fn, Helper const& helper)
sl@0:   {
sl@0:       // Must not try to use default implementations except with method definitions.
sl@0:       typedef typename error::multiple_functions_passed_to_def<
sl@0:           Helper::has_default_implementation
sl@0:           >::type assertion;
sl@0:       
sl@0:       detail::scope_setattr_doc(
sl@0:           name, boost::python::make_function(
sl@0:               fn
sl@0:               , helper.policies()
sl@0:               , helper.keywords())
sl@0:           , helper.doc()
sl@0:           );
sl@0:   }
sl@0: 
sl@0:   //
sl@0:   // These two overloads discriminate between def() as applied to
sl@0:   // regular functions and def() as applied to the result of
sl@0:   // BOOST_PYTHON_FUNCTION_OVERLOADS(). The final argument is used to
sl@0:   // discriminate.
sl@0:   //
sl@0:   template <class Fn, class A1>
sl@0:   void
sl@0:   def_maybe_overloads(
sl@0:       char const* name
sl@0:       , Fn fn
sl@0:       , A1 const& a1
sl@0:       , ...)
sl@0:   {
sl@0:       detail::def_from_helper(name, fn, def_helper<A1>(a1));
sl@0:   }
sl@0: 
sl@0:   template <class StubsT, class SigT>
sl@0:   void def_maybe_overloads(
sl@0:       char const* name
sl@0:       , SigT sig
sl@0:       , StubsT const& stubs
sl@0:       , detail::overloads_base const*)
sl@0:   {
sl@0:       scope current;
sl@0:       
sl@0:       detail::define_with_defaults(
sl@0:           name, stubs, current, detail::get_signature(sig));
sl@0:   }
sl@0: 
sl@0:   template <class T>
sl@0:   object make_function1(T fn, ...) { return make_function(fn); }
sl@0: 
sl@0:   inline
sl@0:   object make_function1(object const& x, object const*) { return x; }
sl@0: }
sl@0: 
sl@0: template <class Fn>
sl@0: void def(char const* name, Fn fn)
sl@0: {
sl@0:     detail::scope_setattr_doc(name, detail::make_function1(fn, &fn), 0);
sl@0: }
sl@0: 
sl@0: template <class Arg1T, class Arg2T>
sl@0: void def(char const* name, Arg1T arg1, Arg2T const& arg2)
sl@0: {
sl@0:     detail::def_maybe_overloads(name, arg1, arg2, &arg2);
sl@0: }
sl@0: 
sl@0: template <class F, class A1, class A2>
sl@0: void def(char const* name, F f, A1 const& a1, A2 const& a2)
sl@0: {
sl@0:     detail::def_from_helper(name, f, detail::def_helper<A1,A2>(a1,a2));
sl@0: }
sl@0: 
sl@0: template <class F, class A1, class A2, class A3>
sl@0: void def(char const* name, F f, A1 const& a1, A2 const& a2, A3 const& a3)
sl@0: {
sl@0:     detail::def_from_helper(name, f, detail::def_helper<A1,A2,A3>(a1,a2,a3));
sl@0: }
sl@0: 
sl@0: }} // namespace boost::python
sl@0: 
sl@0: #endif // DEF_DWA200292_HPP