Chris@16: // Copyright David Abrahams 2002.
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: #ifndef DEF_DWA200292_HPP
Chris@16: # define DEF_DWA200292_HPP
Chris@16: 
Chris@16: # include <boost/python/detail/prefix.hpp>
Chris@16: 
Chris@16: # include <boost/python/object_fwd.hpp>
Chris@16: # include <boost/python/make_function.hpp>
Chris@16: # include <boost/python/detail/def_helper.hpp>
Chris@16: # include <boost/python/detail/overloads_fwd.hpp>
Chris@16: # include <boost/python/scope.hpp>
Chris@16: # include <boost/python/signature.hpp>
Chris@16: # include <boost/python/detail/scope.hpp>
Chris@16: 
Chris@16: namespace boost { namespace python {
Chris@16: 
Chris@16: namespace detail
Chris@16: {
Chris@16:   namespace error
Chris@16:   {
Chris@16:     // Compile-time error messages
Chris@16:     template <bool> struct multiple_functions_passed_to_def;
Chris@16:     template <> struct multiple_functions_passed_to_def<false> { typedef char type; };
Chris@16:   }
Chris@16:   
Chris@16:   //
Chris@16:   // def_from_helper --
Chris@16:   //
Chris@16:   // Use a def_helper to define a regular wrapped function in the current scope.
Chris@16:   template <class F, class Helper>
Chris@16:   void def_from_helper(
Chris@16:       char const* name, F const& fn, Helper const& helper)
Chris@16:   {
Chris@16:       // Must not try to use default implementations except with method definitions.
Chris@16:       typedef typename error::multiple_functions_passed_to_def<
Chris@16:           Helper::has_default_implementation
Chris@16:           >::type assertion;
Chris@16:       
Chris@16:       detail::scope_setattr_doc(
Chris@16:           name, boost::python::make_function(
Chris@16:               fn
Chris@16:               , helper.policies()
Chris@16:               , helper.keywords())
Chris@16:           , helper.doc()
Chris@16:           );
Chris@16:   }
Chris@16: 
Chris@16:   //
Chris@16:   // These two overloads discriminate between def() as applied to
Chris@16:   // regular functions and def() as applied to the result of
Chris@16:   // BOOST_PYTHON_FUNCTION_OVERLOADS(). The final argument is used to
Chris@16:   // discriminate.
Chris@16:   //
Chris@16:   template <class Fn, class A1>
Chris@16:   void
Chris@16:   def_maybe_overloads(
Chris@16:       char const* name
Chris@16:       , Fn fn
Chris@16:       , A1 const& a1
Chris@16:       , ...)
Chris@16:   {
Chris@16:       detail::def_from_helper(name, fn, def_helper<A1>(a1));
Chris@16:   }
Chris@16: 
Chris@16:   template <class StubsT, class SigT>
Chris@16:   void def_maybe_overloads(
Chris@16:       char const* name
Chris@16:       , SigT sig
Chris@16:       , StubsT const& stubs
Chris@16:       , detail::overloads_base const*)
Chris@16:   {
Chris@16:       scope current;
Chris@16:       
Chris@16:       detail::define_with_defaults(
Chris@16:           name, stubs, current, detail::get_signature(sig));
Chris@16:   }
Chris@16: 
Chris@16:   template <class T>
Chris@16:   object make_function1(T fn, ...) { return make_function(fn); }
Chris@16: 
Chris@16:   inline
Chris@16:   object make_function1(object const& x, object const*) { return x; }
Chris@16: }
Chris@16: 
Chris@16: template <class Fn>
Chris@16: void def(char const* name, Fn fn)
Chris@16: {
Chris@16:     detail::scope_setattr_doc(name, detail::make_function1(fn, &fn), 0);
Chris@16: }
Chris@16: 
Chris@16: template <class Arg1T, class Arg2T>
Chris@16: void def(char const* name, Arg1T arg1, Arg2T const& arg2)
Chris@16: {
Chris@16:     detail::def_maybe_overloads(name, arg1, arg2, &arg2);
Chris@16: }
Chris@16: 
Chris@16: template <class F, class A1, class A2>
Chris@16: void def(char const* name, F f, A1 const& a1, A2 const& a2)
Chris@16: {
Chris@16:     detail::def_from_helper(name, f, detail::def_helper<A1,A2>(a1,a2));
Chris@16: }
Chris@16: 
Chris@16: template <class F, class A1, class A2, class A3>
Chris@16: void def(char const* name, F f, A1 const& a1, A2 const& a2, A3 const& a3)
Chris@16: {
Chris@16:     detail::def_from_helper(name, f, detail::def_helper<A1,A2,A3>(a1,a2,a3));
Chris@16: }
Chris@16: 
Chris@16: }} // namespace boost::python
Chris@16: 
Chris@16: #endif // DEF_DWA200292_HPP