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