1 files changed, 114 insertions, 0 deletions
diff --git a/boost/python/def.hpp b/boost/python/def.hpp
new file mode 100644
index 0000000000..76829b0855
--- /dev/null
+++ b/boost/python/def.hpp
@@ -0,0 +1,114 @@
+// 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