// Copyright David Abrahams 2003. // 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_VISITOR_DWA2003810_HPP # define DEF_VISITOR_DWA2003810_HPP # include # include namespace boost { namespace python { template class def_visitor; template class class_; class def_visitor_access { # if defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS) \ || BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551)) // Tasteless as this may seem, making all members public allows member templates // to work in the absence of member template friends. public: # else template friend class def_visitor; # endif // unnamed visit, c.f. init<...>, container suites template static void visit(V const& v, classT& c) { v.derived_visitor().visit(c); } // named visit, c.f. object, pure_virtual template static void visit( V const& v , classT& c , char const* name , OptionalArgs const& options ) { v.derived_visitor().visit(c, name, options); } }; template class def_visitor { friend class def_visitor_access; # if defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS) \ || BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551)) // Tasteless as this may seem, making all members public allows member templates // to work in the absence of member template friends. public: # else template friend class class_; # endif // unnamed visit, c.f. init<...>, container suites template void visit(classT& c) const { def_visitor_access::visit(*this, c); } // named visit, c.f. object, pure_virtual template void visit(classT& c, char const* name, OptionalArgs const& options) const { def_visitor_access::visit(*this, c, name, options); } protected: DerivedVisitor const& derived_visitor() const { return static_cast(*this); } }; }} // namespace boost::python #endif // DEF_VISITOR_DWA2003810_HPP