// 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 OBJECT_OPERATORS_DWA2002617_HPP # define OBJECT_OPERATORS_DWA2002617_HPP # include <boost/python/detail/prefix.hpp> # include <boost/python/object_core.hpp> # include <boost/python/call.hpp> # include <boost/iterator/detail/enable_if.hpp> # include <boost/mpl/bool.hpp> # include <boost/iterator/detail/config_def.hpp> namespace boost { namespace python { namespace api { template <class X> char is_object_operators_helper(object_operators<X> const*); typedef char (&no_type)[2]; no_type is_object_operators_helper(...); template <class X> X* make_ptr(); template <class L, class R = L> struct is_object_operators { enum { value = (sizeof(api::is_object_operators_helper(api::make_ptr<L>())) + sizeof(api::is_object_operators_helper(api::make_ptr<R>())) < 4 ) }; typedef mpl::bool_<value> type; }; # if !defined(BOOST_NO_SFINAE) && !defined(BOOST_NO_IS_CONVERTIBLE) template <class L, class R, class T> struct enable_binary : boost::iterators::enable_if<is_object_operators<L,R>, T> {}; # define BOOST_PYTHON_BINARY_RETURN(T) typename enable_binary<L,R,T>::type # else # define BOOST_PYTHON_BINARY_RETURN(T) T # endif template <class U> object object_operators<U>::operator()() const { object_cref2 f = *static_cast<U const*>(this); return call<object>(f.ptr()); } template <class U> inline object_operators<U>::operator bool_type() const { object_cref2 x = *static_cast<U const*>(this); int is_true = PyObject_IsTrue(x.ptr()); if (is_true < 0) throw_error_already_set(); return is_true ? &object::ptr : 0; } template <class U> inline bool object_operators<U>::operator!() const { object_cref2 x = *static_cast<U const*>(this); int is_true = PyObject_IsTrue(x.ptr()); if (is_true < 0) throw_error_already_set(); return !is_true; } # define BOOST_PYTHON_COMPARE_OP(op, opid) \ template <class L, class R> \ BOOST_PYTHON_BINARY_RETURN(object) operator op(L const& l, R const& r) \ { \ return PyObject_RichCompare( \ object(l).ptr(), object(r).ptr(), opid); \ } # undef BOOST_PYTHON_COMPARE_OP # define BOOST_PYTHON_BINARY_OPERATOR(op) \ BOOST_PYTHON_DECL object operator op(object const& l, object const& r); \ template <class L, class R> \ BOOST_PYTHON_BINARY_RETURN(object) operator op(L const& l, R const& r) \ { \ return object(l) op object(r); \ } BOOST_PYTHON_BINARY_OPERATOR(>) BOOST_PYTHON_BINARY_OPERATOR(>=) BOOST_PYTHON_BINARY_OPERATOR(<) BOOST_PYTHON_BINARY_OPERATOR(<=) BOOST_PYTHON_BINARY_OPERATOR(==) BOOST_PYTHON_BINARY_OPERATOR(!=) BOOST_PYTHON_BINARY_OPERATOR(+) BOOST_PYTHON_BINARY_OPERATOR(-) BOOST_PYTHON_BINARY_OPERATOR(*) BOOST_PYTHON_BINARY_OPERATOR(/) BOOST_PYTHON_BINARY_OPERATOR(%) BOOST_PYTHON_BINARY_OPERATOR(<<) BOOST_PYTHON_BINARY_OPERATOR(>>) BOOST_PYTHON_BINARY_OPERATOR(&) BOOST_PYTHON_BINARY_OPERATOR(^) BOOST_PYTHON_BINARY_OPERATOR(|) # undef BOOST_PYTHON_BINARY_OPERATOR # define BOOST_PYTHON_INPLACE_OPERATOR(op) \ BOOST_PYTHON_DECL object& operator op(object& l, object const& r); \ template <class R> \ object& operator op(object& l, R const& r) \ { \ return l op object(r); \ } BOOST_PYTHON_INPLACE_OPERATOR(+=) BOOST_PYTHON_INPLACE_OPERATOR(-=) BOOST_PYTHON_INPLACE_OPERATOR(*=) BOOST_PYTHON_INPLACE_OPERATOR(/=) BOOST_PYTHON_INPLACE_OPERATOR(%=) BOOST_PYTHON_INPLACE_OPERATOR(<<=) BOOST_PYTHON_INPLACE_OPERATOR(>>=) BOOST_PYTHON_INPLACE_OPERATOR(&=) BOOST_PYTHON_INPLACE_OPERATOR(^=) BOOST_PYTHON_INPLACE_OPERATOR(|=) # undef BOOST_PYTHON_INPLACE_OPERATOR }}} // namespace boost::python #include <boost/iterator/detail/config_undef.hpp> #endif // OBJECT_OPERATORS_DWA2002617_HPP