| // 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 |