137 lines
4.4 KiB
C++
137 lines
4.4 KiB
C++
// Copyright David Abrahams 2002.
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef OBJECT_OPERATORS_DWA2002617_HPP
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# define OBJECT_OPERATORS_DWA2002617_HPP
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# include <boost/python/detail/prefix.hpp>
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# include <boost/python/object_core.hpp>
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# include <boost/python/call.hpp>
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# include <boost/iterator/detail/enable_if.hpp>
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# include <boost/mpl/bool.hpp>
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# include <boost/iterator/detail/config_def.hpp>
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namespace boost { namespace python { namespace api {
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template <class X>
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char is_object_operators_helper(object_operators<X> const*);
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typedef char (&no_type)[2];
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no_type is_object_operators_helper(...);
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template <class X> X* make_ptr();
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template <class L, class R = L>
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struct is_object_operators
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{
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enum {
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value
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= (sizeof(api::is_object_operators_helper(api::make_ptr<L>()))
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+ sizeof(api::is_object_operators_helper(api::make_ptr<R>()))
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< 4
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)
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};
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typedef mpl::bool_<value> type;
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};
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# if !defined(BOOST_NO_SFINAE) && !defined(BOOST_NO_IS_CONVERTIBLE)
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template <class L, class R, class T>
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struct enable_binary
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: boost::iterators::enable_if<is_object_operators<L,R>, T>
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{};
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# define BOOST_PYTHON_BINARY_RETURN(T) typename enable_binary<L,R,T>::type
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# else
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# define BOOST_PYTHON_BINARY_RETURN(T) T
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# endif
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template <class U>
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object object_operators<U>::operator()() const
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{
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object_cref2 f = *static_cast<U const*>(this);
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return call<object>(f.ptr());
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}
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template <class U>
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inline
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object_operators<U>::operator bool_type() const
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{
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object_cref2 x = *static_cast<U const*>(this);
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int is_true = PyObject_IsTrue(x.ptr());
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if (is_true < 0) throw_error_already_set();
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return is_true ? &object::ptr : 0;
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}
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template <class U>
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inline bool
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object_operators<U>::operator!() const
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{
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object_cref2 x = *static_cast<U const*>(this);
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int is_true = PyObject_IsTrue(x.ptr());
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if (is_true < 0) throw_error_already_set();
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return !is_true;
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}
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# define BOOST_PYTHON_COMPARE_OP(op, opid) \
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template <class L, class R> \
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BOOST_PYTHON_BINARY_RETURN(object) operator op(L const& l, R const& r) \
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{ \
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return PyObject_RichCompare( \
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object(l).ptr(), object(r).ptr(), opid); \
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}
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# undef BOOST_PYTHON_COMPARE_OP
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# define BOOST_PYTHON_BINARY_OPERATOR(op) \
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BOOST_PYTHON_DECL object operator op(object const& l, object const& r); \
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template <class L, class R> \
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BOOST_PYTHON_BINARY_RETURN(object) operator op(L const& l, R const& r) \
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{ \
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return object(l) op object(r); \
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}
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BOOST_PYTHON_BINARY_OPERATOR(>)
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BOOST_PYTHON_BINARY_OPERATOR(>=)
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BOOST_PYTHON_BINARY_OPERATOR(<)
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BOOST_PYTHON_BINARY_OPERATOR(<=)
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BOOST_PYTHON_BINARY_OPERATOR(==)
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BOOST_PYTHON_BINARY_OPERATOR(!=)
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BOOST_PYTHON_BINARY_OPERATOR(+)
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BOOST_PYTHON_BINARY_OPERATOR(-)
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BOOST_PYTHON_BINARY_OPERATOR(*)
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BOOST_PYTHON_BINARY_OPERATOR(/)
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BOOST_PYTHON_BINARY_OPERATOR(%)
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BOOST_PYTHON_BINARY_OPERATOR(<<)
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BOOST_PYTHON_BINARY_OPERATOR(>>)
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BOOST_PYTHON_BINARY_OPERATOR(&)
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BOOST_PYTHON_BINARY_OPERATOR(^)
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BOOST_PYTHON_BINARY_OPERATOR(|)
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# undef BOOST_PYTHON_BINARY_OPERATOR
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# define BOOST_PYTHON_INPLACE_OPERATOR(op) \
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BOOST_PYTHON_DECL object& operator op(object& l, object const& r); \
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template <class R> \
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object& operator op(object& l, R const& r) \
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{ \
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return l op object(r); \
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}
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BOOST_PYTHON_INPLACE_OPERATOR(+=)
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BOOST_PYTHON_INPLACE_OPERATOR(-=)
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BOOST_PYTHON_INPLACE_OPERATOR(*=)
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BOOST_PYTHON_INPLACE_OPERATOR(/=)
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BOOST_PYTHON_INPLACE_OPERATOR(%=)
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BOOST_PYTHON_INPLACE_OPERATOR(<<=)
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BOOST_PYTHON_INPLACE_OPERATOR(>>=)
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BOOST_PYTHON_INPLACE_OPERATOR(&=)
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BOOST_PYTHON_INPLACE_OPERATOR(^=)
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BOOST_PYTHON_INPLACE_OPERATOR(|=)
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# undef BOOST_PYTHON_INPLACE_OPERATOR
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}}} // namespace boost::python
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#include <boost/iterator/detail/config_undef.hpp>
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#endif // OBJECT_OPERATORS_DWA2002617_HPP
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