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function objects for operator export

[SVN r8204]
This commit is contained in:
Ullrich Köthe
2000-11-14 19:35:48 +00:00
parent 9f30f7dfd7
commit fbf4e90df0

348
operators.h Normal file
View File

@@ -0,0 +1,348 @@
#ifndef OPERATORS_UK112000_H_
#define OPERATORS_UK112000_H_
#include "functions.h"
#include <strstream>
namespace py
{
namespace detail
{
template <>
struct define_operator<0>
{
template <class left, class right = left>
struct operator_function : Function
{
PyObject* do_call(PyObject* arguments, PyObject* keywords) const
{
PyErr_SetString(PyExc_TypeError, "operator not implemented");
throw ErrorAlreadySet();
}
const char* description() const
{ return "__error__"; }
};
template <class left, class right = left>
struct roperator_function : Function
{
PyObject* do_call(PyObject* arguments, PyObject* keywords) const
{
PyErr_SetString(PyExc_TypeError, "operator not implemented");
throw ErrorAlreadySet();
}
const char* description() const
{ return "__error__"; }
};
static const char * name() { return "__error__"; }
static const char * rname() { return "__error__"; }
};
#define py_define_binary_operators(id, oper) \
template <> \
struct define_operator<op_##id> \
{ \
template <class left, class right = left> \
struct operator_function : Function \
{ \
PyObject* do_call(PyObject* arguments, PyObject* /* keywords */) const \
{ \
Tuple args(Ptr(arguments, Ptr::new_ref)); \
\
return PY_CONVERSION::to_python( \
PY_CONVERSION::from_python(args[0].get(), py::Type<left>()) oper \
PY_CONVERSION::from_python(args[1].get(), py::Type<right>())); \
} \
\
const char* description() const \
{ return "__" #id "__"; } \
\
}; \
template <class right, class left> \
struct roperator_function : Function \
{ \
PyObject* do_call(PyObject* arguments, PyObject* /* keywords */) const \
{ \
Tuple args(Ptr(arguments, Ptr::new_ref)); \
\
return PY_CONVERSION::to_python( \
PY_CONVERSION::from_python(args[1].get(), py::Type<left>()) oper \
PY_CONVERSION::from_python(args[0].get(), py::Type<right>())); \
} \
\
const char* description() const \
{ return "__r" #id "__"; } \
\
}; \
\
static const char * name() { return "__" #id "__"; } \
static const char * rname() { return "__r" #id "__"; } \
}
#define py_define_unary_operators(id, oper) \
template <> \
struct define_operator<op_##id> \
{ \
template <class operand> \
struct operator_function : Function \
{ \
PyObject* do_call(PyObject* arguments, PyObject* /* keywords */) const \
{ \
Tuple args(Ptr(arguments, Ptr::new_ref)); \
\
return PY_CONVERSION::to_python( \
oper(PY_CONVERSION::from_python(args[0].get(), py::Type<operand>()))); \
} \
\
const char* description() const \
{ return "__" #id "__"; } \
\
}; \
\
static const char * name() { return "__" #id "__"; } \
}
#define py_define_conversion_operators(id, oper) \
template <> \
struct define_operator<op_##id> \
{ \
template <class operand> \
struct operator_function : Function \
{ \
PyObject* do_call(PyObject* arguments, PyObject* /* keywords */) const \
{ \
Tuple args(Ptr(arguments, Ptr::new_ref)); \
\
return PY_CONVERSION::to_python( \
oper(PY_CONVERSION::from_python(args[0].get(), py::Type<operand>()))); \
} \
\
const char* description() const \
{ return "__" #id "_"; } \
\
}; \
\
static const char * name() { return "__" #id "_"; } \
}
py_define_binary_operators(add, +);
py_define_binary_operators(sub, -);
py_define_binary_operators(mul, *);
py_define_binary_operators(div, /);
py_define_binary_operators(mod, %);
py_define_binary_operators(lshift, <<);
py_define_binary_operators(rshift, >>);
py_define_binary_operators(and, &);
py_define_binary_operators(xor, ^);
py_define_binary_operators(or, |);
py_define_unary_operators(neg, -);
py_define_unary_operators(pos, +);
py_define_unary_operators(abs, abs);
py_define_unary_operators(invert, ~);
py_define_conversion_operators(int, int);
py_define_conversion_operators(long, long);
py_define_conversion_operators(float, double);
#undef py_define_binary_operators
#undef py_define_unary_operators
#undef py_define_conversion_operators
template <>
struct define_operator<op_pow>
{
template <class left, class right = left>
struct operator_function : Function
{
PyObject* do_call(PyObject* arguments, PyObject* /* keywords */) const
{
Tuple args(Ptr(arguments, Ptr::new_ref));
if(args.size() == 3 && args[2]->ob_type != Py_None->ob_type)
{
PyErr_SetString(PyExc_TypeError, "expected 2 arguments, got 3");
throw ArgumentError();
}
return PY_CONVERSION::to_python(
pow(PY_CONVERSION::from_python(args[0].get(), py::Type<left>()),
PY_CONVERSION::from_python(args[1].get(), py::Type<right>())));
}
const char* description() const
{ return "__pow__"; }
};
template <class right, class left>
struct roperator_function : Function
{
PyObject* do_call(PyObject* arguments, PyObject* /* keywords */) const
{
Tuple args(Ptr(arguments, Ptr::new_ref));
if(args.size() == 3 && args[2]->ob_type != Py_None->ob_type)
{
PyErr_SetString(PyExc_TypeError, "expected 2 arguments, got 3");
throw ArgumentError();
}
return PY_CONVERSION::to_python(
pow(PY_CONVERSION::from_python(args[1].get(), py::Type<left>()),
PY_CONVERSION::from_python(args[0].get(), py::Type<right>())));
}
const char* description() const
{ return "__rpow__"; }
};
static const char * name() { return "__pow__"; }
static const char * rname() { return "__rpow__"; }
};
template <>
struct define_operator<op_divmod>
{
template <class left, class right = left>
struct operator_function : Function
{
PyObject* do_call(PyObject* arguments, PyObject* /* keywords */) const
{
Tuple args(Ptr(arguments, Ptr::new_ref));
PyObject * res = PyTuple_New(2);
PyTuple_SET_ITEM(res, 0,
PY_CONVERSION::to_python(
PY_CONVERSION::from_python(args[0].get(), py::Type<left>()) /
PY_CONVERSION::from_python(args[1].get(), py::Type<right>())));
PyTuple_SET_ITEM(res, 1,
PY_CONVERSION::to_python(
PY_CONVERSION::from_python(args[0].get(), py::Type<left>()) %
PY_CONVERSION::from_python(args[1].get(), py::Type<right>())));
return res;
}
const char* description() const
{ return "__divmod__"; }
};
template <class right, class left>
struct roperator_function : Function
{
PyObject* do_call(PyObject* arguments, PyObject* /* keywords */) const
{
Tuple args(Ptr(arguments, Ptr::new_ref));
PyObject * res = PyTuple_New(2);
PyTuple_SET_ITEM(res, 0,
PY_CONVERSION::to_python(
PY_CONVERSION::from_python(args[1].get(), py::Type<left>()) /
PY_CONVERSION::from_python(args[0].get(), py::Type<right>())));
PyTuple_SET_ITEM(res, 1,
PY_CONVERSION::to_python(
PY_CONVERSION::from_python(args[1].get(), py::Type<left>()) %
PY_CONVERSION::from_python(args[0].get(), py::Type<right>())));
return res;
}
const char* description() const
{ return "__rdivmod__"; }
};
static const char * name() { return "__divmod__"; }
static const char * rname() { return "__rdivmod__"; }
};
template <>
struct define_operator<op_cmp>
{
template <class left, class right = left>
struct operator_function : Function
{
PyObject* do_call(PyObject* arguments, PyObject* /* keywords */) const
{
Tuple args(Ptr(arguments, Ptr::new_ref));
return PY_CONVERSION::to_python(
(PY_CONVERSION::from_python(args[0].get(), py::Type<left>()) <
PY_CONVERSION::from_python(args[1].get(), py::Type<right>())) ?
- 1 :
(PY_CONVERSION::from_python(args[1].get(), py::Type<right>()) <
PY_CONVERSION::from_python(args[0].get(), py::Type<left>())) ?
1 :
0) ;
}
const char* description() const
{ return "__cmp__"; }
};
template <class right, class left>
struct roperator_function : Function
{
PyObject* do_call(PyObject* arguments, PyObject* /* keywords */) const
{
Tuple args(Ptr(arguments, Ptr::new_ref));
return PY_CONVERSION::to_python(
(PY_CONVERSION::from_python(args[1].get(), py::Type<left>()) <
PY_CONVERSION::from_python(args[0].get(), py::Type<right>())) ?
- 1 :
(PY_CONVERSION::from_python(args[0].get(), py::Type<right>()) <
PY_CONVERSION::from_python(args[1].get(), py::Type<left>())) ?
1 :
0) ;
}
const char* description() const
{ return "__rcmp__"; }
};
static const char * name() { return "__cmp__"; }
static const char * rname() { return "__rcmp__"; }
};
template <>
struct define_operator<op_str>
{
template <class operand>
struct operator_function : Function
{
PyObject* do_call(PyObject* arguments, PyObject* keywords) const
{
Tuple args(Ptr(arguments, Ptr::new_ref));
std::strstream s;
s << PY_CONVERSION::from_python(args[0].get(), py::Type<operand>());
return PY_CONVERSION::to_python(const_cast<char const *>(s.str()));
}
const char* description() const
{ return "__str__"; }
};
static const char * name() { return "__str__"; }
};
} // namespace detail
} // namespace py
#endif /* OPERATORS_UK112000_H_ */