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Introducing __reduce_ex__, which is called with a protocol number argument

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if it exists in preference over __reduce__.  Now Tim can go implement this
in cPickle.c.
This commit is contained in:
Guido van Rossum 2003-02-18 22:05:12 +00:00
parent 2b0643a95d
commit c53f009f94
4 changed files with 36 additions and 19 deletions
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14
Objects/typeobject.c
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@ -2441,11 +2441,15 @@ static PyGetSetDef object_getsets[] = {
};
static PyObject *
object_reduce(PyObject *self, PyObject *args)
object_reduce_ex(PyObject *self, PyObject *args)
{
/* Call copy_reg._reduce(self) */
/* Call copy_reg._reduce_ex(self, proto) */
static PyObject *copy_reg_str;
PyObject *copy_reg, *res;
int proto = 0;
if (!PyArg_ParseTuple(args, "|i:__reduce_ex__", &proto))
return NULL;
if (!copy_reg_str) {
copy_reg_str = PyString_InternFromString("copy_reg");
@ -2455,13 +2459,15 @@ object_reduce(PyObject *self, PyObject *args)
copy_reg = PyImport_Import(copy_reg_str);
if (!copy_reg)
return NULL;
res = PyEval_CallMethod(copy_reg, "_reduce", "(O)", self);
res = PyEval_CallMethod(copy_reg, "_reduce_ex", "(Oi)", self, proto);
Py_DECREF(copy_reg);
return res;
}
static PyMethodDef object_methods[] = {
{"__reduce__", object_reduce, METH_NOARGS,
{"__reduce_ex__", object_reduce_ex, METH_VARARGS,
PyDoc_STR("helper for pickle")},
{"__reduce__", object_reduce_ex, METH_VARARGS,
PyDoc_STR("helper for pickle")},
{0}
};