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Rewritten some pieces of PyNumber_InPlaceAdd() for clarity.

This commit is contained in:
Guido van Rossum 2000-09-01 23:27:32 +00:00
parent 46981de633
commit bb8be93a50
1 changed files with 20 additions and 15 deletions
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35
Objects/abstract.c
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@ -810,28 +810,33 @@ PyNumber_InPlaceAdd(PyObject *v, PyObject *w)
if (PyInstance_Check(v)) {
if (PyInstance_HalfBinOp(v, w, "__iadd__", &x,
PyNumber_Add, 0) <= 0)
PyNumber_Add, 0) <= 0)
return x;
}
else if (HASINPLACE(v)
&& ((v->ob_type->tp_as_sequence != NULL &&
(f = v->ob_type->tp_as_sequence->sq_inplace_concat)
!= NULL)
|| (v->ob_type->tp_as_number != NULL &&
(f = v->ob_type->tp_as_number->nb_inplace_add) != NULL)))
return (*f)(v, w);
else if (HASINPLACE(v)) {
if (v->ob_type->tp_as_sequence != NULL)
f = v->ob_type->tp_as_sequence->sq_inplace_concat;
if (f == NULL && v->ob_type->tp_as_number != NULL)
f = v->ob_type->tp_as_number->nb_inplace_add;
if (f != NULL)
return (*f)(v, w);
}
BINOP(v, w, "__add__", "__radd__", PyNumber_Add);
if (v->ob_type->tp_as_sequence != NULL &&
(f = v->ob_type->tp_as_sequence->sq_concat) != NULL)
return (*f)(v, w);
else if (v->ob_type->tp_as_number != NULL) {
if (v->ob_type->tp_as_sequence != NULL) {
f = v->ob_type->tp_as_sequence->sq_concat;
if (f != NULL)
return (*f)(v, w);
}
if (v->ob_type->tp_as_number != NULL) {
if (PyNumber_Coerce(&v, &w) != 0)
return NULL;
if (v->ob_type->tp_as_number != NULL &&
(f = v->ob_type->tp_as_number->nb_add) != NULL)
x = (*f)(v, w);
if (v->ob_type->tp_as_number != NULL) {
f = v->ob_type->tp_as_number->nb_add;
if (f != NULL)
x = (*f)(v, w);
}
Py_DECREF(v);
Py_DECREF(w);
if (f != NULL)