diff options
Diffstat (limited to 'Objects/abstract.c')
| -rw-r--r-- | Objects/abstract.c | 43 |
1 files changed, 4 insertions, 39 deletions
diff --git a/Objects/abstract.c b/Objects/abstract.c index ee137fe..79dfe40 100644 --- a/Objects/abstract.c +++ b/Objects/abstract.c @@ -339,8 +339,6 @@ PyNumber_Check(PyObject *o) /* Binary operators */ -/* New style number protocol support */ - #define NB_SLOT(x) offsetof(PyNumberMethods, x) #define NB_BINOP(nb_methods, slot) \ (*(binaryfunc*)(& ((char*)nb_methods)[slot])) @@ -350,23 +348,11 @@ PyNumber_Check(PyObject *o) /* Calling scheme used for binary operations: - v w Action - ------------------------------------------------------------------- - new new w.op(v,w)[*], v.op(v,w), w.op(v,w) - new old v.op(v,w), coerce(v,w), v.op(v,w) - old new w.op(v,w), coerce(v,w), v.op(v,w) - old old coerce(v,w), v.op(v,w) + Order operations are tried until either a valid result or error: + w.op(v,w)[*], v.op(v,w), w.op(v,w) [*] only when v->ob_type != w->ob_type && w->ob_type is a subclass of v->ob_type - - Legend: - ------- - * new == new style number - * old == old style number - * Action indicates the order in which operations are tried until either - a valid result is produced or an error occurs. - */ static PyObject * @@ -434,29 +420,8 @@ binary_op(PyObject *v, PyObject *w, const int op_slot, const char *op_name) /* Calling scheme used for ternary operations: - *** In some cases, w.op is called before v.op; see binary_op1. *** - - v w z Action - ------------------------------------------------------------------- - new new new v.op(v,w,z), w.op(v,w,z), z.op(v,w,z) - new old new v.op(v,w,z), z.op(v,w,z), coerce(v,w,z), v.op(v,w,z) - old new new w.op(v,w,z), z.op(v,w,z), coerce(v,w,z), v.op(v,w,z) - old old new z.op(v,w,z), coerce(v,w,z), v.op(v,w,z) - new new old v.op(v,w,z), w.op(v,w,z), coerce(v,w,z), v.op(v,w,z) - new old old v.op(v,w,z), coerce(v,w,z), v.op(v,w,z) - old new old w.op(v,w,z), coerce(v,w,z), v.op(v,w,z) - old old old coerce(v,w,z), v.op(v,w,z) - - Legend: - ------- - * new == new style number - * old == old style number - * Action indicates the order in which operations are tried until either - a valid result is produced or an error occurs. - * coerce(v,w,z) actually does: coerce(v,w), coerce(v,z), coerce(w,z) and - only if z != Py_None; if z == Py_None, then it is treated as absent - variable and only coerce(v,w) is tried. - + Order operations are tried until either a valid result or error: + v.op(v,w,z), w.op(v,w,z), z.op(v,w,z) */ static PyObject * |