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objtype: Fix passing of class param to inherited classmethods.

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This is getting more and more tangled, but that's old news.
This commit is contained in:
Paul Sokolovsky 2014-06-08 22:28:44 +03:00
parent 639863d36e
commit 195de3247b
2 changed files with 27 additions and 3 deletions
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18
py/objtype.c
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@ -103,6 +103,7 @@ struct class_lookup_data {
qstr attr; qstr attr;
machine_uint_t meth_offset; machine_uint_t meth_offset;
mp_obj_t *dest; mp_obj_t *dest;
bool is_type;
}; };
STATIC void mp_obj_class_lookup(struct class_lookup_data *lookup, const mp_obj_type_t *type) { STATIC void mp_obj_class_lookup(struct class_lookup_data *lookup, const mp_obj_type_t *type) {
@ -128,18 +129,28 @@ STATIC void mp_obj_class_lookup(struct class_lookup_data *lookup, const mp_obj_
mp_map_elem_t *elem = mp_map_lookup(locals_map, MP_OBJ_NEW_QSTR(lookup->attr), MP_MAP_LOOKUP); mp_map_elem_t *elem = mp_map_lookup(locals_map, MP_OBJ_NEW_QSTR(lookup->attr), MP_MAP_LOOKUP);
if (elem != NULL) { if (elem != NULL) {
lookup->dest[0] = elem->value; lookup->dest[0] = elem->value;
if (lookup->obj != MP_OBJ_NULL && is_native_type(type)) { if (lookup->is_type) {
// If we look up class method, we need to pass original type there,
// not type where we found a class method.
const mp_obj_type_t *org_type = (const mp_obj_type_t*)lookup->obj;
instance_convert_return_attr(NULL, org_type, elem->value, lookup->dest);
} else if (lookup->obj != MP_OBJ_NULL && !lookup->is_type && is_native_type(type)) {
instance_convert_return_attr(lookup->obj->subobj[0], type, elem->value, lookup->dest); instance_convert_return_attr(lookup->obj->subobj[0], type, elem->value, lookup->dest);
} else { } else {
instance_convert_return_attr(lookup->obj, type, elem->value, lookup->dest); instance_convert_return_attr(lookup->obj, type, elem->value, lookup->dest);
} }
#if DEBUG_PRINT
printf("mp_obj_class_lookup: Returning: ");
mp_obj_print(lookup->dest[0], PRINT_REPR); printf(" ");
mp_obj_print(lookup->dest[1], PRINT_REPR); printf("\n");
#endif
return; return;
} }
} }
// Try this for completeness, but all native methods should be statically defined // Try this for completeness, but all native methods should be statically defined
// in locals_dict, and would be handled by above. // in locals_dict, and would be handled by above.
if (lookup->obj != MP_OBJ_NULL && is_native_type(type)) { if (lookup->obj != MP_OBJ_NULL && !lookup->is_type && is_native_type(type)) {
mp_load_method_maybe(lookup->obj->subobj[0], lookup->attr, lookup->dest); mp_load_method_maybe(lookup->obj->subobj[0], lookup->attr, lookup->dest);
if (lookup->dest[0] != MP_OBJ_NULL) { if (lookup->dest[0] != MP_OBJ_NULL) {
return; return;
@ -672,10 +683,11 @@ STATIC void type_load_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
} }
#endif #endif
struct class_lookup_data lookup = { struct class_lookup_data lookup = {
.obj = NULL, .obj = self_in,
.attr = attr, .attr = attr,
.meth_offset = 0, .meth_offset = 0,
.dest = dest, .dest = dest,
.is_type = true,
}; };
mp_obj_class_lookup(&lookup, self); mp_obj_class_lookup(&lookup, self);
} }

12
tests/basics/subclass_classmethod.py Normal file
View File

@ -0,0 +1,12 @@
# Calling an inherited classmethod
class Base:
@classmethod
def foo(cls):
print(cls.__name__)
class Sub(Base):
pass
Sub.foo()