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runtime.c: Fix reading properties 

.. this fixes the vfs_fat_ramdisk failure.
This commit is contained in:
Jeff Epler 2021-05-05 09:37:41 -05:00
parent c3ce2bacde
commit 8fae7d2e30
1 changed files with 17 additions and 17 deletions
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34
py/runtime.c
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@ -1062,27 +1062,27 @@ void mp_convert_member_lookup(mp_obj_t self, const mp_obj_type_t *type, mp_obj_t
}
dest[0] = ((mp_obj_static_class_method_t *)MP_OBJ_TO_PTR(member))->fun;
dest[1] = MP_OBJ_FROM_PTR(type);
#if MICROPY_PY_BUILTINS_PROPERTY
// If self is MP_OBJ_NULL, we looking at the class itself, not an instance.
} else if (mp_obj_is_type(member, &mp_type_property) && mp_obj_is_native_type(type) && self != MP_OBJ_NULL) {
// object member is a property; delegate the load to the property
// Note: This is an optimisation for code size and execution time.
// The proper way to do it is have the functionality just below
// in a __get__ method of the property object, and then it would
// be called by the descriptor code down below. But that way
// requires overhead for the nested mp_call's and overhead for
// the code.
const mp_obj_t *proxy = mp_obj_property_get(member);
if (proxy[0] == mp_const_none) {
mp_raise_AttributeError(translate("unreadable attribute"));
} else {
dest[0] = mp_call_function_n_kw(proxy[0], 1, 0, &self);
}
#endif
} else {
// `member` is a value, so just return that value.
dest[0] = member;
}
#if MICROPY_PY_BUILTINS_PROPERTY
// If self is MP_OBJ_NULL, we looking at the class itself, not an instance.
} else if (mp_obj_is_type(member, &mp_type_property) && mp_obj_is_native_type(type) && self != MP_OBJ_NULL) {
// object member is a property; delegate the load to the property
// Note: This is an optimisation for code size and execution time.
// The proper way to do it is have the functionality just below
// in a __get__ method of the property object, and then it would
// be called by the descriptor code down below. But that way
// requires overhead for the nested mp_call's and overhead for
// the code.
const mp_obj_t *proxy = mp_obj_property_get(member);
if (proxy[0] == mp_const_none) {
mp_raise_AttributeError(translate("unreadable attribute"));
} else {
dest[0] = mp_call_function_n_kw(proxy[0], 1, 0, &self);
}
#endif
} else {
// `member` is a value, so just return that value.
dest[0] = member;