From 12f13ee6346d8fd029fc2ecec06d50b5f7f6b252 Mon Sep 17 00:00:00 2001 From: Jeff Epler Date: Tue, 13 Aug 2019 07:07:49 -0500 Subject: [PATCH] py/objtuple: Allow compatible subclasses of tuple in mp_obj_tuple_get. As part of this patch a private macro mp_obj_is_tuple_compatible is introduced to encapsulate the check, which is used in two locations. Fixes #5005. --- py/objtuple.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/py/objtuple.c b/py/objtuple.c index 39eb94023..740e0795b 100644 --- a/py/objtuple.c +++ b/py/objtuple.c @@ -31,6 +31,9 @@ #include "py/objtuple.h" #include "py/runtime.h" +// type check is done on getiter method to allow tuple, namedtuple, attrtuple +#define mp_obj_is_tuple_compatible(o) (mp_obj_get_type(o)->getiter == mp_obj_tuple_getiter) + /******************************************************************************/ /* tuple */ @@ -101,8 +104,7 @@ STATIC mp_obj_t mp_obj_tuple_make_new(const mp_obj_type_t *type_in, size_t n_arg // Don't pass MP_BINARY_OP_NOT_EQUAL here STATIC mp_obj_t tuple_cmp_helper(mp_uint_t op, mp_obj_t self_in, mp_obj_t another_in) { - // type check is done on getiter method to allow tuple, namedtuple, attrtuple - mp_check_self(mp_obj_get_type(self_in)->getiter == mp_obj_tuple_getiter); + mp_check_self(mp_obj_is_tuple_compatible(self_in)); mp_obj_type_t *another_type = mp_obj_get_type(another_in); mp_obj_tuple_t *self = MP_OBJ_TO_PTR(self_in); if (another_type->getiter != mp_obj_tuple_getiter) { @@ -249,7 +251,7 @@ mp_obj_t mp_obj_new_tuple(size_t n, const mp_obj_t *items) { } void mp_obj_tuple_get(mp_obj_t self_in, size_t *len, mp_obj_t **items) { - assert(mp_obj_is_type(self_in, &mp_type_tuple)); + assert(mp_obj_is_tuple_compatible(self_in)); mp_obj_tuple_t *self = MP_OBJ_TO_PTR(self_in); *len = self->len; *items = &self->items[0];