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micropython/py/objlist.c
Angus Gratton decf8e6a8b all: Remove the "STATIC" macro and just use "static" instead. 
The STATIC macro was introduced a very long time ago in commit
d5df6cd44a.  The original reason for this was
to have the option to define it to nothing so that all static functions
become global functions and therefore visible to certain debug tools, so
one could do function size comparison and other things.

This STATIC feature is rarely (if ever) used.  And with the use of LTO and
heavy inline optimisation, analysing the size of individual functions when
they are not static is not a good representation of the size of code when
fully optimised.

So the macro does not have much use and it's simpler to just remove it.
Then you know exactly what it's doing.  For example, newcomers don't have
to learn what the STATIC macro is and why it exists.  Reading the code is
also less "loud" with a lowercase static.

One other minor point in favour of removing it, is that it stops bugs with
`STATIC inline`, which should always be `static inline`.

Methodology for this commit was:

1) git ls-files | egrep '\.[ch]$' | \
   xargs sed -Ei "s/(^| )STATIC($| )/\1static\2/"

2) Do some manual cleanup in the diff by searching for the word STATIC in
   comments and changing those back.

3) "git-grep STATIC docs/", manually fixed those cases.

4) "rg -t python STATIC", manually fixed codegen lines that used STATIC.

This work was funded through GitHub Sponsors.

Signed-off-by: Angus Gratton <angus@redyak.com.au>
2024-03-07 14:20:42 +11:00

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <string.h>
#include <assert.h>
#include "py/objlist.h"
#include "py/runtime.h"
#include "py/stackctrl.h"
static mp_obj_t mp_obj_new_list_iterator(mp_obj_t list, size_t cur, mp_obj_iter_buf_t *iter_buf);
static mp_obj_list_t *list_new(size_t n);
static mp_obj_t list_extend(mp_obj_t self_in, mp_obj_t arg_in);
static mp_obj_t list_pop(size_t n_args, const mp_obj_t *args);
// TODO: Move to mpconfig.h
#define LIST_MIN_ALLOC 4
/******************************************************************************/
/* list */
static void list_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
mp_obj_list_t *o = MP_OBJ_TO_PTR(o_in);
const char *item_separator = ", ";
if (!(MICROPY_PY_JSON && kind == PRINT_JSON)) {
kind = PRINT_REPR;
} else {
#if MICROPY_PY_JSON_SEPARATORS
item_separator = MP_PRINT_GET_EXT(print)->item_separator;
#endif
}
mp_print_str(print, "[");
for (size_t i = 0; i < o->len; i++) {
if (i > 0) {
mp_print_str(print, item_separator);
}
mp_obj_print_helper(print, o->items[i], kind);
}
mp_print_str(print, "]");
}
static mp_obj_t list_extend_from_iter(mp_obj_t list, mp_obj_t iterable) {
mp_obj_t iter = mp_getiter(iterable, NULL);
mp_obj_t item;
while ((item = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) {
mp_obj_list_append(list, item);
}
return list;
}
mp_obj_t mp_obj_list_make_new(const mp_obj_type_t *type_in, size_t n_args, size_t n_kw, const mp_obj_t *args) {
(void)type_in;
mp_arg_check_num(n_args, n_kw, 0, 1, false);
switch (n_args) {
case 0:
// return a new, empty list
return mp_obj_new_list(0, NULL);
case 1:
default: {
// make list from iterable
// TODO: optimize list/tuple
mp_obj_t list = mp_obj_new_list(0, NULL);
return list_extend_from_iter(list, args[0]);
}
}
}
static mp_obj_t list_unary_op(mp_unary_op_t op, mp_obj_t self_in) {
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
switch (op) {
case MP_UNARY_OP_BOOL:
return mp_obj_new_bool(self->len != 0);
case MP_UNARY_OP_LEN:
return MP_OBJ_NEW_SMALL_INT(self->len);
#if MICROPY_PY_SYS_GETSIZEOF
case MP_UNARY_OP_SIZEOF: {
size_t sz = sizeof(*self) + sizeof(mp_obj_t) * self->alloc;
return MP_OBJ_NEW_SMALL_INT(sz);
}
#endif
default:
return MP_OBJ_NULL; // op not supported
}
}
static mp_obj_t list_binary_op(mp_binary_op_t op, mp_obj_t lhs, mp_obj_t rhs) {
mp_obj_list_t *o = MP_OBJ_TO_PTR(lhs);
switch (op) {
case MP_BINARY_OP_ADD: {
if (!mp_obj_is_type(rhs, &mp_type_list)) {
return MP_OBJ_NULL; // op not supported
}
mp_obj_list_t *p = MP_OBJ_TO_PTR(rhs);
mp_obj_list_t *s = list_new(o->len + p->len);
mp_seq_cat(s->items, o->items, o->len, p->items, p->len, mp_obj_t);
return MP_OBJ_FROM_PTR(s);
}
case MP_BINARY_OP_INPLACE_ADD: {
list_extend(lhs, rhs);
return lhs;
}
case MP_BINARY_OP_MULTIPLY: {
mp_int_t n;
if (!mp_obj_get_int_maybe(rhs, &n)) {
return MP_OBJ_NULL; // op not supported
}
if (n < 0) {
n = 0;
}
mp_obj_list_t *s = list_new(o->len * n);
mp_seq_multiply(o->items, sizeof(*o->items), o->len, n, s->items);
return MP_OBJ_FROM_PTR(s);
}
case MP_BINARY_OP_EQUAL:
case MP_BINARY_OP_LESS:
case MP_BINARY_OP_LESS_EQUAL:
case MP_BINARY_OP_MORE:
case MP_BINARY_OP_MORE_EQUAL: {
if (!mp_obj_is_type(rhs, &mp_type_list)) {
if (op == MP_BINARY_OP_EQUAL) {
return mp_const_false;
}
return MP_OBJ_NULL; // op not supported
}
mp_obj_list_t *another = MP_OBJ_TO_PTR(rhs);
bool res = mp_seq_cmp_objs(op, o->items, o->len, another->items, another->len);
return mp_obj_new_bool(res);
}
default:
return MP_OBJ_NULL; // op not supported
}
}
static mp_obj_t list_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
if (value == MP_OBJ_NULL) {
// delete
#if MICROPY_PY_BUILTINS_SLICE
if (mp_obj_is_type(index, &mp_type_slice)) {
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
mp_bound_slice_t slice;
if (!mp_seq_get_fast_slice_indexes(self->len, index, &slice)) {
mp_raise_NotImplementedError(NULL);
}
mp_int_t len_adj = slice.start - slice.stop;
assert(len_adj <= 0);
mp_seq_replace_slice_no_grow(self->items, self->len, slice.start, slice.stop, self->items /*NULL*/, 0, sizeof(*self->items));
// Clear "freed" elements at the end of list
mp_seq_clear(self->items, self->len + len_adj, self->len, sizeof(*self->items));
self->len += len_adj;
return mp_const_none;
}
#endif
mp_obj_t args[2] = {self_in, index};
list_pop(2, args);
return mp_const_none;
} else if (value == MP_OBJ_SENTINEL) {
// load
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
#if MICROPY_PY_BUILTINS_SLICE
if (mp_obj_is_type(index, &mp_type_slice)) {
mp_bound_slice_t slice;
if (!mp_seq_get_fast_slice_indexes(self->len, index, &slice)) {
return mp_seq_extract_slice(self->len, self->items, &slice);
}
mp_obj_list_t *res = list_new(slice.stop - slice.start);
mp_seq_copy(res->items, self->items + slice.start, res->len, mp_obj_t);
return MP_OBJ_FROM_PTR(res);
}
#endif
size_t index_val = mp_get_index(self->base.type, self->len, index, false);
return self->items[index_val];
} else {
#if MICROPY_PY_BUILTINS_SLICE
if (mp_obj_is_type(index, &mp_type_slice)) {
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
size_t value_len;
mp_obj_t *value_items;
mp_obj_get_array(value, &value_len, &value_items);
mp_bound_slice_t slice_out;
if (!mp_seq_get_fast_slice_indexes(self->len, index, &slice_out)) {
mp_raise_NotImplementedError(NULL);
}
mp_int_t len_adj = value_len - (slice_out.stop - slice_out.start);
if (len_adj > 0) {
if (self->len + len_adj > self->alloc) {
// TODO: Might optimize memory copies here by checking if block can
// be grown inplace or not
self->items = m_renew(mp_obj_t, self->items, self->alloc, self->len + len_adj);
self->alloc = self->len + len_adj;
}
mp_seq_replace_slice_grow_inplace(self->items, self->len,
slice_out.start, slice_out.stop, value_items, value_len, len_adj, sizeof(*self->items));
} else {
mp_seq_replace_slice_no_grow(self->items, self->len,
slice_out.start, slice_out.stop, value_items, value_len, sizeof(*self->items));
// Clear "freed" elements at the end of list
mp_seq_clear(self->items, self->len + len_adj, self->len, sizeof(*self->items));
// TODO: apply allocation policy re: alloc_size
}
self->len += len_adj;
return mp_const_none;
}
#endif
mp_obj_list_store(self_in, index, value);
return mp_const_none;
}
}
static mp_obj_t list_getiter(mp_obj_t o_in, mp_obj_iter_buf_t *iter_buf) {
return mp_obj_new_list_iterator(o_in, 0, iter_buf);
}
mp_obj_t mp_obj_list_append(mp_obj_t self_in, mp_obj_t arg) {
mp_check_self(mp_obj_is_type(self_in, &mp_type_list));
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
if (self->len >= self->alloc) {
self->items = m_renew(mp_obj_t, self->items, self->alloc, self->alloc * 2);
self->alloc *= 2;
mp_seq_clear(self->items, self->len + 1, self->alloc, sizeof(*self->items));
}
self->items[self->len++] = arg;
return mp_const_none; // return None, as per CPython
}
static mp_obj_t list_extend(mp_obj_t self_in, mp_obj_t arg_in) {
mp_check_self(mp_obj_is_type(self_in, &mp_type_list));
if (mp_obj_is_type(arg_in, &mp_type_list)) {
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
mp_obj_list_t *arg = MP_OBJ_TO_PTR(arg_in);
if (self->len + arg->len > self->alloc) {
// TODO: use alloc policy for "4"
self->items = m_renew(mp_obj_t, self->items, self->alloc, self->len + arg->len + 4);
self->alloc = self->len + arg->len + 4;
mp_seq_clear(self->items, self->len + arg->len, self->alloc, sizeof(*self->items));
}
memcpy(self->items + self->len, arg->items, sizeof(mp_obj_t) * arg->len);
self->len += arg->len;
} else {
list_extend_from_iter(self_in, arg_in);
}
return mp_const_none; // return None, as per CPython
}
static mp_obj_t list_pop(size_t n_args, const mp_obj_t *args) {
mp_check_self(mp_obj_is_type(args[0], &mp_type_list));
mp_obj_list_t *self = MP_OBJ_TO_PTR(args[0]);
if (self->len == 0) {
mp_raise_msg(&mp_type_IndexError, MP_ERROR_TEXT("pop from empty list"));
}
size_t index = mp_get_index(self->base.type, self->len, n_args == 1 ? MP_OBJ_NEW_SMALL_INT(-1) : args[1], false);
mp_obj_t ret = self->items[index];
self->len -= 1;
memmove(self->items + index, self->items + index + 1, (self->len - index) * sizeof(mp_obj_t));
// Clear stale pointer from slot which just got freed to prevent GC issues
self->items[self->len] = MP_OBJ_NULL;
if (self->alloc > LIST_MIN_ALLOC && self->alloc > 2 * self->len) {
self->items = m_renew(mp_obj_t, self->items, self->alloc, self->alloc / 2);
self->alloc /= 2;
}
return ret;
}
static void mp_quicksort(mp_obj_t *head, mp_obj_t *tail, mp_obj_t key_fn, mp_obj_t binop_less_result) {
MP_STACK_CHECK();
while (head < tail) {
mp_obj_t *h = head - 1;
mp_obj_t *t = tail;
mp_obj_t v = key_fn == MP_OBJ_NULL ? tail[0] : mp_call_function_1(key_fn, tail[0]); // get pivot using key_fn
for (;;) {
do {++h;
} while (h < t && mp_binary_op(MP_BINARY_OP_LESS, key_fn == MP_OBJ_NULL ? h[0] : mp_call_function_1(key_fn, h[0]), v) == binop_less_result);
do {--t;
} while (h < t && mp_binary_op(MP_BINARY_OP_LESS, v, key_fn == MP_OBJ_NULL ? t[0] : mp_call_function_1(key_fn, t[0])) == binop_less_result);
if (h >= t) {
break;
}
mp_obj_t x = h[0];
h[0] = t[0];
t[0] = x;
}
mp_obj_t x = h[0];
h[0] = tail[0];
tail[0] = x;
// do the smaller recursive call first, to keep stack within O(log(N))
if (t - head < tail - h - 1) {
mp_quicksort(head, t, key_fn, binop_less_result);
head = h + 1;
} else {
mp_quicksort(h + 1, tail, key_fn, binop_less_result);
tail = t;
}
}
}
// TODO Python defines sort to be stable but ours is not
mp_obj_t mp_obj_list_sort(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_key, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_rom_obj = MP_ROM_NONE} },
{ MP_QSTR_reverse, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
};
// parse args
struct {
mp_arg_val_t key, reverse;
} args;
mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args,
MP_ARRAY_SIZE(allowed_args), allowed_args, (mp_arg_val_t *)&args);
mp_check_self(mp_obj_is_type(pos_args[0], &mp_type_list));
mp_obj_list_t *self = MP_OBJ_TO_PTR(pos_args[0]);
if (self->len > 1) {
mp_quicksort(self->items, self->items + self->len - 1,
args.key.u_obj == mp_const_none ? MP_OBJ_NULL : args.key.u_obj,
args.reverse.u_bool ? mp_const_false : mp_const_true);
}
return mp_const_none;
}
static mp_obj_t list_clear(mp_obj_t self_in) {
mp_check_self(mp_obj_is_type(self_in, &mp_type_list));
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
self->len = 0;
self->items = m_renew(mp_obj_t, self->items, self->alloc, LIST_MIN_ALLOC);
self->alloc = LIST_MIN_ALLOC;
mp_seq_clear(self->items, 0, self->alloc, sizeof(*self->items));
return mp_const_none;
}
static mp_obj_t list_copy(mp_obj_t self_in) {
mp_check_self(mp_obj_is_type(self_in, &mp_type_list));
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
return mp_obj_new_list(self->len, self->items);
}
static mp_obj_t list_count(mp_obj_t self_in, mp_obj_t value) {
mp_check_self(mp_obj_is_type(self_in, &mp_type_list));
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
return mp_seq_count_obj(self->items, self->len, value);
}
static mp_obj_t list_index(size_t n_args, const mp_obj_t *args) {
mp_check_self(mp_obj_is_type(args[0], &mp_type_list));
mp_obj_list_t *self = MP_OBJ_TO_PTR(args[0]);
return mp_seq_index_obj(self->items, self->len, n_args, args);
}
static mp_obj_t list_insert(mp_obj_t self_in, mp_obj_t idx, mp_obj_t obj) {
mp_check_self(mp_obj_is_type(self_in, &mp_type_list));
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
// insert has its own strange index logic
mp_int_t index = MP_OBJ_SMALL_INT_VALUE(idx);
if (index < 0) {
index += self->len;
}
if (index < 0) {
index = 0;
}
if ((size_t)index > self->len) {
index = self->len;
}
mp_obj_list_append(self_in, mp_const_none);
for (mp_int_t i = self->len - 1; i > index; i--) {
self->items[i] = self->items[i - 1];
}
self->items[index] = obj;
return mp_const_none;
}
mp_obj_t mp_obj_list_remove(mp_obj_t self_in, mp_obj_t value) {
mp_check_self(mp_obj_is_type(self_in, &mp_type_list));
mp_obj_t args[] = {self_in, value};
args[1] = list_index(2, args);
list_pop(2, args);
return mp_const_none;
}
static mp_obj_t list_reverse(mp_obj_t self_in) {
mp_check_self(mp_obj_is_type(self_in, &mp_type_list));
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
mp_int_t len = self->len;
for (mp_int_t i = 0; i < len / 2; i++) {
mp_obj_t a = self->items[i];
self->items[i] = self->items[len - i - 1];
self->items[len - i - 1] = a;
}
return mp_const_none;
}
static MP_DEFINE_CONST_FUN_OBJ_2(list_append_obj, mp_obj_list_append);
static MP_DEFINE_CONST_FUN_OBJ_2(list_extend_obj, list_extend);
static MP_DEFINE_CONST_FUN_OBJ_1(list_clear_obj, list_clear);
static MP_DEFINE_CONST_FUN_OBJ_1(list_copy_obj, list_copy);
static MP_DEFINE_CONST_FUN_OBJ_2(list_count_obj, list_count);
static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(list_index_obj, 2, 4, list_index);
static MP_DEFINE_CONST_FUN_OBJ_3(list_insert_obj, list_insert);
static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(list_pop_obj, 1, 2, list_pop);
static MP_DEFINE_CONST_FUN_OBJ_2(list_remove_obj, mp_obj_list_remove);
static MP_DEFINE_CONST_FUN_OBJ_1(list_reverse_obj, list_reverse);
static MP_DEFINE_CONST_FUN_OBJ_KW(list_sort_obj, 1, mp_obj_list_sort);
static const mp_rom_map_elem_t list_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_append), MP_ROM_PTR(&list_append_obj) },
{ MP_ROM_QSTR(MP_QSTR_clear), MP_ROM_PTR(&list_clear_obj) },
{ MP_ROM_QSTR(MP_QSTR_copy), MP_ROM_PTR(&list_copy_obj) },
{ MP_ROM_QSTR(MP_QSTR_count), MP_ROM_PTR(&list_count_obj) },
{ MP_ROM_QSTR(MP_QSTR_extend), MP_ROM_PTR(&list_extend_obj) },
{ MP_ROM_QSTR(MP_QSTR_index), MP_ROM_PTR(&list_index_obj) },
{ MP_ROM_QSTR(MP_QSTR_insert), MP_ROM_PTR(&list_insert_obj) },
{ MP_ROM_QSTR(MP_QSTR_pop), MP_ROM_PTR(&list_pop_obj) },
{ MP_ROM_QSTR(MP_QSTR_remove), MP_ROM_PTR(&list_remove_obj) },
{ MP_ROM_QSTR(MP_QSTR_reverse), MP_ROM_PTR(&list_reverse_obj) },
{ MP_ROM_QSTR(MP_QSTR_sort), MP_ROM_PTR(&list_sort_obj) },
};
static MP_DEFINE_CONST_DICT(list_locals_dict, list_locals_dict_table);
MP_DEFINE_CONST_OBJ_TYPE(
mp_type_list,
MP_QSTR_list,
MP_TYPE_FLAG_ITER_IS_GETITER,
make_new, mp_obj_list_make_new,
print, list_print,
unary_op, list_unary_op,
binary_op, list_binary_op,
subscr, list_subscr,
iter, list_getiter,
locals_dict, &list_locals_dict
);
void mp_obj_list_init(mp_obj_list_t *o, size_t n) {
o->base.type = &mp_type_list;
o->alloc = n < LIST_MIN_ALLOC ? LIST_MIN_ALLOC : n;
o->len = n;
o->items = m_new(mp_obj_t, o->alloc);
mp_seq_clear(o->items, n, o->alloc, sizeof(*o->items));
}
static mp_obj_list_t *list_new(size_t n) {
mp_obj_list_t *o = m_new_obj(mp_obj_list_t);
mp_obj_list_init(o, n);
return o;
}
mp_obj_t mp_obj_new_list(size_t n, mp_obj_t *items) {
mp_obj_list_t *o = list_new(n);
if (items != NULL) {
for (size_t i = 0; i < n; i++) {
o->items[i] = items[i];
}
}
return MP_OBJ_FROM_PTR(o);
}
void mp_obj_list_get(mp_obj_t self_in, size_t *len, mp_obj_t **items) {
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
*len = self->len;
*items = self->items;
}
void mp_obj_list_set_len(mp_obj_t self_in, size_t len) {
// trust that the caller knows what it's doing
// TODO realloc if len got much smaller than alloc
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
self->len = len;
}
void mp_obj_list_store(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
mp_obj_list_t *self = MP_OBJ_TO_PTR(self_in);
size_t i = mp_get_index(self->base.type, self->len, index, false);
self->items[i] = value;
}
/******************************************************************************/
/* list iterator */
typedef struct _mp_obj_list_it_t {
mp_obj_base_t base;
mp_fun_1_t iternext;
mp_obj_t list;
size_t cur;
} mp_obj_list_it_t;
static mp_obj_t list_it_iternext(mp_obj_t self_in) {
mp_obj_list_it_t *self = MP_OBJ_TO_PTR(self_in);
mp_obj_list_t *list = MP_OBJ_TO_PTR(self->list);
if (self->cur < list->len) {
mp_obj_t o_out = list->items[self->cur];
self->cur += 1;
return o_out;
} else {
return MP_OBJ_STOP_ITERATION;
}
}
mp_obj_t mp_obj_new_list_iterator(mp_obj_t list, size_t cur, mp_obj_iter_buf_t *iter_buf) {
assert(sizeof(mp_obj_list_it_t) <= sizeof(mp_obj_iter_buf_t));
mp_obj_list_it_t *o = (mp_obj_list_it_t *)iter_buf;
o->base.type = &mp_type_polymorph_iter;
o->iternext = list_it_iternext;
o->list = list;
o->cur = cur;
return MP_OBJ_FROM_PTR(o);
}
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