79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* SPDX-FileCopyrightText: Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include <assert.h>
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#include "py/objtuple.h"
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#include "py/runtime.h"
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typedef struct _mp_obj_zip_t {
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mp_obj_base_t base;
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size_t n_iters;
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mp_obj_t iters[];
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} mp_obj_zip_t;
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STATIC mp_obj_t zip_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
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mp_arg_check_num(n_args, n_kw, 0, MP_OBJ_FUN_ARGS_MAX, false);
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mp_obj_zip_t *o = mp_obj_malloc_var(mp_obj_zip_t, mp_obj_t, n_args, type);
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o->n_iters = n_args;
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for (size_t i = 0; i < n_args; i++) {
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o->iters[i] = mp_getiter(args[i], NULL);
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}
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return MP_OBJ_FROM_PTR(o);
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}
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STATIC mp_obj_t zip_iternext(mp_obj_t self_in) {
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mp_check_self(mp_obj_is_type(self_in, &mp_type_zip));
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mp_obj_zip_t *self = MP_OBJ_TO_PTR(self_in);
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if (self->n_iters == 0) {
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return MP_OBJ_STOP_ITERATION;
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}
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mp_obj_tuple_t *tuple = MP_OBJ_TO_PTR(mp_obj_new_tuple(self->n_iters, NULL));
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for (size_t i = 0; i < self->n_iters; i++) {
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mp_obj_t next = mp_iternext(self->iters[i]);
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if (next == MP_OBJ_STOP_ITERATION) {
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mp_obj_tuple_del(MP_OBJ_FROM_PTR(tuple));
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return MP_OBJ_STOP_ITERATION;
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}
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tuple->items[i] = next;
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}
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return MP_OBJ_FROM_PTR(tuple);
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}
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const mp_obj_type_t mp_type_zip = {
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{ &mp_type_type },
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.flags = MP_TYPE_FLAG_EXTENDED,
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.name = MP_QSTR_zip,
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.make_new = zip_make_new,
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MP_TYPE_EXTENDED_FIELDS(
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.getiter = mp_identity_getiter,
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.iternext = zip_iternext,
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),
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};
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