text: /*
   * This file is part of the MicroPython project, http://micropython.org/
   *
   * The MIT License (MIT)
   *
   * SPDX-FileCopyrightText: 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 <stdlib.h>
  #include <assert.h>
  
  #include "py/runtime.h"
  
  typedef struct _mp_obj_map_t {
      mp_obj_base_t base;
      size_t n_iters;
      mp_obj_t fun;
      mp_obj_t iters[];
  } mp_obj_map_t;
  
  STATIC mp_obj_t map_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
      mp_arg_check_num(n_args, kw_args, 2, MP_OBJ_FUN_ARGS_MAX, false);
      mp_obj_map_t *o = m_new_obj_var(mp_obj_map_t, mp_obj_t, n_args - 1);
      o->base.type = type;
      o->n_iters = n_args - 1;
      o->fun = args[0];
      for (size_t i = 0; i < n_args - 1; i++) {
          o->iters[i] = mp_getiter(args[i + 1], NULL);
      }
      return MP_OBJ_FROM_PTR(o);
  }
  
  STATIC mp_obj_t map_iternext(mp_obj_t self_in) {
      mp_check_self(mp_obj_is_type(self_in, &mp_type_map));
      mp_obj_map_t *self = MP_OBJ_TO_PTR(self_in);
      mp_obj_t *nextses = m_new(mp_obj_t, self->n_iters);
  
      for (size_t i = 0; i < self->n_iters; i++) {
          mp_obj_t next = mp_iternext(self->iters[i]);
          if (next == MP_OBJ_STOP_ITERATION) {
              m_del(mp_obj_t, nextses, self->n_iters);
              return MP_OBJ_STOP_ITERATION;
          }
          nextses[i] = next;
      }
      return mp_call_function_n_kw(self->fun, self->n_iters, 0, nextses);
  }
  
  const mp_obj_type_t mp_type_map = {
      { &mp_type_type },
      .name = MP_QSTR_map,
      .make_new = map_make_new,
      .getiter = mp_identity_getiter,
      .iternext = map_iternext,
  };
  