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90 lines
3.4 KiB
90 lines
3.4 KiB
/*
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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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* Copyright (c) 2015 Paul Sokolovsky
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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 "py/runtime.h"
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// This is universal iterator type which calls "iternext" method stored in
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// particular object instance. (So, each instance of this time can have its
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// own iteration behavior.) Having this type saves to define type objects
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// for various internal iterator objects.
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// Any instance should have these 2 fields at the beginning
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typedef struct _mp_obj_polymorph_iter_t {
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mp_obj_base_t base;
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mp_fun_1_t iternext;
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} mp_obj_polymorph_iter_t;
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STATIC mp_obj_t polymorph_it_iternext(mp_obj_t self_in) {
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mp_obj_polymorph_iter_t *self = MP_OBJ_TO_PTR(self_in);
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// Redirect call to object instance's iternext method
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return self->iternext(self_in);
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}
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MP_DEFINE_CONST_OBJ_TYPE(
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mp_type_polymorph_iter,
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MP_QSTR_iterator,
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MP_TYPE_FLAG_NONE,
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MP_TYPE_NULL_MAKE_NEW,
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getiter, mp_identity_getiter,
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iternext, polymorph_it_iternext
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);
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#if MICROPY_ENABLE_FINALISER
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// mp_type_polymorph_iter_with_finaliser is a variant of the universal iterator
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// above which has a finaliser function attached. This function will be run when
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// the GC collects the iter object and can be used to close file handles etc.
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// Any instance should have these 3 fields at the beginning
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typedef struct _mp_obj_polymorph_iter_with_finaliser_t {
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mp_obj_base_t base;
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mp_fun_1_t iternext;
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mp_fun_1_t finaliser;
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} mp_obj_polymorph_with_finaliser_iter_t;
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STATIC mp_obj_t mp_obj_polymorph_iter_del(mp_obj_t self_in) {
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mp_obj_polymorph_with_finaliser_iter_t *self = MP_OBJ_TO_PTR(self_in);
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// Redirect call to object instance's finaliser method
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return self->finaliser(self_in);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_obj_polymorph_iter_del_obj, mp_obj_polymorph_iter_del);
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STATIC const mp_rom_map_elem_t mp_obj_polymorph_iter_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___del__), MP_ROM_PTR(&mp_obj_polymorph_iter_del_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(mp_obj_polymorph_iter_locals_dict, mp_obj_polymorph_iter_locals_dict_table);
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MP_DEFINE_CONST_OBJ_TYPE(
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mp_type_polymorph_iter_with_finaliser,
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MP_QSTR_iterator,
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MP_TYPE_FLAG_NONE,
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MP_TYPE_NULL_MAKE_NEW,
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getiter, mp_identity_getiter,
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iternext, polymorph_it_iternext,
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locals_dict, (mp_obj_dict_t *)&mp_obj_polymorph_iter_locals_dict
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);
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#endif
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