objnone.c 1.83 KB
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/*
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 * This file is part of the MicroPython project, http://micropython.org/
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 *
 * 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.
 */

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#include <stdlib.h>

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#include "py/obj.h"
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typedef struct _mp_obj_none_t {
    mp_obj_base_t base;
} mp_obj_none_t;

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STATIC void none_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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    (void)self_in;
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    #if MICROPY_PY_UJSON
    if (kind == PRINT_JSON) {
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        mp_print_str(print, "null");
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    } else
    #else
    (void)kind;
    #endif
    {
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        mp_print_str(print, "None");
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    }
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}

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const mp_obj_type_t mp_type_NoneType = {
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    { &mp_type_type },
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    .name = MP_QSTR_NoneType,
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    .print = none_print,
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    .unary_op = mp_generic_unary_op,
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};

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const mp_obj_none_t mp_const_none_obj = {{&mp_type_NoneType}};