1 /*
2 * This file is part of the MicroPython project, http://micropython.org/
3 *
4 * The MIT License (MIT)
5 *
6 * Copyright (c) 2013, 2014 Damien P. George
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 */
26
27 #include <stdlib.h>
28
29 #include "py/obj.h"
30
31 #if !MICROPY_OBJ_IMMEDIATE_OBJS
32 typedef struct _mp_obj_none_t {
33 mp_obj_base_t base;
34 } mp_obj_none_t;
35 #endif
36
none_print(const mp_print_t * print,mp_obj_t self_in,mp_print_kind_t kind)37 STATIC void none_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
38 (void)self_in;
39 if (MICROPY_PY_UJSON && kind == PRINT_JSON) {
40 mp_print_str(print, "null");
41 } else {
42 mp_print_str(print, "None");
43 }
44 }
45
46 const mp_obj_type_t mp_type_NoneType = {
47 { &mp_type_type },
48 .name = MP_QSTR_NoneType,
49 .print = none_print,
50 .unary_op = mp_generic_unary_op,
51 };
52
53 #if !MICROPY_OBJ_IMMEDIATE_OBJS
54 const mp_obj_none_t mp_const_none_obj = {{&mp_type_NoneType}};
55 #endif
56