1/*
2 * This file is part of the MicroPython project, http://micropython.org/
3 *
4 * The MIT License (MIT)
5 *
6 * Copyright (c) 2016 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 <assert.h>
28#include <string.h>
29
30#include "py/obj.h"
31#include "py/mperrno.h"
32
33#if MICROPY_PY_UERRNO
34
35// This list can be defined per port in mpconfigport.h to tailor it to a
36// specific port's needs. If it's not defined then we provide a default.
37#ifndef MICROPY_PY_UERRNO_LIST
38#define MICROPY_PY_UERRNO_LIST \
39 X(EPERM) \
40 X(ENOENT) \
41 X(EIO) \
42 X(EBADF) \
43 X(EAGAIN) \
44 X(ENOMEM) \
45 X(EACCES) \
46 X(EEXIST) \
47 X(ENODEV) \
48 X(EISDIR) \
49 X(EINVAL) \
50 X(EOPNOTSUPP) \
51 X(EADDRINUSE) \
52 X(ECONNABORTED) \
53 X(ECONNRESET) \
54 X(ENOBUFS) \
55 X(ENOTCONN) \
56 X(ETIMEDOUT) \
57 X(ECONNREFUSED) \
58 X(EHOSTUNREACH) \
59 X(EALREADY) \
60 X(EINPROGRESS) \
61
62#endif
63
64#if MICROPY_PY_UERRNO_ERRORCODE
65STATIC const mp_rom_map_elem_t errorcode_table[] = {
66 #define X(e) { MP_ROM_INT(MP_##e), MP_ROM_QSTR(MP_QSTR_##e) },
67 MICROPY_PY_UERRNO_LIST
68#undef X
69};
70
71STATIC const mp_obj_dict_t errorcode_dict = {
72 .base = {&mp_type_dict},
73 .map = {
74 .all_keys_are_qstrs = 0, // keys are integers
75 .is_fixed = 1,
76 .is_ordered = 1,
77 .used = MP_ARRAY_SIZE(errorcode_table),
78 .alloc = MP_ARRAY_SIZE(errorcode_table),
79 .table = (mp_map_elem_t *)(mp_rom_map_elem_t *)errorcode_table,
80 },
81};
82#endif
83
84STATIC const mp_rom_map_elem_t mp_module_uerrno_globals_table[] = {
85 { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_uerrno) },
86 #if MICROPY_PY_UERRNO_ERRORCODE
87 { MP_ROM_QSTR(MP_QSTR_errorcode), MP_ROM_PTR(&errorcode_dict) },
88 #endif
89
90 #define X(e) { MP_ROM_QSTR(MP_QSTR_##e), MP_ROM_INT(MP_##e) },
91 MICROPY_PY_UERRNO_LIST
92#undef X
93};
94
95STATIC MP_DEFINE_CONST_DICT(mp_module_uerrno_globals, mp_module_uerrno_globals_table);
96
97const mp_obj_module_t mp_module_uerrno = {
98 .base = { &mp_type_module },
99 .globals = (mp_obj_dict_t *)&mp_module_uerrno_globals,
100};
101
102qstr mp_errno_to_str(mp_obj_t errno_val) {
103 #if MICROPY_PY_UERRNO_ERRORCODE
104 // We have the errorcode dict so can do a lookup using the hash map
105 mp_map_elem_t *elem = mp_map_lookup((mp_map_t *)&errorcode_dict.map, errno_val, MP_MAP_LOOKUP);
106 if (elem == NULL) {
107 return MP_QSTRnull;
108 } else {
109 return MP_OBJ_QSTR_VALUE(elem->value);
110 }
111 #else
112 // We don't have the errorcode dict so do a simple search in the modules dict
113 for (size_t i = 0; i < MP_ARRAY_SIZE(mp_module_uerrno_globals_table); ++i) {
114 if (errno_val == mp_module_uerrno_globals_table[i].value) {
115 return MP_OBJ_QSTR_VALUE(mp_module_uerrno_globals_table[i].key);
116 }
117 }
118 return MP_QSTRnull;
119 #endif
120}
121
122#endif // MICROPY_PY_UERRNO
123