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py: Add uerrno module, with errno constants and dict.
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‎py/builtin.h‎

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@@ -98,6 +98,7 @@ extern const mp_obj_module_t mp_module_gc;
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extern const mp_obj_dict_t mp_module_builtins_globals;
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// extmod modules
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extern const mp_obj_module_t mp_module_uerrno;
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extern const mp_obj_module_t mp_module_uctypes;
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extern const mp_obj_module_t mp_module_uzlib;
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extern const mp_obj_module_t mp_module_ujson;

‎py/moduerrno.c‎

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/*
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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) 2016 Damien P. George
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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 <assert.h>
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#include <string.h>
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#include "py/obj.h"
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#include "py/mperrno.h"
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#if MICROPY_PY_UERRNO
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#define ERRNO_LIST \
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X(EPERM) \
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X(ENOENT) \
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X(EIO) \
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X(EAGAIN) \
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X(ETIMEDOUT) \
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STATIC const mp_rom_map_elem_t errorcode_table[] = {
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#define X(e) { MP_ROM_INT(MP_ ## e), MP_ROM_QSTR(MP_QSTR_## e) },
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ERRNO_LIST
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#undef X
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};
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STATIC const mp_obj_dict_t errorcode_dict = {
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.base = {&mp_type_dict},
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.map = {
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.all_keys_are_qstrs = 0, // keys are integers
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.is_fixed = 1,
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.is_ordered = 1,
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.used = MP_ARRAY_SIZE(errorcode_table),
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.alloc = MP_ARRAY_SIZE(errorcode_table),
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.table = (mp_map_elem_t*)(mp_rom_map_elem_t*)errorcode_table,
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},
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};
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STATIC const mp_rom_map_elem_t mp_module_uerrno_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_uerrno) },
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{ MP_ROM_QSTR(MP_QSTR_errorcode), MP_ROM_PTR(&errorcode_dict) },
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#define X(e) { MP_ROM_QSTR(MP_QSTR_## e), MP_ROM_INT(MP_ ## e) },
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ERRNO_LIST
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#undef X
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};
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STATIC MP_DEFINE_CONST_DICT(mp_module_uerrno_globals, mp_module_uerrno_globals_table);
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const mp_obj_module_t mp_module_uerrno = {
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.base = { &mp_type_module },
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.name = MP_QSTR_uerrno,
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.globals = (mp_obj_dict_t*)&mp_module_uerrno_globals,
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};
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#endif //MICROPY_PY_UERRNO

‎py/mpconfig.h‎

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@@ -814,6 +814,11 @@ typedef double mp_float_t;
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#define MICROPY_PY_SYS_STDIO_BUFFER (0)
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#endif
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// Whether to provide "uerrno" module
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#ifndef MICROPY_PY_UERRNO
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#define MICROPY_PY_UERRNO (0)
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#endif
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// Extended modules
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#ifndef MICROPY_PY_UCTYPES

‎py/objmodule.c‎

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@@ -163,6 +163,9 @@ STATIC const mp_rom_map_elem_t mp_builtin_module_table[] = {
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// extmod modules
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#if MICROPY_PY_UERRNO
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{ MP_ROM_QSTR(MP_QSTR_uerrno), MP_ROM_PTR(&mp_module_uerrno) },
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#endif
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#if MICROPY_PY_UCTYPES
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{ MP_ROM_QSTR(MP_QSTR_uctypes), MP_ROM_PTR(&mp_module_uctypes) },
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#endif

‎py/py.mk‎

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@@ -160,6 +160,7 @@ PY_O_BASENAME = \
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modmicropython.o \
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modstruct.o \
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modsys.o \
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moduerrno.o \
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vm.o \
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bc.o \
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showbc.o \

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