diff options
| -rw-r--r-- | py/enum.c | 52 | ||||
| -rw-r--r-- | py/enum.h | 65 | ||||
| -rw-r--r-- | py/py.mk | 1 |
3 files changed, 118 insertions, 0 deletions
diff --git a/py/enum.c b/py/enum.c new file mode 100644 index 000000000..02a85a168 --- /dev/null +++ b/py/enum.c @@ -0,0 +1,52 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * SPDX-FileCopyrightText: Copyright (c) 2020 Jeff Epler for Adafruit Industries + * + * 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. + */ + +#include "py/enum.h" +#include "py/runtime.h" + +mp_obj_t cp_enum_find(const mp_obj_type_t *type, int value) { + const mp_obj_dict_t *dict = type->locals_dict; + for (size_t i=0; i<dict->map.used; i++) { + const cp_enum_obj_t *v = dict->map.table[i].value; + if (v->value == value) { + return (mp_obj_t)v; + } + } + return mp_const_none; +} + +int cp_enum_value(const mp_obj_type_t *type, mp_obj_t *obj) { + if (!MP_OBJ_IS_TYPE(obj, type)) { + mp_raise_TypeError_varg(translate("Expected a %q"), type->name); + } + return ((cp_enum_obj_t*)MP_OBJ_TO_PTR(obj))->value; +} + +void cp_enum_obj_print_helper(uint16_t module, const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) { + (void) kind; + cp_enum_obj_t *self = self_in; + mp_printf(print, "%q.%q.%q", module, self->base.type->name, self->name); +} diff --git a/py/enum.h b/py/enum.h new file mode 100644 index 000000000..1c38ae5ae --- /dev/null +++ b/py/enum.h @@ -0,0 +1,65 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * SPDX-FileCopyrightText: Copyright (c) 2020 Jeff Epler for Adafruit Industries + * + * 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. + */ + +#pragma once + +#include "py/obj.h" + +typedef struct { + mp_obj_base_t base; + int16_t value; + int16_t name; +} cp_enum_obj_t; + +#define MAKE_ENUM_VALUE(type, prefix, name, value) \ + STATIC const cp_enum_obj_t prefix ## _ ## name ## _obj = { \ + { &type }, value, MP_QSTR_ ## name, \ + } + +#define MAKE_ENUM_MAP(name) \ + STATIC const mp_rom_map_elem_t name ## _locals_table[] = + +#define MAKE_ENUM_MAP_ENTRY(prefix, name) \ + { MP_ROM_QSTR(MP_QSTR_ ## name), MP_ROM_PTR(&prefix ## _ ## name ## _obj) } + +#define MAKE_PRINTER(module, typename) \ + STATIC void typename ## _ ## print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) { \ + cp_enum_obj_print_helper(MP_QSTR_ ## module, print, self_in, kind); \ + } + +#define MAKE_ENUM_TYPE(module, type, typename) \ + const mp_obj_type_t typename ## _type = { \ + { &mp_type_type }, \ + .name = MP_QSTR_ ## type, \ + .print = typename ## _print, \ + .locals_dict = (mp_obj_t)&typename ## _locals_dict, \ + } + + + +mp_obj_t cp_enum_find(const mp_obj_type_t *type, int value); +int cp_enum_value(const mp_obj_type_t *type, mp_obj_t *obj); +void cp_enum_obj_print_helper(uint16_t module, const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind); @@ -181,6 +181,7 @@ PY_CORE_O_BASENAME = $(addprefix py/,\ argcheck.o \ warning.o \ map.o \ + enum.o \ obj.o \ objarray.o \ objattrtuple.o \ |