micropython/py/objbool.c

108 lines
3.7 KiB
C

/*
* This file is part of the Micro Python project, http://micropython.org/
*
* 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.
*/
#include <stdlib.h>
#include "py/obj.h"
#include "py/runtime0.h"
#include "py/runtime.h"
typedef struct _mp_obj_bool_t {
mp_obj_base_t base;
bool value;
} mp_obj_bool_t;
STATIC void bool_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
mp_obj_bool_t *self = self_in;
if (MICROPY_PY_UJSON && kind == PRINT_JSON) {
if (self->value) {
mp_print_str(print, "true");
} else {
mp_print_str(print, "false");
}
} else {
if (self->value) {
mp_print_str(print, "True");
} else {
mp_print_str(print, "False");
}
}
}
STATIC mp_obj_t bool_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
(void)type_in;
mp_arg_check_num(n_args, n_kw, 0, 1, false);
switch (n_args) {
case 0:
return mp_const_false;
case 1:
default: // must be 0 or 1
if (mp_obj_is_true(args[0])) { return mp_const_true; } else { return mp_const_false; }
}
}
STATIC mp_obj_t bool_unary_op(mp_uint_t op, mp_obj_t o_in) {
mp_int_t value = ((mp_obj_bool_t*)o_in)->value;
switch (op) {
case MP_UNARY_OP_BOOL: return o_in;
// needs to hash to the same value as if converting to an integer
case MP_UNARY_OP_HASH: return MP_OBJ_NEW_SMALL_INT(value);
case MP_UNARY_OP_POSITIVE: return MP_OBJ_NEW_SMALL_INT(value);
case MP_UNARY_OP_NEGATIVE: return MP_OBJ_NEW_SMALL_INT(-value);
case MP_UNARY_OP_INVERT: return MP_OBJ_NEW_SMALL_INT(~value);
// only bool needs to implement MP_UNARY_OP_NOT
case MP_UNARY_OP_NOT:
if (value) {
return mp_const_false;
} else {
return mp_const_true;
}
default: return MP_OBJ_NULL; // op not supported
}
}
STATIC mp_obj_t bool_binary_op(mp_uint_t op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
if (MP_BINARY_OP_OR <= op && op <= MP_BINARY_OP_NOT_EQUAL) {
return mp_binary_op(op, MP_OBJ_NEW_SMALL_INT(mp_obj_is_true(lhs_in)), rhs_in);
}
return MP_OBJ_NULL; // op not supported
}
const mp_obj_type_t mp_type_bool = {
{ &mp_type_type },
.name = MP_QSTR_bool,
.print = bool_print,
.make_new = bool_make_new,
.unary_op = bool_unary_op,
.binary_op = bool_binary_op,
};
const mp_obj_bool_t mp_const_false_obj = {{&mp_type_bool}, false};
const mp_obj_bool_t mp_const_true_obj = {{&mp_type_bool}, true};