mirror of
https://github.com/trezor/trezor-firmware.git
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79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "py/objint.h"
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#include "py/runtime.h"
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#ifndef __TREZOROBJ_H__
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#define __TREZOROBJ_H__
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#if MICROPY_LONGINT_IMPL != MICROPY_LONGINT_IMPL_MPZ
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#error Use MPZ for MicroPython long int implementation.
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#endif
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// Casts int object into mp_int_t, without any conversions. Raises if object is
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// not int or if it does not fit into mp_int_t representation.
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static inline mp_int_t trezor_obj_get_int(mp_obj_t obj) {
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if (MP_OBJ_IS_SMALL_INT(obj)) {
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mp_int_t i = MP_OBJ_SMALL_INT_VALUE(obj);
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return i;
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} else if (MP_OBJ_IS_TYPE(obj, &mp_type_int)) {
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mp_int_t i = 0;
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mp_obj_int_t *self = MP_OBJ_TO_PTR(obj);
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if (!mpz_as_int_checked(&self->mpz, &i)) {
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mp_raise_msg(&mp_type_OverflowError,
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"value does not fit into signed int type");
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}
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return i;
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} else {
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mp_raise_TypeError("value is not int");
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}
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}
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// Casts int object into mp_uint_t, without any conversions. Raises if object is
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// not int or if it does not fit into mp_uint_t representation (or is less than
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// 0).
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static inline mp_uint_t trezor_obj_get_uint(mp_obj_t obj) {
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if (MP_OBJ_IS_SMALL_INT(obj)) {
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mp_int_t i = MP_OBJ_SMALL_INT_VALUE(obj);
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mp_uint_t u = i;
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return u;
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} else if (MP_OBJ_IS_TYPE(obj, &mp_type_int)) {
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mp_uint_t u = 0;
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mp_obj_int_t *self = MP_OBJ_TO_PTR(obj);
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if (!mpz_as_uint_checked(&self->mpz, &u)) {
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mp_raise_msg(&mp_type_OverflowError,
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"value does not fit into unsigned int type");
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}
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return u;
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} else {
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mp_raise_TypeError("value is not int");
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}
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}
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static inline uint8_t trezor_obj_get_uint8(mp_obj_t obj) {
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mp_uint_t u = trezor_obj_get_uint(obj);
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if (u > 0xFF) {
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mp_raise_msg(&mp_type_OverflowError, "value does not fit into byte type");
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}
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return u;
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}
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#endif
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