54 lines
2.0 KiB
C
54 lines
2.0 KiB
C
/*
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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) 2019 Jeff Epler for Adafruit Industries
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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 "py/obj.h"
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#include "py/proto.h"
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#include "py/runtime.h"
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#ifndef MICROPY_UNSAFE_PROTO
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const void *mp_proto_get(uint16_t name, mp_const_obj_t obj) {
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const mp_obj_type_t *type = mp_obj_get_type(obj);
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const void *protocol = MP_OBJ_TYPE_GET_SLOT_OR_NULL(type, protocol);
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if (!protocol) {
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return NULL;
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}
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uint16_t proto_name = *(const uint16_t *)protocol;
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if (proto_name == name) {
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return protocol;
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}
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return NULL;
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}
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#endif
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const void *mp_proto_get_or_throw(uint16_t name, mp_const_obj_t obj) {
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const void *proto = mp_proto_get(name, obj);
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if (proto) {
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return proto;
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}
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mp_raise_TypeError_varg(MP_ERROR_TEXT("'%q' object does not support '%q'"),
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mp_obj_get_type_qstr(obj), name);
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}
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