| // Copyright 2019 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| extern class PrototypeInfo extends Struct { |
| js_module_namespace: JSModuleNamespace|Undefined; |
| prototype_users: WeakArrayList|Zero; |
| registry_slot: Smi; |
| validity_cell: Object; |
| object_create_map: Weak<Map>|Undefined; |
| bit_field: Smi; |
| } |
| |
| extern macro PrototypeInfoMapConstant(): Map; |
| const kPrototypeInfoMap: Map = PrototypeInfoMapConstant(); |
| |
| Cast<PrototypeInfo>(o: HeapObject): PrototypeInfo labels CastError { |
| if (o.map != kPrototypeInfoMap) goto CastError; |
| return %RawDownCast<PrototypeInfo>(o); |
| } |
