// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_OBJECTS_PROTOTYPE_INFO_INL_H_
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#define V8_OBJECTS_PROTOTYPE_INFO_INL_H_
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#include "src/objects/prototype-info.h"
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#include "src/heap/heap-write-barrier-inl.h"
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#include "src/objects/map.h"
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#include "src/objects/maybe-object.h"
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// Has to be the last include (doesn't have include guards):
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#include "src/objects/object-macros.h"
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namespace v8 {
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namespace internal {
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CAST_ACCESSOR(PrototypeInfo)
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Map* PrototypeInfo::ObjectCreateMap() {
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return Map::cast(object_create_map()->ToWeakHeapObject());
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}
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// static
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void PrototypeInfo::SetObjectCreateMap(Handle<PrototypeInfo> info,
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Handle<Map> map) {
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info->set_object_create_map(HeapObjectReference::Weak(*map));
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}
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bool PrototypeInfo::HasObjectCreateMap() {
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MaybeObject* cache = object_create_map();
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return cache->IsWeakHeapObject();
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}
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ACCESSORS(PrototypeInfo, module_namespace, Object, kJSModuleNamespaceOffset)
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ACCESSORS(PrototypeInfo, prototype_users, Object, kPrototypeUsersOffset)
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WEAK_ACCESSORS(PrototypeInfo, object_create_map, kObjectCreateMapOffset)
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SMI_ACCESSORS(PrototypeInfo, registry_slot, kRegistrySlotOffset)
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SMI_ACCESSORS(PrototypeInfo, bit_field, kBitFieldOffset)
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BOOL_ACCESSORS(PrototypeInfo, bit_field, should_be_fast_map, kShouldBeFastBit)
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void PrototypeUsers::MarkSlotEmpty(WeakArrayList* array, int index) {
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DCHECK_GT(index, 0);
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DCHECK_LT(index, array->length());
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// Chain the empty slots into a linked list (each empty slot contains the
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// index of the next empty slot).
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array->Set(index, MaybeObject::FromObject(empty_slot_index(array)));
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set_empty_slot_index(array, index);
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}
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Smi* PrototypeUsers::empty_slot_index(WeakArrayList* array) {
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return array->Get(kEmptySlotIndex)->ToSmi();
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}
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void PrototypeUsers::set_empty_slot_index(WeakArrayList* array, int index) {
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array->Set(kEmptySlotIndex, MaybeObject::FromObject(Smi::FromInt(index)));
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}
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} // namespace internal
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} // namespace v8
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#include "src/objects/object-macros-undef.h"
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#endif // V8_OBJECTS_PROTOTYPE_INFO_INL_H_
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