1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
// Copyright 2018 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.
#ifndef V8_OBJECTS_PROTOTYPE_INFO_INL_H_
#define V8_OBJECTS_PROTOTYPE_INFO_INL_H_
#include "src/objects/prototype-info.h"
#include "src/objects/maybe-object.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
CAST_ACCESSOR(PrototypeInfo)
Map* PrototypeInfo::ObjectCreateMap() {
return Map::cast(object_create_map()->ToWeakHeapObject());
}
// static
void PrototypeInfo::SetObjectCreateMap(Handle<PrototypeInfo> info,
Handle<Map> map) {
info->set_object_create_map(HeapObjectReference::Weak(*map));
}
bool PrototypeInfo::HasObjectCreateMap() {
MaybeObject* cache = object_create_map();
return cache->IsWeakHeapObject();
}
ACCESSORS(PrototypeInfo, weak_cell, Object, kWeakCellOffset)
ACCESSORS(PrototypeInfo, prototype_users, Object, kPrototypeUsersOffset)
WEAK_ACCESSORS(PrototypeInfo, object_create_map, kObjectCreateMapOffset)
SMI_ACCESSORS(PrototypeInfo, registry_slot, kRegistrySlotOffset)
SMI_ACCESSORS(PrototypeInfo, bit_field, kBitFieldOffset)
BOOL_ACCESSORS(PrototypeInfo, bit_field, should_be_fast_map, kShouldBeFastBit)
void PrototypeUsers::MarkSlotEmpty(WeakArrayList* array, int index) {
DCHECK_GT(index, 0);
DCHECK_LT(index, array->length());
// Chain the empty slots into a linked list (each empty slot contains the
// index of the next empty slot).
array->Set(index, MaybeObject::FromObject(empty_slot_index(array)));
set_empty_slot_index(array, index);
}
Smi* PrototypeUsers::empty_slot_index(WeakArrayList* array) {
return array->Get(kEmptySlotIndex)->ToSmi();
}
void PrototypeUsers::set_empty_slot_index(WeakArrayList* array, int index) {
array->Set(kEmptySlotIndex, MaybeObject::FromObject(Smi::FromInt(index)));
}
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_PROTOTYPE_INFO_INL_H_
|
