1// Copyright 2017 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef V8_OBJECTS_JS_ARRAY_INL_H_
6#define V8_OBJECTS_JS_ARRAY_INL_H_
7
8#include "src/objects/js-array.h"
9
10#include "src/objects/objects-inl.h"  // Needed for write barriers
11
12// Has to be the last include (doesn't have include guards):
13#include "src/objects/object-macros.h"
14
15namespace v8 {
16namespace internal {
17
18#include "torque-generated/src/objects/js-array-tq-inl.inc"
19
20TQ_OBJECT_CONSTRUCTORS_IMPL(JSArray)
21TQ_OBJECT_CONSTRUCTORS_IMPL(JSArrayIterator)
22
23DEF_GETTER(JSArray, length, Object) {
24  return TaggedField<Object, kLengthOffset>::load(cage_base, *this);
25}
26
27void JSArray::set_length(Object value, WriteBarrierMode mode) {
28  // Note the relaxed atomic store.
29  TaggedField<Object, kLengthOffset>::Relaxed_Store(*this, value);
30  CONDITIONAL_WRITE_BARRIER(*this, kLengthOffset, value, mode);
31}
32
33Object JSArray::length(PtrComprCageBase cage_base, RelaxedLoadTag tag) const {
34  return TaggedField<Object, kLengthOffset>::Relaxed_Load(cage_base, *this);
35}
36
37void JSArray::set_length(Smi length) {
38  // Don't need a write barrier for a Smi.
39  set_length(Object(length.ptr()), SKIP_WRITE_BARRIER);
40}
41
42bool JSArray::SetLengthWouldNormalize(Heap* heap, uint32_t new_length) {
43  return new_length > kMaxFastArrayLength;
44}
45
46void JSArray::SetContent(Handle<JSArray> array,
47                         Handle<FixedArrayBase> storage) {
48  EnsureCanContainElements(array, storage, storage->length(),
49                           ALLOW_COPIED_DOUBLE_ELEMENTS);
50
51  DCHECK(
52      (storage->map() == array->GetReadOnlyRoots().fixed_double_array_map() &&
53       IsDoubleElementsKind(array->GetElementsKind())) ||
54      ((storage->map() != array->GetReadOnlyRoots().fixed_double_array_map()) &&
55       (IsObjectElementsKind(array->GetElementsKind()) ||
56        (IsSmiElementsKind(array->GetElementsKind()) &&
57         Handle<FixedArray>::cast(storage)->ContainsOnlySmisOrHoles()))));
58  array->set_elements(*storage);
59  array->set_length(Smi::FromInt(storage->length()));
60}
61
62bool JSArray::HasArrayPrototype(Isolate* isolate) {
63  return map().prototype() == *isolate->initial_array_prototype();
64}
65
66SMI_ACCESSORS(JSArrayIterator, raw_kind, kKindOffset)
67
68IterationKind JSArrayIterator::kind() const {
69  return static_cast<IterationKind>(raw_kind());
70}
71
72void JSArrayIterator::set_kind(IterationKind kind) {
73  set_raw_kind(static_cast<int>(kind));
74}
75
76}  // namespace internal
77}  // namespace v8
78
79#include "src/objects/object-macros-undef.h"
80
81#endif  // V8_OBJECTS_JS_ARRAY_INL_H_
82