// Copyright 2017 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_JS_ARRAY_INL_H_
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#define V8_OBJECTS_JS_ARRAY_INL_H_
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#include "src/objects/js-array.h"
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#include "src/objects-inl.h" // Needed for write barriers
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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(JSArray)
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CAST_ACCESSOR(JSArrayIterator)
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ACCESSORS(JSArray, length, Object, kLengthOffset)
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void JSArray::set_length(Smi* length) {
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// Don't need a write barrier for a Smi.
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set_length(static_cast<Object*>(length), SKIP_WRITE_BARRIER);
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}
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bool JSArray::SetLengthWouldNormalize(Heap* heap, uint32_t new_length) {
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return new_length > kMaxFastArrayLength;
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}
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bool JSArray::AllowsSetLength() {
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bool result = elements()->IsFixedArray() || elements()->IsFixedDoubleArray();
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DCHECK(result == !HasFixedTypedArrayElements());
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return result;
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}
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void JSArray::SetContent(Handle<JSArray> array,
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Handle<FixedArrayBase> storage) {
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EnsureCanContainElements(array, storage, storage->length(),
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ALLOW_COPIED_DOUBLE_ELEMENTS);
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DCHECK(
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(storage->map() == array->GetReadOnlyRoots().fixed_double_array_map() &&
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IsDoubleElementsKind(array->GetElementsKind())) ||
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((storage->map() != array->GetReadOnlyRoots().fixed_double_array_map()) &&
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(IsObjectElementsKind(array->GetElementsKind()) ||
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(IsSmiElementsKind(array->GetElementsKind()) &&
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Handle<FixedArray>::cast(storage)->ContainsOnlySmisOrHoles()))));
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array->set_elements(*storage);
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array->set_length(Smi::FromInt(storage->length()));
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}
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bool JSArray::HasArrayPrototype(Isolate* isolate) {
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return map()->prototype() == *isolate->initial_array_prototype();
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}
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ACCESSORS(JSArrayIterator, iterated_object, Object, kIteratedObjectOffset)
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ACCESSORS(JSArrayIterator, next_index, Object, kNextIndexOffset)
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IterationKind JSArrayIterator::kind() const {
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return static_cast<IterationKind>(
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Smi::cast(READ_FIELD(this, kKindOffset))->value());
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}
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void JSArrayIterator::set_kind(IterationKind kind) {
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WRITE_FIELD(this, kKindOffset, Smi::FromInt(static_cast<int>(kind)));
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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_JS_ARRAY_INL_H_
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