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// 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_PROPERTY_ARRAY_H_
#define V8_OBJECTS_PROPERTY_ARRAY_H_
#include "src/objects/heap-object.h"
#include "torque-generated/field-offsets-tq.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
class PropertyArray : public HeapObject {
public:
// [length]: length of the array.
inline int length() const;
// Get the length using acquire loads.
inline int synchronized_length() const;
// This is only used on a newly allocated PropertyArray which
// doesn't have an existing hash.
inline void initialize_length(int length);
inline void SetHash(int hash);
inline int Hash() const;
inline Object get(int index) const;
inline Object get(Isolate* isolate, int index) const;
inline void set(int index, Object value);
// Setter with explicit barrier mode.
inline void set(int index, Object value, WriteBarrierMode mode);
// Signature must be in sync with FixedArray::CopyElements().
inline void CopyElements(Isolate* isolate, int dst_index, PropertyArray src,
int src_index, int len, WriteBarrierMode mode);
// Gives access to raw memory which stores the array's data.
inline ObjectSlot data_start();
// Garbage collection support.
static constexpr int SizeFor(int length) {
return kHeaderSize + length * kTaggedSize;
}
static constexpr int OffsetOfElementAt(int index) { return SizeFor(index); }
DECL_CAST(PropertyArray)
DECL_PRINTER(PropertyArray)
DECL_VERIFIER(PropertyArray)
DEFINE_FIELD_OFFSET_CONSTANTS(HeapObject::kHeaderSize,
TORQUE_GENERATED_PROPERTY_ARRAY_FIELDS)
static const int kHeaderSize = kSize;
// Garbage collection support.
using BodyDescriptor = FlexibleBodyDescriptor<kHeaderSize>;
static const int kLengthFieldSize = 10;
using LengthField = BitField<int, 0, kLengthFieldSize>;
static const int kMaxLength = LengthField::kMax;
using HashField =
BitField<int, kLengthFieldSize, kSmiValueSize - kLengthFieldSize - 1>;
static const int kNoHashSentinel = 0;
private:
DECL_INT_ACCESSORS(length_and_hash)
DECL_SYNCHRONIZED_INT_ACCESSORS(length_and_hash)
OBJECT_CONSTRUCTORS(PropertyArray, HeapObject);
};
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_PROPERTY_ARRAY_H_