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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_ODDBALL_H_
#define V8_OBJECTS_ODDBALL_H_
#include "src/objects/primitive-heap-object.h"
// Has to be the last include (doesn't have include guards):
#include "src/objects/object-macros.h"
namespace v8 {
namespace internal {
#include "torque-generated/src/objects/oddball-tq.inc"
// The Oddball describes objects null, undefined, true, and false.
class Oddball : public TorqueGeneratedOddball<Oddball, PrimitiveHeapObject> {
public:
// [to_number_raw]: Cached raw to_number computed at startup.
inline void set_to_number_raw_as_bits(uint64_t bits);
inline byte kind() const;
inline void set_kind(byte kind);
// Oddball has a custom verifier.
void OddballVerify(Isolate* isolate);
// ES6 section 7.1.3 ToNumber for Boolean, Null, Undefined.
V8_WARN_UNUSED_RESULT static inline Handle<Object> ToNumber(
Isolate* isolate, Handle<Oddball> input);
// Initialize the fields.
static void Initialize(Isolate* isolate, Handle<Oddball> oddball,
const char* to_string, Handle<Object> to_number,
const char* type_of, byte kind);
static const byte kFalse = 0;
static const byte kTrue = 1;
static const byte kNotBooleanMask = static_cast<byte>(~1);
static const byte kTheHole = 2;
static const byte kNull = 3;
static const byte kArgumentsMarker = 4;
static const byte kUndefined = 5;
static const byte kUninitialized = 6;
static const byte kOther = 7;
static const byte kException = 8;
static const byte kOptimizedOut = 9;
static const byte kStaleRegister = 10;
static const byte kSelfReferenceMarker = 10;
static const byte kBasicBlockCountersMarker = 11;
class BodyDescriptor;
STATIC_ASSERT(kKindOffset == Internals::kOddballKindOffset);
STATIC_ASSERT(kNull == Internals::kNullOddballKind);
STATIC_ASSERT(kUndefined == Internals::kUndefinedOddballKind);
DECL_PRINTER(Oddball)
TQ_OBJECT_CONSTRUCTORS(Oddball)
};
} // namespace internal
} // namespace v8
#include "src/objects/object-macros-undef.h"
#endif // V8_OBJECTS_ODDBALL_H_
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