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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_MAYBE_OBJECT_INL_H_
#define V8_OBJECTS_MAYBE_OBJECT_INL_H_
#include "include/v8.h"
#include "src/globals.h"
namespace v8 {
namespace internal {
bool MaybeObject::ToSmi(Smi** value) {
if (HAS_SMI_TAG(this)) {
*value = Smi::cast(reinterpret_cast<Object*>(this));
return true;
}
return false;
}
bool MaybeObject::IsStrongOrWeakHeapObject() {
if (IsSmi() || IsClearedWeakHeapObject()) {
return false;
}
return true;
}
bool MaybeObject::ToStrongOrWeakHeapObject(HeapObject** result) {
if (IsSmi() || IsClearedWeakHeapObject()) {
return false;
}
*result = GetHeapObject();
return true;
}
bool MaybeObject::ToStrongOrWeakHeapObject(
HeapObject** result, HeapObjectReferenceType* reference_type) {
if (IsSmi() || IsClearedWeakHeapObject()) {
return false;
}
*reference_type = HasWeakHeapObjectTag(this)
? HeapObjectReferenceType::WEAK
: HeapObjectReferenceType::STRONG;
*result = GetHeapObject();
return true;
}
bool MaybeObject::IsStrongHeapObject() {
return !HasWeakHeapObjectTag(this) && !IsSmi();
}
bool MaybeObject::ToStrongHeapObject(HeapObject** result) {
if (!HasWeakHeapObjectTag(this) && !IsSmi()) {
*result = reinterpret_cast<HeapObject*>(this);
return true;
}
return false;
}
HeapObject* MaybeObject::ToStrongHeapObject() {
DCHECK(IsStrongHeapObject());
return reinterpret_cast<HeapObject*>(this);
}
bool MaybeObject::IsWeakHeapObject() {
return HasWeakHeapObjectTag(this) && !IsClearedWeakHeapObject();
}
bool MaybeObject::ToWeakHeapObject(HeapObject** result) {
if (HasWeakHeapObjectTag(this) && !IsClearedWeakHeapObject()) {
*result = GetHeapObject();
return true;
}
return false;
}
HeapObject* MaybeObject::ToWeakHeapObject() {
DCHECK(IsWeakHeapObject());
return GetHeapObject();
}
HeapObject* MaybeObject::GetHeapObject() {
DCHECK(!IsSmi());
DCHECK(!IsClearedWeakHeapObject());
return RemoveWeakHeapObjectMask(reinterpret_cast<HeapObjectReference*>(this));
}
} // namespace internal
} // namespace v8
#endif // V8_OBJECTS_MAYBE_OBJECT_INL_H_
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