// 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_HANDLES_MAYBE_HANDLES_INL_H_ #define V8_HANDLES_MAYBE_HANDLES_INL_H_ #include "src/handles/maybe-handles.h" #include "src/handles/handles-inl.h" #include "src/objects/maybe-object-inl.h" namespace v8 { namespace internal { template <typename T> MaybeHandle<T>::MaybeHandle(T object, Isolate* isolate) : MaybeHandle(handle(object, isolate)) {} template <typename T> MaybeHandle<T>::MaybeHandle(T object, LocalHeap* local_heap) : MaybeHandle(handle(object, local_heap)) {} MaybeObjectHandle::MaybeObjectHandle(MaybeObject object, Isolate* isolate) { HeapObject heap_object; DCHECK(!object->IsCleared()); if (object->GetHeapObjectIfWeak(&heap_object)) { handle_ = handle(heap_object, isolate); reference_type_ = HeapObjectReferenceType::WEAK; } else { handle_ = handle(object->cast<Object>(), isolate); reference_type_ = HeapObjectReferenceType::STRONG; } } MaybeObjectHandle::MaybeObjectHandle(MaybeObject object, LocalHeap* local_heap) { HeapObject heap_object; DCHECK(!object->IsCleared()); if (object->GetHeapObjectIfWeak(&heap_object)) { handle_ = handle(heap_object, local_heap); reference_type_ = HeapObjectReferenceType::WEAK; } else { handle_ = handle(object->cast<Object>(), local_heap); reference_type_ = HeapObjectReferenceType::STRONG; } } MaybeObjectHandle::MaybeObjectHandle(Handle<Object> object) : reference_type_(HeapObjectReferenceType::STRONG), handle_(object) {} MaybeObjectHandle::MaybeObjectHandle(Object object, Isolate* isolate) : reference_type_(HeapObjectReferenceType::STRONG), handle_(object, isolate) {} MaybeObjectHandle::MaybeObjectHandle(Object object, LocalHeap* local_heap) : reference_type_(HeapObjectReferenceType::STRONG), handle_(object, local_heap) {} MaybeObjectHandle::MaybeObjectHandle(Object object, HeapObjectReferenceType reference_type, Isolate* isolate) : reference_type_(reference_type), handle_(handle(object, isolate)) {} MaybeObjectHandle::MaybeObjectHandle(Handle<Object> object, HeapObjectReferenceType reference_type) : reference_type_(reference_type), handle_(object) {} MaybeObjectHandle MaybeObjectHandle::Weak(Handle<Object> object) { return MaybeObjectHandle(object, HeapObjectReferenceType::WEAK); } MaybeObjectHandle MaybeObjectHandle::Weak(Object object, Isolate* isolate) { return MaybeObjectHandle(object, HeapObjectReferenceType::WEAK, isolate); } bool MaybeObjectHandle::is_identical_to(const MaybeObjectHandle& other) const { Handle<Object> this_handle; Handle<Object> other_handle; return reference_type_ == other.reference_type_ && handle_.ToHandle(&this_handle) == other.handle_.ToHandle(&other_handle) && this_handle.is_identical_to(other_handle); } MaybeObject MaybeObjectHandle::operator*() const { if (reference_type_ == HeapObjectReferenceType::WEAK) { return HeapObjectReference::Weak(*handle_.ToHandleChecked()); } else { return MaybeObject::FromObject(*handle_.ToHandleChecked()); } } MaybeObject MaybeObjectHandle::operator->() const { if (reference_type_ == HeapObjectReferenceType::WEAK) { return HeapObjectReference::Weak(*handle_.ToHandleChecked()); } else { return MaybeObject::FromObject(*handle_.ToHandleChecked()); } } Handle<Object> MaybeObjectHandle::object() const { return handle_.ToHandleChecked(); } inline MaybeObjectHandle handle(MaybeObject object, Isolate* isolate) { return MaybeObjectHandle(object, isolate); } inline MaybeObjectHandle handle(MaybeObject object, LocalHeap* local_heap) { return MaybeObjectHandle(object, local_heap); } } // namespace internal } // namespace v8 #endif // V8_HANDLES_MAYBE_HANDLES_INL_H_