gecko-dev/dom/indexedDB/IDBCursor.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "IDBCursor.h"
#include "IDBDatabase.h"
#include "IDBIndex.h"
#include "IDBObjectStore.h"
#include "IDBRequest.h"
#include "IDBTransaction.h"
#include "IndexedDatabaseInlines.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/UnionTypes.h"
#include "mozilla/dom/indexedDB/PBackgroundIDBSharedTypes.h"
#include "nsString.h"
#include "ProfilerHelpers.h"
#include "ReportInternalError.h"
// Include this last to avoid path problems on Windows.
#include "ActorsChild.h"
namespace mozilla {
namespace dom {
namespace indexedDB {
IDBCursor::IDBCursor(Type aType,
BackgroundCursorChild* aBackgroundActor,
const Key& aKey)
: mBackgroundActor(aBackgroundActor)
, mRequest(aBackgroundActor->GetRequest())
, mSourceObjectStore(aBackgroundActor->GetObjectStore())
, mSourceIndex(aBackgroundActor->GetIndex())
, mTransaction(mRequest->GetTransaction())
, mScriptOwner(mTransaction->Database()->GetScriptOwner())
, mCachedKey(JS::UndefinedValue())
, mCachedPrimaryKey(JS::UndefinedValue())
, mCachedValue(JS::UndefinedValue())
, mKey(aKey)
, mType(aType)
, mDirection(aBackgroundActor->GetDirection())
, mHaveCachedKey(false)
, mHaveCachedPrimaryKey(false)
, mHaveCachedValue(false)
, mRooted(false)
, mContinueCalled(false)
, mHaveValue(true)
{
MOZ_ASSERT(aBackgroundActor);
aBackgroundActor->AssertIsOnOwningThread();
MOZ_ASSERT(mRequest);
MOZ_ASSERT_IF(aType == Type_ObjectStore || aType == Type_ObjectStoreKey,
mSourceObjectStore);
MOZ_ASSERT_IF(aType == Type_Index || aType == Type_IndexKey, mSourceIndex);
MOZ_ASSERT(mTransaction);
MOZ_ASSERT(!aKey.IsUnset());
MOZ_ASSERT(mScriptOwner);
if (mScriptOwner) {
mozilla::HoldJSObjects(this);
mRooted = true;
}
}
IDBCursor::~IDBCursor()
{
AssertIsOnOwningThread();
DropJSObjects();
if (mBackgroundActor) {
mBackgroundActor->SendDeleteMeInternal();
MOZ_ASSERT(!mBackgroundActor, "SendDeleteMeInternal should have cleared!");
}
}
// static
already_AddRefed<IDBCursor>
IDBCursor::Create(BackgroundCursorChild* aBackgroundActor,
const Key& aKey,
StructuredCloneReadInfo&& aCloneInfo)
{
MOZ_ASSERT(aBackgroundActor);
aBackgroundActor->AssertIsOnOwningThread();
MOZ_ASSERT(aBackgroundActor->GetObjectStore());
MOZ_ASSERT(!aBackgroundActor->GetIndex());
MOZ_ASSERT(!aKey.IsUnset());
nsRefPtr<IDBCursor> cursor =
new IDBCursor(Type_ObjectStore, aBackgroundActor, aKey);
cursor->mCloneInfo = Move(aCloneInfo);
return cursor.forget();
}
// static
already_AddRefed<IDBCursor>
IDBCursor::Create(BackgroundCursorChild* aBackgroundActor,
const Key& aKey)
{
MOZ_ASSERT(aBackgroundActor);
aBackgroundActor->AssertIsOnOwningThread();
MOZ_ASSERT(aBackgroundActor->GetObjectStore());
MOZ_ASSERT(!aBackgroundActor->GetIndex());
MOZ_ASSERT(!aKey.IsUnset());
nsRefPtr<IDBCursor> cursor =
new IDBCursor(Type_ObjectStoreKey, aBackgroundActor, aKey);
return cursor.forget();
}
// static
already_AddRefed<IDBCursor>
IDBCursor::Create(BackgroundCursorChild* aBackgroundActor,
const Key& aKey,
const Key& aPrimaryKey,
StructuredCloneReadInfo&& aCloneInfo)
{
MOZ_ASSERT(aBackgroundActor);
aBackgroundActor->AssertIsOnOwningThread();
MOZ_ASSERT(aBackgroundActor->GetIndex());
MOZ_ASSERT(!aBackgroundActor->GetObjectStore());
MOZ_ASSERT(!aKey.IsUnset());
MOZ_ASSERT(!aPrimaryKey.IsUnset());
nsRefPtr<IDBCursor> cursor =
new IDBCursor(Type_Index, aBackgroundActor, aKey);
cursor->mPrimaryKey = Move(aPrimaryKey);
cursor->mCloneInfo = Move(aCloneInfo);
return cursor.forget();
}
// static
already_AddRefed<IDBCursor>
IDBCursor::Create(BackgroundCursorChild* aBackgroundActor,
const Key& aKey,
const Key& aPrimaryKey)
{
MOZ_ASSERT(aBackgroundActor);
aBackgroundActor->AssertIsOnOwningThread();
MOZ_ASSERT(aBackgroundActor->GetIndex());
MOZ_ASSERT(!aBackgroundActor->GetObjectStore());
MOZ_ASSERT(!aKey.IsUnset());
MOZ_ASSERT(!aPrimaryKey.IsUnset());
nsRefPtr<IDBCursor> cursor =
new IDBCursor(Type_IndexKey, aBackgroundActor, aKey);
cursor->mPrimaryKey = Move(aPrimaryKey);
return cursor.forget();
}
// static
auto
IDBCursor::ConvertDirection(IDBCursorDirection aDirection) -> Direction
{
switch (aDirection) {
case mozilla::dom::IDBCursorDirection::Next:
return NEXT;
case mozilla::dom::IDBCursorDirection::Nextunique:
return NEXT_UNIQUE;
case mozilla::dom::IDBCursorDirection::Prev:
return PREV;
case mozilla::dom::IDBCursorDirection::Prevunique:
return PREV_UNIQUE;
default:
MOZ_CRASH("Unknown direction!");
}
}
#ifdef DEBUG
void
IDBCursor::AssertIsOnOwningThread() const
{
MOZ_ASSERT(mTransaction);
mTransaction->AssertIsOnOwningThread();
}
#endif // DEBUG
void
IDBCursor::DropJSObjects()
{
AssertIsOnOwningThread();
Reset();
if (!mRooted) {
return;
}
mScriptOwner = nullptr;
mRooted = false;
mozilla::DropJSObjects(this);
}
void
IDBCursor::Reset()
{
AssertIsOnOwningThread();
mCachedKey.setUndefined();
mCachedPrimaryKey.setUndefined();
mCachedValue.setUndefined();
IDBObjectStore::ClearCloneReadInfo(mCloneInfo);
mHaveCachedKey = false;
mHaveCachedPrimaryKey = false;
mHaveCachedValue = false;
mHaveValue = false;
mContinueCalled = false;
}
nsPIDOMWindow*
IDBCursor::GetParentObject() const
{
AssertIsOnOwningThread();
MOZ_ASSERT(mTransaction);
return mTransaction->GetParentObject();
}
IDBCursorDirection
IDBCursor::GetDirection() const
{
AssertIsOnOwningThread();
switch (mDirection) {
case NEXT:
return IDBCursorDirection::Next;
case NEXT_UNIQUE:
return IDBCursorDirection::Nextunique;
case PREV:
return IDBCursorDirection::Prev;
case PREV_UNIQUE:
return IDBCursorDirection::Prevunique;
default:
MOZ_CRASH("Bad direction!");
}
}
void
IDBCursor::GetSource(OwningIDBObjectStoreOrIDBIndex& aSource) const
{
AssertIsOnOwningThread();
switch (mType) {
case Type_ObjectStore:
case Type_ObjectStoreKey:
MOZ_ASSERT(mSourceObjectStore);
aSource.SetAsIDBObjectStore() = mSourceObjectStore;
return;
case Type_Index:
case Type_IndexKey:
MOZ_ASSERT(mSourceIndex);
aSource.SetAsIDBIndex() = mSourceIndex;
return;
default:
MOZ_ASSERT_UNREACHABLE("Bad type!");
}
}
void
IDBCursor::GetKey(JSContext* aCx, JS::MutableHandle<JS::Value> aResult,
ErrorResult& aRv)
{
AssertIsOnOwningThread();
MOZ_ASSERT(!mKey.IsUnset() || !mHaveValue);
if (!mHaveValue) {
aResult.setUndefined();
return;
}
if (!mHaveCachedKey) {
if (!mRooted) {
mozilla::HoldJSObjects(this);
mRooted = true;
}
aRv = mKey.ToJSVal(aCx, mCachedKey);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
mHaveCachedKey = true;
}
JS::ExposeValueToActiveJS(mCachedKey);
aResult.set(mCachedKey);
}
void
IDBCursor::GetPrimaryKey(JSContext* aCx, JS::MutableHandle<JS::Value> aResult,
ErrorResult& aRv)
{
AssertIsOnOwningThread();
if (!mHaveValue) {
aResult.setUndefined();
return;
}
if (!mHaveCachedPrimaryKey) {
if (!mRooted) {
mozilla::HoldJSObjects(this);
mRooted = true;
}
const Key& key =
(mType == Type_ObjectStore || mType == Type_ObjectStoreKey) ?
mKey :
mPrimaryKey;
MOZ_ASSERT(!key.IsUnset());
aRv = key.ToJSVal(aCx, mCachedPrimaryKey);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
mHaveCachedPrimaryKey = true;
}
JS::ExposeValueToActiveJS(mCachedPrimaryKey);
aResult.set(mCachedPrimaryKey);
}
void
IDBCursor::GetValue(JSContext* aCx, JS::MutableHandle<JS::Value> aResult,
ErrorResult& aRv)
{
AssertIsOnOwningThread();
MOZ_ASSERT(mType == Type_ObjectStore || mType == Type_Index);
if (!mHaveValue) {
aResult.setUndefined();
return;
}
if (!mHaveCachedValue) {
if (!mRooted) {
mozilla::HoldJSObjects(this);
mRooted = true;
}
JS::Rooted<JS::Value> val(aCx);
if (NS_WARN_IF(!IDBObjectStore::DeserializeValue(aCx, mCloneInfo, &val))) {
aRv.Throw(NS_ERROR_DOM_DATA_CLONE_ERR);
return;
}
IDBObjectStore::ClearCloneReadInfo(mCloneInfo);
mCachedValue = val;
mHaveCachedValue = true;
}
JS::ExposeValueToActiveJS(mCachedValue);
aResult.set(mCachedValue);
}
void
IDBCursor::Continue(JSContext* aCx,
JS::Handle<JS::Value> aKey,
ErrorResult &aRv)
{
AssertIsOnOwningThread();
if (!mTransaction->IsOpen()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
return;
}
if (!mHaveValue || mContinueCalled) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
return;
}
Key key;
aRv = key.SetFromJSVal(aCx, aKey);
if (aRv.Failed()) {
return;
}
if (!key.IsUnset()) {
switch (mDirection) {
case NEXT:
case NEXT_UNIQUE:
if (key <= mKey) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_DATA_ERR);
return;
}
break;
case PREV:
case PREV_UNIQUE:
if (key >= mKey) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_DATA_ERR);
return;
}
break;
default:
MOZ_CRASH("Unknown direction type!");
}
}
const uint64_t requestSerialNumber = IDBRequest::NextSerialNumber();
mRequest->SetLoggingSerialNumber(requestSerialNumber);
if (mType == Type_ObjectStore || mType == Type_ObjectStoreKey) {
IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
"database(%s).transaction(%s).objectStore(%s)."
"cursor(%s).continue(%s)",
"IndexedDB %s: C T[%lld] R[%llu]: IDBCursor.continue()",
IDB_LOG_ID_STRING(),
mTransaction->LoggingSerialNumber(),
requestSerialNumber,
IDB_LOG_STRINGIFY(mTransaction->Database()),
IDB_LOG_STRINGIFY(mTransaction),
IDB_LOG_STRINGIFY(mSourceObjectStore),
IDB_LOG_STRINGIFY(mDirection),
IDB_LOG_STRINGIFY(key));
} else {
IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
"database(%s).transaction(%s).objectStore(%s)."
"index(%s).cursor(%s).continue(%s)",
"IndexedDB %s: C T[%lld] R[%llu]: IDBCursor.continue()",
IDB_LOG_ID_STRING(),
mTransaction->LoggingSerialNumber(),
requestSerialNumber,
IDB_LOG_STRINGIFY(mTransaction->Database()),
IDB_LOG_STRINGIFY(mTransaction),
IDB_LOG_STRINGIFY(mSourceIndex->ObjectStore()),
IDB_LOG_STRINGIFY(mSourceIndex),
IDB_LOG_STRINGIFY(mDirection),
IDB_LOG_STRINGIFY(key));
}
mBackgroundActor->SendContinueInternal(ContinueParams(key));
mContinueCalled = true;
}
void
IDBCursor::Advance(uint32_t aCount, ErrorResult &aRv)
{
AssertIsOnOwningThread();
if (!mTransaction->IsOpen()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
return;
}
if (!mHaveValue || mContinueCalled) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
return;
}
if (!aCount) {
aRv.ThrowTypeError(MSG_INVALID_ADVANCE_COUNT);
return;
}
const uint64_t requestSerialNumber = IDBRequest::NextSerialNumber();
mRequest->SetLoggingSerialNumber(requestSerialNumber);
if (mType == Type_ObjectStore || mType == Type_ObjectStoreKey) {
IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
"database(%s).transaction(%s).objectStore(%s)."
"cursor(%s).advance(%ld)",
"IndexedDB %s: C T[%lld] R[%llu]: IDBCursor.advance()",
IDB_LOG_ID_STRING(),
mTransaction->LoggingSerialNumber(),
requestSerialNumber,
IDB_LOG_STRINGIFY(mTransaction->Database()),
IDB_LOG_STRINGIFY(mTransaction),
IDB_LOG_STRINGIFY(mSourceObjectStore),
IDB_LOG_STRINGIFY(mDirection),
aCount);
} else {
IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
"database(%s).transaction(%s).objectStore(%s)."
"index(%s).cursor(%s).advance(%ld)",
"IndexedDB %s: C T[%lld] R[%llu]: IDBCursor.advance()",
IDB_LOG_ID_STRING(),
mTransaction->LoggingSerialNumber(),
requestSerialNumber,
IDB_LOG_STRINGIFY(mTransaction->Database()),
IDB_LOG_STRINGIFY(mTransaction),
IDB_LOG_STRINGIFY(mSourceIndex->ObjectStore()),
IDB_LOG_STRINGIFY(mSourceIndex),
IDB_LOG_STRINGIFY(mDirection),
aCount);
}
mBackgroundActor->SendContinueInternal(AdvanceParams(aCount));
mContinueCalled = true;
}
already_AddRefed<IDBRequest>
IDBCursor::Update(JSContext* aCx, JS::Handle<JS::Value> aValue,
ErrorResult& aRv)
{
AssertIsOnOwningThread();
if (!mTransaction->IsOpen()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
return nullptr;
}
if (!mHaveValue || mType == Type_ObjectStoreKey || mType == Type_IndexKey) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
return nullptr;
}
if (!mTransaction->IsWriteAllowed()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_READ_ONLY_ERR);
return nullptr;
}
MOZ_ASSERT(mType == Type_ObjectStore || mType == Type_Index);
MOZ_ASSERT(!mKey.IsUnset());
MOZ_ASSERT_IF(mType == Type_Index, !mPrimaryKey.IsUnset());
IDBObjectStore* objectStore;
if (mType == Type_ObjectStore) {
objectStore = mSourceObjectStore;
} else {
objectStore = mSourceIndex->ObjectStore();
}
MOZ_ASSERT(objectStore);
const Key& primaryKey = (mType == Type_ObjectStore) ? mKey : mPrimaryKey;
nsRefPtr<IDBRequest> request;
if (objectStore->HasValidKeyPath()) {
// Make sure the object given has the correct keyPath value set on it.
const KeyPath& keyPath = objectStore->GetKeyPath();
Key key;
aRv = keyPath.ExtractKey(aCx, aValue, key);
if (aRv.Failed()) {
return nullptr;
}
if (key != primaryKey) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_DATA_ERR);
return nullptr;
}
request = objectStore->AddOrPut(aCx,
aValue,
/* aKey */ JS::UndefinedHandleValue,
/* aOverwrite */ true,
/* aFromCursor */ true,
aRv);
if (aRv.Failed()) {
return nullptr;
}
}
else {
JS::Rooted<JS::Value> keyVal(aCx);
aRv = primaryKey.ToJSVal(aCx, &keyVal);
if (aRv.Failed()) {
return nullptr;
}
request = objectStore->AddOrPut(aCx,
aValue,
keyVal,
/* aOverwrite */ true,
/* aFromCursor */ true,
aRv);
if (aRv.Failed()) {
return nullptr;
}
}
request->SetSource(this);
if (mType == Type_ObjectStore) {
IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
"database(%s).transaction(%s).objectStore(%s)."
"cursor(%s).update(%s)",
"IndexedDB %s: C T[%lld] R[%llu]: IDBCursor.update()",
IDB_LOG_ID_STRING(),
mTransaction->LoggingSerialNumber(),
request->LoggingSerialNumber(),
IDB_LOG_STRINGIFY(mTransaction->Database()),
IDB_LOG_STRINGIFY(mTransaction),
IDB_LOG_STRINGIFY(objectStore),
IDB_LOG_STRINGIFY(mDirection),
IDB_LOG_STRINGIFY(objectStore, primaryKey));
} else {
IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
"database(%s).transaction(%s).objectStore(%s)."
"index(%s).cursor(%s).update(%s)",
"IndexedDB %s: C T[%lld] R[%llu]: IDBCursor.update()",
IDB_LOG_ID_STRING(),
mTransaction->LoggingSerialNumber(),
request->LoggingSerialNumber(),
IDB_LOG_STRINGIFY(mTransaction->Database()),
IDB_LOG_STRINGIFY(mTransaction),
IDB_LOG_STRINGIFY(objectStore),
IDB_LOG_STRINGIFY(mSourceIndex),
IDB_LOG_STRINGIFY(mDirection),
IDB_LOG_STRINGIFY(objectStore, primaryKey));
}
return request.forget();
}
already_AddRefed<IDBRequest>
IDBCursor::Delete(JSContext* aCx, ErrorResult& aRv)
{
AssertIsOnOwningThread();
if (!mTransaction->IsOpen()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_TRANSACTION_INACTIVE_ERR);
return nullptr;
}
if (!mHaveValue || mType == Type_ObjectStoreKey || mType == Type_IndexKey) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR);
return nullptr;
}
if (!mTransaction->IsWriteAllowed()) {
aRv.Throw(NS_ERROR_DOM_INDEXEDDB_READ_ONLY_ERR);
return nullptr;
}
MOZ_ASSERT(mType == Type_ObjectStore || mType == Type_Index);
MOZ_ASSERT(!mKey.IsUnset());
IDBObjectStore* objectStore;
if (mType == Type_ObjectStore) {
objectStore = mSourceObjectStore;
} else {
objectStore = mSourceIndex->ObjectStore();
}
MOZ_ASSERT(objectStore);
const Key& primaryKey = (mType == Type_ObjectStore) ? mKey : mPrimaryKey;
JS::Rooted<JS::Value> key(aCx);
aRv = primaryKey.ToJSVal(aCx, &key);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
nsRefPtr<IDBRequest> request =
objectStore->DeleteInternal(aCx, key, /* aFromCursor */ true, aRv);
if (aRv.Failed()) {
return nullptr;
}
request->SetSource(this);
if (mType == Type_ObjectStore) {
IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
"database(%s).transaction(%s).objectStore(%s)."
"cursor(%s).delete(%s)",
"IndexedDB %s: C T[%lld] R[%llu]: IDBCursor.delete()",
IDB_LOG_ID_STRING(),
mTransaction->LoggingSerialNumber(),
request->LoggingSerialNumber(),
IDB_LOG_STRINGIFY(mTransaction->Database()),
IDB_LOG_STRINGIFY(mTransaction),
IDB_LOG_STRINGIFY(objectStore),
IDB_LOG_STRINGIFY(mDirection),
IDB_LOG_STRINGIFY(objectStore, primaryKey));
} else {
IDB_LOG_MARK("IndexedDB %s: Child Transaction[%lld] Request[%llu]: "
"database(%s).transaction(%s).objectStore(%s)."
"index(%s).cursor(%s).delete(%s)",
"IndexedDB %s: C T[%lld] R[%llu]: IDBCursor.delete()",
IDB_LOG_ID_STRING(),
mTransaction->LoggingSerialNumber(),
request->LoggingSerialNumber(),
IDB_LOG_STRINGIFY(mTransaction->Database()),
IDB_LOG_STRINGIFY(mTransaction),
IDB_LOG_STRINGIFY(objectStore),
IDB_LOG_STRINGIFY(mSourceIndex),
IDB_LOG_STRINGIFY(mDirection),
IDB_LOG_STRINGIFY(objectStore, primaryKey));
}
return request.forget();
}
void
IDBCursor::Reset(Key&& aKey, StructuredCloneReadInfo&& aValue)
{
AssertIsOnOwningThread();
MOZ_ASSERT(mType == Type_ObjectStore);
Reset();
mKey = Move(aKey);
mCloneInfo = Move(aValue);
mHaveValue = !mKey.IsUnset();
}
void
IDBCursor::Reset(Key&& aKey)
{
AssertIsOnOwningThread();
MOZ_ASSERT(mType == Type_ObjectStoreKey);
Reset();
mKey = Move(aKey);
mHaveValue = !mKey.IsUnset();
}
void
IDBCursor::Reset(Key&& aKey,
Key&& aPrimaryKey,
StructuredCloneReadInfo&& aValue)
{
AssertIsOnOwningThread();
MOZ_ASSERT(mType == Type_Index);
Reset();
mKey = Move(aKey);
mPrimaryKey = Move(aPrimaryKey);
mCloneInfo = Move(aValue);
mHaveValue = !mKey.IsUnset();
}
void
IDBCursor::Reset(Key&& aKey, Key&& aPrimaryKey)
{
AssertIsOnOwningThread();
MOZ_ASSERT(mType == Type_IndexKey);
Reset();
mKey = Move(aKey);
mPrimaryKey = Move(aPrimaryKey);
mHaveValue = !mKey.IsUnset();
}
NS_IMPL_CYCLE_COLLECTING_ADDREF(IDBCursor)
NS_IMPL_CYCLE_COLLECTING_RELEASE(IDBCursor)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IDBCursor)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTION_CLASS(IDBCursor)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IDBCursor)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRequest)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSourceObjectStore)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mSourceIndex)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(IDBCursor)
MOZ_ASSERT_IF(!tmp->mHaveCachedKey, tmp->mCachedKey.isUndefined());
MOZ_ASSERT_IF(!tmp->mHaveCachedPrimaryKey,
tmp->mCachedPrimaryKey.isUndefined());
MOZ_ASSERT_IF(!tmp->mHaveCachedValue, tmp->mCachedValue.isUndefined());
NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mScriptOwner)
NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mCachedKey)
NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mCachedPrimaryKey)
NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mCachedValue)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(IDBCursor)
// Don't unlink mRequest, mSourceObjectStore, or mSourceIndex!
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
tmp->DropJSObjects();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
JSObject*
IDBCursor::WrapObject(JSContext* aCx)
{
AssertIsOnOwningThread();
switch (mType) {
case Type_ObjectStore:
case Type_Index:
return IDBCursorWithValueBinding::Wrap(aCx, this);
case Type_ObjectStoreKey:
case Type_IndexKey:
return IDBCursorBinding::Wrap(aCx, this);
default:
MOZ_CRASH("Bad type!");
}
}
} // namespace indexedDB
} // namespace dom
} // namespace mozilla