/* * Copyright (C) 2015 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #if ENABLE(INDEXED_DATABASE) #include "IDBCursorInfo.h" #include "IDBKeyData.h" #include "MemoryCursor.h" #include <wtf/Optional.h> namespace WebCore { namespace IDBServer { class MemoryObjectStore; class MemoryObjectStoreCursor : public MemoryCursor { public: MemoryObjectStoreCursor(MemoryObjectStore&, const IDBCursorInfo&); void objectStoreCleared(); void keyDeleted(const IDBKeyData&); void keyAdded(IDBKeyDataSet::iterator); private: void currentData(IDBGetResult&) final; void iterate(const IDBKeyData&, const IDBKeyData& primaryKey, uint32_t count, IDBGetResult&) final; void setFirstInRemainingRange(IDBKeyDataSet&); void setForwardIteratorFromRemainingRange(IDBKeyDataSet&); void setReverseIteratorFromRemainingRange(IDBKeyDataSet&); void incrementForwardIterator(IDBKeyDataSet&, const IDBKeyData&, uint32_t count); void incrementReverseIterator(IDBKeyDataSet&, const IDBKeyData&, uint32_t count); bool hasValidPosition() const; MemoryObjectStore& m_objectStore; IDBKeyRangeData m_remainingRange; std::optional<IDBKeyDataSet::iterator> m_iterator; IDBKeyData m_currentPositionKey; }; } // namespace IDBServer } // namespace WebCore #endif // ENABLE(INDEXED_DATABASE)