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/*
* 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#ifndef DFABytecodeInterpreter_h
#define DFABytecodeInterpreter_h
#if ENABLE(CONTENT_EXTENSIONS)
#include "ContentExtensionRule.h"
#include "ContentExtensionsDebugging.h"
#include "DFABytecode.h"
#include <wtf/DataLog.h>
#include <wtf/HashSet.h>
#include <wtf/Vector.h>
namespace WebCore {
namespace ContentExtensions {
class WEBCORE_EXPORT DFABytecodeInterpreter {
public:
DFABytecodeInterpreter(const DFABytecode* bytecode, unsigned bytecodeLength)
: m_bytecode(bytecode)
, m_bytecodeLength(bytecodeLength)
{
}
typedef HashSet<uint64_t, DefaultHash<uint64_t>::Hash, WTF::UnsignedWithZeroKeyHashTraits<uint64_t>> Actions;
Actions interpret(const CString&, uint16_t flags);
Actions interpretWithDomains(const CString&, uint16_t flags, const DFABytecodeInterpreter::Actions& domainActions);
Actions actionsMatchingEverything();
private:
void interpretAppendAction(unsigned& programCounter, Actions&, bool ifDomain);
void interpretTestFlagsAndAppendAction(unsigned& programCounter, uint16_t flags, Actions&, bool ifDomain);
template<bool caseSensitive>
void interpetJumpTable(const char* url, uint32_t& urlIndex, uint32_t& programCounter, bool& urlIndexIsAfterEndOfString);
const DFABytecode* m_bytecode;
const unsigned m_bytecodeLength;
const DFABytecodeInterpreter::Actions* m_domainActions { nullptr };
};
} // namespace ContentExtensions
} // namespace WebCore
#endif // ENABLE(CONTENT_EXTENSIONS)
#endif // DFABytecodeInterpreter_h
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