70 lines
2.7 KiB
C++
70 lines
2.7 KiB
C++
/*
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* Copyright (C) 2015 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(CONTENT_EXTENSIONS)
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#include "ContentExtensionRule.h"
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#include "ContentExtensionsDebugging.h"
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#include "DFABytecode.h"
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#include <wtf/DataLog.h>
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#include <wtf/HashSet.h>
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namespace WebCore {
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namespace ContentExtensions {
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class WEBCORE_EXPORT DFABytecodeInterpreter {
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public:
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DFABytecodeInterpreter(const DFABytecode* bytecode, unsigned bytecodeLength)
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: m_bytecode(bytecode)
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, m_bytecodeLength(bytecodeLength)
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{
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}
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typedef HashSet<uint64_t, DefaultHash<uint64_t>, WTF::UnsignedWithZeroKeyHashTraits<uint64_t>> Actions;
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Actions interpret(const CString&, uint16_t flags);
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Actions interpretWithConditions(const CString&, uint16_t flags, const DFABytecodeInterpreter::Actions& conditionActions);
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Actions actionsMatchingEverything();
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private:
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void interpretAppendAction(unsigned& programCounter, Actions&, bool ifCondition);
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void interpretTestFlagsAndAppendAction(unsigned& programCounter, uint16_t flags, Actions&, bool ifCondition);
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template<bool caseSensitive>
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void interpetJumpTable(const char* url, uint32_t& urlIndex, uint32_t& programCounter, bool& urlIndexIsAfterEndOfString);
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const DFABytecode* m_bytecode;
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const unsigned m_bytecodeLength;
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const DFABytecodeInterpreter::Actions* m_topURLActions { nullptr };
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};
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} // namespace ContentExtensions
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} // namespace WebCore
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#endif // ENABLE(CONTENT_EXTENSIONS)
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