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/*
* Copyright (C) 2013 Google, 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 GOOGLE 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 GOOGLE 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.
*/
#ifndef HTMLIdentifier_h
#define HTMLIdentifier_h
#if ENABLE(THREADED_HTML_PARSER)
#include <wtf/text/WTFString.h>
namespace WebCore {
class QualifiedName;
enum CharacterWidth {
Likely8Bit,
Force8Bit,
Force16Bit
};
class HTMLIdentifier {
public:
HTMLIdentifier() : m_index(0) { }
template<size_t inlineCapacity>
HTMLIdentifier(const Vector<UChar, inlineCapacity>& vector, CharacterWidth width)
: m_index(findIndex(vector.data(), vector.size()))
{
if (m_index != invalidIndex)
return;
if (width == Likely8Bit)
m_string = StringImpl::create8BitIfPossible(vector);
else if (width == Force8Bit)
m_string = String::make8BitFrom16BitSource(vector);
else
m_string = String(vector);
}
// asString should only be used on the main thread.
const String& asString() const;
// asStringImpl() is safe to call from any thread.
const StringImpl* asStringImpl() const;
static void init();
bool isSafeToSendToAnotherThread() const { return m_string.isSafeToSendToAnotherThread(); }
#ifndef NDEBUG
static bool hasIndex(const StringImpl*);
#endif
private:
static const unsigned invalidIndex = -1;
static unsigned maxNameLength;
static unsigned findIndex(const UChar* characters, unsigned length);
static void addNames(QualifiedName** names, unsigned namesCount, unsigned indexOffset);
// FIXME: This could be a union.
unsigned m_index;
String m_string;
};
}
#endif // ENABLE(THREADED_HTML_PARSER)
#endif
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