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/*
* Copyright (C) 2010 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 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.
*/
#ifndef HTMLEntitySearch_h
#define HTMLEntitySearch_h
#include "wtf/Allocator.h"
#include "wtf/text/WTFString.h"
namespace blink {
struct HTMLEntityTableEntry;
class HTMLEntitySearch {
STACK_ALLOCATED();
public:
HTMLEntitySearch();
void advance(UChar);
bool isEntityPrefix() const { return !!m_first; }
int currentLength() const { return m_currentLength; }
const HTMLEntityTableEntry* mostRecentMatch() const { return m_mostRecentMatch; }
private:
enum CompareResult {
Before,
Prefix,
After,
};
CompareResult compare(const HTMLEntityTableEntry*, UChar) const;
const HTMLEntityTableEntry* findFirst(UChar) const;
const HTMLEntityTableEntry* findLast(UChar) const;
void fail()
{
m_first = 0;
m_last = 0;
}
int m_currentLength;
const HTMLEntityTableEntry* m_mostRecentMatch;
const HTMLEntityTableEntry* m_first;
const HTMLEntityTableEntry* m_last;
};
} // namespace blink
#endif