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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 THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_ENTITY_SEARCH_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_PARSER_HTML_ENTITY_SEARCH_H_
#include "third_party/blink/renderer/platform/wtf/allocator.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
struct HTMLEntityTableEntry;
class HTMLEntitySearch {
STACK_ALLOCATED();
public:
HTMLEntitySearch();
void Advance(UChar);
bool IsEntityPrefix() const { return !!first_; }
int CurrentLength() const { return current_length_; }
const HTMLEntityTableEntry* MostRecentMatch() const {
return most_recent_match_;
}
private:
enum CompareResult {
kBefore,
kPrefix,
kAfter,
};
CompareResult Compare(const HTMLEntityTableEntry*, UChar) const;
const HTMLEntityTableEntry* FindFirst(UChar) const;
const HTMLEntityTableEntry* FindLast(UChar) const;
void Fail() {
first_ = nullptr;
last_ = nullptr;
}
int current_length_;
const HTMLEntityTableEntry* most_recent_match_;
const HTMLEntityTableEntry* first_;
const HTMLEntityTableEntry* last_;
};
} // namespace blink
#endif