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// Copyright 2014 The Chromium Authors. All rights reserved.
// Copyright (C) 2016 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:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
// OWNER 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.
#pragma once
#include "CSSParserToken.h"
#include "CSSParserTokenRange.h"
#include <wtf/text/WTFString.h>
namespace WebCore {
class Document;
struct SizesCalcValue {
double value;
bool isLength;
UChar operation;
SizesCalcValue()
: value(0)
, isLength(false)
, operation(0)
{
}
SizesCalcValue(double numericValue, bool length)
: value(numericValue)
, isLength(length)
, operation(0)
{
}
};
class SizesCalcParser {
public:
SizesCalcParser(CSSParserTokenRange, const Document&);
float result() const;
bool isValid() const { return m_isValid; }
private:
bool calcToReversePolishNotation(CSSParserTokenRange);
bool calculate();
void appendNumber(const CSSParserToken&);
bool appendLength(const CSSParserToken&);
bool handleOperator(Vector<CSSParserToken>& stack, const CSSParserToken&);
void appendOperator(const CSSParserToken&);
Vector<SizesCalcValue> m_valueList;
bool m_isValid;
float m_result;
const Document& m_document;
};
} // namespace WebCore
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