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/*
* Copyright (C) 2024 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:
* 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,
* 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.
*/
#include "config.h"
#include "CSSCalcParser.h"
#include "CSSCalcSymbolsAllowed.h"
#include "CSSCalcValue.h"
#include "CSSParserMode.h"
#include "Logging.h"
namespace WebCore {
namespace CSSPropertyParserHelpers {
CalcParser::CalcParser(CSSParserTokenRange& range, CalculationCategory destinationCategory, CSSCalcSymbolsAllowed symbolsAllowed, CSSPropertyParserOptions options)
: m_sourceRange(range)
, m_range(range)
{
auto functionId = range.peek().functionId();
if (CSSCalcValue::isCalcFunction(functionId))
m_value = CSSCalcValue::create(functionId, consumeFunction(m_range), destinationCategory, options.valueRange, WTFMove(symbolsAllowed), options.negativePercentage == NegativePercentagePolicy::Allow);
}
RefPtr<CSSPrimitiveValue> CalcParser::consumeValue()
{
if (!m_value)
return nullptr;
m_sourceRange = m_range;
return CSSPrimitiveValue::create(m_value.releaseNonNull());
}
RefPtr<CSSPrimitiveValue> CalcParser::consumeValueIfCategory(CalculationCategory category)
{
if (m_value && m_value->category() != category) {
LOG_WITH_STREAM(Calc, stream << "CalcParser::consumeValueIfCategory - failing because calc category " << m_value->category() << " does not match requested category " << category);
return nullptr;
}
return consumeValue();
}
bool canConsumeCalcValue(CalculationCategory category, CSSPropertyParserOptions options)
{
if (category == CalculationCategory::Length || category == CalculationCategory::Percent || category == CalculationCategory::PercentLength)
return true;
if (options.parserMode != SVGAttributeMode)
return false;
if (category == CalculationCategory::Number || category == CalculationCategory::PercentNumber)
return true;
return false;
}
RefPtr<CSSCalcValue> consumeCalcRawWithKnownTokenTypeFunction(CSSParserTokenRange& range, CalculationCategory category, CSSCalcSymbolsAllowed symbolsAllowed, CSSPropertyParserOptions options)
{
ASSERT(range.peek().type() == FunctionToken);
auto functionId = range.peek().functionId();
if (!CSSCalcValue::isCalcFunction(functionId))
return nullptr;
RefPtr calcValue = CSSCalcValue::create(functionId, consumeFunction(range), category, options.valueRange, WTFMove(symbolsAllowed));
if (calcValue && calcValue->category() == category)
return calcValue;
return nullptr;
}
} // namespace CSSPropertyParserHelpers
} // namespace WebCore
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