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/*
* Copyright (C) 2024 Samuel Weinig <sam@webkit.org>
*
* 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.
*/
#pragma once
#include "CSSPrimitiveNumericRange.h"
#include "CSSToLengthConversionData.h"
#include <optional>
namespace WebCore {
namespace Calculation {
enum class Category : uint8_t;
}
class CSSCalcSymbolTable;
namespace CSSCalc {
struct Anchor;
struct Tree;
struct EvaluationOptions {
// `category` represents the context in which the evaluation is taking place.
Calculation::Category category;
// `range` represents the allowed numeric range for the calculated result.
CSS::Range range;
// `conversionData` contains information needed to convert units into their canonical forms.
std::optional<CSSToLengthConversionData> conversionData;
// `symbolTable` contains information needed to convert unresolved symbols into numeric values.
const CSSCalcSymbolTable& symbolTable;
};
std::optional<double> evaluateDouble(const Tree&, const EvaluationOptions&);
std::optional<double> evaluateWithoutFallback(const Anchor&, const EvaluationOptions&);
} // namespace CSSCalc
} // namespace WebCore
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