ladybird/Libraries/LibWeb/CSS/StyleValues/TreeCountingFunctionStyleValue.h
Tim Ledbetter a27d269721 LibWeb: Pass StringBuilder around during StyleValue serialization
Previously, some StyleValues created a large number of intermediate
strings during serialization. Passing a StringBUilder into the
serialization function allows us to avoid a large number of these
unnecessary allocations.
2026-01-09 10:00:58 +01:00

52 lines
1.6 KiB
C++

/*
* Copyright (c) 2025, Callum Law <callumlaw1709@outlook.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/CSS/StyleValues/AbstractNonMathCalcFunctionStyleValue.h>
namespace Web::CSS {
class TreeCountingFunctionStyleValue final : public AbstractNonMathCalcFunctionStyleValue {
public:
enum class TreeCountingFunction : u8 {
SiblingCount,
SiblingIndex
};
enum class ComputedType : u8 {
Number,
Integer
};
static ValueComparingNonnullRefPtr<TreeCountingFunctionStyleValue const> create(TreeCountingFunction function, ComputedType computed_type)
{
return adopt_ref(*new (nothrow) TreeCountingFunctionStyleValue(function, computed_type));
}
virtual ~TreeCountingFunctionStyleValue() override = default;
virtual void serialize(StringBuilder&, SerializationMode) const override;
size_t resolve(DOM::AbstractElement const&) const;
virtual RefPtr<CalculationNode const> resolve_to_calculation_node(CalculationContext const&, CalculationResolutionContext const&) const override;
virtual ValueComparingNonnullRefPtr<StyleValue const> absolutized(ComputationContext const&) const override;
virtual bool equals(StyleValue const& other) const override;
private:
TreeCountingFunctionStyleValue(TreeCountingFunction function, ComputedType computed_type)
: AbstractNonMathCalcFunctionStyleValue(Type::TreeCountingFunction)
, m_function(function)
, m_computed_type(computed_type)
{
}
TreeCountingFunction m_function;
ComputedType m_computed_type;
};
}