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ed2909674f
Registered custom properties only accept "computationally independent" values for their initial value
47 lines
1.8 KiB
C++
47 lines
1.8 KiB
C++
/*
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* Copyright (c) 2025, Sam Atkins <sam@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibWeb/CSS/StyleValues/StyleValue.h>
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namespace Web::CSS {
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// https://drafts.csswg.org/css-values-5/#pending-substitution-value
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class PendingSubstitutionStyleValue final : public StyleValueWithDefaultOperators<PendingSubstitutionStyleValue> {
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public:
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static ValueComparingNonnullRefPtr<PendingSubstitutionStyleValue> create(StyleValue const& original_shorthand_value)
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{
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return adopt_ref(*new (nothrow) PendingSubstitutionStyleValue(original_shorthand_value));
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}
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virtual ~PendingSubstitutionStyleValue() override = default;
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virtual void serialize(StringBuilder&, SerializationMode) const override { }
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virtual Vector<Parser::ComponentValue> tokenize() const override
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{
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// Not sure what to do here, but this isn't valid so returning GIV seems the most correct.
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return { Parser::ComponentValue { Parser::GuaranteedInvalidValue {} } };
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}
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StyleValue const& original_shorthand_value() const { return *m_original_shorthand_value; }
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// We shouldn't need to compare these, but in case we do: The nature of them is that their value is unknown, so
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// consider them all to be unique.
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bool properties_equal(PendingSubstitutionStyleValue const&) const { return false; }
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// NB: We should never be in a position where we need to check this
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virtual bool is_computationally_independent() const override { VERIFY_NOT_REACHED(); }
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private:
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explicit PendingSubstitutionStyleValue(StyleValue const& original_shorthand_value)
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: StyleValueWithDefaultOperators(Type::PendingSubstitution)
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, m_original_shorthand_value(original_shorthand_value)
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{
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}
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NonnullRefPtr<StyleValue const> m_original_shorthand_value;
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};
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}
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