Source/WebCore/style/StyleLocalPropertyRegistry.cpp

/*
 * Copyright (C) 2026 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *    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,
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#include "config.h"
#include "StyleLocalPropertyRegistry.h"

#include "CSSCustomPropertySyntax.h"
#include "CSSParserIdioms.h"
#include "CSSPropertyParser.h"

namespace WebCore {
namespace Style {

const CSSRegisteredCustomProperty* LocalPropertyRegistry::get(const AtomString& name) const
{
    ASSERT(isCustomPropertyName(name) || name == "result"_s);
    if (auto* property = m_properties.get(name))
        return property;
    // result belongs to the function being evaluated, not to an enclosing one.
    if (m_enclosing && name != "result"_s)
        return m_enclosing->get(name);
    return nullptr;
}

bool LocalPropertyRegistry::declares(const AtomString& name) const
{
    return m_properties.contains(name);
}

bool LocalPropertyRegistry::isInherited(const AtomString& name) const
{
    auto* registered = get(name);
    return registered ? registered->inherits : true;
}

void LocalPropertyRegistry::add(CSSRegisteredCustomProperty&& property)
{
    m_properties.set(property.name, makeUniqueRef<CSSRegisteredCustomProperty>(WTF::move(property)));
}

} // namespace Style
} // namespace WebCore