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/*
* Copyright (C) 2026 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. AND ITS CONTRIBUTORS ``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 ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR 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 "CustomFunctionRegistry.h"
namespace WebCore {
namespace Style {
WTF_MAKE_TZONE_ALLOCATED_IMPL(CustomFunction);
WTF_MAKE_TZONE_ALLOCATED_IMPL(CustomFunctionRegistry);
CustomFunction::CustomFunction(const AtomString& name, const Vector<StyleRuleFunction::Parameter>& parameters, const StyleProperties& properties)
: name(name)
, parameters(parameters)
, properties(properties)
{
}
void CustomFunctionRegistry::registerFunction(const StyleRuleFunction& function, const Vector<Ref<const StyleRuleFunctionDeclarations>>& declarationsList)
{
if (declarationsList.isEmpty())
return;
auto mergedProperties = [&]() -> Ref<const StyleProperties> {
if (declarationsList.size() == 1)
return declarationsList.first()->properties();
auto mutableProperties = MutableStyleProperties::create();
for (auto& declarations : declarationsList) {
Ref properties = declarations->properties();
mutableProperties->mergeAndOverrideOnConflict(properties.get());
}
return mutableProperties->immutableCopy();
};
auto customFunction = makeUniqueRef<CustomFunction>(function.name(), function.parameters(), mergedProperties());
// Last function with the same name wins.
m_functions.set(function.name(), WTF::move(customFunction));
}
const CustomFunction* CustomFunctionRegistry::functionForName(const AtomString& name) const
{
return m_functions.get(name);
}
}
}
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