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/*
* Copyright (C) 2016-2021 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.
*/
#pragma once
#include "IDLTypes.h"
#include "JSDOMConvertBase.h"
#include "wtf/FixedVector.h"
namespace WebCore {
template<typename IDLType>
struct VariadicConverter {
using Item = typename IDLType::ImplementationType;
static std::optional<Item> convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value)
{
auto& vm = JSC::getVM(&lexicalGlobalObject);
auto scope = DECLARE_THROW_SCOPE(vm);
auto result = Converter<IDLType>::convert(lexicalGlobalObject, value);
RETURN_IF_EXCEPTION(scope, std::nullopt);
return result;
}
};
template<typename IDLType> FixedVector<typename VariadicConverter<IDLType>::Item> convertVariadicArguments(JSC::JSGlobalObject& lexicalGlobalObject, JSC::CallFrame& callFrame, size_t startIndex)
{
auto& vm = JSC::getVM(&lexicalGlobalObject);
auto scope = DECLARE_THROW_SCOPE(vm);
size_t length = callFrame.argumentCount();
if (startIndex >= length)
return {};
FixedVector<typename VariadicConverter<IDLType>::Item> result(length - startIndex);
size_t resultIndex = 0;
for (size_t i = startIndex; i < length; ++i) {
auto value = VariadicConverter<IDLType>::convert(lexicalGlobalObject, callFrame.uncheckedArgument(i));
EXCEPTION_ASSERT_UNUSED(scope, !!scope.exception() == !value);
if (!value)
return {};
result[resultIndex] = WTFMove(*value);
resultIndex++;
}
return result;
}
} // namespace WebCore
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