73 lines
2.7 KiB
C++
73 lines
2.7 KiB
C++
/*
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* Copyright (C) 2016-2021 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "IDLTypes.h"
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#include "JSDOMConvertBase.h"
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namespace WebCore {
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template<typename IDLType>
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struct VariadicConverter {
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using Item = typename IDLType::ImplementationType;
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static std::optional<Item> convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value)
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{
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auto& vm = JSC::getVM(&lexicalGlobalObject);
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auto scope = DECLARE_THROW_SCOPE(vm);
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auto result = Converter<IDLType>::convert(lexicalGlobalObject, value);
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RETURN_IF_EXCEPTION(scope, std::nullopt);
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return result;
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}
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};
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template<typename IDLType> Vector<typename VariadicConverter<IDLType>::Item> convertVariadicArguments(JSC::JSGlobalObject& lexicalGlobalObject, JSC::CallFrame& callFrame, size_t startIndex)
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{
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auto& vm = JSC::getVM(&lexicalGlobalObject);
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auto scope = DECLARE_THROW_SCOPE(vm);
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size_t length = callFrame.argumentCount();
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if (startIndex >= length)
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return { };
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Vector<typename VariadicConverter<IDLType>::Item> result;
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result.reserveInitialCapacity(length - startIndex);
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for (size_t i = startIndex; i < length; ++i) {
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auto value = VariadicConverter<IDLType>::convert(lexicalGlobalObject, callFrame.uncheckedArgument(i));
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EXCEPTION_ASSERT_UNUSED(scope, !!scope.exception() == !value);
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if (!value)
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return { };
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result.uncheckedAppend(WTFMove(*value));
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}
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return result;
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}
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} // namespace WebCore
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