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/*
* Copyright (C) 2016 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"
namespace WebCore {
namespace Detail {
template<typename IDLType>
struct VariadicConverterBase;
template<typename IDLType>
struct VariadicConverterBase {
using Item = typename IDLType::ImplementationType;
static std::optional<Item> convert(JSC::ExecState& state, JSC::JSValue value)
{
auto& vm = state.vm();
auto scope = DECLARE_THROW_SCOPE(vm);
auto result = Converter<IDLType>::convert(state, value);
RETURN_IF_EXCEPTION(scope, std::nullopt);
return WTFMove(result);
}
};
template<typename T>
struct VariadicConverterBase<IDLInterface<T>> {
using Item = std::reference_wrapper<T>;
static std::optional<Item> convert(JSC::ExecState& state, JSC::JSValue value)
{
auto* result = Converter<IDLInterface<T>>::convert(state, value);
if (!result)
return std::nullopt;
return std::optional<Item>(*result);
}
};
template<typename IDLType>
struct VariadicConverter : VariadicConverterBase<IDLType> {
using Item = typename VariadicConverterBase<IDLType>::Item;
using Container = Vector<Item>;
struct Result {
size_t argumentIndex;
std::optional<Container> arguments;
};
};
}
template<typename IDLType> typename Detail::VariadicConverter<IDLType>::Result convertVariadicArguments(JSC::ExecState& state, size_t startIndex)
{
size_t length = state.argumentCount();
if (startIndex > length)
return { 0, std::nullopt };
typename Detail::VariadicConverter<IDLType>::Container result;
result.reserveInitialCapacity(length - startIndex);
for (size_t i = startIndex; i < length; ++i) {
auto value = Detail::VariadicConverter<IDLType>::convert(state, state.uncheckedArgument(i));
if (!value)
return { i, std::nullopt };
result.uncheckedAppend(WTFMove(*value));
}
return { length, WTFMove(result) };
}
} // namespace WebCore
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