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/*
* Copyright (C) 2024 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 "JSDOMConvertDictionary.h"
#include "JSDOMConvertNullable.h"
namespace WebCore {
namespace Detail {
template<typename IDL>
struct OptionalConversionType;
template<typename IDL>
struct OptionalConversionType {
using Type = typename IDLOptional<IDL>::ConversionResultType;
};
template<>
struct OptionalConversionType<IDLObject> {
using Type = std::optional<JSC::Strong<JSC::JSObject>>;
};
template<typename T>
struct OptionalConversionType<IDLDictionary<T>> {
using Type = std::conditional_t<std::is_default_constructible_v<T>, T, std::optional<T>>;
};
}
// `IDLOptional` is just like `IDLNullable`, but used in places that where the type is implicitly optional,
// like optional arguments to functions without default values, or non-required members of dictionaries
// without default values.
//
// As such, rather than checking `isUndefinedOrNull()`, IDLOptional uses `isUndefined()` matching what
// is needed in those cases.
template<typename IDL> struct Converter<IDLOptional<IDL>> : DefaultConverter<IDLOptional<IDL>> {
using ReturnType = typename Detail::OptionalConversionType<IDL>::Type;
using Result = ConversionResult<IDLOptional<IDL>>;
static Result convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value)
{
if (value.isUndefined())
return ReturnType { };
return WebCore::convert<IDL>(lexicalGlobalObject, value);
}
static Result convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, JSC::JSObject& thisObject)
{
if (value.isUndefined())
return ReturnType { };
return WebCore::convert<IDL>(lexicalGlobalObject, value, thisObject);
}
static Result convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, JSDOMGlobalObject& globalObject)
{
if (value.isUndefined())
return ReturnType { };
return WebCore::convert<IDL>(lexicalGlobalObject, value, globalObject);
}
template<ExceptionThrowerFunctor ExceptionThrower = DefaultExceptionThrower>
static Result convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, ExceptionThrower&& exceptionThrower)
{
if (value.isUndefined())
return ReturnType { };
return WebCore::convert<IDL>(lexicalGlobalObject, value, std::forward<ExceptionThrower>(exceptionThrower));
}
template<ExceptionThrowerFunctor ExceptionThrower = DefaultExceptionThrower>
static Result convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, JSC::JSObject& thisObject, ExceptionThrower&& exceptionThrower)
{
if (value.isUndefined())
return ReturnType { };
return WebCore::convert<IDL>(lexicalGlobalObject, value, thisObject, std::forward<ExceptionThrower>(exceptionThrower));
}
template<ExceptionThrowerFunctor ExceptionThrower = DefaultExceptionThrower>
static Result convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, JSDOMGlobalObject& globalObject, ExceptionThrower&& exceptionThrower)
{
if (value.isUndefined())
return ReturnType { };
return WebCore::convert<IDL>(lexicalGlobalObject, value, globalObject, std::forward<ExceptionThrower>(exceptionThrower));
}
};
// MARK: Helper functions for invoking an optional conversion.
template<typename IDL, DefaultValueFunctor<IDL> DefaultValueFunctor>
ConversionResult<IDL> convertOptionalWithDefault(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, DefaultValueFunctor&& defaultValue)
{
if (value.isUndefined())
return defaultValue();
return convert<IDL>(lexicalGlobalObject, value);
}
template<typename IDL, DefaultValueFunctor<IDL> DefaultValueFunctor>
ConversionResult<IDL> convertOptionalWithDefault(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, JSC::JSObject& thisObject, DefaultValueFunctor&& defaultValue)
{
if (value.isUndefined())
return defaultValue();
return convert<IDL>(lexicalGlobalObject, value, thisObject);
}
template<typename IDL, DefaultValueFunctor<IDL> DefaultValueFunctor>
ConversionResult<IDL> convertOptionalWithDefault(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, JSDOMGlobalObject& globalObject, DefaultValueFunctor&& defaultValue)
{
if (value.isUndefined())
return defaultValue();
return convert<IDL>(lexicalGlobalObject, value, globalObject);
}
template<typename IDL, DefaultValueFunctor<IDL> DefaultValueFunctor, ExceptionThrowerFunctor ExceptionThrower>
ConversionResult<IDL> convertOptionalWithDefault(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, DefaultValueFunctor&& defaultValue, ExceptionThrower&& exceptionThrower)
{
if (value.isUndefined())
return defaultValue();
return convert<IDL>(lexicalGlobalObject, value, std::forward<ExceptionThrower>(exceptionThrower));
}
template<typename IDL, DefaultValueFunctor<IDL> DefaultValueFunctor, ExceptionThrowerFunctor ExceptionThrower>
ConversionResult<IDL> convertOptionalWithDefault(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, JSC::JSObject& thisObject, DefaultValueFunctor&& defaultValue, ExceptionThrower&& exceptionThrower)
{
if (value.isUndefined())
return defaultValue();
return convert<IDL>(lexicalGlobalObject, value, thisObject, std::forward<ExceptionThrower>(exceptionThrower));
}
template<typename IDL, DefaultValueFunctor<IDL> DefaultValueFunctor, ExceptionThrowerFunctor ExceptionThrower>
ConversionResult<IDL> convertOptionalWithDefault(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, JSDOMGlobalObject& globalObject, DefaultValueFunctor&& defaultValue, ExceptionThrower&& exceptionThrower)
{
if (value.isUndefined())
return defaultValue();
return convert<IDL>(lexicalGlobalObject, value, globalObject, std::forward<ExceptionThrower>(exceptionThrower));
}
} // namespace WebCore
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