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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"
#include "JSDOMGlobalObject.h"
namespace WebCore {
template<typename ImplementationClass> struct JSDOMCallbackConverterTraits;
// An example of an implementation of the traits.
//
// template<> struct JSDOMCallbackConverterTraits<JSNodeFilter> {
// using Base = NodeFilter;
// };
//
// These will be produced by the code generator.
template<typename T> struct Converter<IDLCallbackFunction<T>> : DefaultConverter<IDLCallbackFunction<T>> {
static constexpr bool conversionHasSideEffects = false;
using Result = ConversionResult<IDLCallbackFunction<T>>;
template<typename ExceptionThrower = DefaultExceptionThrower>
static Result convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, JSDOMGlobalObject& globalObject, ExceptionThrower&& exceptionThrower = ExceptionThrower())
{
JSC::VM& vm = JSC::getVM(&lexicalGlobalObject);
auto scope = DECLARE_THROW_SCOPE(vm);
if (!value.isCallable()) {
exceptionThrower(lexicalGlobalObject, scope);
return Result::exception();
}
return Result { T::create(JSC::asObject(value), &globalObject) };
}
};
template<typename T> struct JSConverter<IDLCallbackFunction<T>> {
static constexpr bool needsState = false;
static constexpr bool needsGlobalObject = false;
using Base = typename JSDOMCallbackConverterTraits<T>::Base;
static JSC::JSValue convert(const Base& value)
{
return toJS(Detail::getPtrOrRef(value));
}
static JSC::JSValue convert(const Ref<Base>& value)
{
return toJS(Detail::getPtrOrRef(value));
}
static JSC::JSValue convertNewlyCreated(Ref<Base>&& value)
{
return toJSNewlyCreated(std::forward<Base>(value));
}
};
// Specialization of nullable callback function to account for unconventional base type input.
template<typename T> struct JSConverter<IDLNullable<IDLCallbackFunction<T>>> {
static constexpr bool needsState = false;
static constexpr bool needsGlobalObject = false;
using Base = typename JSDOMCallbackConverterTraits<T>::Base;
static JSC::JSValue convert(const Base* value)
{
if (!value)
return JSC::jsNull();
return toJS<IDLCallbackFunction<T>>(*value);
}
static JSC::JSValue convert(const RefPtr<Base>& value)
{
if (!value)
return JSC::jsNull();
return toJS<IDLCallbackFunction<T>>(*value);
}
static JSC::JSValue convertNewlyCreated(RefPtr<Base>&& value)
{
if (!value)
return JSC::jsNull();
return toJSNewlyCreated<IDLCallbackFunction<T>>(value.releaseNonNull());
}
};
template<typename T> struct Converter<IDLCallbackInterface<T>> : DefaultConverter<IDLCallbackInterface<T>> {
using Result = ConversionResult<IDLCallbackInterface<T>>;
template<typename ExceptionThrower = DefaultExceptionThrower>
static Result convert(JSC::JSGlobalObject& lexicalGlobalObject, JSC::JSValue value, JSDOMGlobalObject& globalObject, ExceptionThrower&& exceptionThrower = ExceptionThrower())
{
JSC::VM& vm = JSC::getVM(&lexicalGlobalObject);
auto scope = DECLARE_THROW_SCOPE(vm);
if (!value.isObject()) {
exceptionThrower(lexicalGlobalObject, scope);
return Result::exception();
}
return Result { T::create(JSC::asObject(value), &globalObject) };
}
};
template<typename T> struct JSConverter<IDLCallbackInterface<T>> {
static constexpr bool needsState = false;
static constexpr bool needsGlobalObject = false;
using Base = typename JSDOMCallbackConverterTraits<T>::Base;
static JSC::JSValue convert(const Base& value)
{
return toJS(Detail::getPtrOrRef(value));
}
static JSC::JSValue convert(const Ref<Base>& value)
{
return toJS(Detail::getPtrOrRef(value));
}
static JSC::JSValue convertNewlyCreated(Ref<Base>&& value)
{
return toJSNewlyCreated(std::forward<Base>(value));
}
};
// Specialization of nullable callback interface to account for unconventional base type input.
template<typename T> struct JSConverter<IDLNullable<IDLCallbackInterface<T>>> {
static constexpr bool needsState = false;
static constexpr bool needsGlobalObject = false;
using Base = typename JSDOMCallbackConverterTraits<T>::Base;
static JSC::JSValue convert(const Base* value)
{
if (!value)
return JSC::jsNull();
return toJS<IDLCallbackInterface<T>>(*value);
}
static JSC::JSValue convert(const RefPtr<Base>& value)
{
if (!value)
return JSC::jsNull();
return toJS<IDLCallbackInterface<T>>(*value);
}
static JSC::JSValue convertNewlyCreated(RefPtr<Base>&& value)
{
if (!value)
return JSC::jsNull();
return toJSNewlyCreated<IDLCallbackInterface<T>>(value.releaseNonNull());
}
};
} // namespace WebCore
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