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/*
* Copyright (C) 2013-2017 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.
*/
#include "config.h"
#include "JSDOMPromiseDeferred.h"
#include "DOMWindow.h"
#include "JSDOMPromise.h"
#include "JSDOMWindow.h"
#include <JavaScriptCore/BuiltinNames.h>
#include <JavaScriptCore/Exception.h>
#include <JavaScriptCore/JSONObject.h>
#include <JavaScriptCore/JSPromiseConstructor.h>
#include <JavaScriptCore/Strong.h>
namespace WebCore {
using namespace JSC;
JSC::JSValue DeferredPromise::promise() const
{
ASSERT(deferred());
return deferred();
}
void DeferredPromise::callFunction(JSGlobalObject& lexicalGlobalObject, ResolveMode mode, JSValue resolution)
{
if (shouldIgnoreRequestToFulfill())
return;
if (activeDOMObjectsAreSuspended()) {
JSC::Strong<JSC::Unknown, ShouldStrongDestructorGrabLock::Yes> strongResolution(lexicalGlobalObject.vm(), resolution);
scriptExecutionContext()->eventLoop().queueTask(TaskSource::Networking, *scriptExecutionContext(), [this, protectedThis = makeRef(*this), mode, strongResolution = WTFMove(strongResolution)]() mutable {
if (!shouldIgnoreRequestToFulfill())
callFunction(*globalObject(), mode, strongResolution.get());
});
return;
}
// FIXME: We could have error since any JS call can throw stack-overflow errors.
// https://bugs.webkit.org/show_bug.cgi?id=203402
switch (mode) {
case ResolveMode::Resolve:
deferred()->resolve(&lexicalGlobalObject, resolution);
break;
case ResolveMode::Reject:
deferred()->reject(&lexicalGlobalObject, resolution);
break;
}
if (m_mode == Mode::ClearPromiseOnResolve)
clear();
}
void DeferredPromise::whenSettled(Function<void()>&& callback)
{
if (shouldIgnoreRequestToFulfill())
return;
if (activeDOMObjectsAreSuspended()) {
scriptExecutionContext()->eventLoop().queueTask(TaskSource::Networking, *scriptExecutionContext(), [this, protectedThis = makeRef(*this), callback = WTFMove(callback)]() mutable {
whenSettled(WTFMove(callback));
});
return;
}
DOMPromise::whenPromiseIsSettled(globalObject(), deferred(), WTFMove(callback));
}
void DeferredPromise::reject()
{
if (shouldIgnoreRequestToFulfill())
return;
ASSERT(deferred());
ASSERT(m_globalObject);
auto& lexicalGlobalObject = *m_globalObject;
JSC::JSLockHolder locker(&lexicalGlobalObject);
reject(lexicalGlobalObject, JSC::jsUndefined());
}
void DeferredPromise::reject(std::nullptr_t)
{
if (shouldIgnoreRequestToFulfill())
return;
ASSERT(deferred());
ASSERT(m_globalObject);
auto& lexicalGlobalObject = *m_globalObject;
JSC::JSLockHolder locker(&lexicalGlobalObject);
reject(lexicalGlobalObject, JSC::jsNull());
}
void DeferredPromise::reject(Exception exception)
{
if (shouldIgnoreRequestToFulfill())
return;
ASSERT(deferred());
ASSERT(m_globalObject);
auto& lexicalGlobalObject = *m_globalObject;
JSC::JSLockHolder locker(&lexicalGlobalObject);
if (exception.code() == ExistingExceptionError) {
auto scope = DECLARE_CATCH_SCOPE(lexicalGlobalObject.vm());
EXCEPTION_ASSERT(scope.exception());
auto error = scope.exception()->value();
scope.clearException();
reject<IDLAny>(error);
return;
}
auto scope = DECLARE_THROW_SCOPE(lexicalGlobalObject.vm());
auto error = createDOMException(lexicalGlobalObject, WTFMove(exception));
if (UNLIKELY(scope.exception())) {
ASSERT(isTerminatedExecutionException(lexicalGlobalObject.vm(), scope.exception()));
return;
}
reject(lexicalGlobalObject, error);
}
void DeferredPromise::reject(ExceptionCode ec, const String& message)
{
if (shouldIgnoreRequestToFulfill())
return;
ASSERT(deferred());
ASSERT(m_globalObject);
auto& lexicalGlobalObject = *m_globalObject;
JSC::JSLockHolder locker(&lexicalGlobalObject);
if (ec == ExistingExceptionError) {
auto scope = DECLARE_CATCH_SCOPE(lexicalGlobalObject.vm());
EXCEPTION_ASSERT(scope.exception());
auto error = scope.exception()->value();
scope.clearException();
reject<IDLAny>(error);
return;
}
auto scope = DECLARE_THROW_SCOPE(lexicalGlobalObject.vm());
auto error = createDOMException(&lexicalGlobalObject, ec, message);
if (UNLIKELY(scope.exception())) {
ASSERT(isTerminatedExecutionException(lexicalGlobalObject.vm(), scope.exception()));
return;
}
reject(lexicalGlobalObject, error);
}
void DeferredPromise::reject(const JSC::PrivateName& privateName)
{
if (shouldIgnoreRequestToFulfill())
return;
ASSERT(deferred());
ASSERT(m_globalObject);
JSC::JSGlobalObject* lexicalGlobalObject = m_globalObject.get();
JSC::JSLockHolder locker(lexicalGlobalObject);
reject(*lexicalGlobalObject, JSC::Symbol::create(lexicalGlobalObject->vm(), privateName.uid()));
}
void rejectPromiseWithExceptionIfAny(JSC::JSGlobalObject& lexicalGlobalObject, JSDOMGlobalObject& globalObject, JSPromise& promise)
{
VM& vm = lexicalGlobalObject.vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
if (LIKELY(!scope.exception()))
return;
JSValue error = scope.exception()->value();
scope.clearException();
DeferredPromise::create(globalObject, promise)->reject<IDLAny>(error);
}
Ref<DeferredPromise> createDeferredPromise(JSC::JSGlobalObject&, JSDOMWindow& domWindow)
{
auto* promise = JSPromise::create(domWindow.vm(), domWindow.promiseStructure());
RELEASE_ASSERT(promise);
return DeferredPromise::create(domWindow, *promise);
}
JSC::EncodedJSValue createRejectedPromiseWithTypeError(JSC::JSGlobalObject& lexicalGlobalObject, const String& errorMessage, RejectedPromiseWithTypeErrorCause cause)
{
auto& globalObject = lexicalGlobalObject;
auto promiseConstructor = globalObject.promiseConstructor();
auto rejectFunction = promiseConstructor->get(&lexicalGlobalObject, lexicalGlobalObject.vm().propertyNames->builtinNames().rejectPrivateName());
auto* rejectionValue = static_cast<ErrorInstance*>(createTypeError(&lexicalGlobalObject, errorMessage));
if (cause == RejectedPromiseWithTypeErrorCause::NativeGetter)
rejectionValue->setNativeGetterTypeError();
CallData callData;
auto callType = getCallData(lexicalGlobalObject.vm(), rejectFunction, callData);
ASSERT(callType != CallType::None);
MarkedArgumentBuffer arguments;
arguments.append(rejectionValue);
ASSERT(!arguments.hasOverflowed());
return JSValue::encode(call(&lexicalGlobalObject, rejectFunction, callType, callData, promiseConstructor, arguments));
}
static inline JSC::JSValue parseAsJSON(JSC::JSGlobalObject* lexicalGlobalObject, const String& data)
{
JSC::JSLockHolder lock(lexicalGlobalObject);
return JSC::JSONParse(lexicalGlobalObject, data);
}
void fulfillPromiseWithJSON(Ref<DeferredPromise>&& promise, const String& data)
{
JSC::JSValue value = parseAsJSON(promise->globalObject(), data);
if (!value)
promise->reject(SyntaxError);
else
promise->resolve<IDLAny>(value);
}
void fulfillPromiseWithArrayBuffer(Ref<DeferredPromise>&& promise, ArrayBuffer* arrayBuffer)
{
if (!arrayBuffer) {
promise->reject<IDLAny>(createOutOfMemoryError(promise->globalObject()));
return;
}
promise->resolve<IDLInterface<ArrayBuffer>>(*arrayBuffer);
}
void fulfillPromiseWithArrayBuffer(Ref<DeferredPromise>&& promise, const void* data, size_t length)
{
fulfillPromiseWithArrayBuffer(WTFMove(promise), ArrayBuffer::tryCreate(data, length).get());
}
}