--- /dev/null
+/*
+ * Copyright (C) 2013 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 "JSPromiseFunctions.h"
+
+#if ENABLE(PROMISES)
+
+#include "Error.h"
+#include "JSCJSValueInlines.h"
+#include "JSCellInlines.h"
+#include "JSPromise.h"
+#include "JSPromiseConstructor.h"
+#include "JSPromiseDeferred.h"
+#include "NumberObject.h"
+#include "StructureInlines.h"
+
+namespace JSC {
+
+// Deferred Construction Functions
+static EncodedJSValue JSC_HOST_CALL deferredConstructionFunction(ExecState* exec)
+{
+ JSObject* F = exec->callee();
+
+ VM& vm = exec->vm();
+
+ // 1. Set F's [[Resolve]] internal slot to resolve.
+ F->putDirect(vm, vm.propertyNames->resolvePrivateName, exec->argument(0));
+
+ // 2. Set F's [[Reject]] internal slot to reject.
+ F->putDirect(vm, vm.propertyNames->rejectPrivateName, exec->argument(1));
+
+ // 3. Return.
+ return JSValue::encode(jsUndefined());
+}
+
+JSFunction* createDeferredConstructionFunction(VM& vm, JSGlobalObject* globalObject)
+{
+ return JSFunction::create(vm, globalObject, 2, ASCIILiteral("DeferredConstructionFunction"), deferredConstructionFunction);
+}
+
+// Identity Functions
+
+static EncodedJSValue JSC_HOST_CALL identifyFunction(ExecState* exec)
+{
+ return JSValue::encode(exec->argument(0));
+}
+
+JSFunction* createIdentifyFunction(VM& vm, JSGlobalObject* globalObject)
+{
+ return JSFunction::create(vm, globalObject, 1, ASCIILiteral("IdentityFunction"), identifyFunction);
+}
+
+// Promise.All Countdown Functions
+
+static EncodedJSValue JSC_HOST_CALL promiseAllCountdownFunction(ExecState* exec)
+{
+ JSValue x = exec->argument(0);
+ VM& vm = exec->vm();
+ JSObject* F = exec->callee();
+
+ // 1. Let 'index' be the value of F's [[Index]] internal slot.
+ uint32_t index = F->get(exec, vm.propertyNames->indexPrivateName).asUInt32();
+
+ // 2. Let 'values' be the value of F's [[Values]] internal slot..
+ JSArray* values = jsCast<JSArray*>(F->get(exec, vm.propertyNames->valuesPrivateName));
+
+ // 3. Let 'deferred' be the value of F's [[Deferred]] internal slot.
+ JSPromiseDeferred* deferred = jsCast<JSPromiseDeferred*>(F->get(exec, vm.propertyNames->deferredPrivateName));
+
+ // 4. Let 'countdownHolder' be the value of F's [[CountdownHolder]] internal slot.
+ NumberObject* countdownHolder = jsCast<NumberObject*>(F->get(exec, vm.propertyNames->countdownHolderPrivateName));
+
+ // 5. Let 'result' be the result of calling the [[DefineOwnProperty]] internal method
+ // of 'values' with arguments 'index' and Property Descriptor { [[Value]]: x,
+ // [[Writable]]: true, [[Enumerable]]: true, [[Configurable]]: true }.
+ values->putDirectIndex(exec, index, x);
+
+ // 6. RejectIfAbrupt(result, deferred).
+ if (exec->hadException())
+ abruptRejection(exec, deferred);
+
+ // 7. Set countdownHolder.[[Countdown]] to countdownHolder.[[Countdown]] - 1.
+ uint32_t newCountdownValue = countdownHolder->internalValue().asUInt32() - 1;
+ countdownHolder->setInternalValue(vm, JSValue(newCountdownValue));
+
+ // 8. If countdownHolder.[[Countdown]] is 0,
+ if (!newCountdownValue) {
+ // i. Return the result of calling the [[Call]] internal method of deferred.[[Resolve]]
+ // with undefined as thisArgument and a List containing 'values' as argumentsList.
+ performDeferredResolve(exec, deferred, values);
+ }
+
+ // 9. Return.
+ return JSValue::encode(jsUndefined());
+}
+
+JSFunction* createPromiseAllCountdownFunction(VM& vm, JSGlobalObject* globalObject)
+{
+ return JSFunction::create(vm, globalObject, 1, ASCIILiteral("PromiseAllCountdownFunction"), promiseAllCountdownFunction);
+}
+
+// Promise Resolution Handler Functions
+
+static EncodedJSValue JSC_HOST_CALL promiseResolutionHandlerFunction(ExecState* exec)
+{
+ JSValue x = exec->argument(0);
+ VM& vm = exec->vm();
+ JSObject* F = exec->callee();
+
+ // 1. Let 'promise' be the value of F's [[Promise]] internal slot
+ JSPromise* promise = jsCast<JSPromise*>(F->get(exec, vm.propertyNames->promisePrivateName));
+
+ // 2. Let 'fulfillmentHandler' be the value of F's [[FulfillmentHandler]] internal slot.
+ JSValue fulfillmentHandler = F->get(exec, vm.propertyNames->fulfillmentHandlerPrivateName);
+
+ // 3. Let 'rejectionHandler' be the value of F's [[RejectionHandler]] internal slot.
+ JSValue rejectionHandler = F->get(exec, vm.propertyNames->rejectionHandlerPrivateName);
+
+ // 4. If SameValue(x, promise) is true,
+ if (sameValue(exec, x, promise)) {
+ // i. Let 'selfResolutionError' be a newly-created TypeError object.
+ JSObject* selfResolutionError = createTypeError(exec, ASCIILiteral("Resolve a promise with itself"));
+ // ii. Return the result of calling the [[Call]] internal method of rejectionHandler with
+ // undefined as thisArgument and a List containing selfResolutionError as argumentsList.
+ CallData rejectCallData;
+ CallType rejectCallType = getCallData(rejectionHandler, rejectCallData);
+ ASSERT(rejectCallType != CallTypeNone);
+
+ MarkedArgumentBuffer rejectArguments;
+ rejectArguments.append(selfResolutionError);
+
+ return JSValue::encode(call(exec, rejectionHandler, rejectCallType, rejectCallData, jsUndefined(), rejectArguments));
+ }
+
+ // 5. Let 'C' be the value of promise's [[PromiseConstructor]] internal slot.
+ JSValue C = promise->constructor();
+
+ // 6. Let 'deferred' be the result of calling GetDeferred(C)
+ JSValue deferredValue = createJSPromiseDeferredFromConstructor(exec, C);
+
+ // 7. ReturnIfAbrupt(deferred).
+ if (exec->hadException())
+ return JSValue::encode(jsUndefined());
+
+ JSPromiseDeferred* deferred = jsCast<JSPromiseDeferred*>(deferredValue);
+
+ // 8. Let 'updateResult' be the result of calling UpdateDeferredFromPotentialThenable(x, deferred).
+ ThenableStatus updateResult = updateDeferredFromPotentialThenable(exec, x, deferred);
+
+ // 9. ReturnIfAbrupt(updateResult).
+ if (exec->hadException())
+ return JSValue::encode(jsUndefined());
+
+ // 10. If 'updateResult' is not "not a thenable", return the result of calling
+ // Invoke(deferred.[[Promise]], "then", (fulfillmentHandler, rejectionHandler)).
+ // NOTE: Invoke does not seem to be defined anywhere, so I am guessing here.
+ if (updateResult != NotAThenable) {
+ JSObject* deferredPromise = deferred->promise();
+
+ JSValue thenValue = deferredPromise->get(exec, exec->vm().propertyNames->then);
+ if (exec->hadException())
+ return JSValue::encode(jsUndefined());
+
+ CallData thenCallData;
+ CallType thenCallType = getCallData(thenValue, thenCallData);
+ if (thenCallType == CallTypeNone)
+ return JSValue::encode(throwTypeError(exec));
+
+ MarkedArgumentBuffer arguments;
+ arguments.append(fulfillmentHandler);
+ arguments.append(rejectionHandler);
+
+ return JSValue::encode(call(exec, thenValue, thenCallType, thenCallData, deferredPromise, arguments));
+ }
+
+ // 11. Return the result of calling the [[Call]] internal method of fulfillmentHandler
+ // with undefined as thisArgument and a List containing x as argumentsList.
+ CallData fulfillmentHandlerCallData;
+ CallType fulfillmentHandlerCallType = getCallData(fulfillmentHandler, fulfillmentHandlerCallData);
+ ASSERT(fulfillmentHandlerCallType != CallTypeNone);
+
+ MarkedArgumentBuffer fulfillmentHandlerArguments;
+ fulfillmentHandlerArguments.append(x);
+
+ return JSValue::encode(call(exec, fulfillmentHandler, fulfillmentHandlerCallType, fulfillmentHandlerCallData, jsUndefined(), fulfillmentHandlerArguments));
+}
+
+JSFunction* createPromiseResolutionHandlerFunction(VM& vm, JSGlobalObject* globalObject)
+{
+ return JSFunction::create(vm, globalObject, 1, ASCIILiteral("PromiseResolutionHandlerFunction"), promiseResolutionHandlerFunction);
+}
+
+// Reject Promise Functions
+
+static EncodedJSValue JSC_HOST_CALL rejectPromiseFunction(ExecState* exec)
+{
+ JSValue reason = exec->argument(0);
+ JSObject* F = exec->callee();
+ VM& vm = exec->vm();
+
+ // 1. Let 'promise' be the value of F's [[Promise]] internal slot.
+ JSPromise* promise = jsCast<JSPromise*>(F->get(exec, exec->vm().propertyNames->promisePrivateName));
+
+ // 2. Return the result of calling PromiseReject(promise, reason);
+ promise->reject(vm, reason);
+
+ return JSValue::encode(jsUndefined());
+}
+
+JSFunction* createRejectPromiseFunction(VM& vm, JSGlobalObject* globalObject)
+{
+ return JSFunction::create(vm, globalObject, 1, ASCIILiteral("RejectPromiseFunction"), rejectPromiseFunction);
+}
+
+// Resolve Promise Functions
+
+static EncodedJSValue JSC_HOST_CALL resolvePromiseFunction(ExecState* exec)
+{
+ JSValue resolution = exec->argument(0);
+ JSObject* F = exec->callee();
+ VM& vm = exec->vm();
+
+ // 1. Let 'promise' be the value of F's [[Promise]] internal slot.
+ JSPromise* promise = jsCast<JSPromise*>(F->get(exec, vm.propertyNames->promisePrivateName));
+
+ // 2. Return the result of calling PromiseResolve(promise, resolution);
+ promise->resolve(vm, resolution);
+
+ return JSValue::encode(jsUndefined());
+}
+
+JSFunction* createResolvePromiseFunction(VM& vm, JSGlobalObject* globalObject)
+{
+ return JSFunction::create(vm, globalObject, 1, ASCIILiteral("ResolvePromiseFunction"), resolvePromiseFunction);
+}
+
+// Thrower Functions
+
+static EncodedJSValue JSC_HOST_CALL throwerFunction(ExecState* exec)
+{
+ return JSValue::encode(exec->vm().throwException(exec, exec->argument(0)));
+}
+
+JSFunction* createThrowerFunction(VM& vm, JSGlobalObject* globalObject)
+{
+ return JSFunction::create(vm, globalObject, 1, ASCIILiteral("ThrowerFunction"), throwerFunction);
+}
+
+
+} // namespace JSC
+
+#endif // ENABLE(PROMISES)
projects / apple / javascriptcore.git / blobdiff