runtime/JSPromiseDeferred.cpp

   1 /*
   2  * Copyright (C) 2013 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  23  * THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "JSPromiseDeferred.h"
  28
  29 #if ENABLE(PROMISES)
  30
  31 #include "BuiltinNames.h"
  32 #include "Error.h"
  33 #include "Exception.h"
  34 #include "JSCJSValueInlines.h"
  35 #include "JSCellInlines.h"
  36 #include "JSPromise.h"
  37 #include "JSPromiseConstructor.h"
  38 #include "SlotVisitorInlines.h"
  39 #include "StructureInlines.h"
  40
  41 namespace JSC {
  42
  43 const ClassInfo JSPromiseDeferred::s_info = { "JSPromiseDeferred", 0, 0, CREATE_METHOD_TABLE(JSPromiseDeferred) };
  44
  45 JSPromiseDeferred* JSPromiseDeferred::create(ExecState* exec, JSGlobalObject* globalObject)
  46 {
  47     VM& vm = exec->vm();
  48
  49     JSFunction* newPromiseDeferredFunction = globalObject->newPromiseDeferredFunction();
  50     CallData callData;
  51     CallType callType = JSC::getCallData(newPromiseDeferredFunction, callData);
  52     ASSERT(callType != CallTypeNone);
  53
  54     MarkedArgumentBuffer arguments;
  55     JSValue deferred = call(exec, newPromiseDeferredFunction, callType, callData, jsUndefined(), arguments);
  56
  57     JSValue promise = deferred.get(exec, vm.propertyNames->promisePrivateName);
  58     ASSERT(promise.inherits(JSPromise::info()));
  59     JSValue resolve = deferred.get(exec, vm.propertyNames->builtinNames().resolvePrivateName());
  60     JSValue reject = deferred.get(exec, vm.propertyNames->builtinNames().rejectPrivateName());
  61
  62     return JSPromiseDeferred::create(vm, jsCast<JSPromise*>(promise), resolve, reject);
  63 }
  64
  65 JSPromiseDeferred* JSPromiseDeferred::create(VM& vm, JSObject* promise, JSValue resolve, JSValue reject)
  66 {
  67     JSPromiseDeferred* deferred = new (NotNull, allocateCell<JSPromiseDeferred>(vm.heap)) JSPromiseDeferred(vm);
  68     deferred->finishCreation(vm, promise, resolve, reject);
  69     return deferred;
  70 }
  71
  72 JSPromiseDeferred::JSPromiseDeferred(VM& vm)
  73     : Base(vm, vm.promiseDeferredStructure.get())
  74 {
  75 }
  76
  77 void JSPromiseDeferred::finishCreation(VM& vm, JSObject* promise, JSValue resolve, JSValue reject)
  78 {
  79     Base::finishCreation(vm);
  80     m_promise.set(vm, this, promise);
  81     m_resolve.set(vm, this, resolve);
  82     m_reject.set(vm, this, reject);
  83 }
  84
  85 void JSPromiseDeferred::visitChildren(JSCell* cell, SlotVisitor& visitor)
  86 {
  87     JSPromiseDeferred* thisObject = jsCast<JSPromiseDeferred*>(cell);
  88     ASSERT_GC_OBJECT_INHERITS(thisObject, info());
  89
  90     Base::visitChildren(thisObject, visitor);
  91
  92     visitor.append(&thisObject->m_promise);
  93     visitor.append(&thisObject->m_resolve);
  94     visitor.append(&thisObject->m_reject);
  95 }
  96
  97 } // namespace JSC
  98
  99 #endif // ENABLE(PROMISES)