1  /*
 2   * Copyright (C) 2015-2017 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 "JSInternalPromise.h"
28  
29  #include "BuiltinNames.h"
30  #include "JSCInlines.h"
31  
32  namespace JSC {
33  
34  const ClassInfo JSInternalPromise::s_info = { "InternalPromise", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSInternalPromise) };
35  
36  JSInternalPromise* JSInternalPromise::create(VM& vm, Structure* structure)
37  {
38      JSInternalPromise* promise = new (NotNull, allocateCell<JSInternalPromise>(vm.heap)) JSInternalPromise(vm, structure);
39      promise->finishCreation(vm);
40      return promise;
41  }
42  
43  JSInternalPromise* JSInternalPromise::createWithInitialValues(VM& vm, Structure* structure)
44  {
45      return create(vm, structure);
46  }
47  
48  Structure* JSInternalPromise::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
49  {
50      return Structure::create(vm, globalObject, prototype, TypeInfo(JSPromiseType, StructureFlags), info());
51  }
52  
53  JSInternalPromise::JSInternalPromise(VM& vm, Structure* structure)
54      : Base(vm, structure)
55  {
56  }
57  
58  JSInternalPromise* JSInternalPromise::then(JSGlobalObject* globalObject, JSFunction* onFulfilled, JSFunction* onRejected)
59  {
60      VM& vm = globalObject->vm();
61      auto scope = DECLARE_THROW_SCOPE(vm);
62  
63      JSObject* function = jsCast<JSObject*>(get(globalObject, vm.propertyNames->builtinNames().thenPublicName()));
64      RETURN_IF_EXCEPTION(scope, nullptr);
65      auto callData = JSC::getCallData(vm, function);
66      ASSERT(callData.type != CallData::Type::None);
67  
68      MarkedArgumentBuffer arguments;
69      arguments.append(onFulfilled ? onFulfilled : jsUndefined());
70      arguments.append(onRejected ? onRejected : jsUndefined());
71      ASSERT(!arguments.hasOverflowed());
72  
73      RELEASE_AND_RETURN(scope, jsCast<JSInternalPromise*>(call(globalObject, function, callData, this, arguments)));
74  }
75  
76  } // namespace JSC