8996ae31fe171afd7f08dcb7be67fbbc24db5e60
[WebKit-https.git] / Source / JavaScriptCore / API / JSCallbackObjectFunctions.h
1 /*
2  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
3  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
25  */
26
27 #include "APIShims.h"
28 #include "APICast.h"
29 #include "Error.h"
30 #include "ExceptionHelpers.h"
31 #include "JSCallbackFunction.h"
32 #include "JSClassRef.h"
33 #include "JSFunction.h"
34 #include "JSGlobalObject.h"
35 #include "JSLock.h"
36 #include "JSObjectRef.h"
37 #include "JSString.h"
38 #include "JSStringRef.h"
39 #include "OpaqueJSString.h"
40 #include "PropertyNameArray.h"
41 #include <wtf/Vector.h>
42
43 namespace JSC {
44
45 template <class Parent>
46 inline JSCallbackObject<Parent>* JSCallbackObject<Parent>::asCallbackObject(JSValue value)
47 {
48     ASSERT(asObject(value)->inherits(&s_info));
49     return jsCast<JSCallbackObject*>(asObject(value));
50 }
51
52 template <class Parent>
53 JSCallbackObject<Parent>::JSCallbackObject(ExecState* exec, Structure* structure, JSClassRef jsClass, void* data)
54     : Parent(exec->vm(), structure)
55     , m_callbackObjectData(adoptPtr(new JSCallbackObjectData(data, jsClass)))
56 {
57 }
58
59 // Global object constructor.
60 // FIXME: Move this into a separate JSGlobalCallbackObject class derived from this one.
61 template <class Parent>
62 JSCallbackObject<Parent>::JSCallbackObject(VM& vm, JSClassRef jsClass, Structure* structure)
63     : Parent(vm, structure)
64     , m_callbackObjectData(adoptPtr(new JSCallbackObjectData(0, jsClass)))
65 {
66 }
67
68 template <class Parent>
69 void JSCallbackObject<Parent>::finishCreation(ExecState* exec)
70 {
71     Base::finishCreation(exec->vm());
72     ASSERT(Parent::inherits(&s_info));
73     init(exec);
74 }
75
76 // This is just for Global object, so we can assume that Base::finishCreation is JSGlobalObject::finishCreation.
77 template <class Parent>
78 void JSCallbackObject<Parent>::finishCreation(VM& vm)
79 {
80     ASSERT(Parent::inherits(&s_info));
81     ASSERT(Parent::isGlobalObject());
82     Base::finishCreation(vm);
83     init(jsCast<JSGlobalObject*>(this)->globalExec());
84 }
85
86 template <class Parent>
87 void JSCallbackObject<Parent>::init(ExecState* exec)
88 {
89     ASSERT(exec);
90     
91     Vector<JSObjectInitializeCallback, 16> initRoutines;
92     JSClassRef jsClass = classRef();
93     do {
94         if (JSObjectInitializeCallback initialize = jsClass->initialize)
95             initRoutines.append(initialize);
96     } while ((jsClass = jsClass->parentClass));
97     
98     // initialize from base to derived
99     for (int i = static_cast<int>(initRoutines.size()) - 1; i >= 0; i--) {
100         APICallbackShim callbackShim(exec);
101         JSObjectInitializeCallback initialize = initRoutines[i];
102         initialize(toRef(exec), toRef(this));
103     }
104
105     for (JSClassRef jsClassPtr = classRef(); jsClassPtr; jsClassPtr = jsClassPtr->parentClass) {
106         if (jsClassPtr->finalize) {
107             WeakSet::allocate(this, m_callbackObjectData.get(), classRef());
108             break;
109         }
110     }
111 }
112
113 template <class Parent>
114 String JSCallbackObject<Parent>::className(const JSObject* object)
115 {
116     const JSCallbackObject* thisObject = jsCast<const JSCallbackObject*>(object);
117     String thisClassName = thisObject->classRef()->className();
118     if (!thisClassName.isEmpty())
119         return thisClassName;
120     
121     return Parent::className(object);
122 }
123
124 template <class Parent>
125 bool JSCallbackObject<Parent>::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
126 {
127     JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(object);
128     JSContextRef ctx = toRef(exec);
129     JSObjectRef thisRef = toRef(thisObject);
130     RefPtr<OpaqueJSString> propertyNameRef;
131     
132     if (StringImpl* name = propertyName.publicName()) {
133         for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) {
134             // optional optimization to bypass getProperty in cases when we only need to know if the property exists
135             if (JSObjectHasPropertyCallback hasProperty = jsClass->hasProperty) {
136                 if (!propertyNameRef)
137                     propertyNameRef = OpaqueJSString::create(name);
138                 APICallbackShim callbackShim(exec);
139                 if (hasProperty(ctx, thisRef, propertyNameRef.get())) {
140                     slot.setCustom(thisObject, callbackGetter);
141                     return true;
142                 }
143             } else if (JSObjectGetPropertyCallback getProperty = jsClass->getProperty) {
144                 if (!propertyNameRef)
145                     propertyNameRef = OpaqueJSString::create(name);
146                 JSValueRef exception = 0;
147                 JSValueRef value;
148                 {
149                     APICallbackShim callbackShim(exec);
150                     value = getProperty(ctx, thisRef, propertyNameRef.get(), &exception);
151                 }
152                 if (exception) {
153                     throwError(exec, toJS(exec, exception));
154                     slot.setValue(jsUndefined());
155                     return true;
156                 }
157                 if (value) {
158                     slot.setValue(toJS(exec, value));
159                     return true;
160                 }
161             }
162             
163             if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) {
164                 if (staticValues->contains(name)) {
165                     JSValue value = thisObject->getStaticValue(exec, propertyName);
166                     if (value) {
167                         slot.setValue(value);
168                         return true;
169                     }
170                 }
171             }
172             
173             if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) {
174                 if (staticFunctions->contains(name)) {
175                     slot.setCustom(thisObject, staticFunctionGetter);
176                     return true;
177                 }
178             }
179         }
180     }
181
182     return Parent::getOwnPropertySlot(thisObject, exec, propertyName, slot);
183 }
184
185 template <class Parent>
186 bool JSCallbackObject<Parent>::getOwnPropertySlotByIndex(JSObject* object, ExecState* exec, unsigned propertyName, PropertySlot& slot)
187 {
188     return object->methodTable()->getOwnPropertySlot(object, exec, Identifier::from(exec, propertyName), slot);
189 }
190
191 template <class Parent>
192 JSValue JSCallbackObject<Parent>::defaultValue(const JSObject* object, ExecState* exec, PreferredPrimitiveType hint)
193 {
194     const JSCallbackObject* thisObject = jsCast<const JSCallbackObject*>(object);
195     JSContextRef ctx = toRef(exec);
196     JSObjectRef thisRef = toRef(thisObject);
197     ::JSType jsHint = hint == PreferString ? kJSTypeString : kJSTypeNumber;
198
199     for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) {
200         if (JSObjectConvertToTypeCallback convertToType = jsClass->convertToType) {
201             JSValueRef exception = 0;
202             JSValueRef result = convertToType(ctx, thisRef, jsHint, &exception);
203             if (exception) {
204                 throwError(exec, toJS(exec, exception));
205                 return jsUndefined();
206             }
207             if (result)
208                 return toJS(exec, result);
209         }
210     }
211     
212     return Parent::defaultValue(object, exec, hint);
213 }
214
215 template <class Parent>
216 bool JSCallbackObject<Parent>::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor)
217 {
218     JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(object);
219     PropertySlot slot(thisObject);
220     if (thisObject->methodTable()->getOwnPropertySlot(thisObject, exec, propertyName, slot)) {
221         // Ideally we should return an access descriptor, but returning a value descriptor is better than nothing.
222         JSValue value = slot.getValue(exec, propertyName);
223         if (!exec->hadException())
224             descriptor.setValue(value);
225         // We don't know whether the property is configurable, but assume it is.
226         descriptor.setConfigurable(true);
227         // We don't know whether the property is enumerable (we could call getOwnPropertyNames() to find out), but assume it isn't.
228         descriptor.setEnumerable(false);
229         return true;
230     }
231
232     return Parent::getOwnPropertyDescriptor(thisObject, exec, propertyName, descriptor);
233 }
234
235 template <class Parent>
236 void JSCallbackObject<Parent>::put(JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
237 {
238     JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell);
239     JSContextRef ctx = toRef(exec);
240     JSObjectRef thisRef = toRef(thisObject);
241     RefPtr<OpaqueJSString> propertyNameRef;
242     JSValueRef valueRef = toRef(exec, value);
243     
244     if (StringImpl* name = propertyName.publicName()) {
245         for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) {
246             if (JSObjectSetPropertyCallback setProperty = jsClass->setProperty) {
247                 if (!propertyNameRef)
248                     propertyNameRef = OpaqueJSString::create(name);
249                 JSValueRef exception = 0;
250                 bool result;
251                 {
252                     APICallbackShim callbackShim(exec);
253                     result = setProperty(ctx, thisRef, propertyNameRef.get(), valueRef, &exception);
254                 }
255                 if (exception)
256                     throwError(exec, toJS(exec, exception));
257                 if (result || exception)
258                     return;
259             }
260             
261             if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) {
262                 if (StaticValueEntry* entry = staticValues->get(name)) {
263                     if (entry->attributes & kJSPropertyAttributeReadOnly)
264                         return;
265                     if (JSObjectSetPropertyCallback setProperty = entry->setProperty) {
266                         if (!propertyNameRef)
267                             propertyNameRef = OpaqueJSString::create(name);
268                         JSValueRef exception = 0;
269                         bool result;
270                         {
271                             APICallbackShim callbackShim(exec);
272                             result = setProperty(ctx, thisRef, propertyNameRef.get(), valueRef, &exception);
273                         }
274                         if (exception)
275                             throwError(exec, toJS(exec, exception));
276                         if (result || exception)
277                             return;
278                     }
279                 }
280             }
281             
282             if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) {
283                 if (StaticFunctionEntry* entry = staticFunctions->get(name)) {
284                     if (entry->attributes & kJSPropertyAttributeReadOnly)
285                         return;
286                     thisObject->JSCallbackObject<Parent>::putDirect(exec->vm(), propertyName, value); // put as override property
287                     return;
288                 }
289             }
290         }
291     }
292
293     return Parent::put(thisObject, exec, propertyName, value, slot);
294 }
295
296 template <class Parent>
297 void JSCallbackObject<Parent>::putByIndex(JSCell* cell, ExecState* exec, unsigned propertyIndex, JSValue value, bool shouldThrow)
298 {
299     JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell);
300     JSContextRef ctx = toRef(exec);
301     JSObjectRef thisRef = toRef(thisObject);
302     RefPtr<OpaqueJSString> propertyNameRef;
303     JSValueRef valueRef = toRef(exec, value);
304     Identifier propertyName = Identifier(exec, String::number(propertyIndex));
305
306     for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) {
307         if (JSObjectSetPropertyCallback setProperty = jsClass->setProperty) {
308             if (!propertyNameRef)
309                 propertyNameRef = OpaqueJSString::create(propertyName.impl());
310             JSValueRef exception = 0;
311             bool result;
312             {
313                 APICallbackShim callbackShim(exec);
314                 result = setProperty(ctx, thisRef, propertyNameRef.get(), valueRef, &exception);
315             }
316             if (exception)
317                 throwError(exec, toJS(exec, exception));
318             if (result || exception)
319                 return;
320         }
321
322         if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) {
323             if (StaticValueEntry* entry = staticValues->get(propertyName.impl())) {
324                 if (entry->attributes & kJSPropertyAttributeReadOnly)
325                     return;
326                 if (JSObjectSetPropertyCallback setProperty = entry->setProperty) {
327                     if (!propertyNameRef)
328                         propertyNameRef = OpaqueJSString::create(propertyName.impl());
329                     JSValueRef exception = 0;
330                     bool result;
331                     {
332                         APICallbackShim callbackShim(exec);
333                         result = setProperty(ctx, thisRef, propertyNameRef.get(), valueRef, &exception);
334                     }
335                     if (exception)
336                         throwError(exec, toJS(exec, exception));
337                     if (result || exception)
338                         return;
339                 }
340             }
341         }
342
343         if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) {
344             if (StaticFunctionEntry* entry = staticFunctions->get(propertyName.impl())) {
345                 if (entry->attributes & kJSPropertyAttributeReadOnly)
346                     return;
347                 break;
348             }
349         }
350     }
351
352     return Parent::putByIndex(thisObject, exec, propertyIndex, value, shouldThrow);
353 }
354
355 template <class Parent>
356 bool JSCallbackObject<Parent>::deleteProperty(JSCell* cell, ExecState* exec, PropertyName propertyName)
357 {
358     JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell);
359     JSContextRef ctx = toRef(exec);
360     JSObjectRef thisRef = toRef(thisObject);
361     RefPtr<OpaqueJSString> propertyNameRef;
362     
363     if (StringImpl* name = propertyName.publicName()) {
364         for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) {
365             if (JSObjectDeletePropertyCallback deleteProperty = jsClass->deleteProperty) {
366                 if (!propertyNameRef)
367                     propertyNameRef = OpaqueJSString::create(name);
368                 JSValueRef exception = 0;
369                 bool result;
370                 {
371                     APICallbackShim callbackShim(exec);
372                     result = deleteProperty(ctx, thisRef, propertyNameRef.get(), &exception);
373                 }
374                 if (exception)
375                     throwError(exec, toJS(exec, exception));
376                 if (result || exception)
377                     return true;
378             }
379             
380             if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) {
381                 if (StaticValueEntry* entry = staticValues->get(name)) {
382                     if (entry->attributes & kJSPropertyAttributeDontDelete)
383                         return false;
384                     return true;
385                 }
386             }
387             
388             if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) {
389                 if (StaticFunctionEntry* entry = staticFunctions->get(name)) {
390                     if (entry->attributes & kJSPropertyAttributeDontDelete)
391                         return false;
392                     return true;
393                 }
394             }
395         }
396     }
397
398     return Parent::deleteProperty(thisObject, exec, propertyName);
399 }
400
401 template <class Parent>
402 bool JSCallbackObject<Parent>::deletePropertyByIndex(JSCell* cell, ExecState* exec, unsigned propertyName)
403 {
404     JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell);
405     return thisObject->methodTable()->deleteProperty(thisObject, exec, Identifier::from(exec, propertyName));
406 }
407
408 template <class Parent>
409 ConstructType JSCallbackObject<Parent>::getConstructData(JSCell* cell, ConstructData& constructData)
410 {
411     JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell);
412     for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) {
413         if (jsClass->callAsConstructor) {
414             constructData.native.function = construct;
415             return ConstructTypeHost;
416         }
417     }
418     return ConstructTypeNone;
419 }
420
421 template <class Parent>
422 EncodedJSValue JSCallbackObject<Parent>::construct(ExecState* exec)
423 {
424     JSObject* constructor = exec->callee();
425     JSContextRef execRef = toRef(exec);
426     JSObjectRef constructorRef = toRef(constructor);
427     
428     for (JSClassRef jsClass = jsCast<JSCallbackObject<Parent>*>(constructor)->classRef(); jsClass; jsClass = jsClass->parentClass) {
429         if (JSObjectCallAsConstructorCallback callAsConstructor = jsClass->callAsConstructor) {
430             size_t argumentCount = exec->argumentCount();
431             Vector<JSValueRef, 16> arguments;
432             arguments.reserveInitialCapacity(argumentCount);
433             for (size_t i = 0; i < argumentCount; ++i)
434                 arguments.uncheckedAppend(toRef(exec, exec->argument(i)));
435             JSValueRef exception = 0;
436             JSObject* result;
437             {
438                 APICallbackShim callbackShim(exec);
439                 result = toJS(callAsConstructor(execRef, constructorRef, argumentCount, arguments.data(), &exception));
440             }
441             if (exception)
442                 throwError(exec, toJS(exec, exception));
443             return JSValue::encode(result);
444         }
445     }
446     
447     RELEASE_ASSERT_NOT_REACHED(); // getConstructData should prevent us from reaching here
448     return JSValue::encode(JSValue());
449 }
450
451 template <class Parent>
452 bool JSCallbackObject<Parent>::customHasInstance(JSObject* object, ExecState* exec, JSValue value)
453 {
454     JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(object);
455     JSContextRef execRef = toRef(exec);
456     JSObjectRef thisRef = toRef(thisObject);
457     
458     for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) {
459         if (JSObjectHasInstanceCallback hasInstance = jsClass->hasInstance) {
460             JSValueRef valueRef = toRef(exec, value);
461             JSValueRef exception = 0;
462             bool result;
463             {
464                 APICallbackShim callbackShim(exec);
465                 result = hasInstance(execRef, thisRef, valueRef, &exception);
466             }
467             if (exception)
468                 throwError(exec, toJS(exec, exception));
469             return result;
470         }
471     }
472     return false;
473 }
474
475 template <class Parent>
476 CallType JSCallbackObject<Parent>::getCallData(JSCell* cell, CallData& callData)
477 {
478     JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell);
479     for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) {
480         if (jsClass->callAsFunction) {
481             callData.native.function = call;
482             return CallTypeHost;
483         }
484     }
485     return CallTypeNone;
486 }
487
488 template <class Parent>
489 EncodedJSValue JSCallbackObject<Parent>::call(ExecState* exec)
490 {
491     JSContextRef execRef = toRef(exec);
492     JSObjectRef functionRef = toRef(exec->callee());
493     JSObjectRef thisObjRef = toRef(jsCast<JSObject*>(exec->hostThisValue().toThis(exec, NotStrictMode)));
494     
495     for (JSClassRef jsClass = jsCast<JSCallbackObject<Parent>*>(toJS(functionRef))->classRef(); jsClass; jsClass = jsClass->parentClass) {
496         if (JSObjectCallAsFunctionCallback callAsFunction = jsClass->callAsFunction) {
497             size_t argumentCount = exec->argumentCount();
498             Vector<JSValueRef, 16> arguments;
499             arguments.reserveInitialCapacity(argumentCount);
500             for (size_t i = 0; i < argumentCount; ++i)
501                 arguments.uncheckedAppend(toRef(exec, exec->argument(i)));
502             JSValueRef exception = 0;
503             JSValue result;
504             {
505                 APICallbackShim callbackShim(exec);
506                 result = toJS(exec, callAsFunction(execRef, functionRef, thisObjRef, argumentCount, arguments.data(), &exception));
507             }
508             if (exception)
509                 throwError(exec, toJS(exec, exception));
510             return JSValue::encode(result);
511         }
512     }
513     
514     RELEASE_ASSERT_NOT_REACHED(); // getCallData should prevent us from reaching here
515     return JSValue::encode(JSValue());
516 }
517
518 template <class Parent>
519 void JSCallbackObject<Parent>::getOwnNonIndexPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
520 {
521     JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(object);
522     JSContextRef execRef = toRef(exec);
523     JSObjectRef thisRef = toRef(thisObject);
524     
525     for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) {
526         if (JSObjectGetPropertyNamesCallback getPropertyNames = jsClass->getPropertyNames) {
527             APICallbackShim callbackShim(exec);
528             getPropertyNames(execRef, thisRef, toRef(&propertyNames));
529         }
530         
531         if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) {
532             typedef OpaqueJSClassStaticValuesTable::const_iterator iterator;
533             iterator end = staticValues->end();
534             for (iterator it = staticValues->begin(); it != end; ++it) {
535                 StringImpl* name = it->key.get();
536                 StaticValueEntry* entry = it->value.get();
537                 if (entry->getProperty && (!(entry->attributes & kJSPropertyAttributeDontEnum) || (mode == IncludeDontEnumProperties)))
538                     propertyNames.add(Identifier(exec, name));
539             }
540         }
541         
542         if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) {
543             typedef OpaqueJSClassStaticFunctionsTable::const_iterator iterator;
544             iterator end = staticFunctions->end();
545             for (iterator it = staticFunctions->begin(); it != end; ++it) {
546                 StringImpl* name = it->key.get();
547                 StaticFunctionEntry* entry = it->value.get();
548                 if (!(entry->attributes & kJSPropertyAttributeDontEnum) || (mode == IncludeDontEnumProperties))
549                     propertyNames.add(Identifier(exec, name));
550             }
551         }
552     }
553     
554     Parent::getOwnNonIndexPropertyNames(thisObject, exec, propertyNames, mode);
555 }
556
557 template <class Parent>
558 void JSCallbackObject<Parent>::setPrivate(void* data)
559 {
560     m_callbackObjectData->privateData = data;
561 }
562
563 template <class Parent>
564 void* JSCallbackObject<Parent>::getPrivate()
565 {
566     return m_callbackObjectData->privateData;
567 }
568
569 template <class Parent>
570 bool JSCallbackObject<Parent>::inherits(JSClassRef c) const
571 {
572     for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) {
573         if (jsClass == c)
574             return true;
575     }
576     return false;
577 }
578
579 template <class Parent>
580 JSValue JSCallbackObject<Parent>::getStaticValue(ExecState* exec, PropertyName propertyName)
581 {
582     JSObjectRef thisRef = toRef(this);
583     RefPtr<OpaqueJSString> propertyNameRef;
584     
585     if (StringImpl* name = propertyName.publicName()) {
586         for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) {
587             if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) {
588                 if (StaticValueEntry* entry = staticValues->get(name)) {
589                     if (JSObjectGetPropertyCallback getProperty = entry->getProperty) {
590                         if (!propertyNameRef)
591                             propertyNameRef = OpaqueJSString::create(name);
592                         JSValueRef exception = 0;
593                         JSValueRef value;
594                         {
595                             APICallbackShim callbackShim(exec);
596                             value = getProperty(toRef(exec), thisRef, propertyNameRef.get(), &exception);
597                         }
598                         if (exception) {
599                             throwError(exec, toJS(exec, exception));
600                             return jsUndefined();
601                         }
602                         if (value)
603                             return toJS(exec, value);
604                     }
605                 }
606             }
607         }
608     }
609
610     return JSValue();
611 }
612
613 template <class Parent>
614 JSValue JSCallbackObject<Parent>::staticFunctionGetter(ExecState* exec, JSValue slotParent, PropertyName propertyName)
615 {
616     JSCallbackObject* thisObj = asCallbackObject(slotParent);
617     
618     // Check for cached or override property.
619     PropertySlot slot2(thisObj);
620     if (Parent::getOwnPropertySlot(thisObj, exec, propertyName, slot2))
621         return slot2.getValue(exec, propertyName);
622     
623     if (StringImpl* name = propertyName.publicName()) {
624         for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass) {
625             if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) {
626                 if (StaticFunctionEntry* entry = staticFunctions->get(name)) {
627                     if (JSObjectCallAsFunctionCallback callAsFunction = entry->callAsFunction) {
628                         
629                         JSObject* o = JSCallbackFunction::create(exec, thisObj->globalObject(), callAsFunction, name);
630                         thisObj->putDirect(exec->vm(), propertyName, o, entry->attributes);
631                         return o;
632                     }
633                 }
634             }
635         }
636     }
637
638     return throwError(exec, createReferenceError(exec, ASCIILiteral("Static function property defined with NULL callAsFunction callback.")));
639 }
640
641 template <class Parent>
642 JSValue JSCallbackObject<Parent>::callbackGetter(ExecState* exec, JSValue slotParent, PropertyName propertyName)
643 {
644     JSCallbackObject* thisObj = asCallbackObject(slotParent);
645     
646     JSObjectRef thisRef = toRef(thisObj);
647     RefPtr<OpaqueJSString> propertyNameRef;
648     
649     if (StringImpl* name = propertyName.publicName()) {
650         for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass) {
651             if (JSObjectGetPropertyCallback getProperty = jsClass->getProperty) {
652                 if (!propertyNameRef)
653                     propertyNameRef = OpaqueJSString::create(name);
654                 JSValueRef exception = 0;
655                 JSValueRef value;
656                 {
657                     APICallbackShim callbackShim(exec);
658                     value = getProperty(toRef(exec), thisRef, propertyNameRef.get(), &exception);
659                 }
660                 if (exception) {
661                     throwError(exec, toJS(exec, exception));
662                     return jsUndefined();
663                 }
664                 if (value)
665                     return toJS(exec, value);
666             }
667         }
668     }
669
670     return throwError(exec, createReferenceError(exec, ASCIILiteral("hasProperty callback returned true for a property that doesn't exist.")));
671 }
672
673 } // namespace JSC