Line data Source code
1 : /* THIS FILE IS AUTOGENERATED FROM PopStateEvent.webidl BY Codegen.py - DO NOT EDIT */
2 :
3 : #include "AtomList.h"
4 : #include "EventBinding.h"
5 : #include "PopStateEventBinding.h"
6 : #include "WrapperFactory.h"
7 : #include "mozilla/OwningNonNull.h"
8 : #include "mozilla/dom/BindingUtils.h"
9 : #include "mozilla/dom/DOMJSClass.h"
10 : #include "mozilla/dom/NonRefcountedDOMObject.h"
11 : #include "mozilla/dom/PopStateEvent.h"
12 : #include "mozilla/dom/PrimitiveConversions.h"
13 : #include "mozilla/dom/ScriptSettings.h"
14 : #include "mozilla/dom/XrayExpandoClass.h"
15 :
16 : namespace mozilla {
17 : namespace dom {
18 :
19 :
20 0 : PopStateEventInit::PopStateEventInit()
21 0 : : EventInit(FastDictionaryInitializer()),
22 0 : mState(JS::UndefinedValue())
23 : {
24 : // Safe to pass a null context if we pass a null value
25 0 : Init(nullptr, JS::NullHandleValue);
26 0 : }
27 :
28 :
29 : bool
30 0 : PopStateEventInit::InitIds(JSContext* cx, PopStateEventInitAtoms* atomsCache)
31 : {
32 0 : MOZ_ASSERT(!*reinterpret_cast<jsid**>(atomsCache));
33 :
34 : // Initialize these in reverse order so that any failure leaves the first one
35 : // uninitialized.
36 0 : if (!atomsCache->state_id.init(cx, "state")) {
37 0 : return false;
38 : }
39 0 : return true;
40 : }
41 :
42 : bool
43 0 : PopStateEventInit::Init(JSContext* cx, JS::Handle<JS::Value> val, const char* sourceDescription, bool passedToJSImpl)
44 : {
45 : // Passing a null JSContext is OK only if we're initing from null,
46 : // Since in that case we will not have to do any property gets
47 : // Also evaluate isNullOrUndefined in order to avoid false-positive
48 : // checkers by static analysis tools
49 0 : MOZ_ASSERT_IF(!cx, val.isNull() && val.isNullOrUndefined());
50 0 : PopStateEventInitAtoms* atomsCache = nullptr;
51 0 : if (cx) {
52 0 : atomsCache = GetAtomCache<PopStateEventInitAtoms>(cx);
53 0 : if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
54 0 : return false;
55 : }
56 : }
57 :
58 : // Per spec, we init the parent's members first
59 0 : if (!EventInit::Init(cx, val)) {
60 0 : return false;
61 : }
62 :
63 0 : bool isNull = val.isNullOrUndefined();
64 : // We only need these if !isNull, in which case we have |cx|.
65 0 : Maybe<JS::Rooted<JSObject *> > object;
66 0 : Maybe<JS::Rooted<JS::Value> > temp;
67 0 : if (!isNull) {
68 0 : MOZ_ASSERT(cx);
69 0 : object.emplace(cx, &val.toObject());
70 0 : temp.emplace(cx);
71 : }
72 0 : if (!isNull) {
73 0 : if (!JS_GetPropertyById(cx, *object, atomsCache->state_id, temp.ptr())) {
74 0 : return false;
75 : }
76 : }
77 0 : if (!isNull && !temp->isUndefined()) {
78 : #ifdef __clang__
79 : #pragma clang diagnostic push
80 : #pragma clang diagnostic ignored "-Wunreachable-code"
81 : #pragma clang diagnostic ignored "-Wunreachable-code-return"
82 : #endif // __clang__
83 0 : if ((passedToJSImpl) && !CallerSubsumes(temp.ref())) {
84 0 : ThrowErrorMessage(cx, MSG_PERMISSION_DENIED_TO_PASS_ARG, "'state' member of PopStateEventInit");
85 0 : return false;
86 : }
87 : #ifdef __clang__
88 : #pragma clang diagnostic pop
89 : #endif // __clang__
90 0 : mState = temp.ref();
91 : } else {
92 0 : mState = JS::NullValue();
93 : }
94 0 : mIsAnyMemberPresent = true;
95 0 : return true;
96 : }
97 :
98 : bool
99 0 : PopStateEventInit::ToObjectInternal(JSContext* cx, JS::MutableHandle<JS::Value> rval) const
100 : {
101 0 : PopStateEventInitAtoms* atomsCache = GetAtomCache<PopStateEventInitAtoms>(cx);
102 0 : if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
103 0 : return false;
104 : }
105 :
106 : // Per spec, we define the parent's members first
107 0 : if (!EventInit::ToObjectInternal(cx, rval)) {
108 0 : return false;
109 : }
110 0 : JS::Rooted<JSObject*> obj(cx, &rval.toObject());
111 :
112 : do {
113 : // block for our 'break' successCode and scope for 'temp' and 'currentValue'
114 0 : JS::Rooted<JS::Value> temp(cx);
115 0 : JS::Value const & currentValue = mState;
116 0 : JS::ExposeValueToActiveJS(currentValue);
117 0 : temp.set(currentValue);
118 0 : if (!MaybeWrapValue(cx, &temp)) {
119 0 : return false;
120 : }
121 0 : if (!JS_DefinePropertyById(cx, obj, atomsCache->state_id, temp, JSPROP_ENUMERATE)) {
122 0 : return false;
123 : }
124 0 : break;
125 : } while(0);
126 :
127 0 : return true;
128 : }
129 :
130 : void
131 0 : PopStateEventInit::TraceDictionary(JSTracer* trc)
132 : {
133 0 : EventInit::TraceDictionary(trc);
134 0 : JS::UnsafeTraceRoot(trc, &mState, "PopStateEventInit.mState");
135 0 : }
136 :
137 : namespace binding_detail {
138 : } // namespace binding_detail
139 :
140 :
141 : namespace PopStateEventBinding {
142 :
143 : static_assert(IsRefcounted<NativeType>::value == IsRefcounted<EventBinding::NativeType>::value,
144 : "Can't inherit from an interface with a different ownership model.");
145 :
146 : static bool
147 0 : get_state(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::PopStateEvent* self, JSJitGetterCallArgs args)
148 : {
149 0 : JS::Rooted<JS::Value> result(cx);
150 0 : self->GetState(cx, &result);
151 0 : MOZ_ASSERT(!JS_IsExceptionPending(cx));
152 0 : JS::ExposeValueToActiveJS(result);
153 0 : args.rval().set(result);
154 0 : if (!MaybeWrapValue(cx, args.rval())) {
155 0 : return false;
156 : }
157 0 : return true;
158 : }
159 :
160 : static const JSJitInfo state_getterinfo = {
161 : { (JSJitGetterOp)get_state },
162 : { prototypes::id::PopStateEvent },
163 : { PrototypeTraits<prototypes::id::PopStateEvent>::Depth },
164 : JSJitInfo::Getter,
165 : JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */
166 : JSVAL_TYPE_UNKNOWN, /* returnType. Not relevant for setters. */
167 : false, /* isInfallible. False in setters. */
168 : false, /* isMovable. Not relevant for setters. */
169 : false, /* isEliminatable. Not relevant for setters. */
170 : false, /* isAlwaysInSlot. Only relevant for getters. */
171 : false, /* isLazilyCachedInSlot. Only relevant for getters. */
172 : false, /* isTypedMethod. Only relevant for methods. */
173 : 0 /* Reserved slot index, if we're stored in a slot, else 0. */
174 : };
175 : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
176 : static_assert(0 < 1, "There is no slot for us");
177 :
178 : static bool
179 0 : get_isTrusted(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::PopStateEvent* self, JSJitGetterCallArgs args)
180 : {
181 0 : bool result(self->IsTrusted());
182 0 : MOZ_ASSERT(!JS_IsExceptionPending(cx));
183 0 : args.rval().setBoolean(result);
184 0 : return true;
185 : }
186 :
187 : static const JSJitInfo isTrusted_getterinfo = {
188 : { (JSJitGetterOp)get_isTrusted },
189 : { prototypes::id::PopStateEvent },
190 : { PrototypeTraits<prototypes::id::PopStateEvent>::Depth },
191 : JSJitInfo::Getter,
192 : JSJitInfo::AliasDOMSets, /* aliasSet. Not relevant for setters. */
193 : JSVAL_TYPE_BOOLEAN, /* returnType. Not relevant for setters. */
194 : true, /* isInfallible. False in setters. */
195 : true, /* isMovable. Not relevant for setters. */
196 : true, /* isEliminatable. Not relevant for setters. */
197 : false, /* isAlwaysInSlot. Only relevant for getters. */
198 : false, /* isLazilyCachedInSlot. Only relevant for getters. */
199 : false, /* isTypedMethod. Only relevant for methods. */
200 : 0 /* Reserved slot index, if we're stored in a slot, else 0. */
201 : };
202 : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
203 : static_assert(0 < 1, "There is no slot for us");
204 :
205 : static bool
206 0 : _addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)
207 : {
208 0 : mozilla::dom::PopStateEvent* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::PopStateEvent>(obj);
209 : // We don't want to preserve if we don't have a wrapper, and we
210 : // obviously can't preserve if we're not initialized.
211 0 : if (self && self->GetWrapperPreserveColor()) {
212 0 : PreserveWrapper(self);
213 : }
214 0 : return true;
215 : }
216 :
217 : static void
218 0 : _finalize(js::FreeOp* fop, JSObject* obj)
219 : {
220 0 : mozilla::dom::PopStateEvent* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::PopStateEvent>(obj);
221 0 : if (self) {
222 0 : ClearWrapper(self, self, obj);
223 0 : AddForDeferredFinalization<mozilla::dom::PopStateEvent>(self);
224 : }
225 0 : }
226 :
227 : static void
228 0 : _objectMoved(JSObject* obj, const JSObject* old)
229 : {
230 0 : mozilla::dom::PopStateEvent* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::PopStateEvent>(obj);
231 0 : if (self) {
232 0 : UpdateWrapper(self, self, obj, old);
233 : }
234 0 : }
235 :
236 : // We deliberately use brace-elision to make Visual Studio produce better initalization code.
237 : #if defined(__clang__)
238 : #pragma clang diagnostic push
239 : #pragma clang diagnostic ignored "-Wmissing-braces"
240 : #endif
241 : static const JSPropertySpec sAttributes_specs[] = {
242 : { "state", JSPROP_SHARED | JSPROP_ENUMERATE, GenericBindingGetter, &state_getterinfo, nullptr, nullptr },
243 : { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
244 : };
245 : #if defined(__clang__)
246 : #pragma clang diagnostic pop
247 : #endif
248 :
249 :
250 : // Can't be const because the pref-enabled boolean needs to be writable
251 : static Prefable<const JSPropertySpec> sAttributes[] = {
252 : { nullptr, &sAttributes_specs[0] },
253 : { nullptr, nullptr }
254 : };
255 :
256 : static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
257 : "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
258 : static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
259 : "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");
260 :
261 : // We deliberately use brace-elision to make Visual Studio produce better initalization code.
262 : #if defined(__clang__)
263 : #pragma clang diagnostic push
264 : #pragma clang diagnostic ignored "-Wmissing-braces"
265 : #endif
266 : static const JSPropertySpec sUnforgeableAttributes_specs[] = {
267 : { "isTrusted", JSPROP_SHARED | JSPROP_ENUMERATE | JSPROP_PERMANENT, GenericBindingGetter, &isTrusted_getterinfo, nullptr, nullptr },
268 : { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
269 : };
270 : #if defined(__clang__)
271 : #pragma clang diagnostic pop
272 : #endif
273 :
274 :
275 : // Can't be const because the pref-enabled boolean needs to be writable
276 : static Prefable<const JSPropertySpec> sUnforgeableAttributes[] = {
277 : { nullptr, &sUnforgeableAttributes_specs[0] },
278 : { nullptr, nullptr }
279 : };
280 :
281 : static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
282 : "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
283 : static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
284 : "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");
285 :
286 :
287 : static uint16_t sNativeProperties_sortedPropertyIndices[2];
288 : static PropertyInfo sNativeProperties_propertyInfos[2];
289 :
290 : static const NativePropertiesN<2> sNativeProperties = {
291 : false, 0,
292 : false, 0,
293 : false, 0,
294 : true, 0 /* sAttributes */,
295 : false, 0,
296 : true, 1 /* sUnforgeableAttributes */,
297 : false, 0,
298 : -1,
299 : 2,
300 : sNativeProperties_sortedPropertyIndices,
301 : {
302 : { sAttributes, &sNativeProperties_propertyInfos[0] },
303 : { sUnforgeableAttributes, &sNativeProperties_propertyInfos[1] }
304 : }
305 : };
306 : static_assert(2 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
307 : "We have a property info count that is oversized");
308 :
309 : static bool
310 0 : _constructor(JSContext* cx, unsigned argc, JS::Value* vp)
311 : {
312 0 : JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
313 0 : JS::Rooted<JSObject*> obj(cx, &args.callee());
314 0 : if (!args.isConstructing()) {
315 : // XXXbz wish I could get the name from the callee instead of
316 : // Adding more relocations
317 0 : return ThrowConstructorWithoutNew(cx, "PopStateEvent");
318 : }
319 :
320 0 : GlobalObject global(cx, obj);
321 0 : if (global.Failed()) {
322 0 : return false;
323 : }
324 :
325 0 : JS::Rooted<JSObject*> desiredProto(cx);
326 0 : if (!GetDesiredProto(cx, args, &desiredProto)) {
327 0 : return false;
328 : }
329 :
330 0 : if (MOZ_UNLIKELY(args.length() < 1)) {
331 0 : return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "PopStateEvent");
332 : }
333 0 : bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj);
334 0 : binding_detail::FakeString arg0;
335 0 : if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
336 0 : return false;
337 : }
338 0 : RootedDictionary<binding_detail::FastPopStateEventInit> arg1(cx);
339 0 : if (!arg1.Init(cx, (args.hasDefined(1)) ? args[1] : JS::NullHandleValue, "Argument 2 of PopStateEvent.constructor", false)) {
340 0 : return false;
341 : }
342 0 : Maybe<JSAutoCompartment> ac;
343 0 : if (objIsXray) {
344 0 : obj = js::CheckedUnwrap(obj);
345 0 : if (!obj) {
346 0 : return false;
347 : }
348 0 : ac.emplace(cx, obj);
349 0 : if (!JS_WrapObject(cx, &desiredProto)) {
350 0 : return false;
351 : }
352 0 : if (!JS_WrapValue(cx, JS::MutableHandle<JS::Value>::fromMarkedLocation(&arg1.mState))) {
353 0 : return false;
354 : }
355 : }
356 0 : binding_detail::FastErrorResult rv;
357 0 : auto result(StrongOrRawPtr<mozilla::dom::PopStateEvent>(mozilla::dom::PopStateEvent::Constructor(global, NonNullHelper(Constify(arg0)), Constify(arg1), rv)));
358 0 : if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
359 0 : return false;
360 : }
361 0 : MOZ_ASSERT(!JS_IsExceptionPending(cx));
362 : static_assert(!IsPointer<decltype(result)>::value,
363 : "NewObject implies that we need to keep the object alive with a strong reference.");
364 0 : if (!GetOrCreateDOMReflector(cx, result, args.rval(), desiredProto)) {
365 0 : MOZ_ASSERT(true || JS_IsExceptionPending(cx));
366 0 : return false;
367 : }
368 0 : return true;
369 : }
370 :
371 : static const js::ClassOps sInterfaceObjectClassOps = {
372 : nullptr, /* addProperty */
373 : nullptr, /* delProperty */
374 : nullptr, /* getProperty */
375 : nullptr, /* setProperty */
376 : nullptr, /* enumerate */
377 : nullptr, /* newEnumerate */
378 : nullptr, /* resolve */
379 : nullptr, /* mayResolve */
380 : nullptr, /* finalize */
381 : _constructor, /* call */
382 : nullptr, /* hasInstance */
383 : _constructor, /* construct */
384 : nullptr, /* trace */
385 : };
386 :
387 : static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {
388 : {
389 : "Function",
390 : JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),
391 : &sInterfaceObjectClassOps,
392 : JS_NULL_CLASS_SPEC,
393 : JS_NULL_CLASS_EXT,
394 : &sInterfaceObjectClassObjectOps
395 : },
396 : eInterface,
397 : true,
398 : prototypes::id::PopStateEvent,
399 : PrototypeTraits<prototypes::id::PopStateEvent>::Depth,
400 : sNativePropertyHooks,
401 : "function PopStateEvent() {\n [native code]\n}",
402 : EventBinding::GetConstructorObject
403 : };
404 :
405 : static const DOMIfaceAndProtoJSClass sPrototypeClass = {
406 : {
407 : "PopStateEventPrototype",
408 : JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE + 1 /* slot for the JSObject holding the unforgeable properties */),
409 : JS_NULL_CLASS_OPS,
410 : JS_NULL_CLASS_SPEC,
411 : JS_NULL_CLASS_EXT,
412 : JS_NULL_OBJECT_OPS
413 : },
414 : eInterfacePrototype,
415 : false,
416 : prototypes::id::PopStateEvent,
417 : PrototypeTraits<prototypes::id::PopStateEvent>::Depth,
418 : sNativePropertyHooks,
419 : "[object PopStateEventPrototype]",
420 : EventBinding::GetProtoObject
421 : };
422 :
423 : JSObject*
424 0 : DefineDOMInterface(JSContext* aCx, JS::Handle<JSObject*> aGlobal, JS::Handle<jsid> id, bool aDefineOnGlobal)
425 : {
426 0 : return GetConstructorObjectHandle(aCx, aDefineOnGlobal);
427 : }
428 :
429 : static const js::ClassOps sClassOps = {
430 : _addProperty, /* addProperty */
431 : nullptr, /* delProperty */
432 : nullptr, /* getProperty */
433 : nullptr, /* setProperty */
434 : nullptr, /* enumerate */
435 : nullptr, /* newEnumerate */
436 : nullptr, /* resolve */
437 : nullptr, /* mayResolve */
438 : _finalize, /* finalize */
439 : nullptr, /* call */
440 : nullptr, /* hasInstance */
441 : nullptr, /* construct */
442 : nullptr, /* trace */
443 : };
444 :
445 : static const js::ClassExtension sClassExtension = {
446 : nullptr, /* weakmapKeyDelegateOp */
447 : _objectMoved /* objectMovedOp */
448 : };
449 :
450 : static const DOMJSClass sClass = {
451 : { "PopStateEvent",
452 : JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1) | JSCLASS_SKIP_NURSERY_FINALIZE,
453 : &sClassOps,
454 : JS_NULL_CLASS_SPEC,
455 : &sClassExtension,
456 : JS_NULL_OBJECT_OPS
457 : },
458 : { prototypes::id::Event, prototypes::id::PopStateEvent, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count },
459 : IsBaseOf<nsISupports, mozilla::dom::PopStateEvent >::value,
460 : sNativePropertyHooks,
461 : FindAssociatedGlobalForNative<mozilla::dom::PopStateEvent>::Get,
462 : GetProtoObjectHandle,
463 : GetCCParticipant<mozilla::dom::PopStateEvent>::Get()
464 : };
465 : static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
466 : "Must have the right minimal number of reserved slots.");
467 : static_assert(1 >= 1,
468 : "Must have enough reserved slots.");
469 :
470 : const JSClass*
471 0 : GetJSClass()
472 : {
473 0 : return sClass.ToJSClass();
474 : }
475 :
476 : bool
477 0 : Wrap(JSContext* aCx, mozilla::dom::PopStateEvent* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
478 : {
479 : MOZ_ASSERT(static_cast<mozilla::dom::PopStateEvent*>(aObject) ==
480 : reinterpret_cast<mozilla::dom::PopStateEvent*>(aObject),
481 : "Multiple inheritance for mozilla::dom::PopStateEvent is broken.");
482 : MOZ_ASSERT(static_cast<mozilla::dom::Event*>(aObject) ==
483 : reinterpret_cast<mozilla::dom::Event*>(aObject),
484 : "Multiple inheritance for mozilla::dom::Event is broken.");
485 0 : MOZ_ASSERT(ToSupportsIsCorrect(aObject));
486 0 : MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
487 0 : MOZ_ASSERT(!aCache->GetWrapper(),
488 : "You should probably not be using Wrap() directly; use "
489 : "GetOrCreateDOMReflector instead");
490 :
491 0 : MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
492 : "nsISupports must be on our primary inheritance chain");
493 :
494 0 : JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
495 0 : if (!global) {
496 0 : return false;
497 : }
498 0 : MOZ_ASSERT(JS_IsGlobalObject(global));
499 0 : MOZ_ASSERT(JS::ObjectIsNotGray(global));
500 :
501 : // That might have ended up wrapping us already, due to the wonders
502 : // of XBL. Check for that, and bail out as needed.
503 0 : aReflector.set(aCache->GetWrapper());
504 0 : if (aReflector) {
505 : #ifdef DEBUG
506 0 : binding_detail::AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
507 : #endif // DEBUG
508 0 : return true;
509 : }
510 :
511 0 : JSAutoCompartment ac(aCx, global);
512 0 : JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
513 0 : if (!canonicalProto) {
514 0 : return false;
515 : }
516 0 : JS::Rooted<JSObject*> proto(aCx);
517 0 : if (aGivenProto) {
518 0 : proto = aGivenProto;
519 : // Unfortunately, while aGivenProto was in the compartment of aCx
520 : // coming in, we changed compartments to that of "parent" so may need
521 : // to wrap the proto here.
522 0 : if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {
523 0 : if (!JS_WrapObject(aCx, &proto)) {
524 0 : return false;
525 : }
526 : }
527 : } else {
528 0 : proto = canonicalProto;
529 : }
530 :
531 0 : BindingJSObjectCreator<mozilla::dom::PopStateEvent> creator(aCx);
532 0 : creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
533 0 : if (!aReflector) {
534 0 : return false;
535 : }
536 :
537 0 : aCache->SetWrapper(aReflector);
538 :
539 : // Important: do unforgeable property setup after we have handed
540 : // over ownership of the C++ object to obj as needed, so that if
541 : // we fail and it ends up GCed it won't have problems in the
542 : // finalizer trying to drop its ownership of the C++ object.
543 : JS::Rooted<JSObject*> unforgeableHolder(aCx,
544 0 : &js::GetReservedSlot(canonicalProto, DOM_INTERFACE_PROTO_SLOTS_BASE).toObject());
545 0 : if (!JS_InitializePropertiesFromCompatibleNativeObject(aCx, aReflector, unforgeableHolder)) {
546 0 : aCache->ReleaseWrapper(aObject);
547 0 : aCache->ClearWrapper();
548 0 : return false;
549 : }
550 0 : creator.InitializationSucceeded();
551 :
552 0 : MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
553 : aCache->GetWrapperPreserveColor() == aReflector);
554 : // If proto != canonicalProto, we have to preserve our wrapper;
555 : // otherwise we won't be able to properly recreate it later, since
556 : // we won't know what proto to use. Note that we don't check
557 : // aGivenProto here, since it's entirely possible (and even
558 : // somewhat common) to have a non-null aGivenProto which is the
559 : // same as canonicalProto.
560 0 : if (proto != canonicalProto) {
561 0 : PreserveWrapper(aObject);
562 : }
563 :
564 0 : return true;
565 : }
566 :
567 : const NativePropertyHooks sNativePropertyHooks[] = { {
568 : nullptr,
569 : nullptr,
570 : nullptr,
571 : { sNativeProperties.Upcast(), nullptr },
572 : prototypes::id::PopStateEvent,
573 : constructors::id::PopStateEvent,
574 : EventBinding::sNativePropertyHooks,
575 : &DefaultXrayExpandoObjectClass
576 : } };
577 :
578 : void
579 0 : CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)
580 : {
581 0 : JS::Handle<JSObject*> parentProto(EventBinding::GetProtoObjectHandle(aCx));
582 0 : if (!parentProto) {
583 0 : return;
584 : }
585 :
586 0 : JS::Handle<JSObject*> constructorProto(EventBinding::GetConstructorObjectHandle(aCx));
587 0 : if (!constructorProto) {
588 0 : return;
589 : }
590 :
591 : static bool sIdsInited = false;
592 0 : if (!sIdsInited && NS_IsMainThread()) {
593 0 : if (!InitIds(aCx, sNativeProperties.Upcast())) {
594 0 : return;
595 : }
596 0 : sIdsInited = true;
597 : }
598 :
599 0 : JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::PopStateEvent);
600 0 : JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::PopStateEvent);
601 0 : dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
602 : &sPrototypeClass.mBase, protoCache,
603 : constructorProto, &sInterfaceObjectClass.mBase, 1, nullptr,
604 : interfaceCache,
605 : sNativeProperties.Upcast(),
606 : nullptr,
607 : "PopStateEvent", aDefineOnGlobal,
608 : nullptr,
609 0 : false);
610 :
611 0 : JS::Rooted<JSObject*> unforgeableHolder(aCx);
612 : {
613 0 : JS::Rooted<JSObject*> holderProto(aCx, *protoCache);
614 0 : unforgeableHolder = JS_NewObjectWithoutMetadata(aCx, sClass.ToJSClass(), holderProto);
615 0 : if (!unforgeableHolder) {
616 0 : *protoCache = nullptr;
617 0 : if (interfaceCache) {
618 0 : *interfaceCache = nullptr;
619 : }
620 0 : return;
621 : }
622 : }
623 :
624 0 : if (!DefineUnforgeableAttributes(aCx, unforgeableHolder, sUnforgeableAttributes)) {
625 0 : *protoCache = nullptr;
626 0 : if (interfaceCache) {
627 0 : *interfaceCache = nullptr;
628 : }
629 0 : return;
630 : }
631 :
632 0 : if (*protoCache) {
633 0 : js::SetReservedSlot(*protoCache, DOM_INTERFACE_PROTO_SLOTS_BASE,
634 0 : JS::ObjectValue(*unforgeableHolder));
635 : }
636 : }
637 :
638 : JS::Handle<JSObject*>
639 0 : GetProtoObjectHandle(JSContext* aCx)
640 : {
641 : /* Get the interface prototype object for this class. This will create the
642 : object as needed. */
643 0 : bool aDefineOnGlobal = true;
644 :
645 : /* Make sure our global is sane. Hopefully we can remove this sometime */
646 0 : JSObject* global = JS::CurrentGlobalOrNull(aCx);
647 0 : if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
648 0 : return nullptr;
649 : }
650 :
651 : /* Check to see whether the interface objects are already installed */
652 0 : ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
653 0 : if (!protoAndIfaceCache.HasEntryInSlot(prototypes::id::PopStateEvent)) {
654 0 : JS::Rooted<JSObject*> rootedGlobal(aCx, global);
655 0 : CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
656 : }
657 :
658 : /*
659 : * The object might _still_ be null, but that's OK.
660 : *
661 : * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
662 : * traced by TraceProtoAndIfaceCache() and its contents are never
663 : * changed after they have been set.
664 : *
665 : * Calling address() avoids the read read barrier that does gray
666 : * unmarking, but it's not possible for the object to be gray here.
667 : */
668 :
669 0 : const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(prototypes::id::PopStateEvent);
670 0 : MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
671 0 : return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
672 : }
673 :
674 : JS::Handle<JSObject*>
675 0 : GetConstructorObjectHandle(JSContext* aCx, bool aDefineOnGlobal)
676 : {
677 : /* Get the interface object for this class. This will create the object as
678 : needed. */
679 :
680 : /* Make sure our global is sane. Hopefully we can remove this sometime */
681 0 : JSObject* global = JS::CurrentGlobalOrNull(aCx);
682 0 : if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
683 0 : return nullptr;
684 : }
685 :
686 : /* Check to see whether the interface objects are already installed */
687 0 : ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
688 0 : if (!protoAndIfaceCache.HasEntryInSlot(constructors::id::PopStateEvent)) {
689 0 : JS::Rooted<JSObject*> rootedGlobal(aCx, global);
690 0 : CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
691 : }
692 :
693 : /*
694 : * The object might _still_ be null, but that's OK.
695 : *
696 : * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
697 : * traced by TraceProtoAndIfaceCache() and its contents are never
698 : * changed after they have been set.
699 : *
700 : * Calling address() avoids the read read barrier that does gray
701 : * unmarking, but it's not possible for the object to be gray here.
702 : */
703 :
704 0 : const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(constructors::id::PopStateEvent);
705 0 : MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
706 0 : return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
707 : }
708 :
709 : JSObject*
710 0 : GetConstructorObject(JSContext* aCx)
711 : {
712 0 : return GetConstructorObjectHandle(aCx);
713 : }
714 :
715 : } // namespace PopStateEventBinding
716 :
717 :
718 :
719 : } // namespace dom
720 : } // namespace mozilla
|
