Line data Source code
1 : /* THIS FILE IS AUTOGENERATED FROM PerformanceObserver.webidl BY Codegen.py - DO NOT EDIT */
2 :
3 : #include "AtomList.h"
4 : #include "Performance.h"
5 : #include "PerformanceObserverBinding.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/PerformanceObserver.h"
12 : #include "mozilla/dom/PerformanceObserverEntryList.h"
13 : #include "mozilla/dom/ScriptSettings.h"
14 : #include "mozilla/dom/SimpleGlobalObject.h"
15 : #include "mozilla/dom/XrayExpandoClass.h"
16 :
17 : namespace mozilla {
18 : namespace dom {
19 :
20 :
21 0 : PerformanceObserverInit::PerformanceObserverInit()
22 : {
23 : // Safe to pass a null context if we pass a null value
24 0 : Init(nullptr, JS::NullHandleValue);
25 0 : }
26 :
27 :
28 :
29 : bool
30 0 : PerformanceObserverInit::InitIds(JSContext* cx, PerformanceObserverInitAtoms* 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->entryTypes_id.init(cx, "entryTypes")) {
37 0 : return false;
38 : }
39 0 : return true;
40 : }
41 :
42 : bool
43 0 : PerformanceObserverInit::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 : PerformanceObserverInitAtoms* atomsCache = nullptr;
51 0 : if (cx) {
52 0 : atomsCache = GetAtomCache<PerformanceObserverInitAtoms>(cx);
53 0 : if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
54 0 : return false;
55 : }
56 : }
57 :
58 0 : if (!IsConvertibleToDictionary(val)) {
59 0 : return ThrowErrorMessage(cx, MSG_NOT_DICTIONARY, sourceDescription);
60 : }
61 :
62 0 : bool isNull = val.isNullOrUndefined();
63 : // We only need these if !isNull, in which case we have |cx|.
64 0 : Maybe<JS::Rooted<JSObject *> > object;
65 0 : Maybe<JS::Rooted<JS::Value> > temp;
66 0 : if (!isNull) {
67 0 : MOZ_ASSERT(cx);
68 0 : object.emplace(cx, &val.toObject());
69 0 : temp.emplace(cx);
70 : }
71 0 : if (!isNull) {
72 0 : if (!JS_GetPropertyById(cx, *object, atomsCache->entryTypes_id, temp.ptr())) {
73 0 : return false;
74 : }
75 : }
76 0 : if (!isNull && !temp->isUndefined()) {
77 0 : if (temp.ref().isObject()) {
78 0 : JS::ForOfIterator iter(cx);
79 0 : if (!iter.init(temp.ref(), JS::ForOfIterator::AllowNonIterable)) {
80 0 : return false;
81 : }
82 0 : if (!iter.valueIsIterable()) {
83 0 : ThrowErrorMessage(cx, MSG_NOT_SEQUENCE, "'entryTypes' member of PerformanceObserverInit");
84 0 : return false;
85 : }
86 0 : Sequence<nsString> &arr = mEntryTypes;
87 0 : JS::Rooted<JS::Value> temp(cx);
88 : while (true) {
89 : bool done;
90 0 : if (!iter.next(&temp, &done)) {
91 0 : return false;
92 : }
93 0 : if (done) {
94 0 : break;
95 : }
96 0 : nsString* slotPtr = arr.AppendElement(mozilla::fallible);
97 0 : if (!slotPtr) {
98 0 : JS_ReportOutOfMemory(cx);
99 0 : return false;
100 : }
101 0 : nsString& slot = *slotPtr;
102 0 : if (!ConvertJSValueToString(cx, temp, eStringify, eStringify, slot)) {
103 0 : return false;
104 : }
105 0 : }
106 : } else {
107 0 : ThrowErrorMessage(cx, MSG_NOT_SEQUENCE, "'entryTypes' member of PerformanceObserverInit");
108 0 : return false;
109 : }
110 0 : mIsAnyMemberPresent = true;
111 0 : } else if (cx) {
112 : // Don't error out if we have no cx. In that
113 : // situation the caller is default-constructing us and we'll
114 : // just assume they know what they're doing.
115 0 : return ThrowErrorMessage(cx, MSG_MISSING_REQUIRED_DICTIONARY_MEMBER,
116 0 : "'entryTypes' member of PerformanceObserverInit");
117 : }
118 0 : return true;
119 : }
120 :
121 : bool
122 0 : PerformanceObserverInit::Init(const nsAString& aJSON)
123 : {
124 0 : AutoJSAPI jsapi;
125 0 : JSObject* cleanGlobal = SimpleGlobalObject::Create(SimpleGlobalObject::GlobalType::BindingDetail);
126 0 : if (!cleanGlobal) {
127 0 : return false;
128 : }
129 0 : if (!jsapi.Init(cleanGlobal)) {
130 0 : return false;
131 : }
132 0 : JSContext* cx = jsapi.cx();
133 0 : JS::Rooted<JS::Value> json(cx);
134 0 : bool ok = ParseJSON(cx, aJSON, &json);
135 0 : NS_ENSURE_TRUE(ok, false);
136 0 : return Init(cx, json);
137 : }
138 :
139 : bool
140 0 : PerformanceObserverInit::ToObjectInternal(JSContext* cx, JS::MutableHandle<JS::Value> rval) const
141 : {
142 0 : PerformanceObserverInitAtoms* atomsCache = GetAtomCache<PerformanceObserverInitAtoms>(cx);
143 0 : if (!*reinterpret_cast<jsid**>(atomsCache) && !InitIds(cx, atomsCache)) {
144 0 : return false;
145 : }
146 :
147 0 : JS::Rooted<JSObject*> obj(cx, JS_NewPlainObject(cx));
148 0 : if (!obj) {
149 0 : return false;
150 : }
151 0 : rval.set(JS::ObjectValue(*obj));
152 :
153 : do {
154 : // block for our 'break' successCode and scope for 'temp' and 'currentValue'
155 0 : JS::Rooted<JS::Value> temp(cx);
156 0 : Sequence<nsString> const & currentValue = mEntryTypes;
157 :
158 0 : uint32_t length = currentValue.Length();
159 0 : JS::Rooted<JSObject*> returnArray(cx, JS_NewArrayObject(cx, length));
160 0 : if (!returnArray) {
161 0 : return false;
162 : }
163 : // Scope for 'tmp'
164 : {
165 0 : JS::Rooted<JS::Value> tmp(cx);
166 0 : for (uint32_t sequenceIdx0 = 0; sequenceIdx0 < length; ++sequenceIdx0) {
167 : // Control block to let us common up the JS_DefineElement calls when there
168 : // are different ways to succeed at wrapping the object.
169 : do {
170 0 : if (!xpc::NonVoidStringToJsval(cx, currentValue[sequenceIdx0], &tmp)) {
171 0 : return false;
172 : }
173 0 : break;
174 : } while (0);
175 0 : if (!JS_DefineElement(cx, returnArray, sequenceIdx0, tmp,
176 : JSPROP_ENUMERATE)) {
177 0 : return false;
178 : }
179 : }
180 : }
181 0 : temp.setObject(*returnArray);
182 0 : if (!JS_DefinePropertyById(cx, obj, atomsCache->entryTypes_id, temp, JSPROP_ENUMERATE)) {
183 0 : return false;
184 : }
185 0 : break;
186 : } while(0);
187 :
188 0 : return true;
189 : }
190 :
191 : bool
192 0 : PerformanceObserverInit::ToJSON(nsAString& aJSON) const
193 : {
194 0 : AutoJSAPI jsapi;
195 0 : jsapi.Init();
196 0 : JSContext *cx = jsapi.cx();
197 : // It's safe to use UnprivilegedJunkScopeOrWorkerGlobal here
198 : // because we'll only be creating objects, in ways that have no
199 : // side-effects, followed by a call to JS::ToJSONMaybeSafely,
200 : // which likewise guarantees no side-effects for the sorts of
201 : // things we will pass it.
202 0 : JSAutoCompartment ac(cx, binding_detail::UnprivilegedJunkScopeOrWorkerGlobal());
203 0 : JS::Rooted<JS::Value> val(cx);
204 0 : if (!ToObjectInternal(cx, &val)) {
205 0 : return false;
206 : }
207 0 : JS::Rooted<JSObject*> obj(cx, &val.toObject());
208 0 : return StringifyToJSON(cx, obj, aJSON);
209 : }
210 :
211 : void
212 0 : PerformanceObserverInit::TraceDictionary(JSTracer* trc)
213 : {
214 0 : }
215 :
216 : PerformanceObserverInit&
217 0 : PerformanceObserverInit::operator=(const PerformanceObserverInit& aOther)
218 : {
219 0 : mEntryTypes = aOther.mEntryTypes;
220 0 : return *this;
221 : }
222 :
223 : namespace binding_detail {
224 : } // namespace binding_detail
225 :
226 :
227 : void
228 0 : PerformanceObserverCallback::Call(JSContext* cx, JS::Handle<JS::Value> aThisVal, PerformanceObserverEntryList& entries, PerformanceObserver& observer, ErrorResult& aRv)
229 : {
230 0 : JS::Rooted<JS::Value> rval(cx, JS::UndefinedValue());
231 0 : JS::AutoValueVector argv(cx);
232 0 : if (!argv.resize(2)) {
233 0 : aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
234 0 : return;
235 : }
236 0 : unsigned argc = 2;
237 :
238 : do {
239 0 : if (!GetOrCreateDOMReflector(cx, observer, argv[1])) {
240 0 : MOZ_ASSERT(true || JS_IsExceptionPending(cx));
241 0 : aRv.Throw(NS_ERROR_UNEXPECTED);
242 0 : return;
243 : }
244 0 : break;
245 : } while (0);
246 :
247 : do {
248 0 : if (!GetOrCreateDOMReflector(cx, entries, argv[0])) {
249 0 : MOZ_ASSERT(true || JS_IsExceptionPending(cx));
250 0 : aRv.Throw(NS_ERROR_UNEXPECTED);
251 0 : return;
252 : }
253 0 : break;
254 : } while (0);
255 :
256 0 : JS::Rooted<JS::Value> callable(cx, JS::ObjectValue(*mCallback));
257 0 : if (!JS::Call(cx, aThisVal, callable,
258 0 : JS::HandleValueArray::subarray(argv, 0, argc), &rval)) {
259 0 : aRv.NoteJSContextException(cx);
260 0 : return;
261 : }
262 : }
263 :
264 :
265 :
266 : namespace binding_detail {
267 : } // namespace binding_detail
268 :
269 :
270 : namespace PerformanceObserverBinding {
271 :
272 : static bool
273 0 : observe(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::PerformanceObserver* self, const JSJitMethodCallArgs& args)
274 : {
275 0 : if (MOZ_UNLIKELY(args.length() < 1)) {
276 0 : return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "PerformanceObserver.observe");
277 : }
278 0 : binding_detail::FastPerformanceObserverInit arg0;
279 0 : if (!arg0.Init(cx, args[0], "Argument 1 of PerformanceObserver.observe", false)) {
280 0 : return false;
281 : }
282 0 : binding_detail::FastErrorResult rv;
283 0 : self->Observe(Constify(arg0), rv);
284 0 : if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
285 0 : return false;
286 : }
287 0 : MOZ_ASSERT(!JS_IsExceptionPending(cx));
288 0 : args.rval().setUndefined();
289 0 : return true;
290 : }
291 :
292 : static const JSJitInfo observe_methodinfo = {
293 : { (JSJitGetterOp)observe },
294 : { prototypes::id::PerformanceObserver },
295 : { PrototypeTraits<prototypes::id::PerformanceObserver>::Depth },
296 : JSJitInfo::Method,
297 : JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */
298 : JSVAL_TYPE_UNDEFINED, /* returnType. Not relevant for setters. */
299 : false, /* isInfallible. False in setters. */
300 : false, /* isMovable. Not relevant for setters. */
301 : false, /* isEliminatable. Not relevant for setters. */
302 : false, /* isAlwaysInSlot. Only relevant for getters. */
303 : false, /* isLazilyCachedInSlot. Only relevant for getters. */
304 : false, /* isTypedMethod. Only relevant for methods. */
305 : 0 /* Reserved slot index, if we're stored in a slot, else 0. */
306 : };
307 : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
308 : static_assert(0 < 1, "There is no slot for us");
309 :
310 : static bool
311 0 : disconnect(JSContext* cx, JS::Handle<JSObject*> obj, mozilla::dom::PerformanceObserver* self, const JSJitMethodCallArgs& args)
312 : {
313 0 : self->Disconnect();
314 0 : MOZ_ASSERT(!JS_IsExceptionPending(cx));
315 0 : args.rval().setUndefined();
316 0 : return true;
317 : }
318 :
319 : static const JSJitInfo disconnect_methodinfo = {
320 : { (JSJitGetterOp)disconnect },
321 : { prototypes::id::PerformanceObserver },
322 : { PrototypeTraits<prototypes::id::PerformanceObserver>::Depth },
323 : JSJitInfo::Method,
324 : JSJitInfo::AliasEverything, /* aliasSet. Not relevant for setters. */
325 : JSVAL_TYPE_UNDEFINED, /* returnType. Not relevant for setters. */
326 : true, /* isInfallible. False in setters. */
327 : false, /* isMovable. Not relevant for setters. */
328 : false, /* isEliminatable. Not relevant for setters. */
329 : false, /* isAlwaysInSlot. Only relevant for getters. */
330 : false, /* isLazilyCachedInSlot. Only relevant for getters. */
331 : false, /* isTypedMethod. Only relevant for methods. */
332 : 0 /* Reserved slot index, if we're stored in a slot, else 0. */
333 : };
334 : static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
335 : static_assert(0 < 1, "There is no slot for us");
336 :
337 : static bool
338 0 : _addProperty(JSContext* cx, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::Handle<JS::Value> val)
339 : {
340 0 : mozilla::dom::PerformanceObserver* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::PerformanceObserver>(obj);
341 : // We don't want to preserve if we don't have a wrapper, and we
342 : // obviously can't preserve if we're not initialized.
343 0 : if (self && self->GetWrapperPreserveColor()) {
344 0 : PreserveWrapper(self);
345 : }
346 0 : return true;
347 : }
348 :
349 : static void
350 0 : _finalize(js::FreeOp* fop, JSObject* obj)
351 : {
352 0 : mozilla::dom::PerformanceObserver* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::PerformanceObserver>(obj);
353 0 : if (self) {
354 0 : ClearWrapper(self, self, obj);
355 0 : AddForDeferredFinalization<mozilla::dom::PerformanceObserver>(self);
356 : }
357 0 : }
358 :
359 : static void
360 0 : _objectMoved(JSObject* obj, const JSObject* old)
361 : {
362 0 : mozilla::dom::PerformanceObserver* self = UnwrapPossiblyNotInitializedDOMObject<mozilla::dom::PerformanceObserver>(obj);
363 0 : if (self) {
364 0 : UpdateWrapper(self, self, obj, old);
365 : }
366 0 : }
367 :
368 : // We deliberately use brace-elision to make Visual Studio produce better initalization code.
369 : #if defined(__clang__)
370 : #pragma clang diagnostic push
371 : #pragma clang diagnostic ignored "-Wmissing-braces"
372 : #endif
373 : static const JSFunctionSpec sMethods_specs[] = {
374 : JS_FNSPEC("observe", GenericBindingMethod, reinterpret_cast<const JSJitInfo*>(&observe_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
375 : JS_FNSPEC("disconnect", GenericBindingMethod, reinterpret_cast<const JSJitInfo*>(&disconnect_methodinfo), 0, JSPROP_ENUMERATE, nullptr),
376 : JS_FS_END
377 : };
378 : #if defined(__clang__)
379 : #pragma clang diagnostic pop
380 : #endif
381 :
382 :
383 : // Can't be const because the pref-enabled boolean needs to be writable
384 : static Prefable<const JSFunctionSpec> sMethods[] = {
385 : { nullptr, &sMethods_specs[0] },
386 : { nullptr, nullptr }
387 : };
388 :
389 : static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
390 : "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
391 : static_assert(2 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
392 : "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");
393 :
394 :
395 : static uint16_t sNativeProperties_sortedPropertyIndices[2];
396 : static PropertyInfo sNativeProperties_propertyInfos[2];
397 :
398 : static const NativePropertiesN<1> sNativeProperties = {
399 : false, 0,
400 : false, 0,
401 : true, 0 /* sMethods */,
402 : false, 0,
403 : false, 0,
404 : false, 0,
405 : false, 0,
406 : -1,
407 : 2,
408 : sNativeProperties_sortedPropertyIndices,
409 : {
410 : { sMethods, &sNativeProperties_propertyInfos[0] }
411 : }
412 : };
413 : static_assert(2 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
414 : "We have a property info count that is oversized");
415 :
416 : static bool
417 0 : _constructor(JSContext* cx, unsigned argc, JS::Value* vp)
418 : {
419 0 : JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
420 0 : JS::Rooted<JSObject*> obj(cx, &args.callee());
421 0 : if (!args.isConstructing()) {
422 : // XXXbz wish I could get the name from the callee instead of
423 : // Adding more relocations
424 0 : return ThrowConstructorWithoutNew(cx, "PerformanceObserver");
425 : }
426 :
427 0 : GlobalObject global(cx, obj);
428 0 : if (global.Failed()) {
429 0 : return false;
430 : }
431 :
432 0 : JS::Rooted<JSObject*> desiredProto(cx);
433 0 : if (!GetDesiredProto(cx, args, &desiredProto)) {
434 0 : return false;
435 : }
436 :
437 0 : if (MOZ_UNLIKELY(args.length() < 1)) {
438 0 : return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "PerformanceObserver");
439 : }
440 0 : bool objIsXray = xpc::WrapperFactory::IsXrayWrapper(obj);
441 0 : RootedCallback<OwningNonNull<binding_detail::FastPerformanceObserverCallback>> arg0(cx);
442 0 : if (args[0].isObject()) {
443 0 : if (JS::IsCallable(&args[0].toObject())) {
444 : { // scope for tempRoot
445 0 : JS::Rooted<JSObject*> tempRoot(cx, &args[0].toObject());
446 0 : arg0 = new binding_detail::FastPerformanceObserverCallback(tempRoot);
447 : }
448 : } else {
449 0 : ThrowErrorMessage(cx, MSG_NOT_CALLABLE, "Argument 1 of PerformanceObserver.constructor");
450 0 : return false;
451 : }
452 : } else {
453 0 : ThrowErrorMessage(cx, MSG_NOT_OBJECT, "Argument 1 of PerformanceObserver.constructor");
454 0 : return false;
455 : }
456 0 : Maybe<JSAutoCompartment> ac;
457 0 : if (objIsXray) {
458 0 : obj = js::CheckedUnwrap(obj);
459 0 : if (!obj) {
460 0 : return false;
461 : }
462 0 : ac.emplace(cx, obj);
463 0 : if (!JS_WrapObject(cx, &desiredProto)) {
464 0 : return false;
465 : }
466 : }
467 0 : binding_detail::FastErrorResult rv;
468 0 : auto result(StrongOrRawPtr<mozilla::dom::PerformanceObserver>(mozilla::dom::PerformanceObserver::Constructor(global, NonNullHelper(arg0), rv)));
469 0 : if (MOZ_UNLIKELY(rv.MaybeSetPendingException(cx))) {
470 0 : return false;
471 : }
472 0 : MOZ_ASSERT(!JS_IsExceptionPending(cx));
473 : static_assert(!IsPointer<decltype(result)>::value,
474 : "NewObject implies that we need to keep the object alive with a strong reference.");
475 0 : if (!GetOrCreateDOMReflector(cx, result, args.rval(), desiredProto)) {
476 0 : MOZ_ASSERT(true || JS_IsExceptionPending(cx));
477 0 : return false;
478 : }
479 0 : return true;
480 : }
481 :
482 : static const js::ClassOps sInterfaceObjectClassOps = {
483 : nullptr, /* addProperty */
484 : nullptr, /* delProperty */
485 : nullptr, /* getProperty */
486 : nullptr, /* setProperty */
487 : nullptr, /* enumerate */
488 : nullptr, /* newEnumerate */
489 : nullptr, /* resolve */
490 : nullptr, /* mayResolve */
491 : nullptr, /* finalize */
492 : _constructor, /* call */
493 : nullptr, /* hasInstance */
494 : _constructor, /* construct */
495 : nullptr, /* trace */
496 : };
497 :
498 : static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {
499 : {
500 : "Function",
501 : JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),
502 : &sInterfaceObjectClassOps,
503 : JS_NULL_CLASS_SPEC,
504 : JS_NULL_CLASS_EXT,
505 : &sInterfaceObjectClassObjectOps
506 : },
507 : eInterface,
508 : true,
509 : prototypes::id::PerformanceObserver,
510 : PrototypeTraits<prototypes::id::PerformanceObserver>::Depth,
511 : sNativePropertyHooks,
512 : "function PerformanceObserver() {\n [native code]\n}",
513 : JS::GetRealmFunctionPrototype
514 : };
515 :
516 : static const DOMIfaceAndProtoJSClass sPrototypeClass = {
517 : {
518 : "PerformanceObserverPrototype",
519 : JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
520 : JS_NULL_CLASS_OPS,
521 : JS_NULL_CLASS_SPEC,
522 : JS_NULL_CLASS_EXT,
523 : JS_NULL_OBJECT_OPS
524 : },
525 : eInterfacePrototype,
526 : false,
527 : prototypes::id::PerformanceObserver,
528 : PrototypeTraits<prototypes::id::PerformanceObserver>::Depth,
529 : sNativePropertyHooks,
530 : "[object PerformanceObserverPrototype]",
531 : JS::GetRealmObjectPrototype
532 : };
533 :
534 : bool
535 1 : ConstructorEnabled(JSContext* aCx, JS::Handle<JSObject*> aObj)
536 : {
537 1 : return Performance::IsObserverEnabled(aCx, aObj);
538 : }
539 :
540 : JSObject*
541 0 : DefineDOMInterface(JSContext* aCx, JS::Handle<JSObject*> aGlobal, JS::Handle<jsid> id, bool aDefineOnGlobal)
542 : {
543 0 : return GetConstructorObjectHandle(aCx, aDefineOnGlobal);
544 : }
545 :
546 : static const js::ClassOps sClassOps = {
547 : _addProperty, /* addProperty */
548 : nullptr, /* delProperty */
549 : nullptr, /* getProperty */
550 : nullptr, /* setProperty */
551 : nullptr, /* enumerate */
552 : nullptr, /* newEnumerate */
553 : nullptr, /* resolve */
554 : nullptr, /* mayResolve */
555 : _finalize, /* finalize */
556 : nullptr, /* call */
557 : nullptr, /* hasInstance */
558 : nullptr, /* construct */
559 : nullptr, /* trace */
560 : };
561 :
562 : static const js::ClassExtension sClassExtension = {
563 : nullptr, /* weakmapKeyDelegateOp */
564 : _objectMoved /* objectMovedOp */
565 : };
566 :
567 : static const DOMJSClass sClass = {
568 : { "PerformanceObserver",
569 : JSCLASS_IS_DOMJSCLASS | JSCLASS_FOREGROUND_FINALIZE | JSCLASS_HAS_RESERVED_SLOTS(1),
570 : &sClassOps,
571 : JS_NULL_CLASS_SPEC,
572 : &sClassExtension,
573 : JS_NULL_OBJECT_OPS
574 : },
575 : { prototypes::id::PerformanceObserver, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count },
576 : IsBaseOf<nsISupports, mozilla::dom::PerformanceObserver >::value,
577 : sNativePropertyHooks,
578 : FindAssociatedGlobalForNative<mozilla::dom::PerformanceObserver>::Get,
579 : GetProtoObjectHandle,
580 : GetCCParticipant<mozilla::dom::PerformanceObserver>::Get()
581 : };
582 : static_assert(1 == DOM_INSTANCE_RESERVED_SLOTS,
583 : "Must have the right minimal number of reserved slots.");
584 : static_assert(1 >= 1,
585 : "Must have enough reserved slots.");
586 :
587 : const JSClass*
588 0 : GetJSClass()
589 : {
590 0 : return sClass.ToJSClass();
591 : }
592 :
593 : bool
594 0 : Wrap(JSContext* aCx, mozilla::dom::PerformanceObserver* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
595 : {
596 : MOZ_ASSERT(static_cast<mozilla::dom::PerformanceObserver*>(aObject) ==
597 : reinterpret_cast<mozilla::dom::PerformanceObserver*>(aObject),
598 : "Multiple inheritance for mozilla::dom::PerformanceObserver is broken.");
599 0 : MOZ_ASSERT(ToSupportsIsCorrect(aObject));
600 0 : MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
601 0 : MOZ_ASSERT(!aCache->GetWrapper(),
602 : "You should probably not be using Wrap() directly; use "
603 : "GetOrCreateDOMReflector instead");
604 :
605 0 : MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
606 : "nsISupports must be on our primary inheritance chain");
607 :
608 0 : JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
609 0 : if (!global) {
610 0 : return false;
611 : }
612 0 : MOZ_ASSERT(JS_IsGlobalObject(global));
613 0 : MOZ_ASSERT(JS::ObjectIsNotGray(global));
614 :
615 : // That might have ended up wrapping us already, due to the wonders
616 : // of XBL. Check for that, and bail out as needed.
617 0 : aReflector.set(aCache->GetWrapper());
618 0 : if (aReflector) {
619 : #ifdef DEBUG
620 0 : binding_detail::AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
621 : #endif // DEBUG
622 0 : return true;
623 : }
624 :
625 0 : JSAutoCompartment ac(aCx, global);
626 0 : JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
627 0 : if (!canonicalProto) {
628 0 : return false;
629 : }
630 0 : JS::Rooted<JSObject*> proto(aCx);
631 0 : if (aGivenProto) {
632 0 : proto = aGivenProto;
633 : // Unfortunately, while aGivenProto was in the compartment of aCx
634 : // coming in, we changed compartments to that of "parent" so may need
635 : // to wrap the proto here.
636 0 : if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {
637 0 : if (!JS_WrapObject(aCx, &proto)) {
638 0 : return false;
639 : }
640 : }
641 : } else {
642 0 : proto = canonicalProto;
643 : }
644 :
645 0 : BindingJSObjectCreator<mozilla::dom::PerformanceObserver> creator(aCx);
646 0 : creator.CreateObject(aCx, sClass.ToJSClass(), proto, aObject, aReflector);
647 0 : if (!aReflector) {
648 0 : return false;
649 : }
650 :
651 0 : aCache->SetWrapper(aReflector);
652 0 : creator.InitializationSucceeded();
653 :
654 0 : MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
655 : aCache->GetWrapperPreserveColor() == aReflector);
656 : // If proto != canonicalProto, we have to preserve our wrapper;
657 : // otherwise we won't be able to properly recreate it later, since
658 : // we won't know what proto to use. Note that we don't check
659 : // aGivenProto here, since it's entirely possible (and even
660 : // somewhat common) to have a non-null aGivenProto which is the
661 : // same as canonicalProto.
662 0 : if (proto != canonicalProto) {
663 0 : PreserveWrapper(aObject);
664 : }
665 :
666 0 : return true;
667 : }
668 :
669 : const NativePropertyHooks sNativePropertyHooks[] = { {
670 : nullptr,
671 : nullptr,
672 : nullptr,
673 : { sNativeProperties.Upcast(), nullptr },
674 : prototypes::id::PerformanceObserver,
675 : constructors::id::PerformanceObserver,
676 : nullptr,
677 : &DefaultXrayExpandoObjectClass
678 : } };
679 :
680 : void
681 1 : CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)
682 : {
683 2 : JS::Rooted<JSObject*> parentProto(aCx, JS::GetRealmObjectPrototype(aCx));
684 1 : if (!parentProto) {
685 0 : return;
686 : }
687 :
688 2 : JS::Rooted<JSObject*> constructorProto(aCx, JS::GetRealmFunctionPrototype(aCx));
689 1 : if (!constructorProto) {
690 0 : return;
691 : }
692 :
693 : static bool sIdsInited = false;
694 1 : if (!sIdsInited && NS_IsMainThread()) {
695 0 : if (!InitIds(aCx, sNativeProperties.Upcast())) {
696 0 : return;
697 : }
698 0 : sIdsInited = true;
699 : }
700 :
701 1 : JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::PerformanceObserver);
702 1 : JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::PerformanceObserver);
703 2 : dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
704 : &sPrototypeClass.mBase, protoCache,
705 : constructorProto, &sInterfaceObjectClass.mBase, 1, nullptr,
706 : interfaceCache,
707 : sNativeProperties.Upcast(),
708 : nullptr,
709 : "PerformanceObserver", aDefineOnGlobal,
710 : nullptr,
711 1 : false);
712 : }
713 :
714 : JS::Handle<JSObject*>
715 0 : GetProtoObjectHandle(JSContext* aCx)
716 : {
717 : /* Get the interface prototype object for this class. This will create the
718 : object as needed. */
719 0 : bool aDefineOnGlobal = true;
720 :
721 : /* Make sure our global is sane. Hopefully we can remove this sometime */
722 0 : JSObject* global = JS::CurrentGlobalOrNull(aCx);
723 0 : if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
724 0 : return nullptr;
725 : }
726 :
727 : /* Check to see whether the interface objects are already installed */
728 0 : ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
729 0 : if (!protoAndIfaceCache.HasEntryInSlot(prototypes::id::PerformanceObserver)) {
730 0 : JS::Rooted<JSObject*> rootedGlobal(aCx, global);
731 0 : CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
732 : }
733 :
734 : /*
735 : * The object might _still_ be null, but that's OK.
736 : *
737 : * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
738 : * traced by TraceProtoAndIfaceCache() and its contents are never
739 : * changed after they have been set.
740 : *
741 : * Calling address() avoids the read read barrier that does gray
742 : * unmarking, but it's not possible for the object to be gray here.
743 : */
744 :
745 0 : const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(prototypes::id::PerformanceObserver);
746 0 : MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
747 0 : return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
748 : }
749 :
750 : JS::Handle<JSObject*>
751 1 : GetConstructorObjectHandle(JSContext* aCx, bool aDefineOnGlobal)
752 : {
753 : /* Get the interface object for this class. This will create the object as
754 : needed. */
755 :
756 : /* Make sure our global is sane. Hopefully we can remove this sometime */
757 1 : JSObject* global = JS::CurrentGlobalOrNull(aCx);
758 1 : if (!(js::GetObjectClass(global)->flags & JSCLASS_DOM_GLOBAL)) {
759 0 : return nullptr;
760 : }
761 :
762 : /* Check to see whether the interface objects are already installed */
763 1 : ProtoAndIfaceCache& protoAndIfaceCache = *GetProtoAndIfaceCache(global);
764 1 : if (!protoAndIfaceCache.HasEntryInSlot(constructors::id::PerformanceObserver)) {
765 2 : JS::Rooted<JSObject*> rootedGlobal(aCx, global);
766 1 : CreateInterfaceObjects(aCx, rootedGlobal, protoAndIfaceCache, aDefineOnGlobal);
767 : }
768 :
769 : /*
770 : * The object might _still_ be null, but that's OK.
771 : *
772 : * Calling fromMarkedLocation() is safe because protoAndIfaceCache is
773 : * traced by TraceProtoAndIfaceCache() and its contents are never
774 : * changed after they have been set.
775 : *
776 : * Calling address() avoids the read read barrier that does gray
777 : * unmarking, but it's not possible for the object to be gray here.
778 : */
779 :
780 1 : const JS::Heap<JSObject*>& entrySlot = protoAndIfaceCache.EntrySlotMustExist(constructors::id::PerformanceObserver);
781 1 : MOZ_ASSERT(JS::ObjectIsNotGray(entrySlot));
782 1 : return JS::Handle<JSObject*>::fromMarkedLocation(entrySlot.address());
783 : }
784 :
785 : JSObject*
786 1 : GetConstructorObject(JSContext* aCx)
787 : {
788 1 : return GetConstructorObjectHandle(aCx);
789 : }
790 :
791 : } // namespace PerformanceObserverBinding
792 :
793 :
794 :
795 : } // namespace dom
796 : } // namespace mozilla
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