1423 lines
38 KiB
C++
1423 lines
38 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=8 sts=4 et sw=4 tw=99:
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "jsfriendapi.h"
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#include "mozilla/PodOperations.h"
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#include <stdint.h>
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#include "jscntxt.h"
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#include "jscompartment.h"
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#include "jsgc.h"
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#include "jsobj.h"
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#include "jsprf.h"
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#include "jsweakmap.h"
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#include "jswrapper.h"
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#include "builtin/Promise.h"
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#include "builtin/TestingFunctions.h"
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#include "js/Proxy.h"
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#include "proxy/DeadObjectProxy.h"
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#include "vm/ArgumentsObject.h"
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#include "vm/Time.h"
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#include "vm/WrapperObject.h"
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#include "jsobjinlines.h"
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#include "jsscriptinlines.h"
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#include "vm/EnvironmentObject-inl.h"
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#include "vm/NativeObject-inl.h"
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using namespace js;
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using mozilla::Move;
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using mozilla::PodArrayZero;
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js::ContextFriendFields::ContextFriendFields(bool isJSContext)
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: JS::RootingContext(isJSContext),
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compartment_(nullptr), zone_(nullptr)
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{
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PodArrayZero(nativeStackLimit);
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#if JS_STACK_GROWTH_DIRECTION > 0
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for (int i=0; i<StackKindCount; i++)
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nativeStackLimit[i] = UINTPTR_MAX;
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#endif
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}
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JS_FRIEND_API(void)
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js::SetSourceHook(JSContext* cx, mozilla::UniquePtr<SourceHook> hook)
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{
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cx->sourceHook = Move(hook);
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}
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JS_FRIEND_API(mozilla::UniquePtr<SourceHook>)
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js::ForgetSourceHook(JSContext* cx)
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{
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return Move(cx->sourceHook);
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}
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JS_FRIEND_API(void)
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JS_SetGrayGCRootsTracer(JSContext* cx, JSTraceDataOp traceOp, void* data)
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{
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cx->gc.setGrayRootsTracer(traceOp, data);
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}
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JS_FRIEND_API(JSObject*)
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JS_FindCompilationScope(JSContext* cx, HandleObject objArg)
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{
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RootedObject obj(cx, objArg);
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/*
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* We unwrap wrappers here. This is a little weird, but it's what's being
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* asked of us.
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*/
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if (obj->is<WrapperObject>())
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obj = UncheckedUnwrap(obj);
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/*
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* Get the Window if `obj` is a WindowProxy so that we compile in the
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* correct (global) scope.
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*/
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return ToWindowIfWindowProxy(obj);
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}
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JS_FRIEND_API(JSFunction*)
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JS_GetObjectFunction(JSObject* obj)
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{
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if (obj->is<JSFunction>())
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return &obj->as<JSFunction>();
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return nullptr;
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}
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JS_FRIEND_API(bool)
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JS_SplicePrototype(JSContext* cx, HandleObject obj, HandleObject proto)
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{
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/*
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* Change the prototype of an object which hasn't been used anywhere
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* and does not share its type with another object. Unlike JS_SetPrototype,
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* does not nuke type information for the object.
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*/
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CHECK_REQUEST(cx);
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if (!obj->isSingleton()) {
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/*
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* We can see non-singleton objects when trying to splice prototypes
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* due to mutable __proto__ (ugh).
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*/
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return JS_SetPrototype(cx, obj, proto);
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}
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Rooted<TaggedProto> tagged(cx, TaggedProto(proto));
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return JSObject::splicePrototype(cx, obj, obj->getClass(), tagged);
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}
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JS_FRIEND_API(JSObject*)
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JS_NewObjectWithUniqueType(JSContext* cx, const JSClass* clasp, HandleObject proto)
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{
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/*
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* Create our object with a null proto and then splice in the correct proto
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* after we setSingleton, so that we don't pollute the default
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* ObjectGroup attached to our proto with information about our object, since
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* we're not going to be using that ObjectGroup anyway.
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*/
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RootedObject obj(cx, NewObjectWithGivenProto(cx, (const js::Class*)clasp, nullptr,
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SingletonObject));
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if (!obj)
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return nullptr;
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if (!JS_SplicePrototype(cx, obj, proto))
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return nullptr;
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return obj;
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}
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JS_FRIEND_API(JSObject*)
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JS_NewObjectWithoutMetadata(JSContext* cx, const JSClass* clasp, JS::Handle<JSObject*> proto)
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{
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AutoSuppressAllocationMetadataBuilder suppressMetadata(cx);
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return JS_NewObjectWithGivenProto(cx, clasp, proto);
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}
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JS_FRIEND_API(bool)
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JS_GetIsSecureContext(JSCompartment* compartment)
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{
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return compartment->creationOptions().secureContext();
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}
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JS_FRIEND_API(JSPrincipals*)
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JS_GetCompartmentPrincipals(JSCompartment* compartment)
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{
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return compartment->principals();
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}
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JS_FRIEND_API(void)
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JS_SetCompartmentPrincipals(JSCompartment* compartment, JSPrincipals* principals)
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{
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// Short circuit if there's no change.
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if (principals == compartment->principals())
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return;
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// Any compartment with the trusted principals -- and there can be
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// multiple -- is a system compartment.
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const JSPrincipals* trusted = compartment->runtimeFromMainThread()->trustedPrincipals();
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bool isSystem = principals && principals == trusted;
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// Clear out the old principals, if any.
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if (compartment->principals()) {
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JS_DropPrincipals(compartment->contextFromMainThread(), compartment->principals());
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compartment->setPrincipals(nullptr);
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// We'd like to assert that our new principals is always same-origin
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// with the old one, but JSPrincipals doesn't give us a way to do that.
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// But we can at least assert that we're not switching between system
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// and non-system.
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MOZ_ASSERT(compartment->isSystem() == isSystem);
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}
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// Set up the new principals.
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if (principals) {
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JS_HoldPrincipals(principals);
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compartment->setPrincipals(principals);
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}
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// Update the system flag.
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compartment->setIsSystem(isSystem);
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}
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JS_FRIEND_API(JSPrincipals*)
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JS_GetScriptPrincipals(JSScript* script)
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{
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return script->principals();
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}
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JS_FRIEND_API(bool)
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JS_ScriptHasMutedErrors(JSScript* script)
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{
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return script->mutedErrors();
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}
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JS_FRIEND_API(bool)
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JS_WrapPropertyDescriptor(JSContext* cx, JS::MutableHandle<js::PropertyDescriptor> desc)
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{
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return cx->compartment()->wrap(cx, desc);
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}
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JS_FRIEND_API(void)
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JS_TraceShapeCycleCollectorChildren(JS::CallbackTracer* trc, JS::GCCellPtr shape)
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{
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MOZ_ASSERT(shape.is<Shape>());
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TraceCycleCollectorChildren(trc, &shape.as<Shape>());
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}
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JS_FRIEND_API(void)
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JS_TraceObjectGroupCycleCollectorChildren(JS::CallbackTracer* trc, JS::GCCellPtr group)
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{
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MOZ_ASSERT(group.is<ObjectGroup>());
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TraceCycleCollectorChildren(trc, &group.as<ObjectGroup>());
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}
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static bool
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DefineHelpProperty(JSContext* cx, HandleObject obj, const char* prop, const char* value)
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{
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RootedAtom atom(cx, Atomize(cx, value, strlen(value)));
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if (!atom)
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return false;
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return JS_DefineProperty(cx, obj, prop, atom,
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JSPROP_READONLY | JSPROP_PERMANENT,
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JS_STUBGETTER, JS_STUBSETTER);
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}
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JS_FRIEND_API(bool)
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JS_DefineFunctionsWithHelp(JSContext* cx, HandleObject obj, const JSFunctionSpecWithHelp* fs)
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{
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MOZ_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
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CHECK_REQUEST(cx);
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assertSameCompartment(cx, obj);
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for (; fs->name; fs++) {
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JSAtom* atom = Atomize(cx, fs->name, strlen(fs->name));
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if (!atom)
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return false;
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Rooted<jsid> id(cx, AtomToId(atom));
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RootedFunction fun(cx, DefineFunction(cx, obj, id, fs->call, fs->nargs, fs->flags));
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if (!fun)
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return false;
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if (fs->jitInfo)
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fun->setJitInfo(fs->jitInfo);
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if (fs->usage) {
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if (!DefineHelpProperty(cx, fun, "usage", fs->usage))
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return false;
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}
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if (fs->help) {
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if (!DefineHelpProperty(cx, fun, "help", fs->help))
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return false;
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}
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}
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return true;
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}
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JS_FRIEND_API(bool)
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js::GetBuiltinClass(JSContext* cx, HandleObject obj, ESClass* cls)
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{
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if (MOZ_UNLIKELY(obj->is<ProxyObject>()))
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return Proxy::getBuiltinClass(cx, obj, cls);
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if (obj->is<PlainObject>() || obj->is<UnboxedPlainObject>())
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*cls = ESClass::Object;
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else if (obj->is<ArrayObject>())
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*cls = ESClass::Array;
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else if (obj->is<NumberObject>())
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*cls = ESClass::Number;
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else if (obj->is<StringObject>())
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*cls = ESClass::String;
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else if (obj->is<BooleanObject>())
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*cls = ESClass::Boolean;
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else if (obj->is<RegExpObject>())
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*cls = ESClass::RegExp;
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else if (obj->is<ArrayBufferObject>())
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*cls = ESClass::ArrayBuffer;
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else if (obj->is<SharedArrayBufferObject>())
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*cls = ESClass::SharedArrayBuffer;
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else if (obj->is<DateObject>())
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*cls = ESClass::Date;
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else if (obj->is<SetObject>())
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*cls = ESClass::Set;
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else if (obj->is<MapObject>())
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*cls = ESClass::Map;
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else if (obj->is<PromiseObject>())
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*cls = ESClass::Promise;
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else if (obj->is<MapIteratorObject>())
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*cls = ESClass::MapIterator;
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else if (obj->is<SetIteratorObject>())
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*cls = ESClass::SetIterator;
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else if (obj->is<ArgumentsObject>())
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*cls = ESClass::Arguments;
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else if (obj->is<ErrorObject>())
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*cls = ESClass::Error;
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else
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*cls = ESClass::Other;
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return true;
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}
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JS_FRIEND_API(const char*)
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js::ObjectClassName(JSContext* cx, HandleObject obj)
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{
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return GetObjectClassName(cx, obj);
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}
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JS_FRIEND_API(JS::Zone*)
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js::GetCompartmentZone(JSCompartment* comp)
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{
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return comp->zone();
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}
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JS_FRIEND_API(bool)
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js::IsSystemCompartment(JSCompartment* comp)
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{
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return comp->isSystem();
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}
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JS_FRIEND_API(bool)
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js::IsSystemZone(Zone* zone)
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{
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return zone->isSystem;
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}
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JS_FRIEND_API(bool)
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js::IsAtomsCompartment(JSCompartment* comp)
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{
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return comp->runtimeFromAnyThread()->isAtomsCompartment(comp);
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}
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JS_FRIEND_API(bool)
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js::IsAtomsZone(JS::Zone* zone)
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{
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return zone->runtimeFromAnyThread()->isAtomsZone(zone);
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}
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JS_FRIEND_API(bool)
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js::IsFunctionObject(JSObject* obj)
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{
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return obj->is<JSFunction>();
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}
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JS_FRIEND_API(JSObject*)
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js::GetGlobalForObjectCrossCompartment(JSObject* obj)
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{
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return &obj->global();
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}
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JS_FRIEND_API(JSObject*)
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js::GetPrototypeNoProxy(JSObject* obj)
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{
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MOZ_ASSERT(!obj->is<js::ProxyObject>());
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return obj->staticPrototype();
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}
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JS_FRIEND_API(void)
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js::AssertSameCompartment(JSContext* cx, JSObject* obj)
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{
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assertSameCompartment(cx, obj);
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}
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#ifdef DEBUG
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JS_FRIEND_API(void)
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js::AssertSameCompartment(JSObject* objA, JSObject* objB)
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{
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MOZ_ASSERT(objA->compartment() == objB->compartment());
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}
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#endif
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JS_FRIEND_API(void)
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js::NotifyAnimationActivity(JSObject* obj)
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{
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int64_t timeNow = PRMJ_Now();
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obj->compartment()->lastAnimationTime = timeNow;
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obj->runtimeFromMainThread()->lastAnimationTime = timeNow;
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}
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JS_FRIEND_API(uint32_t)
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js::GetObjectSlotSpan(JSObject* obj)
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{
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return obj->as<NativeObject>().slotSpan();
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}
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JS_FRIEND_API(bool)
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js::IsObjectInContextCompartment(JSObject* obj, const JSContext* cx)
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{
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return obj->compartment() == cx->compartment();
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}
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JS_FRIEND_API(bool)
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js::RunningWithTrustedPrincipals(JSContext* cx)
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{
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return cx->runningWithTrustedPrincipals();
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}
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JS_FRIEND_API(JSFunction*)
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js::GetOutermostEnclosingFunctionOfScriptedCaller(JSContext* cx)
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{
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ScriptFrameIter iter(cx);
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// Skip eval frames.
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while (!iter.done() && iter.isEvalFrame())
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++iter;
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if (iter.done())
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return nullptr;
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if (!iter.isFunctionFrame())
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return nullptr;
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if (iter.compartment() != cx->compartment())
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return nullptr;
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RootedFunction curr(cx, iter.callee(cx));
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for (ScopeIter si(curr->nonLazyScript()); si; si++) {
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if (si.kind() == ScopeKind::Function)
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curr = si.scope()->as<FunctionScope>().canonicalFunction();
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}
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assertSameCompartment(cx, curr);
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return curr;
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}
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JS_FRIEND_API(JSFunction*)
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js::DefineFunctionWithReserved(JSContext* cx, JSObject* objArg, const char* name, JSNative call,
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unsigned nargs, unsigned attrs)
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{
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RootedObject obj(cx, objArg);
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MOZ_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
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CHECK_REQUEST(cx);
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assertSameCompartment(cx, obj);
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JSAtom* atom = Atomize(cx, name, strlen(name));
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if (!atom)
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return nullptr;
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Rooted<jsid> id(cx, AtomToId(atom));
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return DefineFunction(cx, obj, id, call, nargs, attrs, gc::AllocKind::FUNCTION_EXTENDED);
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}
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JS_FRIEND_API(JSFunction*)
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js::NewFunctionWithReserved(JSContext* cx, JSNative native, unsigned nargs, unsigned flags,
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const char* name)
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{
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MOZ_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
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CHECK_REQUEST(cx);
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RootedAtom atom(cx);
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if (name) {
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atom = Atomize(cx, name, strlen(name));
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if (!atom)
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return nullptr;
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}
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return (flags & JSFUN_CONSTRUCTOR) ?
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NewNativeConstructor(cx, native, nargs, atom, gc::AllocKind::FUNCTION_EXTENDED) :
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NewNativeFunction(cx, native, nargs, atom, gc::AllocKind::FUNCTION_EXTENDED);
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}
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JS_FRIEND_API(JSFunction*)
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js::NewFunctionByIdWithReserved(JSContext* cx, JSNative native, unsigned nargs, unsigned flags,
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jsid id)
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|
{
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MOZ_ASSERT(JSID_IS_STRING(id));
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MOZ_ASSERT(!cx->runtime()->isAtomsCompartment(cx->compartment()));
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CHECK_REQUEST(cx);
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RootedAtom atom(cx, JSID_TO_ATOM(id));
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return (flags & JSFUN_CONSTRUCTOR) ?
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NewNativeConstructor(cx, native, nargs, atom, gc::AllocKind::FUNCTION_EXTENDED) :
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NewNativeFunction(cx, native, nargs, atom, gc::AllocKind::FUNCTION_EXTENDED);
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}
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JS_FRIEND_API(const Value&)
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js::GetFunctionNativeReserved(JSObject* fun, size_t which)
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{
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MOZ_ASSERT(fun->as<JSFunction>().isNative());
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return fun->as<JSFunction>().getExtendedSlot(which);
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}
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JS_FRIEND_API(void)
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js::SetFunctionNativeReserved(JSObject* fun, size_t which, const Value& val)
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{
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MOZ_ASSERT(fun->as<JSFunction>().isNative());
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MOZ_ASSERT_IF(val.isObject(), val.toObject().compartment() == fun->compartment());
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fun->as<JSFunction>().setExtendedSlot(which, val);
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}
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JS_FRIEND_API(bool)
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js::FunctionHasNativeReserved(JSObject* fun)
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{
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MOZ_ASSERT(fun->as<JSFunction>().isNative());
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return fun->as<JSFunction>().isExtended();
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}
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JS_FRIEND_API(bool)
|
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js::GetObjectProto(JSContext* cx, JS::Handle<JSObject*> obj, JS::MutableHandle<JSObject*> proto)
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{
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|
if (IsProxy(obj))
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return JS_GetPrototype(cx, obj, proto);
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|
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proto.set(reinterpret_cast<const shadow::Object*>(obj.get())->group->proto);
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return true;
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}
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|
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JS_FRIEND_API(JSObject*)
|
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js::GetStaticPrototype(JSObject* obj)
|
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{
|
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MOZ_ASSERT(obj->hasStaticPrototype());
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return obj->staticPrototype();
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}
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|
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JS_FRIEND_API(bool)
|
|
js::GetOriginalEval(JSContext* cx, HandleObject scope, MutableHandleObject eval)
|
|
{
|
|
assertSameCompartment(cx, scope);
|
|
Rooted<GlobalObject*> global(cx, &scope->global());
|
|
return GlobalObject::getOrCreateEval(cx, global, eval);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::SetReservedOrProxyPrivateSlotWithBarrier(JSObject* obj, size_t slot, const js::Value& value)
|
|
{
|
|
if (IsProxy(obj)) {
|
|
MOZ_ASSERT(slot == 0);
|
|
obj->as<ProxyObject>().setSameCompartmentPrivate(value);
|
|
} else {
|
|
obj->as<NativeObject>().setSlot(slot, value);
|
|
}
|
|
}
|
|
|
|
void
|
|
js::SetPreserveWrapperCallback(JSContext* cx, PreserveWrapperCallback callback)
|
|
{
|
|
cx->preserveWrapperCallback = callback;
|
|
}
|
|
|
|
namespace js {
|
|
// Defined in vm/GlobalObject.cpp.
|
|
extern size_t sSetProtoCalled;
|
|
} // namespace js
|
|
|
|
JS_FRIEND_API(size_t)
|
|
JS_SetProtoCalled(JSContext*)
|
|
{
|
|
return sSetProtoCalled;
|
|
}
|
|
|
|
// Defined in jsiter.cpp.
|
|
extern size_t sCustomIteratorCount;
|
|
|
|
JS_FRIEND_API(size_t)
|
|
JS_GetCustomIteratorCount(JSContext* cx)
|
|
{
|
|
return sCustomIteratorCount;
|
|
}
|
|
|
|
JS_FRIEND_API(unsigned)
|
|
JS_PCToLineNumber(JSScript* script, jsbytecode* pc, unsigned* columnp)
|
|
{
|
|
return PCToLineNumber(script, pc, columnp);
|
|
}
|
|
|
|
JS_FRIEND_API(bool)
|
|
JS_IsDeadWrapper(JSObject* obj)
|
|
{
|
|
return IsDeadProxyObject(obj);
|
|
}
|
|
|
|
void
|
|
js::TraceWeakMaps(WeakMapTracer* trc)
|
|
{
|
|
WeakMapBase::traceAllMappings(trc);
|
|
}
|
|
|
|
extern JS_FRIEND_API(bool)
|
|
js::AreGCGrayBitsValid(JSContext* cx)
|
|
{
|
|
return cx->areGCGrayBitsValid();
|
|
}
|
|
|
|
JS_FRIEND_API(bool)
|
|
js::ZoneGlobalsAreAllGray(JS::Zone* zone)
|
|
{
|
|
for (CompartmentsInZoneIter comp(zone); !comp.done(); comp.next()) {
|
|
JSObject* obj = comp->unsafeUnbarrieredMaybeGlobal();
|
|
if (!obj || !JS::ObjectIsMarkedGray(obj))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
namespace {
|
|
struct VisitGrayCallbackFunctor {
|
|
GCThingCallback callback_;
|
|
void* closure_;
|
|
VisitGrayCallbackFunctor(GCThingCallback callback, void* closure)
|
|
: callback_(callback), closure_(closure)
|
|
{}
|
|
|
|
template <class T>
|
|
void operator()(T tp) const {
|
|
if ((*tp)->isTenured() && (*tp)->asTenured().isMarked(gc::GRAY))
|
|
callback_(closure_, JS::GCCellPtr(*tp));
|
|
}
|
|
};
|
|
} // namespace (anonymous)
|
|
|
|
JS_FRIEND_API(void)
|
|
js::VisitGrayWrapperTargets(Zone* zone, GCThingCallback callback, void* closure)
|
|
{
|
|
for (CompartmentsInZoneIter comp(zone); !comp.done(); comp.next()) {
|
|
for (JSCompartment::WrapperEnum e(comp); !e.empty(); e.popFront())
|
|
e.front().mutableKey().applyToWrapped(VisitGrayCallbackFunctor(callback, closure));
|
|
}
|
|
}
|
|
|
|
JS_FRIEND_API(JSObject*)
|
|
js::GetWeakmapKeyDelegate(JSObject* key)
|
|
{
|
|
if (JSWeakmapKeyDelegateOp op = key->getClass()->extWeakmapKeyDelegateOp())
|
|
return op(key);
|
|
return nullptr;
|
|
}
|
|
|
|
JS_FRIEND_API(JSLinearString*)
|
|
js::StringToLinearStringSlow(JSContext* cx, JSString* str)
|
|
{
|
|
return str->ensureLinear(cx);
|
|
}
|
|
|
|
JS_FRIEND_API(JSObject*)
|
|
JS_CloneObject(JSContext* cx, HandleObject obj, HandleObject protoArg)
|
|
{
|
|
Rooted<TaggedProto> proto(cx, TaggedProto(protoArg.get()));
|
|
return CloneObject(cx, obj, proto);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
|
|
JS_FRIEND_API(void)
|
|
js::DumpString(JSString* str, FILE* fp)
|
|
{
|
|
str->dump(fp);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::DumpAtom(JSAtom* atom, FILE* fp)
|
|
{
|
|
atom->dump(fp);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::DumpChars(const char16_t* s, size_t n, FILE* fp)
|
|
{
|
|
fprintf(fp, "char16_t * (%p) = ", (void*) s);
|
|
JSString::dumpChars(s, n, fp);
|
|
fputc('\n', fp);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::DumpObject(JSObject* obj, FILE* fp)
|
|
{
|
|
if (!obj) {
|
|
fprintf(fp, "NULL\n");
|
|
return;
|
|
}
|
|
obj->dump(fp);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::DumpString(JSString* str) {
|
|
DumpString(str, stderr);
|
|
}
|
|
JS_FRIEND_API(void)
|
|
js::DumpAtom(JSAtom* atom) {
|
|
DumpAtom(atom, stderr);
|
|
}
|
|
JS_FRIEND_API(void)
|
|
js::DumpObject(JSObject* obj) {
|
|
DumpObject(obj, stderr);
|
|
}
|
|
JS_FRIEND_API(void)
|
|
js::DumpChars(const char16_t* s, size_t n) {
|
|
DumpChars(s, n, stderr);
|
|
}
|
|
JS_FRIEND_API(void)
|
|
js::DumpValue(const JS::Value& val) {
|
|
DumpValue(val, stderr);
|
|
}
|
|
JS_FRIEND_API(void)
|
|
js::DumpId(jsid id) {
|
|
DumpId(id, stderr);
|
|
}
|
|
JS_FRIEND_API(void)
|
|
js::DumpInterpreterFrame(JSContext* cx, InterpreterFrame* start)
|
|
{
|
|
DumpInterpreterFrame(cx, stderr, start);
|
|
}
|
|
JS_FRIEND_API(bool)
|
|
js::DumpPC(JSContext* cx) {
|
|
return DumpPC(cx, stdout);
|
|
}
|
|
JS_FRIEND_API(bool)
|
|
js::DumpScript(JSContext* cx, JSScript* scriptArg)
|
|
{
|
|
return DumpScript(cx, scriptArg, stdout);
|
|
}
|
|
|
|
#endif
|
|
|
|
static const char*
|
|
FormatValue(JSContext* cx, const Value& vArg, JSAutoByteString& bytes)
|
|
{
|
|
RootedValue v(cx, vArg);
|
|
|
|
if (v.isMagic(JS_OPTIMIZED_OUT))
|
|
return "[unavailable]";
|
|
|
|
/*
|
|
* We could use Maybe<AutoCompartment> here, but G++ can't quite follow
|
|
* that, and warns about uninitialized members being used in the
|
|
* destructor.
|
|
*/
|
|
RootedString str(cx);
|
|
if (v.isObject()) {
|
|
AutoCompartment ac(cx, &v.toObject());
|
|
str = ToString<CanGC>(cx, v);
|
|
} else {
|
|
str = ToString<CanGC>(cx, v);
|
|
}
|
|
|
|
if (!str)
|
|
return nullptr;
|
|
const char* buf = bytes.encodeLatin1(cx, str);
|
|
if (!buf)
|
|
return nullptr;
|
|
const char* found = strstr(buf, "function ");
|
|
if (found && (found - buf <= 2))
|
|
return "[function]";
|
|
return buf;
|
|
}
|
|
|
|
// Wrapper for JS_sprintf_append() that reports allocation failure to the
|
|
// context.
|
|
static char*
|
|
MOZ_FORMAT_PRINTF(3, 4)
|
|
sprintf_append(JSContext* cx, char* buf, const char* fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start(ap, fmt);
|
|
char* result = JS_vsprintf_append(buf, fmt, ap);
|
|
va_end(ap);
|
|
|
|
if (!result) {
|
|
ReportOutOfMemory(cx);
|
|
return nullptr;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static char*
|
|
FormatFrame(JSContext* cx, const FrameIter& iter, char* buf, int num,
|
|
bool showArgs, bool showLocals, bool showThisProps)
|
|
{
|
|
MOZ_ASSERT(!cx->isExceptionPending());
|
|
RootedScript script(cx, iter.script());
|
|
jsbytecode* pc = iter.pc();
|
|
|
|
RootedObject envChain(cx, iter.environmentChain(cx));
|
|
JSAutoCompartment ac(cx, envChain);
|
|
|
|
const char* filename = script->filename();
|
|
unsigned lineno = PCToLineNumber(script, pc);
|
|
RootedFunction fun(cx, iter.maybeCallee(cx));
|
|
RootedString funname(cx);
|
|
if (fun)
|
|
funname = fun->displayAtom();
|
|
|
|
RootedValue thisVal(cx);
|
|
if (iter.hasUsableAbstractFramePtr() &&
|
|
iter.isFunctionFrame() &&
|
|
fun && !fun->isArrow() && !fun->isDerivedClassConstructor() &&
|
|
!(fun->isBoundFunction() && iter.isConstructing()))
|
|
{
|
|
if (!GetFunctionThis(cx, iter.abstractFramePtr(), &thisVal))
|
|
return nullptr;
|
|
}
|
|
|
|
// print the frame number and function name
|
|
if (funname) {
|
|
JSAutoByteString funbytes;
|
|
char* str = funbytes.encodeLatin1(cx, funname);
|
|
if (!str)
|
|
return nullptr;
|
|
buf = sprintf_append(cx, buf, "%d %s(", num, str);
|
|
} else if (fun) {
|
|
buf = sprintf_append(cx, buf, "%d anonymous(", num);
|
|
} else {
|
|
buf = sprintf_append(cx, buf, "%d <TOP LEVEL>", num);
|
|
}
|
|
if (!buf)
|
|
return nullptr;
|
|
|
|
if (showArgs && iter.hasArgs()) {
|
|
PositionalFormalParameterIter fi(script);
|
|
bool first = true;
|
|
for (unsigned i = 0; i < iter.numActualArgs(); i++) {
|
|
RootedValue arg(cx);
|
|
if (i < iter.numFormalArgs() && fi.closedOver()) {
|
|
arg = iter.callObj(cx).aliasedBinding(fi);
|
|
} else if (iter.hasUsableAbstractFramePtr()) {
|
|
if (script->analyzedArgsUsage() &&
|
|
script->argsObjAliasesFormals() &&
|
|
iter.hasArgsObj())
|
|
{
|
|
arg = iter.argsObj().arg(i);
|
|
} else {
|
|
arg = iter.unaliasedActual(i, DONT_CHECK_ALIASING);
|
|
}
|
|
} else {
|
|
arg = MagicValue(JS_OPTIMIZED_OUT);
|
|
}
|
|
|
|
JSAutoByteString valueBytes;
|
|
const char* value = FormatValue(cx, arg, valueBytes);
|
|
if (!value) {
|
|
if (cx->isThrowingOutOfMemory())
|
|
return nullptr;
|
|
cx->clearPendingException();
|
|
}
|
|
|
|
JSAutoByteString nameBytes;
|
|
const char* name = nullptr;
|
|
|
|
if (i < iter.numFormalArgs()) {
|
|
MOZ_ASSERT(fi.argumentSlot() == i);
|
|
if (!fi.isDestructured()) {
|
|
name = nameBytes.encodeLatin1(cx, fi.name());
|
|
if (!name)
|
|
return nullptr;
|
|
} else {
|
|
name = "(destructured parameter)";
|
|
}
|
|
fi++;
|
|
}
|
|
|
|
if (value) {
|
|
buf = sprintf_append(cx, buf, "%s%s%s%s%s%s",
|
|
!first ? ", " : "",
|
|
name ? name :"",
|
|
name ? " = " : "",
|
|
arg.isString() ? "\"" : "",
|
|
value,
|
|
arg.isString() ? "\"" : "");
|
|
if (!buf)
|
|
return nullptr;
|
|
|
|
first = false;
|
|
} else {
|
|
buf = sprintf_append(cx, buf,
|
|
" <Failed to get argument while inspecting stack frame>\n");
|
|
if (!buf)
|
|
return nullptr;
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
// print filename and line number
|
|
buf = sprintf_append(cx, buf, "%s [\"%s\":%d]\n",
|
|
fun ? ")" : "",
|
|
filename ? filename : "<unknown>",
|
|
lineno);
|
|
if (!buf)
|
|
return nullptr;
|
|
|
|
|
|
// Note: Right now we don't dump the local variables anymore, because
|
|
// that is hard to support across all the JITs etc.
|
|
|
|
// print the value of 'this'
|
|
if (showLocals) {
|
|
if (!thisVal.isUndefined()) {
|
|
JSAutoByteString thisValBytes;
|
|
RootedString thisValStr(cx, ToString<CanGC>(cx, thisVal));
|
|
if (!thisValStr) {
|
|
if (cx->isThrowingOutOfMemory())
|
|
return nullptr;
|
|
cx->clearPendingException();
|
|
}
|
|
if (thisValStr) {
|
|
const char* str = thisValBytes.encodeLatin1(cx, thisValStr);
|
|
if (!str)
|
|
return nullptr;
|
|
buf = sprintf_append(cx, buf, " this = %s\n", str);
|
|
} else {
|
|
buf = sprintf_append(cx, buf, " <failed to get 'this' value>\n");
|
|
}
|
|
if (!buf)
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
if (showThisProps && thisVal.isObject()) {
|
|
RootedObject obj(cx, &thisVal.toObject());
|
|
|
|
AutoIdVector keys(cx);
|
|
if (!GetPropertyKeys(cx, obj, JSITER_OWNONLY, &keys)) {
|
|
if (cx->isThrowingOutOfMemory())
|
|
return nullptr;
|
|
cx->clearPendingException();
|
|
}
|
|
|
|
RootedId id(cx);
|
|
for (size_t i = 0; i < keys.length(); i++) {
|
|
RootedId id(cx, keys[i]);
|
|
RootedValue key(cx, IdToValue(id));
|
|
RootedValue v(cx);
|
|
|
|
if (!GetProperty(cx, obj, obj, id, &v)) {
|
|
if (cx->isThrowingOutOfMemory())
|
|
return nullptr;
|
|
cx->clearPendingException();
|
|
buf = sprintf_append(cx, buf,
|
|
" <Failed to fetch property while inspecting stack frame>\n");
|
|
if (!buf)
|
|
return nullptr;
|
|
continue;
|
|
}
|
|
|
|
JSAutoByteString nameBytes;
|
|
const char* name = FormatValue(cx, key, nameBytes);
|
|
if (!name) {
|
|
if (cx->isThrowingOutOfMemory())
|
|
return nullptr;
|
|
cx->clearPendingException();
|
|
}
|
|
|
|
JSAutoByteString valueBytes;
|
|
const char* value = FormatValue(cx, v, valueBytes);
|
|
if (!value) {
|
|
if (cx->isThrowingOutOfMemory())
|
|
return nullptr;
|
|
cx->clearPendingException();
|
|
}
|
|
|
|
if (name && value) {
|
|
buf = sprintf_append(cx, buf, " this.%s = %s%s%s\n",
|
|
name,
|
|
v.isString() ? "\"" : "",
|
|
value,
|
|
v.isString() ? "\"" : "");
|
|
} else {
|
|
buf = sprintf_append(cx, buf,
|
|
" <Failed to format values while inspecting stack frame>\n");
|
|
}
|
|
if (!buf)
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(!cx->isExceptionPending());
|
|
return buf;
|
|
}
|
|
|
|
static char*
|
|
FormatWasmFrame(JSContext* cx, const FrameIter& iter, char* buf, int num, bool showArgs)
|
|
{
|
|
JSAtom* functionDisplayAtom = iter.functionDisplayAtom();
|
|
UniqueChars nameStr;
|
|
if (functionDisplayAtom)
|
|
nameStr = StringToNewUTF8CharsZ(cx, *functionDisplayAtom);
|
|
|
|
buf = sprintf_append(cx, buf, "%d %s()",
|
|
num,
|
|
nameStr ? nameStr.get() : "<wasm-function>");
|
|
if (!buf)
|
|
return nullptr;
|
|
const char* filename = iter.filename();
|
|
uint32_t lineno = iter.computeLine();
|
|
buf = sprintf_append(cx, buf, " [\"%s\":%d]\n",
|
|
filename ? filename : "<unknown>",
|
|
lineno);
|
|
|
|
MOZ_ASSERT(!cx->isExceptionPending());
|
|
return buf;
|
|
}
|
|
|
|
JS_FRIEND_API(char*)
|
|
JS::FormatStackDump(JSContext* cx, char* buf, bool showArgs, bool showLocals, bool showThisProps)
|
|
{
|
|
int num = 0;
|
|
|
|
for (AllFramesIter i(cx); !i.done(); ++i) {
|
|
if (i.hasScript())
|
|
buf = FormatFrame(cx, i, buf, num, showArgs, showLocals, showThisProps);
|
|
else
|
|
buf = FormatWasmFrame(cx, i, buf, num, showArgs);
|
|
if (!buf)
|
|
return nullptr;
|
|
num++;
|
|
}
|
|
|
|
if (!num)
|
|
buf = JS_sprintf_append(buf, "JavaScript stack is empty\n");
|
|
|
|
return buf;
|
|
}
|
|
|
|
extern JS_FRIEND_API(bool)
|
|
JS::ForceLexicalInitialization(JSContext *cx, HandleObject obj)
|
|
{
|
|
AssertHeapIsIdle(cx);
|
|
CHECK_REQUEST(cx);
|
|
assertSameCompartment(cx, obj);
|
|
|
|
bool initializedAny = false;
|
|
NativeObject* nobj = &obj->as<NativeObject>();
|
|
|
|
for (Shape::Range<NoGC> r(nobj->lastProperty()); !r.empty(); r.popFront()) {
|
|
Shape* s = &r.front();
|
|
Value v = nobj->getSlot(s->slot());
|
|
if (s->hasSlot() && v.isMagic() && v.whyMagic() == JS_UNINITIALIZED_LEXICAL) {
|
|
nobj->setSlot(s->slot(), UndefinedValue());
|
|
initializedAny = true;
|
|
}
|
|
|
|
}
|
|
return initializedAny;
|
|
}
|
|
|
|
struct DumpHeapTracer : public JS::CallbackTracer, public WeakMapTracer
|
|
{
|
|
const char* prefix;
|
|
FILE* output;
|
|
|
|
DumpHeapTracer(FILE* fp, JSContext* cx)
|
|
: JS::CallbackTracer(cx, DoNotTraceWeakMaps),
|
|
js::WeakMapTracer(cx), prefix(""), output(fp)
|
|
{}
|
|
|
|
private:
|
|
void trace(JSObject* map, JS::GCCellPtr key, JS::GCCellPtr value) override {
|
|
JSObject* kdelegate = nullptr;
|
|
if (key.is<JSObject>())
|
|
kdelegate = js::GetWeakmapKeyDelegate(&key.as<JSObject>());
|
|
|
|
fprintf(output, "WeakMapEntry map=%p key=%p keyDelegate=%p value=%p\n",
|
|
map, key.asCell(), kdelegate, value.asCell());
|
|
}
|
|
|
|
void onChild(const JS::GCCellPtr& thing) override;
|
|
};
|
|
|
|
static char
|
|
MarkDescriptor(void* thing)
|
|
{
|
|
gc::TenuredCell* cell = gc::TenuredCell::fromPointer(thing);
|
|
if (cell->isMarked(gc::BLACK))
|
|
return cell->isMarked(gc::GRAY) ? 'G' : 'B';
|
|
else
|
|
return cell->isMarked(gc::GRAY) ? 'X' : 'W';
|
|
}
|
|
|
|
static void
|
|
DumpHeapVisitZone(JSRuntime* rt, void* data, Zone* zone)
|
|
{
|
|
DumpHeapTracer* dtrc = static_cast<DumpHeapTracer*>(data);
|
|
fprintf(dtrc->output, "# zone %p\n", (void*)zone);
|
|
}
|
|
|
|
static void
|
|
DumpHeapVisitCompartment(JSContext* cx, void* data, JSCompartment* comp)
|
|
{
|
|
char name[1024];
|
|
if (cx->compartmentNameCallback)
|
|
(*cx->compartmentNameCallback)(cx, comp, name, sizeof(name));
|
|
else
|
|
strcpy(name, "<unknown>");
|
|
|
|
DumpHeapTracer* dtrc = static_cast<DumpHeapTracer*>(data);
|
|
fprintf(dtrc->output, "# compartment %s [in zone %p]\n", name, (void*)comp->zone());
|
|
}
|
|
|
|
static void
|
|
DumpHeapVisitArena(JSRuntime* rt, void* data, gc::Arena* arena,
|
|
JS::TraceKind traceKind, size_t thingSize)
|
|
{
|
|
DumpHeapTracer* dtrc = static_cast<DumpHeapTracer*>(data);
|
|
fprintf(dtrc->output, "# arena allockind=%u size=%u\n",
|
|
unsigned(arena->getAllocKind()), unsigned(thingSize));
|
|
}
|
|
|
|
static void
|
|
DumpHeapVisitCell(JSRuntime* rt, void* data, void* thing,
|
|
JS::TraceKind traceKind, size_t thingSize)
|
|
{
|
|
DumpHeapTracer* dtrc = static_cast<DumpHeapTracer*>(data);
|
|
char cellDesc[1024 * 32];
|
|
JS_GetTraceThingInfo(cellDesc, sizeof(cellDesc), dtrc, thing, traceKind, true);
|
|
fprintf(dtrc->output, "%p %c %s\n", thing, MarkDescriptor(thing), cellDesc);
|
|
js::TraceChildren(dtrc, thing, traceKind);
|
|
}
|
|
|
|
void
|
|
DumpHeapTracer::onChild(const JS::GCCellPtr& thing)
|
|
{
|
|
if (gc::IsInsideNursery(thing.asCell()))
|
|
return;
|
|
|
|
char buffer[1024];
|
|
getTracingEdgeName(buffer, sizeof(buffer));
|
|
fprintf(output, "%s%p %c %s\n", prefix, thing.asCell(), MarkDescriptor(thing.asCell()), buffer);
|
|
}
|
|
|
|
void
|
|
js::DumpHeap(JSContext* cx, FILE* fp, js::DumpHeapNurseryBehaviour nurseryBehaviour)
|
|
{
|
|
if (nurseryBehaviour == js::CollectNurseryBeforeDump)
|
|
cx->gc.evictNursery(JS::gcreason::API);
|
|
|
|
DumpHeapTracer dtrc(fp, cx);
|
|
fprintf(dtrc.output, "# Roots.\n");
|
|
TraceRuntime(&dtrc);
|
|
|
|
fprintf(dtrc.output, "# Weak maps.\n");
|
|
WeakMapBase::traceAllMappings(&dtrc);
|
|
|
|
fprintf(dtrc.output, "==========\n");
|
|
|
|
dtrc.prefix = "> ";
|
|
IterateZonesCompartmentsArenasCells(cx, &dtrc,
|
|
DumpHeapVisitZone,
|
|
DumpHeapVisitCompartment,
|
|
DumpHeapVisitArena,
|
|
DumpHeapVisitCell);
|
|
|
|
fflush(dtrc.output);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::SetActivityCallback(JSContext* cx, ActivityCallback cb, void* arg)
|
|
{
|
|
cx->activityCallback = cb;
|
|
cx->activityCallbackArg = arg;
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
JS::NotifyDidPaint(JSContext* cx)
|
|
{
|
|
cx->gc.notifyDidPaint();
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
JS::PokeGC(JSContext* cx)
|
|
{
|
|
cx->gc.poke();
|
|
}
|
|
|
|
JS_FRIEND_API(JSCompartment*)
|
|
js::GetAnyCompartmentInZone(JS::Zone* zone)
|
|
{
|
|
CompartmentsInZoneIter comp(zone);
|
|
MOZ_ASSERT(!comp.done());
|
|
return comp.get();
|
|
}
|
|
|
|
void
|
|
JS::ObjectPtr::finalize(JSRuntime* rt)
|
|
{
|
|
if (IsIncrementalBarrierNeeded(rt->contextFromMainThread()))
|
|
IncrementalObjectBarrier(value);
|
|
value = nullptr;
|
|
}
|
|
|
|
void
|
|
JS::ObjectPtr::finalize(JSContext* cx)
|
|
{
|
|
finalize(cx->runtime());
|
|
}
|
|
|
|
void
|
|
JS::ObjectPtr::updateWeakPointerAfterGC()
|
|
{
|
|
if (js::gc::IsAboutToBeFinalizedUnbarriered(value.unsafeGet()))
|
|
value = nullptr;
|
|
}
|
|
|
|
void
|
|
JS::ObjectPtr::trace(JSTracer* trc, const char* name)
|
|
{
|
|
JS::TraceEdge(trc, &value, name);
|
|
}
|
|
|
|
JS_FRIEND_API(JSObject*)
|
|
js::GetTestingFunctions(JSContext* cx)
|
|
{
|
|
RootedObject obj(cx, JS_NewPlainObject(cx));
|
|
if (!obj)
|
|
return nullptr;
|
|
|
|
if (!DefineTestingFunctions(cx, obj, false, false))
|
|
return nullptr;
|
|
|
|
return obj;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
JS_FRIEND_API(unsigned)
|
|
js::GetEnterCompartmentDepth(JSContext* cx)
|
|
{
|
|
return cx->getEnterCompartmentDepth();
|
|
}
|
|
#endif
|
|
|
|
JS_FRIEND_API(void)
|
|
js::SetDOMCallbacks(JSContext* cx, const DOMCallbacks* callbacks)
|
|
{
|
|
cx->DOMcallbacks = callbacks;
|
|
}
|
|
|
|
JS_FRIEND_API(const DOMCallbacks*)
|
|
js::GetDOMCallbacks(JSContext* cx)
|
|
{
|
|
return cx->DOMcallbacks;
|
|
}
|
|
|
|
static const void* gDOMProxyHandlerFamily = nullptr;
|
|
static uint32_t gDOMProxyExpandoSlot = 0;
|
|
static DOMProxyShadowsCheck gDOMProxyShadowsCheck;
|
|
|
|
JS_FRIEND_API(void)
|
|
js::SetDOMProxyInformation(const void* domProxyHandlerFamily, uint32_t domProxyExpandoSlot,
|
|
DOMProxyShadowsCheck domProxyShadowsCheck)
|
|
{
|
|
gDOMProxyHandlerFamily = domProxyHandlerFamily;
|
|
gDOMProxyExpandoSlot = domProxyExpandoSlot;
|
|
gDOMProxyShadowsCheck = domProxyShadowsCheck;
|
|
}
|
|
|
|
const void*
|
|
js::GetDOMProxyHandlerFamily()
|
|
{
|
|
return gDOMProxyHandlerFamily;
|
|
}
|
|
|
|
uint32_t
|
|
js::GetDOMProxyExpandoSlot()
|
|
{
|
|
return gDOMProxyExpandoSlot;
|
|
}
|
|
|
|
DOMProxyShadowsCheck
|
|
js::GetDOMProxyShadowsCheck()
|
|
{
|
|
return gDOMProxyShadowsCheck;
|
|
}
|
|
|
|
bool
|
|
js::detail::IdMatchesAtom(jsid id, JSAtom* atom)
|
|
{
|
|
return id == INTERNED_STRING_TO_JSID(nullptr, atom);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::PrepareScriptEnvironmentAndInvoke(JSContext* cx, HandleObject scope, ScriptEnvironmentPreparer::Closure& closure)
|
|
{
|
|
MOZ_ASSERT(!cx->isExceptionPending());
|
|
|
|
MOZ_RELEASE_ASSERT(cx->runtime()->scriptEnvironmentPreparer,
|
|
"Embedding needs to set a scriptEnvironmentPreparer callback");
|
|
|
|
cx->runtime()->scriptEnvironmentPreparer->invoke(scope, closure);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::SetScriptEnvironmentPreparer(JSContext* cx, ScriptEnvironmentPreparer* preparer)
|
|
{
|
|
cx->scriptEnvironmentPreparer = preparer;
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::SetCTypesActivityCallback(JSContext* cx, CTypesActivityCallback cb)
|
|
{
|
|
cx->ctypesActivityCallback = cb;
|
|
}
|
|
|
|
js::AutoCTypesActivityCallback::AutoCTypesActivityCallback(JSContext* cx,
|
|
js::CTypesActivityType beginType,
|
|
js::CTypesActivityType endType
|
|
MOZ_GUARD_OBJECT_NOTIFIER_PARAM_IN_IMPL)
|
|
: cx(cx), callback(cx->runtime()->ctypesActivityCallback), endType(endType)
|
|
{
|
|
MOZ_GUARD_OBJECT_NOTIFIER_INIT;
|
|
|
|
if (callback)
|
|
callback(cx, beginType);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::SetAllocationMetadataBuilder(JSContext* cx, const AllocationMetadataBuilder *callback)
|
|
{
|
|
cx->compartment()->setAllocationMetadataBuilder(callback);
|
|
}
|
|
|
|
JS_FRIEND_API(JSObject*)
|
|
js::GetAllocationMetadata(JSObject* obj)
|
|
{
|
|
ObjectWeakMap* map = obj->compartment()->objectMetadataTable;
|
|
if (map)
|
|
return map->lookup(obj);
|
|
return nullptr;
|
|
}
|
|
|
|
JS_FRIEND_API(bool)
|
|
js::ReportIsNotFunction(JSContext* cx, HandleValue v)
|
|
{
|
|
return ReportIsNotFunction(cx, v, -1);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::ReportASCIIErrorWithId(JSContext* cx, const char* msg, HandleId id)
|
|
{
|
|
RootedValue idv(cx);
|
|
if (!JS_IdToValue(cx, id, &idv))
|
|
return;
|
|
RootedString idstr(cx, JS::ToString(cx, idv));
|
|
if (!idstr)
|
|
return;
|
|
JSAutoByteString bytes;
|
|
if (!bytes.encodeUtf8(cx, idstr))
|
|
return;
|
|
JS_ReportErrorUTF8(cx, msg, bytes.ptr());
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
bool
|
|
js::HasObjectMovedOp(JSObject* obj) {
|
|
return !!GetObjectClass(obj)->extObjectMovedOp();
|
|
}
|
|
#endif
|
|
|
|
JS_FRIEND_API(bool)
|
|
js::ForwardToNative(JSContext* cx, JSNative native, const CallArgs& args)
|
|
{
|
|
return native(cx, args.length(), args.base());
|
|
}
|
|
|
|
JS_FRIEND_API(JSObject*)
|
|
js::ConvertArgsToArray(JSContext* cx, const CallArgs& args)
|
|
{
|
|
RootedObject argsArray(cx, NewDenseCopiedArray(cx, args.length(), args.array()));
|
|
return argsArray;
|
|
}
|
|
|
|
JS_FRIEND_API(JSAtom*)
|
|
js::GetPropertyNameFromPC(JSScript* script, jsbytecode* pc)
|
|
{
|
|
if (!IsGetPropPC(pc) && !IsSetPropPC(pc))
|
|
return nullptr;
|
|
return script->getName(pc);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::SetWindowProxyClass(JSContext* cx, const js::Class* clasp)
|
|
{
|
|
MOZ_ASSERT(!cx->maybeWindowProxyClass());
|
|
cx->setWindowProxyClass(clasp);
|
|
}
|
|
|
|
JS_FRIEND_API(void)
|
|
js::SetWindowProxy(JSContext* cx, HandleObject global, HandleObject windowProxy)
|
|
{
|
|
AssertHeapIsIdle(cx);
|
|
CHECK_REQUEST(cx);
|
|
|
|
assertSameCompartment(cx, global, windowProxy);
|
|
|
|
MOZ_ASSERT(IsWindowProxy(windowProxy));
|
|
global->as<GlobalObject>().setWindowProxy(windowProxy);
|
|
}
|
|
|
|
JS_FRIEND_API(JSObject*)
|
|
js::ToWindowIfWindowProxy(JSObject* obj)
|
|
{
|
|
if (IsWindowProxy(obj))
|
|
return &obj->global();
|
|
return obj;
|
|
}
|
|
|
|
JS_FRIEND_API(JSObject*)
|
|
js::ToWindowProxyIfWindow(JSObject* obj)
|
|
{
|
|
if (IsWindow(obj))
|
|
return obj->as<GlobalObject>().windowProxy();
|
|
return obj;
|
|
}
|
|
|
|
JS_FRIEND_API(bool)
|
|
js::IsWindowProxy(JSObject* obj)
|
|
{
|
|
// Note: simply checking `obj == obj->global().windowProxy()` is not
|
|
// sufficient: we may have transplanted the window proxy with a CCW.
|
|
// Check the Class to ensure we really have a window proxy.
|
|
return obj->getClass() == obj->runtimeFromAnyThread()->maybeWindowProxyClass();
|
|
}
|
|
|
|
JS_FRIEND_API(bool)
|
|
js::detail::IsWindowSlow(JSObject* obj)
|
|
{
|
|
return obj->as<GlobalObject>().maybeWindowProxy();
|
|
}
|