Source/JavaScriptCore/runtime/JSGlobalObject.cpp

   1 /*
   2  * Copyright (C) 2007-2017 Apple Inc. All rights reserved.
   3  * Copyright (C) 2008 Cameron Zwarich (cwzwarich@uwaterloo.ca)
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1.  Redistributions of source code must retain the above copyright
  10  *     notice, this list of conditions and the following disclaimer.
  11  * 2.  Redistributions in binary form must reproduce the above copyright
  12  *     notice, this list of conditions and the following disclaimer in the
  13  *     documentation and/or other materials provided with the distribution.
  14  * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
  15  *     its contributors may be used to endorse or promote products derived
  16  *     from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  19  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  21  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  25  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include "config.h"
  31 #include "JSGlobalObject.h"
  32
  33 #include "ArrayConstructor.h"
  34 #include "ArrayIteratorPrototype.h"
  35 #include "ArrayPrototype.h"
  36 #include "AsyncFromSyncIteratorPrototype.h"
  37 #include "AtomicsObject.h"
  38 #include "AsyncFunctionConstructor.h"
  39 #include "AsyncFunctionPrototype.h"
  40 #include "AsyncGeneratorFunctionConstructor.h"
  41 #include "AsyncGeneratorFunctionPrototype.h"
  42 #include "AsyncGeneratorPrototype.h"
  43 #include "AsyncIteratorPrototype.h"
  44 #include "BooleanConstructor.h"
  45 #include "BooleanPrototype.h"
  46 #include "BuiltinNames.h"
  47 #include "CatchScope.h"
  48 #include "ClonedArguments.h"
  49 #include "CodeBlock.h"
  50 #include "CodeCache.h"
  51 #include "ConsoleObject.h"
  52 #include "DateConstructor.h"
  53 #include "DatePrototype.h"
  54 #include "Debugger.h"
  55 #include "DebuggerScope.h"
  56 #include "DirectArguments.h"
  57 #include "DirectEvalExecutable.h"
  58 #include "ECMAScriptSpecInternalFunctions.h"
  59 #include "Error.h"
  60 #include "ErrorConstructor.h"
  61 #include "ErrorPrototype.h"
  62 #include "FunctionConstructor.h"
  63 #include "FunctionPrototype.h"
  64 #include "GeneratorFunctionConstructor.h"
  65 #include "GeneratorFunctionPrototype.h"
  66 #include "GeneratorPrototype.h"
  67 #include "GetterSetter.h"
  68 #include "HeapIterationScope.h"
  69 #include "IndirectEvalExecutable.h"
  70 #include "InspectorInstrumentationObject.h"
  71 #include "Interpreter.h"
  72 #include "IteratorPrototype.h"
  73 #include "JSAPIWrapperObject.h"
  74 #include "JSArrayBuffer.h"
  75 #include "JSArrayBufferConstructor.h"
  76 #include "JSArrayBufferPrototype.h"
  77 #include "JSAsyncFunction.h"
  78 #include "JSAsyncGeneratorFunction.h"
  79 #include "JSBoundFunction.h"
  80 #include "JSCInlines.h"
  81 #include "JSCallbackConstructor.h"
  82 #include "JSCallbackFunction.h"
  83 #include "JSCallbackObject.h"
  84 #include "JSCustomGetterSetterFunction.h"
  85 #include "JSDataView.h"
  86 #include "JSDataViewPrototype.h"
  87 #include "JSDollarVM.h"
  88 #include "JSDollarVMPrototype.h"
  89 #include "JSFunction.h"
  90 #include "JSGeneratorFunction.h"
  91 #include "JSGenericTypedArrayViewConstructorInlines.h"
  92 #include "JSGenericTypedArrayViewInlines.h"
  93 #include "JSGenericTypedArrayViewPrototypeInlines.h"
  94 #include "JSGlobalObjectFunctions.h"
  95 #include "JSInternalPromise.h"
  96 #include "JSInternalPromiseConstructor.h"
  97 #include "JSInternalPromisePrototype.h"
  98 #include "JSJob.h"
  99 #include "JSLexicalEnvironment.h"
 100 #include "JSLock.h"
 101 #include "JSMap.h"
 102 #include "JSModuleEnvironment.h"
 103 #include "JSModuleLoader.h"
 104 #include "JSModuleNamespaceObject.h"
 105 #include "JSModuleRecord.h"
 106 #include "JSNativeStdFunction.h"
 107 #include "JSONObject.h"
 108 #include "JSPromise.h"
 109 #include "JSPromiseConstructor.h"
 110 #include "JSPromisePrototype.h"
 111 #include "JSSet.h"
 112 #include "JSStringIterator.h"
 113 #include "JSTemplateRegistryKey.h"
 114 #include "JSTypedArrayConstructors.h"
 115 #include "JSTypedArrayPrototypes.h"
 116 #include "JSTypedArrayViewConstructor.h"
 117 #include "JSTypedArrayViewPrototype.h"
 118 #include "JSTypedArrays.h"
 119 #include "JSWeakMap.h"
 120 #include "JSWeakSet.h"
 121 #include "JSWebAssembly.h"
 122 #include "JSWithScope.h"
 123 #include "LazyClassStructureInlines.h"
 124 #include "LazyPropertyInlines.h"
 125 #include "Lookup.h"
 126 #include "MapConstructor.h"
 127 #include "MapIteratorPrototype.h"
 128 #include "MapPrototype.h"
 129 #include "MarkedSpaceInlines.h"
 130 #include "MathObject.h"
 131 #include "Microtask.h"
 132 #include "ModuleLoaderPrototype.h"
 133 #include "NativeErrorConstructor.h"
 134 #include "NativeErrorPrototype.h"
 135 #include "NullGetterFunction.h"
 136 #include "NullSetterFunction.h"
 137 #include "NumberConstructor.h"
 138 #include "NumberPrototype.h"
 139 #include "ObjCCallbackFunction.h"
 140 #include "ObjectConstructor.h"
 141 #include "ObjectPropertyChangeAdaptiveWatchpoint.h"
 142 #include "ObjectPropertyConditionSet.h"
 143 #include "ObjectPrototype.h"
 144 #include "ParserError.h"
 145 #include "ProxyConstructor.h"
 146 #include "ProxyObject.h"
 147 #include "ProxyRevoke.h"
 148 #include "ReflectObject.h"
 149 #include "RegExpConstructor.h"
 150 #include "RegExpMatchesArray.h"
 151 #include "RegExpObject.h"
 152 #include "RegExpPrototype.h"
 153 #include "ScopedArguments.h"
 154 #include "SetConstructor.h"
 155 #include "SetIteratorPrototype.h"
 156 #include "SetPrototype.h"
 157 #include "StrictEvalActivation.h"
 158 #include "StringConstructor.h"
 159 #include "StringIteratorPrototype.h"
 160 #include "StringPrototype.h"
 161 #include "Symbol.h"
 162 #include "SymbolConstructor.h"
 163 #include "SymbolObject.h"
 164 #include "SymbolPrototype.h"
 165 #include "VariableWriteFireDetail.h"
 166 #include "WeakGCMapInlines.h"
 167 #include "WeakMapConstructor.h"
 168 #include "WeakMapPrototype.h"
 169 #include "WeakSetConstructor.h"
 170 #include "WeakSetPrototype.h"
 171 #include "WebAssemblyToJSCallee.h"
 172 #include <wtf/RandomNumber.h>
 173
 174 #if ENABLE(INTL)
 175 #include "IntlObject.h"
 176 #include <unicode/ucol.h>
 177 #include <unicode/udat.h>
 178 #include <unicode/unum.h>
 179 #endif // ENABLE(INTL)
 180
 181 #if ENABLE(REMOTE_INSPECTOR)
 182 #include "JSGlobalObjectDebuggable.h"
 183 #include "JSGlobalObjectInspectorController.h"
 184 #endif
 185
 186 namespace JSC {
 187
 188 static JSValue createProxyProperty(VM& vm, JSObject* object)
 189 {
 190     JSGlobalObject* global = jsCast<JSGlobalObject*>(object);
 191     return ProxyConstructor::create(vm, ProxyConstructor::createStructure(vm, global, global->functionPrototype()));
 192 }
 193
 194 static JSValue createJSONProperty(VM& vm, JSObject* object)
 195 {
 196     JSGlobalObject* global = jsCast<JSGlobalObject*>(object);
 197     return JSONObject::create(vm, JSONObject::createStructure(vm, global, global->objectPrototype()));
 198 }
 199
 200 static JSValue createMathProperty(VM& vm, JSObject* object)
 201 {
 202     JSGlobalObject* global = jsCast<JSGlobalObject*>(object);
 203     return MathObject::create(vm, global, MathObject::createStructure(vm, global, global->objectPrototype()));
 204 }
 205
 206 static JSValue createConsoleProperty(VM& vm, JSObject* object)
 207 {
 208     JSGlobalObject* global = jsCast<JSGlobalObject*>(object);
 209     return ConsoleObject::create(vm, global, ConsoleObject::createStructure(vm, global, constructEmptyObject(global->globalExec())));
 210 }
 211
 212 static JSValue createAtomicsProperty(VM& vm, JSObject* object)
 213 {
 214     JSGlobalObject* global = jsCast<JSGlobalObject*>(object);
 215     return AtomicsObject::create(vm, global, AtomicsObject::createStructure(vm, global, global->objectPrototype()));
 216 }
 217
 218 static EncodedJSValue JSC_HOST_CALL makeBoundFunction(ExecState* exec)
 219 {
 220     VM& vm = exec->vm();
 221     JSGlobalObject* globalObject = exec->lexicalGlobalObject();
 222
 223     JSObject* target = asObject(exec->uncheckedArgument(0));
 224     JSValue boundThis = exec->uncheckedArgument(1);
 225     JSValue boundArgs = exec->uncheckedArgument(2);
 226     JSValue length = exec->uncheckedArgument(3);
 227     JSString* name = asString(exec->uncheckedArgument(4));
 228
 229     return JSValue::encode(JSBoundFunction::create(
 230         vm, exec, globalObject, target, boundThis, boundArgs.isCell() ? jsCast<JSArray*>(boundArgs) : nullptr, length.asInt32(), name->value(exec)));
 231 }
 232
 233 static EncodedJSValue JSC_HOST_CALL hasOwnLengthProperty(ExecState* exec)
 234 {
 235     VM& vm = exec->vm();
 236     JSObject* target = asObject(exec->uncheckedArgument(0));
 237     return JSValue::encode(jsBoolean(target->hasOwnProperty(exec, vm.propertyNames->length)));
 238 }
 239
 240 } // namespace JSC
 241
 242 #include "JSGlobalObject.lut.h"
 243
 244 namespace JSC {
 245
 246 const ClassInfo JSGlobalObject::s_info = { "GlobalObject", &Base::s_info, &globalObjectTable, nullptr, CREATE_METHOD_TABLE(JSGlobalObject) };
 247
 248 const GlobalObjectMethodTable JSGlobalObject::s_globalObjectMethodTable = {
 249     &supportsRichSourceInfo,
 250     &shouldInterruptScript,
 251     &javaScriptRuntimeFlags,
 252     nullptr, // queueTaskToEventLoop
 253     &shouldInterruptScriptBeforeTimeout,
 254     nullptr, // moduleLoaderImportModule
 255     nullptr, // moduleLoaderResolve
 256     nullptr, // moduleLoaderFetch
 257     nullptr, // moduleLoaderInstantiate
 258     nullptr, // moduleLoaderEvaluate
 259     nullptr, // promiseRejectionTracker
 260     nullptr, // defaultLanguage
 261 };
 262
 263 /* Source for JSGlobalObject.lut.h
 264 @begin globalObjectTable
 265   isNaN                 JSBuiltin                                    DontEnum|Function 1
 266   isFinite              JSBuiltin                                    DontEnum|Function 1
 267   escape                globalFuncEscape                             DontEnum|Function 1
 268   unescape              globalFuncUnescape                           DontEnum|Function 1
 269   decodeURI             globalFuncDecodeURI                          DontEnum|Function 1
 270   decodeURIComponent    globalFuncDecodeURIComponent                 DontEnum|Function 1
 271   encodeURI             globalFuncEncodeURI                          DontEnum|Function 1
 272   encodeURIComponent    globalFuncEncodeURIComponent                 DontEnum|Function 1
 273   EvalError             JSGlobalObject::m_evalErrorConstructor       DontEnum|CellProperty
 274   ReferenceError        JSGlobalObject::m_referenceErrorConstructor  DontEnum|CellProperty
 275   SyntaxError           JSGlobalObject::m_syntaxErrorConstructor     DontEnum|CellProperty
 276   URIError              JSGlobalObject::m_URIErrorConstructor        DontEnum|CellProperty
 277   Proxy                 createProxyProperty                          DontEnum|PropertyCallback
 278   JSON                  createJSONProperty                           DontEnum|PropertyCallback
 279   Math                  createMathProperty                           DontEnum|PropertyCallback
 280   Atomics               createAtomicsProperty                        DontEnum|PropertyCallback
 281   console               createConsoleProperty                        DontEnum|PropertyCallback
 282   Int8Array             JSGlobalObject::m_typedArrayInt8             DontEnum|ClassStructure
 283   Int16Array            JSGlobalObject::m_typedArrayInt16            DontEnum|ClassStructure
 284   Int32Array            JSGlobalObject::m_typedArrayInt32            DontEnum|ClassStructure
 285   Uint8Array            JSGlobalObject::m_typedArrayUint8            DontEnum|ClassStructure
 286   Uint8ClampedArray     JSGlobalObject::m_typedArrayUint8Clamped     DontEnum|ClassStructure
 287   Uint16Array           JSGlobalObject::m_typedArrayUint16           DontEnum|ClassStructure
 288   Uint32Array           JSGlobalObject::m_typedArrayUint32           DontEnum|ClassStructure
 289   Float32Array          JSGlobalObject::m_typedArrayFloat32          DontEnum|ClassStructure
 290   Float64Array          JSGlobalObject::m_typedArrayFloat64          DontEnum|ClassStructure
 291   DataView              JSGlobalObject::m_typedArrayDataView         DontEnum|ClassStructure
 292   Date                  JSGlobalObject::m_dateStructure              DontEnum|ClassStructure
 293   Boolean               JSGlobalObject::m_booleanObjectStructure     DontEnum|ClassStructure
 294   Number                JSGlobalObject::m_numberObjectStructure      DontEnum|ClassStructure
 295   WeakMap               JSGlobalObject::m_weakMapStructure           DontEnum|ClassStructure
 296   WeakSet               JSGlobalObject::m_weakSetStructure           DontEnum|ClassStructure
 297 @end
 298 */
 299
 300 static EncodedJSValue JSC_HOST_CALL enqueueJob(ExecState* exec)
 301 {
 302     VM& vm = exec->vm();
 303     JSGlobalObject* globalObject = exec->lexicalGlobalObject();
 304
 305     JSValue job = exec->argument(0);
 306     JSValue arguments = exec->argument(1);
 307     ASSERT(arguments.inherits(vm, JSArray::info()));
 308
 309     globalObject->queueMicrotask(createJSJob(vm, job, jsCast<JSArray*>(arguments)));
 310
 311     return JSValue::encode(jsUndefined());
 312 }
 313
 314 JSGlobalObject::JSGlobalObject(VM& vm, Structure* structure, const GlobalObjectMethodTable* globalObjectMethodTable)
 315     : Base(vm, structure, 0)
 316     , m_vm(vm)
 317     , m_masqueradesAsUndefinedWatchpoint(adoptRef(new WatchpointSet(IsWatched)))
 318     , m_havingABadTimeWatchpoint(adoptRef(new WatchpointSet(IsWatched)))
 319     , m_varInjectionWatchpoint(adoptRef(new WatchpointSet(IsWatched)))
 320     , m_weakRandom(Options::forceWeakRandomSeed() ? Options::forcedWeakRandomSeed() : static_cast<unsigned>(randomNumber() * (std::numeric_limits<unsigned>::max() + 1.0)))
 321     , m_arrayIteratorProtocolWatchpoint(IsWatched)
 322     , m_mapIteratorProtocolWatchpoint(IsWatched)
 323     , m_setIteratorProtocolWatchpoint(IsWatched)
 324     , m_stringIteratorProtocolWatchpoint(IsWatched)
 325     , m_mapSetWatchpoint(IsWatched)
 326     , m_setAddWatchpoint(IsWatched)
 327     , m_arraySpeciesWatchpoint(ClearWatchpoint)
 328     , m_templateRegistry(vm)
 329     , m_runtimeFlags()
 330     , m_globalObjectMethodTable(globalObjectMethodTable ? globalObjectMethodTable : &s_globalObjectMethodTable)
 331 {
 332 }
 333
 334 JSGlobalObject::~JSGlobalObject()
 335 {
 336 #if ENABLE(REMOTE_INSPECTOR)
 337     m_inspectorController->globalObjectDestroyed();
 338 #endif
 339
 340     if (m_debugger)
 341         m_debugger->detach(this, Debugger::GlobalObjectIsDestructing);
 342 }
 343
 344 void JSGlobalObject::destroy(JSCell* cell)
 345 {
 346     static_cast<JSGlobalObject*>(cell)->JSGlobalObject::~JSGlobalObject();
 347 }
 348
 349 void JSGlobalObject::setGlobalThis(VM& vm, JSObject* globalThis)
 350 {
 351     m_globalThis.set(vm, this, globalThis);
 352 }
 353
 354 static JSObject* getGetterById(ExecState* exec, JSObject* base, const Identifier& ident)
 355 {
 356     JSValue baseValue = JSValue(base);
 357     PropertySlot slot(baseValue, PropertySlot::InternalMethodType::VMInquiry);
 358     baseValue.getPropertySlot(exec, ident, slot);
 359     return slot.getPureResult().toObject(exec);
 360 }
 361
 362 void JSGlobalObject::init(VM& vm)
 363 {
 364     ASSERT(vm.currentThreadIsHoldingAPILock());
 365     auto catchScope = DECLARE_CATCH_SCOPE(vm);
 366
 367     Base::setStructure(vm, Structure::toCacheableDictionaryTransition(vm, structure()));
 368
 369     m_debugger = 0;
 370
 371 #if ENABLE(REMOTE_INSPECTOR)
 372     m_inspectorController = std::make_unique<Inspector::JSGlobalObjectInspectorController>(*this);
 373     m_inspectorDebuggable = std::make_unique<JSGlobalObjectDebuggable>(*this);
 374     m_inspectorDebuggable->init();
 375     m_consoleClient = m_inspectorController->consoleClient();
 376 #endif
 377
 378     m_functionPrototype.set(vm, this, FunctionPrototype::create(vm, FunctionPrototype::createStructure(vm, this, jsNull()))); // The real prototype will be set once ObjectPrototype is created.
 379     m_calleeStructure.set(vm, this, JSCallee::createStructure(vm, this, jsNull()));
 380
 381     m_globalLexicalEnvironment.set(vm, this, JSGlobalLexicalEnvironment::create(vm, JSGlobalLexicalEnvironment::createStructure(vm, this), this));
 382     // Need to create the callee structure (above) before creating the callee.
 383     JSCallee* globalCallee = JSCallee::create(vm, this, globalScope());
 384     m_globalCallee.set(vm, this, globalCallee);
 385
 386     ExecState::initGlobalExec(JSGlobalObject::globalExec(), globalCallee);
 387     ExecState* exec = JSGlobalObject::globalExec();
 388
 389     m_functionStructure.set(vm, this, JSFunction::createStructure(vm, this, m_functionPrototype.get()));
 390     m_customGetterSetterFunctionStructure.initLater(
 391         [] (const Initializer<Structure>& init) {
 392             init.set(JSCustomGetterSetterFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
 393         });
 394     m_boundFunctionStructure.initLater(
 395         [] (const Initializer<Structure>& init) {
 396             init.set(JSBoundFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
 397         });
 398     m_getterSetterStructure.set(vm, this, GetterSetter::createStructure(vm, this, jsNull()));
 399     m_nativeStdFunctionStructure.initLater(
 400         [] (const Initializer<Structure>& init) {
 401             init.set(JSNativeStdFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
 402         });
 403     m_namedFunctionStructure.initLater(
 404         [] (const Initializer<Structure>& init) {
 405             init.set(Structure::addPropertyTransition(init.vm, init.owner->m_functionStructure.get(), init.vm.propertyNames->name, DontDelete | ReadOnly | DontEnum, init.owner->m_functionNameOffset));
 406         });
 407     JSFunction* callFunction = nullptr;
 408     JSFunction* applyFunction = nullptr;
 409     JSFunction* hasInstanceSymbolFunction = nullptr;
 410     m_functionPrototype->addFunctionProperties(exec, this, &callFunction, &applyFunction, &hasInstanceSymbolFunction);
 411     m_callFunction.set(vm, this, callFunction);
 412     m_applyFunction.set(vm, this, applyFunction);
 413     m_arrayProtoToStringFunction.initLater(
 414         [] (const Initializer<JSFunction>& init) {
 415             init.set(JSFunction::create(init.vm, init.owner, 0, init.vm.propertyNames->toString.string(), arrayProtoFuncToString, NoIntrinsic));
 416         });
 417     m_arrayProtoValuesFunction.initLater(
 418         [] (const Initializer<JSFunction>& init) {
 419             init.set(JSFunction::create(init.vm, arrayPrototypeValuesCodeGenerator(init.vm), init.owner));
 420         });
 421     m_initializePromiseFunction.initLater(
 422         [] (const Initializer<JSFunction>& init) {
 423             init.set(JSFunction::create(init.vm, promiseOperationsInitializePromiseCodeGenerator(init.vm), init.owner));
 424         });
 425
 426     m_iteratorProtocolFunction.initLater(
 427         [] (const Initializer<JSFunction>& init) {
 428             init.set(JSFunction::create(init.vm, iteratorHelpersPerformIterationCodeGenerator(init.vm), init.owner));
 429         });
 430
 431     m_promiseResolveFunction.initLater(
 432         [] (const Initializer<JSFunction>& init) {
 433             init.set(JSFunction::create(init.vm, promiseConstructorResolveCodeGenerator(init.vm), init.owner));
 434         });
 435
 436     m_newPromiseCapabilityFunction.set(vm, this, JSFunction::create(vm, promiseOperationsNewPromiseCapabilityCodeGenerator(vm), this));
 437     m_functionProtoHasInstanceSymbolFunction.set(vm, this, hasInstanceSymbolFunction);
 438     m_throwTypeErrorGetterSetter.initLater(
 439         [] (const Initializer<GetterSetter>& init) {
 440             JSFunction* thrower = init.owner->throwTypeErrorFunction();
 441             GetterSetter* getterSetter = GetterSetter::create(init.vm, init.owner);
 442             getterSetter->setGetter(init.vm, init.owner, thrower);
 443             getterSetter->setSetter(init.vm, init.owner, thrower);
 444             init.set(getterSetter);
 445         });
 446
 447     m_nullGetterFunction.set(vm, this, NullGetterFunction::create(vm, NullGetterFunction::createStructure(vm, this, m_functionPrototype.get())));
 448     m_nullSetterFunction.set(vm, this, NullSetterFunction::create(vm, NullSetterFunction::createStructure(vm, this, m_functionPrototype.get())));
 449     m_objectPrototype.set(vm, this, ObjectPrototype::create(vm, this, ObjectPrototype::createStructure(vm, this, jsNull())));
 450     GetterSetter* protoAccessor = GetterSetter::create(vm, this);
 451     protoAccessor->setGetter(vm, this, JSFunction::create(vm, this, 0, makeString("get ", vm.propertyNames->underscoreProto.string()), globalFuncProtoGetter));
 452     protoAccessor->setSetter(vm, this, JSFunction::create(vm, this, 0, makeString("set ", vm.propertyNames->underscoreProto.string()), globalFuncProtoSetter));
 453     m_objectPrototype->putDirectNonIndexAccessor(vm, vm.propertyNames->underscoreProto, protoAccessor, Accessor | DontEnum);
 454     m_functionPrototype->structure()->setPrototypeWithoutTransition(vm, m_objectPrototype.get());
 455     m_objectStructureForObjectConstructor.set(vm, this, vm.prototypeMap.emptyObjectStructureForPrototype(this, m_objectPrototype.get(), JSFinalObject::defaultInlineCapacity()));
 456     m_objectProtoValueOfFunction.set(vm, this, jsCast<JSFunction*>(objectPrototype()->getDirect(vm, vm.propertyNames->valueOf)));
 457
 458     JSFunction* thrower = JSFunction::create(vm, this, 0, String(), globalFuncThrowTypeErrorArgumentsCalleeAndCaller);
 459     GetterSetter* getterSetter = GetterSetter::create(vm, this);
 460     getterSetter->setGetter(vm, this, thrower);
 461     getterSetter->setSetter(vm, this, thrower);
 462     m_throwTypeErrorArgumentsCalleeAndCallerGetterSetter.set(vm, this, getterSetter);
 463
 464     m_functionPrototype->initRestrictedProperties(exec, this);
 465
 466     m_speciesGetterSetter.set(vm, this, GetterSetter::create(vm, this));
 467     m_speciesGetterSetter->setGetter(vm, this, JSFunction::create(vm, globalOperationsSpeciesGetterCodeGenerator(vm), this));
 468
 469     m_typedArrayProto.initLater(
 470         [] (const Initializer<JSTypedArrayViewPrototype>& init) {
 471             init.set(JSTypedArrayViewPrototype::create(init.vm, init.owner, JSTypedArrayViewPrototype::createStructure(init.vm, init.owner, init.owner->m_objectPrototype.get())));
 472
 473             // Make sure that the constructor gets initialized, too.
 474             init.owner->m_typedArraySuperConstructor.get(init.owner);
 475         });
 476     m_typedArraySuperConstructor.initLater(
 477         [] (const Initializer<JSTypedArrayViewConstructor>& init) {
 478             JSTypedArrayViewPrototype* prototype = init.owner->m_typedArrayProto.get(init.owner);
 479             JSTypedArrayViewConstructor* constructor = JSTypedArrayViewConstructor::create(init.vm, init.owner, JSTypedArrayViewConstructor::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()), prototype, init.owner->m_speciesGetterSetter.get());
 480             prototype->putDirectWithoutTransition(init.vm, init.vm.propertyNames->constructor, constructor, DontEnum);
 481             init.set(constructor);
 482         });
 483
 484 #define INIT_TYPED_ARRAY_LATER(type) \
 485     m_typedArray ## type.initLater( \
 486         [] (LazyClassStructure::Initializer& init) { \
 487             init.setPrototype(JS ## type ## ArrayPrototype::create(init.vm, init.global, JS ## type ## ArrayPrototype::createStructure(init.vm, init.global, init.global->m_typedArrayProto.get(init.global)))); \
 488             init.setStructure(JS ## type ## Array::createStructure(init.vm, init.global, init.prototype)); \
 489             init.setConstructor(JS ## type ## ArrayConstructor::create(init.vm, init.global, JS ## type ## ArrayConstructor::createStructure(init.vm, init.global, init.global->m_typedArraySuperConstructor.get(init.global)), init.prototype, ASCIILiteral(#type "Array"), typedArrayConstructorAllocate ## type ## ArrayCodeGenerator(init.vm))); \
 490             init.global->putDirectWithoutTransition(init.vm, init.vm.propertyNames->builtinNames().type ## ArrayPrivateName(), init.constructor, DontEnum); \
 491         });
 492     FOR_EACH_TYPED_ARRAY_TYPE_EXCLUDING_DATA_VIEW(INIT_TYPED_ARRAY_LATER)
 493 #undef INIT_TYPED_ARRAY_LATER
 494
 495     m_typedArrayDataView.initLater(
 496         [] (LazyClassStructure::Initializer& init) {
 497             init.setPrototype(JSDataViewPrototype::create(init.vm, JSDataViewPrototype::createStructure(init.vm, init.global, init.global->m_objectPrototype.get())));
 498             init.setStructure(JSDataView::createStructure(init.vm, init.global, init.prototype));
 499             init.setConstructor(JSDataViewConstructor::create(init.vm, init.global, JSDataViewConstructor::createStructure(init.vm, init.global, init.global->m_functionPrototype.get()), init.prototype, ASCIILiteral("DataView"), nullptr));
 500         });
 501
 502     m_lexicalEnvironmentStructure.set(vm, this, JSLexicalEnvironment::createStructure(vm, this));
 503     m_moduleEnvironmentStructure.initLater(
 504         [] (const Initializer<Structure>& init) {
 505             init.set(JSModuleEnvironment::createStructure(init.vm, init.owner));
 506         });
 507     m_strictEvalActivationStructure.set(vm, this, StrictEvalActivation::createStructure(vm, this, jsNull()));
 508     m_debuggerScopeStructure.initLater(
 509         [] (const Initializer<Structure>& init) {
 510             init.set(DebuggerScope::createStructure(init.vm, init.owner));
 511         });
 512     m_withScopeStructure.initLater(
 513         [] (const Initializer<Structure>& init) {
 514             init.set(JSWithScope::createStructure(init.vm, init.owner, jsNull()));
 515         });
 516
 517     m_nullPrototypeObjectStructure.initLater(
 518         [] (const Initializer<Structure>& init) {
 519             init.set(JSFinalObject::createStructure(init.vm, init.owner, jsNull(), JSFinalObject::defaultInlineCapacity()));
 520         });
 521
 522     m_callbackFunctionStructure.initLater(
 523         [] (const Initializer<Structure>& init) {
 524             init.set(JSCallbackFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
 525         });
 526     m_directArgumentsStructure.set(vm, this, DirectArguments::createStructure(vm, this, m_objectPrototype.get()));
 527     m_scopedArgumentsStructure.set(vm, this, ScopedArguments::createStructure(vm, this, m_objectPrototype.get()));
 528     m_clonedArgumentsStructure.set(vm, this, ClonedArguments::createStructure(vm, this, m_objectPrototype.get()));
 529     m_callbackConstructorStructure.initLater(
 530         [] (const Initializer<Structure>& init) {
 531             init.set(JSCallbackConstructor::createStructure(init.vm, init.owner, init.owner->m_objectPrototype.get()));
 532         });
 533     m_callbackObjectStructure.initLater(
 534         [] (const Initializer<Structure>& init) {
 535             init.set(JSCallbackObject<JSDestructibleObject>::createStructure(init.vm, init.owner, init.owner->m_objectPrototype.get()));
 536         });
 537
 538 #if JSC_OBJC_API_ENABLED
 539     m_objcCallbackFunctionStructure.initLater(
 540         [] (const Initializer<Structure>& init) {
 541             init.set(ObjCCallbackFunction::createStructure(init.vm, init.owner, init.owner->m_functionPrototype.get()));
 542         });
 543     m_objcWrapperObjectStructure.initLater(
 544         [] (const Initializer<Structure>& init) {
 545             init.set(JSCallbackObject<JSAPIWrapperObject>::createStructure(init.vm, init.owner, init.owner->m_objectPrototype.get()));
 546         });
 547 #endif
 548
 549     m_arrayPrototype.set(vm, this, ArrayPrototype::create(vm, this, ArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
 550
 551     m_originalArrayStructureForIndexingShape[UndecidedShape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithUndecided));
 552     m_originalArrayStructureForIndexingShape[Int32Shape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithInt32));
 553     m_originalArrayStructureForIndexingShape[DoubleShape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithDouble));
 554     m_originalArrayStructureForIndexingShape[ContiguousShape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithContiguous));
 555     m_originalArrayStructureForIndexingShape[ArrayStorageShape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithArrayStorage));
 556     m_originalArrayStructureForIndexingShape[SlowPutArrayStorageShape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithSlowPutArrayStorage));
 557     for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
 558         m_arrayStructureForIndexingShapeDuringAllocation[i] = m_originalArrayStructureForIndexingShape[i];
 559
 560     m_regExpPrototype.set(vm, this, RegExpPrototype::create(vm, this, RegExpPrototype::createStructure(vm, this, m_objectPrototype.get())));
 561     m_regExpStructure.set(vm, this, RegExpObject::createStructure(vm, this, m_regExpPrototype.get()));
 562     m_regExpMatchesArrayStructure.set(vm, this, createRegExpMatchesArrayStructure(vm, this));
 563
 564     m_moduleRecordStructure.set(vm, this, JSModuleRecord::createStructure(vm, this, m_objectPrototype.get()));
 565     m_moduleNamespaceObjectStructure.set(vm, this, JSModuleNamespaceObject::createStructure(vm, this, jsNull()));
 566     {
 567         bool isCallable = false;
 568         m_proxyObjectStructure.set(vm, this, ProxyObject::createStructure(vm, this, jsNull(), isCallable));
 569         isCallable = true;
 570         m_callableProxyObjectStructure.set(vm, this, ProxyObject::createStructure(vm, this, jsNull(), isCallable));
 571     }
 572     m_proxyRevokeStructure.set(vm, this, ProxyRevoke::createStructure(vm, this, m_functionPrototype.get()));
 573
 574     m_parseIntFunction.set(vm, this, JSFunction::create(vm, this, 2, vm.propertyNames->parseInt.string(), globalFuncParseInt, ParseIntIntrinsic));
 575     putDirectWithoutTransition(vm, vm.propertyNames->parseInt, m_parseIntFunction.get(), DontEnum);
 576     m_parseFloatFunction.set(vm, this, JSFunction::create(vm, this, 1, vm.propertyNames->parseFloat.string(), globalFuncParseFloat, NoIntrinsic));
 577     putDirectWithoutTransition(vm, vm.propertyNames->parseFloat, m_parseFloatFunction.get(), DontEnum);
 578
 579     m_arrayBufferPrototype.set(vm, this, JSArrayBufferPrototype::create(vm, this, JSArrayBufferPrototype::createStructure(vm, this, m_objectPrototype.get()), ArrayBufferSharingMode::Default));
 580     m_arrayBufferStructure.set(vm, this, JSArrayBuffer::createStructure(vm, this, m_arrayBufferPrototype.get()));
 581     m_sharedArrayBufferPrototype.set(vm, this, JSArrayBufferPrototype::create(vm, this, JSArrayBufferPrototype::createStructure(vm, this, m_objectPrototype.get()), ArrayBufferSharingMode::Shared));
 582     m_sharedArrayBufferStructure.set(vm, this, JSArrayBuffer::createStructure(vm, this, m_sharedArrayBufferPrototype.get()));
 583
 584     m_iteratorPrototype.set(vm, this, IteratorPrototype::create(vm, this, IteratorPrototype::createStructure(vm, this, m_objectPrototype.get())));
 585     m_asyncIteratorPrototype.set(vm, this, AsyncIteratorPrototype::create(vm, this, AsyncIteratorPrototype::createStructure(vm, this, m_objectPrototype.get())));
 586
 587     m_generatorPrototype.set(vm, this, GeneratorPrototype::create(vm, this, GeneratorPrototype::createStructure(vm, this, m_iteratorPrototype.get())));
 588     m_asyncGeneratorPrototype.set(vm, this, AsyncGeneratorPrototype::create(vm, this, AsyncGeneratorPrototype::createStructure(vm, this, m_asyncIteratorPrototype.get())));
 589
 590 #define CREATE_PROTOTYPE_FOR_SIMPLE_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase) \
 591 m_ ## lowerName ## Prototype.set(vm, this, capitalName##Prototype::create(vm, this, capitalName##Prototype::createStructure(vm, this, m_ ## prototypeBase ## Prototype.get()))); \
 592 m_ ## properName ## Structure.set(vm, this, instanceType::createStructure(vm, this, m_ ## lowerName ## Prototype.get()));
 593
 594     FOR_EACH_SIMPLE_BUILTIN_TYPE(CREATE_PROTOTYPE_FOR_SIMPLE_TYPE)
 595     FOR_EACH_BUILTIN_DERIVED_ITERATOR_TYPE(CREATE_PROTOTYPE_FOR_SIMPLE_TYPE)
 596
 597 #undef CREATE_PROTOTYPE_FOR_SIMPLE_TYPE
 598
 599 #define CREATE_PROTOTYPE_FOR_LAZY_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase) \
 600     m_ ## properName ## Structure.initLater(\
 601         [] (LazyClassStructure::Initializer& init) { \
 602             init.setPrototype(capitalName##Prototype::create(init.vm, init.global, capitalName##Prototype::createStructure(init.vm, init.global, init.global->m_ ## prototypeBase ## Prototype.get()))); \
 603             init.setStructure(instanceType::createStructure(init.vm, init.global, init.prototype)); \
 604             init.setConstructor(capitalName ## Constructor::create(init.vm, capitalName ## Constructor::createStructure(init.vm, init.global, init.global->m_functionPrototype.get()), jsCast<capitalName ## Prototype*>(init.prototype), init.global->m_speciesGetterSetter.get())); \
 605         });
 606
 607     FOR_EACH_LAZY_BUILTIN_TYPE(CREATE_PROTOTYPE_FOR_LAZY_TYPE)
 608
 609 #undef CREATE_PROTOTYPE_FOR_LAZY_TYPE
 610
 611     m_moduleLoaderPrototype.set(vm, this, ModuleLoaderPrototype::create(vm, this, ModuleLoaderPrototype::createStructure(vm, this, m_objectPrototype.get())));
 612
 613     // Constructors
 614
 615     ObjectConstructor* objectConstructor = ObjectConstructor::create(vm, this, ObjectConstructor::createStructure(vm, this, m_functionPrototype.get()), m_objectPrototype.get());
 616     m_objectConstructor.set(vm, this, objectConstructor);
 617
 618     JSFunction* throwTypeErrorFunction = JSFunction::create(vm, this, 0, String(), globalFuncThrowTypeError);
 619     m_throwTypeErrorFunction.set(vm, this, throwTypeErrorFunction);
 620
 621     JSCell* functionConstructor = FunctionConstructor::create(vm, FunctionConstructor::createStructure(vm, this, m_functionPrototype.get()), m_functionPrototype.get());
 622
 623     ArrayConstructor* arrayConstructor = ArrayConstructor::create(vm, this, ArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_arrayPrototype.get(), m_speciesGetterSetter.get());
 624     m_arrayConstructor.set(vm, this, arrayConstructor);
 625
 626     m_regExpConstructor.set(vm, this, RegExpConstructor::create(vm, RegExpConstructor::createStructure(vm, this, m_functionPrototype.get()), m_regExpPrototype.get(), m_speciesGetterSetter.get()));
 627
 628     JSArrayBufferConstructor* arrayBufferConstructor = JSArrayBufferConstructor::create(vm, JSArrayBufferConstructor::createStructure(vm, this, m_functionPrototype.get()), m_arrayBufferPrototype.get(), m_speciesGetterSetter.get(), ArrayBufferSharingMode::Default);
 629     m_arrayBufferPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, arrayBufferConstructor, DontEnum);
 630     JSArrayBufferConstructor* sharedArrayBufferConstructor = nullptr;
 631     sharedArrayBufferConstructor = JSArrayBufferConstructor::create(vm, JSArrayBufferConstructor::createStructure(vm, this, m_functionPrototype.get()), m_sharedArrayBufferPrototype.get(), m_speciesGetterSetter.get(), ArrayBufferSharingMode::Shared);
 632     m_sharedArrayBufferPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, sharedArrayBufferConstructor, DontEnum);
 633
 634 #define CREATE_CONSTRUCTOR_FOR_SIMPLE_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase) \
 635 capitalName ## Constructor* lowerName ## Constructor = capitalName ## Constructor::create(vm, capitalName ## Constructor::createStructure(vm, this, m_functionPrototype.get()), m_ ## lowerName ## Prototype.get(), m_speciesGetterSetter.get()); \
 636 m_ ## lowerName ## Prototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, lowerName ## Constructor, DontEnum); \
 637
 638     FOR_EACH_SIMPLE_BUILTIN_TYPE(CREATE_CONSTRUCTOR_FOR_SIMPLE_TYPE)
 639
 640 #undef CREATE_CONSTRUCTOR_FOR_SIMPLE_TYPE
 641
 642     m_errorConstructor.set(vm, this, errorConstructor);
 643     m_promiseConstructor.set(vm, this, promiseConstructor);
 644     m_internalPromiseConstructor.set(vm, this, internalPromiseConstructor);
 645
 646     m_nativeErrorPrototypeStructure.set(vm, this, NativeErrorPrototype::createStructure(vm, this, m_errorPrototype.get()));
 647     m_nativeErrorStructure.set(vm, this, NativeErrorConstructor::createStructure(vm, this, errorConstructor));
 648     m_evalErrorConstructor.initLater(
 649         [] (const Initializer<NativeErrorConstructor>& init) {
 650             init.set(NativeErrorConstructor::create(init.vm, init.owner, init.owner->m_nativeErrorStructure.get(), init.owner->m_nativeErrorPrototypeStructure.get(), ASCIILiteral("EvalError")));
 651         });
 652     m_rangeErrorConstructor.set(vm, this, NativeErrorConstructor::create(vm, this, m_nativeErrorStructure.get(), m_nativeErrorPrototypeStructure.get(), ASCIILiteral("RangeError")));
 653     m_referenceErrorConstructor.initLater(
 654         [] (const Initializer<NativeErrorConstructor>& init) {
 655             init.set(NativeErrorConstructor::create(init.vm, init.owner, init.owner->m_nativeErrorStructure.get(), init.owner->m_nativeErrorPrototypeStructure.get(), ASCIILiteral("ReferenceError")));
 656         });
 657     m_syntaxErrorConstructor.initLater(
 658         [] (const Initializer<NativeErrorConstructor>& init) {
 659             init.set(NativeErrorConstructor::create(init.vm, init.owner, init.owner->m_nativeErrorStructure.get(), init.owner->m_nativeErrorPrototypeStructure.get(), ASCIILiteral("SyntaxError")));
 660         });
 661     m_typeErrorConstructor.set(vm, this, NativeErrorConstructor::create(vm, this, m_nativeErrorStructure.get(), m_nativeErrorPrototypeStructure.get(), ASCIILiteral("TypeError")));
 662     m_URIErrorConstructor.initLater(
 663         [] (const Initializer<NativeErrorConstructor>& init) {
 664             init.set(NativeErrorConstructor::create(init.vm, init.owner, init.owner->m_nativeErrorStructure.get(), init.owner->m_nativeErrorPrototypeStructure.get(), ASCIILiteral("URIError")));
 665         });
 666
 667     m_generatorFunctionPrototype.set(vm, this, GeneratorFunctionPrototype::create(vm, GeneratorFunctionPrototype::createStructure(vm, this, m_functionPrototype.get())));
 668     GeneratorFunctionConstructor* generatorFunctionConstructor = GeneratorFunctionConstructor::create(vm, GeneratorFunctionConstructor::createStructure(vm, this, functionConstructor), m_generatorFunctionPrototype.get());
 669     m_generatorFunctionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, generatorFunctionConstructor, DontEnum | ReadOnly);
 670     m_generatorFunctionStructure.set(vm, this, JSGeneratorFunction::createStructure(vm, this, m_generatorFunctionPrototype.get()));
 671
 672     m_generatorPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, m_generatorFunctionPrototype.get(), DontEnum | ReadOnly);
 673     m_generatorFunctionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->prototype, m_generatorPrototype.get(), DontEnum | ReadOnly);
 674
 675     m_asyncFunctionPrototype.set(vm, this, AsyncFunctionPrototype::create(vm, AsyncFunctionPrototype::createStructure(vm, this, m_functionPrototype.get())));
 676     AsyncFunctionConstructor* asyncFunctionConstructor = AsyncFunctionConstructor::create(vm, AsyncFunctionConstructor::createStructure(vm, this, functionConstructor), m_asyncFunctionPrototype.get());
 677     m_asyncFunctionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, asyncFunctionConstructor, DontEnum | ReadOnly);
 678     m_asyncFunctionStructure.set(vm, this, JSAsyncFunction::createStructure(vm, this, m_asyncFunctionPrototype.get()));
 679
 680     m_asyncGeneratorFunctionPrototype.set(vm, this, AsyncGeneratorFunctionPrototype::create(vm, AsyncGeneratorFunctionPrototype::createStructure(vm, this, m_functionPrototype.get())));
 681     AsyncGeneratorFunctionConstructor* asyncGeneratorFunctionConstructor = AsyncGeneratorFunctionConstructor::create(vm, AsyncGeneratorFunctionConstructor::createStructure(vm, this, functionConstructor), m_asyncGeneratorFunctionPrototype.get());
 682     m_asyncGeneratorFunctionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, asyncGeneratorFunctionConstructor, DontEnum | ReadOnly);
 683     m_asyncGeneratorFunctionStructure.set(vm, this, JSAsyncGeneratorFunction::createStructure(vm, this, m_asyncGeneratorFunctionPrototype.get()));
 684
 685     m_asyncGeneratorPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, m_asyncGeneratorFunctionPrototype.get(), DontEnum | ReadOnly);
 686     m_asyncGeneratorFunctionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->prototype, m_asyncGeneratorPrototype.get(), DontEnum | ReadOnly);
 687
 688
 689     m_objectPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, objectConstructor, DontEnum);
 690     m_functionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, functionConstructor, DontEnum);
 691     m_arrayPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, arrayConstructor, DontEnum);
 692     m_regExpPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, m_regExpConstructor.get(), DontEnum);
 693
 694     putDirectWithoutTransition(vm, vm.propertyNames->Object, objectConstructor, DontEnum);
 695     putDirectWithoutTransition(vm, vm.propertyNames->Function, functionConstructor, DontEnum);
 696     putDirectWithoutTransition(vm, vm.propertyNames->Array, arrayConstructor, DontEnum);
 697     putDirectWithoutTransition(vm, vm.propertyNames->RegExp, m_regExpConstructor.get(), DontEnum);
 698     putDirectWithoutTransition(vm, vm.propertyNames->RangeError, m_rangeErrorConstructor.get(), DontEnum);
 699     putDirectWithoutTransition(vm, vm.propertyNames->TypeError, m_typeErrorConstructor.get(), DontEnum);
 700
 701     putDirectWithoutTransition(vm, vm.propertyNames->builtinNames().ObjectPrivateName(), objectConstructor, DontEnum | DontDelete | ReadOnly);
 702     putDirectWithoutTransition(vm, vm.propertyNames->builtinNames().ArrayPrivateName(), arrayConstructor, DontEnum | DontDelete | ReadOnly);
 703
 704     putDirectWithoutTransition(vm, vm.propertyNames->ArrayBuffer, arrayBufferConstructor, DontEnum);
 705     putDirectWithoutTransition(vm, vm.propertyNames->SharedArrayBuffer, sharedArrayBufferConstructor, DontEnum);
 706
 707 #define PUT_CONSTRUCTOR_FOR_SIMPLE_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase) \
 708 putDirectWithoutTransition(vm, vm.propertyNames-> jsName, lowerName ## Constructor, DontEnum); \
 709
 710     FOR_EACH_SIMPLE_BUILTIN_TYPE_WITH_CONSTRUCTOR(PUT_CONSTRUCTOR_FOR_SIMPLE_TYPE)
 711
 712 #undef PUT_CONSTRUCTOR_FOR_SIMPLE_TYPE
 713     m_iteratorResultObjectStructure.set(vm, this, createIteratorResultObjectStructure(vm, *this));
 714
 715     m_evalFunction.set(vm, this, JSFunction::create(vm, this, 1, vm.propertyNames->eval.string(), globalFuncEval));
 716     putDirectWithoutTransition(vm, vm.propertyNames->eval, m_evalFunction.get(), DontEnum);
 717
 718 #if ENABLE(INTL)
 719     IntlObject* intl = IntlObject::create(vm, this, IntlObject::createStructure(vm, this, m_objectPrototype.get()));
 720     putDirectWithoutTransition(vm, vm.propertyNames->Intl, intl, DontEnum);
 721 #endif // ENABLE(INTL)
 722     ReflectObject* reflectObject = ReflectObject::create(vm, this, ReflectObject::createStructure(vm, this, m_objectPrototype.get()));
 723     putDirectWithoutTransition(vm, vm.propertyNames->Reflect, reflectObject, DontEnum);
 724
 725     m_moduleLoaderStructure.set(vm, this, JSModuleLoader::createStructure(vm, this, m_moduleLoaderPrototype.get()));
 726     m_moduleLoader.set(vm, this, JSModuleLoader::create(globalExec(), vm, this, m_moduleLoaderStructure.get()));
 727     if (Options::exposeInternalModuleLoader())
 728         putDirectWithoutTransition(vm, vm.propertyNames->Loader, m_moduleLoader.get(), DontEnum);
 729
 730     JSFunction* builtinLog = JSFunction::create(vm, this, 1, vm.propertyNames->emptyIdentifier.string(), globalFuncBuiltinLog);
 731
 732     JSFunction* privateFuncAbs = JSFunction::create(vm, this, 0, String(), mathProtoFuncAbs, AbsIntrinsic);
 733     JSFunction* privateFuncFloor = JSFunction::create(vm, this, 0, String(), mathProtoFuncFloor, FloorIntrinsic);
 734     JSFunction* privateFuncTrunc = JSFunction::create(vm, this, 0, String(), mathProtoFuncTrunc, TruncIntrinsic);
 735
 736     JSFunction* privateFuncGetOwnPropertyNames = JSFunction::create(vm, this, 0, String(), objectConstructorGetOwnPropertyNames);
 737     JSFunction* privateFuncPropertyIsEnumerable = JSFunction::create(vm, this, 0, String(), globalFuncPropertyIsEnumerable);
 738     JSFunction* privateFuncImportModule = JSFunction::create(vm, this, 0, String(), globalFuncImportModule);
 739     JSFunction* privateFuncTypedArrayLength = JSFunction::create(vm, this, 0, String(), typedArrayViewPrivateFuncLength);
 740     JSFunction* privateFuncTypedArrayGetOriginalConstructor = JSFunction::create(vm, this, 0, String(), typedArrayViewPrivateFuncGetOriginalConstructor);
 741     JSFunction* privateFuncTypedArraySort = JSFunction::create(vm, this, 0, String(), typedArrayViewPrivateFuncSort);
 742     JSFunction* privateFuncIsTypedArrayView = JSFunction::create(vm, this, 0, String(), typedArrayViewPrivateFuncIsTypedArrayView, IsTypedArrayViewIntrinsic);
 743     JSFunction* privateFuncTypedArraySubarrayCreate = JSFunction::create(vm, this, 0, String(), typedArrayViewPrivateFuncSubarrayCreate);
 744     JSFunction* privateFuncIsBoundFunction = JSFunction::create(vm, this, 0, String(), isBoundFunction);
 745     JSFunction* privateFuncHasInstanceBoundFunction = JSFunction::create(vm, this, 0, String(), hasInstanceBoundFunction);
 746     JSFunction* privateFuncInstanceOf = JSFunction::create(vm, this, 0, String(), objectPrivateFuncInstanceOf);
 747     JSFunction* privateFuncThisTimeValue = JSFunction::create(vm, this, 0, String(), dateProtoFuncGetTime);
 748     JSFunction* privateFuncThisNumberValue = JSFunction::create(vm, this, 0, String(), numberProtoFuncValueOf);
 749     JSFunction* privateFuncIsArrayConstructor = JSFunction::create(vm, this, 0, String(), arrayConstructorPrivateFuncIsArrayConstructor);
 750     JSFunction* privateFuncIsArraySlow = JSFunction::create(vm, this, 0, String(), arrayConstructorPrivateFuncIsArraySlow);
 751     JSFunction* privateFuncConcatMemcpy = JSFunction::create(vm, this, 0, String(), arrayProtoPrivateFuncConcatMemcpy);
 752     JSFunction* privateFuncAppendMemcpy = JSFunction::create(vm, this, 0, String(), arrayProtoPrivateFuncAppendMemcpy);
 753     JSFunction* privateFuncMapBucketHead = JSFunction::create(vm, this, 0, String(), mapPrivateFuncMapBucketHead, JSMapBucketHeadIntrinsic);
 754     JSFunction* privateFuncMapBucketNext = JSFunction::create(vm, this, 0, String(), mapPrivateFuncMapBucketNext, JSMapBucketNextIntrinsic);
 755     JSFunction* privateFuncMapBucketKey = JSFunction::create(vm, this, 0, String(), mapPrivateFuncMapBucketKey, JSMapBucketKeyIntrinsic);
 756     JSFunction* privateFuncMapBucketValue = JSFunction::create(vm, this, 0, String(), mapPrivateFuncMapBucketValue, JSMapBucketValueIntrinsic);
 757     JSFunction* privateFuncSetBucketHead = JSFunction::create(vm, this, 0, String(), setPrivateFuncSetBucketHead, JSSetBucketHeadIntrinsic);
 758     JSFunction* privateFuncSetBucketNext = JSFunction::create(vm, this, 0, String(), setPrivateFuncSetBucketNext, JSSetBucketNextIntrinsic);
 759     JSFunction* privateFuncSetBucketKey = JSFunction::create(vm, this, 0, String(), setPrivateFuncSetBucketKey, JSSetBucketKeyIntrinsic);
 760
 761     JSObject* regExpProtoFlagsGetterObject = getGetterById(exec, m_regExpPrototype.get(), vm.propertyNames->flags);
 762     catchScope.assertNoException();
 763     JSObject* regExpProtoGlobalGetterObject = getGetterById(exec, m_regExpPrototype.get(), vm.propertyNames->global);
 764     catchScope.assertNoException();
 765     m_regExpProtoGlobalGetter.set(vm, this, regExpProtoGlobalGetterObject);
 766     JSObject* regExpProtoIgnoreCaseGetterObject = getGetterById(exec, m_regExpPrototype.get(), vm.propertyNames->ignoreCase);
 767     catchScope.assertNoException();
 768     JSObject* regExpProtoMultilineGetterObject = getGetterById(exec, m_regExpPrototype.get(), vm.propertyNames->multiline);
 769     catchScope.assertNoException();
 770     JSObject* regExpProtoSourceGetterObject = getGetterById(exec, m_regExpPrototype.get(), vm.propertyNames->source);
 771     catchScope.assertNoException();
 772     JSObject* regExpProtoStickyGetterObject = getGetterById(exec, m_regExpPrototype.get(), vm.propertyNames->sticky);
 773     catchScope.assertNoException();
 774     JSObject* regExpProtoUnicodeGetterObject = getGetterById(exec, m_regExpPrototype.get(), vm.propertyNames->unicode);
 775     catchScope.assertNoException();
 776     m_regExpProtoUnicodeGetter.set(vm, this, regExpProtoUnicodeGetterObject);
 777     JSObject* builtinRegExpExec = asObject(m_regExpPrototype->getDirect(vm, vm.propertyNames->exec).asCell());
 778     m_regExpProtoExec.set(vm, this, builtinRegExpExec);
 779     JSObject* regExpSymbolReplace = asObject(m_regExpPrototype->getDirect(vm, vm.propertyNames->replaceSymbol).asCell());
 780     m_regExpProtoSymbolReplace.set(vm, this, regExpSymbolReplace);
 781
 782 #define CREATE_PRIVATE_GLOBAL_FUNCTION(name, code) JSFunction* name ## PrivateFunction = JSFunction::create(vm, code ## CodeGenerator(vm), this);
 783     JSC_FOREACH_BUILTIN_FUNCTION_PRIVATE_GLOBAL_NAME(CREATE_PRIVATE_GLOBAL_FUNCTION)
 784 #undef CREATE_PRIVATE_GLOBAL_FUNCTION
 785
 786     JSObject* arrayIteratorPrototype = ArrayIteratorPrototype::create(vm, this, ArrayIteratorPrototype::createStructure(vm, this, m_iteratorPrototype.get()));
 787     createArrayIteratorPrivateFunction->putDirect(vm, vm.propertyNames->prototype, arrayIteratorPrototype);
 788
 789     JSObject* asyncFromSyncIteratorPrototype = AsyncFromSyncIteratorPrototype::create(vm, this, AsyncFromSyncIteratorPrototype::createStructure(vm, this, m_iteratorPrototype.get()));
 790     AsyncFromSyncIteratorConstructorPrivateFunction->putDirect(vm, vm.propertyNames->prototype, asyncFromSyncIteratorPrototype);
 791
 792     JSObject* mapIteratorPrototype = MapIteratorPrototype::create(vm, this, MapIteratorPrototype::createStructure(vm, this, m_iteratorPrototype.get()));
 793     createMapIteratorPrivateFunction->putDirect(vm, vm.propertyNames->prototype, mapIteratorPrototype);
 794
 795     JSObject* setIteratorPrototype = SetIteratorPrototype::create(vm, this, SetIteratorPrototype::createStructure(vm, this, m_iteratorPrototype.get()));
 796     createSetIteratorPrivateFunction->putDirect(vm, vm.propertyNames->prototype, setIteratorPrototype);
 797
 798     GlobalPropertyInfo staticGlobals[] = {
 799 #define INIT_PRIVATE_GLOBAL(name, code) GlobalPropertyInfo(vm.propertyNames->builtinNames().name ## PrivateName(), name ## PrivateFunction, DontEnum | DontDelete | ReadOnly),
 800         JSC_FOREACH_BUILTIN_FUNCTION_PRIVATE_GLOBAL_NAME(INIT_PRIVATE_GLOBAL)
 801 #undef INIT_PRIVATE_GLOBAL
 802         GlobalPropertyInfo(vm.propertyNames->NaN, jsNaN(), DontEnum | DontDelete | ReadOnly),
 803         GlobalPropertyInfo(vm.propertyNames->Infinity, jsNumber(std::numeric_limits<double>::infinity()), DontEnum | DontDelete | ReadOnly),
 804         GlobalPropertyInfo(vm.propertyNames->undefinedKeyword, jsUndefined(), DontEnum | DontDelete | ReadOnly),
 805         GlobalPropertyInfo(vm.propertyNames->builtinNames().getOwnPropertyNamesPrivateName(), privateFuncGetOwnPropertyNames, DontEnum | DontDelete | ReadOnly),
 806         GlobalPropertyInfo(vm.propertyNames->builtinNames().propertyIsEnumerablePrivateName(), privateFuncPropertyIsEnumerable, DontEnum | DontDelete | ReadOnly),
 807         GlobalPropertyInfo(vm.propertyNames->builtinNames().importModulePrivateName(), privateFuncImportModule, DontEnum | DontDelete | ReadOnly),
 808         GlobalPropertyInfo(vm.propertyNames->builtinNames().enqueueJobPrivateName(), JSFunction::create(vm, this, 0, String(), enqueueJob), DontEnum | DontDelete | ReadOnly),
 809         GlobalPropertyInfo(vm.propertyNames->builtinNames().ErrorPrivateName(), m_errorConstructor.get(), DontEnum | DontDelete | ReadOnly),
 810         GlobalPropertyInfo(vm.propertyNames->builtinNames().RangeErrorPrivateName(), m_rangeErrorConstructor.get(), DontEnum | DontDelete | ReadOnly),
 811         GlobalPropertyInfo(vm.propertyNames->builtinNames().TypeErrorPrivateName(), m_typeErrorConstructor.get(), DontEnum | DontDelete | ReadOnly),
 812         GlobalPropertyInfo(vm.propertyNames->builtinNames().typedArrayLengthPrivateName(), privateFuncTypedArrayLength, DontEnum | DontDelete | ReadOnly),
 813         GlobalPropertyInfo(vm.propertyNames->builtinNames().typedArrayGetOriginalConstructorPrivateName(), privateFuncTypedArrayGetOriginalConstructor, DontEnum | DontDelete | ReadOnly),
 814         GlobalPropertyInfo(vm.propertyNames->builtinNames().typedArraySortPrivateName(), privateFuncTypedArraySort, DontEnum | DontDelete | ReadOnly),
 815         GlobalPropertyInfo(vm.propertyNames->builtinNames().isTypedArrayViewPrivateName(), privateFuncIsTypedArrayView, DontEnum | DontDelete | ReadOnly),
 816         GlobalPropertyInfo(vm.propertyNames->builtinNames().typedArraySubarrayCreatePrivateName(), privateFuncTypedArraySubarrayCreate, DontEnum | DontDelete | ReadOnly),
 817         GlobalPropertyInfo(vm.propertyNames->builtinNames().isBoundFunctionPrivateName(), privateFuncIsBoundFunction, DontEnum | DontDelete | ReadOnly),
 818         GlobalPropertyInfo(vm.propertyNames->builtinNames().hasInstanceBoundFunctionPrivateName(), privateFuncHasInstanceBoundFunction, DontEnum | DontDelete | ReadOnly),
 819         GlobalPropertyInfo(vm.propertyNames->builtinNames().instanceOfPrivateName(), privateFuncInstanceOf, DontEnum | DontDelete | ReadOnly),
 820         GlobalPropertyInfo(vm.propertyNames->builtinNames().BuiltinLogPrivateName(), builtinLog, DontEnum | DontDelete | ReadOnly),
 821         GlobalPropertyInfo(vm.propertyNames->builtinNames().NumberPrivateName(), numberConstructor, DontEnum | DontDelete | ReadOnly),
 822         GlobalPropertyInfo(vm.propertyNames->builtinNames().RegExpPrivateName(), m_regExpConstructor.get(), DontEnum | DontDelete | ReadOnly),
 823         GlobalPropertyInfo(vm.propertyNames->builtinNames().StringPrivateName(), stringConstructor, DontEnum | DontDelete | ReadOnly),
 824         GlobalPropertyInfo(vm.propertyNames->builtinNames().absPrivateName(), privateFuncAbs, DontEnum | DontDelete | ReadOnly),
 825         GlobalPropertyInfo(vm.propertyNames->builtinNames().floorPrivateName(), privateFuncFloor, DontEnum | DontDelete | ReadOnly),
 826         GlobalPropertyInfo(vm.propertyNames->builtinNames().truncPrivateName(), privateFuncTrunc, DontEnum | DontDelete | ReadOnly),
 827         GlobalPropertyInfo(vm.propertyNames->builtinNames().PromisePrivateName(), promiseConstructor, DontEnum | DontDelete | ReadOnly),
 828         GlobalPropertyInfo(vm.propertyNames->builtinNames().ReflectPrivateName(), reflectObject, DontEnum | DontDelete | ReadOnly),
 829         GlobalPropertyInfo(vm.propertyNames->builtinNames().InternalPromisePrivateName(), internalPromiseConstructor, DontEnum | DontDelete | ReadOnly),
 830
 831         GlobalPropertyInfo(vm.propertyNames->builtinNames().repeatCharacterPrivateName(), JSFunction::create(vm, this, 2, String(), stringProtoFuncRepeatCharacter), DontEnum | DontDelete | ReadOnly),
 832         GlobalPropertyInfo(vm.propertyNames->builtinNames().isArrayPrivateName(), arrayConstructor->getDirect(vm, vm.propertyNames->isArray), DontEnum | DontDelete | ReadOnly),
 833         GlobalPropertyInfo(vm.propertyNames->builtinNames().isArraySlowPrivateName(), privateFuncIsArraySlow, DontEnum | DontDelete | ReadOnly),
 834         GlobalPropertyInfo(vm.propertyNames->builtinNames().isArrayConstructorPrivateName(), privateFuncIsArrayConstructor, DontEnum | DontDelete | ReadOnly),
 835         GlobalPropertyInfo(vm.propertyNames->builtinNames().concatMemcpyPrivateName(), privateFuncConcatMemcpy, DontEnum | DontDelete | ReadOnly),
 836         GlobalPropertyInfo(vm.propertyNames->builtinNames().appendMemcpyPrivateName(), privateFuncAppendMemcpy, DontEnum | DontDelete | ReadOnly),
 837
 838         GlobalPropertyInfo(vm.propertyNames->builtinNames().hostPromiseRejectionTrackerPrivateName(), JSFunction::create(vm, this, 2, String(), globalFuncHostPromiseRejectionTracker), DontEnum | DontDelete | ReadOnly),
 839         GlobalPropertyInfo(vm.propertyNames->builtinNames().InspectorInstrumentationPrivateName(), InspectorInstrumentationObject::create(vm, this, InspectorInstrumentationObject::createStructure(vm, this, m_objectPrototype.get())), DontEnum | DontDelete | ReadOnly),
 840         GlobalPropertyInfo(vm.propertyNames->builtinNames().MapPrivateName(), mapConstructor, DontEnum | DontDelete | ReadOnly),
 841         GlobalPropertyInfo(vm.propertyNames->builtinNames().SetPrivateName(), setConstructor, DontEnum | DontDelete | ReadOnly),
 842         GlobalPropertyInfo(vm.propertyNames->builtinNames().thisTimeValuePrivateName(), privateFuncThisTimeValue, DontEnum | DontDelete | ReadOnly),
 843         GlobalPropertyInfo(vm.propertyNames->builtinNames().thisNumberValuePrivateName(), privateFuncThisNumberValue, DontEnum | DontDelete | ReadOnly),
 844 #if ENABLE(INTL)
 845         GlobalPropertyInfo(vm.propertyNames->builtinNames().CollatorPrivateName(), intl->getDirect(vm, vm.propertyNames->Collator), DontEnum | DontDelete | ReadOnly),
 846         GlobalPropertyInfo(vm.propertyNames->builtinNames().DateTimeFormatPrivateName(), intl->getDirect(vm, vm.propertyNames->DateTimeFormat), DontEnum | DontDelete | ReadOnly),
 847         GlobalPropertyInfo(vm.propertyNames->builtinNames().NumberFormatPrivateName(), intl->getDirect(vm, vm.propertyNames->NumberFormat), DontEnum | DontDelete | ReadOnly),
 848 #endif // ENABLE(INTL)
 849
 850         GlobalPropertyInfo(vm.propertyNames->builtinNames().isConstructorPrivateName(), JSFunction::create(vm, this, 1, String(), esSpecIsConstructor, NoIntrinsic), DontEnum | DontDelete | ReadOnly),
 851
 852         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpProtoFlagsGetterPrivateName(), regExpProtoFlagsGetterObject, DontEnum | DontDelete | ReadOnly),
 853         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpProtoGlobalGetterPrivateName(), regExpProtoGlobalGetterObject, DontEnum | DontDelete | ReadOnly),
 854         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpProtoIgnoreCaseGetterPrivateName(), regExpProtoIgnoreCaseGetterObject, DontEnum | DontDelete | ReadOnly),
 855         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpProtoMultilineGetterPrivateName(), regExpProtoMultilineGetterObject, DontEnum | DontDelete | ReadOnly),
 856         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpProtoSourceGetterPrivateName(), regExpProtoSourceGetterObject, DontEnum | DontDelete | ReadOnly),
 857         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpProtoStickyGetterPrivateName(), regExpProtoStickyGetterObject, DontEnum | DontDelete | ReadOnly),
 858         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpProtoUnicodeGetterPrivateName(), regExpProtoUnicodeGetterObject, DontEnum | DontDelete | ReadOnly),
 859
 860         // RegExp.prototype helpers.
 861         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpBuiltinExecPrivateName(), builtinRegExpExec, DontEnum | DontDelete | ReadOnly),
 862         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpCreatePrivateName(), JSFunction::create(vm, this, 2, String(), esSpecRegExpCreate, NoIntrinsic), DontEnum | DontDelete | ReadOnly),
 863         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpMatchFastPrivateName(), JSFunction::create(vm, this, 1, String(), regExpProtoFuncMatchFast), DontEnum | DontDelete | ReadOnly),
 864         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpSearchFastPrivateName(), JSFunction::create(vm, this, 1, String(), regExpProtoFuncSearchFast), DontEnum | DontDelete | ReadOnly),
 865         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpSplitFastPrivateName(), JSFunction::create(vm, this, 2, String(), regExpProtoFuncSplitFast), DontEnum | DontDelete | ReadOnly),
 866         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpPrototypeSymbolReplacePrivateName(), m_regExpPrototype->getDirect(vm, vm.propertyNames->replaceSymbol), DontEnum | DontDelete | ReadOnly),
 867         GlobalPropertyInfo(vm.propertyNames->builtinNames().regExpTestFastPrivateName(), JSFunction::create(vm, this, 1, String(), regExpProtoFuncTestFast, RegExpTestFastIntrinsic), DontEnum | DontDelete | ReadOnly),
 868
 869         // String.prototype helpers.
 870         GlobalPropertyInfo(vm.propertyNames->builtinNames().stringIncludesInternalPrivateName(), JSFunction::create(vm, this, 1, String(), builtinStringIncludesInternal), DontEnum | DontDelete | ReadOnly),
 871         GlobalPropertyInfo(vm.propertyNames->builtinNames().stringSplitFastPrivateName(), JSFunction::create(vm, this, 2, String(), stringProtoFuncSplitFast), DontEnum | DontDelete | ReadOnly),
 872         GlobalPropertyInfo(vm.propertyNames->builtinNames().stringSubstrInternalPrivateName(), JSFunction::create(vm, this, 2, String(), builtinStringSubstrInternal), DontEnum | DontDelete | ReadOnly),
 873
 874         // Function prototype helpers.
 875         GlobalPropertyInfo(vm.propertyNames->builtinNames().makeBoundFunctionPrivateName(), JSFunction::create(vm, this, 5, String(), makeBoundFunction), DontEnum | DontDelete | ReadOnly),
 876         GlobalPropertyInfo(vm.propertyNames->builtinNames().hasOwnLengthPropertyPrivateName(), JSFunction::create(vm, this, 1, String(), hasOwnLengthProperty), DontEnum | DontDelete | ReadOnly),
 877
 878         // Map and Set helpers.
 879         GlobalPropertyInfo(vm.propertyNames->builtinNames().mapBucketHeadPrivateName(), privateFuncMapBucketHead, DontEnum | DontDelete | ReadOnly),
 880         GlobalPropertyInfo(vm.propertyNames->builtinNames().mapBucketNextPrivateName(), privateFuncMapBucketNext, DontEnum | DontDelete | ReadOnly),
 881         GlobalPropertyInfo(vm.propertyNames->builtinNames().mapBucketKeyPrivateName(), privateFuncMapBucketKey, DontEnum | DontDelete | ReadOnly),
 882         GlobalPropertyInfo(vm.propertyNames->builtinNames().mapBucketValuePrivateName(), privateFuncMapBucketValue, DontEnum | DontDelete | ReadOnly),
 883         GlobalPropertyInfo(vm.propertyNames->builtinNames().setBucketHeadPrivateName(), privateFuncSetBucketHead, DontEnum | DontDelete | ReadOnly),
 884         GlobalPropertyInfo(vm.propertyNames->builtinNames().setBucketNextPrivateName(), privateFuncSetBucketNext, DontEnum | DontDelete | ReadOnly),
 885         GlobalPropertyInfo(vm.propertyNames->builtinNames().setBucketKeyPrivateName(), privateFuncSetBucketKey, DontEnum | DontDelete | ReadOnly),
 886     };
 887     addStaticGlobals(staticGlobals, WTF_ARRAY_LENGTH(staticGlobals));
 888
 889     m_specialPointers[Special::CallFunction] = m_callFunction.get();
 890     m_specialPointers[Special::ApplyFunction] = m_applyFunction.get();
 891     m_specialPointers[Special::ObjectConstructor] = objectConstructor;
 892     m_specialPointers[Special::ArrayConstructor] = arrayConstructor;
 893
 894     m_linkTimeConstants[static_cast<unsigned>(LinkTimeConstant::ThrowTypeErrorFunction)] = m_throwTypeErrorFunction.get();
 895
 896     if (UNLIKELY(Options::useDollarVM())) {
 897         JSDollarVMPrototype* dollarVMPrototype = JSDollarVMPrototype::create(vm, this, JSDollarVMPrototype::createStructure(vm, this, m_objectPrototype.get()));
 898         m_dollarVMStructure.set(vm, this, JSDollarVM::createStructure(vm, this, dollarVMPrototype));
 899         JSDollarVM* dollarVM = JSDollarVM::create(vm, m_dollarVMStructure.get());
 900
 901         GlobalPropertyInfo extraStaticGlobals[] = {
 902             GlobalPropertyInfo(vm.propertyNames->builtinNames().dollarVMPrivateName(), dollarVM, DontEnum | DontDelete | ReadOnly),
 903         };
 904         addStaticGlobals(extraStaticGlobals, WTF_ARRAY_LENGTH(extraStaticGlobals));
 905
 906         putDirectWithoutTransition(vm, Identifier::fromString(exec, "$vm"), dollarVM, DontEnum);
 907     }
 908
 909 #if ENABLE(WEBASSEMBLY)
 910     if (Options::useWebAssembly()) {
 911         auto* webAssemblyPrototype = WebAssemblyPrototype::create(vm, this, WebAssemblyPrototype::createStructure(vm, this, m_objectPrototype.get()));
 912         m_webAssemblyStructure.set(vm, this, JSWebAssembly::createStructure(vm, this, webAssemblyPrototype));
 913         m_webAssemblyModuleRecordStructure.set(vm, this, WebAssemblyModuleRecord::createStructure(vm, this, m_objectPrototype.get()));
 914         m_webAssemblyFunctionStructure.set(vm, this, WebAssemblyFunction::createStructure(vm, this, m_functionPrototype.get()));
 915         m_webAssemblyWrapperFunctionStructure.set(vm, this, WebAssemblyWrapperFunction::createStructure(vm, this, m_functionPrototype.get()));
 916         m_webAssemblyToJSCalleeStructure.set(vm, this, WebAssemblyToJSCallee::createStructure(vm, this, jsNull()));
 917         auto* webAssembly = JSWebAssembly::create(vm, this, m_webAssemblyStructure.get());
 918         putDirectWithoutTransition(vm, Identifier::fromString(exec, "WebAssembly"), webAssembly, DontEnum);
 919
 920 #define CREATE_WEBASSEMBLY_CONSTRUCTOR(capitalName, lowerName, properName, instanceType, jsName, prototypeBase) do { \
 921         typedef capitalName ## Prototype Prototype; \
 922         typedef capitalName ## Constructor Constructor; \
 923         typedef JS ## capitalName JSObj; \
 924         auto* base = m_ ## prototypeBase ## Prototype.get(); \
 925         auto* prototype = Prototype::create(vm, this, Prototype::createStructure(vm, this, base)); \
 926         auto* structure = JSObj::createStructure(vm, this, prototype); \
 927         auto* constructor = Constructor::create(vm, Constructor::createStructure(vm, this, this->functionPrototype()), prototype); \
 928         prototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, constructor, DontEnum); \
 929         m_ ## lowerName ## Prototype.set(vm, this, prototype); \
 930         m_ ## properName ## Structure.set(vm, this, structure); \
 931         webAssembly->putDirectWithoutTransition(vm, Identifier::fromString(this->globalExec(), #jsName), constructor, DontEnum); \
 932     } while (0);
 933
 934         FOR_EACH_WEBASSEMBLY_CONSTRUCTOR_TYPE(CREATE_WEBASSEMBLY_CONSTRUCTOR)
 935
 936 #undef CREATE_WEBASSEMBLY_CONSTRUCTOR
 937     }
 938 #endif // ENABLE(WEBASSEMBLY)
 939
 940     {
 941         ExecState* exec = globalExec();
 942
 943         auto setupAdaptiveWatchpoint = [&] (JSObject* base, const Identifier& ident) -> ObjectPropertyCondition {
 944             // Performing these gets should not throw.
 945             PropertySlot slot(base, PropertySlot::InternalMethodType::Get);
 946             bool result = base->getOwnPropertySlot(base, exec, ident, slot);
 947             ASSERT_UNUSED(result, result);
 948             catchScope.assertNoException();
 949             RELEASE_ASSERT(slot.isCacheableValue());
 950             JSValue functionValue = slot.getValue(exec, ident);
 951             catchScope.assertNoException();
 952             ASSERT(jsDynamicCast<JSFunction*>(vm, functionValue));
 953
 954             ObjectPropertyCondition condition = generateConditionForSelfEquivalence(m_vm, nullptr, base, ident.impl());
 955             RELEASE_ASSERT(condition.requiredValue() == functionValue);
 956
 957             bool isWatchable = condition.isWatchable(PropertyCondition::EnsureWatchability);
 958             RELEASE_ASSERT(isWatchable); // We allow this to install the necessary watchpoints.
 959
 960             return condition;
 961         };
 962
 963         {
 964             ObjectPropertyCondition condition = setupAdaptiveWatchpoint(arrayIteratorPrototype, m_vm.propertyNames->next);
 965             m_arrayIteratorPrototypeNext = std::make_unique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(vm, condition, m_arrayIteratorProtocolWatchpoint);
 966             m_arrayIteratorPrototypeNext->install();
 967         }
 968         {
 969             ObjectPropertyCondition condition = setupAdaptiveWatchpoint(this->arrayPrototype(), m_vm.propertyNames->iteratorSymbol);
 970             m_arrayPrototypeSymbolIteratorWatchpoint = std::make_unique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(vm, condition, m_arrayIteratorProtocolWatchpoint);
 971             m_arrayPrototypeSymbolIteratorWatchpoint->install();
 972         }
 973
 974         {
 975             ObjectPropertyCondition condition = setupAdaptiveWatchpoint(mapIteratorPrototype, m_vm.propertyNames->next);
 976             m_mapIteratorPrototypeNextWatchpoint = std::make_unique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(vm, condition, m_mapIteratorProtocolWatchpoint);
 977             m_mapIteratorPrototypeNextWatchpoint->install();
 978         }
 979         {
 980             ObjectPropertyCondition condition = setupAdaptiveWatchpoint(m_mapPrototype.get(), m_vm.propertyNames->iteratorSymbol);
 981             m_mapPrototypeSymbolIteratorWatchpoint = std::make_unique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(vm, condition, m_mapIteratorProtocolWatchpoint);
 982             m_mapPrototypeSymbolIteratorWatchpoint->install();
 983         }
 984
 985         {
 986             ObjectPropertyCondition condition = setupAdaptiveWatchpoint(setIteratorPrototype, m_vm.propertyNames->next);
 987             m_setIteratorPrototypeNextWatchpoint = std::make_unique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(vm, condition, m_setIteratorProtocolWatchpoint);
 988             m_setIteratorPrototypeNextWatchpoint->install();
 989         }
 990         {
 991             ObjectPropertyCondition condition = setupAdaptiveWatchpoint(m_setPrototype.get(), m_vm.propertyNames->iteratorSymbol);
 992             m_setPrototypeSymbolIteratorWatchpoint = std::make_unique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(vm, condition, m_setIteratorProtocolWatchpoint);
 993             m_setPrototypeSymbolIteratorWatchpoint->install();
 994         }
 995
 996         {
 997             ObjectPropertyCondition condition = setupAdaptiveWatchpoint(m_stringIteratorPrototype.get(), m_vm.propertyNames->next);
 998             m_stringIteratorPrototypeNextWatchpoint = std::make_unique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(vm, condition, m_stringIteratorProtocolWatchpoint);
 999             m_stringIteratorPrototypeNextWatchpoint->install();
1000         }
1001         {
1002             ObjectPropertyCondition condition = setupAdaptiveWatchpoint(m_stringPrototype.get(), m_vm.propertyNames->iteratorSymbol);
1003             m_stringPrototypeSymbolIteratorWatchpoint = std::make_unique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(vm, condition, m_stringIteratorProtocolWatchpoint);
1004             m_stringPrototypeSymbolIteratorWatchpoint->install();
1005         }
1006
1007         {
1008             ObjectPropertyCondition condition = setupAdaptiveWatchpoint(m_mapPrototype.get(), m_vm.propertyNames->set);
1009             m_mapPrototypeSetWatchpoint = std::make_unique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(vm, condition, m_mapSetWatchpoint);
1010             m_mapPrototypeSetWatchpoint->install();
1011         }
1012
1013         {
1014             ObjectPropertyCondition condition = setupAdaptiveWatchpoint(m_setPrototype.get(), m_vm.propertyNames->add);
1015             m_setPrototypeAddWatchpoint = std::make_unique<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>>(vm, condition, m_setAddWatchpoint);
1016             m_setPrototypeAddWatchpoint->install();
1017         }
1018     }
1019
1020     resetPrototype(vm, getPrototypeDirect());
1021 }
1022
1023 bool JSGlobalObject::put(JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
1024 {
1025     VM& vm = exec->vm();
1026     auto scope = DECLARE_THROW_SCOPE(vm);
1027     JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
1028     ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject));
1029
1030     if (UNLIKELY(isThisValueAltered(slot, thisObject))) {
1031         scope.release();
1032         return ordinarySetSlow(exec, thisObject, propertyName, value, slot.thisValue(), slot.isStrictMode());
1033     }
1034
1035     bool shouldThrowReadOnlyError = slot.isStrictMode();
1036     bool ignoreReadOnlyErrors = false;
1037     bool putResult = false;
1038     bool done = symbolTablePutTouchWatchpointSet(thisObject, exec, propertyName, value, shouldThrowReadOnlyError, ignoreReadOnlyErrors, putResult);
1039     ASSERT((!!scope.exception() == (done && !putResult)) || !shouldThrowReadOnlyError);
1040     if (done)
1041         return putResult;
1042     scope.release();
1043     return Base::put(thisObject, exec, propertyName, value, slot);
1044 }
1045
1046 bool JSGlobalObject::defineOwnProperty(JSObject* object, ExecState* exec, PropertyName propertyName, const PropertyDescriptor& descriptor, bool shouldThrow)
1047 {
1048     JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
1049     PropertySlot slot(thisObject, PropertySlot::InternalMethodType::VMInquiry);
1050     // silently ignore attempts to add accessors aliasing vars.
1051     if (descriptor.isAccessorDescriptor() && symbolTableGet(thisObject, propertyName, slot))
1052         return false;
1053     return Base::defineOwnProperty(thisObject, exec, propertyName, descriptor, shouldThrow);
1054 }
1055
1056 void JSGlobalObject::addGlobalVar(const Identifier& ident)
1057 {
1058     ConcurrentJSLocker locker(symbolTable()->m_lock);
1059     SymbolTableEntry entry = symbolTable()->get(locker, ident.impl());
1060     if (!entry.isNull())
1061         return;
1062
1063     ScopeOffset offset = symbolTable()->takeNextScopeOffset(locker);
1064     SymbolTableEntry newEntry(VarOffset(offset), 0);
1065     newEntry.prepareToWatch();
1066     symbolTable()->add(locker, ident.impl(), WTFMove(newEntry));
1067
1068     ScopeOffset offsetForAssert = addVariables(1, jsUndefined());
1069     RELEASE_ASSERT(offsetForAssert == offset);
1070 }
1071
1072 void JSGlobalObject::addFunction(ExecState* exec, const Identifier& propertyName)
1073 {
1074     VM& vm = exec->vm();
1075     VM::DeletePropertyModeScope scope(vm, VM::DeletePropertyMode::IgnoreConfigurable);
1076     methodTable(vm)->deleteProperty(this, exec, propertyName);
1077     addGlobalVar(propertyName);
1078 }
1079
1080 void JSGlobalObject::setGlobalScopeExtension(JSScope* scope)
1081 {
1082     m_globalScopeExtension.set(vm(), this, scope);
1083 }
1084
1085 void JSGlobalObject::clearGlobalScopeExtension()
1086 {
1087     m_globalScopeExtension.clear();
1088 }
1089
1090 static inline JSObject* lastInPrototypeChain(JSObject* object)
1091 {
1092     JSObject* o = object;
1093     while (o->getPrototypeDirect().isObject())
1094         o = asObject(o->getPrototypeDirect());
1095     return o;
1096 }
1097
1098 // Private namespace for helpers for JSGlobalObject::haveABadTime()
1099 namespace {
1100
1101 class ObjectsWithBrokenIndexingFinder : public MarkedBlock::VoidFunctor {
1102 public:
1103     ObjectsWithBrokenIndexingFinder(MarkedArgumentBuffer&, JSGlobalObject*);
1104     IterationStatus operator()(HeapCell*, HeapCell::Kind) const;
1105
1106 private:
1107     void visit(JSCell*);
1108
1109     MarkedArgumentBuffer& m_foundObjects;
1110     JSGlobalObject* m_globalObject;
1111 };
1112
1113 ObjectsWithBrokenIndexingFinder::ObjectsWithBrokenIndexingFinder(
1114     MarkedArgumentBuffer& foundObjects, JSGlobalObject* globalObject)
1115     : m_foundObjects(foundObjects)
1116     , m_globalObject(globalObject)
1117 {
1118 }
1119
1120 inline bool hasBrokenIndexing(JSObject* object)
1121 {
1122     // This will change if we have more indexing types.
1123     IndexingType type = object->indexingType();
1124     // This could be made obviously more efficient, but isn't made so right now, because
1125     // we expect this to be an unlikely slow path anyway.
1126     return hasUndecided(type) || hasInt32(type) || hasDouble(type) || hasContiguous(type) || hasArrayStorage(type);
1127 }
1128
1129 inline void ObjectsWithBrokenIndexingFinder::visit(JSCell* cell)
1130 {
1131     if (!cell->isObject())
1132         return;
1133
1134     JSObject* object = asObject(cell);
1135
1136     // Run this filter first, since it's cheap, and ought to filter out a lot of objects.
1137     if (!hasBrokenIndexing(object))
1138         return;
1139
1140     // We only want to have a bad time in the affected global object, not in the entire
1141     // VM. But we have to be careful, since there may be objects that claim to belong to
1142     // a different global object that have prototypes from our global object.
1143     bool foundGlobalObject = false;
1144     for (JSObject* current = object; ;) {
1145         if (current->globalObject() == m_globalObject) {
1146             foundGlobalObject = true;
1147             break;
1148         }
1149
1150         JSValue prototypeValue = current->getPrototypeDirect();
1151         if (prototypeValue.isNull())
1152             break;
1153         current = asObject(prototypeValue);
1154     }
1155     if (!foundGlobalObject)
1156         return;
1157
1158     m_foundObjects.append(object);
1159 }
1160
1161 IterationStatus ObjectsWithBrokenIndexingFinder::operator()(HeapCell* cell, HeapCell::Kind kind) const
1162 {
1163     if (kind == HeapCell::JSCell) {
1164         // FIXME: This const_cast exists because this isn't a C++ lambda.
1165         // https://bugs.webkit.org/show_bug.cgi?id=159644
1166         const_cast<ObjectsWithBrokenIndexingFinder*>(this)->visit(static_cast<JSCell*>(cell));
1167     }
1168     return IterationStatus::Continue;
1169 }
1170
1171 } // end private namespace for helpers for JSGlobalObject::haveABadTime()
1172
1173 void JSGlobalObject::haveABadTime(VM& vm)
1174 {
1175     ASSERT(&vm == &this->vm());
1176
1177     if (isHavingABadTime())
1178         return;
1179
1180     // Make sure that all allocations or indexed storage transitions that are inlining
1181     // the assumption that it's safe to transition to a non-SlowPut array storage don't
1182     // do so anymore.
1183     m_havingABadTimeWatchpoint->fireAll(vm, "Having a bad time");
1184     ASSERT(isHavingABadTime()); // The watchpoint is what tells us that we're having a bad time.
1185
1186     // Make sure that all JSArray allocations that load the appropriate structure from
1187     // this object now load a structure that uses SlowPut.
1188     for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
1189         m_arrayStructureForIndexingShapeDuringAllocation[i].set(vm, this, originalArrayStructureForIndexingType(ArrayWithSlowPutArrayStorage));
1190
1191     // Same for any special array structures.
1192     Structure* slowPutStructure;
1193     slowPutStructure = createRegExpMatchesArraySlowPutStructure(vm, this);
1194     m_regExpMatchesArrayStructure.set(vm, this, slowPutStructure);
1195     slowPutStructure = ClonedArguments::createSlowPutStructure(vm, this, m_objectPrototype.get());
1196     m_clonedArgumentsStructure.set(vm, this, slowPutStructure);
1197
1198     // Make sure that all objects that have indexed storage switch to the slow kind of
1199     // indexed storage.
1200     MarkedArgumentBuffer foundObjects; // Use MarkedArgumentBuffer because switchToSlowPutArrayStorage() may GC.
1201     ObjectsWithBrokenIndexingFinder finder(foundObjects, this);
1202     {
1203         HeapIterationScope iterationScope(vm.heap);
1204         vm.heap.objectSpace().forEachLiveCell(iterationScope, finder);
1205     }
1206     while (!foundObjects.isEmpty()) {
1207         JSObject* object = asObject(foundObjects.last());
1208         foundObjects.removeLast();
1209         ASSERT(hasBrokenIndexing(object));
1210         object->switchToSlowPutArrayStorage(vm);
1211     }
1212 }
1213
1214 // Set prototype, and also insert the object prototype at the end of the chain.
1215 void JSGlobalObject::resetPrototype(VM& vm, JSValue prototype)
1216 {
1217     setPrototypeDirect(vm, prototype);
1218
1219     JSObject* oldLastInPrototypeChain = lastInPrototypeChain(this);
1220     JSObject* objectPrototype = m_objectPrototype.get();
1221     if (oldLastInPrototypeChain != objectPrototype)
1222         oldLastInPrototypeChain->setPrototypeDirect(vm, objectPrototype);
1223
1224     // Whenever we change the prototype of the global object, we need to create a new JSProxy with the correct prototype.
1225     setGlobalThis(vm, JSProxy::create(vm, JSProxy::createStructure(vm, this, prototype, PureForwardingProxyType), this));
1226 }
1227
1228 void JSGlobalObject::visitChildren(JSCell* cell, SlotVisitor& visitor)
1229 {
1230     JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
1231     ASSERT_GC_OBJECT_INHERITS(thisObject, info());
1232     Base::visitChildren(thisObject, visitor);
1233
1234     visitor.append(thisObject->m_globalThis);
1235
1236     visitor.append(thisObject->m_globalLexicalEnvironment);
1237     visitor.append(thisObject->m_globalScopeExtension);
1238     visitor.append(thisObject->m_globalCallee);
1239     visitor.append(thisObject->m_regExpConstructor);
1240     visitor.append(thisObject->m_errorConstructor);
1241     visitor.append(thisObject->m_nativeErrorPrototypeStructure);
1242     visitor.append(thisObject->m_nativeErrorStructure);
1243     thisObject->m_evalErrorConstructor.visit(visitor);
1244     visitor.append(thisObject->m_rangeErrorConstructor);
1245     thisObject->m_referenceErrorConstructor.visit(visitor);
1246     thisObject->m_syntaxErrorConstructor.visit(visitor);
1247     visitor.append(thisObject->m_typeErrorConstructor);
1248     thisObject->m_URIErrorConstructor.visit(visitor);
1249     visitor.append(thisObject->m_objectConstructor);
1250     visitor.append(thisObject->m_promiseConstructor);
1251
1252     visitor.append(thisObject->m_nullGetterFunction);
1253     visitor.append(thisObject->m_nullSetterFunction);
1254
1255     visitor.append(thisObject->m_parseIntFunction);
1256     visitor.append(thisObject->m_parseFloatFunction);
1257     visitor.append(thisObject->m_evalFunction);
1258     visitor.append(thisObject->m_callFunction);
1259     visitor.append(thisObject->m_applyFunction);
1260     visitor.append(thisObject->m_throwTypeErrorFunction);
1261     thisObject->m_arrayProtoToStringFunction.visit(visitor);
1262     thisObject->m_arrayProtoValuesFunction.visit(visitor);
1263     thisObject->m_initializePromiseFunction.visit(visitor);
1264     thisObject->m_iteratorProtocolFunction.visit(visitor);
1265     thisObject->m_promiseResolveFunction.visit(visitor);
1266     visitor.append(thisObject->m_objectProtoValueOfFunction);
1267     visitor.append(thisObject->m_newPromiseCapabilityFunction);
1268     visitor.append(thisObject->m_functionProtoHasInstanceSymbolFunction);
1269     thisObject->m_throwTypeErrorGetterSetter.visit(visitor);
1270     visitor.append(thisObject->m_throwTypeErrorArgumentsCalleeAndCallerGetterSetter);
1271     visitor.append(thisObject->m_moduleLoader);
1272
1273     visitor.append(thisObject->m_objectPrototype);
1274     visitor.append(thisObject->m_functionPrototype);
1275     visitor.append(thisObject->m_arrayPrototype);
1276     visitor.append(thisObject->m_errorPrototype);
1277     visitor.append(thisObject->m_iteratorPrototype);
1278     visitor.append(thisObject->m_generatorFunctionPrototype);
1279     visitor.append(thisObject->m_generatorPrototype);
1280     visitor.append(thisObject->m_asyncFunctionPrototype);
1281     visitor.append(thisObject->m_asyncGeneratorPrototype);
1282     visitor.append(thisObject->m_asyncIteratorPrototype);
1283     visitor.append(thisObject->m_asyncGeneratorFunctionPrototype);
1284     visitor.append(thisObject->m_moduleLoaderPrototype);
1285
1286     thisObject->m_debuggerScopeStructure.visit(visitor);
1287     thisObject->m_withScopeStructure.visit(visitor);
1288     visitor.append(thisObject->m_strictEvalActivationStructure);
1289     visitor.append(thisObject->m_lexicalEnvironmentStructure);
1290     thisObject->m_moduleEnvironmentStructure.visit(visitor);
1291     visitor.append(thisObject->m_directArgumentsStructure);
1292     visitor.append(thisObject->m_scopedArgumentsStructure);
1293     visitor.append(thisObject->m_clonedArgumentsStructure);
1294     visitor.append(thisObject->m_objectStructureForObjectConstructor);
1295     for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
1296         visitor.append(thisObject->m_originalArrayStructureForIndexingShape[i]);
1297     for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
1298         visitor.append(thisObject->m_arrayStructureForIndexingShapeDuringAllocation[i]);
1299     thisObject->m_callbackConstructorStructure.visit(visitor);
1300     thisObject->m_callbackFunctionStructure.visit(visitor);
1301     thisObject->m_callbackObjectStructure.visit(visitor);
1302 #if JSC_OBJC_API_ENABLED
1303     thisObject->m_objcCallbackFunctionStructure.visit(visitor);
1304     thisObject->m_objcWrapperObjectStructure.visit(visitor);
1305 #endif
1306     thisObject->m_nullPrototypeObjectStructure.visit(visitor);
1307     visitor.append(thisObject->m_errorStructure);
1308     visitor.append(thisObject->m_calleeStructure);
1309     visitor.append(thisObject->m_functionStructure);
1310     thisObject->m_customGetterSetterFunctionStructure.visit(visitor);
1311     thisObject->m_boundFunctionStructure.visit(visitor);
1312     visitor.append(thisObject->m_getterSetterStructure);
1313     thisObject->m_nativeStdFunctionStructure.visit(visitor);
1314     thisObject->m_namedFunctionStructure.visit(visitor);
1315     visitor.append(thisObject->m_symbolObjectStructure);
1316     visitor.append(thisObject->m_regExpStructure);
1317     visitor.append(thisObject->m_generatorFunctionStructure);
1318     visitor.append(thisObject->m_asyncFunctionStructure);
1319     visitor.append(thisObject->m_asyncGeneratorFunctionStructure);
1320     visitor.append(thisObject->m_iteratorResultObjectStructure);
1321     visitor.append(thisObject->m_regExpMatchesArrayStructure);
1322     visitor.append(thisObject->m_moduleRecordStructure);
1323     visitor.append(thisObject->m_moduleNamespaceObjectStructure);
1324     visitor.append(thisObject->m_dollarVMStructure);
1325     visitor.append(thisObject->m_proxyObjectStructure);
1326     visitor.append(thisObject->m_callableProxyObjectStructure);
1327     visitor.append(thisObject->m_proxyRevokeStructure);
1328     visitor.append(thisObject->m_moduleLoaderStructure);
1329
1330     visitor.append(thisObject->m_arrayBufferPrototype);
1331     visitor.append(thisObject->m_arrayBufferStructure);
1332     visitor.append(thisObject->m_sharedArrayBufferPrototype);
1333     visitor.append(thisObject->m_sharedArrayBufferStructure);
1334
1335 #define VISIT_SIMPLE_TYPE(CapitalName, lowerName, properName, instanceType, jsName, prototypeBase) \
1336     visitor.append(thisObject->m_ ## lowerName ## Prototype); \
1337     visitor.append(thisObject->m_ ## properName ## Structure); \
1338
1339     FOR_EACH_SIMPLE_BUILTIN_TYPE(VISIT_SIMPLE_TYPE)
1340     FOR_EACH_BUILTIN_DERIVED_ITERATOR_TYPE(VISIT_SIMPLE_TYPE)
1341
1342 #if ENABLE(WEBASSEMBLY)
1343     visitor.append(thisObject->m_webAssemblyStructure);
1344     visitor.append(thisObject->m_webAssemblyModuleRecordStructure);
1345     visitor.append(thisObject->m_webAssemblyFunctionStructure);
1346     visitor.append(thisObject->m_webAssemblyWrapperFunctionStructure);
1347     visitor.append(thisObject->m_webAssemblyToJSCalleeStructure);
1348     FOR_EACH_WEBASSEMBLY_CONSTRUCTOR_TYPE(VISIT_SIMPLE_TYPE)
1349 #endif // ENABLE(WEBASSEMBLY)
1350
1351 #undef VISIT_SIMPLE_TYPE
1352
1353 #define VISIT_LAZY_TYPE(CapitalName, lowerName, properName, instanceType, jsName, prototypeBase) \
1354     thisObject->m_ ## properName ## Structure.visit(visitor);
1355
1356     FOR_EACH_LAZY_BUILTIN_TYPE(VISIT_LAZY_TYPE)
1357
1358 #undef VISIT_LAZY_TYPE
1359
1360     for (unsigned i = NUMBER_OF_TYPED_ARRAY_TYPES; i--;)
1361         thisObject->lazyTypedArrayStructure(indexToTypedArrayType(i)).visit(visitor);
1362
1363     visitor.append(thisObject->m_speciesGetterSetter);
1364     thisObject->m_typedArrayProto.visit(visitor);
1365     thisObject->m_typedArraySuperConstructor.visit(visitor);
1366 }
1367
1368 JSValue JSGlobalObject::toThis(JSCell*, ExecState* exec, ECMAMode ecmaMode)
1369 {
1370     if (ecmaMode == StrictMode)
1371         return jsUndefined();
1372     return exec->globalThisValue();
1373 }
1374
1375 ExecState* JSGlobalObject::globalExec()
1376 {
1377     return CallFrame::create(m_globalCallFrame);
1378 }
1379
1380 void JSGlobalObject::addStaticGlobals(GlobalPropertyInfo* globals, int count)
1381 {
1382     ScopeOffset startOffset = addVariables(count, jsUndefined());
1383
1384     for (int i = 0; i < count; ++i) {
1385         GlobalPropertyInfo& global = globals[i];
1386         ASSERT(global.attributes & DontDelete);
1387
1388         WatchpointSet* watchpointSet = nullptr;
1389         WriteBarrierBase<Unknown>* variable = nullptr;
1390         {
1391             ConcurrentJSLocker locker(symbolTable()->m_lock);
1392             ScopeOffset offset = symbolTable()->takeNextScopeOffset(locker);
1393             RELEASE_ASSERT(offset == startOffset + i);
1394             SymbolTableEntry newEntry(VarOffset(offset), global.attributes);
1395             newEntry.prepareToWatch();
1396             watchpointSet = newEntry.watchpointSet();
1397             symbolTable()->add(locker, global.identifier.impl(), WTFMove(newEntry));
1398             variable = &variableAt(offset);
1399         }
1400         symbolTablePutTouchWatchpointSet(vm(), this, global.identifier, global.value, variable, watchpointSet);
1401     }
1402 }
1403
1404 bool JSGlobalObject::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
1405 {
1406     if (Base::getOwnPropertySlot(object, exec, propertyName, slot))
1407         return true;
1408     return symbolTableGet(jsCast<JSGlobalObject*>(object), propertyName, slot);
1409 }
1410
1411 void JSGlobalObject::clearRareData(JSCell* cell)
1412 {
1413     jsCast<JSGlobalObject*>(cell)->m_rareData = nullptr;
1414 }
1415
1416 void slowValidateCell(JSGlobalObject* globalObject)
1417 {
1418     RELEASE_ASSERT(globalObject->isGlobalObject());
1419     ASSERT_GC_OBJECT_INHERITS(globalObject, JSGlobalObject::info());
1420 }
1421
1422 void JSGlobalObject::setRemoteDebuggingEnabled(bool enabled)
1423 {
1424 #if ENABLE(REMOTE_INSPECTOR)
1425     m_inspectorDebuggable->setRemoteDebuggingAllowed(enabled);
1426 #else
1427     UNUSED_PARAM(enabled);
1428 #endif
1429 }
1430
1431 bool JSGlobalObject::remoteDebuggingEnabled() const
1432 {
1433 #if ENABLE(REMOTE_INSPECTOR)
1434     return m_inspectorDebuggable->remoteDebuggingAllowed();
1435 #else
1436     return false;
1437 #endif
1438 }
1439
1440 void JSGlobalObject::setName(const String& name)
1441 {
1442     m_name = name;
1443
1444 #if ENABLE(REMOTE_INSPECTOR)
1445     m_inspectorDebuggable->update();
1446 #endif
1447 }
1448
1449 # if ENABLE(INTL)
1450 const HashSet<String>& JSGlobalObject::intlCollatorAvailableLocales()
1451 {
1452     if (m_intlCollatorAvailableLocales.isEmpty()) {
1453         int32_t count = ucol_countAvailable();
1454         for (int32_t i = 0; i < count; ++i) {
1455             String locale(ucol_getAvailable(i));
1456             convertICULocaleToBCP47LanguageTag(locale);
1457             m_intlCollatorAvailableLocales.add(locale);
1458         }
1459     }
1460     return m_intlCollatorAvailableLocales;
1461 }
1462
1463 const HashSet<String>& JSGlobalObject::intlDateTimeFormatAvailableLocales()
1464 {
1465     if (m_intlDateTimeFormatAvailableLocales.isEmpty()) {
1466         int32_t count = udat_countAvailable();
1467         for (int32_t i = 0; i < count; ++i) {
1468             String locale(udat_getAvailable(i));
1469             convertICULocaleToBCP47LanguageTag(locale);
1470             m_intlDateTimeFormatAvailableLocales.add(locale);
1471         }
1472     }
1473     return m_intlDateTimeFormatAvailableLocales;
1474 }
1475
1476 const HashSet<String>& JSGlobalObject::intlNumberFormatAvailableLocales()
1477 {
1478     if (m_intlNumberFormatAvailableLocales.isEmpty()) {
1479         int32_t count = unum_countAvailable();
1480         for (int32_t i = 0; i < count; ++i) {
1481             String locale(unum_getAvailable(i));
1482             convertICULocaleToBCP47LanguageTag(locale);
1483             m_intlNumberFormatAvailableLocales.add(locale);
1484         }
1485     }
1486     return m_intlNumberFormatAvailableLocales;
1487 }
1488 #endif // ENABLE(INTL)
1489
1490 void JSGlobalObject::queueMicrotask(Ref<Microtask>&& task)
1491 {
1492     if (globalObjectMethodTable()->queueTaskToEventLoop) {
1493         globalObjectMethodTable()->queueTaskToEventLoop(*this, WTFMove(task));
1494         return;
1495     }
1496
1497     vm().queueMicrotask(*this, WTFMove(task));
1498 }
1499
1500 bool JSGlobalObject::hasDebugger() const
1501 {
1502     return m_debugger;
1503 }
1504
1505 bool JSGlobalObject::hasInteractiveDebugger() const
1506 {
1507     return m_debugger && m_debugger->isInteractivelyDebugging();
1508 }
1509
1510 JSGlobalObject* JSGlobalObject::create(VM& vm, Structure* structure)
1511 {
1512     JSGlobalObject* globalObject = new (NotNull, allocateCell<JSGlobalObject>(vm.heap)) JSGlobalObject(vm, structure);
1513     globalObject->finishCreation(vm);
1514     return globalObject;
1515 }
1516
1517 void JSGlobalObject::finishCreation(VM& vm)
1518 {
1519     Base::finishCreation(vm);
1520     structure()->setGlobalObject(vm, this);
1521     m_runtimeFlags = m_globalObjectMethodTable->javaScriptRuntimeFlags(this);
1522     init(vm);
1523     setGlobalThis(vm, JSProxy::create(vm, JSProxy::createStructure(vm, this, getPrototypeDirect(), PureForwardingProxyType), this));
1524 }
1525
1526 void JSGlobalObject::finishCreation(VM& vm, JSObject* thisValue)
1527 {
1528     Base::finishCreation(vm);
1529     structure()->setGlobalObject(vm, this);
1530     m_runtimeFlags = m_globalObjectMethodTable->javaScriptRuntimeFlags(this);
1531     init(vm);
1532     setGlobalThis(vm, thisValue);
1533 }
1534
1535 } // namespace JSC