Source/JavaScriptCore/runtime/JSGlobalObject.cpp

   1 /*
   2  * Copyright (C) 2007, 2008, 2009 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 Computer, 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 "Arguments.h"
  34 #include "ArgumentsIteratorConstructor.h"
  35 #include "ArgumentsIteratorPrototype.h"
  36 #include "ArrayConstructor.h"
  37 #include "ArrayIteratorConstructor.h"
  38 #include "ArrayIteratorPrototype.h"
  39 #include "ArrayPrototype.h"
  40 #include "BooleanConstructor.h"
  41 #include "BooleanPrototype.h"
  42 #include "CodeBlock.h"
  43 #include "CodeCache.h"
  44 #include "DateConstructor.h"
  45 #include "DatePrototype.h"
  46 #include "Debugger.h"
  47 #include "Error.h"
  48 #include "ErrorConstructor.h"
  49 #include "ErrorPrototype.h"
  50 #include "FunctionConstructor.h"
  51 #include "FunctionPrototype.h"
  52 #include "GetterSetter.h"
  53 #include "HeapIterationScope.h"
  54 #include "Interpreter.h"
  55 #include "JSAPIWrapperObject.h"
  56 #include "JSActivation.h"
  57 #include "JSArgumentsIterator.h"
  58 #include "JSArrayBuffer.h"
  59 #include "JSArrayBufferConstructor.h"
  60 #include "JSArrayBufferPrototype.h"
  61 #include "JSArrayIterator.h"
  62 #include "JSBoundFunction.h"
  63 #include "JSCallbackConstructor.h"
  64 #include "JSCallbackFunction.h"
  65 #include "JSCallbackObject.h"
  66 #include "JSDataView.h"
  67 #include "JSDataViewPrototype.h"
  68 #include "JSFunction.h"
  69 #include "JSGenericTypedArrayViewConstructorInlines.h"
  70 #include "JSGenericTypedArrayViewInlines.h"
  71 #include "JSGenericTypedArrayViewPrototypeInlines.h"
  72 #include "JSGlobalObjectFunctions.h"
  73 #include "JSLock.h"
  74 #include "JSMap.h"
  75 #include "JSMapIterator.h"
  76 #include "JSNameScope.h"
  77 #include "JSONObject.h"
  78 #include "JSSet.h"
  79 #include "JSSetIterator.h"
  80 #include "JSTypedArrayConstructors.h"
  81 #include "JSTypedArrayPrototypes.h"
  82 #include "JSTypedArrays.h"
  83 #include "JSWeakMap.h"
  84 #include "JSWithScope.h"
  85 #include "LegacyProfiler.h"
  86 #include "Lookup.h"
  87 #include "MapConstructor.h"
  88 #include "MapIteratorConstructor.h"
  89 #include "MapIteratorPrototype.h"
  90 #include "MapPrototype.h"
  91 #include "MathObject.h"
  92 #include "Microtask.h"
  93 #include "NameConstructor.h"
  94 #include "NameInstance.h"
  95 #include "NamePrototype.h"
  96 #include "NativeErrorConstructor.h"
  97 #include "NativeErrorPrototype.h"
  98 #include "NumberConstructor.h"
  99 #include "NumberPrototype.h"
 100 #include "ObjCCallbackFunction.h"
 101 #include "ObjectConstructor.h"
 102 #include "ObjectPrototype.h"
 103 #include "Operations.h"
 104 #include "ParserError.h"
 105 #include "RegExpConstructor.h"
 106 #include "RegExpMatchesArray.h"
 107 #include "RegExpObject.h"
 108 #include "RegExpPrototype.h"
 109 #include "SetConstructor.h"
 110 #include "SetIteratorConstructor.h"
 111 #include "SetIteratorPrototype.h"
 112 #include "SetPrototype.h"
 113 #include "StrictEvalActivation.h"
 114 #include "StringConstructor.h"
 115 #include "StringPrototype.h"
 116 #include "WeakMapConstructor.h"
 117 #include "WeakMapPrototype.h"
 118
 119 #if ENABLE(PROMISES)
 120 #include "JSPromise.h"
 121 #include "JSPromiseConstructor.h"
 122 #include "JSPromisePrototype.h"
 123 #endif // ENABLE(PROMISES)
 124
 125 #if ENABLE(REMOTE_INSPECTOR)
 126 #include "JSGlobalObjectDebuggable.h"
 127 #include "RemoteInspector.h"
 128 #endif
 129
 130 #include "JSGlobalObject.lut.h"
 131
 132 namespace JSC {
 133
 134 const ClassInfo JSGlobalObject::s_info = { "GlobalObject", &Base::s_info, 0, ExecState::globalObjectTable, CREATE_METHOD_TABLE(JSGlobalObject) };
 135
 136 const GlobalObjectMethodTable JSGlobalObject::s_globalObjectMethodTable = { &allowsAccessFrom, &supportsProfiling, &supportsRichSourceInfo, &shouldInterruptScript, &javaScriptExperimentsEnabled, 0, &shouldInterruptScriptBeforeTimeout };
 137
 138 /* Source for JSGlobalObject.lut.h
 139 @begin globalObjectTable
 140   parseInt              globalFuncParseInt              DontEnum|Function 2
 141   parseFloat            globalFuncParseFloat            DontEnum|Function 1
 142   isNaN                 globalFuncIsNaN                 DontEnum|Function 1
 143   isFinite              globalFuncIsFinite              DontEnum|Function 1
 144   escape                globalFuncEscape                DontEnum|Function 1
 145   unescape              globalFuncUnescape              DontEnum|Function 1
 146   decodeURI             globalFuncDecodeURI             DontEnum|Function 1
 147   decodeURIComponent    globalFuncDecodeURIComponent    DontEnum|Function 1
 148   encodeURI             globalFuncEncodeURI             DontEnum|Function 1
 149   encodeURIComponent    globalFuncEncodeURIComponent    DontEnum|Function 1
 150 @end
 151 */
 152
 153 JSGlobalObject::JSGlobalObject(VM& vm, Structure* structure, const GlobalObjectMethodTable* globalObjectMethodTable)
 154     : Base(vm, structure, 0)
 155     , m_masqueradesAsUndefinedWatchpoint(adoptRef(new WatchpointSet(IsWatched)))
 156     , m_havingABadTimeWatchpoint(adoptRef(new WatchpointSet(IsWatched)))
 157     , m_varInjectionWatchpoint(adoptRef(new WatchpointSet(IsWatched)))
 158     , m_weakRandom(Options::forceWeakRandomSeed() ? Options::forcedWeakRandomSeed() : static_cast<unsigned>(randomNumber() * (std::numeric_limits<unsigned>::max() + 1.0)))
 159     , m_evalEnabled(true)
 160     , m_globalObjectMethodTable(globalObjectMethodTable ? globalObjectMethodTable : &s_globalObjectMethodTable)
 161 {
 162 }
 163
 164 JSGlobalObject::~JSGlobalObject()
 165 {
 166     if (m_debugger)
 167         m_debugger->detach(this, Debugger::GlobalObjectIsDestructing);
 168
 169     if (LegacyProfiler* profiler = vm().enabledProfiler())
 170         profiler->stopProfiling(this);
 171 }
 172
 173 void JSGlobalObject::destroy(JSCell* cell)
 174 {
 175     static_cast<JSGlobalObject*>(cell)->JSGlobalObject::~JSGlobalObject();
 176 }
 177
 178 void JSGlobalObject::setGlobalThis(VM& vm, JSObject* globalThis)
 179 {
 180     m_globalThis.set(vm, this, globalThis);
 181 }
 182
 183 void JSGlobalObject::init(JSObject* thisValue)
 184 {
 185     ASSERT(vm().currentThreadIsHoldingAPILock());
 186
 187     setGlobalThis(vm(), thisValue);
 188     JSGlobalObject::globalExec()->init(0, 0, this, CallFrame::noCaller(), 0, 0);
 189
 190     m_debugger = 0;
 191
 192 #if ENABLE(REMOTE_INSPECTOR)
 193     m_inspectorDebuggable = std::make_unique<JSGlobalObjectDebuggable>(*this);
 194     m_inspectorDebuggable->init();
 195     m_inspectorDebuggable->setRemoteDebuggingAllowed(true);
 196 #endif
 197
 198     reset(prototype());
 199 }
 200
 201 void JSGlobalObject::put(JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
 202 {
 203     JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
 204     ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject));
 205
 206     if (symbolTablePut(thisObject, exec, propertyName, value, slot.isStrictMode()))
 207         return;
 208     Base::put(thisObject, exec, propertyName, value, slot);
 209 }
 210
 211 bool JSGlobalObject::defineOwnProperty(JSObject* object, ExecState* exec, PropertyName propertyName, const PropertyDescriptor& descriptor, bool shouldThrow)
 212 {
 213     JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
 214     PropertySlot slot(thisObject);
 215     // silently ignore attempts to add accessors aliasing vars.
 216     if (descriptor.isAccessorDescriptor() && symbolTableGet(thisObject, propertyName, slot))
 217         return false;
 218     return Base::defineOwnProperty(thisObject, exec, propertyName, descriptor, shouldThrow);
 219 }
 220
 221 JSGlobalObject::NewGlobalVar JSGlobalObject::addGlobalVar(const Identifier& ident, ConstantMode constantMode)
 222 {
 223     ConcurrentJITLocker locker(symbolTable()->m_lock);
 224     int index = symbolTable()->size(locker);
 225     SymbolTableEntry newEntry(index, (constantMode == IsConstant) ? ReadOnly : 0);
 226     if (constantMode == IsVariable)
 227         newEntry.prepareToWatch();
 228     SymbolTable::Map::AddResult result = symbolTable()->add(locker, ident.impl(), newEntry);
 229     if (result.isNewEntry)
 230         addRegisters(1);
 231     else
 232         index = result.iterator->value.getIndex();
 233     NewGlobalVar var;
 234     var.registerNumber = index;
 235     var.set = result.iterator->value.watchpointSet();
 236     return var;
 237 }
 238
 239 void JSGlobalObject::addFunction(ExecState* exec, const Identifier& propertyName, JSValue value)
 240 {
 241     removeDirect(exec->vm(), propertyName); // Newly declared functions overwrite existing properties.
 242     NewGlobalVar var = addGlobalVar(propertyName, IsVariable);
 243     registerAt(var.registerNumber).set(exec->vm(), this, value);
 244     if (var.set)
 245         var.set->notifyWrite(value);
 246 }
 247
 248 static inline JSObject* lastInPrototypeChain(JSObject* object)
 249 {
 250     JSObject* o = object;
 251     while (o->prototype().isObject())
 252         o = asObject(o->prototype());
 253     return o;
 254 }
 255
 256 void JSGlobalObject::reset(JSValue prototype)
 257 {
 258     ExecState* exec = JSGlobalObject::globalExec();
 259     VM& vm = exec->vm();
 260
 261     m_functionPrototype.set(vm, this, FunctionPrototype::create(vm, FunctionPrototype::createStructure(vm, this, jsNull()))); // The real prototype will be set once ObjectPrototype is created.
 262     m_functionStructure.set(vm, this, JSFunction::createStructure(vm, this, m_functionPrototype.get()));
 263     m_boundFunctionStructure.set(vm, this, JSBoundFunction::createStructure(vm, this, m_functionPrototype.get()));
 264     m_namedFunctionStructure.set(vm, this, Structure::addPropertyTransition(vm, m_functionStructure.get(), vm.propertyNames->name, DontDelete | ReadOnly | DontEnum, 0, m_functionNameOffset));
 265     m_internalFunctionStructure.set(vm, this, InternalFunction::createStructure(vm, this, m_functionPrototype.get()));
 266     JSFunction* callFunction = 0;
 267     JSFunction* applyFunction = 0;
 268     m_functionPrototype->addFunctionProperties(exec, this, &callFunction, &applyFunction);
 269     m_callFunction.set(vm, this, callFunction);
 270     m_applyFunction.set(vm, this, applyFunction);
 271     m_objectPrototype.set(vm, this, ObjectPrototype::create(vm, this, ObjectPrototype::createStructure(vm, this, jsNull())));
 272     GetterSetter* protoAccessor = GetterSetter::create(vm);
 273     protoAccessor->setGetter(vm, JSFunction::create(vm, this, 0, String(), globalFuncProtoGetter));
 274     protoAccessor->setSetter(vm, JSFunction::create(vm, this, 0, String(), globalFuncProtoSetter));
 275     m_objectPrototype->putDirectNonIndexAccessor(vm, vm.propertyNames->underscoreProto, protoAccessor, Accessor | DontEnum);
 276     m_functionPrototype->structure()->setPrototypeWithoutTransition(vm, m_objectPrototype.get());
 277
 278     m_typedArrays[toIndex(TypeInt8)].prototype.set(vm, this, JSInt8ArrayPrototype::create(vm, this, JSInt8ArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
 279     m_typedArrays[toIndex(TypeInt16)].prototype.set(vm, this, JSInt16ArrayPrototype::create(vm, this, JSInt16ArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
 280     m_typedArrays[toIndex(TypeInt32)].prototype.set(vm, this, JSInt32ArrayPrototype::create(vm, this, JSInt32ArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
 281     m_typedArrays[toIndex(TypeUint8)].prototype.set(vm, this, JSUint8ArrayPrototype::create(vm, this, JSUint8ArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
 282     m_typedArrays[toIndex(TypeUint8Clamped)].prototype.set(vm, this, JSUint8ClampedArrayPrototype::create(vm, this, JSUint8ClampedArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
 283     m_typedArrays[toIndex(TypeUint16)].prototype.set(vm, this, JSUint16ArrayPrototype::create(vm, this, JSUint16ArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
 284     m_typedArrays[toIndex(TypeUint32)].prototype.set(vm, this, JSUint32ArrayPrototype::create(vm, this, JSUint32ArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
 285     m_typedArrays[toIndex(TypeFloat32)].prototype.set(vm, this, JSFloat32ArrayPrototype::create(vm, this, JSFloat32ArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
 286     m_typedArrays[toIndex(TypeFloat64)].prototype.set(vm, this, JSFloat64ArrayPrototype::create(vm, this, JSFloat64ArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
 287     m_typedArrays[toIndex(TypeDataView)].prototype.set(vm, this, JSDataViewPrototype::create(vm, JSDataViewPrototype::createStructure(vm, this, m_objectPrototype.get())));
 288
 289     m_typedArrays[toIndex(TypeInt8)].structure.set(vm, this, JSInt8Array::createStructure(vm, this, m_typedArrays[toIndex(TypeInt8)].prototype.get()));
 290     m_typedArrays[toIndex(TypeInt16)].structure.set(vm, this, JSInt16Array::createStructure(vm, this, m_typedArrays[toIndex(TypeInt16)].prototype.get()));
 291     m_typedArrays[toIndex(TypeInt32)].structure.set(vm, this, JSInt32Array::createStructure(vm, this, m_typedArrays[toIndex(TypeInt32)].prototype.get()));
 292     m_typedArrays[toIndex(TypeUint8)].structure.set(vm, this, JSUint8Array::createStructure(vm, this, m_typedArrays[toIndex(TypeUint8)].prototype.get()));
 293     m_typedArrays[toIndex(TypeUint8Clamped)].structure.set(vm, this, JSUint8ClampedArray::createStructure(vm, this, m_typedArrays[toIndex(TypeUint8Clamped)].prototype.get()));
 294     m_typedArrays[toIndex(TypeUint16)].structure.set(vm, this, JSUint16Array::createStructure(vm, this, m_typedArrays[toIndex(TypeUint16)].prototype.get()));
 295     m_typedArrays[toIndex(TypeUint32)].structure.set(vm, this, JSUint32Array::createStructure(vm, this, m_typedArrays[toIndex(TypeUint32)].prototype.get()));
 296     m_typedArrays[toIndex(TypeFloat32)].structure.set(vm, this, JSFloat32Array::createStructure(vm, this, m_typedArrays[toIndex(TypeFloat32)].prototype.get()));
 297     m_typedArrays[toIndex(TypeFloat64)].structure.set(vm, this, JSFloat64Array::createStructure(vm, this, m_typedArrays[toIndex(TypeFloat64)].prototype.get()));
 298     m_typedArrays[toIndex(TypeDataView)].structure.set(vm, this, JSDataView::createStructure(vm, this, m_typedArrays[toIndex(TypeDataView)].prototype.get()));
 299
 300     m_nameScopeStructure.set(vm, this, JSNameScope::createStructure(vm, this, jsNull()));
 301     m_activationStructure.set(vm, this, JSActivation::createStructure(vm, this, jsNull()));
 302     m_strictEvalActivationStructure.set(vm, this, StrictEvalActivation::createStructure(vm, this, jsNull()));
 303     m_withScopeStructure.set(vm, this, JSWithScope::createStructure(vm, this, jsNull()));
 304
 305     m_nullPrototypeObjectStructure.set(vm, this, JSFinalObject::createStructure(vm, this, jsNull(), JSFinalObject::defaultInlineCapacity()));
 306
 307     m_callbackFunctionStructure.set(vm, this, JSCallbackFunction::createStructure(vm, this, m_functionPrototype.get()));
 308     m_argumentsStructure.set(vm, this, Arguments::createStructure(vm, this, m_objectPrototype.get()));
 309     m_callbackConstructorStructure.set(vm, this, JSCallbackConstructor::createStructure(vm, this, m_objectPrototype.get()));
 310     m_callbackObjectStructure.set(vm, this, JSCallbackObject<JSDestructibleObject>::createStructure(vm, this, m_objectPrototype.get()));
 311 #if JSC_OBJC_API_ENABLED
 312     m_objcCallbackFunctionStructure.set(vm, this, ObjCCallbackFunction::createStructure(vm, this, m_functionPrototype.get()));
 313     m_objcWrapperObjectStructure.set(vm, this, JSCallbackObject<JSAPIWrapperObject>::createStructure(vm, this, m_objectPrototype.get()));
 314 #endif
 315
 316     m_arrayPrototype.set(vm, this, ArrayPrototype::create(vm, this, ArrayPrototype::createStructure(vm, this, m_objectPrototype.get())));
 317
 318     m_originalArrayStructureForIndexingShape[UndecidedShape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithUndecided));
 319     m_originalArrayStructureForIndexingShape[Int32Shape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithInt32));
 320     m_originalArrayStructureForIndexingShape[DoubleShape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithDouble));
 321     m_originalArrayStructureForIndexingShape[ContiguousShape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithContiguous));
 322     m_originalArrayStructureForIndexingShape[ArrayStorageShape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithArrayStorage));
 323     m_originalArrayStructureForIndexingShape[SlowPutArrayStorageShape >> IndexingShapeShift].set(vm, this, JSArray::createStructure(vm, this, m_arrayPrototype.get(), ArrayWithSlowPutArrayStorage));
 324     for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
 325         m_arrayStructureForIndexingShapeDuringAllocation[i] = m_originalArrayStructureForIndexingShape[i];
 326
 327     m_regExpMatchesArrayStructure.set(vm, this, RegExpMatchesArray::createStructure(vm, this, m_arrayPrototype.get()));
 328
 329     RegExp* emptyRegex = RegExp::create(vm, "", NoFlags);
 330
 331     m_regExpPrototype.set(vm, this, RegExpPrototype::create(vm, RegExpPrototype::createStructure(vm, this, m_objectPrototype.get()), emptyRegex));
 332     m_regExpStructure.set(vm, this, RegExpObject::createStructure(vm, this, m_regExpPrototype.get()));
 333
 334 #if ENABLE(PROMISES)
 335     m_promisePrototype.set(vm, this, JSPromisePrototype::create(exec, this, JSPromisePrototype::createStructure(vm, this, m_objectPrototype.get())));
 336     m_promiseStructure.set(vm, this, JSPromise::createStructure(vm, this, m_promisePrototype.get()));
 337 #endif // ENABLE(PROMISES)
 338
 339 #define CREATE_PROTOTYPE_FOR_SIMPLE_TYPE(capitalName, lowerName, properName, instanceType, jsName) \
 340     m_ ## lowerName ## Prototype.set(vm, this, capitalName##Prototype::create(vm, this, capitalName##Prototype::createStructure(vm, this, m_objectPrototype.get()))); \
 341     m_ ## properName ## Structure.set(vm, this, instanceType::createStructure(vm, this, m_ ## lowerName ## Prototype.get()));
 342
 343     FOR_EACH_SIMPLE_BUILTIN_TYPE(CREATE_PROTOTYPE_FOR_SIMPLE_TYPE)
 344
 345 #undef CREATE_PROTOTYPE_FOR_SIMPLE_TYPE
 346
 347     // Constructors
 348
 349     JSCell* objectConstructor = ObjectConstructor::create(vm, ObjectConstructor::createStructure(vm, this, m_functionPrototype.get()), m_objectPrototype.get());
 350     JSCell* functionConstructor = FunctionConstructor::create(vm, FunctionConstructor::createStructure(vm, this, m_functionPrototype.get()), m_functionPrototype.get());
 351     JSCell* arrayConstructor = ArrayConstructor::create(vm, ArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_arrayPrototype.get());
 352
 353     m_regExpConstructor.set(vm, this, RegExpConstructor::create(vm, RegExpConstructor::createStructure(vm, this, m_functionPrototype.get()), m_regExpPrototype.get()));
 354
 355 #define CREATE_CONSTRUCTOR_FOR_SIMPLE_TYPE(capitalName, lowerName, properName, instanceType, jsName) \
 356     capitalName ## Constructor* lowerName ## Constructor = capitalName ## Constructor::create(vm, capitalName ## Constructor::createStructure(vm, this, m_functionPrototype.get()), m_ ## lowerName ## Prototype.get()); \
 357     m_ ## lowerName ## Prototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, lowerName ## Constructor, DontEnum); \
 358
 359     FOR_EACH_SIMPLE_BUILTIN_TYPE(CREATE_CONSTRUCTOR_FOR_SIMPLE_TYPE)
 360
 361 #undef CREATE_CONSTRUCTOR_FOR_SIMPLE_TYPE
 362
 363     m_errorConstructor.set(vm, this, errorConstructor);
 364
 365     Structure* nativeErrorPrototypeStructure = NativeErrorPrototype::createStructure(vm, this, m_errorPrototype.get());
 366     Structure* nativeErrorStructure = NativeErrorConstructor::createStructure(vm, this, m_functionPrototype.get());
 367     m_evalErrorConstructor.set(vm, this, NativeErrorConstructor::create(vm, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("EvalError")));
 368     m_rangeErrorConstructor.set(vm, this, NativeErrorConstructor::create(vm, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("RangeError")));
 369     m_referenceErrorConstructor.set(vm, this, NativeErrorConstructor::create(vm, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("ReferenceError")));
 370     m_syntaxErrorConstructor.set(vm, this, NativeErrorConstructor::create(vm, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("SyntaxError")));
 371     m_typeErrorConstructor.set(vm, this, NativeErrorConstructor::create(vm, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("TypeError")));
 372     m_URIErrorConstructor.set(vm, this, NativeErrorConstructor::create(vm, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("URIError")));
 373     m_promiseConstructor.set(vm, this, JSPromiseConstructor::create(vm, JSPromiseConstructor::createStructure(vm, this, m_functionPrototype.get()), m_promisePrototype.get()));
 374
 375     m_objectPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, objectConstructor, DontEnum);
 376     m_functionPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, functionConstructor, DontEnum);
 377     m_arrayPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, arrayConstructor, DontEnum);
 378     m_regExpPrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, m_regExpConstructor.get(), DontEnum);
 379 #if ENABLE(PROMISES)
 380     m_promisePrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, m_promiseConstructor.get(), DontEnum);
 381 #endif
 382
 383     putDirectWithoutTransition(vm, vm.propertyNames->Object, objectConstructor, DontEnum);
 384     putDirectWithoutTransition(vm, vm.propertyNames->Function, functionConstructor, DontEnum);
 385     putDirectWithoutTransition(vm, vm.propertyNames->Array, arrayConstructor, DontEnum);
 386     putDirectWithoutTransition(vm, vm.propertyNames->RegExp, m_regExpConstructor.get(), DontEnum);
 387     putDirectWithoutTransition(vm, vm.propertyNames->EvalError, m_evalErrorConstructor.get(), DontEnum);
 388     putDirectWithoutTransition(vm, vm.propertyNames->RangeError, m_rangeErrorConstructor.get(), DontEnum);
 389     putDirectWithoutTransition(vm, vm.propertyNames->ReferenceError, m_referenceErrorConstructor.get(), DontEnum);
 390     putDirectWithoutTransition(vm, vm.propertyNames->SyntaxError, m_syntaxErrorConstructor.get(), DontEnum);
 391     putDirectWithoutTransition(vm, vm.propertyNames->TypeError, m_typeErrorConstructor.get(), DontEnum);
 392     putDirectWithoutTransition(vm, vm.propertyNames->URIError, m_URIErrorConstructor.get(), DontEnum);
 393     putDirectWithoutTransition(vm, vm.propertyNames->Promise, m_promiseConstructor.get(), DontEnum);
 394
 395
 396 #define PUT_CONSTRUCTOR_FOR_SIMPLE_TYPE(capitalName, lowerName, properName, instanceType, jsName) \
 397     putDirectWithoutTransition(vm, vm.propertyNames-> jsName, lowerName ## Constructor, DontEnum); \
 398
 399     FOR_EACH_SIMPLE_BUILTIN_TYPE(PUT_CONSTRUCTOR_FOR_SIMPLE_TYPE)
 400
 401 #undef PUT_CONSTRUCTOR_FOR_SIMPLE_TYPE
 402     PrototypeMap& prototypeMap = vm.prototypeMap;
 403     Structure* iteratorResultStructure = prototypeMap.emptyObjectStructureForPrototype(m_objectPrototype.get(), JSFinalObject::defaultInlineCapacity());
 404     PropertyOffset offset;
 405     iteratorResultStructure = Structure::addPropertyTransition(vm, iteratorResultStructure, vm.propertyNames->done, 0, 0, offset);
 406     iteratorResultStructure = Structure::addPropertyTransition(vm, iteratorResultStructure, vm.propertyNames->value, 0, 0, offset);
 407     m_iteratorResultStructure.set(vm, this, iteratorResultStructure);
 408
 409     m_evalFunction.set(vm, this, JSFunction::create(vm, this, 1, vm.propertyNames->eval.string(), globalFuncEval));
 410     putDirectWithoutTransition(vm, vm.propertyNames->eval, m_evalFunction.get(), DontEnum);
 411
 412     putDirectWithoutTransition(vm, vm.propertyNames->JSON, JSONObject::create(vm, JSONObject::createStructure(vm, this, m_objectPrototype.get())), DontEnum);
 413     putDirectWithoutTransition(vm, vm.propertyNames->Math, MathObject::create(vm, this, MathObject::createStructure(vm, this, m_objectPrototype.get())), DontEnum);
 414
 415     std::array<InternalFunction*, NUMBER_OF_TYPED_ARRAY_TYPES> typedArrayConstructors;
 416     typedArrayConstructors[toIndex(TypeInt8)] = JSInt8ArrayConstructor::create(vm, JSInt8ArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_typedArrays[toIndex(TypeInt8)].prototype.get(), "Int8Array");
 417     typedArrayConstructors[toIndex(TypeInt16)] = JSInt16ArrayConstructor::create(vm, JSInt16ArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_typedArrays[toIndex(TypeInt16)].prototype.get(), "Int16Array");
 418     typedArrayConstructors[toIndex(TypeInt32)] = JSInt32ArrayConstructor::create(vm, JSInt32ArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_typedArrays[toIndex(TypeInt32)].prototype.get(), "Int32Array");
 419     typedArrayConstructors[toIndex(TypeUint8)] = JSUint8ArrayConstructor::create(vm, JSUint8ArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_typedArrays[toIndex(TypeUint8)].prototype.get(), "Uint8Array");
 420     typedArrayConstructors[toIndex(TypeUint8Clamped)] = JSUint8ClampedArrayConstructor::create(vm, JSUint8ClampedArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_typedArrays[toIndex(TypeUint8Clamped)].prototype.get(), "Uint8ClampedArray");
 421     typedArrayConstructors[toIndex(TypeUint16)] = JSUint16ArrayConstructor::create(vm, JSUint16ArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_typedArrays[toIndex(TypeUint16)].prototype.get(), "Uint16Array");
 422     typedArrayConstructors[toIndex(TypeUint32)] = JSUint32ArrayConstructor::create(vm, JSUint32ArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_typedArrays[toIndex(TypeUint32)].prototype.get(), "Uint32Array");
 423     typedArrayConstructors[toIndex(TypeFloat32)] = JSFloat32ArrayConstructor::create(vm, JSFloat32ArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_typedArrays[toIndex(TypeFloat32)].prototype.get(), "Float32Array");
 424     typedArrayConstructors[toIndex(TypeFloat64)] = JSFloat64ArrayConstructor::create(vm, JSFloat64ArrayConstructor::createStructure(vm, this, m_functionPrototype.get()), m_typedArrays[toIndex(TypeFloat64)].prototype.get(), "Float64Array");
 425     typedArrayConstructors[toIndex(TypeDataView)] = JSDataViewConstructor::create(vm, JSDataViewConstructor::createStructure(vm, this, m_functionPrototype.get()), m_typedArrays[toIndex(TypeDataView)].prototype.get(), "DataView");
 426
 427     for (unsigned typedArrayIndex = NUMBER_OF_TYPED_ARRAY_TYPES; typedArrayIndex--;) {
 428         m_typedArrays[typedArrayIndex].prototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, typedArrayConstructors[typedArrayIndex], DontEnum);
 429         putDirectWithoutTransition(vm, Identifier(exec, typedArrayConstructors[typedArrayIndex]->name(exec)), typedArrayConstructors[typedArrayIndex], DontEnum);
 430     }
 431
 432     GlobalPropertyInfo staticGlobals[] = {
 433         GlobalPropertyInfo(vm.propertyNames->NaN, jsNaN(), DontEnum | DontDelete | ReadOnly),
 434         GlobalPropertyInfo(vm.propertyNames->Infinity, jsNumber(std::numeric_limits<double>::infinity()), DontEnum | DontDelete | ReadOnly),
 435         GlobalPropertyInfo(vm.propertyNames->undefinedKeyword, jsUndefined(), DontEnum | DontDelete | ReadOnly)
 436     };
 437     addStaticGlobals(staticGlobals, WTF_ARRAY_LENGTH(staticGlobals));
 438
 439     m_specialPointers[Special::CallFunction] = m_callFunction.get();
 440     m_specialPointers[Special::ApplyFunction] = m_applyFunction.get();
 441     m_specialPointers[Special::ObjectConstructor] = objectConstructor;
 442     m_specialPointers[Special::ArrayConstructor] = arrayConstructor;
 443
 444     if (m_experimentsEnabled) {
 445         NamePrototype* privateNamePrototype = NamePrototype::create(exec, NamePrototype::createStructure(vm, this, m_objectPrototype.get()));
 446         m_privateNameStructure.set(vm, this, NameInstance::createStructure(vm, this, privateNamePrototype));
 447
 448         JSCell* privateNameConstructor = NameConstructor::create(vm, NameConstructor::createStructure(vm, this, m_functionPrototype.get()), privateNamePrototype);
 449         privateNamePrototype->putDirectWithoutTransition(vm, vm.propertyNames->constructor, privateNameConstructor, DontEnum);
 450         putDirectWithoutTransition(vm, Identifier(exec, "Name"), privateNameConstructor, DontEnum);
 451     }
 452
 453     resetPrototype(vm, prototype);
 454 }
 455
 456 // Private namespace for helpers for JSGlobalObject::haveABadTime()
 457 namespace {
 458
 459 class ObjectsWithBrokenIndexingFinder : public MarkedBlock::VoidFunctor {
 460 public:
 461     ObjectsWithBrokenIndexingFinder(MarkedArgumentBuffer&, JSGlobalObject*);
 462     void operator()(JSCell*);
 463
 464 private:
 465     MarkedArgumentBuffer& m_foundObjects;
 466     JSGlobalObject* m_globalObject;
 467 };
 468
 469 ObjectsWithBrokenIndexingFinder::ObjectsWithBrokenIndexingFinder(
 470     MarkedArgumentBuffer& foundObjects, JSGlobalObject* globalObject)
 471     : m_foundObjects(foundObjects)
 472     , m_globalObject(globalObject)
 473 {
 474 }
 475
 476 inline bool hasBrokenIndexing(JSObject* object)
 477 {
 478     // This will change if we have more indexing types.
 479     IndexingType type = object->structure()->indexingType();
 480     // This could be made obviously more efficient, but isn't made so right now, because
 481     // we expect this to be an unlikely slow path anyway.
 482     return hasUndecided(type) || hasInt32(type) || hasDouble(type) || hasContiguous(type) || hasFastArrayStorage(type);
 483 }
 484
 485 void ObjectsWithBrokenIndexingFinder::operator()(JSCell* cell)
 486 {
 487     if (!cell->isObject())
 488         return;
 489
 490     JSObject* object = asObject(cell);
 491
 492     // Run this filter first, since it's cheap, and ought to filter out a lot of objects.
 493     if (!hasBrokenIndexing(object))
 494         return;
 495
 496     // We only want to have a bad time in the affected global object, not in the entire
 497     // VM. But we have to be careful, since there may be objects that claim to belong to
 498     // a different global object that have prototypes from our global object.
 499     bool foundGlobalObject = false;
 500     for (JSObject* current = object; ;) {
 501         if (current->globalObject() == m_globalObject) {
 502             foundGlobalObject = true;
 503             break;
 504         }
 505
 506         JSValue prototypeValue = current->prototype();
 507         if (prototypeValue.isNull())
 508             break;
 509         current = asObject(prototypeValue);
 510     }
 511     if (!foundGlobalObject)
 512         return;
 513
 514     m_foundObjects.append(object);
 515 }
 516
 517 } // end private namespace for helpers for JSGlobalObject::haveABadTime()
 518
 519 void JSGlobalObject::haveABadTime(VM& vm)
 520 {
 521     ASSERT(&vm == &this->vm());
 522
 523     if (isHavingABadTime())
 524         return;
 525
 526     // Make sure that all allocations or indexed storage transitions that are inlining
 527     // the assumption that it's safe to transition to a non-SlowPut array storage don't
 528     // do so anymore.
 529     m_havingABadTimeWatchpoint->fireAll();
 530     ASSERT(isHavingABadTime()); // The watchpoint is what tells us that we're having a bad time.
 531
 532     // Make sure that all JSArray allocations that load the appropriate structure from
 533     // this object now load a structure that uses SlowPut.
 534     for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
 535         m_arrayStructureForIndexingShapeDuringAllocation[i].set(vm, this, originalArrayStructureForIndexingType(ArrayWithSlowPutArrayStorage));
 536
 537     // Make sure that all objects that have indexed storage switch to the slow kind of
 538     // indexed storage.
 539     MarkedArgumentBuffer foundObjects; // Use MarkedArgumentBuffer because switchToSlowPutArrayStorage() may GC.
 540     ObjectsWithBrokenIndexingFinder finder(foundObjects, this);
 541     {
 542         HeapIterationScope iterationScope(vm.heap);
 543         vm.heap.objectSpace().forEachLiveCell(iterationScope, finder);
 544     }
 545     while (!foundObjects.isEmpty()) {
 546         JSObject* object = asObject(foundObjects.last());
 547         foundObjects.removeLast();
 548         ASSERT(hasBrokenIndexing(object));
 549         object->switchToSlowPutArrayStorage(vm);
 550     }
 551 }
 552
 553 bool JSGlobalObject::objectPrototypeIsSane()
 554 {
 555     return !hasIndexedProperties(m_objectPrototype->structure()->indexingType())
 556         && m_objectPrototype->prototype().isNull();
 557 }
 558
 559 bool JSGlobalObject::arrayPrototypeChainIsSane()
 560 {
 561     return !hasIndexedProperties(m_arrayPrototype->structure()->indexingType())
 562         && m_arrayPrototype->prototype() == m_objectPrototype.get()
 563         && objectPrototypeIsSane();
 564 }
 565
 566 bool JSGlobalObject::stringPrototypeChainIsSane()
 567 {
 568     return !hasIndexedProperties(m_stringPrototype->structure()->indexingType())
 569         && m_stringPrototype->prototype() == m_objectPrototype.get()
 570         && objectPrototypeIsSane();
 571 }
 572
 573 void JSGlobalObject::createThrowTypeError(VM& vm)
 574 {
 575     JSFunction* thrower = JSFunction::create(vm, this, 0, String(), globalFuncThrowTypeError);
 576     GetterSetter* getterSetter = GetterSetter::create(vm);
 577     getterSetter->setGetter(vm, thrower);
 578     getterSetter->setSetter(vm, thrower);
 579     m_throwTypeErrorGetterSetter.set(vm, this, getterSetter);
 580 }
 581
 582 // Set prototype, and also insert the object prototype at the end of the chain.
 583 void JSGlobalObject::resetPrototype(VM& vm, JSValue prototype)
 584 {
 585     setPrototype(vm, prototype);
 586
 587     JSObject* oldLastInPrototypeChain = lastInPrototypeChain(this);
 588     JSObject* objectPrototype = m_objectPrototype.get();
 589     if (oldLastInPrototypeChain != objectPrototype)
 590         oldLastInPrototypeChain->setPrototype(vm, objectPrototype);
 591 }
 592
 593 void JSGlobalObject::visitChildren(JSCell* cell, SlotVisitor& visitor)
 594 {
 595     JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
 596     ASSERT_GC_OBJECT_INHERITS(thisObject, info());
 597     COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
 598     ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
 599     Base::visitChildren(thisObject, visitor);
 600
 601     visitor.append(&thisObject->m_globalThis);
 602
 603     visitor.append(&thisObject->m_regExpConstructor);
 604     visitor.append(&thisObject->m_errorConstructor);
 605     visitor.append(&thisObject->m_evalErrorConstructor);
 606     visitor.append(&thisObject->m_rangeErrorConstructor);
 607     visitor.append(&thisObject->m_referenceErrorConstructor);
 608     visitor.append(&thisObject->m_syntaxErrorConstructor);
 609     visitor.append(&thisObject->m_typeErrorConstructor);
 610     visitor.append(&thisObject->m_URIErrorConstructor);
 611     visitor.append(&thisObject->m_promiseConstructor);
 612
 613     visitor.append(&thisObject->m_evalFunction);
 614     visitor.append(&thisObject->m_callFunction);
 615     visitor.append(&thisObject->m_applyFunction);
 616     visitor.append(&thisObject->m_throwTypeErrorGetterSetter);
 617
 618     visitor.append(&thisObject->m_objectPrototype);
 619     visitor.append(&thisObject->m_functionPrototype);
 620     visitor.append(&thisObject->m_arrayPrototype);
 621     visitor.append(&thisObject->m_errorPrototype);
 622 #if ENABLE(PROMISES)
 623     visitor.append(&thisObject->m_promisePrototype);
 624 #endif
 625
 626     visitor.append(&thisObject->m_withScopeStructure);
 627     visitor.append(&thisObject->m_strictEvalActivationStructure);
 628     visitor.append(&thisObject->m_activationStructure);
 629     visitor.append(&thisObject->m_nameScopeStructure);
 630     visitor.append(&thisObject->m_argumentsStructure);
 631     for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
 632         visitor.append(&thisObject->m_originalArrayStructureForIndexingShape[i]);
 633     for (unsigned i = 0; i < NumberOfIndexingShapes; ++i)
 634         visitor.append(&thisObject->m_arrayStructureForIndexingShapeDuringAllocation[i]);
 635     visitor.append(&thisObject->m_booleanObjectStructure);
 636     visitor.append(&thisObject->m_callbackConstructorStructure);
 637     visitor.append(&thisObject->m_callbackFunctionStructure);
 638     visitor.append(&thisObject->m_callbackObjectStructure);
 639 #if JSC_OBJC_API_ENABLED
 640     visitor.append(&thisObject->m_objcCallbackFunctionStructure);
 641     visitor.append(&thisObject->m_objcWrapperObjectStructure);
 642 #endif
 643     visitor.append(&thisObject->m_nullPrototypeObjectStructure);
 644     visitor.append(&thisObject->m_errorStructure);
 645     visitor.append(&thisObject->m_functionStructure);
 646     visitor.append(&thisObject->m_boundFunctionStructure);
 647     visitor.append(&thisObject->m_namedFunctionStructure);
 648     visitor.append(&thisObject->m_privateNameStructure);
 649     visitor.append(&thisObject->m_regExpMatchesArrayStructure);
 650     visitor.append(&thisObject->m_regExpStructure);
 651     visitor.append(&thisObject->m_internalFunctionStructure);
 652
 653 #if ENABLE(PROMISES)
 654     visitor.append(&thisObject->m_promiseStructure);
 655 #endif // ENABLE(PROMISES)
 656
 657 #define VISIT_SIMPLE_TYPE(CapitalName, lowerName, properName, instanceType, jsName) \
 658     visitor.append(&thisObject->m_ ## lowerName ## Prototype); \
 659     visitor.append(&thisObject->m_ ## properName ## Structure); \
 660
 661     FOR_EACH_SIMPLE_BUILTIN_TYPE(VISIT_SIMPLE_TYPE)
 662
 663 #undef VISIT_SIMPLE_TYPE
 664
 665     for (unsigned i = NUMBER_OF_TYPED_ARRAY_TYPES; i--;) {
 666         visitor.append(&thisObject->m_typedArrays[i].prototype);
 667         visitor.append(&thisObject->m_typedArrays[i].structure);
 668     }
 669 }
 670
 671 JSValue JSGlobalObject::toThis(JSCell*, ExecState* exec, ECMAMode ecmaMode)
 672 {
 673     if (ecmaMode == StrictMode)
 674         return jsUndefined();
 675     return exec->globalThisValue();
 676 }
 677
 678 ExecState* JSGlobalObject::globalExec()
 679 {
 680     return CallFrame::create(m_globalCallFrame);
 681 }
 682
 683 void JSGlobalObject::addStaticGlobals(GlobalPropertyInfo* globals, int count)
 684 {
 685     addRegisters(count);
 686
 687     for (int i = 0; i < count; ++i) {
 688         GlobalPropertyInfo& global = globals[i];
 689         ASSERT(global.attributes & DontDelete);
 690
 691         int index = symbolTable()->size();
 692         SymbolTableEntry newEntry(index, global.attributes);
 693         symbolTable()->add(global.identifier.impl(), newEntry);
 694         registerAt(index).set(vm(), this, global.value);
 695     }
 696 }
 697
 698 bool JSGlobalObject::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
 699 {
 700     JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
 701     if (getStaticFunctionSlot<Base>(exec, ExecState::globalObjectTable(exec->vm()), thisObject, propertyName, slot))
 702         return true;
 703     return symbolTableGet(thisObject, propertyName, slot);
 704 }
 705
 706 void JSGlobalObject::clearRareData(JSCell* cell)
 707 {
 708     jsCast<JSGlobalObject*>(cell)->m_rareData.clear();
 709 }
 710
 711 void slowValidateCell(JSGlobalObject* globalObject)
 712 {
 713     RELEASE_ASSERT(globalObject->isGlobalObject());
 714     ASSERT_GC_OBJECT_INHERITS(globalObject, JSGlobalObject::info());
 715 }
 716
 717 UnlinkedProgramCodeBlock* JSGlobalObject::createProgramCodeBlock(CallFrame* callFrame, ProgramExecutable* executable, JSObject** exception)
 718 {
 719     ParserError error;
 720     JSParserStrictness strictness = executable->isStrictMode() ? JSParseStrict : JSParseNormal;
 721     DebuggerMode debuggerMode = hasDebugger() ? DebuggerOn : DebuggerOff;
 722     ProfilerMode profilerMode = hasProfiler() ? ProfilerOn : ProfilerOff;
 723     UnlinkedProgramCodeBlock* unlinkedCodeBlock = vm().codeCache()->getProgramCodeBlock(vm(), executable, executable->source(), strictness, debuggerMode, profilerMode, error);
 724
 725     if (hasDebugger())
 726         debugger()->sourceParsed(callFrame, executable->source().provider(), error.m_line, error.m_message);
 727
 728     if (error.m_type != ParserError::ErrorNone) {
 729         *exception = error.toErrorObject(this, executable->source());
 730         return 0;
 731     }
 732
 733     return unlinkedCodeBlock;
 734 }
 735
 736 UnlinkedEvalCodeBlock* JSGlobalObject::createEvalCodeBlock(CallFrame* callFrame, EvalExecutable* executable)
 737 {
 738     ParserError error;
 739     JSParserStrictness strictness = executable->isStrictMode() ? JSParseStrict : JSParseNormal;
 740     DebuggerMode debuggerMode = hasDebugger() ? DebuggerOn : DebuggerOff;
 741     ProfilerMode profilerMode = hasProfiler() ? ProfilerOn : ProfilerOff;
 742     UnlinkedEvalCodeBlock* unlinkedCodeBlock = vm().codeCache()->getEvalCodeBlock(vm(), executable, executable->source(), strictness, debuggerMode, profilerMode, error);
 743
 744     if (hasDebugger())
 745         debugger()->sourceParsed(callFrame, executable->source().provider(), error.m_line, error.m_message);
 746
 747     if (error.m_type != ParserError::ErrorNone) {
 748         throwVMError(callFrame, error.toErrorObject(this, executable->source()));
 749         return 0;
 750     }
 751
 752     return unlinkedCodeBlock;
 753 }
 754
 755 void JSGlobalObject::setRemoteDebuggingEnabled(bool enabled)
 756 {
 757 #if ENABLE(REMOTE_INSPECTOR)
 758     m_inspectorDebuggable->setRemoteDebuggingAllowed(enabled);
 759 #else
 760     UNUSED_PARAM(enabled);
 761 #endif
 762 }
 763
 764 bool JSGlobalObject::remoteDebuggingEnabled() const
 765 {
 766 #if ENABLE(REMOTE_INSPECTOR)
 767     return m_inspectorDebuggable->remoteDebuggingAllowed();
 768 #else
 769     return false;
 770 #endif
 771 }
 772
 773 void JSGlobalObject::setName(const String& name)
 774 {
 775     m_name = name;
 776
 777 #if ENABLE(REMOTE_INSPECTOR)
 778     m_inspectorDebuggable->update();
 779 #endif
 780 }
 781
 782 void JSGlobalObject::queueMicrotask(PassRefPtr<Microtask> task)
 783 {
 784     if (globalObjectMethodTable()->queueTaskToEventLoop)
 785         globalObjectMethodTable()->queueTaskToEventLoop(this, task);
 786     else
 787         WTFLogAlways("ERROR: Event loop not supported.");
 788 }
 789
 790 } // namespace JSC