2c274c1a7d481c07df0d2beb3b2931a3907a5e66
[WebKit-https.git] / 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