| /* |
| * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved. |
| * Copyright (C) 2008 Cameron Zwarich (cwzwarich@uwaterloo.ca) |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "JSGlobalObject.h" |
| |
| #include "Arguments.h" |
| #include "ArrayConstructor.h" |
| #include "ArrayPrototype.h" |
| #include "BooleanConstructor.h" |
| #include "BooleanPrototype.h" |
| #include "CodeBlock.h" |
| #include "CodeCache.h" |
| #include "DateConstructor.h" |
| #include "DatePrototype.h" |
| #include "Debugger.h" |
| #include "Error.h" |
| #include "ErrorConstructor.h" |
| #include "ErrorPrototype.h" |
| #include "FunctionConstructor.h" |
| #include "FunctionPrototype.h" |
| #include "GetterSetter.h" |
| #include "Interpreter.h" |
| #include "JSAPIWrapperObject.h" |
| #include "JSActivation.h" |
| #include "JSBoundFunction.h" |
| #include "JSCallbackConstructor.h" |
| #include "JSCallbackFunction.h" |
| #include "JSCallbackObject.h" |
| #include "JSFunction.h" |
| #include "JSGlobalObjectFunctions.h" |
| #include "JSLock.h" |
| #include "JSNameScope.h" |
| #include "JSONObject.h" |
| #include "JSWithScope.h" |
| #include "LegacyProfiler.h" |
| #include "Lookup.h" |
| #include "MathObject.h" |
| #include "NameConstructor.h" |
| #include "NameInstance.h" |
| #include "NamePrototype.h" |
| #include "NativeErrorConstructor.h" |
| #include "NativeErrorPrototype.h" |
| #include "NumberConstructor.h" |
| #include "NumberPrototype.h" |
| #include "ObjCCallbackFunction.h" |
| #include "ObjectConstructor.h" |
| #include "ObjectPrototype.h" |
| #include "Operations.h" |
| #include "ParserError.h" |
| #include "RegExpConstructor.h" |
| #include "RegExpMatchesArray.h" |
| #include "RegExpObject.h" |
| #include "RegExpPrototype.h" |
| #include "StrictEvalActivation.h" |
| #include "StringConstructor.h" |
| #include "StringPrototype.h" |
| |
| #include "JSGlobalObject.lut.h" |
| |
| namespace JSC { |
| |
| const ClassInfo JSGlobalObject::s_info = { "GlobalObject", &Base::s_info, 0, ExecState::globalObjectTable, CREATE_METHOD_TABLE(JSGlobalObject) }; |
| |
| const GlobalObjectMethodTable JSGlobalObject::s_globalObjectMethodTable = { &allowsAccessFrom, &supportsProfiling, &supportsRichSourceInfo, &shouldInterruptScript, &javaScriptExperimentsEnabled }; |
| |
| /* Source for JSGlobalObject.lut.h |
| @begin globalObjectTable |
| parseInt globalFuncParseInt DontEnum|Function 2 |
| parseFloat globalFuncParseFloat DontEnum|Function 1 |
| isNaN globalFuncIsNaN DontEnum|Function 1 |
| isFinite globalFuncIsFinite DontEnum|Function 1 |
| escape globalFuncEscape DontEnum|Function 1 |
| unescape globalFuncUnescape DontEnum|Function 1 |
| decodeURI globalFuncDecodeURI DontEnum|Function 1 |
| decodeURIComponent globalFuncDecodeURIComponent DontEnum|Function 1 |
| encodeURI globalFuncEncodeURI DontEnum|Function 1 |
| encodeURIComponent globalFuncEncodeURIComponent DontEnum|Function 1 |
| @end |
| */ |
| |
| JSGlobalObject::JSGlobalObject(VM& vm, Structure* structure, const GlobalObjectMethodTable* globalObjectMethodTable) |
| : Base(vm, structure, 0) |
| , m_masqueradesAsUndefinedWatchpoint(adoptRef(new WatchpointSet(InitializedWatching))) |
| , m_havingABadTimeWatchpoint(adoptRef(new WatchpointSet(InitializedWatching))) |
| , m_weakRandom(Options::forceWeakRandomSeed() ? Options::forcedWeakRandomSeed() : static_cast<unsigned>(randomNumber() * (std::numeric_limits<unsigned>::max() + 1.0))) |
| , m_evalEnabled(true) |
| , m_globalObjectMethodTable(globalObjectMethodTable ? globalObjectMethodTable : &s_globalObjectMethodTable) |
| { |
| } |
| |
| JSGlobalObject::~JSGlobalObject() |
| { |
| if (m_debugger) |
| m_debugger->detach(this); |
| |
| if (LegacyProfiler* profiler = vm().enabledProfiler()) |
| profiler->stopProfiling(this); |
| } |
| |
| void JSGlobalObject::destroy(JSCell* cell) |
| { |
| static_cast<JSGlobalObject*>(cell)->JSGlobalObject::~JSGlobalObject(); |
| } |
| |
| void JSGlobalObject::setGlobalThis(VM& vm, JSObject* globalThis) |
| { |
| m_globalThis.set(vm, this, globalThis); |
| } |
| |
| void JSGlobalObject::init(JSObject* thisValue) |
| { |
| ASSERT(vm().apiLock().currentThreadIsHoldingLock()); |
| |
| setGlobalThis(vm(), thisValue); |
| JSGlobalObject::globalExec()->init(0, 0, this, CallFrame::noCaller(), 0, 0); |
| |
| m_debugger = 0; |
| |
| reset(prototype()); |
| } |
| |
| void JSGlobalObject::put(JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot) |
| { |
| JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell); |
| ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject)); |
| |
| if (symbolTablePut(thisObject, exec, propertyName, value, slot.isStrictMode())) |
| return; |
| Base::put(thisObject, exec, propertyName, value, slot); |
| } |
| |
| void JSGlobalObject::putDirectVirtual(JSObject* object, ExecState* exec, PropertyName propertyName, JSValue value, unsigned attributes) |
| { |
| JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object); |
| ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject)); |
| |
| if (symbolTablePutWithAttributes(thisObject, exec->vm(), propertyName, value, attributes)) |
| return; |
| |
| JSValue valueBefore = thisObject->getDirect(exec->vm(), propertyName); |
| PutPropertySlot slot; |
| Base::put(thisObject, exec, propertyName, value, slot); |
| if (!valueBefore) { |
| JSValue valueAfter = thisObject->getDirect(exec->vm(), propertyName); |
| if (valueAfter) |
| JSObject::putDirectVirtual(thisObject, exec, propertyName, valueAfter, attributes); |
| } |
| } |
| |
| bool JSGlobalObject::defineOwnProperty(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor, bool shouldThrow) |
| { |
| JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object); |
| PropertySlot slot; |
| // silently ignore attempts to add accessors aliasing vars. |
| if (descriptor.isAccessorDescriptor() && symbolTableGet(thisObject, propertyName, slot)) |
| return false; |
| return Base::defineOwnProperty(thisObject, exec, propertyName, descriptor, shouldThrow); |
| } |
| |
| |
| static inline JSObject* lastInPrototypeChain(JSObject* object) |
| { |
| JSObject* o = object; |
| while (o->prototype().isObject()) |
| o = asObject(o->prototype()); |
| return o; |
| } |
| |
| void JSGlobalObject::reset(JSValue prototype) |
| { |
| ExecState* exec = JSGlobalObject::globalExec(); |
| |
| m_functionPrototype.set(exec->vm(), this, FunctionPrototype::create(exec, this, FunctionPrototype::createStructure(exec->vm(), this, jsNull()))); // The real prototype will be set once ObjectPrototype is created. |
| m_functionStructure.set(exec->vm(), this, JSFunction::createStructure(exec->vm(), this, m_functionPrototype.get())); |
| m_boundFunctionStructure.set(exec->vm(), this, JSBoundFunction::createStructure(exec->vm(), this, m_functionPrototype.get())); |
| m_namedFunctionStructure.set(exec->vm(), this, Structure::addPropertyTransition(exec->vm(), m_functionStructure.get(), exec->vm().propertyNames->name, DontDelete | ReadOnly | DontEnum, 0, m_functionNameOffset)); |
| m_internalFunctionStructure.set(exec->vm(), this, InternalFunction::createStructure(exec->vm(), this, m_functionPrototype.get())); |
| JSFunction* callFunction = 0; |
| JSFunction* applyFunction = 0; |
| m_functionPrototype->addFunctionProperties(exec, this, &callFunction, &applyFunction); |
| m_callFunction.set(exec->vm(), this, callFunction); |
| m_applyFunction.set(exec->vm(), this, applyFunction); |
| m_objectPrototype.set(exec->vm(), this, ObjectPrototype::create(exec, this, ObjectPrototype::createStructure(exec->vm(), this, jsNull()))); |
| GetterSetter* protoAccessor = GetterSetter::create(exec); |
| protoAccessor->setGetter(exec->vm(), JSFunction::create(exec, this, 0, String(), globalFuncProtoGetter)); |
| protoAccessor->setSetter(exec->vm(), JSFunction::create(exec, this, 0, String(), globalFuncProtoSetter)); |
| m_objectPrototype->putDirectAccessor(exec, exec->propertyNames().underscoreProto, protoAccessor, Accessor | DontEnum); |
| m_functionPrototype->structure()->setPrototypeWithoutTransition(exec->vm(), m_objectPrototype.get()); |
| |
| m_nameScopeStructure.set(exec->vm(), this, JSNameScope::createStructure(exec->vm(), this, jsNull())); |
| m_activationStructure.set(exec->vm(), this, JSActivation::createStructure(exec->vm(), this, jsNull())); |
| m_strictEvalActivationStructure.set(exec->vm(), this, StrictEvalActivation::createStructure(exec->vm(), this, jsNull())); |
| m_withScopeStructure.set(exec->vm(), this, JSWithScope::createStructure(exec->vm(), this, jsNull())); |
| |
| m_nullPrototypeObjectStructure.set(exec->vm(), this, JSFinalObject::createStructure(vm(), this, jsNull(), JSFinalObject::defaultInlineCapacity())); |
| |
| m_callbackFunctionStructure.set(exec->vm(), this, JSCallbackFunction::createStructure(exec->vm(), this, m_functionPrototype.get())); |
| m_argumentsStructure.set(exec->vm(), this, Arguments::createStructure(exec->vm(), this, m_objectPrototype.get())); |
| m_callbackConstructorStructure.set(exec->vm(), this, JSCallbackConstructor::createStructure(exec->vm(), this, m_objectPrototype.get())); |
| m_callbackObjectStructure.set(exec->vm(), this, JSCallbackObject<JSDestructibleObject>::createStructure(exec->vm(), this, m_objectPrototype.get())); |
| #if JSC_OBJC_API_ENABLED |
| m_objcCallbackFunctionStructure.set(exec->vm(), this, ObjCCallbackFunction::createStructure(exec->vm(), this, m_functionPrototype.get())); |
| m_objcWrapperObjectStructure.set(exec->vm(), this, JSCallbackObject<JSAPIWrapperObject>::createStructure(exec->vm(), this, m_objectPrototype.get())); |
| #endif |
| |
| m_arrayPrototype.set(exec->vm(), this, ArrayPrototype::create(exec, this, ArrayPrototype::createStructure(exec->vm(), this, m_objectPrototype.get()))); |
| |
| m_originalArrayStructureForIndexingShape[UndecidedShape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithUndecided)); |
| m_originalArrayStructureForIndexingShape[Int32Shape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithInt32)); |
| m_originalArrayStructureForIndexingShape[DoubleShape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithDouble)); |
| m_originalArrayStructureForIndexingShape[ContiguousShape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithContiguous)); |
| m_originalArrayStructureForIndexingShape[ArrayStorageShape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithArrayStorage)); |
| m_originalArrayStructureForIndexingShape[SlowPutArrayStorageShape >> IndexingShapeShift].set(exec->vm(), this, JSArray::createStructure(exec->vm(), this, m_arrayPrototype.get(), ArrayWithSlowPutArrayStorage)); |
| for (unsigned i = 0; i < NumberOfIndexingShapes; ++i) |
| m_arrayStructureForIndexingShapeDuringAllocation[i] = m_originalArrayStructureForIndexingShape[i]; |
| |
| m_regExpMatchesArrayStructure.set(exec->vm(), this, RegExpMatchesArray::createStructure(exec->vm(), this, m_arrayPrototype.get())); |
| |
| m_stringPrototype.set(exec->vm(), this, StringPrototype::create(exec, this, StringPrototype::createStructure(exec->vm(), this, m_objectPrototype.get()))); |
| m_stringObjectStructure.set(exec->vm(), this, StringObject::createStructure(exec->vm(), this, m_stringPrototype.get())); |
| |
| m_booleanPrototype.set(exec->vm(), this, BooleanPrototype::create(exec, this, BooleanPrototype::createStructure(exec->vm(), this, m_objectPrototype.get()))); |
| m_booleanObjectStructure.set(exec->vm(), this, BooleanObject::createStructure(exec->vm(), this, m_booleanPrototype.get())); |
| |
| m_numberPrototype.set(exec->vm(), this, NumberPrototype::create(exec, this, NumberPrototype::createStructure(exec->vm(), this, m_objectPrototype.get()))); |
| m_numberObjectStructure.set(exec->vm(), this, NumberObject::createStructure(exec->vm(), this, m_numberPrototype.get())); |
| |
| m_datePrototype.set(exec->vm(), this, DatePrototype::create(exec, this, DatePrototype::createStructure(exec->vm(), this, m_objectPrototype.get()))); |
| m_dateStructure.set(exec->vm(), this, DateInstance::createStructure(exec->vm(), this, m_datePrototype.get())); |
| |
| RegExp* emptyRegex = RegExp::create(exec->vm(), "", NoFlags); |
| |
| m_regExpPrototype.set(exec->vm(), this, RegExpPrototype::create(exec, this, RegExpPrototype::createStructure(exec->vm(), this, m_objectPrototype.get()), emptyRegex)); |
| m_regExpStructure.set(exec->vm(), this, RegExpObject::createStructure(exec->vm(), this, m_regExpPrototype.get())); |
| |
| m_errorPrototype.set(exec->vm(), this, ErrorPrototype::create(exec, this, ErrorPrototype::createStructure(exec->vm(), this, m_objectPrototype.get()))); |
| m_errorStructure.set(exec->vm(), this, ErrorInstance::createStructure(exec->vm(), this, m_errorPrototype.get())); |
| |
| // Constructors |
| |
| JSCell* objectConstructor = ObjectConstructor::create(exec, this, ObjectConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_objectPrototype.get()); |
| JSCell* functionConstructor = FunctionConstructor::create(exec, this, FunctionConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_functionPrototype.get()); |
| JSCell* arrayConstructor = ArrayConstructor::create(exec, this, ArrayConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_arrayPrototype.get()); |
| JSCell* stringConstructor = StringConstructor::create(exec, this, StringConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_stringPrototype.get()); |
| JSCell* booleanConstructor = BooleanConstructor::create(exec, this, BooleanConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_booleanPrototype.get()); |
| JSCell* numberConstructor = NumberConstructor::create(exec, this, NumberConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_numberPrototype.get()); |
| JSCell* dateConstructor = DateConstructor::create(exec, this, DateConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_datePrototype.get()); |
| |
| m_regExpConstructor.set(exec->vm(), this, RegExpConstructor::create(exec, this, RegExpConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_regExpPrototype.get())); |
| |
| m_errorConstructor.set(exec->vm(), this, ErrorConstructor::create(exec, this, ErrorConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), m_errorPrototype.get())); |
| |
| Structure* nativeErrorPrototypeStructure = NativeErrorPrototype::createStructure(exec->vm(), this, m_errorPrototype.get()); |
| Structure* nativeErrorStructure = NativeErrorConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()); |
| m_evalErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("EvalError"))); |
| m_rangeErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("RangeError"))); |
| m_referenceErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("ReferenceError"))); |
| m_syntaxErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("SyntaxError"))); |
| m_typeErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("TypeError"))); |
| m_URIErrorConstructor.set(exec->vm(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, ASCIILiteral("URIError"))); |
| |
| m_objectPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, objectConstructor, DontEnum); |
| m_functionPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, functionConstructor, DontEnum); |
| m_arrayPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, arrayConstructor, DontEnum); |
| m_booleanPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, booleanConstructor, DontEnum); |
| m_stringPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, stringConstructor, DontEnum); |
| m_numberPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, numberConstructor, DontEnum); |
| m_datePrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, dateConstructor, DontEnum); |
| m_regExpPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, m_regExpConstructor.get(), DontEnum); |
| m_errorPrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, m_errorConstructor.get(), DontEnum); |
| |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().Object, objectConstructor, DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().Function, functionConstructor, DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().Array, arrayConstructor, DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().Boolean, booleanConstructor, DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().String, stringConstructor, DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().Number, numberConstructor, DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().Date, dateConstructor, DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().RegExp, m_regExpConstructor.get(), DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().Error, m_errorConstructor.get(), DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().EvalError, m_evalErrorConstructor.get(), DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().RangeError, m_rangeErrorConstructor.get(), DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().ReferenceError, m_referenceErrorConstructor.get(), DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().SyntaxError, m_syntaxErrorConstructor.get(), DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().TypeError, m_typeErrorConstructor.get(), DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().URIError, m_URIErrorConstructor.get(), DontEnum); |
| |
| m_evalFunction.set(exec->vm(), this, JSFunction::create(exec, this, 1, exec->propertyNames().eval.string(), globalFuncEval)); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().eval, m_evalFunction.get(), DontEnum); |
| |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().JSON, JSONObject::create(exec, this, JSONObject::createStructure(exec->vm(), this, m_objectPrototype.get())), DontEnum); |
| putDirectWithoutTransition(exec->vm(), exec->propertyNames().Math, MathObject::create(exec, this, MathObject::createStructure(exec->vm(), this, m_objectPrototype.get())), DontEnum); |
| |
| GlobalPropertyInfo staticGlobals[] = { |
| GlobalPropertyInfo(exec->propertyNames().NaN, jsNaN(), DontEnum | DontDelete | ReadOnly), |
| GlobalPropertyInfo(exec->propertyNames().Infinity, jsNumber(std::numeric_limits<double>::infinity()), DontEnum | DontDelete | ReadOnly), |
| GlobalPropertyInfo(exec->propertyNames().undefinedKeyword, jsUndefined(), DontEnum | DontDelete | ReadOnly) |
| }; |
| addStaticGlobals(staticGlobals, WTF_ARRAY_LENGTH(staticGlobals)); |
| |
| m_specialPointers[Special::CallFunction] = m_callFunction.get(); |
| m_specialPointers[Special::ApplyFunction] = m_applyFunction.get(); |
| m_specialPointers[Special::ObjectConstructor] = objectConstructor; |
| m_specialPointers[Special::ArrayConstructor] = arrayConstructor; |
| |
| if (m_experimentsEnabled) { |
| NamePrototype* privateNamePrototype = NamePrototype::create(exec, NamePrototype::createStructure(exec->vm(), this, m_objectPrototype.get())); |
| m_privateNameStructure.set(exec->vm(), this, NameInstance::createStructure(exec->vm(), this, privateNamePrototype)); |
| |
| JSCell* privateNameConstructor = NameConstructor::create(exec, this, NameConstructor::createStructure(exec->vm(), this, m_functionPrototype.get()), privateNamePrototype); |
| privateNamePrototype->putDirectWithoutTransition(exec->vm(), exec->propertyNames().constructor, privateNameConstructor, DontEnum); |
| putDirectWithoutTransition(exec->vm(), Identifier(exec, "Name"), privateNameConstructor, DontEnum); |
| } |
| |
| resetPrototype(exec->vm(), prototype); |
| } |
| |
| // Private namespace for helpers for JSGlobalObject::haveABadTime() |
| namespace { |
| |
| class ObjectsWithBrokenIndexingFinder : public MarkedBlock::VoidFunctor { |
| public: |
| ObjectsWithBrokenIndexingFinder(MarkedArgumentBuffer&, JSGlobalObject*); |
| void operator()(JSCell*); |
| |
| private: |
| MarkedArgumentBuffer& m_foundObjects; |
| JSGlobalObject* m_globalObject; |
| }; |
| |
| ObjectsWithBrokenIndexingFinder::ObjectsWithBrokenIndexingFinder( |
| MarkedArgumentBuffer& foundObjects, JSGlobalObject* globalObject) |
| : m_foundObjects(foundObjects) |
| , m_globalObject(globalObject) |
| { |
| } |
| |
| inline bool hasBrokenIndexing(JSObject* object) |
| { |
| // This will change if we have more indexing types. |
| IndexingType type = object->structure()->indexingType(); |
| // This could be made obviously more efficient, but isn't made so right now, because |
| // we expect this to be an unlikely slow path anyway. |
| return hasUndecided(type) || hasInt32(type) || hasDouble(type) || hasContiguous(type) || hasFastArrayStorage(type); |
| } |
| |
| void ObjectsWithBrokenIndexingFinder::operator()(JSCell* cell) |
| { |
| if (!cell->isObject()) |
| return; |
| |
| JSObject* object = asObject(cell); |
| |
| // Run this filter first, since it's cheap, and ought to filter out a lot of objects. |
| if (!hasBrokenIndexing(object)) |
| return; |
| |
| // We only want to have a bad time in the affected global object, not in the entire |
| // VM. But we have to be careful, since there may be objects that claim to belong to |
| // a different global object that have prototypes from our global object. |
| bool foundGlobalObject = false; |
| for (JSObject* current = object; ;) { |
| if (current->globalObject() == m_globalObject) { |
| foundGlobalObject = true; |
| break; |
| } |
| |
| JSValue prototypeValue = current->prototype(); |
| if (prototypeValue.isNull()) |
| break; |
| current = asObject(prototypeValue); |
| } |
| if (!foundGlobalObject) |
| return; |
| |
| m_foundObjects.append(object); |
| } |
| |
| } // end private namespace for helpers for JSGlobalObject::haveABadTime() |
| |
| void JSGlobalObject::haveABadTime(VM& vm) |
| { |
| ASSERT(&vm == &this->vm()); |
| |
| if (isHavingABadTime()) |
| return; |
| |
| // Make sure that all allocations or indexed storage transitions that are inlining |
| // the assumption that it's safe to transition to a non-SlowPut array storage don't |
| // do so anymore. |
| m_havingABadTimeWatchpoint->notifyWrite(); |
| ASSERT(isHavingABadTime()); // The watchpoint is what tells us that we're having a bad time. |
| |
| // Make sure that all JSArray allocations that load the appropriate structure from |
| // this object now load a structure that uses SlowPut. |
| for (unsigned i = 0; i < NumberOfIndexingShapes; ++i) |
| m_arrayStructureForIndexingShapeDuringAllocation[i].set(vm, this, originalArrayStructureForIndexingType(ArrayWithSlowPutArrayStorage)); |
| |
| // Make sure that all objects that have indexed storage switch to the slow kind of |
| // indexed storage. |
| MarkedArgumentBuffer foundObjects; // Use MarkedArgumentBuffer because switchToSlowPutArrayStorage() may GC. |
| ObjectsWithBrokenIndexingFinder finder(foundObjects, this); |
| vm.heap.objectSpace().forEachLiveCell(finder); |
| while (!foundObjects.isEmpty()) { |
| JSObject* object = asObject(foundObjects.last()); |
| foundObjects.removeLast(); |
| ASSERT(hasBrokenIndexing(object)); |
| object->switchToSlowPutArrayStorage(vm); |
| } |
| } |
| |
| bool JSGlobalObject::arrayPrototypeChainIsSane() |
| { |
| return !hasIndexedProperties(m_arrayPrototype->structure()->indexingType()) |
| && m_arrayPrototype->prototype() == m_objectPrototype.get() |
| && !hasIndexedProperties(m_objectPrototype->structure()->indexingType()) |
| && m_objectPrototype->prototype().isNull(); |
| } |
| |
| void JSGlobalObject::createThrowTypeError(ExecState* exec) |
| { |
| JSFunction* thrower = JSFunction::create(exec, this, 0, String(), globalFuncThrowTypeError); |
| GetterSetter* getterSetter = GetterSetter::create(exec); |
| getterSetter->setGetter(exec->vm(), thrower); |
| getterSetter->setSetter(exec->vm(), thrower); |
| m_throwTypeErrorGetterSetter.set(exec->vm(), this, getterSetter); |
| } |
| |
| // Set prototype, and also insert the object prototype at the end of the chain. |
| void JSGlobalObject::resetPrototype(VM& vm, JSValue prototype) |
| { |
| setPrototype(vm, prototype); |
| |
| JSObject* oldLastInPrototypeChain = lastInPrototypeChain(this); |
| JSObject* objectPrototype = m_objectPrototype.get(); |
| if (oldLastInPrototypeChain != objectPrototype) |
| oldLastInPrototypeChain->setPrototype(vm, objectPrototype); |
| } |
| |
| void JSGlobalObject::visitChildren(JSCell* cell, SlotVisitor& visitor) |
| { |
| JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell); |
| ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info); |
| COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag); |
| ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren()); |
| Base::visitChildren(thisObject, visitor); |
| |
| visitor.append(&thisObject->m_globalThis); |
| |
| visitor.append(&thisObject->m_regExpConstructor); |
| visitor.append(&thisObject->m_errorConstructor); |
| visitor.append(&thisObject->m_evalErrorConstructor); |
| visitor.append(&thisObject->m_rangeErrorConstructor); |
| visitor.append(&thisObject->m_referenceErrorConstructor); |
| visitor.append(&thisObject->m_syntaxErrorConstructor); |
| visitor.append(&thisObject->m_typeErrorConstructor); |
| visitor.append(&thisObject->m_URIErrorConstructor); |
| |
| visitor.append(&thisObject->m_evalFunction); |
| visitor.append(&thisObject->m_callFunction); |
| visitor.append(&thisObject->m_applyFunction); |
| visitor.append(&thisObject->m_throwTypeErrorGetterSetter); |
| |
| visitor.append(&thisObject->m_objectPrototype); |
| visitor.append(&thisObject->m_functionPrototype); |
| visitor.append(&thisObject->m_arrayPrototype); |
| visitor.append(&thisObject->m_booleanPrototype); |
| visitor.append(&thisObject->m_stringPrototype); |
| visitor.append(&thisObject->m_numberPrototype); |
| visitor.append(&thisObject->m_datePrototype); |
| visitor.append(&thisObject->m_regExpPrototype); |
| visitor.append(&thisObject->m_errorPrototype); |
| |
| visitor.append(&thisObject->m_withScopeStructure); |
| visitor.append(&thisObject->m_strictEvalActivationStructure); |
| visitor.append(&thisObject->m_activationStructure); |
| visitor.append(&thisObject->m_nameScopeStructure); |
| visitor.append(&thisObject->m_argumentsStructure); |
| for (unsigned i = 0; i < NumberOfIndexingShapes; ++i) |
| visitor.append(&thisObject->m_originalArrayStructureForIndexingShape[i]); |
| for (unsigned i = 0; i < NumberOfIndexingShapes; ++i) |
| visitor.append(&thisObject->m_arrayStructureForIndexingShapeDuringAllocation[i]); |
| visitor.append(&thisObject->m_booleanObjectStructure); |
| visitor.append(&thisObject->m_callbackConstructorStructure); |
| visitor.append(&thisObject->m_callbackFunctionStructure); |
| visitor.append(&thisObject->m_callbackObjectStructure); |
| #if JSC_OBJC_API_ENABLED |
| visitor.append(&thisObject->m_objcCallbackFunctionStructure); |
| visitor.append(&thisObject->m_objcWrapperObjectStructure); |
| #endif |
| visitor.append(&thisObject->m_dateStructure); |
| visitor.append(&thisObject->m_nullPrototypeObjectStructure); |
| visitor.append(&thisObject->m_errorStructure); |
| visitor.append(&thisObject->m_functionStructure); |
| visitor.append(&thisObject->m_boundFunctionStructure); |
| visitor.append(&thisObject->m_namedFunctionStructure); |
| visitor.append(&thisObject->m_numberObjectStructure); |
| visitor.append(&thisObject->m_privateNameStructure); |
| visitor.append(&thisObject->m_regExpMatchesArrayStructure); |
| visitor.append(&thisObject->m_regExpStructure); |
| visitor.append(&thisObject->m_stringObjectStructure); |
| visitor.append(&thisObject->m_internalFunctionStructure); |
| } |
| |
| JSValue JSGlobalObject::toThis(JSCell*, ExecState* exec, ECMAMode ecmaMode) |
| { |
| if (ecmaMode == StrictMode) |
| return jsUndefined(); |
| return exec->globalThisValue(); |
| } |
| |
| ExecState* JSGlobalObject::globalExec() |
| { |
| return CallFrame::create(m_globalCallFrame + JSStack::CallFrameHeaderSize); |
| } |
| |
| void JSGlobalObject::addStaticGlobals(GlobalPropertyInfo* globals, int count) |
| { |
| addRegisters(count); |
| |
| for (int i = 0; i < count; ++i) { |
| GlobalPropertyInfo& global = globals[i]; |
| ASSERT(global.attributes & DontDelete); |
| |
| int index = symbolTable()->size(); |
| SymbolTableEntry newEntry(index, global.attributes); |
| symbolTable()->add(global.identifier.impl(), newEntry); |
| registerAt(index).set(vm(), this, global.value); |
| } |
| } |
| |
| bool JSGlobalObject::getOwnPropertySlot(JSCell* cell, ExecState* exec, PropertyName propertyName, PropertySlot& slot) |
| { |
| JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell); |
| if (getStaticFunctionSlot<Base>(exec, ExecState::globalObjectTable(exec), thisObject, propertyName, slot)) |
| return true; |
| return symbolTableGet(thisObject, propertyName, slot); |
| } |
| |
| bool JSGlobalObject::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, PropertyName propertyName, PropertyDescriptor& descriptor) |
| { |
| JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object); |
| if (getStaticFunctionDescriptor<Base>(exec, ExecState::globalObjectTable(exec), thisObject, propertyName, descriptor)) |
| return true; |
| return symbolTableGet(thisObject, propertyName, descriptor); |
| } |
| |
| void JSGlobalObject::clearRareData(JSCell* cell) |
| { |
| jsCast<JSGlobalObject*>(cell)->m_rareData.clear(); |
| } |
| |
| DynamicGlobalObjectScope::DynamicGlobalObjectScope(VM& vm, JSGlobalObject* dynamicGlobalObject) |
| : m_dynamicGlobalObjectSlot(vm.dynamicGlobalObject) |
| , m_savedDynamicGlobalObject(m_dynamicGlobalObjectSlot) |
| { |
| if (!m_dynamicGlobalObjectSlot) { |
| #if ENABLE(ASSEMBLER) |
| if (ExecutableAllocator::underMemoryPressure()) |
| vm.heap.deleteAllCompiledCode(); |
| #endif |
| |
| m_dynamicGlobalObjectSlot = dynamicGlobalObject; |
| |
| // Reset the date cache between JS invocations to force the VM |
| // to observe time zone changes. |
| vm.resetDateCache(); |
| } |
| // Clear the exception stack between entries |
| vm.clearExceptionStack(); |
| } |
| |
| void slowValidateCell(JSGlobalObject* globalObject) |
| { |
| RELEASE_ASSERT(globalObject->isGlobalObject()); |
| ASSERT_GC_OBJECT_INHERITS(globalObject, &JSGlobalObject::s_info); |
| } |
| |
| UnlinkedProgramCodeBlock* JSGlobalObject::createProgramCodeBlock(CallFrame* callFrame, ProgramExecutable* executable, JSObject** exception) |
| { |
| ParserError error; |
| JSParserStrictness strictness = executable->isStrictMode() ? JSParseStrict : JSParseNormal; |
| DebuggerMode debuggerMode = hasDebugger() ? DebuggerOn : DebuggerOff; |
| ProfilerMode profilerMode = hasProfiler() ? ProfilerOn : ProfilerOff; |
| UnlinkedProgramCodeBlock* unlinkedCode = vm().codeCache()->getProgramCodeBlock(vm(), executable, executable->source(), strictness, debuggerMode, profilerMode, error); |
| |
| if (hasDebugger()) |
| debugger()->sourceParsed(callFrame, executable->source().provider(), error.m_line, error.m_message); |
| |
| if (error.m_type != ParserError::ErrorNone) { |
| *exception = error.toErrorObject(this, executable->source()); |
| return 0; |
| } |
| |
| return unlinkedCode; |
| } |
| |
| UnlinkedEvalCodeBlock* JSGlobalObject::createEvalCodeBlock(CodeCache* cache, CallFrame* callFrame, JSScope* scope, EvalExecutable* executable, JSObject** exception) |
| { |
| ParserError error; |
| JSParserStrictness strictness = executable->isStrictMode() ? JSParseStrict : JSParseNormal; |
| DebuggerMode debuggerMode = hasDebugger() ? DebuggerOn : DebuggerOff; |
| ProfilerMode profilerMode = hasProfiler() ? ProfilerOn : ProfilerOff; |
| UnlinkedEvalCodeBlock* unlinkedCode = cache->getEvalCodeBlock(vm(), scope, executable, executable->source(), strictness, debuggerMode, profilerMode, error); |
| |
| if (hasDebugger()) |
| debugger()->sourceParsed(callFrame, executable->source().provider(), error.m_line, error.m_message); |
| |
| if (error.m_type != ParserError::ErrorNone) { |
| *exception = error.toErrorObject(this, executable->source()); |
| return 0; |
| } |
| |
| return unlinkedCode; |
| } |
| |
| } // namespace JSC |
