]> git.saurik.com Git - apple/javascriptcore.git/blobdiff - runtime/JSGlobalObject.cpp
JavaScriptCore-1097.13.tar.gz
[apple/javascriptcore.git] / runtime / JSGlobalObject.cpp
index a71624f33c468a2c2e5c0d1864085aa1069ffe77..dc68bdec7b2b769c6856fb69be13a05a62aea220 100644 (file)
 #include "CodeBlock.h"
 #include "DateConstructor.h"
 #include "DatePrototype.h"
+#include "Error.h"
 #include "ErrorConstructor.h"
 #include "ErrorPrototype.h"
 #include "FunctionConstructor.h"
 #include "FunctionPrototype.h"
+#include "GetterSetter.h"
+#include "JSBoundFunction.h"
 #include "JSFunction.h"
 #include "JSGlobalObjectFunctions.h"
 #include "JSLock.h"
 
 namespace JSC {
 
-const ClassInfo JSGlobalObject::s_info = { "GlobalObject", &JSVariableObject::s_info, 0, ExecState::globalObjectTable };
+const ClassInfo JSGlobalObject::s_info = { "GlobalObject", &JSVariableObject::s_info, 0, ExecState::globalObjectTable, CREATE_METHOD_TABLE(JSGlobalObject) };
+
+const GlobalObjectMethodTable JSGlobalObject::s_globalObjectMethodTable = { &allowsAccessFrom, &supportsProfiling, &supportsRichSourceInfo, &shouldInterruptScript
+    , &shouldInterruptScriptBeforeTimeout
+};
 
 /* Source for JSGlobalObject.lut.h
 @begin globalObjectTable
@@ -106,8 +113,6 @@ template <typename T> static inline void visitIfNeeded(SlotVisitor& visitor, Wri
 
 JSGlobalObject::~JSGlobalObject()
 {
-    ASSERT(JSLock::currentThreadIsHoldingLock());
-
     if (m_debugger)
         m_debugger->detach(this);
 
@@ -117,63 +122,64 @@ JSGlobalObject::~JSGlobalObject()
     }
 }
 
+void JSGlobalObject::destroy(JSCell* cell)
+{
+    jsCast<JSGlobalObject*>(cell)->JSGlobalObject::~JSGlobalObject();
+}
+
 void JSGlobalObject::init(JSObject* thisValue)
 {
-    ASSERT(JSLock::currentThreadIsHoldingLock());
+    ASSERT(globalData().apiLock().currentThreadIsHoldingLock());
     
     structure()->disableSpecificFunctionTracking();
 
-    m_globalData = Heap::heap(this)->globalData();
-    m_globalScopeChain.set(*m_globalData, this, new (m_globalData.get()) ScopeChainNode(0, this, m_globalData.get(), this, thisValue));
+    m_globalScopeChain.set(globalData(), this, ScopeChainNode::create(0, this, &globalData(), this, thisValue));
 
     JSGlobalObject::globalExec()->init(0, 0, m_globalScopeChain.get(), CallFrame::noCaller(), 0, 0);
 
     m_debugger = 0;
 
-    m_profileGroup = 0;
-
     reset(prototype());
 }
 
-void JSGlobalObject::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
+void JSGlobalObject::put(JSCell* cell, ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
 {
-    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
+    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject));
 
-    if (symbolTablePut(exec->globalData(), propertyName, value))
+    if (thisObject->symbolTablePut(exec, propertyName, value, slot.isStrictMode()))
         return;
-    JSVariableObject::put(exec, propertyName, value, slot);
+    JSVariableObject::put(thisObject, exec, propertyName, value, slot);
 }
 
-void JSGlobalObject::putWithAttributes(ExecState* exec, const Identifier& propertyName, JSValue value, unsigned attributes)
+void JSGlobalObject::putDirectVirtual(JSObject* object, ExecState* exec, const Identifier& propertyName, JSValue value, unsigned attributes)
 {
-    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
+    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(thisObject));
 
-    if (symbolTablePutWithAttributes(exec->globalData(), propertyName, value, attributes))
+    if (thisObject->symbolTablePutWithAttributes(exec->globalData(), propertyName, value, attributes))
         return;
 
-    JSValue valueBefore = getDirect(exec->globalData(), propertyName);
+    JSValue valueBefore = thisObject->getDirect(exec->globalData(), propertyName);
     PutPropertySlot slot;
-    JSVariableObject::put(exec, propertyName, value, slot);
+    JSVariableObject::put(thisObject, exec, propertyName, value, slot);
     if (!valueBefore) {
-        JSValue valueAfter = getDirect(exec->globalData(), propertyName);
+        JSValue valueAfter = thisObject->getDirect(exec->globalData(), propertyName);
         if (valueAfter)
-            JSObject::putWithAttributes(exec, propertyName, valueAfter, attributes);
+            JSObject::putDirectVirtual(thisObject, exec, propertyName, valueAfter, attributes);
     }
 }
 
-void JSGlobalObject::defineGetter(ExecState* exec, const Identifier& propertyName, JSObject* getterFunc, unsigned attributes)
+bool JSGlobalObject::defineOwnProperty(JSObject* object, ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor, bool shouldThrow)
 {
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
     PropertySlot slot;
-    if (!symbolTableGet(propertyName, slot))
-        JSVariableObject::defineGetter(exec, propertyName, getterFunc, attributes);
+    // silently ignore attempts to add accessors aliasing vars.
+    if (descriptor.isAccessorDescriptor() && thisObject->symbolTableGet(propertyName, slot))
+        return false;
+    return Base::defineOwnProperty(thisObject, exec, propertyName, descriptor, shouldThrow);
 }
 
-void JSGlobalObject::defineSetter(ExecState* exec, const Identifier& propertyName, JSObject* setterFunc, unsigned attributes)
-{
-    PropertySlot slot;
-    if (!symbolTableGet(propertyName, slot))
-        JSVariableObject::defineSetter(exec, propertyName, setterFunc, attributes);
-}
 
 static inline JSObject* lastInPrototypeChain(JSObject* object)
 {
@@ -187,115 +193,131 @@ void JSGlobalObject::reset(JSValue prototype)
 {
     ExecState* exec = JSGlobalObject::globalExec();
 
-    m_functionPrototype.set(exec->globalData(), this, new (exec) FunctionPrototype(exec, this, FunctionPrototype::createStructure(exec->globalData(), jsNull()))); // The real prototype will be set once ObjectPrototype is created.
-    m_functionStructure.set(exec->globalData(), this, JSFunction::createStructure(exec->globalData(), m_functionPrototype.get()));
-    m_internalFunctionStructure.set(exec->globalData(), this, InternalFunction::createStructure(exec->globalData(), m_functionPrototype.get()));
+    m_functionPrototype.set(exec->globalData(), this, FunctionPrototype::create(exec, this, FunctionPrototype::createStructure(exec->globalData(), this, jsNull()))); // The real prototype will be set once ObjectPrototype is created.
+    m_functionStructure.set(exec->globalData(), this, JSFunction::createStructure(exec->globalData(), this, m_functionPrototype.get()));
+    m_boundFunctionStructure.set(exec->globalData(), this, JSBoundFunction::createStructure(exec->globalData(), this, m_functionPrototype.get()));
+    m_namedFunctionStructure.set(exec->globalData(), this, Structure::addPropertyTransition(exec->globalData(), m_functionStructure.get(), exec->globalData().propertyNames->name, DontDelete | ReadOnly | DontEnum, 0, m_functionNameOffset));
+    m_internalFunctionStructure.set(exec->globalData(), this, InternalFunction::createStructure(exec->globalData(), this, m_functionPrototype.get()));
     JSFunction* callFunction = 0;
     JSFunction* applyFunction = 0;
-    m_functionPrototype->addFunctionProperties(exec, this, m_functionStructure.get(), &callFunction, &applyFunction);
+    m_functionPrototype->addFunctionProperties(exec, this, &callFunction, &applyFunction);
     m_callFunction.set(exec->globalData(), this, callFunction);
     m_applyFunction.set(exec->globalData(), this, applyFunction);
-    m_objectPrototype.set(exec->globalData(), this, new (exec) ObjectPrototype(exec, this, ObjectPrototype::createStructure(exec->globalData(), jsNull())));
+    m_objectPrototype.set(exec->globalData(), this, ObjectPrototype::create(exec, this, ObjectPrototype::createStructure(exec->globalData(), this, jsNull())));
+    GetterSetter* protoAccessor = GetterSetter::create(exec);
+    protoAccessor->setGetter(exec->globalData(), JSFunction::create(exec, this, 0, Identifier(), globalFuncProtoGetter));
+    protoAccessor->setSetter(exec->globalData(), JSFunction::create(exec, this, 0, Identifier(), globalFuncProtoSetter));
+    m_objectPrototype->putDirectAccessor(exec->globalData(), exec->propertyNames().underscoreProto, protoAccessor, Accessor | DontEnum);
     m_functionPrototype->structure()->setPrototypeWithoutTransition(exec->globalData(), m_objectPrototype.get());
 
     m_emptyObjectStructure.set(exec->globalData(), this, m_objectPrototype->inheritorID(exec->globalData()));
-    m_nullPrototypeObjectStructure.set(exec->globalData(), this, createEmptyObjectStructure(exec->globalData(), jsNull()));
+    m_nullPrototypeObjectStructure.set(exec->globalData(), this, createEmptyObjectStructure(exec->globalData(), this, jsNull()));
 
-    m_callbackFunctionStructure.set(exec->globalData(), this, JSCallbackFunction::createStructure(exec->globalData(), m_functionPrototype.get()));
-    m_argumentsStructure.set(exec->globalData(), this, Arguments::createStructure(exec->globalData(), m_objectPrototype.get()));
-    m_callbackConstructorStructure.set(exec->globalData(), this, JSCallbackConstructor::createStructure(exec->globalData(), m_objectPrototype.get()));
-    m_callbackObjectStructure.set(exec->globalData(), this, JSCallbackObject<JSObjectWithGlobalObject>::createStructure(exec->globalData(), m_objectPrototype.get()));
+    m_callbackFunctionStructure.set(exec->globalData(), this, JSCallbackFunction::createStructure(exec->globalData(), this, m_functionPrototype.get()));
+    m_argumentsStructure.set(exec->globalData(), this, Arguments::createStructure(exec->globalData(), this, m_objectPrototype.get()));
+    m_callbackConstructorStructure.set(exec->globalData(), this, JSCallbackConstructor::createStructure(exec->globalData(), this, m_objectPrototype.get()));
+    m_callbackObjectStructure.set(exec->globalData(), this, JSCallbackObject<JSNonFinalObject>::createStructure(exec->globalData(), this, m_objectPrototype.get()));
 
-    m_arrayPrototype.set(exec->globalData(), this, new (exec) ArrayPrototype(this, ArrayPrototype::createStructure(exec->globalData(), m_objectPrototype.get())));
-    m_arrayStructure.set(exec->globalData(), this, JSArray::createStructure(exec->globalData(), m_arrayPrototype.get()));
-    m_regExpMatchesArrayStructure.set(exec->globalData(), this, RegExpMatchesArray::createStructure(exec->globalData(), m_arrayPrototype.get()));
+    m_arrayPrototype.set(exec->globalData(), this, ArrayPrototype::create(exec, this, ArrayPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
+    m_arrayStructure.set(exec->globalData(), this, JSArray::createStructure(exec->globalData(), this, m_arrayPrototype.get()));
+    m_regExpMatchesArrayStructure.set(exec->globalData(), this, RegExpMatchesArray::createStructure(exec->globalData(), this, m_arrayPrototype.get()));
 
-    m_stringPrototype.set(exec->globalData(), this, new (exec) StringPrototype(exec, this, StringPrototype::createStructure(exec->globalData(), m_objectPrototype.get())));
-    m_stringObjectStructure.set(exec->globalData(), this, StringObject::createStructure(exec->globalData(), m_stringPrototype.get()));
+    m_stringPrototype.set(exec->globalData(), this, StringPrototype::create(exec, this, StringPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
+    m_stringObjectStructure.set(exec->globalData(), this, StringObject::createStructure(exec->globalData(), this, m_stringPrototype.get()));
 
-    m_booleanPrototype.set(exec->globalData(), this, new (exec) BooleanPrototype(exec, this, BooleanPrototype::createStructure(exec->globalData(), m_objectPrototype.get())));
-    m_booleanObjectStructure.set(exec->globalData(), this, BooleanObject::createStructure(exec->globalData(), m_booleanPrototype.get()));
+    m_booleanPrototype.set(exec->globalData(), this, BooleanPrototype::create(exec, this, BooleanPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
+    m_booleanObjectStructure.set(exec->globalData(), this, BooleanObject::createStructure(exec->globalData(), this, m_booleanPrototype.get()));
 
-    m_numberPrototype.set(exec->globalData(), this, new (exec) NumberPrototype(exec, this, NumberPrototype::createStructure(exec->globalData(), m_objectPrototype.get())));
-    m_numberObjectStructure.set(exec->globalData(), this, NumberObject::createStructure(exec->globalData(), m_numberPrototype.get()));
+    m_numberPrototype.set(exec->globalData(), this, NumberPrototype::create(exec, this, NumberPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
+    m_numberObjectStructure.set(exec->globalData(), this, NumberObject::createStructure(exec->globalData(), this, m_numberPrototype.get()));
 
-    m_datePrototype.set(exec->globalData(), this, new (exec) DatePrototype(exec, this, DatePrototype::createStructure(exec->globalData(), m_objectPrototype.get())));
-    m_dateStructure.set(exec->globalData(), this, DateInstance::createStructure(exec->globalData(), m_datePrototype.get()));
+    m_datePrototype.set(exec->globalData(), this, DatePrototype::create(exec, this, DatePrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
+    m_dateStructure.set(exec->globalData(), this, DateInstance::createStructure(exec->globalData(), this, m_datePrototype.get()));
 
-    RegExp* emptyRegex = RegExp::create(&exec->globalData(), "", NoFlags);
+    RegExp* emptyRegex = RegExp::create(exec->globalData(), "", NoFlags);
     
-    m_regExpPrototype.set(exec->globalData(), this, new (exec) RegExpPrototype(exec, this, RegExpPrototype::createStructure(exec->globalData(), m_objectPrototype.get()), emptyRegex));
-    m_regExpStructure.set(exec->globalData(), this, RegExpObject::createStructure(exec->globalData(), m_regExpPrototype.get()));
+    m_regExpPrototype.set(exec->globalData(), this, RegExpPrototype::create(exec, this, RegExpPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get()), emptyRegex));
+    m_regExpStructure.set(exec->globalData(), this, RegExpObject::createStructure(exec->globalData(), this, m_regExpPrototype.get()));
 
     m_methodCallDummy.set(exec->globalData(), this, constructEmptyObject(exec));
 
-    ErrorPrototype* errorPrototype = new (exec) ErrorPrototype(exec, this, ErrorPrototype::createStructure(exec->globalData(), m_objectPrototype.get()));
-    m_errorStructure.set(exec->globalData(), this, ErrorInstance::createStructure(exec->globalData(), errorPrototype));
+    ErrorPrototype* errorPrototype = ErrorPrototype::create(exec, this, ErrorPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get()));
+    m_errorStructure.set(exec->globalData(), this, ErrorInstance::createStructure(exec->globalData(), this, errorPrototype));
 
     // Constructors
 
-    JSCell* objectConstructor = new (exec) ObjectConstructor(exec, this, ObjectConstructor::createStructure(exec->globalData(), m_functionPrototype.get()), m_objectPrototype.get());
-    JSCell* functionConstructor = new (exec) FunctionConstructor(exec, this, FunctionConstructor::createStructure(exec->globalData(), m_functionPrototype.get()), m_functionPrototype.get());
-    JSCell* arrayConstructor = new (exec) ArrayConstructor(exec, this, ArrayConstructor::createStructure(exec->globalData(), m_functionPrototype.get()), m_arrayPrototype.get());
-    JSCell* stringConstructor = new (exec) StringConstructor(exec, this, StringConstructor::createStructure(exec->globalData(), m_functionPrototype.get()), m_stringPrototype.get());
-    JSCell* booleanConstructor = new (exec) BooleanConstructor(exec, this, BooleanConstructor::createStructure(exec->globalData(), m_functionPrototype.get()), m_booleanPrototype.get());
-    JSCell* numberConstructor = new (exec) NumberConstructor(exec, this, NumberConstructor::createStructure(exec->globalData(), m_functionPrototype.get()), m_numberPrototype.get());
-    JSCell* dateConstructor = new (exec) DateConstructor(exec, this, DateConstructor::createStructure(exec->globalData(), m_functionPrototype.get()), m_datePrototype.get());
-
-    m_regExpConstructor.set(exec->globalData(), this, new (exec) RegExpConstructor(exec, this, RegExpConstructor::createStructure(exec->globalData(), m_functionPrototype.get()), m_regExpPrototype.get()));
-
-    m_errorConstructor.set(exec->globalData(), this, new (exec) ErrorConstructor(exec, this, ErrorConstructor::createStructure(exec->globalData(), m_functionPrototype.get()), errorPrototype));
-
-    Structure* nativeErrorPrototypeStructure = NativeErrorPrototype::createStructure(exec->globalData(), errorPrototype);
-    Structure* nativeErrorStructure = NativeErrorConstructor::createStructure(exec->globalData(), m_functionPrototype.get());
-    m_evalErrorConstructor.set(exec->globalData(), this, new (exec) NativeErrorConstructor(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "EvalError"));
-    m_rangeErrorConstructor.set(exec->globalData(), this, new (exec) NativeErrorConstructor(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "RangeError"));
-    m_referenceErrorConstructor.set(exec->globalData(), this, new (exec) NativeErrorConstructor(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "ReferenceError"));
-    m_syntaxErrorConstructor.set(exec->globalData(), this, new (exec) NativeErrorConstructor(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "SyntaxError"));
-    m_typeErrorConstructor.set(exec->globalData(), this, new (exec) NativeErrorConstructor(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "TypeError"));
-    m_URIErrorConstructor.set(exec->globalData(), this, new (exec) NativeErrorConstructor(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "URIError"));
-
-    m_objectPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, objectConstructor, DontEnum);
-    m_functionPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, functionConstructor, DontEnum);
-    m_arrayPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, arrayConstructor, DontEnum);
-    m_booleanPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, booleanConstructor, DontEnum);
-    m_stringPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, stringConstructor, DontEnum);
-    m_numberPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, numberConstructor, DontEnum);
-    m_datePrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, dateConstructor, DontEnum);
-    m_regExpPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, m_regExpConstructor.get(), DontEnum);
-    errorPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, m_errorConstructor.get(), DontEnum);
-
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Object"), objectConstructor, DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Function"), functionConstructor, DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Array"), arrayConstructor, DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Boolean"), booleanConstructor, DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "String"), stringConstructor, DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Number"), numberConstructor, DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Date"), dateConstructor, DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "RegExp"), m_regExpConstructor.get(), DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Error"), m_errorConstructor.get(), DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "EvalError"), m_evalErrorConstructor.get(), DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "RangeError"), m_rangeErrorConstructor.get(), DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "ReferenceError"), m_referenceErrorConstructor.get(), DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "SyntaxError"), m_syntaxErrorConstructor.get(), DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "TypeError"), m_typeErrorConstructor.get(), DontEnum);
-    putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "URIError"), m_URIErrorConstructor.get(), DontEnum);
-
-    m_evalFunction.set(exec->globalData(), this, new (exec) JSFunction(exec, this, m_functionStructure.get(), 1, exec->propertyNames().eval, globalFuncEval));
-    putDirectFunctionWithoutTransition(exec, m_evalFunction.get(), DontEnum);
+    JSCell* objectConstructor = ObjectConstructor::create(exec, this, ObjectConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_objectPrototype.get());
+    JSCell* functionConstructor = FunctionConstructor::create(exec, this, FunctionConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_functionPrototype.get());
+    JSCell* arrayConstructor = ArrayConstructor::create(exec, this, ArrayConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_arrayPrototype.get());
+    JSCell* stringConstructor = StringConstructor::create(exec, this, StringConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_stringPrototype.get());
+    JSCell* booleanConstructor = BooleanConstructor::create(exec, this, BooleanConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_booleanPrototype.get());
+    JSCell* numberConstructor = NumberConstructor::create(exec, this, NumberConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_numberPrototype.get());
+    JSCell* dateConstructor = DateConstructor::create(exec, this, DateConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_datePrototype.get());
+
+    m_regExpConstructor.set(exec->globalData(), this, RegExpConstructor::create(exec, this, RegExpConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_regExpPrototype.get()));
+
+    m_errorConstructor.set(exec->globalData(), this, ErrorConstructor::create(exec, this, ErrorConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), errorPrototype));
+
+    Structure* nativeErrorPrototypeStructure = NativeErrorPrototype::createStructure(exec->globalData(), this, errorPrototype);
+    Structure* nativeErrorStructure = NativeErrorConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get());
+    m_evalErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "EvalError"));
+    m_rangeErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "RangeError"));
+    m_referenceErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "ReferenceError"));
+    m_syntaxErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "SyntaxError"));
+    m_typeErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "TypeError"));
+    m_URIErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "URIError"));
+
+    m_objectPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, objectConstructor, DontEnum);
+    m_functionPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, functionConstructor, DontEnum);
+    m_arrayPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, arrayConstructor, DontEnum);
+    m_booleanPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, booleanConstructor, DontEnum);
+    m_stringPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, stringConstructor, DontEnum);
+    m_numberPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, numberConstructor, DontEnum);
+    m_datePrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, dateConstructor, DontEnum);
+    m_regExpPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, m_regExpConstructor.get(), DontEnum);
+    errorPrototype->putDirectWithoutTransition(exec->globalData(), exec->propertyNames().constructor, m_errorConstructor.get(), DontEnum);
+
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Object"), objectConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Function"), functionConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Array"), arrayConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Boolean"), booleanConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "String"), stringConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Number"), numberConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Date"), dateConstructor, DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "RegExp"), m_regExpConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "Error"), m_errorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "EvalError"), m_evalErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "RangeError"), m_rangeErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "ReferenceError"), m_referenceErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "SyntaxError"), m_syntaxErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "TypeError"), m_typeErrorConstructor.get(), DontEnum);
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "URIError"), m_URIErrorConstructor.get(), DontEnum);
+
+    m_evalFunction.set(exec->globalData(), this, JSFunction::create(exec, this, 1, exec->propertyNames().eval, globalFuncEval));
+    putDirectWithoutTransition(exec->globalData(), exec->propertyNames().eval, m_evalFunction.get(), DontEnum);
+
+    putDirectWithoutTransition(exec->globalData(), Identifier(exec, "JSON"), JSONObject::create(exec, this, JSONObject::createStructure(exec->globalData(), this, m_objectPrototype.get())), DontEnum);
 
     GlobalPropertyInfo staticGlobals[] = {
-        GlobalPropertyInfo(Identifier(exec, "Math"), new (exec) MathObject(exec, this, MathObject::createStructure(exec->globalData(), m_objectPrototype.get())), DontEnum | DontDelete),
+        GlobalPropertyInfo(Identifier(exec, "Math"), MathObject::create(exec, this, MathObject::createStructure(exec->globalData(), this, m_objectPrototype.get())), DontEnum | DontDelete),
         GlobalPropertyInfo(Identifier(exec, "NaN"), jsNaN(), DontEnum | DontDelete | ReadOnly),
-        GlobalPropertyInfo(Identifier(exec, "Infinity"), jsNumber(Inf), DontEnum | DontDelete | ReadOnly),
-        GlobalPropertyInfo(Identifier(exec, "undefined"), jsUndefined(), DontEnum | DontDelete | ReadOnly),
-        GlobalPropertyInfo(Identifier(exec, "JSON"), new (exec) JSONObject(this, JSONObject::createStructure(exec->globalData(), m_objectPrototype.get())), DontEnum | DontDelete)
+        GlobalPropertyInfo(Identifier(exec, "Infinity"), jsNumber(std::numeric_limits<double>::infinity()), DontEnum | DontDelete | ReadOnly),
+        GlobalPropertyInfo(Identifier(exec, "undefined"), jsUndefined(), DontEnum | DontDelete | ReadOnly)
     };
     addStaticGlobals(staticGlobals, WTF_ARRAY_LENGTH(staticGlobals));
 
     resetPrototype(exec->globalData(), prototype);
 }
 
+void JSGlobalObject::createThrowTypeError(ExecState* exec)
+{
+    JSFunction* thrower = JSFunction::create(exec, this, 0, Identifier(), globalFuncThrowTypeError);
+    GetterSetter* getterSetter = GetterSetter::create(exec);
+    getterSetter->setGetter(exec->globalData(), thrower);
+    getterSetter->setSetter(exec->globalData(), thrower);
+    m_throwTypeErrorGetterSetter.set(exec->globalData(), this, getterSetter);
+}
+
 // Set prototype, and also insert the object prototype at the end of the chain.
 void JSGlobalObject::resetPrototype(JSGlobalData& globalData, JSValue prototype)
 {
@@ -307,64 +329,68 @@ void JSGlobalObject::resetPrototype(JSGlobalData& globalData, JSValue prototype)
         oldLastInPrototypeChain->setPrototype(globalData, objectPrototype);
 }
 
-void JSGlobalObject::visitChildren(SlotVisitor& visitor)
-{
-    ASSERT_GC_OBJECT_INHERITS(this, &s_info);
+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(structure()->typeInfo().overridesVisitChildren());
-    JSVariableObject::visitChildren(visitor);
-
-    visitIfNeeded(visitor, &m_globalScopeChain);
-    visitIfNeeded(visitor, &m_methodCallDummy);
-
-    visitIfNeeded(visitor, &m_regExpConstructor);
-    visitIfNeeded(visitor, &m_errorConstructor);
-    visitIfNeeded(visitor, &m_evalErrorConstructor);
-    visitIfNeeded(visitor, &m_rangeErrorConstructor);
-    visitIfNeeded(visitor, &m_referenceErrorConstructor);
-    visitIfNeeded(visitor, &m_syntaxErrorConstructor);
-    visitIfNeeded(visitor, &m_typeErrorConstructor);
-    visitIfNeeded(visitor, &m_URIErrorConstructor);
-
-    visitIfNeeded(visitor, &m_evalFunction);
-    visitIfNeeded(visitor, &m_callFunction);
-    visitIfNeeded(visitor, &m_applyFunction);
-
-    visitIfNeeded(visitor, &m_objectPrototype);
-    visitIfNeeded(visitor, &m_functionPrototype);
-    visitIfNeeded(visitor, &m_arrayPrototype);
-    visitIfNeeded(visitor, &m_booleanPrototype);
-    visitIfNeeded(visitor, &m_stringPrototype);
-    visitIfNeeded(visitor, &m_numberPrototype);
-    visitIfNeeded(visitor, &m_datePrototype);
-    visitIfNeeded(visitor, &m_regExpPrototype);
-
-    visitIfNeeded(visitor, &m_argumentsStructure);
-    visitIfNeeded(visitor, &m_arrayStructure);
-    visitIfNeeded(visitor, &m_booleanObjectStructure);
-    visitIfNeeded(visitor, &m_callbackConstructorStructure);
-    visitIfNeeded(visitor, &m_callbackFunctionStructure);
-    visitIfNeeded(visitor, &m_callbackObjectStructure);
-    visitIfNeeded(visitor, &m_dateStructure);
-    visitIfNeeded(visitor, &m_emptyObjectStructure);
-    visitIfNeeded(visitor, &m_nullPrototypeObjectStructure);
-    visitIfNeeded(visitor, &m_errorStructure);
-    visitIfNeeded(visitor, &m_functionStructure);
-    visitIfNeeded(visitor, &m_numberObjectStructure);
-    visitIfNeeded(visitor, &m_regExpMatchesArrayStructure);
-    visitIfNeeded(visitor, &m_regExpStructure);
-    visitIfNeeded(visitor, &m_stringObjectStructure);
-    visitIfNeeded(visitor, &m_internalFunctionStructure);
-
-    if (m_registerArray) {
+    ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
+    JSVariableObject::visitChildren(thisObject, visitor);
+
+    visitIfNeeded(visitor, &thisObject->m_globalScopeChain);
+    visitIfNeeded(visitor, &thisObject->m_methodCallDummy);
+
+    visitIfNeeded(visitor, &thisObject->m_regExpConstructor);
+    visitIfNeeded(visitor, &thisObject->m_errorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_evalErrorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_rangeErrorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_referenceErrorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_syntaxErrorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_typeErrorConstructor);
+    visitIfNeeded(visitor, &thisObject->m_URIErrorConstructor);
+
+    visitIfNeeded(visitor, &thisObject->m_evalFunction);
+    visitIfNeeded(visitor, &thisObject->m_callFunction);
+    visitIfNeeded(visitor, &thisObject->m_applyFunction);
+    visitIfNeeded(visitor, &thisObject->m_throwTypeErrorGetterSetter);
+
+    visitIfNeeded(visitor, &thisObject->m_objectPrototype);
+    visitIfNeeded(visitor, &thisObject->m_functionPrototype);
+    visitIfNeeded(visitor, &thisObject->m_arrayPrototype);
+    visitIfNeeded(visitor, &thisObject->m_booleanPrototype);
+    visitIfNeeded(visitor, &thisObject->m_stringPrototype);
+    visitIfNeeded(visitor, &thisObject->m_numberPrototype);
+    visitIfNeeded(visitor, &thisObject->m_datePrototype);
+    visitIfNeeded(visitor, &thisObject->m_regExpPrototype);
+
+    visitIfNeeded(visitor, &thisObject->m_argumentsStructure);
+    visitIfNeeded(visitor, &thisObject->m_arrayStructure);
+    visitIfNeeded(visitor, &thisObject->m_booleanObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_callbackConstructorStructure);
+    visitIfNeeded(visitor, &thisObject->m_callbackFunctionStructure);
+    visitIfNeeded(visitor, &thisObject->m_callbackObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_dateStructure);
+    visitIfNeeded(visitor, &thisObject->m_emptyObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_nullPrototypeObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_errorStructure);
+    visitIfNeeded(visitor, &thisObject->m_functionStructure);
+    visitIfNeeded(visitor, &thisObject->m_boundFunctionStructure);
+    visitIfNeeded(visitor, &thisObject->m_namedFunctionStructure);
+    visitIfNeeded(visitor, &thisObject->m_numberObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_regExpMatchesArrayStructure);
+    visitIfNeeded(visitor, &thisObject->m_regExpStructure);
+    visitIfNeeded(visitor, &thisObject->m_stringObjectStructure);
+    visitIfNeeded(visitor, &thisObject->m_internalFunctionStructure);
+
+    if (thisObject->m_registerArray) {
         // Outside the execution of global code, when our variables are torn off,
         // we can mark the torn-off array.
-        visitor.appendValues(m_registerArray.get(), m_registerArraySize);
-    } else if (m_registers) {
+        visitor.appendValues(thisObject->m_registerArray.get(), thisObject->m_registerArraySize);
+    } else if (thisObject->m_registers) {
         // During execution of global code, when our variables are in the register file,
         // the symbol table tells us how many variables there are, and registers
         // points to where they end, and the registers used for execution begin.
-        visitor.appendValues(m_registers - symbolTable().size(), symbolTable().size());
+        visitor.appendValues(thisObject->m_registers - thisObject->symbolTable().size(), thisObject->symbolTable().size());
     }
 }
 
@@ -373,122 +399,57 @@ ExecState* JSGlobalObject::globalExec()
     return CallFrame::create(m_globalCallFrame + RegisterFile::CallFrameHeaderSize);
 }
 
-bool JSGlobalObject::isDynamicScope(bool&) const
-{
-    return true;
-}
-
-void JSGlobalObject::disableEval()
-{
-    ASSERT(m_isEvalEnabled);
-    m_isEvalEnabled = false;
-}
-
-void JSGlobalObject::copyGlobalsFrom(RegisterFile& registerFile)
-{
-    ASSERT(!m_registerArray);
-    ASSERT(!m_registerArraySize);
-
-    int numGlobals = registerFile.numGlobals();
-    if (!numGlobals) {
-        m_registers = 0;
-        return;
-    }
-
-    OwnArrayPtr<WriteBarrier<Unknown> > registerArray = copyRegisterArray(globalData(), reinterpret_cast<WriteBarrier<Unknown>*>(registerFile.lastGlobal()), numGlobals, numGlobals);
-    WriteBarrier<Unknown>* registers = registerArray.get() + numGlobals;
-    setRegisters(registers, registerArray.release(), numGlobals);
-}
-
-void JSGlobalObject::copyGlobalsTo(RegisterFile& registerFile)
-{
-    JSGlobalObject* lastGlobalObject = registerFile.globalObject();
-    if (lastGlobalObject && lastGlobalObject != this)
-        lastGlobalObject->copyGlobalsFrom(registerFile);
-
-    registerFile.setGlobalObject(this);
-    registerFile.setNumGlobals(symbolTable().size());
-
-    if (m_registerArray) {
-        // The register file is always a gc root so no barrier is needed here
-        memcpy(registerFile.start() - m_registerArraySize, m_registerArray.get(), m_registerArraySize * sizeof(WriteBarrier<Unknown>));
-        setRegisters(reinterpret_cast<WriteBarrier<Unknown>*>(registerFile.start()), nullptr, 0);
-    }
-}
-
-void JSGlobalObject::resizeRegisters(int oldSize, int newSize)
+void JSGlobalObject::resizeRegisters(size_t newSize)
 {
-    ASSERT(oldSize <= newSize);
-    if (newSize == oldSize)
+    // Previous duplicate symbols may have created spare capacity in m_registerArray.
+    if (newSize <= m_registerArraySize)
         return;
-    ASSERT(newSize && newSize > oldSize);
-    if (m_registerArray || !m_registers) {
-        ASSERT(static_cast<size_t>(oldSize) == m_registerArraySize);
-        OwnArrayPtr<WriteBarrier<Unknown> > registerArray = adoptArrayPtr(new WriteBarrier<Unknown>[newSize]);
-        for (int i = 0; i < oldSize; i++)
-            registerArray[newSize - oldSize + i].set(globalData(), this, m_registerArray[i].get());
-        WriteBarrier<Unknown>* registers = registerArray.get() + newSize;
-        setRegisters(registers, registerArray.release(), newSize);
-    } else {
-        ASSERT(static_cast<size_t>(newSize) < globalData().interpreter->registerFile().maxGlobals());
-        globalData().interpreter->registerFile().setNumGlobals(newSize);
-    }
 
-    for (int i = -newSize; i < -oldSize; ++i)
-        m_registers[i].setUndefined();
-}
+    size_t oldSize = m_registerArraySize;
+    OwnArrayPtr<WriteBarrier<Unknown> > registerArray = adoptArrayPtr(new WriteBarrier<Unknown>[newSize]);
+    for (size_t i = 0; i < oldSize; ++i)
+        registerArray[i].set(globalData(), this, m_registerArray[i].get());
+    for (size_t i = oldSize; i < newSize; ++i)
+        registerArray[i].setUndefined();
 
-void* JSGlobalObject::operator new(size_t size, JSGlobalData* globalData)
-{
-    return globalData->heap.allocate(size);
+    WriteBarrier<Unknown>* registers = registerArray.get();
+    setRegisters(registers, registerArray.release(), newSize);
 }
 
 void JSGlobalObject::addStaticGlobals(GlobalPropertyInfo* globals, int count)
 {
-    size_t oldSize = m_registerArraySize;
-    size_t newSize = oldSize + count;
-    OwnArrayPtr<WriteBarrier<Unknown> > registerArray = adoptArrayPtr(new WriteBarrier<Unknown>[newSize]);
-    if (m_registerArray) {
-        // memcpy is safe here as we're copying barriers we already own from the existing array
-        memcpy(registerArray.get() + count, m_registerArray.get(), oldSize * sizeof(Register));
-    }
+    resizeRegisters(symbolTable().size() + count);
 
-    WriteBarrier<Unknown>* registers = registerArray.get() + newSize;
-    setRegisters(registers, registerArray.release(), newSize);
-
-    for (int i = 0, index = -static_cast<int>(oldSize) - 1; i < count; ++i, --index) {
+    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(globalData(), this, global.value);
     }
 }
 
-bool JSGlobalObject::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
+bool JSGlobalObject::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
 {
-    if (getStaticFunctionSlot<JSVariableObject>(exec, ExecState::globalObjectTable(exec), this, propertyName, slot))
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(cell);
+    if (getStaticFunctionSlot<JSVariableObject>(exec, ExecState::globalObjectTable(exec), thisObject, propertyName, slot))
         return true;
-    return symbolTableGet(propertyName, slot);
+    return thisObject->symbolTableGet(propertyName, slot);
 }
 
-bool JSGlobalObject::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
+bool JSGlobalObject::getOwnPropertyDescriptor(JSObject* object, ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
 {
-    if (getStaticFunctionDescriptor<JSVariableObject>(exec, ExecState::globalObjectTable(exec), this, propertyName, descriptor))
+    JSGlobalObject* thisObject = jsCast<JSGlobalObject*>(object);
+    if (getStaticFunctionDescriptor<JSVariableObject>(exec, ExecState::globalObjectTable(exec), thisObject, propertyName, descriptor))
         return true;
-    return symbolTableGet(propertyName, descriptor);
-}
-
-void JSGlobalObject::WeakMapsFinalizer::finalize(Handle<Unknown> handle, void*)
-{
-    JSGlobalObject* globalObject = asGlobalObject(handle.get());
-    globalObject->m_weakMaps.clear();
+    return thisObject->symbolTableGet(propertyName, descriptor);
 }
 
-JSGlobalObject::WeakMapsFinalizer* JSGlobalObject::weakMapsFinalizer()
+void JSGlobalObject::clearRareData(JSCell* cell)
 {
-    static WeakMapsFinalizer* finalizer = new WeakMapsFinalizer();
-    return finalizer;
+    jsCast<JSGlobalObject*>(cell)->m_rareData.clear();
 }
 
 DynamicGlobalObjectScope::DynamicGlobalObjectScope(JSGlobalData& globalData, JSGlobalObject* dynamicGlobalObject)
@@ -498,7 +459,7 @@ DynamicGlobalObjectScope::DynamicGlobalObjectScope(JSGlobalData& globalData, JSG
     if (!m_dynamicGlobalObjectSlot) {
 #if ENABLE(ASSEMBLER)
         if (ExecutableAllocator::underMemoryPressure())
-            globalData.recompileAllJSFunctions();
+            globalData.heap.discardAllCompiledCode();
 #endif
 
         m_dynamicGlobalObjectSlot = dynamicGlobalObject;