1 files changed, 0 insertions, 699 deletions
diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSObject.cpp b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSObject.cpp
deleted file mode 100644
index 0e3475f..0000000
--- a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/JSObject.cpp
+++ /dev/null
@@ -1,699 +0,0 @@
-/*
- *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
- *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
- *  Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Apple Inc. All rights reserved.
- *  Copyright (C) 2007 Eric Seidel (eric@webkit.org)
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Library General Public
- *  License as published by the Free Software Foundation; either
- *  version 2 of the License, or (at your option) any later version.
- *
- *  This library is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  Library General Public License for more details.
- *
- *  You should have received a copy of the GNU Library General Public License
- *  along with this library; see the file COPYING.LIB.  If not, write to
- *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- *  Boston, MA 02110-1301, USA.
- *
- */
-
-#include "config.h"
-#include "JSObject.h"
-
-#include "DatePrototype.h"
-#include "ErrorConstructor.h"
-#include "GetterSetter.h"
-#include "JSGlobalObject.h"
-#include "NativeErrorConstructor.h"
-#include "ObjectPrototype.h"
-#include "PropertyDescriptor.h"
-#include "PropertyNameArray.h"
-#include "Lookup.h"
-#include "Nodes.h"
-#include "Operations.h"
-#include <math.h>
-#include <wtf/Assertions.h>
-
-namespace JSC {
-
-ASSERT_CLASS_FITS_IN_CELL(JSObject);
-
-static inline void getClassPropertyNames(ExecState* exec, const ClassInfo* classInfo, PropertyNameArray& propertyNames, EnumerationMode mode)
-{
-    // Add properties from the static hashtables of properties
-    for (; classInfo; classInfo = classInfo->parentClass) {
-        const HashTable* table = classInfo->propHashTable(exec);
-        if (!table)
-            continue;
-        table->initializeIfNeeded(exec);
-        ASSERT(table->table);
-
-        int hashSizeMask = table->compactSize - 1;
-        const HashEntry* entry = table->table;
-        for (int i = 0; i <= hashSizeMask; ++i, ++entry) {
-            if (entry->key() && (!(entry->attributes() & DontEnum) || (mode == IncludeDontEnumProperties)))
-                propertyNames.add(entry->key());
-        }
-    }
-}
-
-void JSObject::markChildren(MarkStack& markStack)
-{
-#ifndef NDEBUG
-    bool wasCheckingForDefaultMarkViolation = markStack.m_isCheckingForDefaultMarkViolation;
-    markStack.m_isCheckingForDefaultMarkViolation = false;
-#endif
-
-    markChildrenDirect(markStack);
-
-#ifndef NDEBUG
-    markStack.m_isCheckingForDefaultMarkViolation = wasCheckingForDefaultMarkViolation;
-#endif
-}
-
-UString JSObject::className() const
-{
-    const ClassInfo* info = classInfo();
-    if (info)
-        return info->className;
-    return "Object";
-}
-
-bool JSObject::getOwnPropertySlot(ExecState* exec, unsigned propertyName, PropertySlot& slot)
-{
-    return getOwnPropertySlot(exec, Identifier::from(exec, propertyName), slot);
-}
-
-static void throwSetterError(ExecState* exec)
-{
-    throwError(exec, TypeError, "setting a property that has only a getter");
-}
-
-// ECMA 8.6.2.2
-void JSObject::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
-{
-    ASSERT(value);
-    ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
-
-    if (propertyName == exec->propertyNames().underscoreProto) {
-        // Setting __proto__ to a non-object, non-null value is silently ignored to match Mozilla.
-        if (!value.isObject() && !value.isNull())
-            return;
-
-        JSValue nextPrototypeValue = value;
-        while (nextPrototypeValue && nextPrototypeValue.isObject()) {
-            JSObject* nextPrototype = asObject(nextPrototypeValue)->unwrappedObject();
-            if (nextPrototype == this) {
-                throwError(exec, GeneralError, "cyclic __proto__ value");
-                return;
-            }
-            nextPrototypeValue = nextPrototype->prototype();
-        }
-
-        setPrototype(value);
-        return;
-    }
-
-    // Check if there are any setters or getters in the prototype chain
-    JSValue prototype;
-    for (JSObject* obj = this; !obj->structure()->hasGetterSetterProperties(); obj = asObject(prototype)) {
-        prototype = obj->prototype();
-        if (prototype.isNull()) {
-            putDirectInternal(exec->globalData(), propertyName, value, 0, true, slot);
-            return;
-        }
-    }
-    
-    unsigned attributes;
-    JSCell* specificValue;
-    if ((m_structure->get(propertyName, attributes, specificValue) != WTF::notFound) && attributes & ReadOnly)
-        return;
-
-    for (JSObject* obj = this; ; obj = asObject(prototype)) {
-#ifdef QT_BUILD_SCRIPT_LIB
-        PropertyDescriptor descriptor;
-        if (obj->getPropertyDescriptor(exec, propertyName, descriptor)) {
-            JSObject* setterFunc;
-            if ((descriptor.isAccessorDescriptor() && ((setterFunc = asObject(descriptor.setter())), true))
-                || (descriptor.value().isGetterSetter() && ((setterFunc = asGetterSetter(descriptor.value())->setter()), true))) {
-#else
-        if (JSValue gs = obj->getDirect(propertyName)) {
-            if (gs.isGetterSetter()) {
-                JSObject* setterFunc = asGetterSetter(gs)->setter();
-#endif
-                if (!setterFunc) {
-                    throwSetterError(exec);
-                    return;
-                }
-                
-                CallData callData;
-                CallType callType = setterFunc->getCallData(callData);
-                MarkedArgumentBuffer args;
-                args.append(value);
-                call(exec, setterFunc, callType, callData, this, args);
-                return;
-            }
-
-            // If there's an existing property on the object or one of its 
-            // prototypes it should be replaced, so break here.
-            break;
-        }
-
-        prototype = obj->prototype();
-        if (prototype.isNull())
-            break;
-    }
-
-    putDirectInternal(exec->globalData(), propertyName, value, 0, true, slot);
-    return;
-}
-
-void JSObject::put(ExecState* exec, unsigned propertyName, JSValue value)
-{
-    PutPropertySlot slot;
-    put(exec, Identifier::from(exec, propertyName), value, slot);
-}
-
-void JSObject::putWithAttributes(ExecState* exec, const Identifier& propertyName, JSValue value, unsigned attributes, bool checkReadOnly, PutPropertySlot& slot)
-{
-    putDirectInternal(exec->globalData(), propertyName, value, attributes, checkReadOnly, slot);
-}
-
-void JSObject::putWithAttributes(ExecState* exec, const Identifier& propertyName, JSValue value, unsigned attributes)
-{
-    putDirectInternal(exec->globalData(), propertyName, value, attributes);
-}
-
-void JSObject::putWithAttributes(ExecState* exec, unsigned propertyName, JSValue value, unsigned attributes)
-{
-    putWithAttributes(exec, Identifier::from(exec, propertyName), value, attributes);
-}
-
-bool JSObject::hasProperty(ExecState* exec, const Identifier& propertyName) const
-{
-    PropertySlot slot;
-    return const_cast<JSObject*>(this)->getPropertySlot(exec, propertyName, slot);
-}
-
-bool JSObject::hasProperty(ExecState* exec, unsigned propertyName) const
-{
-    PropertySlot slot;
-    return const_cast<JSObject*>(this)->getPropertySlot(exec, propertyName, slot);
-}
-
-// ECMA 8.6.2.5
-bool JSObject::deleteProperty(ExecState* exec, const Identifier& propertyName)
-{
-    unsigned attributes;
-    JSCell* specificValue;
-    if (m_structure->get(propertyName, attributes, specificValue) != WTF::notFound) {
-        if ((attributes & DontDelete))
-            return false;
-        removeDirect(propertyName);
-        return true;
-    }
-
-    // Look in the static hashtable of properties
-    const HashEntry* entry = findPropertyHashEntry(exec, propertyName);
-    if (entry && entry->attributes() & DontDelete)
-        return false; // this builtin property can't be deleted
-
-    // FIXME: Should the code here actually do some deletion?
-    return true;
-}
-
-bool JSObject::hasOwnProperty(ExecState* exec, const Identifier& propertyName) const
-{
-    PropertySlot slot;
-    return const_cast<JSObject*>(this)->getOwnPropertySlot(exec, propertyName, slot);
-}
-
-bool JSObject::deleteProperty(ExecState* exec, unsigned propertyName)
-{
-    return deleteProperty(exec, Identifier::from(exec, propertyName));
-}
-
-static ALWAYS_INLINE JSValue callDefaultValueFunction(ExecState* exec, const JSObject* object, const Identifier& propertyName)
-{
-    JSValue function = object->get(exec, propertyName);
-    CallData callData;
-    CallType callType = function.getCallData(callData);
-    if (callType == CallTypeNone)
-        return exec->exception();
-
-    // Prevent "toString" and "valueOf" from observing execution if an exception
-    // is pending.
-    if (exec->hadException())
-        return exec->exception();
-
-    JSValue result = call(exec, function, callType, callData, const_cast<JSObject*>(object), exec->emptyList());
-    ASSERT(!result.isGetterSetter());
-    if (exec->hadException())
-        return exec->exception();
-    if (result.isObject())
-        return JSValue();
-    return result;
-}
-
-bool JSObject::getPrimitiveNumber(ExecState* exec, double& number, JSValue& result)
-{
-    result = defaultValue(exec, PreferNumber);
-    number = result.toNumber(exec);
-    return !result.isString();
-}
-
-// ECMA 8.6.2.6
-JSValue JSObject::defaultValue(ExecState* exec, PreferredPrimitiveType hint) const
-{
-    // Must call toString first for Date objects.
-    if ((hint == PreferString) || (hint != PreferNumber && prototype() == exec->lexicalGlobalObject()->datePrototype())) {
-        JSValue value = callDefaultValueFunction(exec, this, exec->propertyNames().toString);
-        if (value)
-            return value;
-        value = callDefaultValueFunction(exec, this, exec->propertyNames().valueOf);
-        if (value)
-            return value;
-    } else {
-        JSValue value = callDefaultValueFunction(exec, this, exec->propertyNames().valueOf);
-        if (value)
-            return value;
-        value = callDefaultValueFunction(exec, this, exec->propertyNames().toString);
-        if (value)
-            return value;
-    }
-
-    ASSERT(!exec->hadException());
-
-    return throwError(exec, TypeError, "No default value");
-}
-
-const HashEntry* JSObject::findPropertyHashEntry(ExecState* exec, const Identifier& propertyName) const
-{
-    for (const ClassInfo* info = classInfo(); info; info = info->parentClass) {
-        if (const HashTable* propHashTable = info->propHashTable(exec)) {
-            if (const HashEntry* entry = propHashTable->entry(exec, propertyName))
-                return entry;
-        }
-    }
-    return 0;
-}
-
-void JSObject::defineGetter(ExecState* exec, const Identifier& propertyName, JSObject* getterFunction, unsigned attributes)
-{
-    JSValue object = getDirect(propertyName);
-    if (object && object.isGetterSetter()) {
-        ASSERT(m_structure->hasGetterSetterProperties());
-        asGetterSetter(object)->setGetter(getterFunction);
-        return;
-    }
-
-    PutPropertySlot slot;
-    GetterSetter* getterSetter = new (exec) GetterSetter(exec);
-    putDirectInternal(exec->globalData(), propertyName, getterSetter, attributes | Getter, true, slot);
-
-    // putDirect will change our Structure if we add a new property. For
-    // getters and setters, though, we also need to change our Structure
-    // if we override an existing non-getter or non-setter.
-    if (slot.type() != PutPropertySlot::NewProperty) {
-        if (!m_structure->isDictionary()) {
-            RefPtr<Structure> structure = Structure::getterSetterTransition(m_structure);
-            setStructure(structure.release());
-        }
-    }
-
-    m_structure->setHasGetterSetterProperties(true);
-    getterSetter->setGetter(getterFunction);
-}
-
-void JSObject::defineSetter(ExecState* exec, const Identifier& propertyName, JSObject* setterFunction, unsigned attributes)
-{
-    JSValue object = getDirect(propertyName);
-    if (object && object.isGetterSetter()) {
-        ASSERT(m_structure->hasGetterSetterProperties());
-        asGetterSetter(object)->setSetter(setterFunction);
-        return;
-    }
-
-    PutPropertySlot slot;
-    GetterSetter* getterSetter = new (exec) GetterSetter(exec);
-    putDirectInternal(exec->globalData(), propertyName, getterSetter, attributes | Setter, true, slot);
-
-    // putDirect will change our Structure if we add a new property. For
-    // getters and setters, though, we also need to change our Structure
-    // if we override an existing non-getter or non-setter.
-    if (slot.type() != PutPropertySlot::NewProperty) {
-        if (!m_structure->isDictionary()) {
-            RefPtr<Structure> structure = Structure::getterSetterTransition(m_structure);
-            setStructure(structure.release());
-        }
-    }
-
-    m_structure->setHasGetterSetterProperties(true);
-    getterSetter->setSetter(setterFunction);
-}
-
-JSValue JSObject::lookupGetter(ExecState*, const Identifier& propertyName)
-{
-    JSObject* object = this;
-    while (true) {
-        if (JSValue value = object->getDirect(propertyName)) {
-            if (!value.isGetterSetter())
-                return jsUndefined();
-            JSObject* functionObject = asGetterSetter(value)->getter();
-            if (!functionObject)
-                return jsUndefined();
-            return functionObject;
-        }
-
-        if (!object->prototype() || !object->prototype().isObject())
-            return jsUndefined();
-        object = asObject(object->prototype());
-    }
-}
-
-JSValue JSObject::lookupSetter(ExecState*, const Identifier& propertyName)
-{
-    JSObject* object = this;
-    while (true) {
-        if (JSValue value = object->getDirect(propertyName)) {
-            if (!value.isGetterSetter())
-                return jsUndefined();
-            JSObject* functionObject = asGetterSetter(value)->setter();
-            if (!functionObject)
-                return jsUndefined();
-            return functionObject;
-        }
-
-        if (!object->prototype() || !object->prototype().isObject())
-            return jsUndefined();
-        object = asObject(object->prototype());
-    }
-}
-
-bool JSObject::hasInstance(ExecState* exec, JSValue value, JSValue proto)
-{
-    if (!value.isObject())
-        return false;
-
-    if (!proto.isObject()) {
-        throwError(exec, TypeError, "instanceof called on an object with an invalid prototype property.");
-        return false;
-    }
-
-    JSObject* object = asObject(value);
-    while ((object = object->prototype().getObject())) {
-        if (proto == object)
-            return true;
-    }
-    return false;
-}
-
-bool JSObject::propertyIsEnumerable(ExecState* exec, const Identifier& propertyName) const
-{
-    PropertyDescriptor descriptor;
-    if (!const_cast<JSObject*>(this)->getOwnPropertyDescriptor(exec, propertyName, descriptor))
-        return false;
-    return descriptor.enumerable();
-}
-
-bool JSObject::getPropertySpecificValue(ExecState*, const Identifier& propertyName, JSCell*& specificValue) const
-{
-    unsigned attributes;
-    if (m_structure->get(propertyName, attributes, specificValue) != WTF::notFound)
-        return true;
-
-    // This could be a function within the static table? - should probably
-    // also look in the hash?  This currently should not be a problem, since
-    // we've currently always call 'get' first, which should have populated
-    // the normal storage.
-    return false;
-}
-
-void JSObject::getPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
-{
-    getOwnPropertyNames(exec, propertyNames, mode);
-
-    if (prototype().isNull())
-        return;
-
-    JSObject* prototype = asObject(this->prototype());
-    while(1) {
-        if (prototype->structure()->typeInfo().overridesGetPropertyNames()) {
-            prototype->getPropertyNames(exec, propertyNames, mode);
-            break;
-        }
-        prototype->getOwnPropertyNames(exec, propertyNames, mode);
-        JSValue nextProto = prototype->prototype();
-        if (nextProto.isNull())
-            break;
-        prototype = asObject(nextProto);
-    }
-}
-
-void JSObject::getOwnPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
-{
-    m_structure->getPropertyNames(propertyNames, mode);
-    getClassPropertyNames(exec, classInfo(), propertyNames, mode);
-}
-
-bool JSObject::toBoolean(ExecState*) const
-{
-    return true;
-}
-
-double JSObject::toNumber(ExecState* exec) const
-{
-    JSValue primitive = toPrimitive(exec, PreferNumber);
-    if (exec->hadException()) // should be picked up soon in Nodes.cpp
-        return 0.0;
-    return primitive.toNumber(exec);
-}
-
-UString JSObject::toString(ExecState* exec) const
-{
-    JSValue primitive = toPrimitive(exec, PreferString);
-    if (exec->hadException())
-        return "";
-    return primitive.toString(exec);
-}
-
-JSObject* JSObject::toObject(ExecState*) const
-{
-    return const_cast<JSObject*>(this);
-}
-
-JSObject* JSObject::toThisObject(ExecState*) const
-{
-    return const_cast<JSObject*>(this);
-}
-
-JSObject* JSObject::unwrappedObject()
-{
-    return this;
-}
-
-void JSObject::removeDirect(const Identifier& propertyName)
-{
-    size_t offset;
-    if (m_structure->isUncacheableDictionary()) {
-        offset = m_structure->removePropertyWithoutTransition(propertyName);
-        if (offset != WTF::notFound)
-            putDirectOffset(offset, jsUndefined());
-        return;
-    }
-
-    RefPtr<Structure> structure = Structure::removePropertyTransition(m_structure, propertyName, offset);
-    setStructure(structure.release());
-    if (offset != WTF::notFound)
-        putDirectOffset(offset, jsUndefined());
-}
-
-void JSObject::putDirectFunction(ExecState* exec, InternalFunction* function, unsigned attr)
-{
-    putDirectFunction(Identifier(exec, function->name(exec)), function, attr);
-}
-
-void JSObject::putDirectFunctionWithoutTransition(ExecState* exec, InternalFunction* function, unsigned attr)
-{
-    putDirectFunctionWithoutTransition(Identifier(exec, function->name(exec)), function, attr);
-}
-
-NEVER_INLINE void JSObject::fillGetterPropertySlot(PropertySlot& slot, JSValue* location)
-{
-    if (JSObject* getterFunction = asGetterSetter(*location)->getter())
-        slot.setGetterSlot(getterFunction);
-    else
-        slot.setUndefined();
-}
-
-Structure* JSObject::createInheritorID()
-{
-#ifdef QT_BUILD_SCRIPT_LIB
-    // ### QtScript needs the hasOwnProperty() calls etc. for QScriptObject
-    m_inheritorID = Structure::create(this, TypeInfo(ObjectType, ImplementsHasInstance | JSC::OverridesHasInstance | JSC::OverridesGetOwnPropertySlot | JSC::OverridesMarkChildren | JSC::OverridesGetPropertyNames));
-#else
-    m_inheritorID = JSObject::createStructure(this);
-#endif
-    return m_inheritorID.get();
-}
-
-void JSObject::allocatePropertyStorage(size_t oldSize, size_t newSize)
-{
-    allocatePropertyStorageInline(oldSize, newSize);
-}
-
-bool JSObject::getOwnPropertyDescriptor(ExecState*, const Identifier& propertyName, PropertyDescriptor& descriptor)
-{
-    unsigned attributes = 0;
-    JSCell* cell = 0;
-    size_t offset = m_structure->get(propertyName, attributes, cell);
-    if (offset == WTF::notFound)
-        return false;
-    descriptor.setDescriptor(getDirectOffset(offset), attributes);
-    return true;
-}
-
-bool JSObject::getPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
-{
-    JSObject* object = this;
-    while (true) {
-        if (object->getOwnPropertyDescriptor(exec, propertyName, descriptor))
-            return true;
-        JSValue prototype = object->prototype();
-        if (!prototype.isObject())
-            return false;
-        object = asObject(prototype);
-    }
-}
-
-static bool putDescriptor(ExecState* exec, JSObject* target, const Identifier& propertyName, PropertyDescriptor& descriptor, unsigned attributes, JSValue oldValue)
-{
-    if (descriptor.isGenericDescriptor() || descriptor.isDataDescriptor()) {
-        target->putWithAttributes(exec, propertyName, descriptor.value() ? descriptor.value() : oldValue, attributes & ~(Getter | Setter));
-        return true;
-    }
-    attributes &= ~ReadOnly;
-    if (descriptor.getter() && descriptor.getter().isObject())
-        target->defineGetter(exec, propertyName, asObject(descriptor.getter()), attributes);
-    if (exec->hadException())
-        return false;
-    if (descriptor.setter() && descriptor.setter().isObject())
-        target->defineSetter(exec, propertyName, asObject(descriptor.setter()), attributes);
-    return !exec->hadException();
-}
-
-bool JSObject::defineOwnProperty(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor, bool throwException)
-{
-    // If we have a new property we can just put it on normally
-    PropertyDescriptor current;
-    if (!getOwnPropertyDescriptor(exec, propertyName, current))
-        return putDescriptor(exec, this, propertyName, descriptor, descriptor.attributes(), jsUndefined());
-
-    if (descriptor.isEmpty())
-        return true;
-
-    if (current.equalTo(exec, descriptor))
-        return true;
-
-    // Filter out invalid changes
-    if (!current.configurable()) {
-        if (descriptor.configurable()) {
-            if (throwException)
-                throwError(exec, TypeError, "Attempting to configurable attribute of unconfigurable property.");
-            return false;
-        }
-        if (descriptor.enumerablePresent() && descriptor.enumerable() != current.enumerable()) {
-            if (throwException)
-                throwError(exec, TypeError, "Attempting to change enumerable attribute of unconfigurable property.");
-            return false;
-        }
-    }
-
-    // A generic descriptor is simply changing the attributes of an existing property
-    if (descriptor.isGenericDescriptor()) {
-        if (!current.attributesEqual(descriptor)) {
-            deleteProperty(exec, propertyName);
-            putDescriptor(exec, this, propertyName, descriptor, current.attributesWithOverride(descriptor), current.value());
-        }
-        return true;
-    }
-
-    // Changing between a normal property or an accessor property
-    if (descriptor.isDataDescriptor() != current.isDataDescriptor()) {
-        if (!current.configurable()) {
-            if (throwException)
-                throwError(exec, TypeError, "Attempting to change access mechanism for an unconfigurable property.");
-            return false;
-        }
-        deleteProperty(exec, propertyName);
-        return putDescriptor(exec, this, propertyName, descriptor, current.attributesWithOverride(descriptor), current.value() ? current.value() : jsUndefined());
-    }
-
-    // Changing the value and attributes of an existing property
-    if (descriptor.isDataDescriptor()) {
-        if (!current.configurable()) {
-            if (!current.writable() && descriptor.writable()) {
-                if (throwException)
-                    throwError(exec, TypeError, "Attempting to change writable attribute of unconfigurable property.");
-                return false;
-            }
-            if (!current.writable()) {
-                if (descriptor.value() || !JSValue::strictEqual(exec, current.value(), descriptor.value())) {
-                    if (throwException)
-                        throwError(exec, TypeError, "Attempting to change value of a readonly property.");
-                    return false;
-                }
-            }
-        } else if (current.attributesEqual(descriptor)) {
-            if (!descriptor.value())
-                return true;
-            PutPropertySlot slot;
-            put(exec, propertyName, descriptor.value(), slot);
-            if (exec->hadException())
-                return false;
-            return true;
-        }
-        deleteProperty(exec, propertyName);
-        return putDescriptor(exec, this, propertyName, descriptor, current.attributesWithOverride(descriptor), current.value());
-    }
-
-    // Changing the accessor functions of an existing accessor property
-    ASSERT(descriptor.isAccessorDescriptor());
-    if (!current.configurable()) {
-        if (descriptor.setterPresent() && !(current.setter() && JSValue::strictEqual(exec, current.setter(), descriptor.setter()))) {
-            if (throwException)
-                throwError(exec, TypeError, "Attempting to change the setter of an unconfigurable property.");
-            return false;
-        }
-        if (descriptor.getterPresent() && !(current.getter() && JSValue::strictEqual(exec, current.getter(), descriptor.getter()))) {
-            if (throwException)
-                throwError(exec, TypeError, "Attempting to change the getter of an unconfigurable property.");
-            return false;
-        }
-    }
-    JSValue accessor = getDirect(propertyName);
-    if (!accessor)
-        return false;
-    GetterSetter* getterSetter = asGetterSetter(accessor);
-    if (current.attributesEqual(descriptor)) {
-        if (descriptor.setter())
-            getterSetter->setSetter(asObject(descriptor.setter()));
-        if (descriptor.getter())
-            getterSetter->setGetter(asObject(descriptor.getter()));
-        return true;
-    }
-    deleteProperty(exec, propertyName);
-    unsigned attrs = current.attributesWithOverride(descriptor);
-    if (descriptor.setter())
-        attrs |= Setter;
-    if (descriptor.getter())
-        attrs |= Getter;
-    putDirect(propertyName, getterSetter, attrs);
-    return true;
-}
-
-} // namespace JSC