1 files changed, 223 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/runtime/JSCell.cpp b/Source/JavaScriptCore/runtime/JSCell.cpp
new file mode 100644
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--- /dev/null
+++ b/Source/JavaScriptCore/runtime/JSCell.cpp
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+/*
+ *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
+ *  Copyright (C) 2003, 2007, 2008 Apple Inc. All rights reserved.
+ *
+ *  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 "JSCell.h"
+
+#include "JSFunction.h"
+#include "JSString.h"
+#include "JSObject.h"
+#include "NumberObject.h"
+#include <wtf/MathExtras.h>
+
+namespace JSC {
+
+ASSERT_HAS_TRIVIAL_DESTRUCTOR(JSCell);
+
+void JSCell::destroy(JSCell* cell)
+{
+    cell->JSCell::~JSCell();
+}
+
+bool JSCell::getString(ExecState* exec, UString&stringValue) const
+{
+    if (!isString())
+        return false;
+    stringValue = static_cast<const JSString*>(this)->value(exec);
+    return true;
+}
+
+UString JSCell::getString(ExecState* exec) const
+{
+    return isString() ? static_cast<const JSString*>(this)->value(exec) : UString();
+}
+
+JSObject* JSCell::getObject()
+{
+    return isObject() ? asObject(this) : 0;
+}
+
+const JSObject* JSCell::getObject() const
+{
+    return isObject() ? static_cast<const JSObject*>(this) : 0;
+}
+
+CallType JSCell::getCallData(JSCell*, CallData&)
+{
+    return CallTypeNone;
+}
+
+ConstructType JSCell::getConstructData(JSCell*, ConstructData&)
+{
+    return ConstructTypeNone;
+}
+
+bool JSCell::getOwnPropertySlot(JSCell* cell, ExecState* exec, const Identifier& identifier, PropertySlot& slot)
+{
+    // This is not a general purpose implementation of getOwnPropertySlot.
+    // It should only be called by JSValue::get.
+    // It calls getPropertySlot, not getOwnPropertySlot.
+    JSObject* object = cell->toObject(exec, exec->lexicalGlobalObject());
+    slot.setBase(object);
+    if (!object->getPropertySlot(exec, identifier, slot))
+        slot.setUndefined();
+    return true;
+}
+
+bool JSCell::getOwnPropertySlotByIndex(JSCell* cell, ExecState* exec, unsigned identifier, PropertySlot& slot)
+{
+    // This is not a general purpose implementation of getOwnPropertySlot.
+    // It should only be called by JSValue::get.
+    // It calls getPropertySlot, not getOwnPropertySlot.
+    JSObject* object = cell->toObject(exec, exec->lexicalGlobalObject());
+    slot.setBase(object);
+    if (!object->getPropertySlot(exec, identifier, slot))
+        slot.setUndefined();
+    return true;
+}
+
+void JSCell::put(JSCell* cell, ExecState* exec, const Identifier& identifier, JSValue value, PutPropertySlot& slot)
+{
+    JSObject* thisObject = cell->toObject(exec, exec->lexicalGlobalObject());
+    thisObject->methodTable()->put(thisObject, exec, identifier, value, slot);
+}
+
+void JSCell::putByIndex(JSCell* cell, ExecState* exec, unsigned identifier, JSValue value)
+{
+    JSObject* thisObject = cell->toObject(exec, exec->lexicalGlobalObject());
+    thisObject->methodTable()->putByIndex(thisObject, exec, identifier, value);
+}
+
+bool JSCell::deleteProperty(JSCell* cell, ExecState* exec, const Identifier& identifier)
+{
+    JSObject* thisObject = cell->toObject(exec, exec->lexicalGlobalObject());
+    return thisObject->methodTable()->deleteProperty(thisObject, exec, identifier);
+}
+
+bool JSCell::deletePropertyByIndex(JSCell* cell, ExecState* exec, unsigned identifier)
+{
+    JSObject* thisObject = cell->toObject(exec, exec->lexicalGlobalObject());
+    return thisObject->methodTable()->deletePropertyByIndex(thisObject, exec, identifier);
+}
+
+JSObject* JSCell::toThisObject(JSCell* cell, ExecState* exec)
+{
+    return cell->toObject(exec, exec->lexicalGlobalObject());
+}
+
+JSValue JSCell::toPrimitive(ExecState* exec, PreferredPrimitiveType preferredType) const
+{
+    if (isString())
+        return static_cast<const JSString*>(this)->toPrimitive(exec, preferredType);
+    return static_cast<const JSObject*>(this)->toPrimitive(exec, preferredType);
+}
+
+bool JSCell::getPrimitiveNumber(ExecState* exec, double& number, JSValue& value) const
+{
+    if (isString())
+        return static_cast<const JSString*>(this)->getPrimitiveNumber(exec, number, value);
+    return static_cast<const JSObject*>(this)->getPrimitiveNumber(exec, number, value);
+}
+
+double JSCell::toNumber(ExecState* exec) const
+{ 
+    if (isString())
+        return static_cast<const JSString*>(this)->toNumber(exec);
+    return static_cast<const JSObject*>(this)->toNumber(exec);
+}
+
+UString JSCell::toString(ExecState* exec) const
+{
+    if (isString())
+        return static_cast<const JSString*>(this)->toString(exec);
+    return static_cast<const JSObject*>(this)->toString(exec);
+}
+
+JSObject* JSCell::toObject(ExecState* exec, JSGlobalObject* globalObject) const
+{
+    if (isString())
+        return static_cast<const JSString*>(this)->toObject(exec, globalObject);
+    ASSERT(isObject());
+    return static_cast<JSObject*>(const_cast<JSCell*>(this));
+}
+
+void slowValidateCell(JSCell* cell)
+{
+    ASSERT_GC_OBJECT_LOOKS_VALID(cell);
+}
+
+void JSCell::defineGetter(JSObject*, ExecState*, const Identifier&, JSObject*, unsigned)
+{
+    ASSERT_NOT_REACHED();
+}
+
+void JSCell::defineSetter(JSObject*, ExecState*, const Identifier&, JSObject*, unsigned)
+{
+    ASSERT_NOT_REACHED();
+}
+
+JSValue JSCell::defaultValue(const JSObject*, ExecState*, PreferredPrimitiveType)
+{
+    ASSERT_NOT_REACHED();
+    return jsUndefined();
+}
+
+void JSCell::getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode)
+{
+    ASSERT_NOT_REACHED();
+}
+
+UString JSCell::className(const JSObject*)
+{
+    ASSERT_NOT_REACHED();
+    return UString();
+}
+
+void JSCell::getPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode)
+{
+    ASSERT_NOT_REACHED();
+}
+
+bool JSCell::hasInstance(JSObject*, ExecState*, JSValue, JSValue)
+{
+    ASSERT_NOT_REACHED();
+    return false;
+}
+
+void JSCell::putWithAttributes(JSObject*, ExecState*, const Identifier&, JSValue, unsigned)
+{
+    ASSERT_NOT_REACHED();
+}
+
+bool JSCell::defineOwnProperty(JSObject*, ExecState*, const Identifier&, PropertyDescriptor&, bool)
+{
+    ASSERT_NOT_REACHED();
+    return false;
+}
+
+bool JSCell::getOwnPropertyDescriptor(JSObject*, ExecState*, const Identifier&, PropertyDescriptor&)
+{
+    ASSERT_NOT_REACHED();
+    return false;
+}
+
+} // namespace JSC