webkitgtk-2.10.2webkitgtk-2.10.2

1 files changed, 166 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/StringObject.cpp b/Source/JavaScriptCore/runtime/StringObject.cpp
new file mode 100644
index 000000000..b5aa3f72d
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/StringObject.cpp
@@ -0,0 +1,166 @@
+/*
+ *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2004, 2005, 2006, 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 Lesser 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
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include "config.h"
+#include "StringObject.h"
+
+#include "Error.h"
+#include "JSGlobalObject.h"
+#include "JSCInlines.h"
+#include "PropertyNameArray.h"
+
+namespace JSC {
+
+STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(StringObject);
+
+const ClassInfo StringObject::s_info = { "String", &JSWrapperObject::s_info, 0, CREATE_METHOD_TABLE(StringObject) };
+
+StringObject::StringObject(VM& vm, Structure* structure)
+    : JSWrapperObject(vm, structure)
+{
+}
+
+void StringObject::finishCreation(VM& vm, JSString* string)
+{
+    Base::finishCreation(vm);
+    ASSERT(inherits(info()));
+    setInternalValue(vm, string);
+}
+
+bool StringObject::getOwnPropertySlot(JSObject* cell, ExecState* exec, PropertyName propertyName, PropertySlot& slot)
+{
+    StringObject* thisObject = jsCast<StringObject*>(cell);
+    if (thisObject->internalValue()->getStringPropertySlot(exec, propertyName, slot))
+        return true;
+    return JSObject::getOwnPropertySlot(thisObject, exec, propertyName, slot);
+}
+    
+bool StringObject::getOwnPropertySlotByIndex(JSObject* object, ExecState* exec, unsigned propertyName, PropertySlot& slot)
+{
+    StringObject* thisObject = jsCast<StringObject*>(object);
+    if (thisObject->internalValue()->getStringPropertySlot(exec, propertyName, slot))
+        return true;    
+    return JSObject::getOwnPropertySlot(thisObject, exec, Identifier::from(exec, propertyName), slot);
+}
+
+void StringObject::put(JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot)
+{
+    if (propertyName == exec->propertyNames().length) {
+        if (slot.isStrictMode())
+            throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
+        return;
+    }
+    JSObject::put(cell, exec, propertyName, value, slot);
+}
+
+void StringObject::putByIndex(JSCell* cell, ExecState* exec, unsigned propertyName, JSValue value, bool shouldThrow)
+{
+    StringObject* thisObject = jsCast<StringObject*>(cell);
+    if (thisObject->internalValue()->canGetIndex(propertyName)) {
+        if (shouldThrow)
+            throwTypeError(exec, StrictModeReadonlyPropertyWriteError);
+        return;
+    }
+    JSObject::putByIndex(cell, exec, propertyName, value, shouldThrow);
+}
+
+bool StringObject::defineOwnProperty(JSObject* object, ExecState* exec, PropertyName propertyName, const PropertyDescriptor& descriptor, bool throwException)
+{
+    StringObject* thisObject = jsCast<StringObject*>(object);
+
+    if (propertyName == exec->propertyNames().length) {
+        if (!object->isExtensible()) {
+            if (throwException)
+                exec->vm().throwException(exec, createTypeError(exec, ASCIILiteral("Attempting to define property on object that is not extensible.")));
+            return false;
+        }
+        if (descriptor.configurablePresent() && descriptor.configurable()) {
+            if (throwException)
+                exec->vm().throwException(exec, createTypeError(exec, ASCIILiteral("Attempting to change configurable attribute of unconfigurable property.")));
+            return false;
+        }
+        if (descriptor.enumerablePresent() && descriptor.enumerable()) {
+            if (throwException)
+                exec->vm().throwException(exec, createTypeError(exec, ASCIILiteral("Attempting to change enumerable attribute of unconfigurable property.")));
+            return false;
+        }
+        if (descriptor.isAccessorDescriptor()) {
+            if (throwException)
+                exec->vm().throwException(exec, createTypeError(exec, ASCIILiteral("Attempting to change access mechanism for an unconfigurable property.")));
+            return false;
+        }
+        if (descriptor.writablePresent() && descriptor.writable()) {
+            if (throwException)
+                exec->vm().throwException(exec, createTypeError(exec, ASCIILiteral("Attempting to change writable attribute of unconfigurable property.")));
+            return false;
+        }
+        if (!descriptor.value())
+            return true;
+        if (propertyName == exec->propertyNames().length && sameValue(exec, descriptor.value(), jsNumber(thisObject->internalValue()->length())))
+            return true;
+        if (throwException)
+            exec->vm().throwException(exec, createTypeError(exec, ASCIILiteral("Attempting to change value of a readonly property.")));
+        return false;
+    }
+
+    return Base::defineOwnProperty(object, exec, propertyName, descriptor, throwException);
+}
+
+bool StringObject::deleteProperty(JSCell* cell, ExecState* exec, PropertyName propertyName)
+{
+    StringObject* thisObject = jsCast<StringObject*>(cell);
+    if (propertyName == exec->propertyNames().length)
+        return false;
+    Optional<uint32_t> index = parseIndex(propertyName);
+    if (index && thisObject->internalValue()->canGetIndex(index.value())) {
+        return false;
+    }
+    return JSObject::deleteProperty(thisObject, exec, propertyName);
+}
+
+bool StringObject::deletePropertyByIndex(JSCell* cell, ExecState* exec, unsigned i)
+{
+    StringObject* thisObject = jsCast<StringObject*>(cell);
+    if (thisObject->internalValue()->canGetIndex(i))
+        return false;
+    return JSObject::deletePropertyByIndex(thisObject, exec, i);
+}
+
+void StringObject::getOwnPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
+{
+    StringObject* thisObject = jsCast<StringObject*>(object);
+    if (propertyNames.includeStringProperties()) {
+        int size = thisObject->internalValue()->length();
+        for (int i = 0; i < size; ++i)
+            propertyNames.add(Identifier::from(exec, i));
+    }
+    if (mode.includeDontEnumProperties())
+        propertyNames.add(exec->propertyNames().length);
+    return JSObject::getOwnPropertyNames(thisObject, exec, propertyNames, mode);
+}
+
+StringObject* constructString(VM& vm, JSGlobalObject* globalObject, JSValue string)
+{
+    StringObject* object = StringObject::create(vm, globalObject->stringObjectStructure());
+    object->setInternalValue(vm, string);
+    return object;
+}
+
+} // namespace JSC