runtime/StringObject.cpp

   1 /*
   2  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
   4  *
   5  *  This library is free software; you can redistribute it and/or
   6  *  modify it under the terms of the GNU Lesser General Public
   7  *  License as published by the Free Software Foundation; either
   8  *  version 2 of the License, or (at your option) any later version.
   9  *
  10  *  This library is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  *  Lesser General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU Lesser General Public
  16  *  License along with this library; if not, write to the Free Software
  17  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18  *
  19  */
  20
  21 #include "config.h"
  22 #include "StringObject.h"
  23
  24 #include "PropertyNameArray.h"
  25
  26 namespace JSC {
  27
  28 ASSERT_CLASS_FITS_IN_CELL(StringObject);
  29
  30 const ClassInfo StringObject::info = { "String", 0, 0, 0 };
  31
  32 StringObject::StringObject(ExecState* exec, NonNullPassRefPtr<Structure> structure)
  33     : JSWrapperObject(structure)
  34 {
  35     setInternalValue(jsEmptyString(exec));
  36 }
  37
  38 StringObject::StringObject(NonNullPassRefPtr<Structure> structure, JSString* string)
  39     : JSWrapperObject(structure)
  40 {
  41     setInternalValue(string);
  42 }
  43
  44 StringObject::StringObject(ExecState* exec, NonNullPassRefPtr<Structure> structure, const UString& string)
  45     : JSWrapperObject(structure)
  46 {
  47     setInternalValue(jsString(exec, string));
  48 }
  49
  50 bool StringObject::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
  51 {
  52     if (internalValue()->getStringPropertySlot(exec, propertyName, slot))
  53         return true;
  54     return JSObject::getOwnPropertySlot(exec, propertyName, slot);
  55 }
  56
  57 bool StringObject::getOwnPropertySlot(ExecState* exec, unsigned propertyName, PropertySlot& slot)
  58 {
  59     if (internalValue()->getStringPropertySlot(exec, propertyName, slot))
  60         return true;
  61     return JSObject::getOwnPropertySlot(exec, Identifier::from(exec, propertyName), slot);
  62 }
  63
  64 bool StringObject::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
  65 {
  66     if (internalValue()->getStringPropertyDescriptor(exec, propertyName, descriptor))
  67         return true;
  68     return JSObject::getOwnPropertyDescriptor(exec, propertyName, descriptor);
  69 }
  70
  71 void StringObject::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
  72 {
  73     if (propertyName == exec->propertyNames().length)
  74         return;
  75     JSObject::put(exec, propertyName, value, slot);
  76 }
  77
  78 bool StringObject::deleteProperty(ExecState* exec, const Identifier& propertyName)
  79 {
  80     if (propertyName == exec->propertyNames().length)
  81         return false;
  82     bool isStrictUInt32;
  83     unsigned i = propertyName.toStrictUInt32(&isStrictUInt32);
  84     if (isStrictUInt32 && internalValue()->canGetIndex(i))
  85         return false;
  86     return JSObject::deleteProperty(exec, propertyName);
  87 }
  88
  89 void StringObject::getOwnPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
  90 {
  91     int size = internalValue()->length();
  92     for (int i = 0; i < size; ++i)
  93         propertyNames.add(Identifier(exec, UString::from(i)));
  94     if (mode == IncludeDontEnumProperties)
  95         propertyNames.add(exec->propertyNames().length);
  96     return JSObject::getOwnPropertyNames(exec, propertyNames, mode);
  97 }
  98
  99 } // namespace JSC