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::s_info = { "String", &JSWrapperObject::s_info, 0, 0 };
  31
  32 StringObject::StringObject(ExecState* exec, Structure* structure)
  33     : JSWrapperObject(exec->globalData(), structure)
  34 {
  35     ASSERT(inherits(&s_info));
  36     setInternalValue(exec->globalData(), jsEmptyString(exec));
  37 }
  38
  39 StringObject::StringObject(JSGlobalData& globalData, Structure* structure, JSString* string)
  40     : JSWrapperObject(globalData, structure)
  41 {
  42     ASSERT(inherits(&s_info));
  43     setInternalValue(globalData, string);
  44 }
  45
  46 StringObject::StringObject(ExecState* exec, Structure* structure, const UString& string)
  47     : JSWrapperObject(exec->globalData(), structure)
  48 {
  49     ASSERT(inherits(&s_info));
  50     setInternalValue(exec->globalData(), jsString(exec, string));
  51 }
  52
  53 bool StringObject::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
  54 {
  55     if (internalValue()->getStringPropertySlot(exec, propertyName, slot))
  56         return true;
  57     return JSObject::getOwnPropertySlot(exec, propertyName, slot);
  58 }
  59
  60 bool StringObject::getOwnPropertySlot(ExecState* exec, unsigned propertyName, PropertySlot& slot)
  61 {
  62     if (internalValue()->getStringPropertySlot(exec, propertyName, slot))
  63         return true;
  64     return JSObject::getOwnPropertySlot(exec, Identifier::from(exec, propertyName), slot);
  65 }
  66
  67 bool StringObject::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
  68 {
  69     if (internalValue()->getStringPropertyDescriptor(exec, propertyName, descriptor))
  70         return true;
  71     return JSObject::getOwnPropertyDescriptor(exec, propertyName, descriptor);
  72 }
  73
  74 void StringObject::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
  75 {
  76     if (propertyName == exec->propertyNames().length)
  77         return;
  78     JSObject::put(exec, propertyName, value, slot);
  79 }
  80
  81 bool StringObject::deleteProperty(ExecState* exec, const Identifier& propertyName)
  82 {
  83     if (propertyName == exec->propertyNames().length)
  84         return false;
  85     bool isStrictUInt32;
  86     unsigned i = propertyName.toUInt32(isStrictUInt32);
  87     if (isStrictUInt32 && internalValue()->canGetIndex(i))
  88         return false;
  89     return JSObject::deleteProperty(exec, propertyName);
  90 }
  91
  92 void StringObject::getOwnPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
  93 {
  94     int size = internalValue()->length();
  95     for (int i = 0; i < size; ++i)
  96         propertyNames.add(Identifier(exec, UString::number(i)));
  97     if (mode == IncludeDontEnumProperties)
  98         propertyNames.add(exec->propertyNames().length);
  99     return JSObject::getOwnPropertyNames(exec, propertyNames, mode);
 100 }
 101
 102 } // namespace JSC