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      1 /*
      2  * Copyright (C) 2010 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "JSDOMStringMap.h"
     28 
     29 #include "DOMStringMap.h"
     30 #include <wtf/text/AtomicString.h>
     31 
     32 using namespace JSC;
     33 
     34 namespace WebCore {
     35 
     36 bool JSDOMStringMap::canGetItemsForName(ExecState*, DOMStringMap* impl, const Identifier& propertyName)
     37 {
     38     return impl->contains(identifierToAtomicString(propertyName));
     39 }
     40 
     41 JSValue JSDOMStringMap::nameGetter(ExecState* exec, JSValue slotBase, const Identifier& propertyName)
     42 {
     43     JSDOMStringMap* thisObj = static_cast<JSDOMStringMap*>(asObject(slotBase));
     44     return jsString(exec, thisObj->impl()->item(identifierToAtomicString(propertyName)));
     45 }
     46 
     47 void JSDOMStringMap::getOwnPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
     48 {
     49     Vector<String> names;
     50     m_impl->getNames(names);
     51     size_t length = names.size();
     52     for (size_t i = 0; i < length; ++i)
     53         propertyNames.add(Identifier(exec, stringToUString(names[i])));
     54 
     55     Base::getOwnPropertyNames(exec, propertyNames, mode);
     56 }
     57 
     58 bool JSDOMStringMap::deleteProperty(ExecState* exec, const Identifier& propertyName)
     59 {
     60     // Only perform the custom delete if the object doesn't have a native property by this name.
     61     // Since hasProperty() would end up calling canGetItemsForName() and be fooled, we need to check
     62     // the native property slots manually.
     63     PropertySlot slot;
     64     if (getStaticValueSlot<JSDOMStringMap, Base>(exec, s_info.propHashTable(exec), this, propertyName, slot))
     65         return false;
     66 
     67     JSValue prototype = this->prototype();
     68     if (prototype.isObject() && asObject(prototype)->hasProperty(exec, propertyName))
     69         return false;
     70 
     71     ExceptionCode ec = 0;
     72     m_impl->deleteItem(identifierToString(propertyName), ec);
     73     setDOMException(exec, ec);
     74 
     75     return true;
     76 }
     77 
     78 bool JSDOMStringMap::putDelegate(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot&)
     79 {
     80     // Only perform the custom put if the object doesn't have a native property by this name.
     81     // Since hasProperty() would end up calling canGetItemsForName() and be fooled, we need to check
     82     // the native property slots manually.
     83     PropertySlot slot;
     84     if (getStaticValueSlot<JSDOMStringMap, Base>(exec, s_info.propHashTable(exec), this, propertyName, slot))
     85         return false;
     86 
     87     JSValue prototype = this->prototype();
     88     if (prototype.isObject() && asObject(prototype)->hasProperty(exec, propertyName))
     89         return false;
     90 
     91     String stringValue = ustringToString(value.toString(exec));
     92     if (exec->hadException())
     93         return true;
     94 
     95     ExceptionCode ec = 0;
     96     impl()->setItem(identifierToString(propertyName), stringValue, ec);
     97     setDOMException(exec, ec);
     98 
     99     return true;
    100 }
    101 
    102 } // namespace WebCore
    103