1 /* 2 * Copyright (C) 2008 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. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "JSStorageCustom.h" 28 29 #if ENABLE(DOM_STORAGE) 30 31 #include "PlatformString.h" 32 #include <runtime/PropertyNameArray.h> 33 #include "Storage.h" 34 35 using namespace JSC; 36 37 namespace WebCore { 38 39 bool JSStorage::canGetItemsForName(ExecState*, Storage* impl, const Identifier& propertyName) 40 { 41 return impl->contains(identifierToString(propertyName)); 42 } 43 44 JSValue JSStorage::nameGetter(ExecState* exec, JSValue slotBase, const Identifier& propertyName) 45 { 46 JSStorage* thisObj = static_cast<JSStorage*>(asObject(slotBase)); 47 return jsStringOrNull(exec, thisObj->impl()->getItem(identifierToString(propertyName))); 48 } 49 50 bool JSStorage::deleteProperty(ExecState* exec, const Identifier& propertyName) 51 { 52 // Only perform the custom delete if the object doesn't have a native property by this name. 53 // Since hasProperty() would end up calling canGetItemsForName() and be fooled, we need to check 54 // the native property slots manually. 55 PropertySlot slot; 56 if (getStaticValueSlot<JSStorage, Base>(exec, s_info.propHashTable(exec), this, propertyName, slot)) 57 return false; 58 59 JSValue prototype = this->prototype(); 60 if (prototype.isObject() && asObject(prototype)->hasProperty(exec, propertyName)) 61 return false; 62 63 m_impl->removeItem(identifierToString(propertyName)); 64 return true; 65 } 66 67 void JSStorage::getOwnPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode) 68 { 69 unsigned length = m_impl->length(); 70 for (unsigned i = 0; i < length; ++i) 71 propertyNames.add(Identifier(exec, stringToUString(m_impl->key(i)))); 72 73 Base::getOwnPropertyNames(exec, propertyNames, mode); 74 } 75 76 bool JSStorage::putDelegate(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot&) 77 { 78 // Only perform the custom put if the object doesn't have a native property by this name. 79 // Since hasProperty() would end up calling canGetItemsForName() and be fooled, we need to check 80 // the native property slots manually. 81 PropertySlot slot; 82 if (getStaticValueSlot<JSStorage, Base>(exec, s_info.propHashTable(exec), this, propertyName, slot)) 83 return false; 84 85 JSValue prototype = this->prototype(); 86 if (prototype.isObject() && asObject(prototype)->hasProperty(exec, propertyName)) 87 return false; 88 89 String stringValue = ustringToString(value.toString(exec)); 90 if (exec->hadException()) 91 return true; 92 93 ExceptionCode ec = 0; 94 impl()->setItem(identifierToString(propertyName), stringValue, ec); 95 setDOMException(exec, ec); 96 97 return true; 98 } 99 100 } // namespace WebCore 101 102 #endif // ENABLE(DOM_STORAGE) 103
