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
canGetItemsForName(ExecState *,Storage * impl,const Identifier & propertyName)39 bool JSStorage::canGetItemsForName(ExecState*, Storage* impl, const Identifier& propertyName)
40 {
41 return impl->contains(identifierToString(propertyName));
42 }
43
nameGetter(ExecState * exec,JSValue slotBase,const Identifier & propertyName)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
deleteProperty(ExecState * exec,const Identifier & propertyName)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
getOwnPropertyNames(ExecState * exec,PropertyNameArray & propertyNames,EnumerationMode mode)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
putDelegate(ExecState * exec,const Identifier & propertyName,JSValue value,PutPropertySlot &)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