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| 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 * | |
| 8 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer in the | |
| 12 * documentation and/or other materials provided with the distribution. | |
| 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of | |
| 14 * its contributors may be used to endorse or promote products derived | |
| 15 * from this software without specific prior written permission. | |
| 16 * | |
| 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
| 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
| 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #ifndef AtomicStringHash_h | |
| 30 #define AtomicStringHash_h | |
| 31 | |
| 32 #include <wtf/text/AtomicString.h> | |
| 33 #include <wtf/HashTraits.h> | |
| 34 | |
| 35 namespace WTF { | |
| 36 | |
| 37 struct AtomicStringHash { | |
| 38 static unsigned hash(const AtomicString& key) | |
| 39 { | |
| 40 return key.impl()->existingHash(); | |
| 41 } | |
| 42 | |
| 43 static bool equal(const AtomicString& a, const AtomicString& b) | |
| 44 { | |
| 45 return a == b; | |
| 46 } | |
| 47 | |
| 48 static const bool safeToCompareToEmptyOrDeleted = false; | |
| 49 }; | |
| 50 | |
| 51 // AtomicStringHash is the default hash for AtomicString | |
| 52 template<> struct HashTraits<WTF::AtomicString> : GenericHashTraits<WTF::Ato
micString> { | |
| 53 static const bool emptyValueIsZero = true; | |
| 54 static void constructDeletedValue(WTF::AtomicString& slot) { new (NotNul
l, &slot) WTF::AtomicString(HashTableDeletedValue); } | |
| 55 static bool isDeletedValue(const WTF::AtomicString& slot) { return slot.
isHashTableDeletedValue(); } | |
| 56 }; | |
| 57 | |
| 58 } | |
| 59 | |
| 60 using WTF::AtomicStringHash; | |
| 61 | |
| 62 #endif | |
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Chromium Code Reviews
Issue 14238015:
Move Source/WTF/wtf to Source/wtf (Closed)
Base URL: svn://svn.chromium.org/blink/trunk