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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. ``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 "wtf/text/StringStatics.h" | |
| 27 | |
| 28 #include "wtf/DynamicAnnotations.h" | |
| 29 #include "wtf/StaticConstructors.h" | |
| 30 #include "wtf/text/AtomicString.h" | |
| 31 #include "wtf/text/StringImpl.h" | |
| 32 | |
| 33 namespace WTF { | |
| 34 | |
| 35 WTF_EXPORT DEFINE_GLOBAL(AtomicString, nullAtom); | |
| 36 WTF_EXPORT DEFINE_GLOBAL(AtomicString, emptyAtom); | |
| 37 WTF_EXPORT DEFINE_GLOBAL(AtomicString, starAtom); | |
| 38 WTF_EXPORT DEFINE_GLOBAL(AtomicString, xmlAtom); | |
| 39 WTF_EXPORT DEFINE_GLOBAL(AtomicString, xmlnsAtom); | |
| 40 WTF_EXPORT DEFINE_GLOBAL(AtomicString, xlinkAtom); | |
| 41 WTF_EXPORT DEFINE_GLOBAL(AtomicString, httpAtom); | |
| 42 WTF_EXPORT DEFINE_GLOBAL(AtomicString, httpsAtom); | |
| 43 | |
| 44 // This is not an AtomicString because it is unlikely to be used as an | |
| 45 // event/element/attribute name, so it shouldn't pollute the AtomicString hash | |
| 46 // table. | |
| 47 WTF_EXPORT DEFINE_GLOBAL(String, xmlnsWithColon); | |
| 48 | |
| 49 WTF_EXPORT DEFINE_GLOBAL(String, emptyString); | |
| 50 WTF_EXPORT DEFINE_GLOBAL(String, emptyString16Bit); | |
| 51 | |
| 52 NEVER_INLINE unsigned StringImpl::hashSlowCase() const { | |
| 53 if (is8Bit()) | |
| 54 setHash(StringHasher::computeHashAndMaskTop8Bits(characters8(), m_length)); | |
| 55 else | |
| 56 setHash(StringHasher::computeHashAndMaskTop8Bits(characters16(), m_length)); | |
| 57 return existingHash(); | |
| 58 } | |
| 59 | |
| 60 void AtomicString::init() { | |
| 61 DCHECK(isMainThread()); | |
| 62 | |
| 63 new (NotNull, (void*)&nullAtom) AtomicString; | |
| 64 new (NotNull, (void*)&emptyAtom) AtomicString(""); | |
| 65 } | |
| 66 | |
| 67 template <unsigned charactersCount> | |
| 68 PassRefPtr<StringImpl> addStaticASCIILiteral( | |
| 69 const char (&characters)[charactersCount]) { | |
| 70 unsigned length = charactersCount - 1; | |
| 71 unsigned hash = StringHasher::computeHashAndMaskTop8Bits( | |
| 72 reinterpret_cast<const LChar*>(characters), length); | |
| 73 return adoptRef(StringImpl::createStatic(characters, length, hash)); | |
| 74 } | |
| 75 | |
| 76 void StringStatics::init() { | |
| 77 DCHECK(isMainThread()); | |
| 78 | |
| 79 StringImpl::initStatics(); | |
| 80 new (NotNull, (void*)&emptyString) String(StringImpl::empty); | |
| 81 new (NotNull, (void*)&emptyString16Bit) String(StringImpl::empty16Bit); | |
| 82 | |
| 83 // FIXME: These should be allocated at compile time. | |
| 84 new (NotNull, (void*)&starAtom) AtomicString("*"); | |
| 85 new (NotNull, (void*)&xmlAtom) AtomicString(addStaticASCIILiteral("xml")); | |
| 86 new (NotNull, (void*)&xmlnsAtom) AtomicString(addStaticASCIILiteral("xmlns")); | |
| 87 new (NotNull, (void*)&xlinkAtom) AtomicString(addStaticASCIILiteral("xlink")); | |
| 88 new (NotNull, (void*)&xmlnsWithColon) String("xmlns:"); | |
| 89 new (NotNull, (void*)&httpAtom) AtomicString(addStaticASCIILiteral("http")); | |
| 90 new (NotNull, (void*)&httpsAtom) AtomicString(addStaticASCIILiteral("https")); | |
| 91 } | |
| 92 | |
| 93 } // namespace WTF | |
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