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author | Feng Qian <> | 2009-04-10 18:11:29 -0700 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-04-10 18:11:29 -0700 |
commit | 8f72e70a9fd78eec56623b3a62e68f16b7b27e28 (patch) | |
tree | 181bf9a400c30a1bf34ea6d72560e8d00111d549 /WebCore/bridge/IdentifierRep.cpp | |
parent | 7ed56f225e0ade046e1c2178977f72b2d896f196 (diff) | |
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AI 145796: Land the WebKit merge @r42026.
Automated import of CL 145796
Diffstat (limited to 'WebCore/bridge/IdentifierRep.cpp')
-rw-r--r-- | WebCore/bridge/IdentifierRep.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/WebCore/bridge/IdentifierRep.cpp b/WebCore/bridge/IdentifierRep.cpp new file mode 100644 index 0000000..11560e3 --- /dev/null +++ b/WebCore/bridge/IdentifierRep.cpp @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2009 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "IdentifierRep.h" + +#include "PlatformString.h" +#include <runtime/UString.h> +#include <wtf/HashMap.h> +#include <wtf/StdLibExtras.h> + +using namespace JSC; + +namespace WebCore { + +typedef HashSet<IdentifierRep*> IdentifierSet; + +static IdentifierSet& identifierSet() +{ + DEFINE_STATIC_LOCAL(IdentifierSet, identifierSet, ()); + return identifierSet; +} + +typedef HashMap<int, IdentifierRep*> IntIdentifierMap; + +static IntIdentifierMap& intIdentifierMap() +{ + DEFINE_STATIC_LOCAL(IntIdentifierMap, intIdentifierMap, ()); + return intIdentifierMap; +} + +IdentifierRep* IdentifierRep::get(int intID) +{ + if (intID == 0 || intID == -1) { + static IdentifierRep* negativeOneAndZeroIdentifiers[2]; + + IdentifierRep* identifier = negativeOneAndZeroIdentifiers[intID + 1]; + if (!identifier) { + identifier = new IdentifierRep(intID); + + negativeOneAndZeroIdentifiers[intID + 1] = identifier; + } + + return identifier; + } + + pair<IntIdentifierMap::iterator, bool> result = intIdentifierMap().add(intID, 0); + if (result.second) { + ASSERT(!result.first->second); + result.first->second = new IdentifierRep(intID); + + identifierSet().add(result.first->second); + } + + return result.first->second; +} + +typedef HashMap<RefPtr<JSC::UString::Rep>, IdentifierRep*> StringIdentifierMap; + +static StringIdentifierMap& stringIdentifierMap() +{ + DEFINE_STATIC_LOCAL(StringIdentifierMap, stringIdentifierMap, ()); + return stringIdentifierMap; +} + +IdentifierRep* IdentifierRep::get(const char* name) +{ + ASSERT(name); + if (!name) + return 0; + + UString string = String::fromUTF8WithLatin1Fallback(name, strlen(name)); + pair<StringIdentifierMap::iterator, bool> result = stringIdentifierMap().add(string.rep(), 0); + if (result.second) { + ASSERT(!result.first->second); + result.first->second = new IdentifierRep(name); + + identifierSet().add(result.first->second); + } + + return result.first->second; +} + +bool IdentifierRep::isValid(IdentifierRep* identifier) +{ + return identifierSet().contains(identifier); +} + +} // namespace WebCore |