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authorSteve Block <steveblock@google.com>2011-05-13 06:44:40 -0700
committerAndroid (Google) Code Review <android-gerrit@google.com>2011-05-13 06:44:40 -0700
commit08014c20784f3db5df3a89b73cce46037b77eb59 (patch)
tree47749210d31e19e6e2f64036fa8fae2ad693476f /Source/JavaScriptCore/runtime/StructureTransitionTable.h
parent860220379e56aeb66424861ad602b07ee22b4055 (diff)
parent4c3661f7918f8b3f139f824efb7855bedccb4c94 (diff)
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Merge changes Ide388898,Ic49f367c,I1158a808,Iacb6ca5d,I2100dd3a,I5c1abe54,Ib0ef9902,I31dbc523,I570314b3
* changes: Merge WebKit at r75315: Update WebKit version Merge WebKit at r75315: Add FrameLoaderClient PageCache stubs Merge WebKit at r75315: Stub out AXObjectCache::remove() Merge WebKit at r75315: Fix ImageBuffer Merge WebKit at r75315: Fix PluginData::initPlugins() Merge WebKit at r75315: Fix conflicts Merge WebKit at r75315: Fix Makefiles Merge WebKit at r75315: Move Android-specific WebCore files to Source Merge WebKit at r75315: Initial merge by git.
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diff --git a/Source/JavaScriptCore/runtime/StructureTransitionTable.h b/Source/JavaScriptCore/runtime/StructureTransitionTable.h
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+/*
+ * Copyright (C) 2008, 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.
+ */
+
+#ifndef StructureTransitionTable_h
+#define StructureTransitionTable_h
+
+#include "UString.h"
+#include <wtf/HashFunctions.h>
+#include <wtf/HashMap.h>
+#include <wtf/HashTraits.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/RefPtr.h>
+
+namespace JSC {
+
+ class Structure;
+
+ struct StructureTransitionTableHash {
+ typedef std::pair<RefPtr<StringImpl>, unsigned> Key;
+ static unsigned hash(const Key& p)
+ {
+ return p.first->existingHash();
+ }
+
+ static bool equal(const Key& a, const Key& b)
+ {
+ return a == b;
+ }
+
+ static const bool safeToCompareToEmptyOrDeleted = true;
+ };
+
+ struct StructureTransitionTableHashTraits {
+ typedef WTF::HashTraits<RefPtr<StringImpl> > FirstTraits;
+ typedef WTF::GenericHashTraits<unsigned> SecondTraits;
+ typedef std::pair<FirstTraits::TraitType, SecondTraits::TraitType > TraitType;
+
+ static const bool emptyValueIsZero = FirstTraits::emptyValueIsZero && SecondTraits::emptyValueIsZero;
+ static TraitType emptyValue() { return std::make_pair(FirstTraits::emptyValue(), SecondTraits::emptyValue()); }
+
+ static const bool needsDestruction = FirstTraits::needsDestruction || SecondTraits::needsDestruction;
+
+ static void constructDeletedValue(TraitType& slot) { FirstTraits::constructDeletedValue(slot.first); }
+ static bool isDeletedValue(const TraitType& value) { return FirstTraits::isDeletedValue(value.first); }
+ };
+
+} // namespace JSC
+
+#endif // StructureTransitionTable_h