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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:34:13 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:34:13 (GMT)
commit67ad0519fd165acee4a4d2a94fa502e9e4847bd0 (patch)
tree1dbf50b3dff8d5ca7e9344733968c72704eb15ff /src/3rdparty/webkit/JavaScriptCore/runtime/StructureChain.cpp
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Long live Qt!
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diff --git a/src/3rdparty/webkit/JavaScriptCore/runtime/StructureChain.cpp b/src/3rdparty/webkit/JavaScriptCore/runtime/StructureChain.cpp
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+/*
+ * Copyright (C) 2008 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 "StructureChain.h"
+
+#include "JSObject.h"
+#include "Structure.h"
+#include <wtf/RefPtr.h>
+
+namespace JSC {
+
+StructureChain::StructureChain(Structure* structure)
+{
+ size_t size = 1;
+
+ Structure* tmp = structure;
+ while (!tmp->storedPrototype()->isNull()) {
+ ++size;
+ tmp = asCell(tmp->storedPrototype())->structure();
+ }
+
+ m_vector.set(new RefPtr<Structure>[size + 1]);
+
+ size_t i;
+ for (i = 0; i < size - 1; ++i) {
+ m_vector[i] = structure;
+ structure = asObject(structure->storedPrototype())->structure();
+ }
+ m_vector[i] = structure;
+ m_vector[i + 1] = 0;
+}
+
+bool structureChainsAreEqual(StructureChain* chainA, StructureChain* chainB)
+{
+ if (!chainA || !chainB)
+ return false;
+
+ RefPtr<Structure>* a = chainA->head();
+ RefPtr<Structure>* b = chainB->head();
+ while (1) {
+ if (*a != *b)
+ return false;
+ if (!*a)
+ return true;
+ a++;
+ b++;
+ }
+}
+
+} // namespace JSC