2008-10-31 Cameron Zwarich <zwarich@apple.com>
Reviewed by Darin Adler.
Bug 22005: Move StructureIDChain into its own file
<https://bugs.webkit.org/show_bug.cgi?id=22005>
* GNUmakefile.am:
* JavaScriptCore.pri:
* JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
* JavaScriptCore.xcodeproj/project.pbxproj:
* JavaScriptCoreSources.bkl:
* runtime/StructureID.cpp:
* runtime/StructureID.h:
* runtime/StructureIDChain.cpp: Copied from runtime/StructureID.cpp.
* runtime/StructureIDChain.h: Copied from runtime/StructureID.h.
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@38046 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/JavaScriptCore/runtime/StructureIDChain.cpp b/JavaScriptCore/runtime/StructureIDChain.cpp
new file mode 100644
index 0000000..83d9254
--- /dev/null
+++ b/JavaScriptCore/runtime/StructureIDChain.cpp
@@ -0,0 +1,73 @@
+/*
+ * 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 "StructureIDChain.h"
+
+#include "JSObject.h"
+#include "StructureID.h"
+#include <wtf/RefPtr.h>
+
+namespace JSC {
+
+StructureIDChain::StructureIDChain(StructureID* structureID)
+{
+ size_t size = 1;
+
+ StructureID* tmp = structureID;
+ while (!tmp->storedPrototype()->isNull()) {
+ ++size;
+ tmp = asCell(tmp->storedPrototype())->structureID();
+ }
+
+ m_vector.set(new RefPtr<StructureID>[size + 1]);
+
+ size_t i;
+ for (i = 0; i < size - 1; ++i) {
+ m_vector[i] = structureID;
+ structureID = asObject(structureID->storedPrototype())->structureID();
+ }
+ m_vector[i] = structureID;
+ m_vector[i + 1] = 0;
+}
+
+bool structureIDChainsAreEqual(StructureIDChain* chainA, StructureIDChain* chainB)
+{
+ if (!chainA || !chainB)
+ return false;
+
+ RefPtr<StructureID>* a = chainA->head();
+ RefPtr<StructureID>* b = chainB->head();
+ while (1) {
+ if (*a != *b)
+ return false;
+ if (!*a)
+ return true;
+ a++;
+ b++;
+ }
+}
+
+} // namespace JSC
