From 40736c5763bf61337c8c14e16d8587db021a87d4 Mon Sep 17 00:00:00 2001
From: Simon Hausmann <simon.hausmann@nokia.com>
Date: Fri, 6 Jan 2012 14:44:00 +0100
Subject: Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4
 (http://svn.webkit.org/repository/webkit/trunk@104285)

---
 Source/JavaScriptCore/runtime/ScopeChain.cpp | 85 ++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 Source/JavaScriptCore/runtime/ScopeChain.cpp

(limited to 'Source/JavaScriptCore/runtime/ScopeChain.cpp')

diff --git a/Source/JavaScriptCore/runtime/ScopeChain.cpp b/Source/JavaScriptCore/runtime/ScopeChain.cpp
new file mode 100644
index 000000000..099f7fde6
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/ScopeChain.cpp
@@ -0,0 +1,85 @@
+/*
+ *  Copyright (C) 2003, 2006, 2008 Apple Inc.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this library; see the file COPYING.LIB.  If not, write to
+ *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "ScopeChain.h"
+
+#include "JSActivation.h"
+#include "JSGlobalObject.h"
+#include "JSObject.h"
+#include "PropertyNameArray.h"
+#include <stdio.h>
+
+namespace JSC {
+
+ASSERT_HAS_TRIVIAL_DESTRUCTOR(ScopeChainNode);
+
+#ifndef NDEBUG
+
+void ScopeChainNode::print()
+{
+    ScopeChainIterator scopeEnd = end();
+    for (ScopeChainIterator scopeIter = begin(); scopeIter != scopeEnd; ++scopeIter) {
+        JSObject* o = scopeIter->get();
+        PropertyNameArray propertyNames(globalObject->globalExec());
+        o->methodTable()->getPropertyNames(o, globalObject->globalExec(), propertyNames, ExcludeDontEnumProperties);
+        PropertyNameArray::const_iterator propEnd = propertyNames.end();
+
+        fprintf(stderr, "----- [scope %p] -----\n", o);
+        for (PropertyNameArray::const_iterator propIter = propertyNames.begin(); propIter != propEnd; propIter++) {
+            Identifier name = *propIter;
+            fprintf(stderr, "%s, ", name.ustring().utf8().data());
+        }
+        fprintf(stderr, "\n");
+    }
+}
+
+#endif
+
+const ClassInfo ScopeChainNode::s_info = { "ScopeChainNode", 0, 0, 0, CREATE_METHOD_TABLE(ScopeChainNode) };
+
+int ScopeChainNode::localDepth()
+{
+    int scopeDepth = 0;
+    ScopeChainIterator iter = this->begin();
+    ScopeChainIterator end = this->end();
+    while (!(*iter)->inherits(&JSActivation::s_info)) {
+        ++iter;
+        if (iter == end)
+            break;
+        ++scopeDepth;
+    }
+    return scopeDepth;
+}
+
+void ScopeChainNode::visitChildren(JSCell* cell, SlotVisitor& visitor)
+{
+    ScopeChainNode* thisObject = jsCast<ScopeChainNode*>(cell);
+    ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
+    COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
+    ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
+    if (thisObject->next)
+        visitor.append(&thisObject->next);
+    visitor.append(&thisObject->object);
+    visitor.append(&thisObject->globalObject);
+    visitor.append(&thisObject->globalThis);
+}
+
+} // namespace JSC
-- 
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