diff -r 000000000000 -r 4f2f89ce4247 JavaScriptCore/runtime/Completion.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/runtime/Completion.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,74 @@
+/*
+ *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
+ *  Copyright (C) 2003, 2007 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 "Completion.h"
+
+#include "CallFrame.h"
+#include "JSGlobalObject.h"
+#include "JSLock.h"
+#include "Interpreter.h"
+#include "Parser.h"
+#include "Debugger.h"
+#include "WTFThreadData.h"
+#include <stdio.h>
+
+namespace JSC {
+
+Completion checkSyntax(ExecState* exec, const SourceCode& source)
+{
+    JSLock lock(exec);
+    ASSERT(exec->globalData().identifierTable == wtfThreadData().currentIdentifierTable());
+
+    RefPtr<ProgramExecutable> program = ProgramExecutable::create(exec, source);
+    JSObject* error = program->checkSyntax(exec);
+    if (error)
+        return Completion(Throw, error);
+
+    return Completion(Normal);
+}
+
+Completion evaluate(ExecState* exec, ScopeChain& scopeChain, const SourceCode& source, JSValue thisValue)
+{
+    JSLock lock(exec);
+    ASSERT(exec->globalData().identifierTable == wtfThreadData().currentIdentifierTable());
+
+    RefPtr<ProgramExecutable> program = ProgramExecutable::create(exec, source);
+    JSObject* error = program->compile(exec, scopeChain.node());
+    if (error)
+        return Completion(Throw, error);
+
+    JSObject* thisObj = (!thisValue || thisValue.isUndefinedOrNull()) ? exec->dynamicGlobalObject() : thisValue.toObject(exec);
+
+    JSValue exception;
+    JSValue result = exec->interpreter()->execute(program.get(), exec, scopeChain.node(), thisObj, &exception);
+
+    if (exception) {
+        ComplType exceptionType = Throw;
+        if (exception.isObject())
+            exceptionType = asObject(exception)->exceptionType();
+        return Completion(exceptionType, exception);
+    }
+    return Completion(Normal, result);
+}
+
+} // namespace JSC