/*+
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 * Copyright 2008 Sun Microsystems, Inc.  All Rights Reserved.+
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.+
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 *+
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 * This code is free software; you can redistribute it and/or modify it+
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 * under the terms of the GNU General Public License version 2 only, as+
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 * published by the Free Software Foundation.+
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 *+
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 * This code is distributed in the hope that it will be useful, but WITHOUT+
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or+
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License+
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 * version 2 for more details (a copy is included in the LICENSE file that+
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 * accompanied this code).+
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 *+
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 * You should have received a copy of the GNU General Public License version+
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 * 2 along with this work; if not, write to the Free Software Foundation,+
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.+
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 *+
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,+
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 * CA 95054 USA or visit www.sun.com if you need additional information or+
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 * have any questions.+
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 */+
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import javax.script.*;+
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+
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/**+
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 * Helper class to consolidate testing requirements for a js engine.+
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 * A js engine is required as part of Sun's product JDK.+
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 */+
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public class Helper {+
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    private Helper() {}; // Don't instantiate+
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+
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    public static ScriptEngine getJsEngine(ScriptEngineManager m) {+
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        ScriptEngine e  = m.getEngineByName("js");+
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        if (e == null &&+
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            System.getProperty("java.runtime.name").startsWith("Java(TM)")) {+
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            // A js engine is requied for Sun's product JDK+
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            throw new RuntimeException("no js engine found");+
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        }+
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        return e;+
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    }+
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}+
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