/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

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 */

package com.sun.script.javascript;

import javax.script.*;

import java.util.*;

import sun.org.mozilla.javascript.internal.*;

import com.sun.script.util.*;

/**

 * Factory to create RhinoScriptEngine

 *

 * @author Mike Grogan

 * @since 1.6

 */

public class RhinoScriptEngineFactory extends ScriptEngineFactoryBase {

    public RhinoScriptEngineFactory() {

    }

    public List<String> getExtensions() {

        return extensions;

    }

    public List<String> getMimeTypes() {

        return mimeTypes;

    }

    public List<String> getNames() {

        return names;

    }

    public Object getParameter(String key) {

        if (key.equals(ScriptEngine.NAME)) {

            return "javascript";

        } else if (key.equals(ScriptEngine.ENGINE)) {

            return "Mozilla Rhino";

        } else if (key.equals(ScriptEngine.ENGINE_VERSION)) {

            return "1.7 release 3 PRERELEASE";

        } else if (key.equals(ScriptEngine.LANGUAGE)) {

            return "ECMAScript";

        } else if (key.equals(ScriptEngine.LANGUAGE_VERSION)) {

            return "1.8";

        } else if (key.equals("THREADING")) {

            return "MULTITHREADED";

        } else {

            throw new IllegalArgumentException("Invalid key");

        }

    }

    public ScriptEngine getScriptEngine() {

        RhinoScriptEngine ret = new RhinoScriptEngine();

        ret.setEngineFactory(this);

        return ret;

    }

    public String getMethodCallSyntax(String obj, String method, String... args) {

        String ret = obj + "." + method + "(";

        int len = args.length;

        if (len == 0) {

            ret += ")";

            return ret;

        }

        for (int i = 0; i < len; i++) {

            ret += args[i];

            if (i != len - 1) {

                ret += ",";

            } else {

                ret += ")";

            }

        }

        return ret;

    }

    public String getOutputStatement(String toDisplay) {

        StringBuffer buf = new StringBuffer();

        int len = toDisplay.length();

        buf.append("print(\"");

        for (int i = 0; i < len; i++) {

            char ch = toDisplay.charAt(i);

            switch (ch) {

            case '"':

                buf.append("\\\"");

                break;

            case '\\':

                buf.append("\\\\");

                break;

            default:

                buf.append(ch);

                break;

            }

        }

        buf.append("\")");

        return buf.toString();

    }

    public String getProgram(String... statements) {

        int len = statements.length;

        String ret = "";

        for (int i = 0; i < len; i++) {

            ret += statements[i] + ";";

        }

        return ret;

    }

    /*

    public static void main(String[] args) {

        RhinoScriptEngineFactory fact = new RhinoScriptEngineFactory();

        System.out.println(fact.getParameter(ScriptEngine.ENGINE_VERSION));

    }

    */

    private static List<String> names;

    private static List<String> mimeTypes;

    private static List<String> extensions;

    static {

        names = new ArrayList<String>(6);

        names.add("js");

        names.add("rhino");

        names.add("JavaScript");

        names.add("javascript");

        names.add("ECMAScript");

        names.add("ecmascript");

        names = Collections.unmodifiableList(names);

        mimeTypes = new ArrayList<String>(4);

        mimeTypes.add("application/javascript");

        mimeTypes.add("application/ecmascript");

        mimeTypes.add("text/javascript");

        mimeTypes.add("text/ecmascript");

        mimeTypes = Collections.unmodifiableList(mimeTypes);

        extensions = new ArrayList<String>(1);

        extensions.add("js");

        extensions = Collections.unmodifiableList(extensions);

    }

}