/* * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. * 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 * questions. */ package javax.script; import java.util.Map;import java.io.Reader; /** * The optional interface implemented by ScriptEngines whose methods compile scripts * to a form that can be executed repeatedly without recompilation. * * @author Mike Grogan * @since 1.6 */public interface Compilable {    /**     * Compiles the script (source represented as a <code>String</code>) for     * later execution.     *     * @param script The source of the script, represented as a <code>String</code>.     *     * @return An subclass of <code>CompiledScript</code> to be executed later using one     * of the <code>eval</code> methods of <code>CompiledScript</code>.     *     * @throws ScriptException if compilation fails.     * @throws NullPointerException if the argument is null.     *     */     public CompiledScript compile(String script) throws            ScriptException;     /**     * Compiles the script (source read from <code>Reader</code>) for     * later execution.  Functionality is identical to     * <code>compile(String)</code> other than the way in which the source is     * passed.     *     * @param script The reader from which the script source is obtained.     *     * @return An implementation of <code>CompiledScript</code> to be executed     * later using one of its <code>eval</code> methods of <code>CompiledScript</code>.     *     * @throws ScriptException if compilation fails.     * @throws NullPointerException if argument is null.     */    public CompiledScript compile(Reader script) throws            ScriptException;}