| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.openide.execution; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.Collections; |
| import org.openide.ServiceType; |
| import org.openide.filesystems.FileObject; |
| import org.openide.util.Lookup; |
| |
| /** |
| * Base class for scripting interpreters. |
| * @author dstrupl |
| * @deprecated Was used only in obsolete modules. |
| */ |
| public abstract class ScriptType extends org.openide.ServiceType { |
| |
| /** generated Serialized Version UID */ |
| private static final long serialVersionUID = 4893207884933024341L; |
| |
| /** |
| * The script type can decide whether it will be able to execute |
| * the given file object. |
| * @param fo a file to test |
| * @return true if the script can operate on this file |
| */ |
| public abstract boolean acceptFileObject(FileObject fo); |
| |
| /** |
| * Evaluate the script given in the form of a Reader. |
| * @param r |
| * @param context |
| * @return whatever is the result of the script. It can be null. |
| */ |
| public abstract Object eval(java.io.Reader r, Context context) throws InvocationTargetException; |
| |
| /** Calls eval(Reader, Context) with getDefaultContext() as |
| * the second argument. |
| */ |
| public final Object eval(java.io.Reader r) throws InvocationTargetException { |
| return eval(r, getDefaultContext()); |
| } |
| |
| /** |
| * Evaluate the script given in the form of a string. |
| * @param script |
| * @param context |
| * @return whatever is the result of the script. It can be null. |
| */ |
| public abstract Object eval(String script, Context context) throws InvocationTargetException; |
| |
| /** Calls eval(String, Context) with getDefaultContext() as |
| * the second argument. |
| */ |
| public final Object eval(String script) throws InvocationTargetException { |
| return eval(script, getDefaultContext()); |
| } |
| |
| /** |
| * Execute the script given in the form of a Reader. |
| * @param r the contents of the script |
| * @param context the context in which to evaluate it |
| */ |
| public abstract void exec(java.io.Reader r, Context context) throws InvocationTargetException; |
| |
| /** Calls exec(Reader, Context) with getDefaultContext() as |
| * the second argument. |
| */ |
| public final void exec(java.io.Reader r) throws InvocationTargetException { |
| exec(r, getDefaultContext()); |
| } |
| |
| /** |
| * Execute the script given in the form of a string. |
| * @param script |
| * @param context |
| * @return whatever is the result of the script. It can be null. |
| */ |
| public abstract void exec(String script, Context context) throws InvocationTargetException; |
| |
| /** Calls exec(String, Context) with getDefaultContext() as |
| * the second argument. |
| */ |
| public final void exec(String script) throws InvocationTargetException { |
| exec(script, getDefaultContext()); |
| } |
| |
| /** |
| * Adds variable with name to the variables known by the script type. |
| * @param name the name for the newly created variable |
| * @param value initial value variable value (can be null). |
| */ |
| public abstract void addVariable(String name, Object value); |
| |
| /** Get all registered script types. |
| * @return enumeration of <code>ScriptType</code>s |
| * @deprecated Please use {@link org.openide.util.Lookup} instead. |
| */ |
| public static java.util.Enumeration scriptTypes () { |
| return Collections.enumeration(Lookup.getDefault().lookup(new Lookup.Template(ScriptType.class)).allInstances()); |
| } |
| |
| /** |
| * Find the script type implemented as a given class. |
| * @param clazz the class of the script type looked for |
| * @return the desired script type or <code>null</code> if it does not exist |
| * @deprecated Please use {@link org.openide.util.Lookup} instead. |
| */ |
| public static ScriptType find (Class clazz) { |
| return (ScriptType)Lookup.getDefault().lookup(clazz); |
| } |
| |
| /** |
| * Find the script type with requested name. |
| * @param name (display) name of script type to find |
| * @return the desired script type or <code>null</code> if it does not exist |
| */ |
| public static ScriptType find (String name) { |
| ServiceType t = ((ServiceType.Registry)Lookup.getDefault().lookup(ServiceType.Registry.class)).find (name); |
| if (t instanceof ScriptType) { |
| return (ScriptType)t; |
| } else { |
| return null; |
| } |
| } |
| |
| /** Get the default script type. |
| * @return the default script type |
| * @deprecated Probably meaningless, find all available types and filter with {@link #acceptFileObject} instead. |
| */ |
| public static ScriptType getDefault () { |
| java.util.Enumeration en = scriptTypes (); |
| if (en.hasMoreElements()) { |
| return (ScriptType)en.nextElement (); |
| } else { |
| throw new RuntimeException("No script type registered."); // NOI18N |
| } |
| } |
| |
| static Context getDefaultContext() { |
| return new Context(); |
| } |
| |
| /** Scripting context. |
| * Using instances of this class you can add additional parameters |
| * to the script execution using methods eval or exec. |
| */ |
| public static class Context { |
| } |
| } |