1 /* 2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.nashorn.ant; 27 28 import javax.script.ScriptEngine; 29 import javax.script.ScriptEngineManager; 30 import javax.script.ScriptException; 31 import org.apache.tools.ant.Project; 32 import org.apache.tools.ant.Task; 33 import org.apache.tools.ant.BuildException; 34 35 /** 36 * This class implements an ant task to evaluate nashorn scripts 37 * from ant projects. 38 */ 39 public final class NashornTask extends Task { 40 // Underlying nashorn script engine 41 private final ScriptEngine engine; 42 // the current ant project 43 private Project project; 44 // the script evaluated by this task 45 private String script; 46 47 public NashornTask() { 48 final ScriptEngineManager m = new ScriptEngineManager(); 49 this.engine = m.getEngineByName("nashorn"); 50 } 51 52 @Override 53 public void setProject(Project proj) { 54 this.project = proj; 55 } 56 57 // set the script to be evaluated 58 public void addText(String text) { 59 this.script = text; 60 } 61 62 @Override 63 public void execute() { 64 // expose project as "project" variable 65 engine.put("project", project); 66 // expose this task as "self" variable 67 engine.put("self", this); 68 69 // evaluate specified script 70 try { 71 engine.eval(script); 72 } catch (final ScriptException se) { 73 throw new BuildException(se); 74 } 75 } 76 }