1 /* 2 * Copyright (c) 2017, 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.test.models; 27 28 import jdk.nashorn.api.tree.SimpleTreeVisitorES6; 29 import jdk.nashorn.api.tree.*; 30 31 public class ES6ASTVisitor{ 32 33 public static void visit(String script) { 34 DiagnosticListener listener = (Diagnostic diag) -> { System.err.println(diag.toString()); }; 35 Parser parser = Parser.create("--language=es6","--empty-statements"); 36 Tree astRoot = parser.parse("unknown", script, listener); 37 astRoot.accept(new SimpleTreeVisitorES6<Boolean, Void>() { 38 @Override 39 public Boolean visitCompilationUnit(CompilationUnitTree stmt, Void none) { 40 for (Tree item : stmt.getSourceElements()) { 41 System.out.println(item.getStartPosition() + "-" + item.getEndPosition() + " " + item.getKind()); 42 } 43 return super.visitCompilationUnit(stmt, none); 44 } 45 46 }, null); 47 48 } 49 50 } 51