1 /*
   2  * Copyright (c) 2015, 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.
   8  * 
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  * 
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  * 
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * Nashorn parser API --empty-statements option test.
  26  *
  27  * @test
  28  * @run
  29  */
  30 
  31 var SimpleTreeVisitor = Java.type("jdk.nashorn.api.tree.SimpleTreeVisitorES5_1");
  32 var Parser = Java.type("jdk.nashorn.api.tree.Parser");
  33 
  34 // with --empty-statements parse tree should contain
  35 // EmptyStatement tree nodes. Without this option, empty
  36 // statement Tree nodes may be optimized away by Parser.
  37 var emptyStatParser = Parser.create("--empty-statements");
  38 
  39 var emptyStat = ";";
  40 emptyStatParser.parse("empty.js", emptyStat, print).
  41     accept(new (Java.extend(SimpleTreeVisitor)) {
  42         visitEmptyStatement: function(node, p) {
  43             print("inside EmptyStatement visit");
  44         }
  45     }, null);