1 /*
   2  * Copyright (c) 2008, 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 com.sun.scenario.effect.compiler.parser;
  27 
  28 import com.sun.scenario.effect.compiler.JSLParser;
  29 import com.sun.scenario.effect.compiler.tree.BreakStmt;
  30 import com.sun.scenario.effect.compiler.tree.ContinueStmt;
  31 import com.sun.scenario.effect.compiler.tree.DiscardStmt;
  32 import com.sun.scenario.effect.compiler.tree.LiteralExpr;
  33 import com.sun.scenario.effect.compiler.tree.ReturnStmt;
  34 import com.sun.scenario.effect.compiler.tree.Stmt;
  35 import org.antlr.runtime.RecognitionException;
  36 import org.junit.Test;
  37 import static org.junit.Assert.assertEquals;
  38 import static org.junit.Assert.assertNull;
  39 import static org.junit.Assert.assertTrue;
  40 
  41 public class JumpStatementTest extends ParserBase {
  42 
  43     @Test
  44     public void cont() throws Exception {
  45         Stmt tree = parseTreeFor("continue;");
  46         assertTrue(tree instanceof ContinueStmt);
  47     }
  48 
  49     @Test
  50     public void brk() throws Exception {
  51         Stmt tree = parseTreeFor(" break ; ");
  52         assertTrue(tree instanceof BreakStmt);
  53     }
  54 
  55     @Test
  56     public void discard() throws Exception {
  57         Stmt tree = parseTreeFor("discard;");
  58         assertTrue(tree instanceof DiscardStmt);
  59     }
  60 
  61     @Test
  62     public void returnEmpty() throws Exception {
  63         Stmt tree = parseTreeFor("return;");
  64         assertTrue(tree instanceof ReturnStmt);
  65         assertNull(((ReturnStmt)tree).getExpr());
  66     }
  67 
  68     @Test
  69     public void returnExpr() throws Exception {
  70         Stmt tree = parseTreeFor("return 3;");
  71         assertTrue(tree instanceof ReturnStmt);
  72         ReturnStmt ret = (ReturnStmt)tree;
  73         assertTrue(ret.getExpr() instanceof LiteralExpr);
  74         LiteralExpr lit = (LiteralExpr)ret.getExpr();
  75         assertEquals(lit.getValue(), new Integer(3));
  76     }
  77 
  78     @Test(expected = RecognitionException.class)
  79     public void notAJump() throws Exception {
  80         parseTreeFor("float;");
  81     }
  82 
  83     private Stmt parseTreeFor(String text) throws RecognitionException {
  84         JSLParser parser = parserOver(text);
  85         return parser.jump_statement();
  86     }
  87 }