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.model.Type;
  30 import com.sun.scenario.effect.compiler.tree.BinaryExpr;
  31 import com.sun.scenario.effect.compiler.tree.ExprStmt;
  32 import com.sun.scenario.effect.compiler.tree.LiteralExpr;
  33 import com.sun.scenario.effect.compiler.tree.SelectStmt;
  34 import com.sun.scenario.effect.compiler.tree.Stmt;
  35 import org.antlr.runtime.RecognitionException;
  36 import org.junit.Test;
  37 
  38 import static org.junit.Assert.*;
  39 
  40 public class SelectionStatementTest extends ParserBase {
  41 
  42     @Test
  43     public void ifOnly() throws Exception {
  44         Stmt tree = parseTreeFor("if (foo >= 3) foo += 12;");
  45         assertTrue(tree instanceof SelectStmt);
  46         SelectStmt s = (SelectStmt)tree;
  47         assertTrue(s.getIfExpr() instanceof BinaryExpr);
  48         assertTrue(s.getThenStmt() instanceof ExprStmt);
  49         assertNull(s.getElseStmt());
  50     }
  51 
  52     @Test
  53     public void ifAndElse() throws Exception {
  54         Stmt tree = parseTreeFor("if (true) foo+=5; else --foo;");
  55         assertTrue(tree instanceof SelectStmt);
  56         SelectStmt s = (SelectStmt)tree;
  57         assertTrue(s.getIfExpr() instanceof LiteralExpr);
  58         assertTrue(s.getThenStmt() instanceof ExprStmt);
  59         assertTrue(s.getElseStmt() instanceof ExprStmt);
  60     }
  61 
  62     @Test(expected = RecognitionException.class)
  63     public void notASelect() throws Exception {
  64         parseTreeFor("then (so) { bobs yer uncle }");
  65     }
  66 
  67     private Stmt parseTreeFor(String text) throws RecognitionException {
  68         JSLParser parser = parserOver(text);
  69         parser.getSymbolTable().declareVariable("foo", Type.INT, null);
  70         return parser.selection_statement();
  71     }
  72 }