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Java > Open Source Codes > com > caucho > es > parser > ConditionalExpr


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.es.parser;
30
31 import com.caucho.es.ESException;
32
33 import java.io.IOException JavaDoc;
34
35 /**
36  * Expr is an intermediate form representing an expression.
37  */
38 class ConditionalExpr extends Expr {
39   Expr cond;
40   Expr left;
41   Expr right;
42   
43   ConditionalExpr(Block block, Expr cond, Expr left, Expr right)
44   {
45     super(block);
46     
47     this.cond = cond;
48     this.left = left;
49     this.right = right;
50     this.type = TYPE_ES;
51
52     left.setUsed();
53     right.setUsed();
54   }
55
56   void exprStatement(Function fun) throws ESException
57   {
58     isTop = true;
59     fun.addExpr(this);
60   }
61
62   void printImpl() throws IOException JavaDoc
63   {
64     if (isTop)
65       cl.print("_env.doVoid(");
66
67     cl.print("(");
68     cond.printBoolean();
69     cl.print("?");
70     left.print();
71     cl.print(":");
72     right.print();
73     cl.print(")");
74     
75     if (isTop)
76       cl.println(")");
77   }
78 }
79
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