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Java > Open Source Codes > org > aspectj > compiler > base > ast > EmptyStmt


1 /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2  *
3  * This file is part of the compiler and core tools for the AspectJ(tm)
4  * programming language; see http://aspectj.org
5  *
6  * The contents of this file are subject to the Mozilla Public License
7  * Version 1.1 (the "License"); you may not use this file except in
8  * compliance with the License. You may obtain a copy of the License at
9  * either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the
14  * License.
15  *
16  * The Original Code is AspectJ.
17  *
18  * The Initial Developer of the Original Code is Xerox Corporation. Portions
19  * created by Xerox Corporation are Copyright (C) 1999-2002 Xerox Corporation.
20  * All Rights Reserved.
21  *
22  * Contributor(s):
23  */
24
25 package org.aspectj.compiler.base.ast;
26
27 import org.aspectj.compiler.base.*;
28
29 import org.aspectj.compiler.base.bcg.CodeBuilder;
30
31 /**
32   * @grammar ;
33   */
34
35 public class EmptyStmt extends Stmt {
36
37     /**
38       * when the -lenient option is used,
39       * we declare that empty stmts don't have to be live.
40       * This makes code like: return 2;;;;; legal.
41       */
42     public boolean mustBeLive() { return !getOptions().lenient; }
43
44     public void unparse(CodeWriter writer) {
45         writer.closeStmt();
46     }
47
48     // ------------------------------
49 // bcg
50
51     protected void cgStmt(CodeBuilder cb) {}
52
53     //BEGIN: Generated from @child and @property
54
55     public EmptyStmt(SourceLocation location) {
56         super(location);
57
58     }
59
60     public ASTObject copyWalk(CopyWalker walker) {
61         EmptyStmt ret = new EmptyStmt(getSourceLocation());
62         ret.preCopy(walker, this);
63
64         return ret;
65     }
66
67
68     public String JavaDoc getDefaultDisplayName() {
69         return "EmptyStmt()";
70     }
71
72     //END: Generated from @child and @property
73 }
74
75
76
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