1 /*
2  * Copyright (c) 1994, 2003, 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 sun.tools.tree;
27 
28 import sun.tools.java.*;
29 import sun.tools.asm.Label;
30 
31 /**
32  * WARNING: The contents of this source file are not part of any
33  * supported API.  Code that depends on them does so at its own risk:
34  * they are subject to change or removal without notice.
35  */
36 class CodeContext extends Context {
37     Label breakLabel;
38     Label contLabel;
39 
40     /**
41      * Create a new nested context, for a block statement
42      */
CodeContext(Context ctx, Node node)43     CodeContext(Context ctx, Node node) {
44         super(ctx, node);
45         switch (node.op) {
46           case DO:
47           case WHILE:
48           case FOR:
49           case FINALLY:
50           case SYNCHRONIZED:
51             this.breakLabel = new Label();
52             this.contLabel = new Label();
53             break;
54           case SWITCH:
55           case TRY:
56           case INLINEMETHOD:
57           case INLINENEWINSTANCE:
58             this.breakLabel = new Label();
59             break;
60           default:
61             if ((node instanceof Statement) && (((Statement)node).labels != null)) {
62                 this.breakLabel = new Label();
63             }
64         }
65     }
66 }
67