1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/*
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package jdk.nashorn.internal.ir;
import java.util.List;
import jdk.nashorn.internal.codegen.Label;
/**
* This class represents a node from which control flow can execute
* a {@code break} statement
*/
public interface BreakableNode extends LexicalContextNode {
public abstract Node ensureUniqueLabels(final LexicalContext lc);
/**
* Check whether this can be broken out from without using a label,
* e.g. everything but Blocks, basically
* @return true if breakable without label
*/
public boolean isBreakableWithoutLabel();
/**
* Return the break label, i.e. the location to go to on break.
* @return the break label
*/
public Label getBreakLabel();
/**
* Return the labels associated with this node. Breakable nodes that
* aren't LoopNodes only have a break label - the location immediately
* afterwards the node in code
* @return list of labels representing locations around this node
*/
public List<Label> getLabels();
}
|
