01: /*
02: * Copyright 2007 Google Inc.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License"); you may not
05: * use this file except in compliance with the License. You may obtain a copy of
06: * the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12: * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13: * License for the specific language governing permissions and limitations under
14: * the License.
15: */
16: package com.google.gwt.dev.jjs.ast;
17:
18: import com.google.gwt.dev.jjs.SourceInfo;
19:
20: /**
21: * Java break statement.
22: */
23: public class JBreakStatement extends JStatement {
24:
25: private final JLabel label;
26:
27: public JBreakStatement(JProgram program, SourceInfo info,
28: JLabel label) {
29: super (program, info);
30: this .label = label;
31: }
32:
33: public JLabel getLabel() {
34: return label;
35: }
36:
37: public void traverse(JVisitor visitor, Context ctx) {
38: if (visitor.visit(this , ctx)) {
39: if (label != null) {
40: visitor.accept(label);
41: }
42: }
43: visitor.endVisit(this , ctx);
44: }
45:
46: @Override
47: public boolean unconditionalControlBreak() {
48: // It's only an unconditional break if the label is null, because a label
49: // can label the break statement itself! We could handle this case.
50: return label == null;
51: }
52: }
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