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 if statement.
22: */
23: public class JIfStatement extends JStatement {
24:
25: private JStatement elseStmt;
26: private JExpression ifExpr;
27: private JStatement thenStmt;
28:
29: public JIfStatement(JProgram program, SourceInfo info,
30: JExpression ifExpr, JStatement thenStmt, JStatement elseStmt) {
31: super (program, info);
32: this .ifExpr = ifExpr;
33: this .thenStmt = thenStmt;
34: this .elseStmt = elseStmt;
35: }
36:
37: public JStatement getElseStmt() {
38: return elseStmt;
39: }
40:
41: public JExpression getIfExpr() {
42: return ifExpr;
43: }
44:
45: public JStatement getThenStmt() {
46: return thenStmt;
47: }
48:
49: public void traverse(JVisitor visitor, Context ctx) {
50: if (visitor.visit(this , ctx)) {
51: ifExpr = visitor.accept(ifExpr);
52: if (thenStmt != null) {
53: thenStmt = visitor.accept(thenStmt);
54: }
55: if (elseStmt != null) {
56: elseStmt = visitor.accept(elseStmt);
57: }
58: }
59: visitor.endVisit(this , ctx);
60: }
61:
62: @Override
63: public boolean unconditionalControlBreak() {
64: if (thenStmt != null && thenStmt.unconditionalControlBreak()
65: && elseStmt != null
66: && elseStmt.unconditionalControlBreak()) {
67: return true;
68: }
69: return false;
70: }
71: }
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