KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > google > gwt > dev > jjs > ast > JCastOperation


1 /*
2  * Copyright 2007 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
5  * use this file except in compliance with the License. You may obtain a copy of
6  * the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
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 cast expression.
22  */
23 public class JCastOperation extends JExpression {
24
25   private JExpression expr;
26   private final JType castType;
27
28   public JCastOperation(JProgram program, SourceInfo info, JType castType,
29       JExpression expr) {
30     super(program, info);
31     this.castType = castType;
32     this.expr = expr;
33   }
34
35   public JType getCastType() {
36     return castType;
37   }
38
39   public JExpression getExpr() {
40     return expr;
41   }
42
43   public JType getType() {
44     return castType;
45   }
46
47   public boolean hasSideEffects() {
48     // Any live cast operations might throw a ClassCastException
49 //
50 // TODO: revisit this when we support the concept of whether something
51 // can/must complete normally!
52 return true;
53   }
54
55   public void traverse(JVisitor visitor, Context ctx) {
56     if (visitor.visit(this, ctx)) {
57       expr = visitor.accept(expr);
58     }
59     visitor.endVisit(this, ctx);
60   }
61
62 }
63
Popular Tags