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Java > Open Source Codes > net > sf > retrotranslator > runtime > java > io > _Flushable


1 /***
2  * Retrotranslator: a Java bytecode transformer that translates Java classes
3  * compiled with JDK 5.0 into classes that can be run on JVM 1.4.
4  *
5  * Copyright (c) 2005 - 2007 Taras Puchko
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in the
15  * documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the copyright holders nor the names of its
17  * contributors may be used to endorse or promote products derived from
18  * this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30  * THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 package net.sf.retrotranslator.runtime.java.io;
33
34 import java.io.*;
35
36 /**
37  * @author Taras Puchko
38  */
39 public class _Flushable {
40
41     public static boolean executeInstanceOfInstruction(Object JavaDoc object) {
42         return object instanceof OutputStream ||
43                 object instanceof Writer ||
44                 object instanceof Flushable_;
45     }
46
47     public static Object JavaDoc executeCheckCastInstruction(Object JavaDoc object) {
48         if (object instanceof OutputStream) {
49             return (OutputStream) object;
50         }
51         if (object instanceof Writer) {
52             return (Writer) object;
53         }
54         return (Flushable_) object;
55     }
56
57     public static void flush(Object JavaDoc object) throws IOException {
58         if (object instanceof OutputStream) {
59             ((OutputStream) object).flush();
60         } else if (object instanceof Writer) {
61             ((Writer) object).flush();
62         } else {
63             ((Flushable_) object).flush();
64         }
65     }
66
67 }
68
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