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Java > Open Source Codes > org > armedbear > lisp > SocketStream


1 /*
2  * SocketStream.java
3  *
4  * Copyright (C) 2004 Peter Graves
5  * $Id: SocketStream.java,v 1.2 2004/06/22 23:07:46 piso Exp $
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
9  * as published by the Free Software Foundation; either version 2
10  * of the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20  */
21
22 package org.armedbear.lisp;
23
24 import java.net.Socket JavaDoc;
25
26 public final class SocketStream extends TwoWayStream
27 {
28     private final Socket JavaDoc socket;
29
30     public SocketStream(Socket JavaDoc socket, Stream in, Stream out)
31     {
32     super(in, out);
33         this.socket = socket;
34     }
35
36     public LispObject typeOf()
37     {
38         return Symbol.SOCKET_STREAM;
39     }
40
41     public LispClass classOf()
42     {
43         return BuiltInClass.SOCKET_STREAM;
44     }
45
46     public LispObject typep(LispObject type) throws ConditionThrowable
47     {
48         if (type == Symbol.SOCKET_STREAM)
49             return T;
50         if (type == BuiltInClass.SOCKET_STREAM)
51             return T;
52         return super.typep(type);
53     }
54
55     public LispObject close(LispObject abort) throws ConditionThrowable
56     {
57     try {
58         socket.close();
59         setOpen(false);
60         return T;
61     } catch (Exception JavaDoc e) {
62         return signal(new LispError(e.getMessage()));
63     }
64     }
65
66     public String JavaDoc toString()
67     {
68         return unreadableString("SOCKET-STREAM");
69     }
70 }
71
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