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Java > Open Source Codes > org > ablaf > internal > ast > SerializationAstMarshal


1 /***** BEGIN LICENSE BLOCK *****
2  * Version: CPL 1.0/GPL 2.0/LGPL 2.1
3  *
4  * The contents of this file are subject to the Common Public
5  * License Version 1.0 (the "License"); you may not use this file
6  * except in compliance with the License. You may obtain a copy of
7  * the License at http://www.eclipse.org/legal/cpl-v10.html
8  *
9  * Software distributed under the License is distributed on an "AS
10  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
11  * implied. See the License for the specific language governing
12  * rights and limitations under the License.
13  *
14  * Copyright (C) 2002-2004 Anders Bengtsson <ndrsbngtssn@yahoo.se>
15  * Copyright (C) 2002-2004 Jan Arne Petersen <jpetersen@uni-bonn.de>
16  * Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
17  * Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de>
18  *
19  * Alternatively, the contents of this file may be used under the terms of
20  * either of the GNU General Public License Version 2 or later (the "GPL"),
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30  ***** END LICENSE BLOCK *****/
31 package org.ablaf.internal.ast;
32
33 import java.io.IOException JavaDoc;
34 import java.io.InputStream JavaDoc;
35 import java.io.ObjectInputStream JavaDoc;
36 import java.io.ObjectOutputStream JavaDoc;
37 import java.io.OutputStream JavaDoc;
38
39 import org.ablaf.ast.IAstDecoder;
40 import org.ablaf.ast.IAstEncoder;
41 import org.ablaf.ast.IAstMarshal;
42 import org.jruby.ast.Node;
43
44 /**
45  *
46  * @author jpetersen
47  */
48 public class SerializationAstMarshal implements IAstMarshal {
49     /**
50      * @see org.ablaf.ast.IAstMarshal#openEncoder(OutputStream)
51      */
52     public IAstEncoder openEncoder(OutputStream JavaDoc output) throws IOException JavaDoc {
53         final ObjectOutputStream JavaDoc oout = new ObjectOutputStream JavaDoc(output);
54         return new IAstEncoder() {
55             public void writeNode(Node node) throws IOException JavaDoc {
56                 oout.writeObject(node);
57             }
58         
59             public void close() throws IOException JavaDoc {
60                 oout.close();
61             }
62         };
63     }
64
65     /**
66      * @see org.ablaf.ast.IAstMarshal#openDecoder(InputStream)
67      */
68     public IAstDecoder openDecoder(InputStream JavaDoc input) throws IOException JavaDoc {
69         final ObjectInputStream JavaDoc oin = new ObjectInputStream JavaDoc(input);
70         return new IAstDecoder() {
71             public Node readNode() throws IOException JavaDoc {
72                 try {
73                     return (Node) oin.readObject();
74                 } catch (ClassNotFoundException JavaDoc e) {
75                     throw (IOException JavaDoc) new IOException JavaDoc("Missing AST class: " + e.getMessage()).initCause(e);
76                 }
77             }
78
79             public void close() throws IOException JavaDoc {
80                 oin.close();
81             }
82         };
83     }
84 }
85
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