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1 /***
2  * ASM examples: examples showing how ASM can be used
3  * Copyright (c) 2000-2005 INRIA, France Telecom
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  * 3. Neither the name of the copyright holders nor the names of its
15  * contributors may be used to endorse or promote products derived from
16  * this software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28  * THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 import java.io.FileOutputStream JavaDoc;
31 import java.io.FileReader JavaDoc;
32 import java.io.IOException JavaDoc;
33 import java.io.PrintWriter JavaDoc;
34
35 import org.objectweb.asm.ClassWriter;
36 import org.objectweb.asm.jbfc.BFCompiler;
37 import org.objectweb.asm.util.TraceClassVisitor;
38
39 /**
40  * A naive implementation of compiler for Brain**** language.
41  * http://www.muppetlabs.com/~breadbox/bf/ *
42  *
43  * @author Eugene Kuleshov
44  */
45 public class jbfc {
46
47     public static void main(String JavaDoc[] args) throws IOException JavaDoc {
48         if (args.length < 2) {
49             System.out.println("Usage: jbfc [-v] <bf program file> <java class name>");
50             return;
51         }
52
53         boolean verbose = false;
54         String JavaDoc fileName = null;
55         String JavaDoc className = null;
56         for (int i = 0; i < args.length; i++) {
57             if ("-v".equals(args[i])) {
58                 verbose = true;
59             } else {
60                 fileName = args[i];
61                 className = args[i + 1];
62                 break;
63             }
64         }
65
66         FileReader JavaDoc r = new FileReader JavaDoc(fileName);
67
68         ClassWriter cw = new ClassWriter(true);
69         BFCompiler c = new BFCompiler();
70         if (verbose) {
71             c.compile(r, className, fileName, new TraceClassVisitor(cw,
72                     new PrintWriter JavaDoc(System.out)));
73         } else {
74             c.compile(r, className, fileName, cw);
75         }
76
77         r.close();
78
79         FileOutputStream JavaDoc os = new FileOutputStream JavaDoc(className + ".class");
80         os.write(cw.toByteArray());
81         os.flush();
82         os.close();
83     }
84
85 }
86
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