01: /***
02: * ASM Guide
03: * Copyright (c) 2007 Eric Bruneton
04: * All rights reserved.
05: *
06: * Redistribution and use in source and binary forms, with or without
07: * modification, are permitted provided that the following conditions
08: * are met:
09: * 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: */package ch5.sec1;
30:
31: import static org.objectweb.asm.Opcodes.ACC_ABSTRACT;
32: import static org.objectweb.asm.Opcodes.ACC_FINAL;
33: import static org.objectweb.asm.Opcodes.ACC_INTERFACE;
34: import static org.objectweb.asm.Opcodes.ACC_PUBLIC;
35: import static org.objectweb.asm.Opcodes.ACC_STATIC;
36: import static org.objectweb.asm.Opcodes.V1_5;
37:
38: import java.io.PrintWriter;
39:
40: import org.objectweb.asm.ClassWriter;
41: import org.objectweb.asm.tree.ClassNode;
42: import org.objectweb.asm.tree.FieldNode;
43: import org.objectweb.asm.tree.MethodNode;
44:
45: /**
46: * ASM Guide example class.
47: *
48: * @author Eric Bruneton
49: */
50: public class ComparableGenerator {
51:
52: public byte[] generate(PrintWriter printWriter) {
53: ClassNode cn = new ClassNode();
54: cn.version = V1_5;
55: cn.access = ACC_PUBLIC + ACC_ABSTRACT + ACC_INTERFACE;
56: cn.name = "pkg/Comparable";
57: cn.super Name = "java/lang/Object";
58: cn.interfaces.add("pkg/Mesurable");
59: cn.sourceFile = "Comparable.java";
60: cn.fields.add(new FieldNode(
61: ACC_PUBLIC + ACC_FINAL + ACC_STATIC, "LESS", "I", null,
62: new Integer(-1)));
63: cn.fields.add(new FieldNode(
64: ACC_PUBLIC + ACC_FINAL + ACC_STATIC, "EQUAL", "I",
65: null, new Integer(0)));
66: cn.fields.add(new FieldNode(
67: ACC_PUBLIC + ACC_FINAL + ACC_STATIC, "GREATER", "I",
68: null, new Integer(1)));
69: cn.methods.add(new MethodNode(ACC_PUBLIC + ACC_ABSTRACT,
70: "compareTo", "(Ljava/lang/Object;)I", null, null));
71: ClassWriter cw = new ClassWriter(0);
72: cn.accept(cw);
73: return cw.toByteArray();
74: }
75: }
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