1 package serp.bytecode;
2
3 import java.io.*;
4
5 import serp.bytecode.visitor.*;
6
7 /***
8 * The <code>ret</code> instruction is used in the implementation of finally.
9 *
10 * @author Abe White
11 */
12 public class RetInstruction extends LocalVariableInstruction {
13 RetInstruction(Code owner) {
14 super(owner, Constants.RET);
15 }
16
17 int getLength() {
18 return super.getLength() + 1;
19 }
20
21 public boolean equalsInstruction(Instruction other) {
22 if (this == other)
23 return true;
24 if (!(other instanceof RetInstruction))
25 return false;
26 return super.equalsInstruction(other);
27 }
28
29 public void acceptVisit(BCVisitor visit) {
30 visit.enterRetInstruction(this);
31 visit.exitRetInstruction(this);
32 }
33
34 void read(DataInput in) throws IOException {
35 super.read(in);
36 setLocal(in.readUnsignedByte());
37 }
38
39 void write(DataOutput out) throws IOException {
40 super.write(out);
41 out.writeByte(getLocal());
42 }
43 }