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1 package alt.jiapi.file;
2
3 import java.io.ByteArrayOutputStream  ;
4 import java.io.DataInputStream ;
5 import java.io.DataOutputStream ;
6 import java.io.IOException ;
7 import java.util.List ;
8 import java.util.LinkedList ;
9 import java.util.Iterator ;
10
11
17 public class LocalVariableTableAttribute extends Attribute {
18 public static final String ATTRIBUTE_NAME = "LocalVariableTable";
19 private List localVariables = new LinkedList ();
20
21 public LocalVariableTableAttribute(ConstantPool cp) {
22 super(cp.addUtf8Info(ATTRIBUTE_NAME).getEntryIndex());
23 setConstantPool(cp);
24 }
25
26 LocalVariableTableAttribute(short nameIndex, DataInputStream dis) throws IOException {
27 super(nameIndex);
28 short l = dis.readShort();
29 for(int i = 0; i < l; i++) {
30 short start_pc = dis.readShort();
31 short length = dis.readShort();
32 short name_index = dis.readShort();
33 short descriptor_index = dis.readShort();
34 short index = dis.readShort();
35
36 localVariables.add(new LocalVariable(start_pc, length, name_index,
37 descriptor_index, index));
38 }
39 }
40
41 public List getLocalVariables() {
42 return localVariables;
43 }
44
45
46 public byte[] getBytes() {
47 ByteArrayOutputStream baos = new ByteArrayOutputStream ();
48 DataOutputStream dos = new DataOutputStream (baos);
49
50 try {
51 dos.writeShort(localVariables.size());
52
53 Iterator i = localVariables.iterator();
54 while(i.hasNext()) {
55 LocalVariable lvte=(LocalVariable)i.next();
56 dos.writeShort(lvte.getStartPc());
57 dos.writeShort(lvte.getLength());
58 dos.writeShort(lvte.getNameIndex());
59 dos.writeShort(lvte.getDescriptorIndex());
60 dos.writeShort(lvte.getIndex());
61 }
62 }
63 catch(IOException ioe) {
64 throw new RuntimeException (ioe);
66 }
67
68 return baos.toByteArray();
69 }
70
71
72 public class LocalVariable {
73 private short start_pc;
74 private short length;
75 private short name_index;
76 private short descriptor_index;
77 private short index;
78
79 LocalVariable(short start_pc, short length, short name_index,
80 short descriptor_index, short index) {
81 this.start_pc = start_pc;
82 this.length = length;
83 this.name_index = name_index;
84 this.descriptor_index = descriptor_index;
85 this.index = index;
86 }
87
88 public short getStartPc() {
89 return start_pc;
90 }
91
92 public short getLength() {
93 return length;
94 }
95
96 public String getName() {
97 return cp.getUtf8(name_index);
98 }
99
100 short getNameIndex() {
101 return name_index;
102 }
103
104 public String getDescriptor() {
105 return cp.getUtf8(descriptor_index);
106 }
107
108 short getDescriptorIndex() {
109 return descriptor_index;
110 }
111
112 public short getIndex() {
113 return index;
114 }
115 }
116 }
117
118 |
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