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1
32
33 package com.jeantessier.classreader;
34
35 import java.io.*;
36 import java.util.*;
37
38 import org.apache.log4j.*;
39 import org.apache.oro.text.perl.*;
40
41 public class ConstantPool extends ArrayList implements Visitable {
42 private Classfile classfile;
43
44 public ConstantPool(Classfile classfile, DataInputStream in) throws IOException {
45 this.classfile = classfile;
46
47 int count = in.readUnsignedShort();
48
49 ensureCapacity(count);
50
51 add(null);
53
54 for (int i=1; i<count; i++) {
55 byte tag = in.readByte();
56
57 switch(tag) {
58 case ConstantPoolEntry.CONSTANT_Class:
59 add(new Class_info(this, in));
60 break;
61 case ConstantPoolEntry.CONSTANT_Fieldref:
62 add(new FieldRef_info(this, in));
63 break;
64 case ConstantPoolEntry.CONSTANT_Methodref:
65 add(new MethodRef_info(this, in));
66 break;
67 case ConstantPoolEntry.CONSTANT_InterfaceMethodref:
68 add(new InterfaceMethodRef_info(this, in));
69 break;
70 case ConstantPoolEntry.CONSTANT_String:
71 add(new String_info(this, in));
72 break;
73 case ConstantPoolEntry.CONSTANT_Integer:
74 add(new Integer_info(this, in));
75 break;
76 case ConstantPoolEntry.CONSTANT_Float:
77 add(new Float_info(this, in));
78 break;
79 case ConstantPoolEntry.CONSTANT_Long:
80 add(new Long_info(this, in));
81 i++;
82 add(null);
83 break;
84 case ConstantPoolEntry.CONSTANT_Double:
85 add(new Double_info(this, in));
86 i++;
87 add(null);
88 break;
89 case ConstantPoolEntry.CONSTANT_NameAndType:
90 add(new NameAndType_info(this, in));
91 break;
92 case ConstantPoolEntry.CONSTANT_Utf8:
93 add(new UTF8_info(this, in));
94 break;
95 default:
96 Logger.getLogger(getClass()).info("Unknown Tag " + tag);
97 break;
98 }
99 }
100 }
101
102 public Classfile getClassfile() {
103 return classfile;
104 }
105
106 public void accept(Visitor visitor) {
107 visitor.visitConstantPool(this);
108 }
109
110 public String  toString() {
111 StringWriter out = new StringWriter();
112 PrintWriter writer = new PrintWriter(out);
113
114 writer.println("Constant Pool:");
115
116 Printer printer = new TextPrinter(writer);
117 accept(printer);
118
119 writer.close();
120
121 return out.toString();
122 }
123 }
124 |
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