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25
26
27 package soot.tagkit;
28 import soot.options.*;
29
30 import java.util.*;
31 import soot.baf.*;
32 import soot.*;
33
34
35
39 public class CodeAttribute extends JasminAttribute
40 {
41 protected List mUnits;
42 protected List mTags;
43
44 private byte[] value;
45
46 private String  name = "CodeAtribute";
47
48 public CodeAttribute(){}
49
50
51 public CodeAttribute(String name)
52 {
53 this.name = name;
54 }
55
56
57 public CodeAttribute(String name, List units, List tags)
58 {
59 this.name = name;
60 this.mUnits = units;
61 this.mTags = tags;
62 }
63
64
65 public String toString()
66 {
67 return name;
68 }
69
70
71 public String getName()
72 {
73 return name;
74 }
75
76
77 public void setValue(byte[] v)
78 {
79 this.value = v;
80 }
81
82
83 public byte[] getValue() throws AttributeValueException
84 {
85 if (value == null)
86 throw new AttributeValueException();
87 else
88 return value;
89 }
90
91
92 public String getJasminValue(Map instToLabel)
93 {
94 StringBuffer buf = new StringBuffer ();
97
98 if (mTags.size() != mUnits.size())
99 throw new RuntimeException ("Sizes must match!");
100
101 Iterator tagIt = mTags.iterator();
102 Iterator unitIt = mUnits.iterator();
103
104 while (tagIt.hasNext())
105 {
106 Object unit = unitIt.next();
107 Object tag = tagIt.next();
108
109 buf.append("%"+instToLabel.get(unit) + "%"+
110 new String (Base64.encode(((Tag)tag).getValue())));
111 }
112
113 return buf.toString();
114 }
115
116
117 public List getUnitBoxes()
118 {
119 List unitBoxes = new ArrayList(mUnits.size());
120
121 Iterator it = mUnits.iterator();
122
123 while(it.hasNext()) {
124 unitBoxes.add(Baf.v().newInstBox((Unit)it.next()));
125 }
126
127 return unitBoxes;
128 }
129
130 public byte[] decode(String attr, Hashtable labelToPc)
131 {
132 if (Options.v().verbose())
133 G.v().out.println("[] JasminAttribute decode...");
134
135 List attributeHunks = new LinkedList();
136 int attributeSize = 0;
137
138 StringTokenizer st = new StringTokenizer(attr, "%");
139 boolean isLabel = false;
140 if(attr.startsWith("%"))
141 isLabel = true;
142
143 int tablesize = 0;
144
145 byte[] pcArray;
146 while(st.hasMoreTokens()) {
147 String token = st.nextToken();
148 if(isLabel) {
149 Integer pc = (Integer ) labelToPc.get(token);
150
151 if(pc == null)
152 throw new RuntimeException ("PC is null, the token is "+token);
153
154 int pcvalue = pc.intValue();
155 if(pcvalue > 65535)
156 throw new RuntimeException ("PC great than 65535, the token is "+token+" : " +pcvalue);
157
158 pcArray = new byte[2];
159
160 pcArray[1] = (byte)(pcvalue&0x0FF);
161
162 pcArray[0] = (byte)((pcvalue>>8)&0x0FF);
163
164 attributeHunks.add(pcArray);
165 attributeSize += 2;
166 tablesize++;
167 } else {
168
169 byte[] hunk = Base64.decode(token.toCharArray());
170 attributeSize += hunk.length;
171
172 attributeHunks.add(hunk);
173 }
174 isLabel = !isLabel;
175 }
176
177
178 attributeSize += 2;
179 byte[] attributeValue = new byte[attributeSize];
180 {
181 attributeValue[0] = (byte)((tablesize>>8)&0x0FF);
182 attributeValue[1] = (byte)(tablesize&0x0FF);
183 }
184 int index=2;
185 Iterator it = attributeHunks.iterator();
186 while(it.hasNext()) {
187 byte[] hunk = (byte[]) it.next();
188 for(int i = 0; i < hunk.length; i++) {
189 attributeValue[index++] = hunk[i];
190 }
191 }
192
193 if(index != (attributeSize))
194 throw new RuntimeException ("Index does not euqal to attrubute size :"+index+" -- "+attributeSize);
195
196 if (Options.v().verbose())
197 G.v().out.println("[] Jasmin.decode finished...");
198
199 return attributeValue;
200 }
201 }
202
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