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1
34
35 package org.logicalcobwebs.asm.util;
36
37 import org.logicalcobwebs.asm.CodeVisitor;
38 import org.logicalcobwebs.asm.Label;
39 import org.logicalcobwebs.asm.Attribute;
40
41 import java.util.HashMap  ;
42
43
47
48 public class TraceCodeVisitor extends PrintCodeVisitor {
49
50
54
55 protected final CodeVisitor cv;
56
57
60
61 private final HashMap labelNames;
62
63
69
70 public TraceCodeVisitor (final CodeVisitor cv) {
71 this.cv = cv;
72 this.labelNames = new HashMap ();
73 }
74
75 public void printInsn (final int opcode) {
76 buf.append(" ")
77 .append(OPCODES[opcode])
78 .append("\n");
79
80 if (cv != null) {
81 cv.visitInsn(opcode);
82 }
83 }
84
85 public void printIntInsn (final int opcode, final int operand) {
86 buf.append(" ")
87 .append(OPCODES[opcode])
88 .append(" ").append(operand)
89 .append("\n");
90
91 if (cv != null) {
92 cv.visitIntInsn(opcode, operand);
93 }
94 }
95
96 public void printVarInsn (final int opcode, final int var) {
97 buf.append(" ")
98 .append(OPCODES[opcode])
99 .append(" ")
100 .append(var)
101 .append("\n");
102
103 if (cv != null) {
104 cv.visitVarInsn(opcode, var);
105 }
106 }
107
108 public void printTypeInsn (final int opcode, final String desc) {
109 buf.append(" ")
110 .append(OPCODES[opcode])
111 .append(" ")
112 .append(desc)
113 .append("\n");
114
115 if (cv != null) {
116 cv.visitTypeInsn(opcode, desc);
117 }
118 }
119
120 public void printFieldInsn (
121 final int opcode,
122 final String owner,
123 final String name,
124 final String desc)
125 {
126 buf.append(" ")
127 .append(OPCODES[opcode])
128 .append(" ")
129 .append(owner)
130 .append(" ")
131 .append(name)
132 .append(" ")
133 .append(desc)
134 .append("\n");
135
136 if (cv != null) {
137 cv.visitFieldInsn(opcode, owner, name, desc);
138 }
139 }
140
141 public void printMethodInsn (
142 final int opcode,
143 final String owner,
144 final String name,
145 final String desc)
146 {
147 buf.append(" ")
148 .append(OPCODES[opcode])
149 .append(" ")
150 .append(owner)
151 .append(" ")
152 .append(name)
153 .append(" ")
154 .append(desc)
155 .append("\n");
156
157 if (cv != null) {
158 cv.visitMethodInsn(opcode, owner, name, desc);
159 }
160 }
161
162 public void printJumpInsn (final int opcode, final Label label) {
163 buf.append(" ")
164 .append(OPCODES[opcode]).
165 append(" ");
166 appendLabel(label);
167 buf.append("\n");
168
169 if (cv != null) {
170 cv.visitJumpInsn(opcode, label);
171 }
172 }
173
174 public void printLabel (final Label label) {
175 buf.append(" ");
176 appendLabel(label);
177 buf.append(":\n");
178
179 if (cv != null) {
180 cv.visitLabel(label);
181 }
182 }
183
184 public void printLdcInsn (final Object cst) {
185 buf.append(" LDC ");
186 if (cst instanceof String ) {
187 buf.append("\"").append(cst).append("\"");
188 } else {
189 buf.append(cst);
190 }
191 buf.append("\n");
192
193 if (cv != null) {
194 cv.visitLdcInsn(cst);
195 }
196 }
197
198 public void printIincInsn (final int var, final int increment) {
199 buf.append(" IINC ")
200 .append(var)
201 .append(" ")
202 .append(increment)
203 .append("\n");
204
205 if (cv != null) {
206 cv.visitIincInsn(var, increment);
207 }
208 }
209
210 public void printTableSwitchInsn (
211 final int min,
212 final int max,
213 final Label dflt,
214 final Label labels[])
215 {
216 buf.append(" TABLESWITCH\n");
217 for (int i = 0; i < labels.length; ++i) {
218 buf.append(" ")
219 .append(min + i)
220 .append(": ");
221 appendLabel(labels[i]);
222 buf.append("\n");
223 }
224 buf.append(" default: ");
225 appendLabel(dflt);
226 buf.append("\n");
227
228 if (cv != null) {
229 cv.visitTableSwitchInsn(min, max, dflt, labels);
230 }
231 }
232
233 public void printLookupSwitchInsn (
234 final Label dflt,
235 final int keys[],
236 final Label labels[])
237 {
238 buf.append(" LOOKUPSWITCH\n");
239 for (int i = 0; i < labels.length; ++i) {
240 buf.append(" ")
241 .append(keys[i])
242 .append(": ");
243 appendLabel(labels[i]);
244 buf.append("\n");
245 }
246 buf.append(" default: ");
247 appendLabel(dflt);
248 buf.append("\n");
249
250 if (cv != null) {
251 cv.visitLookupSwitchInsn(dflt, keys, labels);
252 }
253 }
254
255 public void printMultiANewArrayInsn (final String desc, final int dims) {
256 buf.append(" MULTIANEWARRAY ")
257 .append(desc)
258 .append(" ")
259 .append(dims)
260 .append("\n");
261
262 if (cv != null) {
263 cv.visitMultiANewArrayInsn(desc, dims);
264 }
265 }
266
267 public void printTryCatchBlock (
268 final Label start,
269 final Label end,
270 final Label handler,
271 final String type)
272 {
273 buf.append(" TRYCATCHBLOCK ");
274 appendLabel(start);
275 buf.append(" ");
276 appendLabel(end);
277 buf.append(" ");
278 appendLabel(handler);
279 buf.append(" ")
280 .append(type)
281 .append("\n");
282
283 if (cv != null) {
284 cv.visitTryCatchBlock(start, end, handler, type);
285 }
286 }
287
288 public void printMaxs (final int maxStack, final int maxLocals) {
289 buf.append(" MAXSTACK = ")
290 .append(maxStack)
291 .append("\n MAXLOCALS = ")
292 .append(maxLocals)
293 .append("\n\n");
294
295 if (cv != null) {
296 cv.visitMaxs(maxStack, maxLocals);
297 }
298 }
299
300 public void printLocalVariable (
301 final String name,
302 final String desc,
303 final Label start,
304 final Label end,
305 final int index)
306 {
307 buf.append(" LOCALVARIABLE ")
308 .append(name)
309 .append(" ")
310 .append(desc)
311 .append(" ");
312 appendLabel(start);
313 buf.append(" ");
314 appendLabel(end);
315 buf.append(" ")
316 .append(index)
317 .append("\n");
318
319 if (cv != null) {
320 cv.visitLocalVariable(name, desc, start, end, index);
321 }
322 }
323
324 public void printLineNumber (final int line, final Label start) {
325 buf.append(" LINENUMBER ")
326 .append(line)
327 .append(" ");
328 appendLabel(start);
329 buf.append("\n");
330
331 if (cv != null) {
332 cv.visitLineNumber(line, start);
333 }
334 }
335
336 public void printAttribute (final Attribute attr) {
337 buf.append(" CODE ATTRIBUTE ")
338 .append(attr.type)
339 .append("\n");
340
341 if (cv != null) {
342 cv.visitAttribute(attr);
343 }
344 }
345
346
352
353 private void appendLabel (final Label l) {
354 String name = (String )labelNames.get(l);
355 if (name == null) {
356 name = "L" + labelNames.size();
357 labelNames.put(l, name);
358 }
359 buf.append(name);
360 }
361 }
362 |
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