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30
31 package oracle.toplink.libraries.asm.util;
32
33 import oracle.toplink.libraries.asm.CodeVisitor;
34 import oracle.toplink.libraries.asm.Label;
35 import oracle.toplink.libraries.asm.Attribute;
36 import oracle.toplink.libraries.asm.Type;
37
38 import java.util.HashMap  ;
39
40
46
47 public class TraceCodeVisitor extends PrintCodeVisitor {
48
49
53
54 protected final CodeVisitor cv;
55
56
59
60 private final HashMap labelNames;
61
62
68
69 public TraceCodeVisitor (final CodeVisitor cv) {
70 this.cv = cv;
71 this.labelNames = new HashMap ();
72 }
73
74 public void printInsn (final int opcode) {
75 buf.append(" ")
76 .append(OPCODES[opcode])
77 .append("\n");
78
79 if (cv != null) {
80 cv.visitInsn(opcode);
81 }
82 }
83
84 public void printIntInsn (final int opcode, final int operand) {
85 buf.append(" ")
86 .append(OPCODES[opcode])
87 .append(" ").append(operand)
88 .append("\n");
89
90 if (cv != null) {
91 cv.visitIntInsn(opcode, operand);
92 }
93 }
94
95 public void printVarInsn (final int opcode, final int var) {
96 buf.append(" ")
97 .append(OPCODES[opcode])
98 .append(" ")
99 .append(var)
100 .append("\n");
101
102 if (cv != null) {
103 cv.visitVarInsn(opcode, var);
104 }
105 }
106
107 public void printTypeInsn (final int opcode, final String desc) {
108 buf.append(" ")
109 .append(OPCODES[opcode])
110 .append(" ")
111 .append(desc)
112 .append("\n");
113
114 if (cv != null) {
115 cv.visitTypeInsn(opcode, desc);
116 }
117 }
118
119 public void printFieldInsn (
120 final int opcode,
121 final String owner,
122 final String name,
123 final String desc)
124 {
125 buf.append(" ")
126 .append(OPCODES[opcode])
127 .append(" ")
128 .append(owner)
129 .append(" ")
130 .append(name)
131 .append(" ")
132 .append(desc)
133 .append("\n");
134
135 if (cv != null) {
136 cv.visitFieldInsn(opcode, owner, name, desc);
137 }
138 }
139
140 public void printMethodInsn (
141 final int opcode,
142 final String owner,
143 final String name,
144 final String desc)
145 {
146 buf.append(" ")
147 .append(OPCODES[opcode])
148 .append(" ")
149 .append(owner)
150 .append(" ")
151 .append(name)
152 .append(" ")
153 .append(desc)
154 .append("\n");
155
156 if (cv != null) {
157 cv.visitMethodInsn(opcode, owner, name, desc);
158 }
159 }
160
161 public void printJumpInsn (final int opcode, final Label label) {
162 buf.append(" ")
163 .append(OPCODES[opcode]).
164 append(" ");
165 appendLabel(label);
166 buf.append("\n");
167
168 if (cv != null) {
169 cv.visitJumpInsn(opcode, label);
170 }
171 }
172
173 public void printLabel (final Label label) {
174 buf.append(" ");
175 appendLabel(label);
176 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 if (cst instanceof Type) {
189 buf.append(((Type)cst).getDescriptor() + ".class");
190 } else {
191 buf.append(cst);
192 }
193 buf.append("\n");
194
195 if (cv != null) {
196 cv.visitLdcInsn(cst);
197 }
198 }
199
200 public void printIincInsn (final int var, final int increment) {
201 buf.append(" IINC ")
202 .append(var)
203 .append(" ")
204 .append(increment)
205 .append("\n");
206
207 if (cv != null) {
208 cv.visitIincInsn(var, increment);
209 }
210 }
211
212 public void printTableSwitchInsn (
213 final int min,
214 final int max,
215 final Label dflt,
216 final Label labels[])
217 {
218 buf.append(" TABLESWITCH\n");
219 for (int i = 0; i < labels.length; ++i) {
220 buf.append(" ")
221 .append(min + i)
222 .append(": ");
223 appendLabel(labels[i]);
224 buf.append("\n");
225 }
226 buf.append(" default: ");
227 appendLabel(dflt);
228 buf.append("\n");
229
230 if (cv != null) {
231 cv.visitTableSwitchInsn(min, max, dflt, labels);
232 }
233 }
234
235 public void printLookupSwitchInsn (
236 final Label dflt,
237 final int keys[],
238 final Label labels[])
239 {
240 buf.append(" LOOKUPSWITCH\n");
241 for (int i = 0; i < labels.length; ++i) {
242 buf.append(" ")
243 .append(keys[i])
244 .append(": ");
245 appendLabel(labels[i]);
246 buf.append("\n");
247 }
248 buf.append(" default: ");
249 appendLabel(dflt);
250 buf.append("\n");
251
252 if (cv != null) {
253 cv.visitLookupSwitchInsn(dflt, keys, labels);
254 }
255 }
256
257 public void printMultiANewArrayInsn (final String desc, final int dims) {
258 buf.append(" MULTIANEWARRAY ")
259 .append(desc)
260 .append(" ")
261 .append(dims)
262 .append("\n");
263
264 if (cv != null) {
265 cv.visitMultiANewArrayInsn(desc, dims);
266 }
267 }
268
269 public void printTryCatchBlock (
270 final Label start,
271 final Label end,
272 final Label handler,
273 final String type)
274 {
275 buf.append(" TRYCATCHBLOCK ");
276 appendLabel(start);
277 buf.append(" ");
278 appendLabel(end);
279 buf.append(" ");
280 appendLabel(handler);
281 buf.append(" ")
282 .append(type)
283 .append("\n");
284
285 if (cv != null) {
286 cv.visitTryCatchBlock(start, end, handler, type);
287 }
288 }
289
290 public void printMaxs (final int maxStack, final int maxLocals) {
291 buf.append(" MAXSTACK = ")
292 .append(maxStack)
293 .append("\n MAXLOCALS = ")
294 .append(maxLocals)
295 .append("\n\n");
296
297 if (cv != null) {
298 cv.visitMaxs(maxStack, maxLocals);
299 }
300 }
301
302 public void printLocalVariable (
303 final String name,
304 final String desc,
305 final Label start,
306 final Label end,
307 final int index)
308 {
309 buf.append(" LOCALVARIABLE ")
310 .append(name)
311 .append(" ")
312 .append(desc)
313 .append(" ");
314 appendLabel(start);
315 buf.append(" ");
316 appendLabel(end);
317 buf.append(" ")
318 .append(index)
319 .append("\n");
320
321 if (cv != null) {
322 cv.visitLocalVariable(name, desc, start, end, index);
323 }
324 }
325
326 public void printLineNumber (final int line, final Label start) {
327 buf.append(" LINENUMBER ")
328 .append(line)
329 .append(" ");
330 appendLabel(start);
331 buf.append("\n");
332
333 if (cv != null) {
334 cv.visitLineNumber(line, start);
335 }
336 }
337
338 public void printAttribute (final Attribute attr) {
339 buf.append(" CODE ATTRIBUTE ").append(attr.type).append(" : ")
340 .append(attr.toString()).append("\n");
341
342 if (cv != null) {
343 cv.visitAttribute(attr);
344 }
345 }
346
347
353
354 private void appendLabel (final Label l) {
355 String name = (String )labelNames.get(l);
356 if (name == null) {
357 name = "L" + labelNames.size();
358 labelNames.put(l, name);
359 }
360 buf.append(name);
361 }
362 }
363 |
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