21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.classfile;
27
28 import java.util.Map;
29
30 import com.sun.tools.classfile.ConstantPool.CONSTANT_Class_info;
31 import com.sun.tools.classfile.ConstantPool.CONSTANT_Double_info;
32 import com.sun.tools.classfile.ConstantPool.CONSTANT_Fieldref_info;
33 import com.sun.tools.classfile.ConstantPool.CONSTANT_Float_info;
34 import com.sun.tools.classfile.ConstantPool.CONSTANT_Integer_info;
35 import com.sun.tools.classfile.ConstantPool.CONSTANT_InterfaceMethodref_info;
36 import com.sun.tools.classfile.ConstantPool.CONSTANT_InvokeDynamic_info;
37 import com.sun.tools.classfile.ConstantPool.CONSTANT_Long_info;
38 import com.sun.tools.classfile.ConstantPool.CONSTANT_MethodHandle_info;
39 import com.sun.tools.classfile.ConstantPool.CONSTANT_MethodType_info;
40 import com.sun.tools.classfile.ConstantPool.CONSTANT_Methodref_info;
41 import com.sun.tools.classfile.ConstantPool.CONSTANT_NameAndType_info;
42 import com.sun.tools.classfile.ConstantPool.CONSTANT_String_info;
43 import com.sun.tools.classfile.ConstantPool.CONSTANT_Utf8_info;
44 import com.sun.tools.classfile.ConstantPool.CPInfo;
45
46 /**
47 * Rewrites a class file using a map of translations.
48 *
49 * <p><b>This is NOT part of any supported API.
50 * If you write code that depends on this, you do so at your own risk.
51 * This code and its internal interfaces are subject to change or
52 * deletion without notice.</b>
53 */
54 public class ClassTranslator
55 implements ConstantPool.Visitor<ConstantPool.CPInfo,Map<Object,Object>> {
56 /**
57 * Create a new ClassFile from {@code cf}, such that for all entries
58 * {@code k -\> v} in {@code translations},
59 * each occurrence of {@code k} in {@code cf} will be replaced by {@code v}.
60 * in
61 * @param cf the class file to be processed
225 if (attribute2 == null) {
226 attribute2 = attribute; // don't support translation within attributes yet
227 // (what about Code attribute)
228 translations.put(attribute, attribute2);
229 }
230 return attribute2;
231 }
232
233 private static <T> boolean equal(T[] a1, T[] a2) {
234 if (a1 == null || a2 == null)
235 return (a1 == a2);
236 if (a1.length != a2.length)
237 return false;
238 for (int i = 0; i < a1.length; i++) {
239 if (a1[i] != a2[i])
240 return false;
241 }
242 return true;
243 }
244
245 public CPInfo visitClass(CONSTANT_Class_info info, Map<Object, Object> translations) {
246 CONSTANT_Class_info info2 = (CONSTANT_Class_info) translations.get(info);
247 if (info2 == null) {
248 ConstantPool cp2 = translate(info.cp, translations);
249 if (cp2 == info.cp)
250 info2 = info;
251 else
252 info2 = new CONSTANT_Class_info(cp2, info.name_index);
253 translations.put(info, info2);
254 }
255 return info;
256 }
257
258 public CPInfo visitDouble(CONSTANT_Double_info info, Map<Object, Object> translations) {
259 CONSTANT_Double_info info2 = (CONSTANT_Double_info) translations.get(info);
260 if (info2 == null) {
261 info2 = info;
262 translations.put(info, info2);
263 }
264 return info;
265 }
266
267 public CPInfo visitFieldref(CONSTANT_Fieldref_info info, Map<Object, Object> translations) {
268 CONSTANT_Fieldref_info info2 = (CONSTANT_Fieldref_info) translations.get(info);
269 if (info2 == null) {
270 ConstantPool cp2 = translate(info.cp, translations);
271 if (cp2 == info.cp)
272 info2 = info;
273 else
274 info2 = new CONSTANT_Fieldref_info(cp2, info.class_index, info.name_and_type_index);
275 translations.put(info, info2);
276 }
277 return info;
278 }
279
280 public CPInfo visitFloat(CONSTANT_Float_info info, Map<Object, Object> translations) {
281 CONSTANT_Float_info info2 = (CONSTANT_Float_info) translations.get(info);
282 if (info2 == null) {
283 info2 = info;
284 translations.put(info, info2);
285 }
286 return info;
287 }
288
289 public CPInfo visitInteger(CONSTANT_Integer_info info, Map<Object, Object> translations) {
290 CONSTANT_Integer_info info2 = (CONSTANT_Integer_info) translations.get(info);
291 if (info2 == null) {
292 info2 = info;
293 translations.put(info, info2);
294 }
295 return info;
296 }
297
298 public CPInfo visitInterfaceMethodref(CONSTANT_InterfaceMethodref_info info, Map<Object, Object> translations) {
299 CONSTANT_InterfaceMethodref_info info2 = (CONSTANT_InterfaceMethodref_info) translations.get(info);
300 if (info2 == null) {
301 ConstantPool cp2 = translate(info.cp, translations);
302 if (cp2 == info.cp)
303 info2 = info;
304 else
305 info2 = new CONSTANT_InterfaceMethodref_info(cp2, info.class_index, info.name_and_type_index);
306 translations.put(info, info2);
307 }
308 return info;
309 }
310
311 public CPInfo visitInvokeDynamic(CONSTANT_InvokeDynamic_info info, Map<Object, Object> translations) {
312 CONSTANT_InvokeDynamic_info info2 = (CONSTANT_InvokeDynamic_info) translations.get(info);
313 if (info2 == null) {
314 ConstantPool cp2 = translate(info.cp, translations);
315 if (cp2 == info.cp) {
316 info2 = info;
317 } else {
318 info2 = new CONSTANT_InvokeDynamic_info(cp2, info.bootstrap_method_attr_index, info.name_and_type_index);
319 }
320 translations.put(info, info2);
321 }
322 return info;
323 }
324
325 public CPInfo visitLong(CONSTANT_Long_info info, Map<Object, Object> translations) {
326 CONSTANT_Long_info info2 = (CONSTANT_Long_info) translations.get(info);
327 if (info2 == null) {
328 info2 = info;
329 translations.put(info, info2);
330 }
331 return info;
332 }
333
334 public CPInfo visitNameAndType(CONSTANT_NameAndType_info info, Map<Object, Object> translations) {
335 CONSTANT_NameAndType_info info2 = (CONSTANT_NameAndType_info) translations.get(info);
336 if (info2 == null) {
337 ConstantPool cp2 = translate(info.cp, translations);
338 if (cp2 == info.cp)
339 info2 = info;
340 else
341 info2 = new CONSTANT_NameAndType_info(cp2, info.name_index, info.type_index);
342 translations.put(info, info2);
343 }
344 return info;
345 }
346
347 public CPInfo visitMethodref(CONSTANT_Methodref_info info, Map<Object, Object> translations) {
348 CONSTANT_Methodref_info info2 = (CONSTANT_Methodref_info) translations.get(info);
349 if (info2 == null) {
350 ConstantPool cp2 = translate(info.cp, translations);
351 if (cp2 == info.cp)
352 info2 = info;
353 else
354 info2 = new CONSTANT_Methodref_info(cp2, info.class_index, info.name_and_type_index);
355 translations.put(info, info2);
356 }
357 return info;
358 }
359
360 public CPInfo visitMethodHandle(CONSTANT_MethodHandle_info info, Map<Object, Object> translations) {
361 CONSTANT_MethodHandle_info info2 = (CONSTANT_MethodHandle_info) translations.get(info);
362 if (info2 == null) {
363 ConstantPool cp2 = translate(info.cp, translations);
364 if (cp2 == info.cp) {
365 info2 = info;
366 } else {
367 info2 = new CONSTANT_MethodHandle_info(cp2, info.reference_kind, info.reference_index);
368 }
369 translations.put(info, info2);
370 }
371 return info;
372 }
373
374 public CPInfo visitMethodType(CONSTANT_MethodType_info info, Map<Object, Object> translations) {
375 CONSTANT_MethodType_info info2 = (CONSTANT_MethodType_info) translations.get(info);
376 if (info2 == null) {
377 ConstantPool cp2 = translate(info.cp, translations);
378 if (cp2 == info.cp) {
379 info2 = info;
380 } else {
381 info2 = new CONSTANT_MethodType_info(cp2, info.descriptor_index);
382 }
383 translations.put(info, info2);
384 }
385 return info;
386 }
387
388 public CPInfo visitString(CONSTANT_String_info info, Map<Object, Object> translations) {
389 CONSTANT_String_info info2 = (CONSTANT_String_info) translations.get(info);
390 if (info2 == null) {
391 ConstantPool cp2 = translate(info.cp, translations);
392 if (cp2 == info.cp)
393 info2 = info;
394 else
395 info2 = new CONSTANT_String_info(cp2, info.string_index);
396 translations.put(info, info2);
397 }
398 return info;
399 }
400
401 public CPInfo visitUtf8(CONSTANT_Utf8_info info, Map<Object, Object> translations) {
402 CONSTANT_Utf8_info info2 = (CONSTANT_Utf8_info) translations.get(info);
403 if (info2 == null) {
404 info2 = info;
405 translations.put(info, info2);
406 }
407 return info;
408 }
409
410 }
|
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.classfile;
27
28 import java.util.Map;
29
30 import com.sun.tools.classfile.ConstantPool.CONSTANT_Class_info;
31 import com.sun.tools.classfile.ConstantPool.CONSTANT_Double_info;
32 import com.sun.tools.classfile.ConstantPool.CONSTANT_Fieldref_info;
33 import com.sun.tools.classfile.ConstantPool.CONSTANT_Float_info;
34 import com.sun.tools.classfile.ConstantPool.CONSTANT_Integer_info;
35 import com.sun.tools.classfile.ConstantPool.CONSTANT_InterfaceMethodref_info;
36 import com.sun.tools.classfile.ConstantPool.CONSTANT_InvokeDynamic_info;
37 import com.sun.tools.classfile.ConstantPool.CONSTANT_Long_info;
38 import com.sun.tools.classfile.ConstantPool.CONSTANT_MethodHandle_info;
39 import com.sun.tools.classfile.ConstantPool.CONSTANT_MethodType_info;
40 import com.sun.tools.classfile.ConstantPool.CONSTANT_Methodref_info;
41 import com.sun.tools.classfile.ConstantPool.CONSTANT_Module_info;
42 import com.sun.tools.classfile.ConstantPool.CONSTANT_NameAndType_info;
43 import com.sun.tools.classfile.ConstantPool.CONSTANT_Package_info;
44 import com.sun.tools.classfile.ConstantPool.CONSTANT_String_info;
45 import com.sun.tools.classfile.ConstantPool.CONSTANT_Utf8_info;
46 import com.sun.tools.classfile.ConstantPool.CPInfo;
47
48 /**
49 * Rewrites a class file using a map of translations.
50 *
51 * <p><b>This is NOT part of any supported API.
52 * If you write code that depends on this, you do so at your own risk.
53 * This code and its internal interfaces are subject to change or
54 * deletion without notice.</b>
55 */
56 public class ClassTranslator
57 implements ConstantPool.Visitor<ConstantPool.CPInfo,Map<Object,Object>> {
58 /**
59 * Create a new ClassFile from {@code cf}, such that for all entries
60 * {@code k -\> v} in {@code translations},
61 * each occurrence of {@code k} in {@code cf} will be replaced by {@code v}.
62 * in
63 * @param cf the class file to be processed
227 if (attribute2 == null) {
228 attribute2 = attribute; // don't support translation within attributes yet
229 // (what about Code attribute)
230 translations.put(attribute, attribute2);
231 }
232 return attribute2;
233 }
234
235 private static <T> boolean equal(T[] a1, T[] a2) {
236 if (a1 == null || a2 == null)
237 return (a1 == a2);
238 if (a1.length != a2.length)
239 return false;
240 for (int i = 0; i < a1.length; i++) {
241 if (a1[i] != a2[i])
242 return false;
243 }
244 return true;
245 }
246
247 @Override
248 public CPInfo visitClass(CONSTANT_Class_info info, Map<Object, Object> translations) {
249 CONSTANT_Class_info info2 = (CONSTANT_Class_info) translations.get(info);
250 if (info2 == null) {
251 ConstantPool cp2 = translate(info.cp, translations);
252 if (cp2 == info.cp)
253 info2 = info;
254 else
255 info2 = new CONSTANT_Class_info(cp2, info.name_index);
256 translations.put(info, info2);
257 }
258 return info;
259 }
260
261 @Override
262 public CPInfo visitDouble(CONSTANT_Double_info info, Map<Object, Object> translations) {
263 CONSTANT_Double_info info2 = (CONSTANT_Double_info) translations.get(info);
264 if (info2 == null) {
265 info2 = info;
266 translations.put(info, info2);
267 }
268 return info;
269 }
270
271 @Override
272 public CPInfo visitFieldref(CONSTANT_Fieldref_info info, Map<Object, Object> translations) {
273 CONSTANT_Fieldref_info info2 = (CONSTANT_Fieldref_info) translations.get(info);
274 if (info2 == null) {
275 ConstantPool cp2 = translate(info.cp, translations);
276 if (cp2 == info.cp)
277 info2 = info;
278 else
279 info2 = new CONSTANT_Fieldref_info(cp2, info.class_index, info.name_and_type_index);
280 translations.put(info, info2);
281 }
282 return info;
283 }
284
285 @Override
286 public CPInfo visitFloat(CONSTANT_Float_info info, Map<Object, Object> translations) {
287 CONSTANT_Float_info info2 = (CONSTANT_Float_info) translations.get(info);
288 if (info2 == null) {
289 info2 = info;
290 translations.put(info, info2);
291 }
292 return info;
293 }
294
295 @Override
296 public CPInfo visitInteger(CONSTANT_Integer_info info, Map<Object, Object> translations) {
297 CONSTANT_Integer_info info2 = (CONSTANT_Integer_info) translations.get(info);
298 if (info2 == null) {
299 info2 = info;
300 translations.put(info, info2);
301 }
302 return info;
303 }
304
305 @Override
306 public CPInfo visitInterfaceMethodref(CONSTANT_InterfaceMethodref_info info, Map<Object, Object> translations) {
307 CONSTANT_InterfaceMethodref_info info2 = (CONSTANT_InterfaceMethodref_info) translations.get(info);
308 if (info2 == null) {
309 ConstantPool cp2 = translate(info.cp, translations);
310 if (cp2 == info.cp)
311 info2 = info;
312 else
313 info2 = new CONSTANT_InterfaceMethodref_info(cp2, info.class_index, info.name_and_type_index);
314 translations.put(info, info2);
315 }
316 return info;
317 }
318
319 @Override
320 public CPInfo visitInvokeDynamic(CONSTANT_InvokeDynamic_info info, Map<Object, Object> translations) {
321 CONSTANT_InvokeDynamic_info info2 = (CONSTANT_InvokeDynamic_info) translations.get(info);
322 if (info2 == null) {
323 ConstantPool cp2 = translate(info.cp, translations);
324 if (cp2 == info.cp) {
325 info2 = info;
326 } else {
327 info2 = new CONSTANT_InvokeDynamic_info(cp2, info.bootstrap_method_attr_index, info.name_and_type_index);
328 }
329 translations.put(info, info2);
330 }
331 return info;
332 }
333
334 @Override
335 public CPInfo visitLong(CONSTANT_Long_info info, Map<Object, Object> translations) {
336 CONSTANT_Long_info info2 = (CONSTANT_Long_info) translations.get(info);
337 if (info2 == null) {
338 info2 = info;
339 translations.put(info, info2);
340 }
341 return info;
342 }
343
344 @Override
345 public CPInfo visitMethodref(CONSTANT_Methodref_info info, Map<Object, Object> translations) {
346 CONSTANT_Methodref_info info2 = (CONSTANT_Methodref_info) translations.get(info);
347 if (info2 == null) {
348 ConstantPool cp2 = translate(info.cp, translations);
349 if (cp2 == info.cp)
350 info2 = info;
351 else
352 info2 = new CONSTANT_Methodref_info(cp2, info.class_index, info.name_and_type_index);
353 translations.put(info, info2);
354 }
355 return info;
356 }
357
358 @Override
359 public CPInfo visitMethodHandle(CONSTANT_MethodHandle_info info, Map<Object, Object> translations) {
360 CONSTANT_MethodHandle_info info2 = (CONSTANT_MethodHandle_info) translations.get(info);
361 if (info2 == null) {
362 ConstantPool cp2 = translate(info.cp, translations);
363 if (cp2 == info.cp) {
364 info2 = info;
365 } else {
366 info2 = new CONSTANT_MethodHandle_info(cp2, info.reference_kind, info.reference_index);
367 }
368 translations.put(info, info2);
369 }
370 return info;
371 }
372
373 @Override
374 public CPInfo visitMethodType(CONSTANT_MethodType_info info, Map<Object, Object> translations) {
375 CONSTANT_MethodType_info info2 = (CONSTANT_MethodType_info) translations.get(info);
376 if (info2 == null) {
377 ConstantPool cp2 = translate(info.cp, translations);
378 if (cp2 == info.cp) {
379 info2 = info;
380 } else {
381 info2 = new CONSTANT_MethodType_info(cp2, info.descriptor_index);
382 }
383 translations.put(info, info2);
384 }
385 return info;
386 }
387
388 @Override
389 public CPInfo visitModule(CONSTANT_Module_info info, Map<Object, Object> translations) {
390 CONSTANT_Module_info info2 = (CONSTANT_Module_info) translations.get(info);
391 if (info2 == null) {
392 ConstantPool cp2 = translate(info.cp, translations);
393 if (cp2 == info.cp)
394 info2 = info;
395 else
396 info2 = new CONSTANT_Module_info(cp2, info.name_index);
397 translations.put(info, info2);
398 }
399 return info;
400 }
401
402 @Override
403 public CPInfo visitNameAndType(CONSTANT_NameAndType_info info, Map<Object, Object> translations) {
404 CONSTANT_NameAndType_info info2 = (CONSTANT_NameAndType_info) translations.get(info);
405 if (info2 == null) {
406 ConstantPool cp2 = translate(info.cp, translations);
407 if (cp2 == info.cp)
408 info2 = info;
409 else
410 info2 = new CONSTANT_NameAndType_info(cp2, info.name_index, info.type_index);
411 translations.put(info, info2);
412 }
413 return info;
414 }
415
416 @Override
417 public CPInfo visitPackage(CONSTANT_Package_info info, Map<Object, Object> translations) {
418 CONSTANT_Package_info info2 = (CONSTANT_Package_info) translations.get(info);
419 if (info2 == null) {
420 ConstantPool cp2 = translate(info.cp, translations);
421 if (cp2 == info.cp)
422 info2 = info;
423 else
424 info2 = new CONSTANT_Package_info(cp2, info.name_index);
425 translations.put(info, info2);
426 }
427 return info;
428 }
429
430 @Override
431 public CPInfo visitString(CONSTANT_String_info info, Map<Object, Object> translations) {
432 CONSTANT_String_info info2 = (CONSTANT_String_info) translations.get(info);
433 if (info2 == null) {
434 ConstantPool cp2 = translate(info.cp, translations);
435 if (cp2 == info.cp)
436 info2 = info;
437 else
438 info2 = new CONSTANT_String_info(cp2, info.string_index);
439 translations.put(info, info2);
440 }
441 return info;
442 }
443
444 @Override
445 public CPInfo visitUtf8(CONSTANT_Utf8_info info, Map<Object, Object> translations) {
446 CONSTANT_Utf8_info info2 = (CONSTANT_Utf8_info) translations.get(info);
447 if (info2 == null) {
448 info2 = info;
449 translations.put(info, info2);
450 }
451 return info;
452 }
453
454 }
|