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1
16 package com.google.gwt.dev.jjs.ast;
17
18 import com.google.gwt.dev.jjs.InternalCompilerException;
19 import com.google.gwt.dev.jjs.ast.js.JClassSeed;
20 import com.google.gwt.dev.jjs.ast.js.JMultiExpression;
21 import com.google.gwt.dev.jjs.ast.js.JsniFieldRef;
22 import com.google.gwt.dev.jjs.ast.js.JsniMethod;
23 import com.google.gwt.dev.jjs.ast.js.JsniMethodRef;
24 import com.google.gwt.dev.jjs.ast.js.JsonArray;
25 import com.google.gwt.dev.jjs.ast.js.JsonObject;
26 import com.google.gwt.dev.jjs.ast.js.JsonObject.JsonPropInit;
27
28 import java.util.Iterator  ;
29 import java.util.List ;
30
31
34 public class JVisitor {
35
36 protected static final Context UNMODIFIABLE_CONTEXT = new Context() {
37
38 public boolean canInsert() {
39 return false;
40 }
41
42 public boolean canRemove() {
43 return false;
44 }
45
46 public void insertAfter(JNode node) {
47 throw new UnsupportedOperationException ();
48 }
49
50 public void insertBefore(JNode node) {
51 throw new UnsupportedOperationException ();
52 }
53
54 public void removeMe() {
55 throw new UnsupportedOperationException ();
56 }
57
58 public void replaceMe(JNode node) {
59 throw new UnsupportedOperationException ();
60 }
61
62 };
63
64 public final JExpression accept(JExpression node) {
65 return (JExpression) doAccept(node);
66 }
67
68 public final JNode accept(JNode node) {
69 return doAccept(node);
70 }
71
72 public final JStatement accept(JStatement node) {
73 return (JStatement) doAccept(node);
74 }
75
76 public final void accept(List list) {
77 doAccept(list);
78 }
79
80 public final void acceptWithInsertRemove(List list) {
81 doAcceptWithInsertRemove(list);
82 }
83
84 public boolean didChange() {
85 throw new UnsupportedOperationException ();
86 }
87
88 public void endVisit(JAbsentArrayDimension x, Context ctx) {
89 }
90
91 public void endVisit(JArrayRef x, Context ctx) {
92 }
93
94 public void endVisit(JArrayType x, Context ctx) {
95 }
96
97 public void endVisit(JAssertStatement x, Context ctx) {
98 }
99
100 public void endVisit(JBinaryOperation x, Context ctx) {
101 }
102
103 public void endVisit(JBlock x, Context ctx) {
104 }
105
106 public void endVisit(JBooleanLiteral x, Context ctx) {
107 }
108
109 public void endVisit(JBreakStatement x, Context ctx) {
110 }
111
112 public void endVisit(JCaseStatement x, Context ctx) {
113 }
114
115 public void endVisit(JCastOperation x, Context ctx) {
116 }
117
118 public void endVisit(JCharLiteral x, Context ctx) {
119 }
120
121 public void endVisit(JClassLiteral x, Context ctx) {
122 }
123
124 public void endVisit(JClassSeed x, Context ctx) {
125 }
126
127 public void endVisit(JClassType x, Context ctx) {
128 }
129
130 public void endVisit(JConditional x, Context ctx) {
131 }
132
133 public void endVisit(JContinueStatement x, Context ctx) {
134 }
135
136 public void endVisit(JDoStatement x, Context ctx) {
137 }
138
139 public void endVisit(JDoubleLiteral x, Context ctx) {
140 }
141
142 public void endVisit(JExpressionStatement x, Context ctx) {
143 }
144
145 public void endVisit(JField x, Context ctx) {
146 }
147
148 public void endVisit(JFieldRef x, Context ctx) {
149 }
150
151 public void endVisit(JFloatLiteral x, Context ctx) {
152 }
153
154 public void endVisit(JForStatement x, Context ctx) {
155 }
156
157 public void endVisit(JIfStatement x, Context ctx) {
158 }
159
160 public void endVisit(JInstanceOf x, Context ctx) {
161 }
162
163 public void endVisit(JInterfaceType x, Context ctx) {
164 }
165
166 public void endVisit(JIntLiteral x, Context ctx) {
167 }
168
169 public void endVisit(JLabel x, Context ctx) {
170 }
171
172 public void endVisit(JLabeledStatement x, Context ctx) {
173 }
174
175 public void endVisit(JLocal x, Context ctx) {
176 }
177
178 public void endVisit(JLocalDeclarationStatement x, Context ctx) {
179 }
180
181 public void endVisit(JLocalRef x, Context ctx) {
182 }
183
184 public void endVisit(JLongLiteral x, Context ctx) {
185 }
186
187 public void endVisit(JMethod x, Context ctx) {
188 }
189
190 public void endVisit(JMethodCall x, Context ctx) {
191 }
192
193 public void endVisit(JMultiExpression x, Context ctx) {
194 }
195
196 public void endVisit(JNewArray x, Context ctx) {
197 }
198
199 public void endVisit(JNewInstance x, Context ctx) {
200 }
201
202 public void endVisit(JNullLiteral x, Context ctx) {
203 }
204
205 public void endVisit(JNullType x, Context ctx) {
206 }
207
208 public void endVisit(JParameter x, Context ctx) {
209 }
210
211 public void endVisit(JParameterRef x, Context ctx) {
212 }
213
214 public void endVisit(JPostfixOperation x, Context ctx) {
215 }
216
217 public void endVisit(JPrefixOperation x, Context ctx) {
218 }
219
220 public void endVisit(JPrimitiveType x, Context ctx) {
221 }
222
223 public void endVisit(JProgram x, Context ctx) {
224 }
225
226 public void endVisit(JReturnStatement x, Context ctx) {
227 }
228
229 public void endVisit(JsniFieldRef x, Context ctx) {
230 }
231
232 public void endVisit(JsniMethod x, Context ctx) {
233 }
234
235 public void endVisit(JsniMethodRef x, Context ctx) {
236 }
237
238 public void endVisit(JsonArray x, Context ctx) {
239 }
240
241 public void endVisit(JsonObject x, Context ctx) {
242 }
243
244 public void endVisit(JsonPropInit x, Context ctx) {
245 }
246
247 public void endVisit(JStringLiteral x, Context ctx) {
248 }
249
250 public void endVisit(JSwitchStatement x, Context ctx) {
251 }
252
253 public void endVisit(JThisRef x, Context ctx) {
254 }
255
256 public void endVisit(JThrowStatement x, Context ctx) {
257 }
258
259 public void endVisit(JTryStatement x, Context ctx) {
260 }
261
262 public void endVisit(JWhileStatement x, Context ctx) {
263 }
264
265 public boolean visit(JAbsentArrayDimension x, Context ctx) {
266 return true;
267 }
268
269 public boolean visit(JArrayRef x, Context ctx) {
270 return true;
271 }
272
273 public boolean visit(JArrayType x, Context ctx) {
274 return true;
275 }
276
277 public boolean visit(JAssertStatement x, Context ctx) {
278 return true;
279 }
280
281 public boolean visit(JBinaryOperation x, Context ctx) {
282 return true;
283 }
284
285 public boolean visit(JBlock x, Context ctx) {
286 return true;
287 }
288
289 public boolean visit(JBooleanLiteral x, Context ctx) {
290 return true;
291 }
292
293 public boolean visit(JBreakStatement x, Context ctx) {
294 return true;
295 }
296
297 public boolean visit(JCaseStatement x, Context ctx) {
298 return true;
299 }
300
301 public boolean visit(JCastOperation x, Context ctx) {
302 return true;
303 }
304
305 public boolean visit(JCharLiteral x, Context ctx) {
306 return true;
307 }
308
309 public boolean visit(JClassLiteral x, Context ctx) {
310 return true;
311 }
312
313 public boolean visit(JClassSeed x, Context ctx) {
314 return true;
315 }
316
317 public boolean visit(JClassType x, Context ctx) {
318 return true;
319 }
320
321 public boolean visit(JConditional x, Context ctx) {
322 return true;
323 }
324
325 public boolean visit(JContinueStatement x, Context ctx) {
326 return true;
327 }
328
329 public boolean visit(JDoStatement x, Context ctx) {
330 return true;
331 }
332
333 public boolean visit(JDoubleLiteral x, Context ctx) {
334 return true;
335 }
336
337 public boolean visit(JExpressionStatement x, Context ctx) {
338 return true;
339 }
340
341 public boolean visit(JField x, Context ctx) {
342 return true;
343 }
344
345 public boolean visit(JFieldRef x, Context ctx) {
346 return true;
347 }
348
349 public boolean visit(JFloatLiteral x, Context ctx) {
350 return true;
351 }
352
353 public boolean visit(JForStatement x, Context ctx) {
354 return true;
355 }
356
357 public boolean visit(JIfStatement x, Context ctx) {
358 return true;
359 }
360
361 public boolean visit(JInstanceOf x, Context ctx) {
362 return true;
363 }
364
365 public boolean visit(JInterfaceType x, Context ctx) {
366 return true;
367 }
368
369 public boolean visit(JIntLiteral x, Context ctx) {
370 return true;
371 }
372
373 public boolean visit(JLabel x, Context ctx) {
374 return true;
375 }
376
377 public boolean visit(JLabeledStatement x, Context ctx) {
378 return true;
379 }
380
381 public boolean visit(JLocal x, Context ctx) {
382 return true;
383 }
384
385 public boolean visit(JLocalDeclarationStatement x, Context ctx) {
386 return true;
387 }
388
389 public boolean visit(JLocalRef x, Context ctx) {
390 return true;
391 }
392
393 public boolean visit(JLongLiteral x, Context ctx) {
394 return true;
395 }
396
397 public boolean visit(JMethod x, Context ctx) {
398 return true;
399 }
400
401 public boolean visit(JMethodCall x, Context ctx) {
402 return true;
403 }
404
405 public boolean visit(JMultiExpression x, Context ctx) {
406 return true;
407 }
408
409 public boolean visit(JNewArray x, Context ctx) {
410 return true;
411 }
412
413 public boolean visit(JNewInstance x, Context ctx) {
414 return true;
415 }
416
417 public boolean visit(JNullLiteral x, Context ctx) {
418 return true;
419 }
420
421 public boolean visit(JNullType x, Context ctx) {
422 return true;
423 }
424
425 public boolean visit(JParameter x, Context ctx) {
426 return true;
427 }
428
429 public boolean visit(JParameterRef x, Context ctx) {
430 return true;
431 }
432
433 public boolean visit(JPostfixOperation x, Context ctx) {
434 return true;
435 }
436
437 public boolean visit(JPrefixOperation x, Context ctx) {
438 return true;
439 }
440
441 public boolean visit(JPrimitiveType x, Context ctx) {
442 return true;
443 }
444
445 public boolean visit(JProgram x, Context ctx) {
446 return true;
447 }
448
449 public boolean visit(JReturnStatement x, Context ctx) {
450 return true;
451 }
452
453 public boolean visit(JsniFieldRef x, Context ctx) {
454 return true;
455 }
456
457 public boolean visit(JsniMethod x, Context ctx) {
458 return true;
459 }
460
461 public boolean visit(JsniMethodRef x, Context ctx) {
462 return true;
463 }
464
465 public boolean visit(JsonArray x, Context ctx) {
466 return true;
467 }
468
469 public boolean visit(JsonObject x, Context ctx) {
470 return true;
471 }
472
473 public boolean visit(JsonPropInit x, Context ctx) {
474 return true;
475 }
476
477 public boolean visit(JStringLiteral x, Context ctx) {
478 return true;
479 }
480
481 public boolean visit(JSwitchStatement x, Context ctx) {
482 return true;
483 }
484
485 public boolean visit(JThisRef x, Context ctx) {
486 return true;
487 }
488
489 public boolean visit(JThrowStatement x, Context ctx) {
490 return true;
491 }
492
493 public boolean visit(JTryStatement x, Context ctx) {
494 return true;
495 }
496
497 public boolean visit(JWhileStatement x, Context ctx) {
498 return true;
499 }
500
501 protected JNode doAccept(JNode node) {
502 doTraverse(node, UNMODIFIABLE_CONTEXT);
503 return node;
504 }
505
506 protected void doAccept(List list) {
507 for (Iterator it = list.iterator(); it.hasNext();) {
508 doTraverse((JNode) it.next(), UNMODIFIABLE_CONTEXT);
509 }
510 }
511
512 protected void doAcceptWithInsertRemove(List list) {
513 for (Iterator it = list.iterator(); it.hasNext();) {
514 doTraverse((JNode) it.next(), UNMODIFIABLE_CONTEXT);
515 }
516 }
517
518 protected final void doTraverse(JNode node, Context ctx) {
519 try {
520 node.traverse(this, ctx);
521 } catch (Throwable e) {
522 throw translateException(node, e);
523 }
524 }
525
526 private InternalCompilerException translateException(JNode node, Throwable e) {
527 InternalCompilerException ice;
528 if (e instanceof InternalCompilerException) {
529 ice = (InternalCompilerException) e;
530 } else {
531 ice = new InternalCompilerException("Unexpected error during visit.", e);
532 }
533 ice.addNode(node);
534 return ice;
535 }
536 }
537 |
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