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Commit | Line | Data |
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616915dd | 1 | |
2 | /* | |
3 | ** constraintGeneration.c | |
4 | */ | |
5 | ||
6 | //#define DEBUGPRINT 1 | |
7 | ||
8 | # include <ctype.h> /* for isdigit */ | |
9 | # include "lclintMacros.nf" | |
10 | # include "basic.h" | |
11 | # include "cgrammar.h" | |
12 | # include "cgrammar_tokens.h" | |
13 | ||
14 | # include "exprChecks.h" | |
15 | # include "aliasChecks.h" | |
16 | # include "exprNodeSList.h" | |
17 | ||
18 | # include "exprData.i" | |
19 | # include "exprDataQuite.i" | |
20 | ||
21 | bool /*@alt void@*/ exprNode_generateConstraints (/*@temp@*/ exprNode e); | |
22 | static bool exprNode_handleError( exprNode p_e); | |
23 | ||
24 | //static cstring exprNode_findConstraints ( exprNode p_e); | |
25 | static bool exprNode_isMultiStatement(exprNode p_e); | |
26 | static bool exprNode_multiStatement (exprNode p_e); | |
27 | bool exprNode_exprTraverse (exprNode e, bool definatelv, bool definaterv, fileloc sequencePoint); | |
28 | //static void exprNode_constraintPropagateUp (exprNode p_e); | |
29 | constraintList exprNode_traversRequiresConstraints (exprNode e); | |
30 | constraintList exprNode_traversEnsuresConstraints (exprNode e); | |
31 | ||
32 | constraintList exprNode_traversTrueEnsuresConstraints (exprNode e); | |
9280addf | 33 | constraintList exprNode_traversFalseEnsuresConstraints (exprNode e); |
616915dd | 34 | |
35 | extern constraintList reflectChanges (constraintList pre2, constraintList post1); | |
36 | ||
37 | void mergeResolve (exprNode parent, exprNode child1, exprNode child2); | |
38 | exprNode makeDataTypeConstraints (exprNode e); | |
39 | constraintList constraintList_makeFixedArrayConstraints (sRefSet s); | |
40 | constraintList checkCall (exprNode fcn, exprNodeList arglist); | |
41 | ||
9280addf | 42 | void checkArgumentList (exprNode temp, exprNodeList arglist, fileloc sequencePoint); |
43 | ||
616915dd | 44 | //bool exprNode_testd() |
45 | //{ | |
46 | /* if ( ( (exprNode_isError ) ) ) | |
47 | { | |
48 | } | |
49 | if ( ( (e_1 ) ) ) | |
50 | { | |
51 | } | |
52 | */ | |
53 | //} | |
54 | ||
55 | bool exprNode_isUnhandled (exprNode e) | |
56 | { | |
57 | llassert( exprNode_isDefined(e) ); | |
58 | switch (e->kind) | |
59 | { | |
60 | case XPR_INITBLOCK: | |
61 | case XPR_EMPTY: | |
62 | case XPR_LABEL: | |
63 | case XPR_CONST: | |
64 | case XPR_VAR: | |
65 | case XPR_BODY: | |
66 | case XPR_OFFSETOF: | |
67 | case XPR_ALIGNOFT: | |
68 | case XPR_ALIGNOF: | |
69 | case XPR_VAARG: | |
70 | case XPR_ITERCALL: | |
71 | case XPR_ITER: | |
72 | case XPR_CAST: | |
73 | case XPR_GOTO: | |
74 | case XPR_CONTINUE: | |
75 | case XPR_BREAK: | |
76 | case XPR_COMMA: | |
77 | case XPR_COND: | |
78 | case XPR_TOK: | |
79 | case XPR_FTDEFAULT: | |
80 | case XPR_DEFAULT: | |
81 | case XPR_SWITCH: | |
82 | case XPR_FTCASE: | |
83 | case XPR_CASE: | |
84 | // case XPR_INIT: | |
85 | case XPR_NODE: | |
86 | DPRINTF((message ("Warning current constraint generation does not handle expression %s", exprNode_unparse(e)) ) ); | |
87 | return TRUE; | |
88 | /*@notreached@*/ | |
89 | break; | |
90 | default: | |
91 | return FALSE; | |
92 | ||
93 | } | |
94 | /*not reached*/ | |
95 | return FALSE; | |
96 | } | |
97 | ||
98 | bool exprNode_handleError( exprNode e) | |
99 | { | |
100 | if (exprNode_isError (e) || exprNode_isUnhandled(e) ) | |
101 | { | |
102 | static /*@only@*/ cstring error = cstring_undefined; | |
103 | ||
104 | if (!cstring_isDefined (error)) | |
105 | { | |
106 | error = cstring_makeLiteral ("<error>"); | |
107 | } | |
108 | ||
109 | /*@-unqualifiedtrans*/ return TRUE; /*@=unqualifiedtrans*/ | |
110 | } | |
111 | return FALSE; | |
112 | } | |
113 | ||
114 | bool /*@alt void@*/ exprNode_generateConstraints (/*@temp@*/ exprNode e) | |
115 | { | |
116 | if (exprNode_isError (e) ) | |
117 | return FALSE; | |
118 | ||
9280addf | 119 | e->requiresConstraints = constraintList_new(); |
120 | e->ensuresConstraints = constraintList_new(); | |
121 | e->trueEnsuresConstraints = constraintList_new(); | |
122 | e->falseEnsuresConstraints = constraintList_new(); | |
123 | ||
616915dd | 124 | if (exprNode_isUnhandled (e) ) |
125 | { | |
126 | DPRINTF( (message("Warning ignoring %s", exprNode_unparse (e) ) ) ); | |
9280addf | 127 | return FALSE; |
616915dd | 128 | } |
129 | ||
130 | ||
131 | // e = makeDataTypeConstraints (e); | |
132 | ||
133 | DPRINTF((message ("exprNode_generateConstraints Analysising %s at %s", exprNode_unparse( e), | |
134 | fileloc_unparse(exprNode_getfileloc(e) ) ) ) ); | |
135 | ||
136 | if (exprNode_isMultiStatement ( e) ) | |
137 | { | |
138 | exprNode_multiStatement(e); | |
139 | } | |
140 | else | |
141 | { | |
9280addf | 142 | fileloc loc; |
143 | ||
144 | loc = exprNode_getNextSequencePoint(e); | |
145 | exprNode_exprTraverse(e, FALSE, FALSE, loc); | |
146 | ||
616915dd | 147 | // llassert(FALSE); |
148 | return FALSE; | |
149 | } | |
150 | ||
151 | { | |
152 | constraintList c; | |
153 | ||
154 | c = constraintList_makeFixedArrayConstraints (e->uses); | |
155 | e->requiresConstraints = reflectChanges (e->requiresConstraints, c); | |
156 | ||
157 | // e->ensuresConstraints = constraintList_mergeEnsures(c, e->ensuresConstraints); | |
158 | ||
159 | } | |
160 | ||
161 | /* printf ("%s", (message ("%s", constraintList_printDetailed (e->requiresConstraints) ) ) ); | |
162 | printf ("%s", (message ("%s", constraintList_printDetailed (e->ensuresConstraints) ) ) ); */ | |
163 | return FALSE; | |
164 | } | |
165 | ||
166 | ||
167 | /* handles multiple statements */ | |
168 | ||
169 | bool exprNode_isMultiStatement(exprNode e) | |
170 | { | |
171 | if (exprNode_handleError (e) != NULL) | |
172 | return FALSE; | |
173 | ||
174 | switch (e->kind) | |
175 | { | |
176 | case XPR_FOR: | |
177 | case XPR_FORPRED: | |
178 | case XPR_IF: | |
179 | case XPR_IFELSE: | |
180 | case XPR_WHILE: | |
181 | case XPR_WHILEPRED: | |
182 | case XPR_DOWHILE: | |
183 | case XPR_BLOCK: | |
184 | case XPR_STMT: | |
185 | case XPR_STMTLIST: | |
186 | return TRUE; | |
187 | default: | |
188 | return FALSE; | |
189 | } | |
190 | ||
191 | } | |
192 | ||
193 | bool exprNode_stmt (exprNode e) | |
194 | { | |
195 | exprNode snode; | |
196 | fileloc loc; | |
197 | bool notError; | |
9280addf | 198 | char * s; |
199 | ||
616915dd | 200 | if (exprNode_isError(e) ) |
201 | { | |
202 | return FALSE; | |
203 | } | |
204 | e->requiresConstraints = constraintList_new(); | |
205 | e->ensuresConstraints = constraintList_new(); | |
206 | // e = makeDataTypeConstraints(e); | |
207 | ||
208 | ||
209 | DPRINTF(( "STMT:") ); | |
9280addf | 210 | s = exprNode_unparse(e); |
211 | // DPRINTF ( ( message("STMT: %s ") ) ); | |
212 | ||
616915dd | 213 | if (e->kind == XPR_INIT) |
214 | { | |
215 | DPRINTF (("Init") ); | |
216 | DPRINTF ( (message ("%s ", exprNode_unparse (e)) ) ); | |
217 | loc = exprNode_getNextSequencePoint(e); /* reduces to an expression */ | |
218 | notError = exprNode_exprTraverse (e, FALSE, FALSE, loc); | |
219 | e->requiresConstraints = exprNode_traversRequiresConstraints(e); | |
220 | e->ensuresConstraints = exprNode_traversEnsuresConstraints(e); | |
221 | return notError; | |
222 | } | |
223 | ||
224 | if (e->kind != XPR_STMT) | |
225 | { | |
226 | ||
227 | DPRINTF (("Not Stmt") ); | |
228 | DPRINTF ( (message ("%s ", exprNode_unparse (e)) ) ); | |
229 | if (exprNode_isMultiStatement (e) ) | |
230 | { | |
231 | return exprNode_multiStatement (e ); | |
232 | } | |
233 | BPRINTF( (message ("Ignoring non-statement %s", exprNode_unparse(e) ) ) ); | |
234 | return TRUE; | |
235 | // llassert(FALSE); | |
236 | } | |
237 | ||
238 | DPRINTF (("Stmt") ); | |
239 | DPRINTF ( (message ("%s ", exprNode_unparse (e)) ) ); | |
240 | ||
241 | snode = exprData_getUopNode (e->edata); | |
242 | ||
243 | /* could be stmt involving multiple statements: | |
244 | i.e. if, while for ect. | |
245 | */ | |
246 | ||
247 | if (exprNode_isMultiStatement (snode)) | |
248 | { | |
249 | // llassert(FALSE); | |
250 | return exprNode_multiStatement (snode); | |
251 | } | |
252 | ||
253 | loc = exprNode_getNextSequencePoint(e); /* reduces to an expression */ | |
254 | notError = exprNode_exprTraverse (snode, FALSE, FALSE, loc); | |
255 | e->requiresConstraints = exprNode_traversRequiresConstraints(snode); | |
256 | // printf ("For: %s \n", exprNode_unparse (e) ); | |
257 | // printf ("%s\n", constraintList_print(e->requiresConstraints) ); | |
258 | e->ensuresConstraints = exprNode_traversEnsuresConstraints(snode); | |
259 | // printf ("Ensures that:\n %s\n", constraintList_print(e->ensuresConstraints) ); | |
260 | // llassert(notError); | |
261 | return notError; | |
262 | ||
263 | } | |
264 | ||
265 | ||
266 | bool exprNode_stmtList (exprNode e) | |
267 | { | |
268 | exprNode stmt1, stmt2; | |
269 | if (exprNode_isError (e) ) | |
270 | { | |
271 | return FALSE; | |
272 | } | |
273 | ||
274 | e->requiresConstraints = constraintList_new(); | |
275 | e->ensuresConstraints = constraintList_new(); | |
276 | // e = makeDataTypeConstraints(e); | |
277 | ||
278 | /*Handle case of stmtList with only one statement: | |
279 | The parse tree stores this as stmt instead of stmtList*/ | |
280 | if (e->kind != XPR_STMTLIST) | |
281 | { | |
282 | return exprNode_stmt(e); | |
283 | } | |
284 | llassert (e->kind == XPR_STMTLIST); | |
285 | DPRINTF(( "STMTLIST:") ); | |
286 | DPRINTF ((cstring_toCharsSafe (exprNode_unparse(e)) ) ); | |
287 | stmt1 = exprData_getPairA (e->edata); | |
288 | stmt2 = exprData_getPairB (e->edata); | |
289 | ||
290 | ||
291 | DPRINTF((" stmtlist ") ); | |
292 | DPRINTF ((message("XW%s | %s", exprNode_unparse(stmt1), exprNode_unparse(stmt2) ) ) ); | |
293 | ||
294 | exprNode_stmt (stmt1); | |
295 | DPRINTF(("\nstmt after stmtList call " )); | |
296 | ||
297 | exprNode_stmt (stmt2); | |
298 | mergeResolve (e, stmt1, stmt2 ); | |
299 | ||
300 | DPRINTF ( (message ("smtlist constraints are: pre: %s \n and \t post %s\n", | |
301 | constraintList_print(e->requiresConstraints), | |
302 | constraintList_print(e->ensuresConstraints) ) ) ); | |
303 | return TRUE; | |
304 | } | |
305 | ||
306 | ||
307 | exprNode doIf (exprNode e, exprNode test, exprNode body) | |
308 | { | |
309 | DPRINTF ((message ("doIf: %s ", exprNode_unparse(e) ) ) ); | |
310 | ||
311 | test->ensuresConstraints = exprNode_traversEnsuresConstraints (test); | |
312 | test->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(test); | |
313 | ||
314 | e->requiresConstraints = reflectChanges (body->requiresConstraints, test->trueEnsuresConstraints); | |
315 | e->requiresConstraints = reflectChanges (e->requiresConstraints, | |
316 | test->ensuresConstraints); | |
9280addf | 317 | e->requiresConstraints = constraintList_addList(e->requiresConstraints, test->requiresConstraints); |
616915dd | 318 | #warning bad |
319 | e->ensuresConstraints = constraintList_copy (test->ensuresConstraints); | |
9280addf | 320 | |
321 | DPRINTF ((message ("doIf: if requiers %s ", constraintList_print(e->requiresConstraints) ) ) ); | |
322 | ||
616915dd | 323 | return e; |
324 | } | |
325 | ||
9280addf | 326 | |
327 | exprNode doWhile (exprNode e, exprNode test, exprNode body) | |
328 | { | |
329 | DPRINTF ((message ("doWhile: %s ", exprNode_unparse(e) ) ) ); | |
330 | return doIf (e, test, body); | |
331 | } | |
332 | ||
616915dd | 333 | constraintList constraintList_makeFixedArrayConstraints (sRefSet s) |
334 | { | |
335 | constraintList ret; | |
336 | ret = constraintList_new(); | |
337 | ||
338 | sRefSet_elements (s, el) | |
339 | { | |
340 | // llassert (el); | |
341 | if (sRef_isFixedArray(el) ) | |
342 | { | |
343 | int s; | |
344 | constraint con; | |
345 | s = sRef_getArraySize(el); | |
346 | DPRINTF( (message("%s is a fixed array with size %d", | |
347 | sRef_unparse(el), s) ) ); | |
348 | con = constraint_makeSRefSetBufferSize (el, (s - 1)); | |
349 | //con = constraint_makeSRefWriteSafeInt (el, (s - 1)); | |
350 | ret = constraintList_add(ret, con); | |
351 | } | |
352 | else | |
353 | { | |
354 | DPRINTF( (message("%s is not a fixed array", | |
355 | sRef_unparse(el)) ) ); | |
356 | } | |
357 | } | |
358 | end_sRefSet_elements | |
359 | ||
360 | return ret; | |
361 | } | |
362 | ||
363 | exprNode makeDataTypeConstraints (exprNode e) | |
364 | { | |
365 | constraintList c; | |
366 | DPRINTF(("makeDataTypeConstraints")); | |
367 | ||
368 | c = constraintList_makeFixedArrayConstraints (e->uses); | |
369 | ||
370 | e->ensuresConstraints = constraintList_addList (e->ensuresConstraints, c); | |
371 | ||
372 | return e; | |
373 | } | |
374 | ||
375 | void doFor (exprNode e, exprNode forPred, exprNode forBody) | |
376 | { | |
377 | exprNode init, test, inc; | |
378 | //merge the constraints: modle as if statement | |
379 | /* init | |
380 | if (test) | |
381 | for body | |
382 | inc */ | |
383 | init = exprData_getTripleInit (forPred->edata); | |
384 | test = exprData_getTripleTest (forPred->edata); | |
385 | inc = exprData_getTripleInc (forPred->edata); | |
386 | ||
387 | if ( ( (exprNode_isError (test) /*|| (exprNode_isError(init) )*/ ) || (exprNode_isError (inc) ) ) ) | |
388 | { | |
389 | DPRINTF ((message ("strange for statement:%s, ignoring it", exprNode_unparse(e) ) ) ); | |
390 | return; | |
391 | } | |
392 | ||
393 | forLoopHeuristics(e, forPred, forBody); | |
394 | ||
395 | e->requiresConstraints = reflectChanges (forBody->requiresConstraints, test->ensuresConstraints); | |
396 | e->requiresConstraints = reflectChanges (e->requiresConstraints, test->trueEnsuresConstraints); | |
397 | e->requiresConstraints = reflectChanges (e->requiresConstraints, forPred->ensuresConstraints); | |
398 | ||
399 | if (!forBody->canBreak) | |
400 | { | |
401 | e->ensuresConstraints = constraintList_addList(e->ensuresConstraints, forPred->ensuresConstraints); | |
402 | e->ensuresConstraints = constraintList_addList(e->ensuresConstraints, test->falseEnsuresConstraints); | |
403 | } | |
404 | else | |
405 | { | |
406 | DPRINTF(("Can break") ); | |
407 | } | |
408 | ||
409 | } | |
410 | ||
9280addf | 411 | |
412 | ||
616915dd | 413 | bool exprNode_multiStatement (exprNode e) |
414 | { | |
415 | ||
416 | bool ret; | |
417 | exprData data; | |
418 | exprNode e1, e2; | |
419 | exprNode p, trueBranch, falseBranch; | |
420 | exprNode forPred, forBody; | |
421 | exprNode init, test, inc; | |
422 | constraintList cons; | |
423 | constraintList t, f; | |
424 | e->requiresConstraints = constraintList_new(); | |
425 | e->ensuresConstraints = constraintList_new(); | |
426 | e->trueEnsuresConstraints = constraintList_new(); | |
427 | e->falseEnsuresConstraints = constraintList_new(); | |
428 | ||
429 | // e = makeDataTypeConstraints(e); | |
430 | ||
431 | DPRINTF((message ("exprNode_multistatement Analysising %s %s at", exprNode_unparse( e), | |
432 | fileloc_unparse(exprNode_getfileloc(e) ) ) ) ); | |
433 | ||
434 | if (exprNode_handleError (e)) | |
435 | { | |
436 | return FALSE; | |
437 | } | |
438 | ||
439 | data = e->edata; | |
440 | ||
441 | ret = TRUE; | |
442 | ||
443 | switch (e->kind) | |
444 | { | |
445 | ||
446 | case XPR_FOR: | |
447 | // ret = message ("%s %s", | |
448 | forPred = exprData_getPairA (data); | |
449 | forBody = exprData_getPairB (data); | |
450 | ||
451 | //first generate the constraints | |
452 | exprNode_generateConstraints (forPred); | |
453 | exprNode_generateConstraints (forBody); | |
454 | ||
455 | ||
456 | doFor (e, forPred, forBody); | |
457 | ||
458 | break; | |
459 | ||
460 | case XPR_FORPRED: | |
461 | // ret = message ("for (%s; %s; %s)", | |
462 | exprNode_generateConstraints (exprData_getTripleInit (data) ); | |
463 | test = exprData_getTripleTest (data); | |
464 | exprNode_exprTraverse (test,FALSE, FALSE, exprNode_loc(e)); | |
9280addf | 465 | exprNode_generateConstraints (exprData_getTripleInc (data) ); |
466 | ||
616915dd | 467 | if (!exprNode_isError(test) ) |
468 | test->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(test); | |
469 | ||
470 | exprNode_generateConstraints (exprData_getTripleInc (data)); | |
471 | break; | |
9280addf | 472 | |
473 | case XPR_WHILE: | |
474 | e1 = exprData_getPairA (data); | |
475 | e2 = exprData_getPairB (data); | |
476 | ||
477 | exprNode_exprTraverse (e1, | |
478 | FALSE, FALSE, exprNode_loc(e1)); | |
479 | ||
480 | exprNode_generateConstraints (e2); | |
481 | ||
482 | e = doWhile (e, e1, e2); | |
483 | ||
484 | break; | |
485 | ||
616915dd | 486 | case XPR_IF: |
487 | DPRINTF(( "IF:") ); | |
488 | DPRINTF ((exprNode_unparse(e) ) ); | |
489 | // ret = message ("if (%s) %s", | |
490 | e1 = exprData_getPairA (data); | |
491 | e2 = exprData_getPairB (data); | |
492 | ||
493 | exprNode_exprTraverse (e1, | |
494 | FALSE, FALSE, exprNode_loc(e1)); | |
495 | ||
496 | exprNode_generateConstraints (e2); | |
497 | ||
498 | e = doIf (e, e1, e2); | |
499 | ||
500 | ||
501 | // e->constraints = constraintList_exprNodemerge (exprData_getPairA (data),exprData_getPairB(data)); | |
502 | break; | |
9280addf | 503 | |
504 | ||
616915dd | 505 | case XPR_IFELSE: |
506 | DPRINTF(("Starting IFELSE")); | |
507 | // ret = message ("if (%s) %s else %s", | |
508 | p = exprData_getTriplePred (data); | |
509 | trueBranch = exprData_getTripleTrue (data); | |
510 | falseBranch = exprData_getTripleFalse (data); | |
511 | ||
512 | exprNode_exprTraverse (p, | |
513 | FALSE, FALSE, exprNode_loc(p)); | |
514 | exprNode_generateConstraints (trueBranch); | |
515 | exprNode_generateConstraints (falseBranch); | |
516 | ||
9280addf | 517 | p->ensuresConstraints = exprNode_traversEnsuresConstraints (p); |
518 | p->trueEnsuresConstraints = exprNode_traversTrueEnsuresConstraints(p); | |
519 | // p->falseEnsuresConstraints = exprNode_traversFalseEnsuresConstraints(p); | |
520 | ||
616915dd | 521 | // do requires clauses |
9280addf | 522 | |
523 | { | |
524 | constraintList c1, c2; | |
525 | c1 = constraintList_copy (p->ensuresConstraints); | |
526 | ||
616915dd | 527 | cons = reflectChanges (trueBranch->requiresConstraints, p->trueEnsuresConstraints); |
528 | cons = reflectChanges (cons, | |
529 | p->ensuresConstraints); | |
530 | e->requiresConstraints = constraintList_copy (cons); | |
9280addf | 531 | /* |
616915dd | 532 | cons = reflectChanges (falseBranch->requiresConstraints, p->falseEnsuresConstraints); |
533 | cons = reflectChanges (cons, | |
9280addf | 534 | c1); |
616915dd | 535 | e->requiresConstraints = constraintList_addList (e->requiresConstraints, |
536 | cons); | |
537 | e->requiresConstraints = constraintList_addList (e->requiresConstraints, | |
538 | p->requiresConstraints); | |
9280addf | 539 | */ |
540 | ||
541 | } | |
616915dd | 542 | // do ensures clauses |
543 | // find the the ensures lists for each subbranch | |
544 | t = constraintList_mergeEnsures (p->trueEnsuresConstraints, trueBranch->ensuresConstraints); | |
545 | t = constraintList_mergeEnsures (p->ensuresConstraints, t); | |
546 | ||
547 | f = constraintList_mergeEnsures (p->falseEnsuresConstraints, falseBranch->ensuresConstraints); | |
548 | f = constraintList_mergeEnsures (p->ensuresConstraints, f); | |
549 | ||
550 | // find ensures for whole if/else statement | |
551 | ||
552 | e->ensuresConstraints = constraintList_logicalOr (t, f); | |
553 | DPRINTF( ("Done IFELSE") ); | |
554 | break; | |
9280addf | 555 | |
616915dd | 556 | case XPR_DOWHILE: |
557 | // ret = message ("do { %s } while (%s)", | |
558 | exprNode_generateConstraints (exprData_getPairB (data)); | |
559 | exprNode_generateConstraints (exprData_getPairA (data)); | |
560 | break; | |
561 | ||
562 | case XPR_BLOCK: | |
563 | // ret = message ("{ %s }", | |
564 | exprNode_generateConstraints (exprData_getSingle (data)); | |
565 | e->requiresConstraints = constraintList_copy ( (exprData_getSingle (data))->requiresConstraints ); | |
566 | e->ensuresConstraints = constraintList_copy ( (exprData_getSingle (data))->ensuresConstraints ); | |
567 | // e->constraints = (exprData_getSingle (data))->constraints; | |
568 | break; | |
569 | ||
570 | case XPR_STMT: | |
571 | case XPR_STMTLIST: | |
572 | return exprNode_stmtList (e); | |
573 | /*@notreached@*/ | |
574 | break; | |
575 | default: | |
576 | ret=FALSE; | |
577 | } | |
578 | return ret; | |
579 | } | |
580 | ||
581 | bool lltok_isBoolean_Op (lltok tok) | |
582 | { | |
583 | /*this should really be a switch statement but | |
584 | I don't want to violate the abstraction | |
585 | maybe this should go in lltok.c */ | |
586 | ||
587 | if (lltok_isEq_Op (tok) ) | |
588 | { | |
589 | return TRUE; | |
590 | } | |
591 | if (lltok_isAnd_Op (tok) ) | |
592 | ||
593 | { | |
594 | ||
595 | return TRUE; | |
596 | } | |
597 | if (lltok_isOr_Op (tok) ) | |
598 | { | |
599 | return TRUE; | |
600 | } | |
601 | ||
602 | if (lltok_isGt_Op (tok) ) | |
603 | { | |
604 | return TRUE; | |
605 | } | |
606 | if (lltok_isLt_Op (tok) ) | |
607 | { | |
608 | return TRUE; | |
609 | } | |
610 | ||
611 | if (lltok_isLe_Op (tok) ) | |
612 | { | |
613 | return TRUE; | |
614 | } | |
615 | ||
616 | if (lltok_isGe_Op (tok) ) | |
617 | { | |
618 | return TRUE; | |
619 | } | |
620 | ||
621 | return FALSE; | |
622 | ||
623 | } | |
624 | ||
625 | ||
626 | void exprNode_booleanTraverse (exprNode e, bool definatelv, bool definaterv, fileloc sequencePoint) | |
627 | { | |
628 | constraint cons; | |
629 | exprNode t1, t2; | |
630 | exprData data; | |
631 | lltok tok; | |
632 | constraintList tempList; | |
633 | data = e->edata; | |
634 | ||
635 | tok = exprData_getOpTok (data); | |
636 | ||
637 | ||
638 | t1 = exprData_getOpA (data); | |
639 | t2 = exprData_getOpB (data); | |
640 | ||
641 | ||
642 | /* arithmetic tests */ | |
643 | ||
644 | if (lltok_isEq_Op (tok) ) | |
645 | { | |
646 | cons = constraint_makeEnsureEqual (t1, t2, sequencePoint); | |
647 | e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons); | |
648 | } | |
649 | ||
650 | ||
651 | if (lltok_isLt_Op (tok) ) | |
652 | { | |
653 | cons = constraint_makeEnsureLessThan (t1, t2, sequencePoint); | |
654 | e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons); | |
655 | cons = constraint_makeEnsureGreaterThanEqual (t1, t2, sequencePoint); | |
656 | e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons); | |
657 | } | |
658 | ||
659 | ||
660 | if (lltok_isGe_Op (tok) ) | |
661 | { | |
662 | ||
663 | cons = constraint_makeEnsureGreaterThanEqual (t1, t2, sequencePoint); | |
664 | e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons); | |
665 | ||
666 | cons = constraint_makeEnsureLessThan (t1, t2, sequencePoint); | |
667 | e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons); | |
668 | ||
669 | } | |
670 | ||
671 | ||
672 | if (lltok_isGt_Op (tok) ) | |
673 | { | |
674 | cons = constraint_makeEnsureGreaterThan (t1, t2, sequencePoint); | |
675 | e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons); | |
676 | cons = constraint_makeEnsureLessThanEqual (t1, t2, sequencePoint); | |
677 | e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons); | |
678 | } | |
679 | ||
680 | if (lltok_isLe_Op (tok) ) | |
681 | { | |
682 | cons = constraint_makeEnsureLessThanEqual (t1, t2, sequencePoint); | |
683 | e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons); | |
684 | ||
685 | cons = constraint_makeEnsureGreaterThan (t1, t2, sequencePoint); | |
686 | e->falseEnsuresConstraints = constraintList_add(e->falseEnsuresConstraints, cons); | |
687 | } | |
688 | ||
689 | ||
690 | ||
691 | /*Logical operations */ | |
692 | ||
693 | if (lltok_isAnd_Op (tok) ) | |
694 | ||
695 | { | |
696 | //true ensures | |
697 | tempList = constraintList_copy (t1->trueEnsuresConstraints); | |
698 | tempList = constraintList_addList (tempList, t2->trueEnsuresConstraints); | |
699 | e->trueEnsuresConstraints = constraintList_addList(e->trueEnsuresConstraints, tempList); | |
700 | ||
701 | //false ensures: fens t1 or tens t1 and fens t2 | |
702 | tempList = constraintList_copy (t1->trueEnsuresConstraints); | |
703 | tempList = constraintList_addList (tempList, t2->falseEnsuresConstraints); | |
704 | tempList = constraintList_logicalOr (tempList, t1->falseEnsuresConstraints); | |
705 | e->falseEnsuresConstraints =constraintList_addList(e->falseEnsuresConstraints, tempList); | |
706 | ||
707 | } | |
708 | ||
709 | if (lltok_isOr_Op (tok) ) | |
710 | { | |
711 | //false ensures | |
712 | tempList = constraintList_copy (t1->falseEnsuresConstraints); | |
713 | tempList = constraintList_addList (tempList, t2->falseEnsuresConstraints); | |
714 | e->falseEnsuresConstraints = constraintList_addList(e->falseEnsuresConstraints, tempList); | |
715 | ||
716 | //true ensures: tens t1 or fens t1 and tens t2 | |
717 | tempList = constraintList_copy (t1->falseEnsuresConstraints); | |
718 | tempList = constraintList_addList (tempList, t2->trueEnsuresConstraints); | |
719 | tempList = constraintList_logicalOr (tempList, t1->trueEnsuresConstraints); | |
720 | e->trueEnsuresConstraints =constraintList_addList(e->trueEnsuresConstraints, tempList); | |
721 | ||
722 | } | |
723 | ||
724 | } | |
725 | ||
726 | bool exprNode_exprTraverse (exprNode e, bool definatelv, bool definaterv, fileloc sequencePoint) | |
727 | { | |
9280addf | 728 | exprNode t1, t2, fcn; |
616915dd | 729 | lltok tok; |
730 | bool handledExprNode; | |
731 | exprData data; | |
732 | constraint cons; | |
733 | ||
734 | if (exprNode_isError(e) ) | |
735 | { | |
736 | return FALSE; | |
737 | } | |
738 | ||
739 | DPRINTF((message ("exprNode_exprTraverset Analysising %s %s at", exprNode_unparse( e), | |
740 | fileloc_unparse(exprNode_getfileloc(e) ) ) ) ); | |
741 | ||
742 | e->requiresConstraints = constraintList_new(); | |
743 | e->ensuresConstraints = constraintList_new(); | |
744 | e->trueEnsuresConstraints = constraintList_new();; | |
745 | e->falseEnsuresConstraints = constraintList_new();; | |
746 | ||
747 | if (exprNode_isUnhandled (e) ) | |
748 | { | |
749 | return FALSE; | |
750 | } | |
751 | // e = makeDataTypeConstraints (e); | |
752 | ||
753 | handledExprNode = TRUE; | |
754 | ||
755 | data = e->edata; | |
756 | ||
757 | switch (e->kind) | |
758 | { | |
759 | ||
760 | ||
761 | case XPR_WHILEPRED: | |
762 | t1 = exprData_getSingle (data); | |
763 | exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint); | |
764 | e = exprNode_copyConstraints (e, t1); | |
765 | break; | |
766 | ||
767 | case XPR_FETCH: | |
768 | ||
769 | if (definatelv ) | |
770 | { | |
771 | t1 = (exprData_getPairA (data) ); | |
772 | t2 = (exprData_getPairB (data) ); | |
773 | cons = constraint_makeWriteSafeExprNode (t1, t2); | |
774 | } | |
775 | else | |
776 | { | |
777 | t1 = (exprData_getPairA (data) ); | |
778 | t2 = (exprData_getPairB (data) ); | |
779 | cons = constraint_makeReadSafeExprNode (t1, t2 ); | |
780 | } | |
781 | ||
782 | e->requiresConstraints = constraintList_add(e->requiresConstraints, cons); | |
783 | cons = constraint_makeEnsureMaxReadAtLeast (t1, t2, sequencePoint); | |
784 | e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons); | |
785 | ||
9280addf | 786 | cons = constraint_makeEnsureLteMaxRead (t2, t1); |
616915dd | 787 | e->trueEnsuresConstraints = constraintList_add(e->trueEnsuresConstraints, cons); |
788 | ||
789 | // cons = constraint_makeEnsureMinReadAtMost (t1, t2, sequencePoint); | |
790 | // e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons); | |
791 | ||
792 | exprNode_exprTraverse (exprData_getPairA (data), FALSE, TRUE, sequencePoint); | |
793 | exprNode_exprTraverse (exprData_getPairB (data), FALSE, TRUE, sequencePoint); | |
794 | ||
795 | /*@i325 Should check which is array/index. */ | |
796 | break; | |
797 | ||
798 | case XPR_PARENS: | |
799 | exprNode_exprTraverse (exprData_getUopNode (e->edata), definatelv, definaterv, sequencePoint); | |
800 | // e->constraints = constraintList_exprNodemerge (exprData_getUopNode (e->edata), exprNode_undefined); | |
801 | break; | |
802 | case XPR_INIT: | |
803 | /* //t1 = exprData_getInitId (data); */ | |
804 | t2 = exprData_getInitNode (data); | |
805 | //exprNode_exprTraverse (t1, TRUE, FALSE, sequencePoint ); | |
806 | ||
807 | exprNode_exprTraverse (t2, definatelv, TRUE, sequencePoint ); | |
808 | ||
809 | /* this test is nessecary because some expressions generate a null expression node. function pointer do that -- drl */ | |
810 | if ( (!exprNode_isError (e)) && (!exprNode_isError(t2)) ) | |
811 | { | |
812 | cons = constraint_makeEnsureEqual (e, t2, sequencePoint); | |
813 | e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons); | |
814 | } | |
815 | ||
816 | break; | |
817 | case XPR_ASSIGN: | |
818 | t1 = exprData_getOpA (data); | |
819 | t2 = exprData_getOpB (data); | |
820 | exprNode_exprTraverse (t1, TRUE, definaterv, sequencePoint ); | |
821 | lltok_unparse (exprData_getOpTok (data)); | |
822 | exprNode_exprTraverse (t2, definatelv, TRUE, sequencePoint ); | |
823 | ||
824 | /* this test is nessecary because some expressions generate a null expression node. function pointer do that -- drl */ | |
825 | if ( (!exprNode_isError (t1)) && (!exprNode_isError(t2)) ) | |
826 | { | |
827 | cons = constraint_makeEnsureEqual (t1, t2, sequencePoint); | |
828 | e->ensuresConstraints = constraintList_add(e->ensuresConstraints, cons); | |
829 | } | |
830 | break; | |
831 | case XPR_OP: | |
832 | t1 = exprData_getOpA (data); | |
833 | t2 = exprData_getOpB (data); | |
834 | ||
835 | exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint ); | |
836 | tok = exprData_getOpTok (data); | |
837 | exprNode_exprTraverse (t2, definatelv, definaterv, sequencePoint ); | |
838 | ||
839 | if (lltok_isBoolean_Op (tok) ) | |
840 | exprNode_booleanTraverse (e, definatelv, definaterv, sequencePoint); | |
841 | ||
842 | // e->constraints = constraintList_exprNodemerge (exprData_getOpA (data), exprData_getOpB (data)); | |
843 | break; | |
844 | case XPR_SIZEOFT: | |
845 | ctype_unparse (qtype_getType (exprData_getType (data) ) ); | |
846 | ||
847 | break; | |
848 | ||
849 | case XPR_SIZEOF: | |
850 | exprNode_exprTraverse (exprData_getSingle (data), definatelv, definaterv, sequencePoint ); | |
851 | // e->constraints = constraintList_exprNodemerge (exprData_getSingle (e->edata), exprNode_undefined); | |
852 | break; | |
853 | ||
854 | case XPR_CALL: | |
9280addf | 855 | fcn = exprData_getFcn(data); |
856 | ||
857 | exprNode_exprTraverse (fcn, definatelv, definaterv, sequencePoint ); | |
616915dd | 858 | exprNodeList_unparse (exprData_getArgs (data) ); |
9280addf | 859 | DPRINTF ( (message ("Got call that %s ( %s) ", exprNode_unparse(fcn), exprNodeList_unparse (exprData_getArgs (data) ) ) ) ); |
616915dd | 860 | |
9280addf | 861 | fcn->requiresConstraints = constraintList_addList (fcn->requiresConstraints, |
862 | checkCall (fcn, exprData_getArgs (data) ) ); | |
616915dd | 863 | |
9280addf | 864 | fcn->ensuresConstraints = constraintList_addList (fcn->ensuresConstraints, |
865 | getPostConditions(fcn, exprData_getArgs (data),e ) ); | |
866 | ||
867 | t1 = exprNode_createNew (exprNode_getType (e) ); | |
868 | ||
869 | checkArgumentList (t1, exprData_getArgs(data), sequencePoint); | |
616915dd | 870 | |
9280addf | 871 | |
872 | mergeResolve (e, t1, fcn); | |
873 | ||
616915dd | 874 | // e->constraints = constraintList_add (e->constraints, constraint_create (e,exprNode_undefined, GT, CALLSAFE ) ); |
875 | break; | |
876 | ||
877 | case XPR_RETURN: | |
878 | exprNode_exprTraverse (exprData_getSingle (data), definatelv, definaterv, sequencePoint ); | |
879 | break; | |
880 | ||
881 | case XPR_NULLRETURN: | |
882 | cstring_makeLiteral ("return");; | |
883 | break; | |
884 | ||
885 | ||
886 | case XPR_FACCESS: | |
887 | exprNode_exprTraverse (exprData_getFieldNode (data), definatelv, definaterv, sequencePoint ); | |
888 | exprData_getFieldName (data) ; | |
889 | break; | |
890 | ||
891 | case XPR_ARROW: | |
892 | exprNode_exprTraverse (exprData_getFieldNode (data), definatelv, definaterv, sequencePoint ); | |
893 | exprData_getFieldName (data); | |
894 | break; | |
895 | ||
896 | case XPR_STRINGLITERAL: | |
897 | cstring_copy (exprData_getLiteral (data)); | |
898 | break; | |
899 | ||
900 | case XPR_NUMLIT: | |
901 | cstring_copy (exprData_getLiteral (data)); | |
902 | break; | |
903 | ||
904 | case XPR_PREOP: | |
905 | t1 = exprData_getUopNode(data); | |
906 | tok = (exprData_getUopTok (data)); | |
907 | //lltok_unparse (exprData_getUopTok (data)); | |
908 | exprNode_exprTraverse (t1, definatelv, definaterv, sequencePoint ); | |
909 | /*handle * pointer access */ | |
910 | if (lltok_isInc_Op (tok) ) | |
911 | { | |
912 | DPRINTF(("doing ++(var)")); | |
913 | t1 = exprData_getUopNode (data); | |
914 | cons = constraint_makeMaxSetSideEffectPostIncrement (t1, sequencePoint ); | |
915 | e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons); | |
916 | } | |
917 | else if (lltok_isDec_Op (tok) ) | |
918 | { | |
919 | DPRINTF(("doing --(var)")); | |
920 | t1 = exprData_getUopNode (data); | |
921 | cons = constraint_makeMaxSetSideEffectPostDecrement (t1, sequencePoint ); | |
922 | e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons); | |
923 | } | |
924 | ||
925 | if (lltok_isMult( exprData_getUopTok (data) ) ) | |
926 | { | |
927 | if (definatelv) | |
928 | { | |
929 | cons = constraint_makeWriteSafeInt (t1, 0); | |
930 | } | |
931 | else | |
932 | { | |
933 | cons = constraint_makeReadSafeInt (t1, 0); | |
934 | } | |
935 | e->requiresConstraints = constraintList_add(e->requiresConstraints, cons); | |
936 | } | |
937 | ||
938 | /* ! expr */ | |
939 | if (lltok_isNot_Op (exprData_getUopTok (data) ) ) | |
940 | { | |
941 | e->trueEnsuresConstraints = constraintList_copy (t1->falseEnsuresConstraints); | |
942 | e->falseEnsuresConstraints = constraintList_copy (t1->trueEnsuresConstraints); | |
943 | } | |
944 | break; | |
945 | ||
946 | case XPR_POSTOP: | |
947 | ||
948 | exprNode_exprTraverse (exprData_getUopNode (data), TRUE, definaterv, sequencePoint ); | |
949 | lltok_unparse (exprData_getUopTok (data)); | |
950 | if (lltok_isInc_Op (exprData_getUopTok (data) ) ) | |
951 | { | |
952 | DPRINTF(("doing ++")); | |
953 | t1 = exprData_getUopNode (data); | |
954 | cons = constraint_makeMaxSetSideEffectPostIncrement (t1, sequencePoint ); | |
955 | e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons); | |
956 | } | |
957 | if (lltok_isDec_Op (exprData_getUopTok (data) ) ) | |
958 | { | |
959 | DPRINTF(("doing --")); | |
960 | t1 = exprData_getUopNode (data); | |
961 | cons = constraint_makeMaxSetSideEffectPostDecrement (t1, sequencePoint ); | |
962 | e->ensuresConstraints = constraintList_add (e->ensuresConstraints, cons); | |
963 | } | |
964 | break; | |
965 | default: | |
966 | handledExprNode = FALSE; | |
967 | } | |
968 | ||
969 | e->requiresConstraints = constraintList_preserveOrig ( e->requiresConstraints); | |
970 | e->ensuresConstraints = constraintList_preserveOrig ( e->ensuresConstraints); | |
9280addf | 971 | e->requiresConstraints = constraintList_addGeneratingExpr ( e->requiresConstraints, e); |
972 | ||
973 | e->ensuresConstraints = constraintList_addGeneratingExpr ( e->ensuresConstraints, e); | |
974 | ||
975 | DPRINTF((message ("ensures constraint for %s are %s", exprNode_unparse(e), constraintList_printDetailed(e->ensuresConstraints) ) )); | |
616915dd | 976 | |
977 | return handledExprNode; | |
978 | } | |
979 | ||
980 | ||
981 | constraintList exprNode_traversTrueEnsuresConstraints (exprNode e) | |
982 | { | |
9280addf | 983 | exprNode t1, t2; |
616915dd | 984 | |
985 | bool handledExprNode; | |
986 | // char * mes; | |
987 | exprData data; | |
988 | constraintList ret; | |
989 | ||
990 | if (exprNode_handleError (e)) | |
991 | { | |
992 | ret = constraintList_new(); | |
993 | return ret; | |
994 | } | |
995 | ret = constraintList_copy (e->trueEnsuresConstraints ); | |
996 | ||
997 | handledExprNode = TRUE; | |
998 | ||
999 | data = e->edata; | |
1000 | ||
1001 | switch (e->kind) | |
1002 | { | |
9280addf | 1003 | case XPR_WHILEPRED: |
1004 | t1 = exprData_getSingle (data); | |
1005 | ret = constraintList_addList ( ret,exprNode_traversTrueEnsuresConstraints (t1) ); | |
1006 | break; | |
616915dd | 1007 | |
1008 | case XPR_FETCH: | |
1009 | ||
1010 | ret = constraintList_addList (ret, | |
1011 | exprNode_traversTrueEnsuresConstraints | |
1012 | (exprData_getPairA (data) ) ); | |
1013 | ||
1014 | ret = constraintList_addList (ret, | |
1015 | exprNode_traversTrueEnsuresConstraints | |
1016 | (exprData_getPairB (data) ) ); | |
1017 | break; | |
1018 | case XPR_PREOP: | |
1019 | ||
1020 | ret = constraintList_addList (ret, | |
1021 | exprNode_traversTrueEnsuresConstraints | |
1022 | (exprData_getUopNode (data) ) ); | |
1023 | break; | |
1024 | ||
1025 | case XPR_PARENS: | |
1026 | ret = constraintList_addList (ret, exprNode_traversTrueEnsuresConstraints | |
1027 | (exprData_getUopNode (data) ) ); | |
1028 | break; | |
1029 | case XPR_ASSIGN: | |
1030 | ret = constraintList_addList (ret, | |
1031 | exprNode_traversTrueEnsuresConstraints | |
1032 | (exprData_getOpA (data) ) ); | |
1033 | ||
1034 | ret = constraintList_addList (ret, | |
1035 | exprNode_traversTrueEnsuresConstraints | |
1036 | (exprData_getOpB (data) ) ); | |
1037 | break; | |
1038 | case XPR_OP: | |
1039 | ret = constraintList_addList (ret, | |
1040 | exprNode_traversTrueEnsuresConstraints | |
1041 | (exprData_getOpA (data) ) ); | |
1042 | ||
1043 | ret = constraintList_addList (ret, | |
1044 | exprNode_traversTrueEnsuresConstraints | |
1045 | (exprData_getOpB (data) ) ); | |
1046 | break; | |
1047 | case XPR_SIZEOFT: | |
1048 | ||
1049 | // ctype_unparse (qtype_getType (exprData_getType (data) ) ); | |
1050 | ||
1051 | break; | |
1052 | ||
1053 | case XPR_SIZEOF: | |
1054 | ||
1055 | ret = constraintList_addList (ret, | |
1056 | exprNode_traversTrueEnsuresConstraints | |
1057 | (exprData_getSingle (data) ) ); | |
1058 | break; | |
1059 | ||
1060 | case XPR_CALL: | |
1061 | ret = constraintList_addList (ret, | |
1062 | exprNode_traversTrueEnsuresConstraints | |
1063 | (exprData_getFcn (data) ) ); | |
1064 | /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) ); | |
1065 | break; | |
1066 | ||
1067 | case XPR_RETURN: | |
1068 | ret = constraintList_addList (ret, | |
1069 | exprNode_traversTrueEnsuresConstraints | |
1070 | (exprData_getSingle (data) ) ); | |
1071 | break; | |
1072 | ||
1073 | case XPR_NULLRETURN: | |
1074 | // cstring_makeLiteral ("return");; | |
1075 | break; | |
1076 | ||
1077 | case XPR_FACCESS: | |
1078 | ret = constraintList_addList (ret, | |
1079 | exprNode_traversTrueEnsuresConstraints | |
1080 | (exprData_getFieldNode (data) ) ); | |
1081 | //exprData_getFieldName (data) ; | |
1082 | break; | |
1083 | ||
1084 | case XPR_ARROW: | |
1085 | ret = constraintList_addList (ret, | |
1086 | exprNode_traversTrueEnsuresConstraints | |
1087 | (exprData_getFieldNode (data) ) ); | |
1088 | // exprData_getFieldName (data); | |
1089 | break; | |
1090 | ||
1091 | case XPR_STRINGLITERAL: | |
1092 | // cstring_copy (exprData_getLiteral (data)); | |
1093 | break; | |
1094 | ||
1095 | case XPR_NUMLIT: | |
1096 | // cstring_copy (exprData_getLiteral (data)); | |
1097 | break; | |
1098 | case XPR_POSTOP: | |
1099 | ||
1100 | ret = constraintList_addList (ret, | |
1101 | exprNode_traversTrueEnsuresConstraints | |
1102 | (exprData_getUopNode (data) ) ); | |
1103 | break; | |
1104 | default: | |
1105 | break; | |
1106 | } | |
1107 | ||
1108 | return ret; | |
1109 | } | |
1110 | ||
9280addf | 1111 | constraintList exprNode_traversFalseEnsuresConstraints (exprNode e) |
1112 | { | |
1113 | exprNode t1, t2; | |
1114 | ||
1115 | bool handledExprNode; | |
1116 | // char * mes; | |
1117 | exprData data; | |
1118 | constraintList ret; | |
1119 | ||
1120 | if (exprNode_handleError (e)) | |
1121 | { | |
1122 | ret = constraintList_new(); | |
1123 | return ret; | |
1124 | } | |
1125 | ret = constraintList_copy (e->falseEnsuresConstraints ); | |
1126 | ||
1127 | handledExprNode = TRUE; | |
1128 | ||
1129 | data = e->edata; | |
1130 | ||
1131 | switch (e->kind) | |
1132 | { | |
1133 | case XPR_WHILEPRED: | |
1134 | t1 = exprData_getSingle (data); | |
1135 | ret = constraintList_addList ( ret,exprNode_traversFalseEnsuresConstraints (t1) ); | |
1136 | break; | |
1137 | ||
1138 | case XPR_FETCH: | |
1139 | ||
1140 | ret = constraintList_addList (ret, | |
1141 | exprNode_traversFalseEnsuresConstraints | |
1142 | (exprData_getPairA (data) ) ); | |
1143 | ||
1144 | ret = constraintList_addList (ret, | |
1145 | exprNode_traversFalseEnsuresConstraints | |
1146 | (exprData_getPairB (data) ) ); | |
1147 | break; | |
1148 | case XPR_PREOP: | |
1149 | ||
1150 | ret = constraintList_addList (ret, | |
1151 | exprNode_traversFalseEnsuresConstraints | |
1152 | (exprData_getUopNode (data) ) ); | |
1153 | break; | |
1154 | ||
1155 | case XPR_PARENS: | |
1156 | ret = constraintList_addList (ret, exprNode_traversFalseEnsuresConstraints | |
1157 | (exprData_getUopNode (data) ) ); | |
1158 | break; | |
1159 | case XPR_ASSIGN: | |
1160 | ret = constraintList_addList (ret, | |
1161 | exprNode_traversFalseEnsuresConstraints | |
1162 | (exprData_getOpA (data) ) ); | |
1163 | ||
1164 | ret = constraintList_addList (ret, | |
1165 | exprNode_traversFalseEnsuresConstraints | |
1166 | (exprData_getOpB (data) ) ); | |
1167 | break; | |
1168 | case XPR_OP: | |
1169 | ret = constraintList_addList (ret, | |
1170 | exprNode_traversFalseEnsuresConstraints | |
1171 | (exprData_getOpA (data) ) ); | |
1172 | ||
1173 | ret = constraintList_addList (ret, | |
1174 | exprNode_traversFalseEnsuresConstraints | |
1175 | (exprData_getOpB (data) ) ); | |
1176 | break; | |
1177 | case XPR_SIZEOFT: | |
1178 | ||
1179 | // ctype_unparse (qtype_getType (exprData_getType (data) ) ); | |
1180 | ||
1181 | break; | |
1182 | ||
1183 | case XPR_SIZEOF: | |
1184 | ||
1185 | ret = constraintList_addList (ret, | |
1186 | exprNode_traversFalseEnsuresConstraints | |
1187 | (exprData_getSingle (data) ) ); | |
1188 | break; | |
1189 | ||
1190 | case XPR_CALL: | |
1191 | ret = constraintList_addList (ret, | |
1192 | exprNode_traversFalseEnsuresConstraints | |
1193 | (exprData_getFcn (data) ) ); | |
1194 | /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) ); | |
1195 | break; | |
1196 | ||
1197 | case XPR_RETURN: | |
1198 | ret = constraintList_addList (ret, | |
1199 | exprNode_traversFalseEnsuresConstraints | |
1200 | (exprData_getSingle (data) ) ); | |
1201 | break; | |
1202 | ||
1203 | case XPR_NULLRETURN: | |
1204 | // cstring_makeLiteral ("return");; | |
1205 | break; | |
1206 | ||
1207 | case XPR_FACCESS: | |
1208 | ret = constraintList_addList (ret, | |
1209 | exprNode_traversFalseEnsuresConstraints | |
1210 | (exprData_getFieldNode (data) ) ); | |
1211 | //exprData_getFieldName (data) ; | |
1212 | break; | |
1213 | ||
1214 | case XPR_ARROW: | |
1215 | ret = constraintList_addList (ret, | |
1216 | exprNode_traversFalseEnsuresConstraints | |
1217 | (exprData_getFieldNode (data) ) ); | |
1218 | // exprData_getFieldName (data); | |
1219 | break; | |
1220 | ||
1221 | case XPR_STRINGLITERAL: | |
1222 | // cstring_copy (exprData_getLiteral (data)); | |
1223 | break; | |
1224 | ||
1225 | case XPR_NUMLIT: | |
1226 | // cstring_copy (exprData_getLiteral (data)); | |
1227 | break; | |
1228 | case XPR_POSTOP: | |
1229 | ||
1230 | ret = constraintList_addList (ret, | |
1231 | exprNode_traversFalseEnsuresConstraints | |
1232 | (exprData_getUopNode (data) ) ); | |
1233 | break; | |
1234 | default: | |
1235 | break; | |
1236 | } | |
1237 | ||
1238 | return ret; | |
1239 | } | |
1240 | ||
616915dd | 1241 | |
1242 | /* walk down the tree and get all requires Constraints in each subexpression*/ | |
1243 | constraintList exprNode_traversRequiresConstraints (exprNode e) | |
1244 | { | |
9280addf | 1245 | exprNode t1, t2; |
616915dd | 1246 | |
1247 | bool handledExprNode; | |
1248 | // char * mes; | |
1249 | exprData data; | |
1250 | constraintList ret; | |
1251 | ||
1252 | if (exprNode_handleError (e)) | |
1253 | { | |
1254 | ret = constraintList_new(); | |
1255 | return ret; | |
1256 | } | |
1257 | ret = constraintList_copy (e->requiresConstraints ); | |
1258 | ||
1259 | handledExprNode = TRUE; | |
1260 | ||
1261 | data = e->edata; | |
1262 | ||
1263 | switch (e->kind) | |
1264 | { | |
9280addf | 1265 | case XPR_WHILEPRED: |
1266 | t1 = exprData_getSingle (data); | |
1267 | ret = constraintList_addList ( ret,exprNode_traversRequiresConstraints (t1) ); | |
1268 | break; | |
616915dd | 1269 | |
1270 | case XPR_FETCH: | |
1271 | ||
1272 | ret = constraintList_addList (ret, | |
1273 | exprNode_traversRequiresConstraints | |
1274 | (exprData_getPairA (data) ) ); | |
1275 | ||
1276 | ret = constraintList_addList (ret, | |
1277 | exprNode_traversRequiresConstraints | |
1278 | (exprData_getPairB (data) ) ); | |
1279 | break; | |
1280 | case XPR_PREOP: | |
1281 | ||
1282 | ret = constraintList_addList (ret, | |
1283 | exprNode_traversRequiresConstraints | |
1284 | (exprData_getUopNode (data) ) ); | |
1285 | break; | |
1286 | ||
1287 | case XPR_PARENS: | |
1288 | ret = constraintList_addList (ret, exprNode_traversRequiresConstraints | |
1289 | (exprData_getUopNode (data) ) ); | |
1290 | break; | |
1291 | case XPR_ASSIGN: | |
1292 | ret = constraintList_addList (ret, | |
1293 | exprNode_traversRequiresConstraints | |
1294 | (exprData_getOpA (data) ) ); | |
1295 | ||
1296 | ret = constraintList_addList (ret, | |
1297 | exprNode_traversRequiresConstraints | |
1298 | (exprData_getOpB (data) ) ); | |
1299 | break; | |
1300 | case XPR_OP: | |
1301 | ret = constraintList_addList (ret, | |
1302 | exprNode_traversRequiresConstraints | |
1303 | (exprData_getOpA (data) ) ); | |
1304 | ||
1305 | ret = constraintList_addList (ret, | |
1306 | exprNode_traversRequiresConstraints | |
1307 | (exprData_getOpB (data) ) ); | |
1308 | break; | |
1309 | case XPR_SIZEOFT: | |
1310 | ||
1311 | // ctype_unparse (qtype_getType (exprData_getType (data) ) ); | |
1312 | ||
1313 | break; | |
1314 | ||
1315 | case XPR_SIZEOF: | |
1316 | ||
1317 | ret = constraintList_addList (ret, | |
1318 | exprNode_traversRequiresConstraints | |
1319 | (exprData_getSingle (data) ) ); | |
1320 | break; | |
1321 | ||
1322 | case XPR_CALL: | |
1323 | ret = constraintList_addList (ret, | |
1324 | exprNode_traversRequiresConstraints | |
1325 | (exprData_getFcn (data) ) ); | |
1326 | /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) ); | |
1327 | break; | |
1328 | ||
1329 | case XPR_RETURN: | |
1330 | ret = constraintList_addList (ret, | |
1331 | exprNode_traversRequiresConstraints | |
1332 | (exprData_getSingle (data) ) ); | |
1333 | break; | |
1334 | ||
1335 | case XPR_NULLRETURN: | |
1336 | // cstring_makeLiteral ("return");; | |
1337 | break; | |
1338 | ||
1339 | case XPR_FACCESS: | |
1340 | ret = constraintList_addList (ret, | |
1341 | exprNode_traversRequiresConstraints | |
1342 | (exprData_getFieldNode (data) ) ); | |
1343 | //exprData_getFieldName (data) ; | |
1344 | break; | |
1345 | ||
1346 | case XPR_ARROW: | |
1347 | ret = constraintList_addList (ret, | |
1348 | exprNode_traversRequiresConstraints | |
1349 | (exprData_getFieldNode (data) ) ); | |
1350 | // exprData_getFieldName (data); | |
1351 | break; | |
1352 | ||
1353 | case XPR_STRINGLITERAL: | |
1354 | // cstring_copy (exprData_getLiteral (data)); | |
1355 | break; | |
1356 | ||
1357 | case XPR_NUMLIT: | |
1358 | // cstring_copy (exprData_getLiteral (data)); | |
1359 | break; | |
1360 | case XPR_POSTOP: | |
1361 | ||
1362 | ret = constraintList_addList (ret, | |
1363 | exprNode_traversRequiresConstraints | |
1364 | (exprData_getUopNode (data) ) ); | |
1365 | break; | |
1366 | default: | |
1367 | break; | |
1368 | } | |
1369 | ||
1370 | return ret; | |
1371 | } | |
1372 | ||
1373 | ||
1374 | /* walk down the tree and get all Ensures Constraints in each subexpression*/ | |
1375 | constraintList exprNode_traversEnsuresConstraints (exprNode e) | |
1376 | { | |
9280addf | 1377 | exprNode t1, t2; |
616915dd | 1378 | |
1379 | bool handledExprNode; | |
1380 | // char * mes; | |
1381 | exprData data; | |
1382 | // constraintExpr tmp; | |
1383 | // constraint cons; | |
1384 | constraintList ret; | |
1385 | ||
1386 | ||
1387 | if (exprNode_handleError (e)) | |
1388 | { | |
1389 | ret = constraintList_new(); | |
1390 | return ret; | |
1391 | } | |
1392 | ||
1393 | ret = constraintList_copy (e->ensuresConstraints ); | |
1394 | handledExprNode = TRUE; | |
1395 | ||
1396 | data = e->edata; | |
1397 | ||
1398 | DPRINTF( (message ( | |
1399 | "exprnode_traversEnsuresConstraints call for %s with constraintList of %s", | |
1400 | exprNode_unparse (e), | |
1401 | constraintList_print(e->ensuresConstraints) | |
1402 | ) | |
1403 | )); | |
1404 | ||
1405 | ||
1406 | switch (e->kind) | |
1407 | { | |
9280addf | 1408 | case XPR_WHILEPRED: |
1409 | t1 = exprData_getSingle (data); | |
1410 | ret = constraintList_addList ( ret,exprNode_traversEnsuresConstraints (t1) ); | |
1411 | break; | |
616915dd | 1412 | |
1413 | case XPR_FETCH: | |
1414 | ||
1415 | ret = constraintList_addList (ret, | |
1416 | exprNode_traversEnsuresConstraints | |
1417 | (exprData_getPairA (data) ) ); | |
1418 | ||
1419 | ret = constraintList_addList (ret, | |
1420 | exprNode_traversEnsuresConstraints | |
1421 | (exprData_getPairB (data) ) ); | |
1422 | break; | |
1423 | case XPR_PREOP: | |
1424 | ||
1425 | ret = constraintList_addList (ret, | |
1426 | exprNode_traversEnsuresConstraints | |
1427 | (exprData_getUopNode (data) ) ); | |
1428 | break; | |
1429 | ||
1430 | case XPR_PARENS: | |
1431 | ret = constraintList_addList (ret, exprNode_traversEnsuresConstraints | |
1432 | (exprData_getUopNode (data) ) ); | |
1433 | break; | |
1434 | case XPR_ASSIGN: | |
1435 | ret = constraintList_addList (ret, | |
1436 | exprNode_traversEnsuresConstraints | |
1437 | (exprData_getOpA (data) ) ); | |
1438 | ||
1439 | ret = constraintList_addList (ret, | |
1440 | exprNode_traversEnsuresConstraints | |
1441 | (exprData_getOpB (data) ) ); | |
1442 | break; | |
1443 | case XPR_OP: | |
1444 | ret = constraintList_addList (ret, | |
1445 | exprNode_traversEnsuresConstraints | |
1446 | (exprData_getOpA (data) ) ); | |
1447 | ||
1448 | ret = constraintList_addList (ret, | |
1449 | exprNode_traversEnsuresConstraints | |
1450 | (exprData_getOpB (data) ) ); | |
1451 | break; | |
1452 | case XPR_SIZEOFT: | |
1453 | ||
1454 | // ctype_unparse (qtype_getType (exprData_getType (data) ) ); | |
1455 | ||
1456 | break; | |
1457 | ||
1458 | case XPR_SIZEOF: | |
1459 | ||
1460 | ret = constraintList_addList (ret, | |
1461 | exprNode_traversEnsuresConstraints | |
1462 | (exprData_getSingle (data) ) ); | |
1463 | break; | |
1464 | ||
1465 | case XPR_CALL: | |
1466 | ret = constraintList_addList (ret, | |
1467 | exprNode_traversEnsuresConstraints | |
1468 | (exprData_getFcn (data) ) ); | |
1469 | /*@i11*/ // exprNodeList_unparse (exprData_getArgs (data) ); | |
1470 | break; | |
1471 | ||
1472 | case XPR_RETURN: | |
1473 | ret = constraintList_addList (ret, | |
1474 | exprNode_traversEnsuresConstraints | |
1475 | (exprData_getSingle (data) ) ); | |
1476 | break; | |
1477 | ||
1478 | case XPR_NULLRETURN: | |
1479 | // cstring_makeLiteral ("return");; | |
1480 | break; | |
1481 | ||
1482 | case XPR_FACCESS: | |
1483 | ret = constraintList_addList (ret, | |
1484 | exprNode_traversEnsuresConstraints | |
1485 | (exprData_getFieldNode (data) ) ); | |
1486 | //exprData_getFieldName (data) ; | |
1487 | break; | |
1488 | ||
1489 | case XPR_ARROW: | |
1490 | ret = constraintList_addList (ret, | |
1491 | exprNode_traversEnsuresConstraints | |
1492 | (exprData_getFieldNode (data) ) ); | |
1493 | // exprData_getFieldName (data); | |
1494 | break; | |
1495 | ||
1496 | case XPR_STRINGLITERAL: | |
1497 | // cstring_copy (exprData_getLiteral (data)); | |
1498 | break; | |
1499 | ||
1500 | case XPR_NUMLIT: | |
1501 | // cstring_copy (exprData_getLiteral (data)); | |
1502 | break; | |
1503 | case XPR_POSTOP: | |
1504 | ||
1505 | ret = constraintList_addList (ret, | |
1506 | exprNode_traversEnsuresConstraints | |
1507 | (exprData_getUopNode (data) ) ); | |
1508 | break; | |
1509 | default: | |
1510 | break; | |
1511 | } | |
1512 | DPRINTF( (message ( | |
1513 | "exprnode_traversEnsuresConstraints call for %s with constraintList of is returning %s", | |
1514 | exprNode_unparse (e), | |
1515 | // constraintList_print(e->ensuresConstraints), | |
1516 | constraintList_print(ret) | |
1517 | ) | |
1518 | )); | |
1519 | ||
1520 | ||
1521 | return ret; | |
1522 | } | |
1523 |