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65f973be | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
c59f5181 | 3 | ** Copyright (C) 1994-2003 University of Virginia, |
65f973be | 4 | ** Massachusetts Institute of Technology |
5 | ** | |
6 | ** This program is free software; you can redistribute it and/or modify it | |
7 | ** under the terms of the GNU General Public License as published by the | |
8 | ** Free Software Foundation; either version 2 of the License, or (at your | |
9 | ** option) any later version. | |
10 | ** | |
11 | ** This program is distributed in the hope that it will be useful, but | |
12 | ** WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | ** General Public License for more details. | |
15 | ** | |
16 | ** The GNU General Public License is available from http://www.gnu.org/ or | |
17 | ** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
18 | ** MA 02111-1307, USA. | |
19 | ** | |
155af98d | 20 | ** For information on splint: info@splint.org |
21 | ** To report a bug: splint-bug@splint.org | |
11db3170 | 22 | ** For more information: http://www.splint.org |
65f973be | 23 | */ |
24 | ||
3aaedf88 | 25 | /* |
26 | ** constraintExpr.c | |
27 | */ | |
28 | ||
b7b694d6 | 29 | /* #define DEBUGPRINT 1 */ |
3aaedf88 | 30 | |
1b8ae690 | 31 | # include "splintMacros.nf" |
3aaedf88 | 32 | # include "basic.h" |
33 | # include "cgrammar.h" | |
34 | # include "cgrammar_tokens.h" | |
35 | ||
36 | # include "exprChecks.h" | |
3aaedf88 | 37 | # include "exprNodeSList.h" |
38 | ||
3aaedf88 | 39 | /*@-czechfcns@*/ |
40 | ||
393e573f | 41 | /*@access exprNode@*/ /* !!! NO! Don't do this recklessly! */ |
749f175a | 42 | // /*@-nullderef@*/ /* !!! DRL needs to fix this code! */ |
43 | // /*@-nullstate@*/ /* !!! DRL needs to fix this code! */ | |
44 | // /*@-temptrans@*/ /* !!! DRL needs to fix this code! */ | |
3aaedf88 | 45 | |
749f175a | 46 | /*@only@*/ /*@notnull@*/ |
47 | constraintExpr constraintExpr_makeIntLiteral (long i); | |
86d93ed3 | 48 | static ctype constraintExpr_getOrigType (constraintExpr p_e); |
49 | static bool constraintExpr_hasTypeChange(constraintExpr p_e) /*@*/; | |
920a3797 | 50 | |
28bf4b0b | 51 | static /*@only@*/ constraintExpr constraintExpr_makeBinaryOpConstraintExprIntLiteral (/*@only@*/constraintExpr p_expr, int p_literal); |
bb25bea6 | 52 | |
920a3797 | 53 | |
86d93ed3 | 54 | /*@only@*/ static constraintExpr |
55 | doSRefFixInvarConstraintTerm (/*@only@*/ constraintExpr p_e, | |
56 | sRef p_s, ctype p_ct); | |
57 | ||
d46ce6a4 | 58 | /*@only@*/ static constraintExpr |
28bf4b0b | 59 | doSRefFixConstraintParamTerm (/*@only@*/ constraintExpr p_e, /*@temp@*/ /*@observer@*/ exprNodeList p_arglist) /*@modifies p_e@*/; |
c3e695ff | 60 | |
4ab867d6 | 61 | static /*@only@*/ constraintExpr |
28bf4b0b | 62 | doFixResultTerm (/*@only@*/ constraintExpr p_e, /*@exposed@*/ exprNode p_fcnCall) |
63 | /*@modifies p_e@*/; | |
86d93ed3 | 64 | |
65 | static bool constraintExpr_canGetCType (constraintExpr p_e) /*@*/; | |
66 | ||
67 | static ctype constraintExpr_getCType (constraintExpr p_e); | |
68 | ||
69 | static /*@only@*/ constraintExpr constraintExpr_adjustMaxSetForCast(/*@only@*/ constraintExpr p_e, ctype p_ct); | |
70 | ||
749f175a | 71 | /*@special@*/ /*@notnull@*/ static constraintExpr constraintExpr_makeBinaryOp (void) |
b7b694d6 | 72 | /* @allocates result->data @ @sets result->kind @ */ ; |
3aaedf88 | 73 | |
d46ce6a4 | 74 | void constraintExpr_free (/*@only@*/ constraintExpr expr) |
75 | { | |
76 | if (constraintExpr_isDefined(expr) ) | |
77 | { | |
78 | switch (expr->kind) | |
79 | { | |
80 | case unaryExpr: | |
81 | constraintExprData_freeUnaryExpr(expr->data); | |
82 | break; | |
83 | case binaryexpr: | |
84 | constraintExprData_freeBinaryExpr(expr->data); | |
85 | break; | |
86 | case term: | |
87 | constraintExprData_freeTerm(expr->data); | |
88 | break; | |
89 | default: | |
90 | BADEXIT; | |
91 | } | |
bb25bea6 | 92 | |
93 | expr->data = NULL; | |
d46ce6a4 | 94 | free (expr); |
95 | } | |
96 | else | |
97 | { | |
98 | llcontbug(message("attempted to free null pointer in constraintExpr_free")); | |
99 | } | |
100 | } | |
101 | ||
3aaedf88 | 102 | bool constraintExpr_isLit (constraintExpr expr) |
103 | { | |
dc92450f | 104 | llassert (expr != NULL); |
3aaedf88 | 105 | |
106 | if (expr->kind == term) | |
107 | { | |
108 | constraintTerm term = constraintExprData_termGetTerm (expr->data); | |
109 | if (constraintTerm_isIntLiteral (term) ) | |
110 | { | |
111 | return TRUE; | |
112 | } | |
113 | ||
114 | } | |
115 | return FALSE; | |
116 | } | |
117 | ||
7c9c4a67 | 118 | static bool isZeroBinaryOp (constraintExpr expr) |
119 | { | |
120 | constraintExpr e2; | |
121 | ||
7272a1c1 | 122 | llassert (expr != NULL); /* evans 2001-07-18 */ |
123 | ||
7c9c4a67 | 124 | if (!constraintExpr_isBinaryExpr (expr) ) |
125 | { | |
126 | return FALSE; | |
127 | } | |
128 | ||
129 | ||
130 | e2 = constraintExprData_binaryExprGetExpr2(expr->data); | |
131 | ||
7272a1c1 | 132 | llassert (e2 != NULL); /* evans 2001-07-18 */ |
133 | ||
7c9c4a67 | 134 | if (constraintExpr_isBinaryExpr (e2) ) |
135 | { | |
136 | constraintExpr e1; | |
137 | constraintExprBinaryOpKind op; | |
138 | ||
139 | op = constraintExprData_binaryExprGetOp (e2->data); | |
140 | ||
141 | e1 = constraintExprData_binaryExprGetExpr1(e2->data); | |
142 | ||
143 | if (constraintExpr_isLit(e1) ) | |
144 | { | |
145 | if (constraintExpr_getValue(e1) == 0 ) | |
146 | { | |
147 | return TRUE; | |
148 | } | |
149 | } | |
150 | } | |
151 | return FALSE; | |
152 | } | |
153 | ||
154 | /* change expr + (o - expr) to (expr -expr) */ | |
155 | ||
749f175a | 156 | /*@only@*/ /*@notnull@*/ static constraintExpr removeZero (/*@only@*/ /*@returned@*/ constraintExpr expr) |
7c9c4a67 | 157 | { |
158 | constraintExpr expr1, expr2; | |
159 | ||
160 | constraintExpr temp; | |
161 | ||
162 | constraintExprBinaryOpKind op; | |
163 | ||
164 | constraintExprBinaryOpKind tempOp; | |
165 | ||
749f175a | 166 | llassert (expr != NULL); /* evans 2001-07-18 */ |
167 | ||
7c9c4a67 | 168 | if (!isZeroBinaryOp(expr) ) |
169 | return expr; | |
170 | ||
171 | ||
172 | expr1 = constraintExprData_binaryExprGetExpr1(expr->data); | |
173 | expr2 = constraintExprData_binaryExprGetExpr2(expr->data); | |
174 | op = constraintExprData_binaryExprGetOp(expr->data); | |
175 | ||
7272a1c1 | 176 | llassert( constraintExpr_isBinaryExpr(expr2) ); |
177 | ||
7c9c4a67 | 178 | temp = constraintExprData_binaryExprGetExpr2 (expr2->data); |
179 | temp = constraintExpr_copy (temp); | |
180 | ||
181 | tempOp = constraintExprData_binaryExprGetOp (expr2->data); | |
182 | ||
0c91982e | 183 | if (op == BINARYOP_PLUS) |
7c9c4a67 | 184 | op = tempOp; |
acfb6ad9 | 185 | else if (op == BINARYOP_MINUS) |
7c9c4a67 | 186 | { |
0c91982e | 187 | if (tempOp == BINARYOP_PLUS) |
acfb6ad9 | 188 | op = BINARYOP_MINUS; |
189 | else if (tempOp == BINARYOP_MINUS) | |
0c91982e | 190 | op = BINARYOP_PLUS; |
7c9c4a67 | 191 | else |
192 | BADEXIT; | |
193 | } | |
194 | else | |
195 | BADEXIT; | |
196 | ||
7c9c4a67 | 197 | expr->data = constraintExprData_binaryExprSetExpr2(expr->data, temp); |
198 | expr->data = constraintExprData_binaryExprSetOp(expr->data, op); | |
199 | ||
200 | return expr; | |
201 | } | |
202 | ||
3aaedf88 | 203 | |
749f175a | 204 | /*@only@*//*@notnull@*/ constraintExpr constraintExpr_propagateConstants (/*@only@*/ constraintExpr expr, |
3aaedf88 | 205 | /*@out@*/ bool * propagate, |
206 | /*@out@*/ int *literal) | |
207 | { | |
208 | constraintExpr expr1; | |
209 | constraintExpr expr2; | |
210 | bool propagate1, propagate2; | |
211 | int literal1, literal2; | |
d46ce6a4 | 212 | constraintExprBinaryOpKind op; |
3aaedf88 | 213 | |
214 | propagate1 = FALSE; | |
215 | propagate2 = FALSE; | |
216 | ||
217 | literal1 = 0; | |
218 | literal2 = 0; | |
219 | ||
220 | *propagate = FALSE; | |
221 | *literal = 0; | |
222 | ||
a779b61e | 223 | |
dc92450f | 224 | llassert (expr != NULL); |
3aaedf88 | 225 | |
b7b694d6 | 226 | /* we simplify unaryExpr elsewhere */ |
d46ce6a4 | 227 | if (expr->kind != binaryexpr) |
3aaedf88 | 228 | return expr; |
229 | ||
d46ce6a4 | 230 | op = constraintExprData_binaryExprGetOp (expr->data); |
3aaedf88 | 231 | |
bb7c2085 | 232 | DPRINTF((message("constraintExpr_propagateConstants: binaryexpr: %s", constraintExpr_unparse(expr) ) ) ); |
7c9c4a67 | 233 | |
234 | expr = removeZero(expr); | |
3aaedf88 | 235 | |
236 | expr1 = constraintExprData_binaryExprGetExpr1(expr->data); | |
237 | expr2 = constraintExprData_binaryExprGetExpr2(expr->data); | |
238 | ||
d46ce6a4 | 239 | expr1 = constraintExpr_copy(expr1); |
240 | expr2 = constraintExpr_copy(expr2); | |
241 | ||
3aaedf88 | 242 | expr1 = constraintExpr_propagateConstants (expr1, &propagate1, &literal1); |
243 | expr2 = constraintExpr_propagateConstants (expr2, &propagate2, &literal2); | |
244 | ||
a779b61e | 245 | expr1 = removeZero(expr1); |
246 | expr2 = removeZero(expr2); | |
247 | ||
248 | ||
3aaedf88 | 249 | *propagate = propagate1 || propagate2; |
7c9c4a67 | 250 | |
0c91982e | 251 | if (op == BINARYOP_PLUS) |
7c9c4a67 | 252 | *literal = literal1 + literal2; |
acfb6ad9 | 253 | else if (op == BINARYOP_MINUS) |
7c9c4a67 | 254 | *literal = literal1 - literal2; |
255 | else | |
256 | BADEXIT; | |
257 | ||
3aaedf88 | 258 | if ( constraintExpr_isLit (expr1) && constraintExpr_isLit (expr2) ) |
259 | { | |
b9904f57 | 260 | long t1, t2; |
3aaedf88 | 261 | t1 = constraintExpr_getValue (expr1); |
262 | t2 = constraintExpr_getValue (expr2); | |
7c9c4a67 | 263 | llassert(*propagate == FALSE); |
3aaedf88 | 264 | *propagate = FALSE; |
a8e557d3 | 265 | |
d46ce6a4 | 266 | constraintExpr_free (expr); |
267 | constraintExpr_free (expr1); | |
268 | constraintExpr_free (expr2); | |
269 | ||
0c91982e | 270 | if (op == BINARYOP_PLUS ) |
bb7c2085 | 271 | return (constraintExpr_makeIntLiteral ((t1+t2) )); |
acfb6ad9 | 272 | else if (op == BINARYOP_MINUS) |
bb7c2085 | 273 | return (constraintExpr_makeIntLiteral ((t1-t2) )); |
3aaedf88 | 274 | else |
d46ce6a4 | 275 | BADEXIT; |
3aaedf88 | 276 | } |
d46ce6a4 | 277 | |
278 | ||
3aaedf88 | 279 | if (constraintExpr_isLit (expr1) ) |
280 | { | |
3aaedf88 | 281 | *propagate = TRUE; |
d46ce6a4 | 282 | |
7c9c4a67 | 283 | *literal += constraintExpr_getValue (expr1); |
d46ce6a4 | 284 | |
0c91982e | 285 | if (op == BINARYOP_PLUS) |
7c9c4a67 | 286 | { |
287 | constraintExpr_free(expr1); | |
288 | constraintExpr_free(expr); | |
289 | return expr2; | |
290 | } | |
acfb6ad9 | 291 | else if (op == BINARYOP_MINUS) |
7c9c4a67 | 292 | { |
a779b61e | 293 | |
7c9c4a67 | 294 | constraintExpr temp; |
295 | ||
296 | /* this is an ugly kludge to deal with not | |
297 | having a unary minus operation...*/ | |
a779b61e | 298 | |
7c9c4a67 | 299 | temp = constraintExpr_makeIntLiteral (0); |
300 | temp = constraintExpr_makeSubtractExpr (temp, expr2); | |
301 | ||
302 | constraintExpr_free(expr1); | |
303 | constraintExpr_free(expr); | |
304 | ||
305 | return temp; | |
306 | } | |
7272a1c1 | 307 | else |
308 | { | |
309 | BADBRANCH; /* evans 2001-07-18 */ | |
310 | } | |
3aaedf88 | 311 | } |
312 | ||
3aaedf88 | 313 | if (constraintExpr_isLit (expr2) ) |
314 | { | |
315 | *propagate = TRUE; | |
a8e557d3 | 316 | |
0c91982e | 317 | if ( op == BINARYOP_PLUS ) |
3aaedf88 | 318 | *literal += constraintExpr_getValue (expr2); |
acfb6ad9 | 319 | else if (op == BINARYOP_MINUS) |
3aaedf88 | 320 | *literal -= constraintExpr_getValue (expr2); |
7c9c4a67 | 321 | else |
322 | BADEXIT; | |
323 | ||
d46ce6a4 | 324 | |
325 | constraintExpr_free(expr2); | |
326 | constraintExpr_free(expr); | |
3aaedf88 | 327 | return expr1; |
328 | } | |
3aaedf88 | 329 | |
bb7c2085 | 330 | DPRINTF((message("constraintExpr_propagateConstants returning: %s", constraintExpr_unparse(expr) ) ) ); |
3aaedf88 | 331 | |
d46ce6a4 | 332 | expr->data = constraintExprData_binaryExprSetExpr1 (expr->data, expr1); |
333 | expr->data = constraintExprData_binaryExprSetExpr2 (expr->data, expr2); | |
334 | ||
7c9c4a67 | 335 | expr = removeZero(expr); |
3aaedf88 | 336 | return expr; |
337 | } | |
338 | ||
749f175a | 339 | /*@notnull@*/ /*@only@*/ static constraintExpr constraintExpr_combineConstants (/*@only@*/ constraintExpr expr ) /*@modifies expr@*/ |
3aaedf88 | 340 | { |
341 | bool propagate; | |
342 | int literal; | |
343 | ||
bb7c2085 | 344 | DPRINTF ((message ("Before combine %s", constraintExpr_unparse(expr) ) ) ); |
3aaedf88 | 345 | expr = constraintExpr_propagateConstants (expr, &propagate, &literal); |
346 | ||
347 | ||
348 | if (propagate) | |
349 | { | |
350 | constraintExpr ret; | |
351 | ||
352 | if (literal != 0) | |
353 | { | |
354 | ret = constraintExpr_makeBinaryOpConstraintExprIntLiteral (expr, literal); | |
355 | expr = ret; | |
356 | } | |
357 | } | |
bb7c2085 | 358 | DPRINTF ((message ("After combine %s", constraintExpr_unparse(expr) ) ) ); |
3aaedf88 | 359 | return expr; |
360 | } | |
c3e695ff | 361 | |
dc92450f | 362 | /*@special@*/ |
abd7f895 | 363 | static /*@notnull@*/ constraintExpr constraintExpr_alloc (void) /*@post:isnull result->data@*/ |
3aaedf88 | 364 | { |
365 | constraintExpr ret; | |
366 | ret = dmalloc (sizeof (*ret) ); | |
367 | ret->kind = term; | |
368 | ret->data = NULL; | |
86d93ed3 | 369 | ret->ct = FALSE; |
370 | ret->origType = ctype_undefined; | |
3aaedf88 | 371 | return ret; |
372 | } | |
373 | ||
4ab867d6 | 374 | /*@only@*/ static constraintExprData copyExprData (/*@observer@*/ constraintExprData data, constraintExprKind kind) |
c3e695ff | 375 | { |
376 | constraintExprData ret; | |
377 | llassert(constraintExprData_isDefined(data)); | |
378 | ||
379 | switch (kind) | |
380 | { | |
381 | case binaryexpr: | |
382 | ret = constraintExprData_copyBinaryExpr(data); | |
383 | break; | |
384 | case unaryExpr: | |
385 | ret = constraintExprData_copyUnaryExpr(data); | |
386 | break; | |
387 | case term: | |
388 | ret = constraintExprData_copyTerm(data); | |
389 | break; | |
390 | default: | |
391 | BADEXIT; | |
392 | } | |
393 | return ret; | |
394 | } | |
3aaedf88 | 395 | |
396 | constraintExpr constraintExpr_copy (constraintExpr expr) | |
397 | { | |
398 | constraintExpr ret; | |
abd7f895 | 399 | ret = constraintExpr_alloc (); |
749f175a | 400 | |
401 | ||
402 | /*drl 03/02/2003 this shouldn't be used to copy a null | |
403 | expression but handle things cleanly if it is*/ | |
404 | llassert (!constraintExpr_isUndefined(expr) ); | |
405 | ||
406 | if (constraintExpr_isUndefined(expr) ) | |
407 | { | |
408 | return constraintExpr_undefined; | |
409 | } | |
410 | ||
3aaedf88 | 411 | ret->kind = expr->kind; |
c3e695ff | 412 | |
413 | ret->data = copyExprData (expr->data, expr->kind); | |
86d93ed3 | 414 | ret->ct = expr->ct; |
415 | ret->origType = expr->origType; | |
3aaedf88 | 416 | return ret; |
417 | } | |
418 | ||
419 | ||
28bf4b0b | 420 | /*@only@*/ static constraintExpr oldconstraintExpr_makeTermExprNode ( /*@dependent@*/ exprNode e) |
3aaedf88 | 421 | { |
422 | constraintExpr ret; | |
423 | constraintTerm t; | |
424 | ret = constraintExpr_alloc(); | |
425 | ret->kind = term; | |
426 | ret->data = dmalloc (sizeof *(ret->data) ); | |
427 | t = constraintTerm_makeExprNode (e); | |
428 | ret->data = constraintExprData_termSetTerm (ret->data, t); | |
86d93ed3 | 429 | ret->ct = FALSE; |
430 | ret->origType = ctype_undefined; | |
431 | ||
3aaedf88 | 432 | return ret; |
433 | } | |
434 | ||
28bf4b0b | 435 | constraintExpr constraintExpr_makeExprNode (exprNode e) |
3aaedf88 | 436 | { |
437 | sRef s; | |
438 | constraintExpr ret, ce1, ce2; | |
439 | exprData data; | |
440 | exprNode t, t1, t2; | |
441 | lltok tok; | |
442 | ||
dc92450f | 443 | llassert (e != NULL); |
3aaedf88 | 444 | |
445 | data = e->edata; | |
446 | ||
447 | switch (e->kind) | |
448 | { | |
449 | case XPR_SIZEOF: | |
450 | t = exprData_getSingle (data); | |
f96fe483 | 451 | while (exprNode_isInParens (t) ) |
452 | { | |
453 | t = exprData_getUopNode (t->edata); | |
454 | } | |
3aaedf88 | 455 | s = exprNode_getSref (t); |
456 | if (sRef_isFixedArray(s) ) | |
457 | { | |
458 | int size; | |
459 | ||
dc92450f | 460 | size = (int) sRef_getArraySize(s); |
3aaedf88 | 461 | ret = constraintExpr_makeIntLiteral (size); |
462 | } | |
e5081f8c | 463 | else if (exprNode_isStringLiteral (t)) |
f96fe483 | 464 | { |
e5081f8c | 465 | cstring str = multiVal_forceString (exprNode_getValue(t)); |
466 | ret = constraintExpr_makeIntLiteral (size_toLong (cstring_length (str) + 1)); | |
f96fe483 | 467 | } |
3aaedf88 | 468 | else |
469 | { | |
c3e695ff | 470 | DPRINTF ((message ("could not determine the size of %s", exprNode_unparse (e) ) ) ); |
3aaedf88 | 471 | ret = oldconstraintExpr_makeTermExprNode (e); |
472 | } | |
473 | break; | |
474 | ||
475 | case XPR_OP: | |
c3e695ff | 476 | DPRINTF ((message ("Examining operation %s", exprNode_unparse (e) ) ) ); |
3aaedf88 | 477 | t1 = exprData_getOpA (data); |
478 | t2 = exprData_getOpB (data); | |
479 | tok = exprData_getOpTok (data); | |
480 | ||
481 | if (lltok_isPlus_Op (tok) || lltok_isMinus_Op (tok) ) | |
482 | { | |
483 | ce1 = constraintExpr_makeExprNode (t1); | |
484 | ce2 = constraintExpr_makeExprNode (t2); | |
485 | ret = constraintExpr_parseMakeBinaryOp (ce1, tok, ce2); | |
486 | } | |
86d93ed3 | 487 | |
488 | ||
489 | /*@i333*/ | |
490 | /* uncomment this block to activate the cheesy heuristic | |
491 | for handling sizeof expressions | |
492 | ||
493 | / * | |
7edb30e6 | 494 | drl 8-11-001 |
495 | ||
496 | We handle expressions containing sizeof with the rule | |
497 | (sizeof type ) * Expr = Expr | |
498 | ||
499 | This is the total wronge way to do this but... | |
500 | it may be better than nothing | |
86d93ed3 | 501 | * / |
502 | ||
503 | ||
504 | ||
7edb30e6 | 505 | else if (lltok_isMult(tok) ) |
3aaedf88 | 506 | { |
7edb30e6 | 507 | if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) ) |
508 | { | |
509 | ret = constraintExpr_makeExprNode(t2); | |
510 | } | |
511 | else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) ) | |
512 | { | |
513 | ret = constraintExpr_makeExprNode(t1); | |
86d93ed3 | 514 | } |
7edb30e6 | 515 | else |
516 | { | |
517 | ret = oldconstraintExpr_makeTermExprNode (e); | |
518 | } | |
3aaedf88 | 519 | } |
86d93ed3 | 520 | */ |
7edb30e6 | 521 | else |
522 | ret = oldconstraintExpr_makeTermExprNode (e); | |
523 | ||
3aaedf88 | 524 | break; |
525 | case XPR_PARENS: | |
526 | t = exprData_getUopNode (data); | |
527 | ret = constraintExpr_makeExprNode (t); | |
528 | break; | |
529 | ||
530 | case XPR_PREOP: | |
531 | t = exprData_getUopNode (data); | |
532 | tok = exprData_getUopTok (data); | |
16c024b5 | 533 | if (lltok_isIncOp (tok)) |
3aaedf88 | 534 | { |
535 | constraintExpr temp; | |
536 | temp = constraintExpr_makeExprNode(t); | |
537 | ret = constraintExpr_makeIncConstraintExpr(temp); | |
538 | } | |
16c024b5 | 539 | else if (lltok_isDecOp (tok)) |
3aaedf88 | 540 | { |
541 | constraintExpr temp; | |
542 | temp = constraintExpr_makeExprNode(t); | |
543 | ret = constraintExpr_makeDecConstraintExpr(temp); | |
544 | } | |
545 | else | |
546 | ret = oldconstraintExpr_makeTermExprNode (e); | |
547 | break; | |
548 | ||
549 | case XPR_POSTOP: | |
550 | t = exprData_getUopNode (data); | |
551 | ret = constraintExpr_makeExprNode (t); | |
552 | break; | |
470b7798 | 553 | case XPR_CAST: |
554 | t = exprData_getCastNode (data); | |
555 | ret = constraintExpr_makeExprNode (t); | |
556 | break; | |
557 | case XPR_COMMA: | |
558 | t = exprData_getPairA(data); | |
c3e695ff | 559 | ret = constraintExpr_makeExprNode(t); |
11db3170 | 560 | /*@i3434*/ /* drl: I'm not sure if this is right. I'm adding a break to quiet Splint */ |
c3e695ff | 561 | break; |
3aaedf88 | 562 | default: |
563 | ret = oldconstraintExpr_makeTermExprNode (e); | |
564 | ||
565 | } | |
566 | return ret; | |
567 | } | |
568 | ||
b7b694d6 | 569 | /*@only@*/ constraintExpr constraintExpr_makeTermExprNode (/*@exposed@*/ exprNode e) |
3aaedf88 | 570 | { |
b7b694d6 | 571 | return oldconstraintExpr_makeTermExprNode(e); |
3aaedf88 | 572 | } |
573 | ||
28bf4b0b | 574 | static constraintExpr constraintExpr_makeTerm (/*@only@*/ constraintTerm t) |
920a3797 | 575 | { |
576 | constraintExpr ret; | |
577 | ||
578 | ret = constraintExpr_alloc(); | |
579 | ret->kind = term; | |
580 | ret->data = dmalloc (sizeof *(ret->data) ); | |
a779b61e | 581 | ret->data->term = NULL; |
920a3797 | 582 | ret->data = constraintExprData_termSetTerm (ret->data, t); |
86d93ed3 | 583 | ret->ct = FALSE; |
584 | ret->origType = ctype_undefined; | |
920a3797 | 585 | |
586 | return ret; | |
587 | } | |
3aaedf88 | 588 | |
28bf4b0b | 589 | constraintExpr constraintExpr_makeTermsRef (/*@temp@*/ sRef s) |
3aaedf88 | 590 | { |
591 | constraintExpr ret; | |
592 | constraintTerm t; | |
593 | ret = constraintExpr_alloc(); | |
594 | ret->kind = term; | |
595 | ret->data = dmalloc (sizeof *(ret->data) ); | |
596 | t = constraintTerm_makesRef (s); | |
597 | ret->data = constraintExprData_termSetTerm (ret->data, t); | |
86d93ed3 | 598 | |
599 | ret->ct = FALSE; | |
600 | ret->origType = ctype_undefined; | |
601 | ||
3aaedf88 | 602 | return ret; |
603 | } | |
604 | ||
749f175a | 605 | /*@special@*/ /*@notnull@*/ static constraintExpr makeUnaryOpGeneric (void) /*@allocates result->data@*/ /*@defines result->kind@*/ |
3aaedf88 | 606 | { |
607 | constraintExpr ret; | |
608 | ret = constraintExpr_alloc(); | |
609 | ret->kind = unaryExpr; | |
610 | ret->data = dmalloc ( sizeof *(ret->data) ); | |
a779b61e | 611 | ret->data->unaryOp.expr = constraintExpr_undefined; |
3aaedf88 | 612 | return ret; |
613 | } | |
614 | ||
749f175a | 615 | /*@notnull@*/ /*@only@*/ static constraintExpr constraintExpr_makeUnaryOpConstraintExpr (/*@only@*/ constraintExpr cexpr) |
3aaedf88 | 616 | { |
617 | constraintExpr ret; | |
920a3797 | 618 | ret = makeUnaryOpGeneric(); |
a8e557d3 | 619 | |
620 | /*@-uniondef@*/ | |
621 | /*@-compdef@*/ | |
b7b694d6 | 622 | ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr); |
623 | ret->data = constraintExprData_unaryExprSetOp (ret->data, UNARYOP_UNDEFINED); | |
624 | ||
3aaedf88 | 625 | return ret; |
b7b694d6 | 626 | |
a8e557d3 | 627 | /*@=compdef@*/ |
c3e695ff | 628 | /*@=uniondef@*/ |
3aaedf88 | 629 | } |
630 | ||
920a3797 | 631 | |
749f175a | 632 | /*@only@*/ /*@notnull@*/static constraintExpr constraintExpr_makeUnaryOp (/*@only@*/ constraintExpr cexpr, constraintExprUnaryOpKind Op ) |
920a3797 | 633 | { |
634 | constraintExpr ret; | |
635 | ret = makeUnaryOpGeneric(); | |
636 | ||
637 | ret->data = constraintExprData_unaryExprSetExpr (ret->data, cexpr); | |
638 | ret->data = constraintExprData_unaryExprSetOp (ret->data, Op); | |
639 | ||
86d93ed3 | 640 | ret->ct = FALSE; |
641 | ret->origType = ctype_undefined; | |
642 | ||
920a3797 | 643 | return ret; |
644 | } | |
645 | ||
749f175a | 646 | /*@only@*/ /*@notnull@*/ |
4ab867d6 | 647 | static constraintExpr constraintExpr_makeUnaryOpExprNode (/*@exposed@*/ exprNode expr) |
3aaedf88 | 648 | { |
649 | constraintExpr ret; | |
650 | constraintExpr sub; | |
651 | sub = constraintExpr_makeExprNode (expr); | |
652 | ret = constraintExpr_makeUnaryOpConstraintExpr(sub); | |
d46ce6a4 | 653 | |
3aaedf88 | 654 | return ret; |
655 | } | |
656 | ||
749f175a | 657 | /*@only@*/ /*@notnull@*/ |
658 | static constraintExpr constraintExpr_makeMaxSetConstraintExpr (/*@only@*/ constraintExpr c) | |
659 | { | |
660 | constraintExpr ret; | |
661 | ret = constraintExpr_makeUnaryOp (c, MAXSET); | |
662 | return ret; | |
663 | } | |
3aaedf88 | 664 | |
665 | ||
749f175a | 666 | /*@only@*/ /*@notnull@*/ |
28bf4b0b | 667 | static constraintExpr constraintExpr_makeSRefUnaryOp (/*@temp@*/ /*@observer@*/ sRef s, constraintExprUnaryOpKind op) |
3aaedf88 | 668 | { |
669 | constraintExpr ret; | |
670 | constraintExpr t; | |
671 | ||
672 | t = constraintExpr_makeTermsRef (s); | |
673 | ret = constraintExpr_makeUnaryOpConstraintExpr (t); | |
674 | ret->data = constraintExprData_unaryExprSetOp (ret->data, op); | |
d46ce6a4 | 675 | |
3aaedf88 | 676 | return ret; |
677 | } | |
678 | ||
bb25bea6 | 679 | /*@only@*/ |
28bf4b0b | 680 | constraintExpr constraintExpr_makeSRefMaxRead( sRef s) |
470b7798 | 681 | { |
682 | return (constraintExpr_makeSRefUnaryOp (s, MAXREAD) ); | |
683 | } | |
684 | ||
bb25bea6 | 685 | /*@only@*/ |
28bf4b0b | 686 | constraintExpr constraintExpr_makeSRefMaxset ( sRef s) |
3aaedf88 | 687 | { |
688 | return (constraintExpr_makeSRefUnaryOp (s, MAXSET) ); | |
689 | } | |
690 | ||
bb25bea6 | 691 | /*@only@*/ |
3aaedf88 | 692 | constraintExpr constraintExpr_parseMakeUnaryOp (lltok op, constraintExpr cexpr) |
693 | { | |
694 | constraintExpr ret; | |
695 | ret = constraintExpr_makeUnaryOpConstraintExpr ( cexpr); | |
696 | ||
80489f0a | 697 | switch (lltok_getTok (op)) |
3aaedf88 | 698 | { |
699 | case QMAXSET: | |
700 | ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXSET); | |
701 | break; | |
702 | case QMAXREAD: | |
703 | ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD); | |
704 | break; | |
705 | default: | |
2f2892c2 | 706 | llfatalbug (message ("Unhandled operation in constraint: %s", lltok_unparse (op))); |
3aaedf88 | 707 | } |
708 | return ret; | |
709 | } | |
710 | ||
bb25bea6 | 711 | /*@only@*/ |
4ab867d6 | 712 | constraintExpr constraintExpr_makeMaxSetExpr (/*@exposed@*/ exprNode expr) |
3aaedf88 | 713 | { |
714 | constraintExpr ret; | |
715 | ret = constraintExpr_makeExprNode (expr); | |
716 | ||
717 | ret = constraintExpr_makeMaxSetConstraintExpr (ret); | |
718 | ||
dc92450f | 719 | llassert (ret != NULL); |
3aaedf88 | 720 | return ret; |
721 | } | |
722 | ||
bb25bea6 | 723 | /*@only@*/ |
3aaedf88 | 724 | constraintExpr constraintExpr_makeMaxReadExpr (exprNode expr) |
725 | { | |
726 | constraintExpr ret; | |
727 | ret = constraintExpr_makeUnaryOpExprNode(expr); | |
728 | ret->data = constraintExprData_unaryExprSetOp (ret->data, MAXREAD); | |
729 | return ret; | |
730 | } | |
731 | ||
15b3d2b2 | 732 | # if 0 |
bb25bea6 | 733 | /*@only@*/ |
28bf4b0b | 734 | /*@unused@*/ static constraintExpr constraintExpr_makeMinSetExpr (/*@exposed@*/ exprNode expr) |
3aaedf88 | 735 | { |
736 | constraintExpr ret; | |
737 | ret = constraintExpr_makeUnaryOpExprNode(expr); | |
738 | ret->data = constraintExprData_unaryExprSetOp (ret->data, MINSET); | |
739 | return ret; | |
740 | } | |
741 | ||
bb25bea6 | 742 | /*@only@*/ |
28bf4b0b | 743 | /*@unused@*/ static constraintExpr constraintExpr_makeMinReadExpr (/*@exposed@*/ exprNode expr) |
3aaedf88 | 744 | { |
745 | constraintExpr ret; | |
746 | ret = constraintExpr_makeUnaryOpExprNode(expr); | |
747 | ret->data = constraintExprData_unaryExprSetOp (ret->data, MINREAD); | |
748 | return ret; | |
749 | } | |
15b3d2b2 | 750 | # endif |
3aaedf88 | 751 | |
bb25bea6 | 752 | /*@only@*/ |
4ab867d6 | 753 | constraintExpr constraintExpr_makeValueExpr (/*@exposed@*/ exprNode expr) |
3aaedf88 | 754 | { |
755 | constraintExpr ret; | |
756 | ret = constraintExpr_makeExprNode (expr); | |
757 | return ret; | |
758 | } | |
759 | ||
749f175a | 760 | /*@only@*/ /*@notnull@*/ |
b9904f57 | 761 | constraintExpr constraintExpr_makeIntLiteral (long i) |
3aaedf88 | 762 | { |
763 | constraintExpr ret; | |
764 | constraintTerm t; | |
765 | ret = constraintExpr_alloc(); | |
766 | ret->kind = term; | |
767 | ret->data = dmalloc (sizeof *(ret->data) ); | |
768 | t = constraintTerm_makeIntLiteral (i); | |
769 | ret->data = constraintExprData_termSetTerm (ret->data, t); | |
86d93ed3 | 770 | |
771 | ret->ct = FALSE; | |
772 | ret->origType = ctype_undefined; | |
773 | ||
3aaedf88 | 774 | return ret; |
775 | } | |
776 | ||
c3e695ff | 777 | /* |
3aaedf88 | 778 | constraintExpr constraintExpr_makeValueInt (int i) |
779 | { | |
780 | return constraintExpr_makeIntLiteral (i); | |
781 | } | |
c3e695ff | 782 | */ |
3aaedf88 | 783 | |
749f175a | 784 | /*@only@*/ /*@notnull@*/ |
28bf4b0b | 785 | /*@special@*/ static constraintExpr constraintExpr_makeBinaryOp (void) |
786 | /*@allocates result->data @*/ /*@sets result->kind @*/ | |
3aaedf88 | 787 | { |
788 | constraintExpr ret; | |
789 | ret = constraintExpr_alloc(); | |
790 | ret->kind = binaryexpr; | |
791 | ret->data = dmalloc ( sizeof *(ret->data) ); | |
a779b61e | 792 | |
793 | ret->data->binaryOp.expr1 = constraintExpr_undefined; | |
794 | ret->data->binaryOp.expr2 = constraintExpr_undefined; | |
795 | ||
3aaedf88 | 796 | return ret; |
797 | } | |
798 | ||
799 | ||
749f175a | 800 | static /*@notnull@*/ /*@only@*/ constraintExpr constraintExpr_makeBinaryOpConstraintExpr (/*@only@*/constraintExpr expr1, /*@only@*/ constraintExpr expr2) |
3aaedf88 | 801 | |
802 | { | |
803 | constraintExpr ret; | |
d46ce6a4 | 804 | |
3aaedf88 | 805 | ret = constraintExpr_makeBinaryOp(); |
806 | ret->data = constraintExprData_binaryExprSetExpr1 (ret->data, expr1); | |
807 | ret->data = constraintExprData_binaryExprSetExpr2 (ret->data, expr2); | |
84c9ffbf | 808 | ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_UNDEFINED); |
86d93ed3 | 809 | |
810 | ret->ct = FALSE; | |
811 | ret->origType = ctype_undefined; | |
812 | ||
3aaedf88 | 813 | return ret; |
814 | } | |
815 | ||
bb25bea6 | 816 | /*@only@*/ |
d46ce6a4 | 817 | constraintExpr constraintExpr_parseMakeBinaryOp (/*@only@*/ constraintExpr expr1, lltok op,/*@only@*/ constraintExpr expr2) |
3aaedf88 | 818 | { |
819 | constraintExpr ret; | |
820 | ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2); | |
80489f0a | 821 | |
822 | if (lltok_getTok (op) == TPLUS) | |
823 | { | |
824 | ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS); | |
825 | } | |
826 | else if (lltok_getTok (op) == TMINUS) | |
827 | { | |
828 | ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS); | |
829 | } | |
830 | else | |
831 | { | |
832 | llassert (FALSE); | |
833 | } | |
834 | ||
3aaedf88 | 835 | return ret; |
836 | } | |
837 | ||
15b3d2b2 | 838 | # if 0 |
bb25bea6 | 839 | /*@only@*/ |
28bf4b0b | 840 | /*@unused@*/ static constraintExpr constraintExpr_makeBinaryOpExprNode (/*@exposed@*/ exprNode expr1, /*@exposed@*/ exprNode expr2) |
3aaedf88 | 841 | { |
842 | constraintExpr ret; | |
843 | constraintExpr sub1, sub2; | |
844 | sub1 = constraintExpr_makeTermExprNode (expr1); | |
845 | sub2 = constraintExpr_makeTermExprNode (expr2); | |
846 | ret = constraintExpr_makeBinaryOpConstraintExpr(sub1, sub2); | |
847 | return ret; | |
848 | } | |
15b3d2b2 | 849 | # endif |
3aaedf88 | 850 | |
749f175a | 851 | static /*@notnull@*/ /*@only@*/ |
d46ce6a4 | 852 | constraintExpr constraintExpr_makeBinaryOpConstraintExprIntLiteral (/*@only@*/ constraintExpr expr, int literal) |
3aaedf88 | 853 | { |
854 | constraintExpr ret; | |
855 | constraintExpr constExpr; | |
856 | ||
857 | constExpr = constraintExpr_makeIntLiteral (literal); | |
858 | ret = constraintExpr_makeBinaryOpConstraintExpr (expr, constExpr); | |
0c91982e | 859 | ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS); |
3aaedf88 | 860 | return ret; |
861 | } | |
862 | ||
bb25bea6 | 863 | /*@only@*/ |
d46ce6a4 | 864 | constraintExpr constraintExpr_makeDecConstraintExpr (/*@only@*/constraintExpr expr) |
3aaedf88 | 865 | { |
866 | constraintExpr ret; | |
867 | constraintExpr inc; | |
868 | ||
869 | inc = constraintExpr_makeIntLiteral (1); | |
870 | ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc); | |
acfb6ad9 | 871 | ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_MINUS); |
3aaedf88 | 872 | return ret; |
873 | } | |
874 | ||
2934b455 | 875 | |
876 | /*@only@*/ constraintExpr constraintExpr_makeSubtractExpr (/*@only@*/ constraintExpr expr, /*@only@*/ constraintExpr addent) | |
877 | { | |
28bf4b0b | 878 | constraintExpr ret; |
2934b455 | 879 | |
bb7c2085 | 880 | DPRINTF ((message ("Making subtract expression") ) ); |
2934b455 | 881 | |
28bf4b0b | 882 | ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent); |
acfb6ad9 | 883 | ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_MINUS); |
28bf4b0b | 884 | return ret; |
2934b455 | 885 | } |
886 | ||
bb25bea6 | 887 | /*@only@*/ |
2934b455 | 888 | constraintExpr constraintExpr_makeAddExpr (/*@only@*/ |
bb25bea6 | 889 | constraintExpr expr, /*@only@*/ |
2934b455 | 890 | constraintExpr addent) |
3aaedf88 | 891 | { |
28bf4b0b | 892 | constraintExpr ret; |
3aaedf88 | 893 | |
bb7c2085 | 894 | DPRINTF ((message ("Doing addTerm simplification") ) ); |
3aaedf88 | 895 | |
28bf4b0b | 896 | ret = constraintExpr_makeBinaryOpConstraintExpr (expr, addent); |
0c91982e | 897 | ret->data = constraintExprData_binaryExprSetOp (ret->data, BINARYOP_PLUS); |
28bf4b0b | 898 | return ret; |
3aaedf88 | 899 | } |
900 | ||
2934b455 | 901 | |
bb25bea6 | 902 | /*@only@*/ |
d46ce6a4 | 903 | constraintExpr constraintExpr_makeIncConstraintExpr (/*@only@*/ constraintExpr expr) |
3aaedf88 | 904 | { |
905 | constraintExpr ret; | |
906 | constraintExpr inc; | |
907 | ||
908 | inc = constraintExpr_makeIntLiteral (1); | |
909 | ret = constraintExpr_makeBinaryOpConstraintExpr (expr, inc); | |
0c91982e | 910 | ret->data = constraintExprData_binaryExprSetOp(ret->data, BINARYOP_PLUS); |
3aaedf88 | 911 | return ret; |
912 | } | |
913 | ||
bb25bea6 | 914 | /*@only@*/ |
915 | static cstring constraintExprUnaryOpKind_print (constraintExprUnaryOpKind op) | |
3aaedf88 | 916 | { |
917 | switch (op) | |
918 | { | |
919 | case MAXSET: | |
03d670b6 | 920 | return message("maxSet"); |
3aaedf88 | 921 | case MINSET: |
03d670b6 | 922 | return message("minSet"); |
3aaedf88 | 923 | case MAXREAD: |
03d670b6 | 924 | return message("maxRead"); |
3aaedf88 | 925 | case MINREAD: |
03d670b6 | 926 | return message("minRead"); |
3aaedf88 | 927 | default: |
928 | llassert(FALSE); | |
929 | return message ("<(Unary OP OTHER>"); | |
930 | } | |
931 | } | |
932 | ||
933 | ||
bb25bea6 | 934 | /*@only@*/ |
935 | static cstring constraintExprBinaryOpKind_print (constraintExprBinaryOpKind op) | |
3aaedf88 | 936 | { |
937 | ||
938 | switch (op) | |
939 | { | |
0c91982e | 940 | case BINARYOP_PLUS: |
3aaedf88 | 941 | return message("+"); |
acfb6ad9 | 942 | case BINARYOP_MINUS: |
3aaedf88 | 943 | return message("-"); |
dc92450f | 944 | |
945 | default: | |
946 | llassert(FALSE); | |
947 | return message ("<binary OP Unknown>"); | |
3aaedf88 | 948 | } |
3aaedf88 | 949 | } |
950 | ||
951 | bool constraintExpr_similar (constraintExpr expr1, constraintExpr expr2) | |
952 | { | |
953 | constraintExprKind kind; | |
954 | ||
955 | llassert (expr1 != NULL); | |
956 | llassert (expr2 != NULL); | |
957 | if (expr1->kind != expr2->kind) | |
958 | return FALSE; | |
959 | ||
960 | kind = expr1->kind; | |
961 | ||
962 | switch (kind) | |
963 | { | |
964 | case term: | |
965 | return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data), | |
966 | constraintExprData_termGetTerm(expr2->data) ); | |
c3e695ff | 967 | /*@notreached@*/ break; |
3aaedf88 | 968 | |
969 | case unaryExpr: | |
970 | if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) ) | |
971 | return FALSE; | |
972 | ||
973 | return (constraintExpr_similar ( | |
974 | constraintExprData_unaryExprGetExpr (expr1->data), | |
975 | constraintExprData_unaryExprGetExpr (expr2->data) | |
976 | )); | |
977 | ||
978 | case binaryexpr: | |
979 | if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) ) | |
980 | return FALSE; | |
981 | ||
982 | if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr1 (expr1->data), | |
983 | constraintExprData_binaryExprGetExpr1 (expr2->data)) ) | |
984 | return FALSE; | |
985 | ||
986 | if (! constraintExpr_similar (constraintExprData_binaryExprGetExpr2 (expr1->data), | |
987 | constraintExprData_binaryExprGetExpr2 (expr2->data)) ) | |
988 | return FALSE; | |
989 | else | |
990 | return TRUE; | |
991 | /*@notreached@*/ | |
992 | break; | |
993 | ||
994 | default: | |
995 | llassert(FALSE); | |
996 | return FALSE; | |
997 | } | |
998 | /*@notreached@*/ | |
999 | return FALSE; | |
1000 | } | |
1001 | ||
1002 | bool constraintExpr_same (constraintExpr expr1, constraintExpr expr2) | |
1003 | { | |
1004 | constraintExprKind kind; | |
1005 | ||
1006 | llassert (expr1 != NULL); | |
1007 | llassert (expr2 != NULL); | |
1008 | if (expr1->kind != expr2->kind) | |
1009 | return FALSE; | |
1010 | ||
1011 | kind = expr1->kind; | |
1012 | ||
1013 | switch (kind) | |
1014 | { | |
1015 | case term: | |
1016 | return constraintTerm_similar (constraintExprData_termGetTerm(expr1->data), | |
1017 | constraintExprData_termGetTerm(expr2->data) ); | |
dc92450f | 1018 | /*@notreached@*/ break; |
3aaedf88 | 1019 | |
1020 | case unaryExpr: | |
1021 | if (constraintExprData_unaryExprGetOp (expr1->data) != constraintExprData_unaryExprGetOp (expr2->data) ) | |
1022 | return FALSE; | |
1023 | ||
1024 | return (constraintExpr_same ( | |
1025 | constraintExprData_unaryExprGetExpr (expr1->data), | |
1026 | constraintExprData_unaryExprGetExpr (expr2->data) | |
1027 | )); | |
1028 | ||
1029 | ||
1030 | case binaryexpr: | |
1031 | if (constraintExprData_binaryExprGetOp (expr1->data) != constraintExprData_binaryExprGetOp (expr2->data) ) | |
1032 | return FALSE; | |
1033 | ||
1034 | if (! constraintExpr_same (constraintExprData_binaryExprGetExpr1 (expr1->data), | |
1035 | constraintExprData_binaryExprGetExpr1 (expr2->data)) ) | |
1036 | return FALSE; | |
1037 | ||
1038 | if (! constraintExpr_same (constraintExprData_binaryExprGetExpr2 (expr1->data), | |
1039 | constraintExprData_binaryExprGetExpr2 (expr2->data)) ) | |
1040 | return FALSE; | |
1041 | else | |
1042 | return TRUE; | |
dc92450f | 1043 | /*@notreached@*/ break; |
3aaedf88 | 1044 | |
1045 | default: | |
1046 | llassert(FALSE); | |
1047 | return FALSE; | |
1048 | } | |
1049 | ||
1050 | /*@notreached@*/ | |
1051 | BADEXIT; | |
1052 | } | |
1053 | ||
bb25bea6 | 1054 | bool constraintExpr_search (/*@observer@*/ constraintExpr c, /*@observer@*/ constraintExpr old) |
3aaedf88 | 1055 | { |
1056 | bool ret = FALSE; | |
1057 | constraintExprKind kind; | |
1058 | constraintExpr temp; | |
1059 | ||
1060 | if ( constraintExpr_similar (c, old) ) | |
1061 | { | |
bb25bea6 | 1062 | DPRINTF((message ("Found %q", |
3aaedf88 | 1063 | constraintExpr_unparse(old) |
1064 | ))); | |
1065 | return TRUE; | |
1066 | } | |
1067 | ||
749f175a | 1068 | llassert (constraintExpr_isDefined (c) && constraintExpr_isDefined(old) ); |
1069 | ||
1070 | if ( !(constraintExpr_isDefined (c) && constraintExpr_isDefined(old) ) ) | |
1071 | return FALSE; | |
1072 | ||
3aaedf88 | 1073 | kind = c->kind; |
1074 | ||
1075 | switch (kind) | |
1076 | { | |
1077 | case term: | |
1078 | break; | |
1079 | case unaryExpr: | |
1080 | temp = constraintExprData_unaryExprGetExpr (c->data); | |
1081 | ret = ret || constraintExpr_search (temp, old); | |
1082 | break; | |
1083 | case binaryexpr: | |
1084 | ||
1085 | temp = constraintExprData_binaryExprGetExpr1 (c->data); | |
1086 | ret = ret || constraintExpr_search(temp, old); | |
1087 | ||
1088 | temp = constraintExprData_binaryExprGetExpr2 (c->data); | |
1089 | ret = ret || constraintExpr_search(temp, old); | |
1090 | break; | |
1091 | default: | |
1092 | llassert(FALSE); | |
1093 | } | |
1094 | return ret; | |
1095 | ||
1096 | } | |
1097 | ||
1098 | ||
28bf4b0b | 1099 | /*@only@*/ constraintExpr constraintExpr_searchandreplace (/*@only@*/ /*@unique@*/ constraintExpr c, /*@temp@*/ constraintExpr old, /*@temp@*/ constraintExpr newExpr ) |
3aaedf88 | 1100 | { |
1101 | constraintExprKind kind; | |
1102 | constraintExpr temp; | |
86d93ed3 | 1103 | constraintExpr ret; |
749f175a | 1104 | |
1105 | llassert(constraintExpr_isDefined (newExpr) && (constraintExpr_isDefined (old) && constraintExpr_isDefined(c) ) ); | |
3aaedf88 | 1106 | |
1107 | if ( constraintExpr_similar (c, old) ) | |
1108 | { | |
86d93ed3 | 1109 | |
1110 | ctype newType, cType; | |
1111 | ||
749f175a | 1112 | |
1113 | ||
86d93ed3 | 1114 | |
1115 | ret = constraintExpr_copy (newExpr); | |
749f175a | 1116 | llassert(constraintExpr_isDefined(ret) ); |
1117 | /*drl if newExpr != NULL then ret will != NULL*/ | |
1118 | ||
470b7798 | 1119 | DPRINTF((message ("Replacing %s with %s", |
28bf4b0b | 1120 | constraintExpr_unparse(old), constraintExpr_unparse(newExpr) |
3aaedf88 | 1121 | ))); |
86d93ed3 | 1122 | |
1123 | if (constraintExpr_canGetCType(c) && constraintExpr_canGetCType(newExpr) ) | |
1124 | { | |
1125 | cType = constraintExpr_getCType(c); | |
1126 | newType = constraintExpr_getCType(newExpr); | |
1127 | ||
1128 | if (ctype_match(cType,newType) ) | |
1129 | { | |
1130 | DPRINTF(( message("constraintExpr_searchandreplace: replacing " | |
1131 | " %s with type %s with %s with type %s", | |
1132 | constraintExpr_print(c), ctype_unparse(cType), | |
1133 | constraintExpr_print(newExpr), ctype_unparse(newType) | |
1134 | ) | |
1135 | )); | |
1136 | ||
1137 | ret->ct = TRUE; | |
1138 | ret->origType = cType; | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | if (constraintExpr_hasMaxSet(c) ) | |
1143 | { | |
1144 | if (constraintExpr_hasTypeChange(c)) | |
1145 | { | |
1146 | DPRINTF(( message("constraintExpr_searchandreplace: encountered " | |
1147 | "MaxSet with changed type %s ", | |
1148 | constraintExpr_print(c) ) | |
1149 | )); | |
1150 | ||
1151 | /*fix this with a conversation */ | |
1152 | ret = constraintExpr_adjustMaxSetForCast(ret, constraintExpr_getOrigType(c)); | |
1153 | } | |
1154 | } | |
bb25bea6 | 1155 | constraintExpr_free(c); |
86d93ed3 | 1156 | |
1157 | return ret; | |
3aaedf88 | 1158 | } |
1159 | ||
1160 | kind = c->kind; | |
1161 | ||
1162 | switch (kind) | |
1163 | { | |
1164 | case term: | |
1165 | break; | |
1166 | case unaryExpr: | |
1167 | temp = constraintExprData_unaryExprGetExpr (c->data); | |
d46ce6a4 | 1168 | temp = constraintExpr_copy(temp); |
28bf4b0b | 1169 | temp = constraintExpr_searchandreplace (temp, old, newExpr); |
3aaedf88 | 1170 | c->data = constraintExprData_unaryExprSetExpr (c->data, temp); |
1171 | break; | |
1172 | case binaryexpr: | |
1173 | ||
1174 | temp = constraintExprData_binaryExprGetExpr1 (c->data); | |
d46ce6a4 | 1175 | temp = constraintExpr_copy(temp); |
28bf4b0b | 1176 | temp = constraintExpr_searchandreplace (temp, old, newExpr); |
3aaedf88 | 1177 | c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp); |
1178 | ||
1179 | temp = constraintExprData_binaryExprGetExpr2 (c->data); | |
d46ce6a4 | 1180 | temp = constraintExpr_copy(temp); |
28bf4b0b | 1181 | temp = constraintExpr_searchandreplace (temp, old, newExpr); |
3aaedf88 | 1182 | c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp); |
1183 | break; | |
1184 | default: | |
1185 | llassert(FALSE); | |
1186 | } | |
1187 | return c; | |
3aaedf88 | 1188 | } |
1189 | ||
749f175a | 1190 | /*@notnull@*/ static constraintExpr constraintExpr_simplifyChildren (/*@returned@*/ /*@notnull@*/ constraintExpr c) |
3aaedf88 | 1191 | { |
1192 | constraintExprKind kind; | |
1193 | constraintExpr temp; | |
1194 | ||
1195 | kind = c->kind; | |
1196 | ||
1197 | switch (kind) | |
1198 | { | |
1199 | case term: | |
1200 | break; | |
1201 | case unaryExpr: | |
1202 | temp = constraintExprData_unaryExprGetExpr (c->data); | |
d46ce6a4 | 1203 | temp = constraintExpr_copy(temp); |
3aaedf88 | 1204 | temp = constraintExpr_simplify (temp); |
1205 | c->data = constraintExprData_unaryExprSetExpr (c->data, temp); | |
1206 | break; | |
1207 | case binaryexpr: | |
c3e695ff | 1208 | DPRINTF((message("constraintExpr_simplfiyChildren: simplify binary expression: %s",constraintExpr_unparse(c) ) ) ); |
3aaedf88 | 1209 | temp = constraintExprData_binaryExprGetExpr1 (c->data); |
d46ce6a4 | 1210 | temp = constraintExpr_copy(temp); |
3aaedf88 | 1211 | temp = constraintExpr_simplify (temp); |
1212 | ||
1213 | c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp); | |
1214 | ||
1215 | temp = constraintExprData_binaryExprGetExpr2 (c->data); | |
d46ce6a4 | 1216 | temp = constraintExpr_copy(temp); |
3aaedf88 | 1217 | temp = constraintExpr_simplify (temp); |
1218 | ||
1219 | c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp); | |
1220 | break; | |
1221 | default: | |
1222 | llassert(FALSE); | |
1223 | } | |
1224 | return c; | |
1225 | ||
1226 | } | |
1227 | ||
1228 | ||
28bf4b0b | 1229 | constraintExpr constraintExpr_setFileloc (/*@returned@*/ constraintExpr c, fileloc loc) /*@modifies c @*/ |
3aaedf88 | 1230 | { |
1231 | constraintTerm t; | |
1232 | constraintExpr temp; | |
1233 | ||
dc92450f | 1234 | llassert(c != NULL); |
3aaedf88 | 1235 | |
1236 | switch (c->kind) | |
1237 | { | |
1238 | case term: | |
1239 | t = constraintExprData_termGetTerm (c->data); | |
d46ce6a4 | 1240 | t = constraintTerm_copy(t); |
3aaedf88 | 1241 | t = constraintTerm_setFileloc (t, loc); |
1242 | c->data = constraintExprData_termSetTerm (c->data, t); | |
1243 | break; | |
1244 | case binaryexpr: | |
1245 | ||
1246 | temp = constraintExprData_binaryExprGetExpr1 (c->data); | |
d46ce6a4 | 1247 | temp = constraintExpr_copy(temp); |
3aaedf88 | 1248 | temp = constraintExpr_setFileloc (temp, loc); |
1249 | c->data = constraintExprData_binaryExprSetExpr1 (c->data, temp); | |
1250 | ||
1251 | temp = constraintExprData_binaryExprGetExpr2 (c->data); | |
d46ce6a4 | 1252 | temp = constraintExpr_copy(temp); |
3aaedf88 | 1253 | temp = constraintExpr_setFileloc (temp, loc); |
1254 | c->data = constraintExprData_binaryExprSetExpr2 (c->data, temp); | |
1255 | break; | |
1256 | case unaryExpr: | |
1257 | temp = constraintExprData_unaryExprGetExpr (c->data); | |
d46ce6a4 | 1258 | temp = constraintExpr_copy(temp); |
3aaedf88 | 1259 | temp = constraintExpr_setFileloc (temp, loc); |
1260 | c->data = constraintExprData_unaryExprSetExpr (c->data, temp); | |
1261 | break; | |
1262 | } | |
1263 | return c; | |
1264 | } | |
1265 | ||
749f175a | 1266 | static /*@only@*/ constraintExpr constraintExpr_simplifybinaryExpr (/*@only@*/ /*@notnull@*/ constraintExpr c) |
3aaedf88 | 1267 | { |
1268 | constraintExpr e1, e2; | |
7c9c4a67 | 1269 | constraintExprBinaryOpKind op; |
1270 | ||
3aaedf88 | 1271 | e1 = constraintExprData_binaryExprGetExpr1 (c->data); |
1272 | e2 = constraintExprData_binaryExprGetExpr2 (c->data); | |
1273 | ||
1274 | if (constraintExpr_canGetValue (e1) && constraintExpr_canGetValue(e2) ) | |
1275 | { | |
b9904f57 | 1276 | long i; |
3aaedf88 | 1277 | |
1278 | i = constraintExpr_getValue(e1) + constraintExpr_getValue (e2); | |
d46ce6a4 | 1279 | constraintExpr_free(c); |
3aaedf88 | 1280 | c = constraintExpr_makeIntLiteral (i); |
3aaedf88 | 1281 | } |
7c9c4a67 | 1282 | else |
1283 | { | |
1284 | op = constraintExprData_binaryExprGetOp (c->data); | |
acfb6ad9 | 1285 | if (op == BINARYOP_MINUS) |
7c9c4a67 | 1286 | if (constraintExpr_similar(e1, e2) ) |
1287 | { | |
1288 | constraintExpr_free(c); | |
1289 | c = constraintExpr_makeIntLiteral (0); | |
1290 | } | |
1291 | } | |
1292 | ||
3aaedf88 | 1293 | return c; |
1294 | } | |
1295 | ||
bb25bea6 | 1296 | /* |
1297 | this thing takes the lexpr and expr of a constraint and modifies lexpr | |
1298 | and returns a (possiblly new) value for expr | |
1299 | */ | |
1300 | /* if lexpr is a binary express say x + y, we set lexpr to x and return a value for expr such as expr_old - y */ | |
1301 | ||
1302 | /* the approach is a little Kludgy but seems to work. I should probably use something cleaner at some point ... */ | |
1303 | ||
1304 | ||
1305 | /*@only@*/ constraintExpr constraintExpr_solveBinaryExpr (constraintExpr lexpr, /*@only@*/ constraintExpr expr) | |
3aaedf88 | 1306 | { |
1307 | constraintExpr expr1, expr2; | |
1308 | constraintExprBinaryOpKind op; | |
749f175a | 1309 | |
1310 | llassert(constraintExpr_isDefined (lexpr) && constraintExpr_isDefined (expr) ); | |
3aaedf88 | 1311 | |
1312 | if (lexpr->kind != binaryexpr) | |
1313 | return expr; | |
1314 | ||
1315 | expr2 = constraintExprData_binaryExprGetExpr2 (lexpr->data); | |
1316 | expr1 = constraintExprData_binaryExprGetExpr1 (lexpr->data); | |
bb25bea6 | 1317 | |
3aaedf88 | 1318 | op = constraintExprData_binaryExprGetOp (lexpr->data); |
1319 | ||
bb25bea6 | 1320 | expr1 = constraintExpr_copy(expr1); |
1321 | expr2 = constraintExpr_copy(expr2); | |
749f175a | 1322 | |
1323 | llassert(constraintExpr_isDefined (expr1) && constraintExpr_isDefined (expr2) ); | |
1324 | ||
b7b694d6 | 1325 | /* drl possible problem : warning make sure this works */ |
1326 | ||
1327 | lexpr->kind = expr1->kind; | |
1328 | sfree (lexpr->data); | |
1329 | ||
1330 | lexpr->data = copyExprData (expr1->data, expr1->kind); | |
1331 | constraintExpr_free(expr1); | |
1332 | ||
0c91982e | 1333 | if (op == BINARYOP_PLUS) |
b7b694d6 | 1334 | expr = constraintExpr_makeSubtractExpr (expr, expr2); |
acfb6ad9 | 1335 | else if (op == BINARYOP_MINUS) |
b7b694d6 | 1336 | expr = constraintExpr_makeAddExpr (expr, expr2); |
1337 | else | |
1338 | BADEXIT; | |
1339 | ||
1340 | ||
1341 | return expr; | |
bb25bea6 | 1342 | |
c3e695ff | 1343 | /* |
1344 | #warning this needs to be checked | |
1345 | expr = constraintExpr_solveBinaryExpr (expr1, expr); | |
1346 | ||
1347 | expr = constraintExpr_solveBinaryExpr (expr2, expr); | |
1348 | return expr; | |
1349 | */ | |
3aaedf88 | 1350 | } |
1351 | ||
bb25bea6 | 1352 | static /*@only@*/ constraintExpr constraintExpr_simplifyunaryExpr (/*@only@*/ constraintExpr c) |
3aaedf88 | 1353 | { |
1354 | constraintExpr exp; | |
749f175a | 1355 | |
1356 | llassert(constraintExpr_isDefined (c) ); | |
3aaedf88 | 1357 | llassert (c->kind == unaryExpr); |
1358 | ||
d30bc0c7 | 1359 | DPRINTF ((message ("Doing constraintExpr_simplifyunaryExpr:%s", constraintExpr_unparse (c) ) ) ); |
3aaedf88 | 1360 | |
bb7c2085 | 1361 | if ((constraintExprData_unaryExprGetOp (c->data) != MAXSET) && |
3aaedf88 | 1362 | (constraintExprData_unaryExprGetOp (c->data) != MAXREAD) ) |
1363 | { | |
1364 | return c; | |
1365 | } | |
3aaedf88 | 1366 | |
1367 | exp = constraintExprData_unaryExprGetExpr (c->data); | |
a779b61e | 1368 | exp = constraintExpr_copy(exp); |
1369 | ||
749f175a | 1370 | llassert(constraintExpr_isDefined (exp) ); |
1371 | ||
3aaedf88 | 1372 | if (exp->kind == term) |
1373 | { | |
1374 | constraintTerm cterm; | |
1375 | ||
1376 | cterm = constraintExprData_termGetTerm (exp->data); | |
1377 | ||
1378 | if (constraintTerm_isStringLiteral(cterm) ) | |
1379 | { | |
1380 | cstring val; | |
1381 | val = constraintTerm_getStringLiteral (cterm); | |
1382 | if (constraintExprData_unaryExprGetOp (c->data) == MAXSET) | |
1383 | { | |
d46ce6a4 | 1384 | constraintExpr temp; |
1385 | ||
28bf4b0b | 1386 | temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) ); |
d46ce6a4 | 1387 | cstring_free(val); |
1388 | constraintExpr_free(c); | |
a779b61e | 1389 | constraintExpr_free(exp); |
1390 | ||
d46ce6a4 | 1391 | return temp; |
a779b61e | 1392 | |
3aaedf88 | 1393 | } |
1394 | if (constraintExprData_unaryExprGetOp (c->data) == MAXREAD) | |
1395 | { | |
d46ce6a4 | 1396 | constraintExpr temp; |
1397 | ||
28bf4b0b | 1398 | temp = constraintExpr_makeIntLiteral ((int)strlen (cstring_toCharsSafe(val) ) ); |
d46ce6a4 | 1399 | cstring_free(val); |
1400 | constraintExpr_free(c); | |
a779b61e | 1401 | constraintExpr_free(exp); |
1402 | ||
d46ce6a4 | 1403 | return temp; |
3aaedf88 | 1404 | } |
1405 | BADEXIT; | |
1406 | } | |
d30bc0c7 | 1407 | |
b7b694d6 | 1408 | /* slight Kludge to hanlde var [] = { , , }; |
1409 | ** type syntax I don't think this is sounds but it should be good | |
1410 | ** enough. The C stanrad is very confusing about initialization | |
1411 | ** -- DRL 7/25/01 | |
1412 | */ | |
d30bc0c7 | 1413 | |
1414 | if (constraintTerm_isInitBlock(cterm) ) | |
1415 | { | |
1416 | constraintExpr temp; | |
1417 | int len; | |
1418 | ||
1419 | len = constraintTerm_getInitBlockLength(cterm); | |
1420 | ||
1421 | temp = constraintExpr_makeIntLiteral (len ); | |
1422 | ||
1423 | constraintExpr_free(c); | |
1424 | DPRINTF(( message("Changed too %q", constraintExpr_print(temp) | |
1425 | ) )); | |
a779b61e | 1426 | constraintExpr_free(exp); |
d30bc0c7 | 1427 | return temp; |
1428 | } | |
1429 | ||
a779b61e | 1430 | constraintExpr_free(exp); |
3aaedf88 | 1431 | return c; |
1432 | } | |
1433 | ||
1434 | if (exp->kind != binaryexpr) | |
a779b61e | 1435 | { |
1436 | constraintExpr_free(exp); | |
1437 | return c; | |
1438 | } | |
1439 | ||
0c91982e | 1440 | if (constraintExprData_binaryExprGetOp (exp->data) == BINARYOP_PLUS ) |
3aaedf88 | 1441 | { |
1442 | ||
b7b694d6 | 1443 | /* if (constraintExpr_canGetValue (constraintExprData_binaryExprGetExpr2 (exp->data) ) ) */ |
3aaedf88 | 1444 | { |
1445 | ||
4ab867d6 | 1446 | constraintExpr temp, temp2; |
3aaedf88 | 1447 | |
bb7c2085 | 1448 | DPRINTF ((message ("Doing fancy simplification") ) ); |
3aaedf88 | 1449 | |
1450 | temp = constraintExprData_binaryExprGetExpr2 (exp->data); | |
1451 | ||
1452 | temp2 = constraintExprData_binaryExprGetExpr1 (exp->data); | |
d46ce6a4 | 1453 | |
1454 | temp2 = constraintExpr_copy(temp2); | |
3aaedf88 | 1455 | c->data = constraintExprData_unaryExprSetExpr (c->data, temp2); |
1456 | ||
1457 | ||
bb25bea6 | 1458 | temp = constraintExpr_copy (temp); |
1459 | ||
2934b455 | 1460 | c = constraintExpr_makeSubtractExpr (c, temp); |
3aaedf88 | 1461 | |
bb7c2085 | 1462 | DPRINTF ((message ("Done fancy simplification:%s", constraintExpr_unparse (c) ) ) ); |
3aaedf88 | 1463 | } |
1464 | } | |
1465 | ||
bb7c2085 | 1466 | DPRINTF ((message ("constraintExpr_simplifyUnaryExpr: Done simplification:%s", constraintExpr_unparse (c) ) ) ); |
a779b61e | 1467 | |
1468 | constraintExpr_free(exp); | |
3aaedf88 | 1469 | return c; |
1470 | } | |
1471 | ||
1472 | ||
bb25bea6 | 1473 | /*@only@*/ constraintExpr constraintExpr_simplify (/*@only@*/ constraintExpr c) |
3aaedf88 | 1474 | { |
1475 | constraintExprKind kind; | |
bb25bea6 | 1476 | constraintExpr ret; |
3aaedf88 | 1477 | constraintTerm t; |
3aaedf88 | 1478 | |
bb7c2085 | 1479 | DPRINTF ((message ("Doing constraintExpr_simplify:%s", constraintExpr_unparse (c) ) ) ); |
bb25bea6 | 1480 | |
3aaedf88 | 1481 | |
bb25bea6 | 1482 | /*@i22*/ |
3aaedf88 | 1483 | |
11db3170 | 1484 | /* drl: I think this is an Splint bug */ |
bb25bea6 | 1485 | |
749f175a | 1486 | llassert ( constraintExpr_isDefined (c) ); |
1487 | if (constraintExpr_isUndefined (c) ) | |
1488 | { | |
1489 | return constraintExpr_undefined; | |
1490 | } | |
1491 | ||
bb25bea6 | 1492 | ret = constraintExpr_copy(c); |
749f175a | 1493 | llassert(constraintExpr_isDefined (ret) ); |
1494 | ||
bb25bea6 | 1495 | constraintExpr_free(c); |
1496 | ||
1497 | ret = constraintExpr_simplifyChildren (ret); | |
1498 | ||
1499 | ret = constraintExpr_combineConstants (ret); | |
1500 | ||
1501 | ret = constraintExpr_simplifyChildren (ret); | |
1502 | ||
1503 | ||
1504 | kind = ret->kind; | |
3aaedf88 | 1505 | |
1506 | switch (kind) | |
1507 | { | |
1508 | case term: | |
bb25bea6 | 1509 | t = constraintExprData_termGetTerm (ret->data); |
d46ce6a4 | 1510 | t = constraintTerm_copy(t); |
3aaedf88 | 1511 | t = constraintTerm_simplify (t); |
bb25bea6 | 1512 | ret->data = constraintExprData_termSetTerm (ret->data, t); |
3aaedf88 | 1513 | break; |
1514 | case unaryExpr: | |
bb25bea6 | 1515 | ret = constraintExpr_simplifyunaryExpr (ret); |
3aaedf88 | 1516 | break; |
1517 | case binaryexpr: | |
bb25bea6 | 1518 | ret = constraintExpr_simplifybinaryExpr (ret); |
3aaedf88 | 1519 | break; |
1520 | default: | |
1521 | llassert(FALSE); | |
bb25bea6 | 1522 | } |
1523 | ||
bb7c2085 | 1524 | DPRINTF ((message ("constraintExpr_simplify returning :%s", constraintExpr_unparse (ret) ) ) ); |
bb25bea6 | 1525 | return ret; |
3aaedf88 | 1526 | |
1527 | } | |
1528 | ||
bb25bea6 | 1529 | /*@only@*/ |
4ab867d6 | 1530 | cstring constraintExpr_unparse (/*@temp@*/ /*@observer@*/ constraintExpr ex) /*@*/ |
3aaedf88 | 1531 | { |
1532 | cstring st; | |
1533 | constraintExprKind kind; | |
1534 | ||
1535 | llassert (ex != NULL); | |
1536 | ||
1537 | kind = ex->kind; | |
1538 | ||
1539 | switch (kind) | |
1540 | { | |
1541 | case term: | |
a779b61e | 1542 | |
1543 | if (context_getFlag (FLG_PARENCONSTRAINT) ) | |
1544 | { | |
1545 | st = message ("(%q) ", constraintTerm_print (constraintExprData_termGetTerm (ex->data))); | |
1546 | } | |
1547 | else | |
1548 | { | |
1549 | st = message ("%q", constraintTerm_print (constraintExprData_termGetTerm (ex->data))); | |
1550 | } | |
3aaedf88 | 1551 | break; |
1552 | case unaryExpr: | |
a779b61e | 1553 | st = message ("%q(%q)", |
1554 | constraintExprUnaryOpKind_print (constraintExprData_unaryExprGetOp (ex->data) ), | |
3aaedf88 | 1555 | constraintExpr_unparse (constraintExprData_unaryExprGetExpr (ex->data) ) |
1556 | ); | |
1557 | break; | |
1558 | case binaryexpr: | |
a779b61e | 1559 | if (context_getFlag (FLG_PARENCONSTRAINT) ) |
1560 | { | |
1561 | st = message ("(%q) %q (%q)", | |
3aaedf88 | 1562 | constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ), |
1563 | constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data) | |
1564 | ), | |
1565 | constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) ) | |
1566 | ); | |
a779b61e | 1567 | } |
1568 | else | |
1569 | { | |
1570 | st = message ("%q %q %q", | |
1571 | constraintExpr_unparse (constraintExprData_binaryExprGetExpr1 (ex->data) ), | |
1572 | constraintExprBinaryOpKind_print (constraintExprData_binaryExprGetOp (ex->data) | |
1573 | ), | |
1574 | constraintExpr_unparse (constraintExprData_binaryExprGetExpr2 (ex->data) ) | |
1575 | ); | |
1576 | } | |
1577 | ||
3aaedf88 | 1578 | break; |
1579 | default: | |
1580 | llassert(FALSE); | |
1581 | st = message ("error"); | |
1582 | ||
1583 | } | |
1584 | ||
1585 | DPRINTF((message ("constraintExpr_unparse: '%s'",st) ) ); | |
1586 | return st; | |
1587 | } | |
1588 | ||
1589 | constraintExpr constraintExpr_doSRefFixBaseParam (/*@returned@*/ constraintExpr expr, exprNodeList arglist) | |
1590 | { | |
1591 | constraintTerm Term; | |
1592 | constraintExprKind kind; | |
1593 | constraintExpr expr1, expr2; | |
1594 | constraintExprData data; | |
1595 | llassert (expr != NULL); | |
1596 | ||
1597 | data = expr->data; | |
1598 | ||
1599 | kind = expr->kind; | |
1600 | ||
1601 | switch (kind) | |
1602 | { | |
1603 | case term: | |
1604 | Term = constraintExprData_termGetTerm(data); | |
d46ce6a4 | 1605 | Term = constraintTerm_copy(Term); |
1606 | ||
3aaedf88 | 1607 | Term = constraintTerm_doSRefFixBaseParam (Term, arglist); |
1608 | data = constraintExprData_termSetTerm(data, Term); | |
1609 | break; | |
1610 | case unaryExpr: | |
1611 | expr1 = constraintExprData_unaryExprGetExpr (data); | |
d46ce6a4 | 1612 | expr1 = constraintExpr_copy(expr1); |
1613 | ||
3aaedf88 | 1614 | expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist); |
1615 | data = constraintExprData_unaryExprSetExpr (data, expr1); | |
1616 | break; | |
1617 | case binaryexpr: | |
1618 | expr1 = constraintExprData_binaryExprGetExpr1 (data); | |
1619 | expr2 = constraintExprData_binaryExprGetExpr2 (data); | |
1620 | ||
d46ce6a4 | 1621 | expr1 = constraintExpr_copy(expr1); |
1622 | expr2 = constraintExpr_copy(expr2); | |
1623 | ||
3aaedf88 | 1624 | expr1 = constraintExpr_doSRefFixBaseParam (expr1, arglist); |
1625 | data = constraintExprData_binaryExprSetExpr1 (data, expr1); | |
1626 | expr2 = constraintExpr_doSRefFixBaseParam (expr2, arglist); | |
1627 | data = constraintExprData_binaryExprSetExpr2 (data, expr2); | |
1628 | ||
1629 | break; | |
1630 | default: | |
1631 | llassert(FALSE); | |
1632 | data = NULL; | |
1633 | } | |
1634 | return expr; | |
1635 | } | |
1636 | ||
86d93ed3 | 1637 | /* |
1638 | / *@only@* / constraintExpr constraintExpr_doSRefFixInvarConstraint (/ *@only@* / constraintExpr expr, sRef s, ctype ct) | |
1639 | { | |
1640 | constraintExprKind kind; | |
1641 | constraintExpr expr1, expr2; | |
1642 | constraintExprData data; | |
1643 | llassert (expr != NULL); | |
1644 | ||
1645 | data = expr->data; | |
1646 | ||
1647 | kind = expr->kind; | |
1648 | ||
1649 | switch (kind) | |
1650 | { | |
1651 | case term: | |
1652 | expr = doSRefFixInvarConstraintTerm (expr, s, ct); | |
1653 | break; | |
1654 | case unaryExpr: | |
1655 | expr1 = constraintExprData_unaryExprGetExpr (data); | |
1656 | expr1 = constraintExpr_copy(expr1); | |
1657 | expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct); | |
1658 | data = constraintExprData_unaryExprSetExpr (data, expr1); | |
1659 | break; | |
1660 | case binaryexpr: | |
1661 | expr1 = constraintExprData_binaryExprGetExpr1 (data); | |
1662 | expr2 = constraintExprData_binaryExprGetExpr2 (data); | |
1663 | ||
1664 | expr1 = constraintExpr_copy(expr1); | |
1665 | expr2 = constraintExpr_copy(expr2); | |
1666 | ||
1667 | expr1 = constraintExpr_doSRefFixInvarConstraint (expr1, s, ct); | |
1668 | data = constraintExprData_binaryExprSetExpr1 (data, expr1); | |
1669 | expr2 = constraintExpr_doSRefFixInvarConstraint (expr2, s, ct); | |
1670 | data = constraintExprData_binaryExprSetExpr2 (data, expr2); | |
1671 | ||
1672 | break; | |
1673 | default: | |
1674 | llassert(FALSE); | |
1675 | data = NULL; | |
1676 | } | |
1677 | return expr; | |
1678 | } | |
1679 | */ | |
1680 | ||
d46ce6a4 | 1681 | /*@only@*/ constraintExpr constraintExpr_doSRefFixConstraintParam (/*@only@*/ constraintExpr expr, exprNodeList arglist) /*@modifies expr@*/ |
3aaedf88 | 1682 | { |
1683 | constraintExprKind kind; | |
1684 | constraintExpr expr1, expr2; | |
1685 | constraintExprData data; | |
1686 | llassert (expr != NULL); | |
1687 | ||
1688 | data = expr->data; | |
1689 | ||
1690 | kind = expr->kind; | |
1691 | ||
1692 | switch (kind) | |
1693 | { | |
1694 | case term: | |
c3e695ff | 1695 | expr = doSRefFixConstraintParamTerm (expr, arglist); |
3aaedf88 | 1696 | break; |
1697 | case unaryExpr: | |
1698 | expr1 = constraintExprData_unaryExprGetExpr (data); | |
d46ce6a4 | 1699 | expr1 = constraintExpr_copy(expr1); |
3aaedf88 | 1700 | expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist); |
1701 | data = constraintExprData_unaryExprSetExpr (data, expr1); | |
1702 | break; | |
1703 | case binaryexpr: | |
1704 | expr1 = constraintExprData_binaryExprGetExpr1 (data); | |
1705 | expr2 = constraintExprData_binaryExprGetExpr2 (data); | |
1706 | ||
d46ce6a4 | 1707 | expr1 = constraintExpr_copy(expr1); |
1708 | expr2 = constraintExpr_copy(expr2); | |
1709 | ||
3aaedf88 | 1710 | expr1 = constraintExpr_doSRefFixConstraintParam (expr1, arglist); |
1711 | data = constraintExprData_binaryExprSetExpr1 (data, expr1); | |
1712 | expr2 = constraintExpr_doSRefFixConstraintParam (expr2, arglist); | |
1713 | data = constraintExprData_binaryExprSetExpr2 (data, expr2); | |
1714 | ||
1715 | break; | |
1716 | default: | |
1717 | llassert(FALSE); | |
1718 | data = NULL; | |
1719 | } | |
1720 | return expr; | |
1721 | } | |
1722 | ||
28bf4b0b | 1723 | /*@only@*/ constraintExpr constraintExpr_doFixResult (/*@only@*/ constraintExpr expr, /*@observer@*/ exprNode fcnCall) |
3aaedf88 | 1724 | { |
1725 | constraintExprKind kind; | |
1726 | constraintExpr expr1, expr2; | |
1727 | constraintExprData data; | |
1728 | llassert (expr != NULL); | |
1729 | ||
1730 | data = expr->data; | |
1731 | ||
1732 | kind = expr->kind; | |
1733 | ||
1734 | switch (kind) | |
1735 | { | |
1736 | case term: | |
c3e695ff | 1737 | expr = doFixResultTerm (expr, fcnCall); |
3aaedf88 | 1738 | break; |
1739 | case unaryExpr: | |
1740 | expr1 = constraintExprData_unaryExprGetExpr (data); | |
d46ce6a4 | 1741 | expr1 = constraintExpr_copy(expr1); |
1742 | ||
3aaedf88 | 1743 | expr1 = constraintExpr_doFixResult (expr1, fcnCall); |
1744 | data = constraintExprData_unaryExprSetExpr (data, expr1); | |
1745 | break; | |
1746 | case binaryexpr: | |
1747 | expr1 = constraintExprData_binaryExprGetExpr1 (data); | |
1748 | expr2 = constraintExprData_binaryExprGetExpr2 (data); | |
1749 | ||
d46ce6a4 | 1750 | expr1 = constraintExpr_copy(expr1); |
1751 | expr2 = constraintExpr_copy(expr2); | |
1752 | ||
3aaedf88 | 1753 | expr1 = constraintExpr_doFixResult (expr1, fcnCall); |
1754 | data = constraintExprData_binaryExprSetExpr1 (data, expr1); | |
1755 | expr2 = constraintExpr_doFixResult (expr2, fcnCall); | |
1756 | data = constraintExprData_binaryExprSetExpr2 (data, expr2); | |
1757 | ||
1758 | break; | |
1759 | default: | |
1760 | llassert(FALSE); | |
1761 | data = NULL; | |
1762 | } | |
1763 | return expr; | |
1764 | } | |
1765 | ||
dc92450f | 1766 | cstring constraintExpr_print (constraintExpr expr) /*@*/ |
3aaedf88 | 1767 | { |
b9904f57 | 1768 | return constraintExpr_unparse (expr); |
3aaedf88 | 1769 | } |
1770 | ||
dc92450f | 1771 | bool constraintExpr_hasMaxSet (constraintExpr expr) /*@*/ |
3aaedf88 | 1772 | { |
1773 | cstring t; | |
1774 | ||
1775 | t = constraintExpr_unparse(expr); | |
1776 | ||
03d670b6 | 1777 | if (cstring_containsLit(t, "maxSet") != NULL ) |
d46ce6a4 | 1778 | { |
1779 | cstring_free(t); | |
1780 | return (TRUE); | |
1781 | } | |
c3e695ff | 1782 | else |
d46ce6a4 | 1783 | { |
1784 | cstring_free(t); | |
1785 | return FALSE; | |
1786 | } | |
3aaedf88 | 1787 | } |
1788 | ||
1789 | ||
1790 | ||
1791 | /*returns 1 0 -1 like strcmp | |
1792 | 1 => expr1 > expr2 | |
1793 | 0 => expr1 == expr2 | |
1794 | -1 => expr1 < expr2 | |
1795 | */ | |
b9904f57 | 1796 | |
3aaedf88 | 1797 | int constraintExpr_compare (constraintExpr expr1, constraintExpr expr2) |
1798 | { | |
b9904f57 | 1799 | long value1, value2; |
3aaedf88 | 1800 | |
1801 | if (constraintExpr_similar (expr1, expr2) ) | |
1802 | { | |
1803 | return 0; | |
1804 | } | |
b9904f57 | 1805 | |
3aaedf88 | 1806 | value1 = constraintExpr_getValue(expr1); |
1807 | value2 = constraintExpr_getValue(expr2); | |
1808 | ||
1809 | if (value1 > value2) | |
1810 | return 1; | |
1811 | ||
1812 | if (value1 == value2) | |
1813 | return 0; | |
1814 | ||
1815 | else | |
1816 | return -1; | |
1817 | } | |
1818 | ||
b9904f57 | 1819 | long constraintExpr_getValue (constraintExpr expr) |
3aaedf88 | 1820 | { |
749f175a | 1821 | llassert (constraintExpr_isDefined(expr) ); |
3aaedf88 | 1822 | llassert (expr->kind == term); |
749f175a | 1823 | |
b9904f57 | 1824 | return (constraintTerm_getValue (constraintExprData_termGetTerm (expr->data))); |
3aaedf88 | 1825 | } |
1826 | ||
1827 | bool constraintExpr_canGetValue (constraintExpr expr) | |
1828 | { | |
749f175a | 1829 | llassert ( constraintExpr_isDefined (expr) ); |
1830 | if (constraintExpr_isUndefined (expr) ) | |
1831 | { | |
1832 | return FALSE; | |
1833 | } | |
1834 | ||
3aaedf88 | 1835 | switch (expr->kind) |
1836 | { | |
1837 | case term: | |
1838 | return constraintTerm_canGetValue (constraintExprData_termGetTerm (expr->data) ); | |
1839 | default: | |
1840 | return FALSE; | |
1841 | ||
1842 | } | |
c3e695ff | 1843 | |
1844 | BADEXIT; | |
3aaedf88 | 1845 | } |
1846 | ||
3aaedf88 | 1847 | fileloc constraintExpr_getFileloc (constraintExpr expr) |
1848 | { | |
1849 | constraintExpr e; | |
1850 | constraintTerm t; | |
1851 | constraintExprKind kind; | |
1852 | ||
749f175a | 1853 | llassert ( constraintExpr_isDefined (expr) ); |
1854 | if (constraintExpr_isUndefined (expr) ) | |
1855 | { | |
1856 | return fileloc_undefined; | |
1857 | } | |
1858 | ||
1859 | ||
3aaedf88 | 1860 | kind = expr->kind; |
1861 | ||
1862 | switch (kind) | |
1863 | { | |
1864 | case term: | |
1865 | t = constraintExprData_termGetTerm (expr->data); | |
1866 | return (constraintTerm_getFileloc (t) ); | |
c3e695ff | 1867 | /*@notreached@*/ |
3aaedf88 | 1868 | break; |
1869 | case unaryExpr: | |
1870 | e = constraintExprData_unaryExprGetExpr (expr->data); | |
1871 | return (constraintExpr_getFileloc (e) ); | |
c3e695ff | 1872 | /*@notreached@*/ |
3aaedf88 | 1873 | break; |
1874 | case binaryexpr: | |
1875 | e = constraintExprData_binaryExprGetExpr1 (expr->data); | |
1876 | return (constraintExpr_getFileloc (e) ); | |
c3e695ff | 1877 | /*@notreached@*/ |
1878 | break; | |
3aaedf88 | 1879 | } |
1880 | llassert (FALSE); | |
3aaedf88 | 1881 | return (fileloc_undefined); |
1882 | } | |
1883 | ||
c3e695ff | 1884 | /*drl moved from constriantTerm.c 5/20/001*/ |
4ab867d6 | 1885 | static /*@only@*/ constraintExpr |
1886 | doFixResultTerm (/*@only@*/ constraintExpr e, /*@exposed@*/ exprNode fcnCall) | |
c3e695ff | 1887 | { |
1888 | constraintTerm t; | |
1889 | sRef s; | |
a779b61e | 1890 | |
749f175a | 1891 | |
1892 | constraintExprData data; | |
1893 | constraintExprKind kind; | |
c3e695ff | 1894 | |
1895 | constraintExpr ret; | |
1896 | ||
749f175a | 1897 | llassert(constraintExpr_isDefined (e) ); |
1898 | ||
1899 | data = e->data; | |
1900 | kind = e->kind; | |
1901 | ||
c3e695ff | 1902 | llassert(kind == term); |
1903 | ||
1904 | t = constraintExprData_termGetTerm (data); | |
28bf4b0b | 1905 | llassert (constraintTerm_isDefined(t) ); |
c3e695ff | 1906 | |
1907 | ret = e; | |
a8e557d3 | 1908 | switch (constraintTerm_getKind(t) ) |
c3e695ff | 1909 | { |
1910 | case EXPRNODE: | |
1911 | break; | |
1912 | case INTLITERAL: | |
1913 | break; | |
1914 | ||
1915 | case SREF: | |
a8e557d3 | 1916 | s = constraintTerm_getSRef(t); |
c3e695ff | 1917 | if (sRef_isResult (s)) |
1918 | { | |
1919 | ret = constraintExpr_makeExprNode(fcnCall); | |
4ab867d6 | 1920 | constraintExpr_free(e); |
1921 | e = NULL; | |
1922 | } | |
1923 | else | |
1924 | { | |
1925 | e = NULL; | |
c3e695ff | 1926 | } |
1927 | break; | |
1928 | default: | |
1929 | BADEXIT; | |
1930 | } | |
1931 | ||
1932 | return ret; | |
1933 | ||
1934 | } | |
86d93ed3 | 1935 | /* |
1936 | / *@only@* / static constraintExpr | |
1937 | doSRefFixInvarConstraintTerm (/ *@only@* / constraintExpr e, | |
1938 | sRef s, ctype ct) | |
1939 | { | |
1940 | constraintTerm t; | |
1941 | ||
1942 | constraintExprData data = e->data; | |
1943 | ||
1944 | constraintExprKind kind = e->kind; | |
1945 | ||
1946 | constraintExpr ret; | |
c3e695ff | 1947 | |
86d93ed3 | 1948 | llassert(kind == term); |
1949 | ||
1950 | t = constraintExprData_termGetTerm (data); | |
1951 | llassert (constraintTerm_isDefined(t) ); | |
1952 | ||
1953 | ret = e; | |
1954 | ||
1955 | DPRINTF (("Fixing: %s", constraintExpr_print (e))); | |
1956 | ||
1957 | switch (constraintTerm_getKind(t)) | |
1958 | { | |
1959 | case EXPRNODE: | |
1960 | DPRINTF((message ("%q @ %q ", constraintTerm_print(t), | |
1961 | fileloc_unparse (constraintTerm_getFileloc(t) ) ) )); | |
1962 | break; | |
1963 | case INTLITERAL: | |
1964 | DPRINTF((message (" %q ", constraintTerm_print (t)) )); | |
1965 | break; | |
1966 | ||
1967 | case SREF: | |
1968 | / * evans 2001-07-24: constants should use the original term * / | |
1969 | if (!constraintTerm_canGetValue (t)) | |
1970 | { | |
1971 | sRef snew; | |
1972 | DPRINTF ((message("Doing sRef_fixInvarConstraint for %q ", | |
1973 | constraintTerm_print (t) ) )); | |
1974 | ||
1975 | snew = fixSref (ct, s, constraintTerm_getSRef(t)); | |
1976 | ||
1977 | ret = constraintExpr_makeTermsRef(snew); | |
1978 | ||
1979 | constraintExpr_free (e); | |
1980 | ||
1981 | DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ", | |
1982 | constraintExpr_print (ret) ) )); | |
1983 | / *@-branchstate@* / | |
1984 | } / *@=branchstate@* / | |
1985 | ||
1986 | break; | |
1987 | default: | |
1988 | BADEXIT; | |
1989 | } | |
1990 | ||
1991 | return ret; | |
1992 | ||
1993 | } | |
1994 | */ | |
1995 | ||
c3e695ff | 1996 | /*drl moved from constriantTerm.c 5/20/001*/ |
d46ce6a4 | 1997 | /*@only@*/ static constraintExpr |
4ab867d6 | 1998 | doSRefFixConstraintParamTerm (/*@only@*/ constraintExpr e, /*@observer@*/ /*@temp@*/ exprNodeList arglist) |
c3e695ff | 1999 | { |
2000 | constraintTerm t; | |
2001 | ||
749f175a | 2002 | constraintExprData data; |
c3e695ff | 2003 | |
749f175a | 2004 | constraintExprKind kind; |
c3e695ff | 2005 | |
2006 | constraintExpr ret; | |
2007 | ||
749f175a | 2008 | |
2009 | llassert(constraintExpr_isDefined (e) ); | |
2010 | ||
2011 | data = e->data; | |
2012 | ||
2013 | kind = e->kind; | |
2014 | ||
2015 | ||
2016 | ||
c3e695ff | 2017 | llassert(kind == term); |
2018 | ||
2019 | t = constraintExprData_termGetTerm (data); | |
28bf4b0b | 2020 | llassert (constraintTerm_isDefined(t) ); |
c3e695ff | 2021 | |
2022 | ret = e; | |
b9904f57 | 2023 | |
2024 | DPRINTF (("Fixing: %s", constraintExpr_print (e))); | |
2025 | ||
2026 | switch (constraintTerm_getKind(t)) | |
c3e695ff | 2027 | { |
2028 | case EXPRNODE: | |
bb25bea6 | 2029 | DPRINTF((message ("%q @ %q ", constraintTerm_print(t), |
2030 | fileloc_unparse (constraintTerm_getFileloc(t) ) ) )); | |
c3e695ff | 2031 | break; |
2032 | case INTLITERAL: | |
bb25bea6 | 2033 | DPRINTF((message (" %q ", constraintTerm_print (t)) )); |
d46ce6a4 | 2034 | break; |
c3e695ff | 2035 | |
2036 | case SREF: | |
b9904f57 | 2037 | /* evans 2001-07-24: constants should use the original term */ |
2038 | if (!constraintTerm_canGetValue (t)) | |
2039 | { | |
2040 | DPRINTF ((message("Doing sRef_fixConstraintParam for %q ", | |
2041 | constraintTerm_print (t) ) )); | |
2042 | ret = sRef_fixConstraintParam (constraintTerm_getSRef(t), arglist); | |
2043 | ||
2044 | constraintExpr_free (e); | |
2045 | ||
2046 | DPRINTF (( message("After Doing sRef_fixConstraintParam constraintExpr is %q ", | |
2047 | constraintExpr_print (ret) ) )); | |
2048 | /*@-branchstate@*/ | |
2049 | } /*@=branchstate@*/ | |
d46ce6a4 | 2050 | |
c3e695ff | 2051 | break; |
2052 | default: | |
2053 | BADEXIT; | |
2054 | } | |
b9904f57 | 2055 | |
c3e695ff | 2056 | return ret; |
2057 | ||
2058 | } | |
3aaedf88 | 2059 | |
2060 | ||
749f175a | 2061 | #if 0 |
2062 | bool constraintExpr_includesTerm (constraintExpr expr, constraintTerm term) | |
2063 | { | |
2064 | if (constraintTerm_hasTerm (expr->term, term) ) | |
2065 | return TRUE; | |
3aaedf88 | 2066 | |
749f175a | 2067 | if ((expr->expr) != NULL) |
2068 | { | |
2069 | return ( constraintExpr_includesTerm (expr->expr, term) ); | |
2070 | } | |
2071 | return FALSE; | |
3aaedf88 | 2072 | |
749f175a | 2073 | } |
2074 | #endif | |
3aaedf88 | 2075 | |
bb25bea6 | 2076 | /*drl added 6/11/01 */ |
2077 | bool constraintExpr_isBinaryExpr (/*@observer@*/ constraintExpr c) | |
2078 | { | |
749f175a | 2079 | |
2080 | llassert(constraintExpr_isDefined (c) ); | |
2081 | ||
2082 | if ( ! (constraintExpr_isDefined (c) ) ) | |
2083 | return FALSE; | |
2084 | ||
bb25bea6 | 2085 | if (c->kind == binaryexpr) |
2086 | return TRUE; | |
3aaedf88 | 2087 | |
bb25bea6 | 2088 | else |
2089 | return FALSE; | |
2090 | } | |
3aaedf88 | 2091 | |
a779b61e | 2092 | /*drl added 8/08/001 */ |
2093 | bool constraintExpr_isTerm (/*@observer@*/ constraintExpr c) /*@*/ | |
2094 | { | |
2095 | if (c->kind == term) | |
2096 | return TRUE; | |
2097 | ||
2098 | else | |
2099 | return FALSE; | |
2100 | } | |
2101 | ||
2102 | /*@observer@*/ /*@temp@*/ constraintTerm constraintExpr_getTerm ( /*@temp@*/ /*@observer@*/ constraintExpr c) /*@*/ | |
2103 | { | |
2104 | constraintTerm term; | |
2105 | ||
2106 | llassert(constraintExpr_isTerm(c) ); | |
2107 | ||
2108 | term = constraintExprData_termGetTerm(c->data); | |
2109 | ||
2110 | return term; | |
2111 | } | |
2112 | ||
920a3797 | 2113 | static void binaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f) |
2114 | { | |
2115 | constraintExpr expr1; | |
2116 | constraintExprBinaryOpKind binaryOp; | |
2117 | constraintExpr expr2; | |
2118 | ||
2119 | ||
2120 | binaryOp = constraintExprData_binaryExprGetOp (data); | |
2121 | ||
2122 | fprintf(f, "%d\n", (int) binaryOp); | |
2123 | ||
2124 | expr1 = constraintExprData_binaryExprGetExpr1 (data); | |
2125 | expr2 = constraintExprData_binaryExprGetExpr2 (data); | |
2126 | ||
2127 | fprintf(f, "e1\n"); | |
2128 | ||
2129 | constraintExpr_dump(expr1, f); | |
2130 | ||
2131 | fprintf(f, "e2\n"); | |
2132 | constraintExpr_dump(expr2, f); | |
2133 | } | |
2134 | ||
2135 | ||
2136 | static constraintExpr binaryExpr_undump (FILE *f) | |
2137 | { | |
2138 | constraintExpr expr1; | |
2139 | constraintExprBinaryOpKind binaryOp; | |
2140 | constraintExpr expr2; | |
2141 | ||
2142 | constraintExpr ret; | |
2143 | ||
2144 | ||
2145 | ||
2146 | char * str; | |
2147 | char * os; | |
2148 | ||
3be9a165 | 2149 | os = mstring_create (MAX_DUMP_LINE_LENGTH); |
2150 | ||
920a3797 | 2151 | str = fgets(os, MAX_DUMP_LINE_LENGTH, f); |
2152 | ||
2153 | ||
28bf4b0b | 2154 | binaryOp = (constraintExprBinaryOpKind) reader_getInt(&str); |
920a3797 | 2155 | |
2156 | str = fgets(os, MAX_DUMP_LINE_LENGTH, f); | |
2157 | ||
28bf4b0b | 2158 | reader_checkChar (&str, 'e'); |
2159 | reader_checkChar (&str, '1'); | |
920a3797 | 2160 | |
2161 | expr1 = constraintExpr_undump (f); | |
2162 | ||
2163 | str = fgets(os, MAX_DUMP_LINE_LENGTH, f); | |
2164 | ||
28bf4b0b | 2165 | reader_checkChar (&str, 'e'); |
2166 | reader_checkChar (&str, '2'); | |
920a3797 | 2167 | |
2168 | expr2 = constraintExpr_undump (f); | |
2169 | ||
2170 | ret = constraintExpr_makeBinaryOpConstraintExpr (expr1, expr2); | |
2171 | ret->data = constraintExprData_binaryExprSetOp(ret->data, binaryOp); | |
2172 | ||
2173 | free(os); | |
2174 | return ret; | |
2175 | } | |
2176 | ||
2177 | ||
2178 | ||
2179 | static void unaryExpr_dump (/*@observer@*/ constraintExprData data, FILE *f) | |
2180 | { | |
2181 | ||
2182 | constraintExpr expr; | |
2183 | constraintExprUnaryOpKind unaryOp; | |
2184 | ||
2185 | unaryOp = constraintExprData_unaryExprGetOp (data); | |
2186 | ||
2187 | fprintf(f, "%d\n", (int) unaryOp); | |
2188 | ||
2189 | expr = constraintExprData_unaryExprGetExpr (data); | |
2190 | ||
2191 | constraintExpr_dump(expr, f); | |
2192 | } | |
2193 | ||
2194 | static constraintExpr unaryExpr_undump ( FILE *f) | |
2195 | { | |
2196 | ||
2197 | constraintExpr expr; | |
2198 | constraintExprUnaryOpKind unaryOp; | |
2199 | constraintExpr ret; | |
2200 | ||
2201 | char * str; | |
2202 | char * os; | |
2203 | ||
2204 | str = mstring_create (MAX_DUMP_LINE_LENGTH); | |
2205 | os = str; | |
2206 | str = fgets(os, MAX_DUMP_LINE_LENGTH, f); | |
2207 | ||
28bf4b0b | 2208 | unaryOp = (constraintExprUnaryOpKind) reader_getInt(&str); |
920a3797 | 2209 | |
2210 | expr = constraintExpr_undump (f); | |
2211 | ||
2212 | ret = constraintExpr_makeUnaryOp (expr, unaryOp); | |
2213 | ||
2214 | free(os); | |
2215 | ||
2216 | return ret; | |
2217 | } | |
2218 | ||
2219 | void constraintExpr_dump (/*@observer@*/ constraintExpr expr, FILE *f) | |
2220 | { | |
2221 | constraintExprKind kind; | |
2222 | constraintTerm t; | |
2223 | ||
0f9b7373 | 2224 | |
2225 | DPRINTF((message("constraintExpr_dump:: dumping constraintExpr %s", | |
2226 | constraintExpr_unparse(expr) | |
2227 | ) )); | |
920a3797 | 2228 | |
2229 | kind = expr->kind; | |
2230 | ||
2231 | fprintf(f,"%d\n", (int) kind); | |
2232 | ||
2233 | switch (kind) | |
2234 | { | |
2235 | case term: | |
2236 | t = constraintExprData_termGetTerm (expr->data); | |
2237 | constraintTerm_dump (t, f); | |
2238 | break; | |
2239 | case unaryExpr: | |
2240 | unaryExpr_dump (expr->data, f); | |
2241 | break; | |
2242 | case binaryexpr: | |
2243 | binaryExpr_dump (expr->data, f); | |
2244 | break; | |
2245 | } | |
2246 | } | |
2247 | ||
2248 | /*@only@*/ constraintExpr constraintExpr_undump (FILE *f) | |
2249 | { | |
2250 | constraintExprKind kind; | |
2251 | constraintTerm t; | |
2252 | constraintExpr ret; | |
2253 | ||
2254 | char * s; | |
2255 | char * os; | |
2256 | ||
2257 | s = mstring_create (MAX_DUMP_LINE_LENGTH); | |
2258 | ||
2259 | os = s; | |
2260 | ||
2261 | s = fgets(os, MAX_DUMP_LINE_LENGTH, f); | |
2262 | ||
28bf4b0b | 2263 | kind = (constraintExprKind) reader_getInt(&s); |
920a3797 | 2264 | |
2265 | free (os); | |
2266 | ||
2267 | switch (kind) | |
2268 | { | |
2269 | case term: | |
2270 | t = constraintTerm_undump (f); | |
2271 | ret = constraintExpr_makeTerm(t); | |
2272 | break; | |
2273 | case unaryExpr: | |
2274 | ret = unaryExpr_undump (f); | |
2275 | break; | |
2276 | case binaryexpr: | |
2277 | ret = binaryExpr_undump (f); | |
2278 | break; | |
2279 | } | |
2280 | ||
2281 | return ret; | |
2282 | ||
2283 | } | |
a779b61e | 2284 | |
2285 | int constraintExpr_getDepth (constraintExpr ex) | |
2286 | { | |
2287 | int ret; | |
2288 | ||
2289 | constraintExprKind kind; | |
2290 | ||
2291 | llassert (ex != NULL); | |
2292 | ||
2293 | kind = ex->kind; | |
2294 | ||
2295 | switch (kind) | |
2296 | { | |
2297 | case term: | |
2298 | ret = 1; | |
2299 | break; | |
2300 | case unaryExpr: | |
2301 | ret = constraintExpr_getDepth (constraintExprData_unaryExprGetExpr (ex->data) ); | |
2302 | ret++; | |
2303 | ||
2304 | break; | |
2305 | case binaryexpr: | |
2306 | ret = 0; | |
2307 | ret = constraintExpr_getDepth (constraintExprData_binaryExprGetExpr1 (ex->data) ); | |
2308 | ||
2309 | ret++; | |
2310 | ||
2311 | ret += constraintExpr_getDepth (constraintExprData_binaryExprGetExpr2 (ex->data) ); | |
2312 | ||
2313 | break; | |
2314 | default: | |
2315 | BADEXIT; | |
2316 | } | |
2317 | ||
2318 | return ret; | |
2319 | } | |
2320 | ||
2321 | ||
86d93ed3 | 2322 | bool constraintExpr_canGetCType (constraintExpr e) /*@*/ |
2323 | { | |
2324 | if (e->kind == term) | |
2325 | { | |
2326 | return TRUE; | |
2327 | } | |
2328 | else | |
2329 | { | |
2330 | DPRINTF(( message("constraintExpr_canGetCType: can't get type for %s ", | |
2331 | constraintExpr_print(e) ) )); | |
2332 | return FALSE; | |
2333 | } | |
2334 | } | |
2335 | ||
2336 | ctype constraintExpr_getCType (constraintExpr e) /*@*/ | |
2337 | { | |
2338 | constraintTerm t; | |
2339 | ||
2340 | llassert(constraintExpr_canGetCType(e) ); | |
2341 | ||
2342 | switch (e->kind) | |
2343 | { | |
2344 | case term: | |
2345 | t = constraintExprData_termGetTerm (e->data); | |
2346 | return (constraintTerm_getCType(t) ); | |
2347 | /* assume that a unary expression will be an int ... */ | |
2348 | case unaryExpr: | |
2349 | return ctype_signedintegral; | |
2350 | ||
2351 | /* drl for just return type of first operand */ | |
2352 | case binaryexpr: | |
2353 | return ( | |
2354 | constraintExpr_getCType | |
2355 | (constraintExprData_binaryExprGetExpr1 (e->data) ) | |
2356 | ); | |
2357 | default: | |
2358 | BADEXIT; | |
2359 | } | |
2360 | BADEXIT; | |
2361 | } | |
2362 | ||
2363 | /* drl add 10-5-001 */ | |
2364 | ||
2365 | static bool constraintExpr_hasTypeChange(constraintExpr e) | |
2366 | { | |
2367 | if (constraintExpr_isDefined((e)) && (e->ct == TRUE) ) | |
2368 | { | |
2369 | return TRUE; | |
2370 | } | |
2371 | ||
2372 | if (e->kind == unaryExpr) | |
2373 | { | |
2374 | if (constraintExprData_unaryExprGetOp (e->data) == MAXSET) | |
2375 | { | |
2376 | constraintExpr ce; | |
2377 | ||
2378 | ce = constraintExprData_unaryExprGetExpr(e->data); | |
2379 | ||
2380 | return (constraintExpr_hasTypeChange(ce) ); | |
2381 | } | |
2382 | ||
2383 | } | |
2384 | return FALSE; | |
2385 | } | |
2386 | ||
2387 | /* drl add 10-5-001 */ | |
2388 | ||
2389 | static ctype constraintExpr_getOrigType (constraintExpr e) | |
2390 | { | |
2391 | ||
2392 | llassert(constraintExpr_hasTypeChange(e) ); | |
2393 | ||
2394 | ||
2395 | if (e->ct == TRUE) | |
2396 | { | |
2397 | return e->origType; | |
2398 | } | |
2399 | ||
2400 | if (e->kind == unaryExpr) | |
2401 | { | |
2402 | if (constraintExprData_unaryExprGetOp (e->data) == MAXSET) | |
2403 | { | |
2404 | constraintExpr ce; | |
2405 | ||
2406 | ce = constraintExprData_unaryExprGetExpr(e->data); | |
2407 | ||
2408 | return (constraintExpr_getOrigType(ce) ); | |
2409 | } | |
2410 | ||
2411 | } | |
2412 | ||
2413 | BADEXIT; | |
2414 | } | |
2415 | ||
2416 | /*drl added these around 10/18/001*/ | |
2417 | ||
2418 | static /*@only@*/ constraintExpr constraintExpr_div (/*@only@*/ constraintExpr e, /*@unused@*/ ctype ct) | |
2419 | { | |
2420 | return e; | |
2421 | } | |
2422 | ||
2423 | static /*@only@*/ constraintExpr constraintTerm_simpleDivTypeExprNode(/*@only@*/ constraintExpr e, ctype ct) | |
2424 | { | |
2425 | exprData data; | |
2426 | exprNode t1, t2, expr; | |
2427 | lltok tok; | |
2428 | constraintTerm t; | |
2429 | ||
2430 | DPRINTF(( | |
2431 | message("constraintTerm_simpleDivTypeExprNode e=%s, ct=%s", | |
2432 | constraintExpr_print(e), ctype_unparse(ct) | |
2433 | ) | |
2434 | )); | |
2435 | ||
2436 | t = constraintExprData_termGetTerm(e->data); | |
2437 | ||
2438 | expr = constraintTerm_getExprNode(t); | |
2439 | ||
2440 | if (expr->kind == XPR_OP) | |
2441 | { | |
2442 | data = expr->edata; | |
2443 | ||
2444 | t1 = exprData_getOpA (data); | |
2445 | t2 = exprData_getOpB (data); | |
2446 | tok = exprData_getOpTok (data); | |
2447 | if (lltok_isMult(tok) ) | |
2448 | { | |
2449 | ||
2450 | if ((t1->kind == XPR_SIZEOF) || (t1->kind == XPR_SIZEOFT) ) | |
2451 | { | |
2452 | ctype ct2; | |
2453 | ||
2454 | if (t1->kind == XPR_SIZEOFT) | |
2455 | { | |
2456 | ct2 = qtype_getType (exprData_getType (t1->edata)); | |
2457 | } | |
2458 | else | |
2459 | { | |
0fe21ba7 | 2460 | exprNode tempE; |
2461 | ||
2462 | tempE = exprData_getSingle (t1->edata); | |
2463 | ||
2464 | ct2 = exprNode_getType (tempE); | |
86d93ed3 | 2465 | } |
2466 | if (ctype_match (ctype_makePointer(ct2), ct) ) | |
2467 | { | |
2468 | /* this is a bit sloopy but ... */ | |
2469 | constraintExpr_free(e); | |
2470 | return constraintExpr_makeExprNode(t2); | |
2471 | } | |
2472 | } | |
2473 | ||
2474 | ||
2475 | else if ((t2->kind == XPR_SIZEOF) || (t2->kind == XPR_SIZEOFT) ) | |
2476 | { | |
2477 | ctype ct2; | |
2478 | ||
2479 | if (t2->kind == XPR_SIZEOFT) | |
2480 | { | |
2481 | ct2 = qtype_getType (exprData_getType (t2->edata)); | |
2482 | } | |
2483 | else | |
2484 | { | |
2485 | ct2 = qtype_getType (exprData_getType(exprData_getSingle (t2->edata)->edata ) ); | |
2486 | } | |
2487 | if (ctype_match (ctype_makePointer(ct2),ct) ) | |
2488 | { | |
2489 | /* sloopy way to do this... */ /*@i22*/ | |
2490 | constraintExpr_free(e); | |
2491 | return constraintExpr_makeExprNode(t1); | |
2492 | } | |
2493 | } | |
2494 | else | |
2495 | { | |
2496 | /*empty*/ | |
2497 | } | |
2498 | ||
2499 | } | |
2500 | } | |
2501 | return (constraintExpr_div (e, ct) ); | |
2502 | } | |
2503 | ||
2504 | static /*@only@*/ constraintExpr simpleDivType (/*@only@*/ constraintExpr e, ctype ct) | |
2505 | { | |
2506 | /*@i333*/ | |
2507 | DPRINTF(( (message("simpleDiv got %s ", constraintExpr_unparse(e) ) ) | |
2508 | )); | |
2509 | ||
2510 | switch (e->kind) | |
2511 | { | |
2512 | case term: | |
2513 | ||
2514 | { | |
2515 | constraintTerm t; | |
2516 | ||
2517 | t = constraintExprData_termGetTerm(e->data); | |
2518 | ||
2519 | ||
2520 | if (constraintTerm_isExprNode (t) ) | |
2521 | { | |
2522 | return constraintTerm_simpleDivTypeExprNode(e, ct); | |
2523 | ||
2524 | /* search for * size of ct and remove */ | |
2525 | } | |
2526 | return constraintExpr_div (e, ct); | |
2527 | } | |
2528 | ||
2529 | case binaryexpr: | |
2530 | { | |
2531 | constraintExpr temp; | |
2532 | ||
2533 | temp = constraintExprData_binaryExprGetExpr1 (e->data); | |
2534 | temp = constraintExpr_copy(temp); | |
2535 | temp = simpleDivType (temp, ct); | |
2536 | ||
2537 | e->data = constraintExprData_binaryExprSetExpr1 (e->data, temp); | |
2538 | ||
2539 | temp = constraintExprData_binaryExprGetExpr2 (e->data); | |
2540 | temp = constraintExpr_copy(temp); | |
2541 | temp = simpleDivType (temp, ct); | |
2542 | e->data = constraintExprData_binaryExprSetExpr2 (e->data, temp); | |
2543 | ||
2544 | DPRINTF(( (message("simpleDiv binaryexpr returning %s ", constraintExpr_unparse(e) ) ) | |
2545 | )); | |
2546 | ||
2547 | return e; | |
2548 | } | |
2549 | case unaryExpr: | |
2550 | return constraintExpr_div (e, ct); | |
2551 | ||
2552 | default: | |
2553 | BADEXIT; | |
2554 | } | |
2555 | } | |
2556 | ||
2557 | static /*@only@*/ constraintExpr constraintExpr_adjustMaxSetForCast(/*@only@*/ constraintExpr e, ctype ct) | |
2558 | { | |
2559 | ||
2560 | DPRINTF(( (message("constraintExpr_adjustMaxSetForCast got %s ", constraintExpr_unparse(e) ) ) | |
2561 | )); | |
2562 | ||
2563 | e = constraintExpr_makeIncConstraintExpr(e); | |
2564 | ||
2565 | e = constraintExpr_simplify(e); | |
2566 | ||
2567 | ||
2568 | e = simpleDivType (e, ct); | |
2569 | ||
2570 | e = constraintExpr_makeDecConstraintExpr(e); | |
2571 | ||
2572 | e = constraintExpr_simplify(e); | |
2573 | ||
2574 | DPRINTF(( (message("constraintExpr_adjustMaxSetForCast returning %s ", constraintExpr_unparse(e) ) ) | |
2575 | )); | |
2576 | ||
2577 | return e; | |
2578 | } | |
2579 | ||
fba0ed37 | 2580 | |
2581 | bool constraintExpr_isConstantOnly ( constraintExpr e ) | |
2582 | { | |
2583 | DPRINTF(( (message("constraintExpr_isConstantOnly %s ", | |
2584 | constraintExpr_unparse(e) ) ) | |
2585 | )); | |
2586 | ||
2587 | switch (e->kind) | |
2588 | { | |
2589 | case term: | |
2590 | { | |
2591 | constraintTerm t; | |
2592 | ||
2593 | t = constraintExprData_termGetTerm(e->data); | |
2594 | ||
2595 | ||
2596 | if (constraintTerm_isConstantOnly (t) ) | |
2597 | { | |
2598 | return TRUE; | |
2599 | } | |
2600 | else | |
2601 | { | |
2602 | return FALSE; | |
2603 | } | |
2604 | } | |
2605 | ||
2606 | case binaryexpr: | |
2607 | { | |
2608 | constraintExpr temp1, temp2; | |
2609 | ||
2610 | temp1 = constraintExprData_binaryExprGetExpr1 (e->data); | |
2611 | ||
2612 | temp2 = constraintExprData_binaryExprGetExpr2 (e->data); | |
2613 | ||
2614 | if (constraintExpr_isConstantOnly(temp1) && | |
2615 | constraintExpr_isConstantOnly(temp2) ) | |
2616 | { | |
2617 | return TRUE; | |
2618 | } | |
2619 | else | |
2620 | { | |
2621 | return FALSE; | |
2622 | } | |
2623 | } | |
2624 | ||
2625 | case unaryExpr: | |
2626 | { | |
2627 | constraintExpr temp; | |
2628 | ||
2629 | temp = constraintExprData_unaryExprGetExpr (e->data ); | |
2630 | ||
2631 | if (constraintExpr_isConstantOnly(temp) ) | |
2632 | { | |
2633 | return TRUE; | |
2634 | } | |
2635 | else | |
2636 | { | |
2637 | return FALSE; | |
2638 | } | |
2639 | } | |
2640 | default: | |
2641 | BADEXIT; | |
2642 | } | |
2643 | } | |
2644 |