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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
77d37419 | 3 | ** Copyright (C) 1994-2002 University of Virginia, |
616915dd | 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 |
616915dd | 23 | */ |
24 | /* | |
25 | ** cprim.c | |
26 | */ | |
27 | ||
1b8ae690 | 28 | # include "splintMacros.nf" |
616915dd | 29 | # include "basic.h" |
30 | ||
31 | static bool cprim_isReal (cprim c) | |
32 | { | |
33 | return (cprim_isAnyReal (c)); | |
34 | } | |
35 | ||
36 | static bool cprim_isNumeric (cprim c) | |
37 | { | |
38 | return (cprim_isReal (c) || cprim_isInt (c)); | |
39 | } | |
40 | ||
41 | cprim | |
42 | cprim_fromInt (int i) | |
43 | { | |
44 | if (i < CTX_UNKNOWN || i > CTX_LAST) | |
45 | { | |
46 | llcontbug (message ("cprim_fromInt: out of range: %d", i)); | |
47 | return CTX_UNKNOWN; | |
48 | } | |
49 | return (cprim) i; | |
50 | } | |
51 | ||
52 | ||
53 | /* | |
54 | ** not symmetric: c1 := c2 or c2 is passed as c1 | |
55 | ** (if RELAXQUALS, c1 must be "bigger" than c2) | |
56 | */ | |
57 | ||
58 | static bool cprim_closeEnoughAux (cprim p_c1, cprim p_c2, bool p_deep); | |
59 | ||
60 | bool | |
61 | cprim_closeEnoughDeep (cprim c1, cprim c2) | |
62 | { | |
63 | /* | |
64 | ** If * c2 is passed as * c1 | |
65 | ** Comparison is slightly different since it is safe to pass int as long, | |
66 | ** but not to pass int * as long *! | |
67 | ** | |
68 | ** For deep comparisons, +relaxquals does not permit the long/int break. | |
69 | */ | |
70 | ||
71 | return cprim_closeEnoughAux (c1, c2, TRUE); | |
72 | } | |
73 | ||
74 | bool | |
75 | cprim_closeEnough (cprim c1, cprim c2) | |
76 | { | |
77 | return cprim_closeEnoughAux (c1, c2, FALSE); | |
78 | } | |
79 | ||
80 | static bool | |
81 | cprim_closeEnoughAux (cprim c1, cprim c2, bool deep) | |
82 | { | |
83 | if (c1 == c2) return TRUE; | |
84 | ||
85 | if (c1 == CTX_ANYINTEGRAL) | |
86 | { | |
87 | if (context_getFlag (FLG_MATCHANYINTEGRAL) | |
88 | || context_getFlag (FLG_IGNOREQUALS)) | |
89 | { | |
90 | return (cprim_isAnyInt (c2) | |
91 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
92 | } | |
93 | else if (context_getFlag (FLG_LONGINTEGRAL)) | |
94 | { | |
95 | return (cprim_closeEnough (CTX_LINT, c2)); | |
96 | } | |
97 | else if (context_getFlag (FLG_LONGUNSIGNEDINTEGRAL)) | |
98 | { | |
99 | return (cprim_closeEnough (CTX_ULINT, c2)); | |
100 | } | |
101 | else | |
102 | { | |
103 | return FALSE; | |
104 | } | |
105 | } | |
106 | ||
107 | if (c1 == CTX_UNSIGNEDINTEGRAL) | |
108 | { | |
109 | if (context_getFlag (FLG_MATCHANYINTEGRAL) | |
110 | || context_getFlag (FLG_IGNOREQUALS)) | |
111 | { | |
112 | return (cprim_isAnyInt (c2) | |
113 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
114 | } | |
115 | else if (context_getFlag (FLG_LONGUNSIGNEDUNSIGNEDINTEGRAL)) | |
116 | { | |
117 | return (cprim_closeEnough (CTX_ULINT, c2)); | |
118 | } | |
119 | else | |
120 | { | |
121 | return FALSE; | |
122 | } | |
123 | } | |
124 | ||
125 | if (c1 == CTX_SIGNEDINTEGRAL) | |
126 | { | |
127 | if (context_getFlag (FLG_MATCHANYINTEGRAL) | |
128 | || context_getFlag (FLG_IGNOREQUALS)) | |
129 | { | |
130 | return (cprim_isAnyInt (c2) | |
131 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
132 | } | |
133 | else if (context_getFlag (FLG_LONGSIGNEDINTEGRAL)) | |
134 | { | |
135 | return (cprim_closeEnough (CTX_LINT, c2)); | |
136 | } | |
137 | else | |
138 | { | |
139 | return FALSE; | |
140 | } | |
141 | } | |
142 | ||
143 | if (c2 == CTX_ANYINTEGRAL) | |
144 | { | |
145 | if (context_getFlag (FLG_MATCHANYINTEGRAL)) | |
146 | { | |
147 | return (cprim_isAnyInt (c1) | |
148 | || (cprim_isAnyChar (c1) && context_msgCharInt ())); | |
149 | } | |
150 | else if (context_getFlag (FLG_LONGINTEGRAL)) | |
151 | { | |
152 | return (cprim_closeEnough (c1, CTX_LINT)); | |
153 | } | |
154 | else if (context_getFlag (FLG_LONGUNSIGNEDINTEGRAL)) | |
155 | { | |
156 | return (cprim_closeEnough (c1, CTX_ULINT)); | |
157 | } | |
158 | else | |
159 | { | |
160 | return FALSE; | |
161 | } | |
162 | } | |
163 | ||
164 | if (c2 == CTX_UNSIGNEDINTEGRAL) | |
165 | { | |
166 | if (context_getFlag (FLG_MATCHANYINTEGRAL)) | |
167 | { | |
168 | return (cprim_isAnyInt (c1) | |
169 | || (cprim_isAnyChar (c1) && context_msgCharInt ())); | |
170 | } | |
171 | else if (context_getFlag (FLG_LONGUNSIGNEDUNSIGNEDINTEGRAL)) | |
172 | { | |
173 | return (cprim_closeEnough (c1, CTX_ULINT)); | |
174 | } | |
175 | else | |
176 | { | |
177 | return FALSE; | |
178 | } | |
179 | } | |
180 | ||
181 | if (c2 == CTX_SIGNEDINTEGRAL) | |
182 | { | |
183 | if (context_getFlag (FLG_MATCHANYINTEGRAL)) | |
184 | { | |
185 | return (cprim_isAnyInt (c2) | |
186 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
187 | } | |
188 | else if (context_getFlag (FLG_LONGSIGNEDINTEGRAL)) | |
189 | { | |
190 | return (cprim_closeEnough (c1, CTX_LINT)); | |
191 | } | |
192 | else | |
193 | { | |
194 | return FALSE; | |
195 | } | |
196 | } | |
197 | ||
198 | if (context_getFlag (FLG_RELAXTYPES)) | |
199 | { | |
200 | if (cprim_isNumeric (c1) && cprim_isNumeric (c2)) return TRUE; | |
201 | } | |
202 | ||
203 | if (context_getFlag (FLG_IGNOREQUALS)) | |
204 | { | |
205 | switch (c1) | |
206 | { | |
207 | case CTX_CHAR: | |
208 | case CTX_UCHAR: | |
209 | return (cprim_isAnyChar (c2) | |
210 | || (cprim_isAnyInt (c2) && (context_msgCharInt ()))); | |
211 | case CTX_DOUBLE: | |
212 | case CTX_FLOAT: | |
213 | case CTX_LDOUBLE: | |
214 | return (c2 == CTX_DOUBLE || c2 == CTX_FLOAT || c2 == CTX_LDOUBLE); | |
215 | case CTX_INT: | |
216 | case CTX_LINT: | |
217 | case CTX_LLINT: | |
218 | case CTX_ULLINT: | |
219 | case CTX_SINT: | |
220 | case CTX_UINT: | |
221 | case CTX_ULINT: | |
222 | case CTX_USINT: | |
223 | return (cprim_isAnyInt (c2) | |
224 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
225 | default: | |
226 | return FALSE; | |
227 | } | |
228 | } | |
229 | else | |
230 | { | |
231 | if (context_getFlag (FLG_IGNORESIGNS)) | |
232 | { | |
233 | if (c1 == CTX_UCHAR) | |
234 | { | |
235 | c1 = CTX_CHAR; | |
236 | } | |
237 | else if (c1 == CTX_UINT) | |
238 | { | |
239 | c1 = CTX_INT; | |
240 | } | |
241 | else if (c1 == CTX_ULINT) | |
242 | { | |
243 | c1 = CTX_LINT; | |
244 | } | |
28bf4b0b | 245 | /* 2001-06-10: This fix provided by Jim Zelenka: */ |
246 | else if (c1 == CTX_ULLINT) | |
247 | { | |
248 | c1 = CTX_LLINT; | |
249 | } | |
250 | /* End fix */ | |
616915dd | 251 | else if (c1 == CTX_USINT) |
252 | { | |
253 | c1 = CTX_SINT; | |
254 | } | |
255 | else | |
256 | { | |
257 | ; | |
258 | } | |
259 | ||
260 | if (c2 == CTX_UCHAR) | |
261 | { | |
262 | c2 = CTX_CHAR; | |
263 | } | |
264 | else if (c2 == CTX_UINT) | |
265 | { | |
266 | c2 = CTX_INT; | |
267 | } | |
268 | else if (c2 == CTX_ULINT) | |
269 | { | |
270 | c2 = CTX_LINT; | |
271 | } | |
28bf4b0b | 272 | /* 2001-06-10: This fix provided by Jim Zelenka: */ |
273 | else if (c2 == CTX_ULLINT) | |
274 | { | |
275 | c2 = CTX_LLINT; | |
276 | } | |
277 | /* End fix */ | |
616915dd | 278 | else if (c2 == CTX_USINT) |
279 | { | |
280 | c2 = CTX_SINT; | |
281 | } | |
282 | else | |
283 | { | |
284 | ; | |
285 | } | |
286 | } | |
287 | ||
288 | if (c1 == c2) return TRUE; | |
289 | ||
290 | if (context_getFlag (FLG_FLOATDOUBLE)) | |
291 | { | |
292 | if (c1 == CTX_FLOAT && c2 == CTX_DOUBLE) | |
293 | { | |
294 | return TRUE; | |
295 | } | |
296 | if (c2 == CTX_FLOAT && c1 == CTX_DOUBLE) | |
297 | { | |
298 | return TRUE; | |
299 | } | |
300 | } | |
301 | ||
302 | if (!deep && context_getFlag (FLG_RELAXQUALS)) | |
303 | { | |
304 | switch (c1) | |
305 | { | |
306 | case CTX_DOUBLE: | |
307 | return (c2 == CTX_FLOAT); | |
308 | case CTX_LDOUBLE: | |
309 | return (c2 == CTX_DOUBLE || c2 == CTX_FLOAT); | |
310 | case CTX_SINT: | |
311 | return (c2 == CTX_CHAR && context_msgCharInt ()); | |
312 | case CTX_INT: | |
313 | return (c2 == CTX_SINT | |
314 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
315 | case CTX_LLINT: | |
316 | return (c2 == CTX_SINT | |
317 | || c2 == CTX_INT | |
318 | || c2 == CTX_LINT | |
319 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
320 | case CTX_ULLINT: | |
321 | return (c2 == CTX_USINT | |
322 | || c2 == CTX_UINT | |
28bf4b0b | 323 | || c2 == CTX_ULINT |
324 | /* 2001-06-10: This fix provided by Jim Zelenka: */ | |
325 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
616915dd | 326 | case CTX_LINT: |
327 | return (c2 == CTX_SINT | |
328 | || c2 == CTX_INT | |
329 | || (cprim_isAnyChar (c2) && context_msgCharInt ())); | |
330 | case CTX_UINT: | |
331 | return (c2 == CTX_USINT | |
332 | || (c2 == CTX_UCHAR && context_msgCharInt ())); | |
333 | case CTX_USINT: | |
334 | return (c2 == CTX_UCHAR && context_msgCharInt ()); | |
335 | case CTX_ULINT: | |
28bf4b0b | 336 | /* 2001-06-10: This fix provided by Jim Zelenka: */ |
337 | return (c2 == CTX_UINT || c2 == CTX_USINT | |
338 | || (c2 == CTX_UCHAR && context_msgCharInt())); | |
616915dd | 339 | case CTX_UCHAR: |
340 | return (c2 == CTX_UINT && context_msgCharInt ()); | |
341 | case CTX_CHAR: | |
342 | return ((c2 == CTX_INT || c2 == CTX_SINT) | |
343 | && context_msgCharInt ()); | |
344 | default: | |
345 | return FALSE; | |
346 | } | |
347 | } | |
348 | else | |
349 | { | |
350 | switch (c1) | |
351 | { | |
352 | case CTX_DOUBLE: | |
353 | case CTX_LDOUBLE: | |
354 | return FALSE; | |
355 | case CTX_SINT: | |
356 | case CTX_INT: | |
357 | case CTX_LINT: | |
358 | case CTX_LLINT: | |
359 | return (c2 == CTX_CHAR && context_msgCharInt ()); | |
360 | case CTX_UINT: | |
361 | case CTX_USINT: | |
362 | case CTX_ULINT: | |
363 | case CTX_ULLINT: | |
364 | return (c2 == CTX_UCHAR && context_msgCharInt ()); | |
365 | case CTX_UCHAR: | |
366 | return (c2 == CTX_UINT && context_msgCharInt ()); | |
367 | case CTX_CHAR: | |
368 | return ((c2 == CTX_INT || c2 == CTX_SINT) | |
369 | && context_msgCharInt ()); | |
370 | default: | |
371 | return FALSE; | |
372 | } | |
373 | } | |
374 | } | |
375 | } | |
376 | ||
377 | /*@only@*/ cstring | |
378 | cprim_unparse (cprim c) | |
379 | { | |
380 | switch (c) | |
381 | { | |
382 | case CTX_UNKNOWN: | |
383 | return cstring_makeLiteral ("-"); | |
384 | case CTX_VOID: | |
385 | return cstring_makeLiteral ("void"); | |
386 | case CTX_CHAR: | |
387 | return cstring_makeLiteral ("char"); | |
388 | case CTX_UCHAR: | |
389 | return cstring_makeLiteral ("unsigned char"); | |
390 | case CTX_DOUBLE: | |
391 | return cstring_makeLiteral ("double"); | |
392 | case CTX_LDOUBLE: | |
393 | return cstring_makeLiteral ("long double"); | |
394 | case CTX_FLOAT: | |
395 | return cstring_makeLiteral ("float"); | |
396 | case CTX_INT: | |
397 | return cstring_makeLiteral ("int"); | |
398 | case CTX_LINT: | |
399 | return cstring_makeLiteral ("long int"); | |
400 | case CTX_LLINT: | |
401 | return cstring_makeLiteral ("long long"); | |
402 | case CTX_ULLINT: | |
403 | return cstring_makeLiteral ("unsigned long long"); | |
404 | case CTX_SINT: | |
405 | return cstring_makeLiteral ("short int"); | |
406 | case CTX_UINT: | |
407 | return cstring_makeLiteral ("unsigned int"); | |
408 | case CTX_ULINT: | |
409 | return cstring_makeLiteral ("unsigned long int"); | |
410 | case CTX_USINT: | |
411 | return cstring_makeLiteral ("unsigned short int"); | |
412 | case CTX_UNSIGNEDINTEGRAL: | |
413 | return cstring_makeLiteral ("arbitrary unsigned integral type"); | |
414 | case CTX_SIGNEDINTEGRAL: | |
415 | return cstring_makeLiteral ("arbitrary signed integral type"); | |
416 | case CTX_ANYINTEGRAL: | |
417 | return cstring_makeLiteral ("arbitrary integral type"); | |
418 | default: | |
419 | return cstring_makeLiteral ("unknown prim"); | |
420 | } | |
421 | } | |
422 | ||
423 | bool cprim_isInt (cprim c) | |
424 | { | |
425 | return (cprim_isAnyInt (c) | |
426 | || (cprim_isAnyChar (c) && context_msgCharInt ())); | |
427 | } | |
428 | ||
429 | ||
430 | ||
431 |