Commit | Line | Data |
---|---|---|
bc97a989 | 1 | #include <malloc.h> |
f2927108 | 2 | #include <math.h> |
87621fe1 | 3 | #include <stdio.h> |
bc97a989 | 4 | #include <stdlib.h> |
b9c1c40d | 5 | #include <string.h> |
bc97a989 LM |
6 | |
7 | #include "debug.h" | |
bc97a989 LM |
8 | |
9 | #include "parser.h" | |
10 | ||
5075f6ea LM |
11 | /* global variables */ |
12 | ||
13 | double answer = 0; | |
14 | ||
6ba1dd0f LM |
15 | #define STORAGE_SIZE 10 |
16 | double storage[STORAGE_SIZE] = {0}; | |
17 | ||
715580ff LM |
18 | char format[9] = "=> %..g\n"; |
19 | ||
bc97a989 LM |
20 | /* compare codes */ |
21 | ||
22 | int codecmp (char *ref, char *str) | |
23 | { | |
24 | int sig; | |
25 | ||
26 | while (*ref != '\0') { | |
0b9cc9b0 LM |
27 | if (*ref == '\t') { |
28 | sig = (*str == '.') ? -1 : ((*str >= '0') && (*str <= '9')); | |
29 | } else { | |
30 | sig = *str - *ref; | |
31 | } | |
bc97a989 LM |
32 | if (sig != 0) { |
33 | return (sig > 0) ? 1 : -1; | |
34 | } | |
0b9cc9b0 LM |
35 | str++; |
36 | ref++; | |
bc97a989 LM |
37 | } |
38 | ||
39 | return 0; | |
40 | } | |
41 | ||
42 | /* allocate new element */ | |
43 | ||
11cda8d7 | 44 | element_t *newelement (func_t function, int nbops, int prio) |
bc97a989 LM |
45 | { |
46 | element_t *new = (element_t *) calloc (1, sizeof (element_t)); | |
47 | if (new == NULL) { | |
04d68907 | 48 | VERBOSE (ERROR, fprintf (stderr, "can't allocate memory\n")); |
d32ea0b0 | 49 | exit (1); |
bc97a989 | 50 | } |
62d56da6 LM |
51 | if (nbops) { |
52 | new->ops = (element_t **) calloc (nbops, sizeof (element_t *)); | |
53 | if (new->ops == NULL) { | |
62d56da6 | 54 | VERBOSE (ERROR, fprintf (stderr, "can't allocate memory\n")); |
d32ea0b0 | 55 | exit (1); |
62d56da6 | 56 | } |
0c95a3d3 | 57 | } |
bc97a989 LM |
58 | new->func = function; |
59 | new->nbops = nbops; | |
11cda8d7 | 60 | new->prio = prio; |
bc97a989 LM |
61 | |
62 | return new; | |
63 | } | |
64 | ||
031d7bba LM |
65 | /* desallocate element */ |
66 | ||
67 | void delelement (element_t *root) | |
68 | { | |
031d7bba | 69 | if ((root != NULL) && (root != ERROR_OP)) { |
0c95a3d3 | 70 | int i; |
031d7bba LM |
71 | for (i = 0; i < root->nbops; i++) { |
72 | if ((root->ops[i] != NULL) && (root->ops[i] != ERROR_OP)) { | |
73 | delelement (root->ops[i]); | |
74 | } | |
75 | } | |
0c95a3d3 LM |
76 | if (root->nbops) { |
77 | free (root->ops); | |
78 | } | |
031d7bba LM |
79 | free (root); |
80 | } | |
81 | } | |
82 | ||
2a688642 LM |
83 | /* duplicate element */ |
84 | ||
85 | element_t *dupelement (element_t *root) | |
86 | { | |
87 | element_t *tmp = NULL; | |
88 | int i; | |
89 | ||
90 | if ((root == NULL) || (root == ERROR_OP)) { | |
91 | return root; | |
92 | } | |
93 | tmp = newelement (root->func, root->nbops, root->prio); | |
2a688642 LM |
94 | tmp->value = root->value; |
95 | for (i = 0; i < root->nbops; i++) { | |
96 | tmp->ops[i] = dupelement (root->ops[i]); | |
2a688642 LM |
97 | } |
98 | return tmp; | |
99 | } | |
100 | ||
bc97a989 LM |
101 | /* functions */ |
102 | ||
ca3e2a2f | 103 | #define NB_OPERATORS 14 |
bc97a989 | 104 | keyword_t operators[NB_OPERATORS] = { |
11cda8d7 LM |
105 | { "+\t", Add, 2, 1, 1}, |
106 | { "-\t", Sub, 2, 1, 1}, | |
107 | { "*", Mul, 2, 1, 2}, | |
108 | { "/", Div, 2, 1, 2}, | |
c47a9298 | 109 | { "%", Mod, 2, 1, 3}, |
7fe742c9 | 110 | { "^", Pow, 2, 1, 4}, |
ca3e2a2f LM |
111 | { "==", Equal, 2, 2, -1}, |
112 | { "!=", Diff, 2, 2, -1}, | |
113 | { ">=", Ge, 2, 2, -1}, | |
114 | { "<=", Le, 2, 2, -1}, | |
115 | { ">", Gt, 2, 1, -1}, | |
116 | { "<", Lt, 2, 1, -1}, | |
117 | { "&", And, 2, 1, -2}, | |
118 | { "|", Or, 2, 1, -2} | |
bc97a989 LM |
119 | }; |
120 | ||
715580ff | 121 | #define NB_FUNCTIONS 24 |
bc97a989 | 122 | keyword_t functions[NB_FUNCTIONS] = { |
c47a9298 LM |
123 | { "sqrt", Sqr, 1, 4, 5}, |
124 | { "pow", Pow, 2, 3, 5}, | |
125 | { "cos", Cos, 1, 3, 5}, | |
126 | { "sin", Sin, 1, 3, 5}, | |
9e52bbc5 LM |
127 | { "tan", Tan, 1, 3, 5}, |
128 | { "acos", Acos, 1, 4, 5}, | |
129 | { "asin", Asin, 1, 4, 5}, | |
471da7c9 | 130 | { "atan", Atan, 1, 4, 5}, |
89cf0955 | 131 | { "log", Log, 1, 3, 5}, |
9e52bbc5 LM |
132 | { "exp", Exp, 1, 3, 5}, |
133 | { "abs", Abs, 1, 3, 5}, | |
134 | { "floor", Floor, 1, 5, 5}, | |
135 | { "ceil", Ceil, 1, 4, 5}, | |
2a688642 | 136 | { "sto", Store, 2, 3, 5}, |
6ba1dd0f | 137 | { "rcl", Recall, 1, 3, 5}, |
a8cf32ba LM |
138 | { "inc", Inc, 1, 3, 5}, |
139 | { "dec", Dec, 1, 3, 5}, | |
ca3e2a2f LM |
140 | { "disp", Disp, 0, 4, 9}, |
141 | { "quit", Quit, 0, 4, 9}, | |
142 | { "help", Help, 0, 4, 9}, | |
94b4e517 | 143 | { "!", Not, 1, 1, 6}, |
2a688642 | 144 | { "cond", Cond, 3, 4, 5}, |
715580ff LM |
145 | { "while", While, 2, 5, 5}, |
146 | { "print", Print, 1, 5, 5} | |
471da7c9 LM |
147 | }; |
148 | ||
5075f6ea | 149 | #define NB_CONSTANTS 3 |
471da7c9 | 150 | keyword_t constants[NB_CONSTANTS] = { |
5075f6ea LM |
151 | { "ans", Ans, 0, 3, 5}, |
152 | { "e", E, 0, 1, 5}, | |
153 | { "pi", Pi, 0, 2, 5} | |
bc97a989 LM |
154 | }; |
155 | ||
db660e60 LM |
156 | #define NB_SYMBOLS 4 |
157 | char *symbols[NB_SYMBOLS] = { | |
158 | "(", ")", "{", "}" | |
159 | }; | |
160 | ||
d2ff8478 LM |
161 | /* subparser function */ |
162 | ||
163 | element_t *subparser (element_t **proot, char **pstr, func_t func, int nbops, int prio) | |
164 | { | |
165 | element_t *new = newelement (func, nbops, prio); | |
d2ff8478 LM |
166 | new->ops[0] = *proot; |
167 | new->ops[1] = parser (*pstr, pstr, new->prio); | |
686c4bc2 | 168 | if ((new->ops[1] == NULL) || ((new->ops[1] != ERROR_OP) && (new->ops[1]->prio == 9))) { |
67b13e3d LM |
169 | delelement (new->ops[1]); |
170 | new->ops[1] = ERROR_OP; | |
171 | } | |
d2ff8478 | 172 | if (new->ops[1] == ERROR_OP) { |
031d7bba LM |
173 | delelement (new); |
174 | *proot = NULL; | |
d2ff8478 LM |
175 | return ERROR_OP; |
176 | } | |
3b4b0bbe | 177 | *proot = newelement (Val, 1, 5); |
d2ff8478 LM |
178 | (*proot)->ops[0] = new; |
179 | ||
180 | return *proot; | |
181 | } | |
182 | ||
bc97a989 LM |
183 | /* parser function */ |
184 | ||
ef37d966 | 185 | element_t *parser (char *str, char **next, int prio) |
0b489a77 | 186 | { |
bc97a989 | 187 | element_t *root = NULL; |
85b4a72c | 188 | int i; |
bc97a989 | 189 | |
04d68907 | 190 | VERBOSE (DEBUG, fprintf (stdout, "Starting parsing\n")); |
49223129 | 191 | |
bc97a989 LM |
192 | /* main loop */ |
193 | while (*str != '\0') { | |
194 | int found = 0; | |
195 | element_t *new = NULL; | |
04d68907 | 196 | VERBOSE (INFO, fprintf (stdout, "Processing: %s\n", str)); |
bc97a989 LM |
197 | |
198 | /* skip spaces and tabs */ | |
199 | ||
200 | if ((*str == ' ') || (*str == '\t')) { | |
201 | str++; | |
202 | continue; | |
203 | } | |
204 | ||
124da7fd LM |
205 | /* check for open brace */ |
206 | ||
207 | if (*str == '{') { | |
208 | VERBOSE (DEBUG, fprintf (stdout, "start processing brace\n")); | |
62d56da6 | 209 | if (root != NULL) { |
124da7fd LM |
210 | delelement (root); |
211 | return ERROR_OP; | |
212 | } | |
62d56da6 LM |
213 | element_t **prog = NULL; |
214 | new = newelement (Prog, 0, 5); | |
62d56da6 LM |
215 | root = new; |
216 | prog = &root; | |
124da7fd LM |
217 | |
218 | do { | |
124da7fd LM |
219 | new = parser (str + 1, &str, 0); |
220 | if ((new == NULL) || ((new != ERROR_OP) && (new->prio == 9))) { | |
221 | delelement (new); | |
222 | new = ERROR_OP; | |
223 | } | |
7929d368 | 224 | if (new == ERROR_OP) { |
124da7fd | 225 | delelement (root); |
62d56da6 | 226 | return ERROR_OP; |
124da7fd | 227 | } |
62d56da6 LM |
228 | element_t *newprog = newelement (Prog, (*prog)->nbops + 1, 5); |
229 | for (i = 0; i < (*prog)->nbops; i++) { | |
230 | newprog->ops[i] = (*prog)->ops[i]; | |
231 | (*prog)->ops[i] = NULL; | |
124da7fd | 232 | } |
62d56da6 LM |
233 | newprog->ops[(*prog)->nbops] = new; |
234 | delelement (*prog); | |
235 | (*prog) = newprog; | |
124da7fd LM |
236 | } while (*str == ','); |
237 | ||
238 | if (*str != '}') { | |
239 | delelement (root); | |
240 | return ERROR_OP; | |
241 | } | |
242 | str++; | |
243 | VERBOSE (DEBUG, fprintf (stdout, "stop processing brace\n")); | |
244 | continue; | |
245 | } | |
246 | ||
85b4a72c | 247 | /* check for open bracket */ |
0b489a77 | 248 | |
0b489a77 | 249 | if (*str == '(') { |
04d68907 | 250 | VERBOSE (DEBUG, fprintf (stdout, "start processing bracket\n")); |
0b489a77 | 251 | if (root) { |
85b4a72c LM |
252 | do { |
253 | found = 0; | |
ef37d966 | 254 | new = parser (str + 1, &str, 0); |
686c4bc2 | 255 | if ((new == NULL) || ((new != ERROR_OP) && (new->prio == 9))) { |
67b13e3d LM |
256 | delelement (new); |
257 | new = ERROR_OP; | |
258 | } | |
686c4bc2 | 259 | if ((new == NULL) || (new == ERROR_OP)) { |
031d7bba | 260 | delelement (root); |
85b4a72c LM |
261 | return ERROR_OP; |
262 | } | |
263 | for (i = 0; i < root->nbops; i++) { | |
264 | if (root->ops[i] == NULL) { | |
0b489a77 LM |
265 | root->ops[i] = new; |
266 | found = 1; | |
267 | break; | |
268 | } | |
269 | } | |
85b4a72c | 270 | if (!found) { |
031d7bba LM |
271 | delelement (new); |
272 | delelement (root); | |
85b4a72c LM |
273 | return ERROR_OP; |
274 | } | |
275 | } while (*str == ','); | |
276 | } else { | |
3b4b0bbe | 277 | root = newelement (Val, 1, 5); |
ef37d966 | 278 | new = parser (str + 1, &str, 0); |
686c4bc2 | 279 | if ((new == NULL) || ((new != ERROR_OP) && (new->prio == 9))) { |
67b13e3d LM |
280 | delelement (new); |
281 | new = ERROR_OP; | |
282 | } | |
686c4bc2 | 283 | if ((new == NULL) || (new == ERROR_OP) || (*str == ',')) { |
031d7bba LM |
284 | delelement (new); |
285 | delelement (root); | |
efdfb543 LM |
286 | return ERROR_OP; |
287 | } | |
85b4a72c | 288 | root->ops[0] = new; |
0b489a77 | 289 | } |
3c0db5bc LM |
290 | if (*str != ')') { |
291 | delelement (root); | |
292 | return ERROR_OP; | |
293 | } | |
85b4a72c | 294 | str++; |
04d68907 | 295 | VERBOSE (DEBUG, fprintf (stdout, "stop processing bracket\n")); |
efdfb543 | 296 | continue; |
49223129 | 297 | } |
85b4a72c | 298 | |
124da7fd | 299 | /* check for closing bracket, closing brace or koma */ |
85b4a72c | 300 | |
124da7fd | 301 | if ((*str == ')') || (*str == '}') || (*str == ',')) { |
45a631a8 LM |
302 | if (prio == -9) { |
303 | delelement (root); | |
304 | return ERROR_OP; | |
305 | } | |
49223129 | 306 | if (next != NULL) { |
85b4a72c | 307 | *next = str; |
49223129 LM |
308 | } |
309 | return root; | |
0b489a77 LM |
310 | } |
311 | ||
bc97a989 LM |
312 | /* look for operators */ |
313 | ||
314 | for (i = 0; i < NB_OPERATORS; i++) { | |
315 | keyword_t *operator = operators + i; | |
316 | if (codecmp (operator->keyword, str) == 0) { | |
04d68907 | 317 | VERBOSE (DEBUG, fprintf (stdout, "start processing operator\n")); |
11cda8d7 | 318 | if (root) { |
ef37d966 | 319 | if ((prio) && (prio > operator->prio)) { |
04d68907 | 320 | VERBOSE (DEBUG, fprintf (stdout, "stop because operator priority\n")); |
ef37d966 LM |
321 | *next = str; |
322 | return root; | |
323 | } | |
324 | str += operator->offset; | |
04d68907 | 325 | VERBOSE (INFO, fprintf (stdout, "Oper: %d\n", operator->func)); |
d2ff8478 | 326 | if (subparser (&root, &str, operator->func, operator->nbops, operator->prio) == ERROR_OP) { |
031d7bba | 327 | delelement (root); |
ef37d966 | 328 | return ERROR_OP; |
11cda8d7 | 329 | } |
3b4b0bbe | 330 | } else if (*str == '-') { |
d32ea0b0 | 331 | root = newelement (Sig, 1, 9); |
49223129 | 332 | } else { |
0b489a77 | 333 | return ERROR_OP; |
bc97a989 | 334 | } |
bc97a989 | 335 | found = 1; |
04d68907 | 336 | VERBOSE (DEBUG, fprintf (stdout, "stop processing operator\n")); |
bc97a989 LM |
337 | break; |
338 | } | |
339 | } | |
340 | if (found) { | |
bc97a989 LM |
341 | continue; |
342 | } | |
49223129 | 343 | |
bc97a989 LM |
344 | /* look for functions */ |
345 | ||
346 | for (i = 0; i < NB_FUNCTIONS; i++) { | |
347 | keyword_t *function = functions + i; | |
348 | if (codecmp (function->keyword, str) == 0) { | |
04d68907 | 349 | VERBOSE (DEBUG, fprintf (stdout, "start processing function\n")); |
bc97a989 | 350 | if (root == NULL) { |
04d68907 | 351 | VERBOSE (INFO, fprintf (stdout, "Func: %d\n", function->func)); |
d32ea0b0 | 352 | root = newelement (function->func, function->nbops, function->prio); |
031d7bba LM |
353 | } else { |
354 | delelement (root); | |
0b489a77 | 355 | return ERROR_OP; |
bc97a989 LM |
356 | } |
357 | str += function->offset; | |
358 | found = 1; | |
04d68907 | 359 | VERBOSE (DEBUG, fprintf (stdout, "stop processing function\n")); |
bc97a989 LM |
360 | break; |
361 | } | |
362 | } | |
363 | if (found) { | |
bc97a989 LM |
364 | continue; |
365 | } | |
366 | ||
471da7c9 LM |
367 | /* look for constant */ |
368 | ||
369 | for (i = 0; i < NB_CONSTANTS; i++) { | |
370 | keyword_t *constant = constants + i; | |
371 | if (codecmp (constant->keyword, str) == 0) { | |
372 | VERBOSE (DEBUG, fprintf (stdout, "start processing constant\n")); | |
373 | if (root == NULL) { | |
5075f6ea | 374 | VERBOSE (INFO, fprintf (stdout, "Const: %d\n", constant->func)); |
d32ea0b0 | 375 | root = newelement (constant->func, constant->nbops, constant->prio); |
471da7c9 LM |
376 | } else { |
377 | delelement (root); | |
378 | return ERROR_OP; | |
379 | } | |
380 | str += constant->offset; | |
381 | found = 1; | |
382 | VERBOSE (DEBUG, fprintf (stdout, "stop processing constant\n")); | |
383 | break; | |
384 | } | |
385 | } | |
386 | if (found) { | |
387 | continue; | |
388 | } | |
389 | ||
bc97a989 LM |
390 | /* look for number */ |
391 | ||
0b9cc9b0 LM |
392 | if (((*str >= '0') && (*str <= '9')) || |
393 | (*str == '.') || (*str == '+') || (*str == '-')) { | |
04d68907 | 394 | VERBOSE (DEBUG, fprintf (stdout, "start processing value\n")); |
bc97a989 | 395 | char *pt; |
fd88e359 | 396 | double value = strtod (str, &pt); |
04d68907 | 397 | VERBOSE (INFO, fprintf (stdout, "Value: %f\n", value)); |
bc97a989 | 398 | if (str != pt) { |
ce6627f2 | 399 | if ((root == NULL) || (root->prio == 6)) { |
3b4b0bbe | 400 | new = newelement (Val, 1, 5); |
c47a9298 | 401 | new->value = value; |
ce6627f2 LM |
402 | if (root == NULL) { |
403 | root = new; | |
404 | } else { | |
405 | for (i = 0; i < root->nbops; i++) { | |
406 | if (root->ops[i] == NULL) { | |
407 | root->ops[i] = new; | |
408 | found = 1; | |
409 | break; | |
410 | } | |
411 | } | |
412 | if (!found) { | |
413 | delelement (new); | |
414 | delelement (root); | |
415 | return ERROR_OP; | |
416 | } | |
417 | } | |
c47a9298 | 418 | str = pt; |
32741902 LM |
419 | } else if ((*str == '+') || (*str == '-')) { |
420 | if ((prio) && (prio > 1)) { | |
421 | VERBOSE (DEBUG, fprintf (stdout, "stop because operator priority\n")); | |
422 | *next = str; | |
423 | return root; | |
424 | } | |
425 | if (subparser (&root, &str, Add, 2, 1) == ERROR_OP) { | |
031d7bba | 426 | delelement (root); |
0b489a77 | 427 | return ERROR_OP; |
bc97a989 | 428 | } |
0b9cc9b0 | 429 | } else { |
031d7bba | 430 | delelement (root); |
0b9cc9b0 | 431 | return ERROR_OP; |
bc97a989 | 432 | } |
bc97a989 LM |
433 | found = 1; |
434 | } | |
04d68907 | 435 | VERBOSE (DEBUG, fprintf (stdout, "stop processing value\n")); |
bc97a989 LM |
436 | } |
437 | ||
438 | /* error */ | |
439 | ||
440 | if (!found) { | |
031d7bba | 441 | delelement (root); |
0b489a77 | 442 | return ERROR_OP; |
bc97a989 LM |
443 | } |
444 | ||
445 | } | |
446 | ||
49223129 LM |
447 | if (next != NULL) { |
448 | *next = str; | |
449 | } | |
031d7bba | 450 | |
bc97a989 LM |
451 | return root; |
452 | } | |
453 | ||
454 | /* print element tree */ | |
455 | ||
456 | void print_element (element_t *root, int level) | |
457 | { | |
458 | char *func = NULL; | |
459 | int i; | |
460 | ||
49223129 | 461 | if ((root == NULL) || (root == ERROR_OP)) { |
bc97a989 | 462 | return; |
49223129 LM |
463 | } |
464 | ||
bc97a989 | 465 | for (i = 0; i < level; i++) { |
04d68907 | 466 | fprintf (stdout, " "); |
bc97a989 LM |
467 | } |
468 | ||
469 | switch (root->func) { | |
470 | case Val: func = "Value"; break; | |
89cf0955 | 471 | case Sig: func = "Sign"; break; |
bc97a989 LM |
472 | case Add: func = "Addition"; break; |
473 | case Sub: func = "Subtraction"; break; | |
474 | case Mul: func = "Multiplication"; break; | |
475 | case Div: func = "Division"; break; | |
c47a9298 | 476 | case Mod: func = "Modulo"; break; |
bc97a989 LM |
477 | case Pow: func = "Power"; break; |
478 | case Sqr: func = "Square Root"; break; | |
479 | case Cos: func = "Cosine"; break; | |
480 | case Sin: func = "Sine"; break; | |
9e52bbc5 LM |
481 | case Tan: func = "Tangent"; break; |
482 | case Acos: func = "Arc Cosine"; break; | |
483 | case Asin: func = "Arc Sine"; break; | |
471da7c9 | 484 | case Atan: func = "Arc Tangent"; break; |
bc97a989 LM |
485 | case Log: func = "Logarithm"; break; |
486 | case Exp: func = "Exponantial"; break; | |
9e52bbc5 LM |
487 | case Abs: func = "Absolute value"; break; |
488 | case Ceil: func = "Ceil value"; break; | |
489 | case Floor: func = "Floor value"; break; | |
6ba1dd0f LM |
490 | case Store: func = "Store"; break; |
491 | case Recall: func = "Recall"; break; | |
a8cf32ba LM |
492 | case Inc: func = "Increase"; break; |
493 | case Dec: func = "Decrease"; break; | |
6ba1dd0f | 494 | case Disp: func = "Display"; break; |
471da7c9 LM |
495 | case Quit: func = "Quit"; break; |
496 | case Help: func = "Help"; break; | |
5075f6ea | 497 | case Ans: func = "Ans"; break; |
471da7c9 LM |
498 | case Pi: func = "Pi"; break; |
499 | case E: func = "E"; break; | |
7fe742c9 LM |
500 | case Equal: func = "Equal"; break; |
501 | case Diff: func = "Different"; break; | |
502 | case Ge: func = "Greater or equal"; break; | |
503 | case Le: func = "Lesser or equal"; break; | |
504 | case Gt: func = "Greater"; break; | |
505 | case Lt: func = "Lesser"; break; | |
ca3e2a2f LM |
506 | case And: func = "And"; break; |
507 | case Or: func = "Or"; break; | |
508 | case Not: func = "Not"; break; | |
94b4e517 | 509 | case Cond: func = "Condition"; break; |
2a688642 | 510 | case While: func = "While"; break; |
124da7fd | 511 | case Prog: func = "Program"; break; |
715580ff | 512 | case Print: func = "Print"; break; |
bc97a989 LM |
513 | } |
514 | ||
04d68907 | 515 | fprintf (stdout, "Function: %s\n", func); |
bc97a989 | 516 | |
85b4a72c | 517 | if ((root->func == Val) && (root->ops[0] == NULL)) { |
bc97a989 | 518 | for (i = 0; i < level; i++) { |
04d68907 | 519 | fprintf (stdout, " "); |
bc97a989 | 520 | } |
04d68907 | 521 | fprintf (stdout, "value: %f\n", root->value); |
bc97a989 LM |
522 | } else { |
523 | for (i = 0; i < root->nbops; i++) { | |
524 | print_element (root->ops[i], level + 1); | |
525 | } | |
526 | } | |
527 | } | |
528 | ||
6ba1dd0f LM |
529 | /* storage functions */ |
530 | ||
3639df66 | 531 | double store (int index, double value) |
6ba1dd0f LM |
532 | { |
533 | if ((index > 0) && (index <= STORAGE_SIZE)) { | |
3639df66 | 534 | storage[index - 1] = value; |
6ba1dd0f LM |
535 | } else { |
536 | VERBOSE (WARNING, fprintf (stdout, "invalid index (%d) [1, %d]\n", index, STORAGE_SIZE)); | |
537 | } | |
3639df66 | 538 | return value; |
6ba1dd0f LM |
539 | } |
540 | ||
541 | double recall (int index) | |
542 | { | |
543 | if ((index > 0) && (index <= STORAGE_SIZE)) { | |
544 | return storage[index - 1]; | |
545 | } else { | |
546 | VERBOSE (WARNING, fprintf (stdout, "invalid index (%d) [1, %d]\n", index, STORAGE_SIZE)); | |
547 | } | |
548 | return 0; | |
549 | } | |
550 | ||
a8cf32ba LM |
551 | double increase (int index) |
552 | { | |
553 | if ((index > 0) && (index <= STORAGE_SIZE)) { | |
554 | return storage[index - 1]++; | |
555 | } else { | |
556 | VERBOSE (WARNING, fprintf (stdout, "invalid index (%d) [1, %d]\n", index, STORAGE_SIZE)); | |
557 | } | |
558 | return 0; | |
559 | } | |
560 | ||
561 | double decrease (int index) | |
562 | { | |
563 | if ((index > 0) && (index <= STORAGE_SIZE)) { | |
564 | return storage[index - 1]--; | |
565 | } else { | |
566 | VERBOSE (WARNING, fprintf (stdout, "invalid index (%d) [1, %d]\n", index, STORAGE_SIZE)); | |
567 | } | |
568 | return 0; | |
569 | } | |
570 | ||
6ba1dd0f LM |
571 | void display (void) |
572 | { | |
573 | int i; | |
574 | fprintf (stdout, "storage:"); | |
575 | for (i = 0; i < STORAGE_SIZE; i++) { | |
576 | fprintf (stdout, " %g", storage[i]); | |
577 | } | |
578 | fprintf (stdout, "\n"); | |
579 | } | |
580 | ||
2a688642 LM |
581 | /* While do function */ |
582 | ||
583 | double while_do (element_t *cond, element_t *action) | |
584 | { | |
585 | double ret = 0; | |
586 | element_t *temp = NULL; | |
587 | ||
588 | VERBOSE (DEBUG, fprintf (stdout, "starting while loop\n")); | |
2a688642 LM |
589 | while (1) { |
590 | VERBOSE (DEBUG, fprintf (stdout, "loop...\n")); | |
591 | ||
592 | temp = dupelement (cond); | |
593 | if (!evaluate_element (temp, 0)) { | |
594 | break; | |
595 | } | |
596 | if (action) { | |
597 | temp = dupelement (action); | |
598 | ret = evaluate_element (temp, 0); | |
599 | } | |
600 | } | |
601 | ||
602 | VERBOSE (DEBUG, fprintf (stdout, "ending while loop\n")); | |
603 | ||
604 | return ret; | |
605 | } | |
606 | ||
124da7fd LM |
607 | /* program function */ |
608 | ||
609 | double program_do (element_t **prog, int nbcalls) | |
610 | { | |
611 | double ret = 0; | |
612 | int i; | |
613 | for (i = 0; i < nbcalls; i++) { | |
614 | ret = evaluate_element (prog[i], 0); | |
615 | prog[i] = NULL; | |
616 | } | |
617 | return ret; | |
618 | } | |
619 | ||
89cf0955 LM |
620 | /* quit function */ |
621 | ||
622 | void quit (void) | |
623 | { | |
04d68907 | 624 | fprintf (stdout, "bye\n"); |
89cf0955 LM |
625 | exit (0); |
626 | } | |
627 | ||
628 | /* help message */ | |
629 | ||
630 | void help (void) | |
631 | { | |
04d68907 | 632 | fprintf (stdout, "calc is a simple calculator\n\n"); |
94b4e517 LM |
633 | fprintf (stdout, "supported operators:"); |
634 | fprintf (stdout, " + - * / %% ^\n"); | |
635 | fprintf (stdout, "camparison operators:"); | |
636 | fprintf (stdout, " == != >= <= > <\n"); | |
637 | fprintf (stdout, "logical operators:"); | |
638 | fprintf (stdout, " & | !\n"); | |
9e52bbc5 | 639 | fprintf (stdout, "mathematic functions:"); |
b9c1c40d LM |
640 | fprintf (stdout, " pow sqrt log exp\n"); |
641 | fprintf (stdout, "trigonometric functions:"); | |
642 | fprintf (stdout, " cos sin tan acos asin atan\n"); | |
94b4e517 | 643 | fprintf (stdout, "supported functions:"); |
9e52bbc5 | 644 | fprintf (stdout, " abs ceil floor\n"); |
94b4e517 | 645 | fprintf (stdout, "storage functions:"); |
a8cf32ba | 646 | fprintf (stdout, " sto rcl inc dec\n"); |
94b4e517 | 647 | fprintf (stdout, "conditional functions:"); |
715580ff | 648 | fprintf (stdout, " cond while print {}\n"); |
94b4e517 LM |
649 | fprintf (stdout, "miscellaneous functions:"); |
650 | fprintf (stdout, " quit help\n"); | |
651 | fprintf (stdout, "supported constants:"); | |
471da7c9 | 652 | fprintf (stdout, " e pi\n"); |
89cf0955 | 653 | } |
3b4b0bbe | 654 | |
f2927108 LM |
655 | /* evaluate element tree */ |
656 | ||
89cf0955 LM |
657 | #define MASK_SUB 0x1 |
658 | #define MASK_DIV 0x2 | |
659 | ||
3b4b0bbe | 660 | double evaluate_element (element_t *root, char mask) |
f2927108 LM |
661 | { |
662 | double op0 = 0, op1 = 0; | |
3b4b0bbe | 663 | char nextmask = mask; |
f2927108 LM |
664 | |
665 | if ((root == NULL) || (root == ERROR_OP)) { | |
04d68907 | 666 | VERBOSE (WARNING, fprintf (stdout, "error while evaluating\n")); |
f2927108 LM |
667 | return 0; |
668 | } | |
669 | ||
3b4b0bbe LM |
670 | /* mask to manage sub operator sub and div */ |
671 | switch (root->func) { | |
672 | case Add: | |
673 | nextmask &= ~MASK_SUB; | |
674 | nextmask &= ~MASK_DIV; | |
675 | break; | |
676 | case Sub: | |
677 | nextmask |= MASK_SUB; | |
678 | nextmask &= ~MASK_DIV; | |
679 | break; | |
680 | case Mul: | |
681 | nextmask &= ~MASK_DIV; | |
682 | break; | |
683 | case Div: | |
684 | nextmask |= MASK_DIV; | |
685 | break; | |
686 | default: | |
687 | nextmask = mask; | |
688 | } | |
689 | ||
f2927108 LM |
690 | switch (root->func) { |
691 | case Val: | |
3b4b0bbe LM |
692 | case Sig: |
693 | op0 = (root->ops[0]) ? evaluate_element (root->ops[0], nextmask) : root->value; | |
f2927108 LM |
694 | break; |
695 | case Add: | |
696 | case Sub: | |
697 | case Mul: | |
698 | case Div: | |
c47a9298 | 699 | case Mod: |
f2927108 | 700 | case Pow: |
3639df66 | 701 | case Store: |
7fe742c9 LM |
702 | case Equal: |
703 | case Diff: | |
704 | case Ge: | |
705 | case Le: | |
706 | case Gt: | |
707 | case Lt: | |
ca3e2a2f LM |
708 | case And: |
709 | case Or: | |
f2927108 | 710 | if (root->ops[1]) { |
3b4b0bbe | 711 | op1 = evaluate_element (root->ops[1], nextmask); |
3639df66 | 712 | } else if (root->func != Store) { |
04d68907 | 713 | VERBOSE (WARNING, fprintf (stdout, "error while evaluating (op[1])\n")); |
f2927108 LM |
714 | return 0; |
715 | } | |
716 | /* fallthrough */ | |
717 | case Sqr: | |
718 | case Cos: | |
719 | case Sin: | |
9e52bbc5 LM |
720 | case Tan: |
721 | case Acos: | |
722 | case Asin: | |
471da7c9 | 723 | case Atan: |
f2927108 LM |
724 | case Log: |
725 | case Exp: | |
9e52bbc5 LM |
726 | case Abs: |
727 | case Ceil: | |
728 | case Floor: | |
6ba1dd0f | 729 | case Recall: |
a8cf32ba LM |
730 | case Inc: |
731 | case Dec: | |
ca3e2a2f | 732 | case Not: |
94b4e517 | 733 | case Cond: |
f2927108 | 734 | if (root->ops[0]) { |
3b4b0bbe | 735 | op0 = evaluate_element (root->ops[0], 0); |
f2927108 | 736 | } else { |
04d68907 | 737 | VERBOSE (WARNING, fprintf (stdout, "error while evaluating (op[0])\n")); |
f2927108 LM |
738 | return 0; |
739 | } | |
89cf0955 | 740 | break; |
6ba1dd0f | 741 | case Disp: |
471da7c9 LM |
742 | case Quit: |
743 | case Help: | |
5075f6ea | 744 | case Ans: |
471da7c9 LM |
745 | case Pi: |
746 | case E: | |
124da7fd | 747 | case Prog: |
09d87cae | 748 | break; |
2a688642 | 749 | case While: |
09d87cae LM |
750 | if (root->ops[0] == NULL) { |
751 | VERBOSE (WARNING, fprintf (stdout, "error while evaluating (op[0])\n")); | |
752 | return 0; | |
753 | } | |
89cf0955 | 754 | break; |
715580ff LM |
755 | case Print: |
756 | op0 = (root->ops[0]) ? evaluate_element (root->ops[0], 0) : answer; | |
757 | break; | |
f2927108 LM |
758 | } |
759 | ||
760 | switch (root->func) { | |
3b4b0bbe LM |
761 | case Val: return op0; |
762 | case Sig: return -op0; | |
763 | case Add: return ((mask & MASK_SUB) == 0) ? op0 + op1 : op0 - op1; | |
764 | case Sub: return ((mask & MASK_SUB) == 0) ? op0 - op1 : op0 + op1; | |
765 | case Mul: return ((mask & MASK_DIV) == 0) ? op0 * op1 : op0 / op1; | |
766 | case Div: return ((mask & MASK_DIV) == 0) ? op0 / op1 : op0 * op1; | |
c47a9298 | 767 | case Mod: return fmod (op0, op1); |
f2927108 LM |
768 | case Pow: return pow (op0, op1); |
769 | case Sqr: return sqrt (op0); | |
770 | case Cos: return cos (op0); | |
771 | case Sin: return sin (op0); | |
9e52bbc5 LM |
772 | case Tan: return tan (op0); |
773 | case Acos: return acos (op0); | |
774 | case Asin: return asin (op0); | |
471da7c9 | 775 | case Atan: return atan (op0); |
f2927108 LM |
776 | case Log: return log (op0); |
777 | case Exp: return exp (op0); | |
9e52bbc5 LM |
778 | case Abs: return fabs (op0); |
779 | case Ceil: return ceil (op0); | |
780 | case Floor: return floor (op0); | |
3639df66 | 781 | case Store: return store ((int)op0, (op1) ? op1 : answer); |
6ba1dd0f | 782 | case Recall: return recall ((int)op0); |
a8cf32ba LM |
783 | case Inc: return increase ((int)op0); |
784 | case Dec: return decrease ((int)op0); | |
6ba1dd0f | 785 | case Disp: display (); break; |
471da7c9 LM |
786 | case Quit: quit (); break; |
787 | case Help: help (); break; | |
5075f6ea | 788 | case Ans: return answer; |
471da7c9 LM |
789 | case Pi: return M_PI; |
790 | case E: return M_E; | |
7fe742c9 LM |
791 | case Equal: return op0 == op1; |
792 | case Diff: return op0 != op1; | |
793 | case Ge: return op0 >= op1; | |
794 | case Le: return op0 <= op1; | |
795 | case Gt: return op0 > op1; | |
796 | case Lt: return op0 < op1; | |
ca3e2a2f LM |
797 | case And: return (op0 != 0) && (op1 != 0); |
798 | case Or: return (op0 != 0) || (op1 != 0); | |
799 | case Not: return (op0 == 0); | |
94b4e517 LM |
800 | case Cond: |
801 | if ((op0) && (root->ops[1])) { | |
802 | return evaluate_element (root->ops[1], 0); | |
803 | } else if ((!op0) && (root->ops[2])) { | |
804 | return evaluate_element (root->ops[2], 0); | |
805 | } else { | |
806 | return 0; | |
807 | } | |
2a688642 | 808 | case While: return while_do (root->ops[0], root->ops[1]); |
124da7fd | 809 | case Prog: return program_do (root->ops, root->nbops); |
715580ff | 810 | case Print: printf (format, op0); return op0; |
f2927108 LM |
811 | } |
812 | ||
813 | return 0; | |
814 | } | |
815 | ||
b9c1c40d LM |
816 | char **generate_completion_list () |
817 | { | |
db660e60 LM |
818 | int i, j, l = 0; |
819 | char **list = (char **) calloc (NB_OPERATORS + NB_FUNCTIONS + NB_CONSTANTS + NB_SYMBOLS + 1, sizeof (char *)); | |
b9c1c40d LM |
820 | if (list == NULL) { |
821 | VERBOSE (ERROR, fprintf (stderr, "can't allocate memory\n")); | |
822 | exit (1); | |
823 | } | |
824 | ||
db660e60 LM |
825 | for (i = 0; i < NB_OPERATORS; i++) { |
826 | list[l] = strdup ((operators + i)->keyword); | |
827 | for (j = 0; j < (int)strlen (list[l]); j++) { | |
828 | if (list[i][j] == '\t') { | |
829 | list[i][j] = '\0'; | |
830 | } | |
831 | } | |
d8f4df0f LM |
832 | if (list[l] != NULL) { |
833 | l++; | |
db660e60 | 834 | } |
db660e60 LM |
835 | } |
836 | ||
b9c1c40d LM |
837 | for (i = 0; i < NB_FUNCTIONS; i++) { |
838 | list[l] = strdup ((functions + i)->keyword); | |
d8f4df0f LM |
839 | if (list[l] != NULL) { |
840 | l++; | |
b9c1c40d | 841 | } |
b9c1c40d LM |
842 | } |
843 | ||
844 | for (i = 0; i < NB_CONSTANTS; i++) { | |
845 | list[l] = strdup ((constants + i)->keyword); | |
d8f4df0f LM |
846 | if (list[l] != NULL) { |
847 | l++; | |
b9c1c40d | 848 | } |
b9c1c40d LM |
849 | } |
850 | ||
db660e60 LM |
851 | for (i = 0; i < NB_SYMBOLS; i++) { |
852 | list[l] = strdup (symbols[i]); | |
d8f4df0f LM |
853 | if (list[l] != NULL) { |
854 | l++; | |
db660e60 | 855 | } |
db660e60 LM |
856 | } |
857 | ||
b9c1c40d LM |
858 | return (list); |
859 | } | |
860 | ||
861 | void free_completion_list (char **list) | |
862 | { | |
863 | int i; | |
864 | ||
865 | if (list) { | |
866 | for (i = 0; i < NB_FUNCTIONS + NB_CONSTANTS; i++) { | |
867 | if (list[i] != NULL) { | |
868 | free (list[i]); | |
869 | } | |
870 | } | |
871 | free (list); | |
872 | } | |
873 | } | |
874 | ||
875 | ||
bc97a989 | 876 | /* vim: set ts=4 sw=4 et: */ |