1: /*
2: ================================================================================
3: RPL/2 (R) version 4.1.32
4: Copyright (C) 1989-2020 Dr. BERTRAND Joël
5:
6: This file is part of RPL/2.
7:
8: RPL/2 is free software; you can redistribute it and/or modify it
9: under the terms of the CeCILL V2 License as published by the french
10: CEA, CNRS and INRIA.
11:
12: RPL/2 is distributed in the hope that it will be useful, but WITHOUT
13: ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14: FITNESS FOR A PARTICULAR PURPOSE. See the CeCILL V2 License
15: for more details.
16:
17: You should have received a copy of the CeCILL License
18: along with RPL/2. If not, write to info@cecill.info.
19: ================================================================================
20: */
21:
22:
23: #ifdef RPLCAS
24: # define RPLCXX
25:
26: // Giac inclut <semaphore.h> et définit sem_t. Or l'émulation
27: // des IPCS POSIX requiert une redéfinition de sem_t.
28:
29: # ifdef IPCS_SYSV
30: // NetBSD : _SEMAPHORE_H_
31: # define _SEMAPHORE_H_
32: // Linux : _SEMAPHORE_H
33: # define _SEMAPHORE_H
34: # endif
35:
36: # pragma GCC diagnostic push
37: # pragma GCC diagnostic ignored "-Wstrict-aliasing"
38: # pragma GCC diagnostic ignored "-Wunused-parameter"
39: # pragma GCC diagnostic ignored "-Wempty-body"
40: # pragma GCC diagnostic ignored "-Wunknown-pragmas"
41: # include "giacPCH.h"
42: # pragma GCC diagnostic pop
43:
44: # undef PACKAGE
45: # undef PACKAGE_NAME
46: # undef PACKAGE_STRING
47: # undef PACKAGE_TARNAME
48: # undef PACKAGE_VERSION
49: # undef VERSION
50: #endif
51:
52: extern "C"
53: {
54: # define __RPLCAS
55: # include "rpl-conv.h"
56: }
57:
58: #include <iostream>
59:
60: using namespace std;
61:
62: #ifdef RPLCAS
63: using namespace giac;
64: #endif
65:
66: void
67: initialisation_contexte_cas(struct_processus *s_etat_processus)
68: {
69: s_etat_processus->contexte_cas = NULL;
70: return;
71: }
72:
73: void
74: liberation_contexte_cas(struct_processus *s_etat_processus)
75: {
76: if (s_etat_processus->contexte_cas != NULL)
77: {
78: # ifdef RPLCAS
79: delete reinterpret_cast<giac::context *>(
80: s_etat_processus->contexte_cas);
81: # endif
82: s_etat_processus->contexte_cas = NULL;
83: }
84:
85: return;
86: }
87:
88: #ifdef RPLCAS
89: static unsigned char *
90: conversion_rpl_vers_cas(struct_processus *s_etat_processus,
91: struct_objet **s_objet)
92: {
93: logical1 drapeau;
94:
95: struct_liste_chainee *l_element_courant;
96:
97: struct_objet *s_objet_temporaire;
98:
99: t_8_bits registre[8];
100:
101: unsigned char *resultat;
102: unsigned char *index;
103:
104: for(int i = 0; i < 8; i++)
105: {
106: registre[i] = s_etat_processus->drapeaux_etat[i];
107: }
108:
109: sf(s_etat_processus, 35);
110: cf(s_etat_processus, 48);
111: cf(s_etat_processus, 49);
112: cf(s_etat_processus, 50);
113: cf(s_etat_processus, 53);
114: cf(s_etat_processus, 54);
115: cf(s_etat_processus, 55);
116: cf(s_etat_processus, 56);
117:
118: // GIAC considère que les fonctions sont écrites en minuscules. Le RPL/2
119: // part de l'hypothèse inverse. Il faut donc convertir en minuscules tous
120: // les noms de fonction. Les fonctions ne peuvent apparaître que dans le
121: // cas d'un objet de type ALG.
122:
123: if ((*s_objet)->type == NOM)
124: {
125: if (strcmp((const char *) reinterpret_cast<unsigned char *>(
126: reinterpret_cast<struct_nom *>((*s_objet)->objet)->nom),
127: "infinity") == 0)
128: {
129: if (evaluation(s_etat_processus, *s_objet, 'N') == d_erreur)
130: {
131: return(NULL);
132: }
133:
134: liberation(s_etat_processus, *s_objet);
135:
136: if (depilement(s_etat_processus, &(s_etat_processus
137: ->l_base_pile), s_objet) == d_erreur)
138: {
139: return(NULL);
140: }
141: }
142: }
143: else if ((*s_objet)->type == ALG)
144: {
145: if ((s_objet_temporaire = copie_objet(s_etat_processus,
146: (*s_objet), 'O')) == NULL)
147: {
148: s_etat_processus->erreur_systeme = d_es_allocation_memoire;
149: return(NULL);
150: }
151:
152: liberation(s_etat_processus, (*s_objet));
153: (*s_objet) = s_objet_temporaire;
154:
155: // Si l'expression contient la fonction infinity, on commence par
156: // forcer une évaluation numérique.
157:
158: l_element_courant = reinterpret_cast<struct_liste_chainee *>(
159: (*s_objet)->objet);
160: drapeau = d_faux;
161:
162: while(l_element_courant != NULL)
163: {
164: if (l_element_courant->donnee->type == NOM)
165: {
166: if (strcmp((const char *) reinterpret_cast<unsigned char *>(
167: reinterpret_cast<struct_nom *>(
168: l_element_courant->donnee->objet)->nom),
169: "infinity") == 0)
170: {
171: drapeau = d_vrai;
172: break;
173: }
174: }
175:
176: l_element_courant = l_element_courant->suivant;
177: }
178:
179: if (drapeau == d_vrai)
180: {
181: if (evaluation(s_etat_processus, *s_objet, 'N') == d_erreur)
182: {
183: return(NULL);
184: }
185:
186: liberation(s_etat_processus, *s_objet);
187:
188: if (depilement(s_etat_processus, &(s_etat_processus
189: ->l_base_pile), s_objet) == d_erreur)
190: {
191: return(NULL);
192: }
193: }
194: }
195:
196: if ((*s_objet)->type == ALG)
197: {
198:
199: l_element_courant = reinterpret_cast<struct_liste_chainee *>(
200: (*s_objet)->objet);
201:
202: while(l_element_courant != NULL)
203: {
204: if (l_element_courant->donnee->type == FCT)
205: {
206: unsigned char *ptr;
207:
208: ptr = reinterpret_cast<unsigned char *>(
209: reinterpret_cast<struct_fonction *>(
210: l_element_courant->donnee->objet)->nom_fonction);
211:
212: while((*ptr) != d_code_fin_chaine)
213: {
214: int c = (*ptr);
215:
216: if (isalpha(c))
217: {
218: c = tolower(c);
219: (*ptr) = (unsigned char) c;
220: }
221:
222: ptr++;
223: }
224: }
225:
226: l_element_courant = l_element_courant->suivant;
227: }
228: }
229:
230: resultat = formateur(s_etat_processus, 0, (*s_objet));
231:
232: // Il faut remplacer les occurrences de 'relax' par ' +'.
233:
234: index = resultat;
235: while((index = reinterpret_cast<unsigned char *>(
236: strstr(reinterpret_cast<char *>(index),
237: (const char *) "relax"))) != NULL)
238: {
239: memcpy(reinterpret_cast<char *>(index), " +", 5);
240: }
241:
242: // Si le résultat vaut infinity, on rajoute le signe +.
243:
244: if (strcmp(reinterpret_cast<char *>(resultat), "infinity") == 0)
245: {
246: if ((resultat = reinterpret_cast<unsigned char *>(
247: realloc(resultat, (strlen(reinterpret_cast<char *>(
248: resultat)) + 2) * sizeof(unsigned char)))) == NULL)
249: {
250: s_etat_processus->erreur_systeme = d_es_allocation_memoire;
251: return(NULL);
252: }
253:
254: strcpy(reinterpret_cast<char *>(resultat), "+infinity");
255: }
256:
257: if (resultat[0] == '\'')
258: {
259: resultat[0] = ' ';
260: resultat[strlen((const char *) resultat) - 1] = ' ';
261: }
262:
263: for(int i = 0; i < 8; i++)
264: {
265: s_etat_processus->drapeaux_etat[i] = registre[i];
266: }
267:
268: return(resultat);
269: }
270:
271:
272: static void
273: conversion_cas_vers_rpl(struct_processus *s_etat_processus,
274: unsigned char *expression)
275: {
276: logical1 drapeau;
277:
278: struct_liste_chainee *l_element_courant;
279:
280: struct_objet *s_objet;
281:
282: unsigned char *registre;
283:
284: registre = s_etat_processus->instruction_courante;
285: s_etat_processus->instruction_courante = expression;
286: recherche_type(s_etat_processus);
287: s_etat_processus->instruction_courante = registre;
288:
289: if ((s_etat_processus->l_base_pile == NULL) ||
290: (s_etat_processus->erreur_execution != d_ex) ||
291: (s_etat_processus->erreur_systeme != d_es))
292: {
293: return;
294: }
295:
296: // Le niveau 1 de la pile opérationnelle contient l'expression
297: // à convertir.
298:
299: if (depilement(s_etat_processus, &(s_etat_processus
300: ->l_base_pile), &s_objet) == d_erreur)
301: {
302: return;
303: }
304:
305: if ((s_objet->type == ALG) || (s_objet->type == RPN))
306: {
307: // On transcrit les fonctions de GIAC vers le RPL/2.
308:
309: l_element_courant = reinterpret_cast<struct_liste_chainee *>(
310: s_objet->objet);
311: drapeau = d_faux;
312:
313: // S'il y a une valeur infini, on force l'évaluation de l'expression.
314:
315: while(l_element_courant != NULL)
316: {
317: if (l_element_courant->donnee->type == NOM)
318: {
319: if (strcmp((const char *) reinterpret_cast<unsigned char *>(
320: reinterpret_cast<struct_nom *>(
321: l_element_courant->donnee->objet)->nom),
322: "infinity") == 0)
323: {
324: drapeau = d_vrai;
325: break;
326: }
327: }
328:
329: l_element_courant = l_element_courant->suivant;
330: }
331:
332: if (drapeau == d_vrai)
333: {
334: if (evaluation(s_etat_processus, s_objet, 'N') == d_erreur)
335: {
336: return;
337: }
338:
339: liberation(s_etat_processus, s_objet);
340:
341: if (depilement(s_etat_processus, &(s_etat_processus
342: ->l_base_pile), &s_objet) == d_erreur)
343: {
344: return;
345: }
346: }
347: }
348:
349: if ((s_objet->type == ALG) || (s_objet->type == RPN))
350: {
351: l_element_courant = reinterpret_cast<struct_liste_chainee *>(
352: s_objet->objet);
353:
354: while(l_element_courant != NULL)
355: {
356: if (l_element_courant->donnee->type == FCT)
357: {
358: // Nous sommes en présence d'un nom, donc de quelque chose
359: // qui n'est pas reconnu comme un mot-clef du RPL/2. S'il
360: // s'agit d'un mot-clef de GIAC, on le convertit.
361:
362: if ((strcmp((const char *)
363: reinterpret_cast<struct_fonction *>(l_element_courant
364: ->donnee->objet)->nom_fonction, "quote") == 0) ||
365: (strcmp((const char *)
366: reinterpret_cast<struct_fonction *>(l_element_courant
367: ->donnee->objet)->nom_fonction, "nop") == 0))
368: {
369: liberation(s_etat_processus, l_element_courant->donnee);
370:
371: if ((l_element_courant->donnee =
372: allocation(s_etat_processus, FCT)) == NULL)
373: {
374: s_etat_processus->erreur_systeme =
375: d_es_allocation_memoire;
376: return;
377: }
378:
379: if ((((struct_fonction *) l_element_courant->donnee->objet)
380: ->nom_fonction = reinterpret_cast<unsigned char *>(
381: malloc(6 * sizeof(unsigned char))))
382: == NULL)
383: {
384: s_etat_processus->erreur_systeme =
385: d_es_allocation_memoire;
386: return;
387: }
388:
389: strcpy(reinterpret_cast<char *>(
390: reinterpret_cast<struct_fonction *>(
391: l_element_courant->donnee->objet)->nom_fonction),
392: "RELAX");
393: }
394: }
395:
396: l_element_courant = l_element_courant->suivant;
397: }
398: }
399:
400: if (empilement(s_etat_processus, &(s_etat_processus->l_base_pile),
401: s_objet) == d_erreur)
402: {
403: return;
404: }
405:
406: return;
407: }
408: #endif
409:
410:
411: /*
412: ================================================================================
413: Fonction 'interface_cas'
414: ================================================================================
415: Entrées : commande à effectuer.
416: Le contrôle des types est effectué dans la fonction appelant interface_cas().
417: --------------------------------------------------------------------------------
418: Sorties : retour par la pile.
419: --------------------------------------------------------------------------------
420: Effets de bord : néant
421: ================================================================================
422: */
423:
424: #pragma GCC diagnostic push
425: #pragma GCC diagnostic ignored "-Wunused-parameter"
426: void
427: interface_cas(struct_processus *s_etat_processus,
428: enum t_rplcas_commandes commande)
429: {
430: #ifdef RPLCAS
431: struct_objet *s_objet_argument_1;
432: struct_objet *s_objet_argument_2;
433: struct_objet *s_objet_temporaire;
434:
435: struct_liste_chainee *l_element_courant;
436:
437: unsigned char *argument_1;
438: unsigned char *argument_2;
439: unsigned char *argument_3;
440: unsigned char *argument_4;
441:
442: unsigned int position;
443:
444: giac::context *contexte;
445:
446: if (s_etat_processus->contexte_cas == NULL)
447: {
448: try
449: {
450: s_etat_processus->contexte_cas = new giac::context;
451: }
452: catch(bad_alloc &exception)
453: {
454: s_etat_processus->erreur_systeme = d_es_allocation_memoire;
455: return;
456: }
457: catch(...)
458: {
459: s_etat_processus->erreur_execution = d_ex_erreur_interne_rplcas;
460: return;
461: }
462: }
463:
464: contexte = reinterpret_cast<giac::context *>(
465: s_etat_processus->contexte_cas);
466:
467: if ((s_etat_processus->erreur_execution != d_ex) ||
468: (s_etat_processus->erreur_systeme != d_es))
469: {
470: return;
471: }
472:
473: switch(commande)
474: {
475: case RPLCAS_INTEGRATION:
476: {
477: if (depilement(s_etat_processus, &(s_etat_processus->l_base_pile),
478: &s_objet_argument_1) == d_erreur)
479: {
480: s_etat_processus->erreur_execution = d_ex_manque_argument;
481: return;
482: }
483:
484: if (depilement(s_etat_processus, &(s_etat_processus->l_base_pile),
485: &s_objet_argument_2) == d_erreur)
486: {
487: liberation(s_etat_processus, s_objet_argument_1);
488: s_etat_processus->erreur_execution = d_ex_manque_argument;
489: return;
490: }
491:
492: if ((argument_1 = conversion_rpl_vers_cas(s_etat_processus,
493: &s_objet_argument_1)) == NULL)
494: {
495: s_etat_processus->erreur_systeme = d_es_allocation_memoire;
496: return;
497: }
498:
499: if ((argument_2 = conversion_rpl_vers_cas(s_etat_processus,
500: &s_objet_argument_2)) == NULL)
501: {
502: s_etat_processus->erreur_systeme = d_es_allocation_memoire;
503: return;
504: }
505:
506: liberation(s_etat_processus, s_objet_argument_1);
507: liberation(s_etat_processus, s_objet_argument_2);
508:
509: try
510: {
511: gen variable(
512: string(reinterpret_cast<const char *>(argument_1)),
513: contexte);
514: gen expression(
515: string(reinterpret_cast<const char *>(argument_2)),
516: contexte);
517:
518: gen resultat = integrate_gen(expression, variable,
519: contexte);
520: string chaine = "'" + resultat.print() + "'";
521:
522: conversion_cas_vers_rpl(s_etat_processus,
523: reinterpret_cast<unsigned char *>(const_cast<char *>(
524: chaine.c_str())));
525: }
526: catch(bad_alloc &exception)
527: {
528: s_etat_processus->erreur_systeme = d_es_allocation_memoire;
529: }
530: catch(...)
531: {
532: s_etat_processus->erreur_execution = d_ex_erreur_interne_rplcas;
533: }
534:
535: free(argument_1);
536: free(argument_2);
537:
538: break;
539: }
540:
541: case RPLCAS_LIMITE:
542: {
543: if (depilement(s_etat_processus, &(s_etat_processus->l_base_pile),
544: &s_objet_argument_1) == d_erreur)
545: {
546: s_etat_processus->erreur_execution = d_ex_manque_argument;
547: return;
548: }
549:
550: if (depilement(s_etat_processus, &(s_etat_processus->l_base_pile),
551: &s_objet_argument_2) == d_erreur)
552: {
553: liberation(s_etat_processus, s_objet_argument_1);
554: s_etat_processus->erreur_execution = d_ex_manque_argument;
555: return;
556: }
557:
558: // Fonction
559:
560: if ((argument_2 = conversion_rpl_vers_cas(s_etat_processus,
561: &s_objet_argument_2)) == NULL)
562: {
563: s_etat_processus->erreur_systeme = d_es_allocation_memoire;
564: return;
565: }
566:
567: // On parcourt la liste. Cette liste est tout d'abord copiée
568: // car on est susceptible de modifier le second élément.
569:
570: if ((s_objet_temporaire = copie_objet(s_etat_processus,
571: s_objet_argument_1, 'O')) == NULL)
572: {
573: s_etat_processus->erreur_systeme = d_es_allocation_memoire;
574: return;
575: }
576:
577: liberation(s_etat_processus, s_objet_argument_1);
578: s_objet_argument_1 = s_objet_temporaire;
579:
580: l_element_courant = reinterpret_cast<struct_liste_chainee *>
581: (s_objet_argument_1->objet);
582: position = 1;
583: argument_1 = NULL;
584: argument_3 = NULL;
585: argument_4 = NULL;
586:
587: while(l_element_courant != NULL)
588: {
589: switch(position)
590: {
591: case 1:
592: {
593: // Variable
594:
595: if ((argument_1 = reinterpret_cast<unsigned char *>
596: (malloc((strlen((const char *)
597: ((struct_variable *) (l_element_courant
598: ->donnee->objet))->nom)
599: + 1) * sizeof(unsigned char)))) == NULL)
600: {
601: s_etat_processus->erreur_systeme =
602: d_es_allocation_memoire;
603: return;
604: }
605:
606: strcpy(reinterpret_cast<char *>(argument_1),
607: (const char *) ((struct_variable *)
608: (l_element_courant->donnee->objet))->nom);
609: break;
610: }
611:
612: case 2:
613: {
614: // Valeur
615: if ((argument_3 = conversion_rpl_vers_cas(
616: s_etat_processus,
617: &(l_element_courant->donnee))) == NULL)
618: {
619: s_etat_processus->erreur_systeme =
620: d_es_allocation_memoire;
621: return;
622: }
623:
624: break;
625: }
626:
627: case 3:
628: {
629: // Direction
630:
631: if ((argument_4 = reinterpret_cast<unsigned char *>
632: (malloc((strlen((const char *)
633: ((struct_fonction *) (l_element_courant
634: ->donnee->objet))->nom_fonction)
635: + 1) * sizeof(unsigned char)))) == NULL)
636: {
637: s_etat_processus->erreur_systeme =
638: d_es_allocation_memoire;
639: return;
640: }
641:
642: strcpy(reinterpret_cast<char *>(argument_4),
643: (const char *) ((struct_fonction *)
644: (l_element_courant->donnee->objet))
645: ->nom_fonction);
646: break;
647: }
648: }
649:
650: l_element_courant = (*l_element_courant).suivant;
651: position++;
652: }
653:
654: liberation(s_etat_processus, s_objet_argument_1);
655: liberation(s_etat_processus, s_objet_argument_2);
656:
657: try
658: {
659: int direction;
660:
661: if (argument_4 == NULL)
662: {
663: direction = 0;
664: }
665: else
666: {
667: direction = (strcmp((const char *) argument_4, "+") == 0)
668: ? 1 : -1;
669: }
670:
671: gen expression(
672: string(reinterpret_cast<const char *>(argument_2)),
673: contexte);
674: identificateur variable(
675: string(reinterpret_cast<const char *>(argument_1)));
676: gen valeur(string(reinterpret_cast<const char *>
677: (argument_3)), contexte);
678:
679: gen resultat = limit(expression, variable, valeur, direction,
680: contexte);
681: string chaine = "'" + resultat.print() + "'";
682:
683: conversion_cas_vers_rpl(s_etat_processus,
684: reinterpret_cast<unsigned char *>(const_cast<char *>(
685: chaine.c_str())));
686: }
687: catch(bad_alloc &exception)
688: {
689: s_etat_processus->erreur_systeme = d_es_allocation_memoire;
690: }
691: catch(...)
692: {
693: s_etat_processus->erreur_execution = d_ex_erreur_interne_rplcas;
694: }
695:
696: free(argument_1);
697: free(argument_2);
698: free(argument_3);
699:
700: if (argument_4 != NULL)
701: {
702: free(argument_4);
703: }
704:
705: break;
706: }
707: }
708:
709: return;
710: #else
711:
712: if (s_etat_processus->langue == 'F')
713: {
714: printf("+++Attention : RPL/CAS non compilé !\n");
715: }
716: else
717: {
718: printf("+++Warning : RPL/CAS not available !\n");
719: }
720:
721: fflush(stdout);
722:
723: return;
724:
725: #endif
726: }
727: #pragma GCC diagnostic pop
728:
729: // vim: ts=4
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