1: /* ========================================================================== */
2: /* capaGrammarDef.y created by Isaac Tsai */
3: /* 1998, 1999 copyrighted by Isaac Tsai */
4: /* no longer there is a length constrain on string concatenation July 13 1998 */
5: /* /RMAP() function */
6: /* TODO: new mechanism to collect answer informations */
7: /*****************************************************************************/
8: /*****************************************************************************/
9: /*****************************************************************************/
10: %{
11: #include <stdio.h>
12: #include <ctype.h>
13: #include <string.h>
14: #include <math.h>
15: #include "capaParser.h" /* _symbol structure def */
16: #include "capaCommon.h"
17: #include "capaFunction.h"
18: #include "capaRQO.h"
19: #ifdef __hpux
20: #include <stdlib.h>
21: #include <alloca.h>
22: #endif
23:
24: #ifdef YACC_DBUG
25: #define YYDBUG_PR1(xx) { printf(xx); fflush(stdout); }
26: #define YYDBUG_PR2(xx,yy) { printf(xx,yy); fflush(stdout); }
27: #define YYDBUG_PR3(xx,yy,zz) { printf(xx,yy,zz); fflush(stdout); }
28: #define YYDBUG_PR4(xx,yy,zz,aa) { printf(xx,yy,zz,aa); fflush(stdout); }
29: #define YYDBUG_SYM(xx) { switch((xx)->s_type) { \
30: case IDENTIFIER: \
31: printf("ID(%s)\n",(xx)->s_name); break; \
32: case I_VAR: case I_CONSTANT: \
33: printf("INT(%d)\n",(xx)->s_int); break; \
34: case R_VAR: case R_CONSTANT: \
35: printf("REAL(%.16g)\n",(xx)->s_real); break; \
36: case S_VAR: case S_CONSTANT: \
37: printf("STR(%s)\n",(xx)->s_str); break; \
38: } }
39: #else
40: #define YYDBUG_PR1(xx) { }
41: #define YYDBUG_PR2(xx,yy) { }
42: #define YYDBUG_PR3(xx,yy,zz) { }
43: #define YYDBUG_PR4(xx,yy,zz,aa) { }
44: #define YYDBUG_SYM(xx) { }
45: #endif
46:
47: int yylex();
48: void yyerror(char*);
49: void free_calc_expr(Symbol*);
50: /******************************************************************************/
51: /* GLOBAL VARIABLES */
52: /******************************************************************************/
53: int Lexi_qnum;
54:
55: extern int Lexi_line;
56: extern int Lexi_pos[MAX_OPENED_FILE];
57: extern char Opened_filename[MAX_OPENED_FILE][QUARTER_K];
58: extern int Input_idx;
59: int Current_line[MAX_OPENED_FILE];
60: extern int Func_idx;
61: extern Symbol FuncStack[MAX_FUNC_NEST];
62: extern int IFstatus[MAX_FUNC_NEST];
63: extern int IFcount;
64: extern int gUnitError;
65:
66: int Parsemode_f; /* Parser mode flag */
67:
68: Problem_t *FirstProblem_p; /* First problem */
69: Problem_t *LastProblem_p; /* Last problem */
70: Problem_t *LexiProblem_p; /* Current problem */
71: char *EndText_p;
72: char *StartText_p;
73: char *ErrorMsg_p;
74: int ErrorMsg_count;
75: WarnMsg_t *WarnMsg_p;
76: int WarnMsg_count;
77: int Answer_infospec;
78: void (*Status_Func)();
79: AnswerInfo_t CurrAnsInfo;
80:
81: RandQO_t *QuestionOrder;
82: PointsList_t *CurrPtsList;
83: PointsList_t *LastPtsList;
84:
85:
86:
87:
88: #ifdef YYSTYPE
89: #undef YYSTYPE
90: #endif
91: #define YYSTYPE Symbol_p
92:
93:
94: #define ADD_op 1
95: #define SUB_op 2
96: #define MUL_op 3
97: #define DIV_op 4
98: #define IDIV_op 5
99: #define NOT_DEFINED_op 9
100:
101: /*#define yyerror printf*/
102:
103: %}
104: %token NEW_ID
105: %token I_CONSTANT R_CONSTANT S_CONSTANT
106: %token I_VAR R_VAR S_VAR
107:
108: %token IDENTIFIER FUNCTION_ID ARRAY_ID
109: %token HINT_LINE EXPLAIN_LINE TEXT_LINE IMPORT_LINE
110: %token CAPA_LET CAPA_DEF CAPA_DIS CAPA_END CAPA_VAR
111: %token CAPA_ESC CAPA_MAP CAPA_FIG CAPA_ANS CAPA_RMAP
112: %token CAPA_IF CAPA_ELSE CAPA_ENDIF CAPA_SUBJ CAPA_WHILE
113: %token CAPA_RQO CAPA_ENDWHILE CAPA_START
114: %token ANS_AND ANS_BOX_SHOW ANS_CALC ANS_CI ANS_COMPARE ANS_CS
115: %token ANS_EVAL ANS_EXPLAIN ANS_EXTERNAL ANS_FMT
116: %token ANS_FORMULA ANS_HINT ANS_MC ANS_MINUS
117: %token ANS_OFF ANS_ON ANS_OR ANS_ORDERED
118: %token ANS_PATH ANS_PCREDIT ANS_PLUS ANS_RANGE
119: %token ANS_SHOW_BR ANS_SIG ANS_TOLERANCE ANS_TRY ANS_TYPE
120: %token ANS_UNFMT ANS_UNIT ANS_WEIGHT
121: %token VAR_RANGE VERBATIM
122: %token SLASH FORMAT
123: %token EQ_op NE_op GT_op GE_op LT_op LE_op AND_op OR_op EoL
124:
125: %start prob_set
126:
127: %%
128:
129: prob_set : startQ questions CAPA_END { YYDBUG_PR1(" prob_set := startQ questions END\n\n"); }
130: ;
131:
132: questions : a_line { YYDBUG_PR1(" questions <= a_line");
133: if (Status_Func != NULL) Status_Func();
134: }
135: | questions a_line { YYDBUG_PR1(" questions <= questions a_line");
136: if (Status_Func != NULL) Status_Func();
137: }
138: ;
139:
140: startL : CAPA_LET { YYDBUG_PR1("\n begin_let::"); }
141: ;
142:
143: startV : CAPA_VAR { YYDBUG_PR1(" begin_var"); }
144: ;
145:
146: startA : CAPA_ANS { YYDBUG_PR1("\n START ANSWER(/ANS)::\n");
147: init_answerinfo();
148: }
149: ;
150:
151: startSA : CAPA_SUBJ { YYDBUG_PR1("\n START SUBJECT ANSWER(/SUBJECTIVE)::\n");
152: init_answerinfo();
153: }
154: ;
155:
156: startM : CAPA_MAP { YYDBUG_PR1("\n begin_map::"); }
157: ;
158:
159: startR : CAPA_RMAP { YYDBUG_PR1("\n begin_rmap::"); }
160: ;
161:
162: startRQO : CAPA_RQO { YYDBUG_PR1("\n begin_rqo::"); }
163: ;
164:
165: ans_and_op : ANS_AND { add_answer_cnt(ANS_AND); YYDBUG_PR1("(AND ,new an answer info)"); }
166: ;
167:
168: ans_or_op : ANS_OR { add_answer_cnt(ANS_OR); YYDBUG_PR1("(OR ,new an answer info)"); }
169: ;
170:
171: a_line : startL statement EoL { YYDBUG_PR1(" a_line <= startL statement CR\n"); }
172: | CAPA_END { YYDBUG_PR1(" a_line <= END\n\n"); }
173: | startRQO rqo_def EoL { YYDBUG_PR1(" aline <= CAPA_RQO\n");
174: rqo_finish();
175: }
176: | CAPA_START { YYDBUG_PR1(" aline <= CAPA_START\n");
177: start_question_over();
178: }
179: | HINT_LINE { append_hint($1->s_str);
180: YYDBUG_PR2(" a_line <= Hint_line(%s)\n",$1->s_str);
181: capa_mfree($1->s_str); capa_mfree((char *)$1);
182: }
183: | EXPLAIN_LINE { append_explain($1->s_str);
184: YYDBUG_PR2(" a_line <= Explain_line(%s)\n",$1->s_str);
185: capa_mfree($1->s_str); capa_mfree((char*)$1);
186: }
187: | IMPORT_LINE EoL { YYDBUG_PR1(" a_line <= import_line CR\n"); }
188: | q_text EoL { YYDBUG_PR1(" a_line <= Qtext CR\n"); append_text("\n"); }
189: | answer_expr { YYDBUG_PR1(" a_line <= answer_expr (init a new prob) CR\n");
190: init_new_prob(); }
191: | if_expr { YYDBUG_PR1(" a_line <= if_expr\n"); }
192: | while_expr { YYDBUG_PR1(" a_line <= while_expr\n"); }
193: | map_expr EoL { YYDBUG_PR1(" a_line <= map_expr CR\n"); }
194: | EoL { YYDBUG_PR1(" a_line <= (CR)\n"); }
195: | VERBATIM { YYDBUG_PR1(" a_line <= (VERBATIM)\n");
196: switch(Parsemode_f) {
197: case TeX_MODE: append_text("\\begin{verbatim}");
198: break;
199: case HTML_MODE: append_text("<PRE>");
200: break;
201: }
202: append_text($1->s_str);
203: capa_mfree($1->s_str); capa_mfree((char *)$1);
204: switch(Parsemode_f) {
205: case TeX_MODE: append_text("\\end{verbatim}\n");
206: break;
207: case HTML_MODE: append_text("</PRE>\n");
208: break;
209: }
210: }
211: | error EoL { char warn_msg[WARN_MSG_LENGTH];
212: YYDBUG_PR1(" a_line := ERROR(CR)\n");
213: sprintf(warn_msg," Question %d: Syntax error.\n", Lexi_qnum+1);
214: capa_msg(MESSAGE_ERROR,warn_msg);
215: begin_text();
216: }
217:
218: ;
219:
220: statement : IDENTIFIER '=' calc_expr
221: { char warn_msg[WARN_MSG_LENGTH];
222:
223: if ( $1 != $3 ) { /* /LET a = a */
224: switch($1->s_type) {
225: case IDENTIFIER:
226: case I_VAR: case I_CONSTANT:
227: case R_VAR: case R_CONSTANT: break;
228: case S_VAR: case S_CONSTANT:
229: capa_mfree($1->s_str); $1->s_str = NULL; break;
230: default: break;
231: }
232: switch($3->s_type) {
233: case IDENTIFIER:
234: sprintf(warn_msg,"var \"%s\" not defined before use.\n",$3->s_name);
235: capa_msg(MESSAGE_ERROR,warn_msg);
236: break;
237: case I_VAR: case I_CONSTANT:
238: $1->s_type = I_VAR;
239: $1->s_int = $3->s_int;
240: break;
241: case R_VAR: case R_CONSTANT:
242: $1->s_type = R_VAR;
243: $1->s_real = $3->s_real;
244: break;
245: case S_VAR: case S_CONSTANT:
246: $1->s_type = S_VAR;
247: $1->s_str = strsave($3->s_str);
248: break;
249: }
250: YYDBUG_PR1(" statement <= ID = calc_expr:: "); YYDBUG_SYM($3);
251: free_calc_expr($3);
252: }
253: }
254: | ARRAY_ID '[' calc_expr ']' '=' calc_expr
255: { Symbol *s_p;
256: char warn_msg[WARN_MSG_LENGTH];
257:
258: s_p = get_array_symbol($1,$3,1);
259: switch(s_p->s_type) {
260: case IDENTIFIER:
261: case I_VAR: case I_CONSTANT:
262: case R_VAR: case R_CONSTANT: break;
263: case S_VAR: case S_CONSTANT:
264: capa_mfree(s_p->s_str); s_p->s_str = NULL; break;
265: default: break;
266: }
267: switch($6->s_type) {
268: case IDENTIFIER:
269: sprintf(warn_msg,"var \"%s\" not defined before use.\n",$6->s_name);
270: capa_msg(MESSAGE_ERROR,warn_msg);
271: break;
272: case I_VAR: case I_CONSTANT:
273: s_p->s_type = I_VAR;
274: s_p->s_int = $6->s_int;
275: break;
276: case R_VAR: case R_CONSTANT:
277: s_p->s_type = R_VAR;
278: s_p->s_real = $6->s_real;
279: break;
280: case S_VAR: case S_CONSTANT:
281: s_p->s_type = S_VAR;
282: s_p->s_str = strsave($6->s_str);
283: break;
284: }
285: free_calc_expr($6);
286: }
287: ;
288:
289: rqo_def : rqo_speca { rqo_1spec(); }
290: | rqo_speca "," rqo_def { rqo_2spec(); }
291: ;
292:
293: rqo_speca : an_integer {start_rqo_type(SINGLE);append_rqo($1);}
294: | an_integer "!" {start_rqo_type(IMMOBILE);append_rqo($1);}
295: | an_integer "-" an_integer {start_rqo_type(RANGE);append_rqo($1);
296: append_rqo($3);
297: }
298: | an_integer "~" rqo_specb {prefix_rqo($1);}
299: | an_integer "+" rqo_specc {prefix_rqo($1);}
300: ;
301:
302: rqo_specb : an_integer {start_rqo_type(ALL_MIX);append_rqo($1);}
303: | an_integer "~" rqo_specb {prefix_rqo($1);}
304: | an_integer "+" an_integer {start_rqo_type(LAST_FIXED);append_rqo($1);
305: append_rqo($3);}
306: ;
307:
308: rqo_specc : an_integer {start_rqo_type(ALL_FIXED);append_rqo($1);}
309: | an_integer "+" rqo_specd {prefix_rqo($1);}
310: | an_integer "~" rqo_spece {prefix_rqo($1);}
311: ;
312:
313: rqo_specd : an_integer {start_rqo_type(ALL_FIXED);append_rqo($1);}
314: | an_integer "+" rqo_specd {prefix_rqo($1);}
315: ;
316:
317: rqo_spece : an_integer {start_rqo_type(FIRST_FIXED);append_rqo($1);}
318: | an_integer "~" rqo_spece {prefix_rqo($1);}
319: | an_integer "+" an_integer {start_rqo_type(BOTH_FIXED);append_rqo($1);
320: append_rqo($3);}
321: ;
322:
323:
324: q_text : TEXT_LINE { append_text($1->s_str);
325: capa_mfree($1->s_str); capa_mfree((char *)$1);
326: }
327: | var_expr { }
328: | q_text var_expr { }
329: | q_text TEXT_LINE { append_text($2->s_str);
330: capa_mfree($2->s_str); capa_mfree((char *)$2);
331: }
332: ;
333:
334: if_expr : CAPA_IF '(' calc_expr ')'
335: { int leng=0; /* begin_next_line(); no use, can be get rid of */
336: YYDBUG_PR2("(IF expr <IFcount=%d>)\n",IFcount);
337: switch($3->s_type) {
338: case IDENTIFIER:
339: IFstatus[IFcount] = IF_FALSE;
340: begin_next_line();
341: break;
342: case I_CONSTANT: case I_VAR:
343: if(!$3->s_int) {
344: IFstatus[IFcount] = IF_FALSE;
345: begin_if_skip();
346: } else {
347: IFstatus[IFcount] = IF_TRUE;
348: begin_next_line();
349: }
350: break;
351: case R_CONSTANT: case R_VAR:
352: if($3->s_real == 0.0) {
353: IFstatus[IFcount] = IF_FALSE;
354: begin_if_skip();
355: }else{
356: IFstatus[IFcount] = IF_TRUE;
357: begin_next_line();
358: }
359: break;
360: case S_CONSTANT:
361: if ( $3->s_str) {
362: leng = strlen($3->s_str);
363: capa_mfree($3->s_str);
364: }
365: if(leng == 0) {
366: IFstatus[IFcount] = IF_FALSE;
367: begin_if_skip();
368: }else{
369: IFstatus[IFcount] = IF_TRUE;
370: begin_next_line();
371: }
372: break;
373: case S_VAR:
374: if ( $3->s_str) {
375: leng = strlen($3->s_str);
376: capa_mfree($3->s_str);
377: }
378: if(leng == 0) {
379: IFstatus[IFcount] = IF_FALSE;
380: begin_if_skip();
381: }else{
382: IFstatus[IFcount] = IF_TRUE;
383: begin_next_line();
384: }
385: break;
386: }
387: capa_mfree((char*)$3);
388: }
389: ;
390:
391: while_expr : CAPA_WHILE '(' calc_expr ')'
392: {
393: int leng;
394: YYDBUG_PR1("(WHILE expr)\n");
395: switch($3->s_type) {
396: case IDENTIFIER: /* undefined identifier regarded as false */
397: begin_while_skip();
398: break;
399: case I_CONSTANT: case I_VAR:
400: if(!$3->s_int) {
401: begin_while_skip();
402: } else {
403: begin_next_line(); /* skip to EoL and begin S_TEXT */
404: }
405: break;
406: case R_CONSTANT: case R_VAR:
407: if($3->s_real == 0.0) {
408: begin_while_skip();
409: }else{
410: begin_next_line(); /* skip to EoL and begin S_TEXT */
411: }
412: break;
413: case S_CONSTANT:
414: leng = strlen($3->s_str);
415: capa_mfree($3->s_str);
416: if(leng == 0) {
417: begin_while_skip();
418: }else{
419: begin_next_line(); /* skip to EoL and begin S_TEXT */
420: }
421: break;
422: case S_VAR:
423: leng = strlen($3->s_str);
424: if(leng == 0) {
425: begin_while_skip();
426: }else{
427: begin_next_line(); /* skip to EoL and begin S_TEXT */
428: }
429: break;
430: }
431: capa_mfree((char*)$3);
432: }
433: ;
434:
435: var_expr : startV '(' formated_ans ')'
436: { display_var( $3 ) ; }
437: ;
438:
439: answer_expr : answer_spec { finish_answer_info();
440: }
441: | answer_expr ans_and_op answer_spec
442: { finish_answer_info();
443: YYDBUG_PR1(" answer_expr <-- AND answers (copy answerinfo)\n"); }
444: | answer_expr ans_or_op answer_spec
445: { finish_answer_info();
446: YYDBUG_PR1(" answer_expr <-- OR answers (copy answerinfo)\n");
447: } | startSA '(' answer_info ')'
448: { YYDBUG_PR1("\n subjective answer\n");
449: finish_answer_info();
450: LexiProblem_p->ans_type = ANSWER_IS_SUBJECTIVE;
451: }
452: | startSA '(' ')'
453: { YYDBUG_PR1("\n subjective answer\n");
454: finish_answer_info();
455: LexiProblem_p->ans_type = ANSWER_IS_SUBJECTIVE;
456: }
457:
458: ;
459:
460: answer_spec : startA '(' formated_ans ')'
461: { assign_answer( $3 );
462: YYDBUG_PR1("\nASSIGN Answer\n");
463: }
464: | startA '(' formated_ans ',' answer_info ')'
465: { assign_answer( $3 );
466: YYDBUG_PR1("\nASSIGN Answers + Answer Info\n");
467: }
468: ;
469:
470: answer_info : ans_infospec
471: | answer_info ',' ans_infospec
472: ;
473:
474:
475: ans_infospec : ANS_TOLERANCE '=' a_number
476: { YYDBUG_PR1(" ans_infospec:= TOL=a_number");
477: assign_tolerance(TOL_ABSOLUTE,$3);
478: }
479: | ANS_TOLERANCE '=' IDENTIFIER
480: { assign_tolerance(TOL_ABSOLUTE,$3);
481: }
482: | ANS_TOLERANCE '=' IDENTIFIER '%'
483: { assign_tolerance(TOL_PERCENTAGE,$3);
484: }
485: | ANS_TOLERANCE '=' a_number '%'
486: { assign_tolerance(TOL_PERCENTAGE,$3);
487: }
488: | ANS_COMPARE '=' answer_comp { }
489: | ANS_SIG '=' answer_sig { }
490: | ANS_WEIGHT '=' an_integer
491: { assign_weight( $3 );
492: }
493: | ANS_WEIGHT '=' IDENTIFIER
494: { assign_weight( $3 );
495: }
496: | ANS_HINT '=' an_integer { assign_hint( $3 );
497: }
498: | ANS_HINT '=' IDENTIFIER { assign_hint( $3 );
499: }
500: | ANS_PCREDIT '=' ANS_ON { LexiProblem_p->partial_cdt = 1;
501: }
502: | ANS_PCREDIT '=' ANS_OFF { LexiProblem_p->partial_cdt = 0;
503: }
504: | ANS_SHOW_BR '=' ANS_ON { LexiProblem_p->show_br = DO_SHOW;
505: }
506: | ANS_SHOW_BR '=' ANS_OFF { LexiProblem_p->show_br = DONOT_SHOW;
507: }
508: | ANS_BOX_SHOW '=' ANS_ON { LexiProblem_p->show_ans_box = DO_SHOW;
509: }
510: | ANS_BOX_SHOW '=' ANS_OFF { LexiProblem_p->show_ans_box = DONOT_SHOW;
511: }
512: | ANS_CALC '=' ANS_FMT { CurrAnsInfo.ans_calc = CALC_FORMATED;
513: }
514: | ANS_CALC '=' ANS_UNFMT { CurrAnsInfo.ans_calc = CALC_UNFORMATED;
515: }
516: | ANS_TRY '=' an_integer { assign_try_limits( $3 );
517: }
518: | ANS_TRY '=' IDENTIFIER { assign_try_limits( $3 );
519: }
520: | ANS_UNIT '=' S_CONSTANT { assign_units( $3 ); capa_mfree($3->s_str); capa_mfree((char *)$3);
521: }
522: | ANS_UNIT '=' IDENTIFIER { assign_units( $3 );
523: }
524: | ANS_EVAL '=' var_range { CurrAnsInfo.ans_pts_list = CurrPtsList;
525: CurrPtsList=NULL; LastPtsList = NULL;
526: }
527: ;
528:
529:
530: var_range : '<' S_CONSTANT '@' pt_list '>' { assign_id_list( $2 );
531: capa_mfree($2->s_str);
532: capa_mfree((char *)$2);
533: }
534: | '<' IDENTIFIER '@' pt_list '>' { assign_id_list( $2 ); }
535: ;
536:
537: pt_list : pt_list ',' point_coord { int idx;
538: idx = LastPtsList->pts_idx; idx++;
539: LastPtsList->pts_next = new_ptslist( $3 );
540: LastPtsList = LastPtsList->pts_next;
541: LastPtsList->pts_idx = idx;
542: CurrPtsList->pts_idx = idx;
543: if( $3->s_type == S_CONSTANT ) {
544: capa_mfree($3->s_str); capa_mfree((char *)$3);
545: }
546: }
547: | pt_list ',' pt_range { }
548: | point_coord { CurrPtsList = new_ptslist( $1 );
549: LastPtsList = CurrPtsList;
550: if( $1->s_type == S_CONSTANT ) {
551: capa_mfree($1->s_str); capa_mfree((char *)$1);
552: }
553: }
554: | pt_range { }
555: ;
556:
557: pt_range : point_coord ':' point_coord '#' IDENTIFIER { PointsList_t *pt;
558:
559: if( LastPtsList != NULL ) {
560: LastPtsList->pts_next = gen_ptslist( $1, $3, $5 );
561: pt = LastPtsList->pts_next;
562: while( pt->pts_next != NULL ) {
563: pt = pt->pts_next;
564: }
565: LastPtsList = pt;
566: } else {
567: CurrPtsList = gen_ptslist( $1, $3, $5 );
568: LastPtsList = CurrPtsList;
569: }
570: if( $1->s_type == S_CONSTANT ) {
571: capa_mfree($1->s_str); capa_mfree((char *)$1);
572: }
573: if( $3->s_type == S_CONSTANT ) {
574: capa_mfree($3->s_str); capa_mfree((char *)$3);
575: }
576: }
577: | point_coord ':' point_coord '#' a_number { PointsList_t *pt;
578:
579: if( LastPtsList != NULL ) {
580: LastPtsList->pts_next = gen_ptslist( $1, $3, $5 );
581: pt = LastPtsList->pts_next;
582: while( pt->pts_next != NULL ) {
583: pt = pt->pts_next;
584: }
585: LastPtsList = pt;
586: } else {
587: CurrPtsList = gen_ptslist( $1, $3, $5 );
588: LastPtsList = CurrPtsList;
589: }
590: if( $1->s_type == S_CONSTANT ) {
591: capa_mfree($1->s_str); capa_mfree((char *)$1);
592: }
593: if( $3->s_type == S_CONSTANT ) {
594: capa_mfree($3->s_str); capa_mfree((char *)$3);
595: }
596: if( $5->s_type == I_CONSTANT || $5->s_type == R_CONSTANT) {
597: capa_mfree((char *)$5);
598: }
599: }
600: ;
601:
602:
603: point_coord : IDENTIFIER { $$ = $1; }
604: | S_CONSTANT { $$ = $1; }
605: ;
606:
607:
608:
609: formated_ans : calc_expr { $1->s_distype = DEFAULT_FORMAT;
610: $$ = $1;
611: $1->s_format = NULL;
612: YYDBUG_PR2(" formated_ans := calc_expr (type %d)",$1->s_type);
613: }
614: | calc_expr FORMAT { $1->s_distype = $2->s_distype;
615: $1->s_format = strsave($2->s_str); /* **** */
616: capa_mfree($2->s_str); capa_mfree((char *)$2);
617: $$ = $1;
618: YYDBUG_PR1(" formated_ans <= calc_expr FORMAT");
619: }
620: ;
621:
622:
623:
624: answer_sig : an_integer { assign_sigs( $1->s_int,$1->s_int);
625: capa_mfree((char *)$1);
626: }
627: | an_integer ANS_PLUS an_integer
628: { assign_sigs($1->s_int,$1->s_int + $3->s_int);
629: capa_mfree((char *)$1); capa_mfree((char *)$3);
630: }
631: | an_integer ANS_MINUS an_integer
632: { assign_sigs($1->s_int - $3->s_int,$1->s_int);
633: capa_mfree((char *)$1); capa_mfree((char *)$3);
634: }
635: | an_integer ANS_PLUS an_integer ANS_MINUS an_integer
636: { assign_sigs($1->s_int - $5->s_int,$1->s_int + $3->s_int);
637: capa_mfree((char *)$1); capa_mfree((char *)$3); capa_mfree((char *)$5);
638: }
639: | an_integer ANS_MINUS an_integer ANS_PLUS an_integer
640: { assign_sigs($1->s_int - $3->s_int,$1->s_int + $5->s_int);
641: capa_mfree((char *)$1); capa_mfree((char *)$3); capa_mfree((char *)$5);
642: }
643: ;
644:
645: answer_comp : ANS_CS { CurrAnsInfo.ans_type = ANSWER_IS_STRING_CS; }
646: | ANS_CI { CurrAnsInfo.ans_type = ANSWER_IS_STRING_CI; }
647: | ANS_MC { CurrAnsInfo.ans_type = ANSWER_IS_CHOICE; }
648: | ANS_FORMULA { CurrAnsInfo.ans_type = ANSWER_IS_FORMULA; }
649: | ANS_EXTERNAL { CurrAnsInfo.ans_type = ANSWER_IS_EXTERNAL; }
650: ;
651:
652:
653: map_expr : startM '(' basic_constr ';' var_list ';' arg_list ')'
654: { char key[SMALL_LINE_BUFFER];
655: char warn_msg[WARN_MSG_LENGTH];
656: int result=0;
657:
658: YYDBUG_PR1(" map_expr body executed\n");
659: sprintf(key,"%ld",$3->s_int);
660: if( $5->s_argc == $7->s_argc ) {
661: result=do_map(key, $5->s_argp, $7->s_argp, $5->s_argc, FORWARD_MAP);
662: } else {
663: if ($5->s_argc==1) {
664: Symbol *a_sp;
665: a_sp=build_array_list($5,$7->s_argc);
666: result=do_map(key, a_sp->s_argp, $7->s_argp, a_sp->s_argc, FORWARD_MAP);
667: free_arglist(a_sp->s_argp);
668: } else {
669: sprintf(warn_msg,"/MAP arg. counts are not matched.\n");
670: capa_msg(MESSAGE_ERROR,warn_msg);
671: }
672: }
673: if (result!=0) {
674: sprintf(warn_msg,
675: "/MAP had invalid arguments.\n");
676: capa_msg(MESSAGE_ERROR,warn_msg);
677: }
678: free_arglist($5->s_argp);
679: free_arglist($7->s_argp);
680: }
681: | startR '(' basic_constr ';' var_list ';' arg_list ')'
682: { char key[SMALL_LINE_BUFFER];
683: char warn_msg[WARN_MSG_LENGTH];
684: int result=0;
685:
686: YYDBUG_PR1(" rmap_expr body executed\n");
687: sprintf(key,"%ld",$3->s_int);
688: if( $5->s_argc == $7->s_argc ) {
689: result=do_map(key, $5->s_argp, $7->s_argp, $5->s_argc, REVERSE_MAP);
690:
691: } else {
692: if ($5->s_argc==1) {
693: Symbol *a_sp;
694: a_sp=build_array_list($5,$7->s_argc);
695: result=do_map(key, a_sp->s_argp, $7->s_argp, a_sp->s_argc, FORWARD_MAP);
696: free_arglist(a_sp->s_argp);
697: } else {
698: sprintf(warn_msg,"/RMAP arg. counts are not matched.\n");
699: capa_msg(MESSAGE_ERROR,warn_msg);
700: }
701: }
702: if (result!=0) {
703: sprintf(warn_msg,
704: "/MAP had invalid arguments.\n");
705: capa_msg(MESSAGE_ERROR,warn_msg);
706: }
707: free_arglist($5->s_argp);
708: free_arglist($7->s_argp);
709: }
710: ;
711:
712:
713:
714: calc_expr : calc_expr EQ_op block { $$ = symbols_op($1, $3, EQ_op); }
715: | calc_expr NE_op block { $$ = symbols_op($1, $3, NE_op); }
716: | calc_expr GE_op block { $$ = symbols_op($1, $3, GE_op); }
717: | calc_expr GT_op block { $$ = symbols_op($1, $3, GT_op); }
718: | calc_expr LE_op block { $$ = symbols_op($1, $3, LE_op); }
719: | calc_expr LT_op block { $$ = symbols_op($1, $3, LT_op); }
720: | calc_expr AND_op block { $$ = symbols_op($1, $3, AND_op); }
721: | calc_expr OR_op block { $$ = symbols_op($1, $3, OR_op); }
722: | block { $$ = $1;
723: YYDBUG_PR1(" calc_expr <= block "); YYDBUG_SYM($1); }
724: ;
725:
726: block : block '+' term { $$ = symbols_op($1, $3, ADD_op); YYDBUG_PR1("block <= block '+' term "); YYDBUG_SYM($$); }
727: | block '-' term { $$ = symbols_op($1, $3, SUB_op); }
728: | term { $$ = $1; YYDBUG_PR2(" block <= term YYSTATE(%d) ",yystate); YYDBUG_SYM($1); }
729: ;
730:
731: term : term '*' basic_constr { $$ = symbols_op($1, $3, MUL_op); }
732: | term '/' basic_constr { $$ = symbols_op($1, $3, DIV_op); }
733: | term '%' basic_constr { $$ = symbols_op($1, $3, IDIV_op); }
734: | basic_constr { $$ = $1;
735: YYDBUG_PR1(" term <= basic_constr "); YYDBUG_SYM($1); }
736: ;
737:
738: basic_constr : FUNCTION_ID '(' ')' { int tmp;
739:
740: Func_idx--;
741: if(Func_idx >= 0 ) {
742: tmp = match_function(FuncStack[Func_idx].s_name,0);
743: $$ = do_function(tmp, 0, NULL );
744: capa_mfree(FuncStack[Func_idx].s_name);
745: }
746:
747: }
748: | FUNCTION_ID '(' arg_list ')'
749: { int tmp;
750:
751: Func_idx--;
752: YYDBUG_PR4(" basic_constr <= FUNCTION<%s><argc=%d> YYSTATE(%d) ",
753: FuncStack[Func_idx].s_name,$3->s_argc,yystate);
754:
755: if(Func_idx >= 0 ) {
756: tmp = match_function(FuncStack[Func_idx].s_name,$3->s_argc);
757: $$ = do_function(tmp, $3->s_argc, $3->s_argp);
758: capa_mfree(FuncStack[Func_idx].s_name);
759: free_arglist($3->s_argp);
760: }
761: YYDBUG_PR1(" basic_constr <= RETURN FUNCT "); YYDBUG_SYM($$);
762:
763: }
764: | an_array { $$ = $1; }
765: | IDENTIFIER { /* do not free identifier */
766: $$ = $1;
767: }
768: | '-' basic_constr { $$ = $2;
769: switch($2->s_type) {
770: case I_VAR: $$ = (Symbol *)capa_malloc(sizeof(Symbol),1);
771: $$->s_type = I_CONSTANT;
772: case I_CONSTANT: $$->s_int = - $2->s_int; break;
773: case R_VAR: $$ = (Symbol *)capa_malloc(sizeof(Symbol),1);
774: $$->s_type = R_CONSTANT;
775: case R_CONSTANT: $$->s_real = (-1.0)*($2->s_real);
776: break;
777: case S_VAR:
778: case S_CONSTANT: break;
779: default: break;
780: }
781: }
782: | '+' basic_constr { $$ = $2; }
783: | S_CONSTANT { $$ = $1; }
784: | a_number { $$ = $1; }
785: | '(' calc_expr ')' { $$ = $2; }
786: ;
787:
788: arg_list : arg_list ',' calc_expr { $$ = $1;
789: $$->s_argc++;
790: $$->s_argp = addto_arglist($1->s_argp, $3);
791: }
792: | calc_expr { $$ = $1;
793: $$->s_argc = 1;
794: $$->s_argp = new_arglist($1);
795: }
796: ;
797:
798:
799: var_list : IDENTIFIER { /* do not free identifier */
800: YYDBUG_PR1(" var_list <= ID");
801: $$ = $1;
802: $$->s_argc = 1;
803: $$->s_argp = new_arglist($1);
804: }
805: | ARRAY_ID '[' calc_expr ']'{
806: YYDBUG_PR1(" var_list <= ARRAYID,calc");
807: $$ = get_array_symbol($1,$3,1);
808: $$->s_argc = 1;
809: $$->s_argp = new_arglist($$);
810: }
811: | var_list ',' ARRAY_ID '[' calc_expr ']' {
812: YYDBUG_PR1(" var_list <= var_list,ARRAYID,calc");
813: $$ = $1;
814: $$->s_argc++;
815: $$->s_argp = addto_arglist($1->s_argp,
816: get_array_symbol($3,$5,1));
817: }
818: | var_list ',' IDENTIFIER { /* do not free identifier */
819: YYDBUG_PR1(" var_list <= var_list,ID");
820: $$ = $1;
821: $$->s_argc++;
822: $$->s_argp = addto_arglist($1->s_argp, $3);
823: }
824: ;
825:
826:
827: a_number : an_integer { $$ = $1; }
828: | a_real { $$ = $1; }
829: ;
830:
831: an_integer : I_CONSTANT { $$ = $1; }
832: ;
833:
834: a_real : R_CONSTANT { $$ = $1; }
835: ;
836:
837: an_array : ARRAY_ID '[' calc_expr ']' { $$=get_array_symbol($1,$3,1); }
838: ;
839:
840: startQ : { /* first matching will occur before first line of input text */
841: YYDBUG_PR1(" startQ := begin_question\n");
842: begin_question(); Answer_infospec = 0;
843: }
844: ;
845:
846:
847:
848: %%
849: /* ============================================================================ */
850: ExpNode_p
851: mk_node(op, left, right) int op; ExpNode_p left; ExpNode_p right;
852: {
853: ExpNode *np;
854:
855: np = (ExpNode* )malloc(sizeof(ExpNode));
856: np->e_type = op;
857: np->e_lsibp = left;
858: np->e_rsibp = right;
859: left->e_parentp = np;
860: right->e_parentp = np;
861: return (np);
862: }
863:
864: ExpNode_p
865: mk_leaf(type, valp) int type; Symbol_p valp;
866: {
867: ExpNode *np;
868:
869: np = (ExpNode*)malloc(sizeof(ExpNode));
870: np->e_type = IDENTIFIER;
871: np->e_sp = valp;
872: return (np);
873:
874: }
875:
876: /* ------------------------------------------------------------- */
877: void free_calc_expr(Symbol *expr)
878: {
879: switch(expr->s_type) {
880: case I_CONSTANT:
881: case R_CONSTANT: capa_mfree((char *)expr); break;
882: case S_CONSTANT: capa_mfree(expr->s_str); capa_mfree((char *)expr); break;
883: default: break;
884: }
885: }
886:
887: /* this is the entry point to array symbol retrieval */
888: /* array main name and index are used to locate the symbol */
889: /* name of the array is used to retrieve the array symbol */
890:
891: Symbol* get_array_symbol ( name,index,free_symbols )
892: Symbol *name,*index;int free_symbols;
893: {
894: Symbol *s_p, *a_p;
895: char *key, *tmp;
896: int leng, idx_len;
897: leng = strlen(name->s_name)+8; /* [ ] */
898:
899: switch(index->s_type) {
900: case I_VAR:
901: case I_CONSTANT: tmp = (char *)capa_malloc(64,1);
902: sprintf(tmp,"%ld",index->s_int);
903: break;
904: case R_VAR:
905: case R_CONSTANT: tmp = (char *)capa_malloc(64,1);
906: sprintf(tmp,"%g",index->s_real);
907: break;
908: case S_VAR:
909: case S_CONSTANT: idx_len = strlen(index->s_str); tmp = (char *)capa_malloc(idx_len+4,1);
910: sprintf(tmp,"\"%s\"",index->s_str); /* string array index is a bit different from integer one */
911: break;
912: default: break;
913: }
914: idx_len = strlen(tmp);
915:
916: key = (char *)capa_malloc(idx_len+leng,1);
917: sprintf(key,"%s[%s]",name->s_name,tmp);
918:
919: a_p = find_arrayid(name->s_name); /* use the array name to search array tree */
920: /* */
921: s_p = find_array_by_index(a_p,key); /* use the index portion to search along array linked list */
922: capa_mfree((char *)tmp); capa_mfree((char *)key);
923:
924: if (free_symbols) { /* free both the name symbol and index symbol */
925: if( (index->s_type == I_CONSTANT) || (index->s_type == R_CONSTANT) )
926: capa_mfree((char *)index);
927: if(index->s_type == S_CONSTANT) {
928: capa_mfree(index->s_str); capa_mfree((char *)index);
929: }
930: capa_mfree(name->s_name); capa_mfree((char *)name);
931: }
932: return (s_p);
933: }
934:
935: Symbol * build_array_list(ar_name,num_elem)
936: Symbol *ar_name;int num_elem;
937: {
938: int i;
939: Symbol *arg_list,*a_p;
940: char idx_str[MAX_BUFFER_SIZE];
941:
942: a_p = find_arrayid(ar_name->s_name);
943: i = 1;
944: sprintf(idx_str,"%s[%d]",ar_name->s_name,i); /* create array elements with integer index */
945: arg_list = find_array_by_index(a_p,idx_str); /* will create a new element if not found */
946: arg_list->s_argc=1;
947: arg_list->s_argp=new_arglist(arg_list);
948:
949: for (i=2;i<=num_elem;i++) {
950: sprintf(idx_str,"%s[%d]",ar_name->s_name,i);
951: arg_list->s_argc++;
952: arg_list->s_argp=addto_arglist(arg_list->s_argp,find_array_by_index(a_p,idx_str));
953: }
954: return arg_list;
955: }
956:
957:
958:
959:
960:
961:
962:
963: /* ------------------------------------------------------------- */
964: void
965: append_text(str) char *str;
966: {
967: char *q;
968: int i;
969:
970: if (!LexiProblem_p->question) {
971: if (!(q = capa_malloc(strlen(str)+1,1))) printf("No room to append.");
972: strncpy(q,str,strlen(str)+1);
973: } else {
974: i = strlen(LexiProblem_p->question);
975: i += (strlen(str)+1);
976: q = capa_malloc(i,1); /* *** */
977: if (!q) printf("No room to append().");
978: strcat(strncpy(q,LexiProblem_p->question, strlen(LexiProblem_p->question)+1), str);
979: capa_mfree(LexiProblem_p->question);
980: }
981: LexiProblem_p->question=q;
982: }
983:
984: /******************************************************************************/
985: /* ADD A STRING TO THE CURRENT HINT TEXT BLOCK */
986: /******************************************************************************/
987: void /* RETURNS: nothing */
988: append_hint(str) /* ARGUMENTS: */
989: char *str; /* String to add */
990: { /* LOCAL VARIABLES: */
991: char *q; /* New string */
992:
993: if (!LexiProblem_p->hint) {
994: if (!(q = capa_malloc(strlen(str)+1,1)))
995: printf("no room");
996: strncpy(q,str,strlen(str)+1);
997: } else {
998: if (!(q = capa_malloc(strlen(LexiProblem_p->hint)+strlen(str)+1,1)))
999: printf("no room");
1000: strcat(strncpy(q,LexiProblem_p->hint,strlen(LexiProblem_p->hint)), str);
1001: capa_mfree(LexiProblem_p->hint);
1002: }
1003: LexiProblem_p->hint=q;
1004: /* printf("APPEND HINT: %s\n", str); */
1005: }
1006: /******************************************************************************/
1007: /* ADD A STRING TO THE CURRENT EXPLAIN TEXT BLOCK */
1008: /******************************************************************************/
1009: void /* RETURNS: nothing */
1010: append_explain(str) /* ARGUMENTS: */
1011: char *str; /* String to add */
1012: { /* LOCAL VARIABLES: */
1013: char *q; /* New string */
1014:
1015: if (!LexiProblem_p->explain) {
1016: if (!(q = capa_malloc(strlen(str)+1,1)))
1017: printf("no room");
1018: strncpy(q,str, strlen(str)+1);
1019: } else {
1020: if (!(q = capa_malloc(strlen(LexiProblem_p->explain)+strlen(str)+1,1)))
1021: printf("no room");
1022: strcat(strncpy(q,LexiProblem_p->explain,strlen(LexiProblem_p->explain)+1), str);
1023: capa_mfree(LexiProblem_p->explain);
1024: }
1025: LexiProblem_p->explain=q;
1026: /* printf("APPEND EXPLAIN: %s\n", str); */
1027: }
1028:
1029: void
1030: append_error(str) char *str;
1031: {
1032: char *q;
1033: int i;
1034:
1035: ErrorMsg_count++;
1036: if (!ErrorMsg_p) {
1037: if (!(q = capa_malloc(strlen(str)+1,1))) printf("No room in append.");
1038: strncpy(q,str,strlen(str)+1);
1039: } else {
1040: i = strlen(ErrorMsg_p);
1041: i += (strlen(str)+1);
1042: q = capa_malloc(i,1); /* *** */
1043: if (!q) printf("No room in append()");
1044: strcat(strncpy(q,ErrorMsg_p, strlen(ErrorMsg_p)+1), str);
1045: capa_mfree(ErrorMsg_p);
1046: }
1047: ErrorMsg_p=q;
1048: /* printf("APPEND ERROR: %s\n", str); */
1049: }
1050: void
1051: append_warn(type,str) int type;char *str;
1052: {
1053: WarnMsg_t *p, *t;
1054: char *q;
1055:
1056: WarnMsg_count++;
1057: if (!WarnMsg_p) {
1058: if (!(p = (WarnMsg_t *)capa_malloc(sizeof(WarnMsg_t),1))) printf("No room in create WarnMsg_t.");
1059: if (!(q = capa_malloc(strlen(str)+1,1))) printf("No room in allocating space for warn msg.");
1060: strncpy(q,str,strlen(str)+1);
1061: p->warn_next = NULL;
1062: p->warn_type = type;
1063: p->warn_str = q;
1064: WarnMsg_p=p;
1065: } else {
1066: for(t=WarnMsg_p;t->warn_next;t=t->warn_next) { } /* do nothing within for loop */
1067: if (!(p = (WarnMsg_t *)capa_malloc(sizeof(WarnMsg_t),1))) printf("No room in create WarnMsg_t.");
1068: if (!(q = capa_malloc(strlen(str)+1,1))) printf("No room in allocating space for warn msg.");
1069: strncpy(q,str,strlen(str)+1);
1070: p->warn_next = NULL;
1071: p->warn_type = type;
1072: p->warn_str = q;
1073: t->warn_next = p;
1074: }
1075: }
1076:
1077: /*****************************************************************************/
1078: /*********** if *b is a constant symbol, destroy (free) b ********************/
1079: /*********** if *a is a var symbol, create a new symbol **********************/
1080: /* do not free(*a) */
1081: /* */
1082: Symbol *
1083: symbols_op(a, b, op) Symbol *a; Symbol *b; int op;
1084: {
1085: int type, new, leng;
1086: long tmp_i, tmp_j;
1087: double tmp_p, tmp_q;
1088: char a_str[QUARTER_K], *b_str=NULL, *r_strp;
1089: char warn_msg[ONE_K];
1090: Symbol *a_symp;
1091:
1092: if( a->s_type == IDENTIFIER || b->s_type == IDENTIFIER ) {
1093: if(a->s_type == IDENTIFIER) { /* a is IDENTIFIER */
1094: sprintf(warn_msg,"var \"%s\" not defined before use.\n", a->s_name);
1095: capa_msg(MESSAGE_ERROR,warn_msg);
1096: return (b);
1097: } else { /* b is IDENTIFIER */
1098: sprintf(warn_msg,
1099: "var \"%s\" not defined before use.\n",b->s_name);
1100: capa_msg(MESSAGE_ERROR,warn_msg);
1101: return (a);
1102: }
1103: } else { /* a and b are neither identifiers */
1104: if( (a->s_type == I_VAR) ||
1105: (a->s_type == R_VAR) ||
1106: (a->s_type == S_VAR) ) {
1107: a_symp = (Symbol *)capa_malloc(sizeof(Symbol),1); /* *** */
1108: new = 1;
1109: } else {
1110: new = 0;
1111: a_symp = a; /* re-use symbol *a */
1112: }
1113: if( ((a->s_type == I_CONSTANT)||(a->s_type == I_VAR)) &&
1114: ((b->s_type == I_CONSTANT)||(b->s_type == I_VAR)) ) { /* both a and b are integer */
1115: type = I_CONSTANT;
1116: switch( op ) {
1117: case ADD_op: a_symp->s_int = a->s_int + b->s_int ; break;
1118: case SUB_op: a_symp->s_int = a->s_int - b->s_int ; break;
1119: case MUL_op: a_symp->s_int = a->s_int * b->s_int ; break;
1120: case DIV_op: if(b->s_int != 0) {
1121: a_symp->s_int = a->s_int / b->s_int ;
1122: } else {
1123: sprintf(warn_msg,"division (/) by zero!\n");
1124: capa_msg(MESSAGE_ERROR,warn_msg);
1125: } break;
1126: case IDIV_op: if(b->s_int != 0) {
1127: a_symp->s_int = (a->s_int % b->s_int );
1128: } else {
1129: sprintf(warn_msg,"integer division (%%) by zero!\n");
1130: capa_msg(MESSAGE_ERROR,warn_msg);
1131: } break;
1132: case EQ_op: a_symp->s_int = ((a->s_int == b->s_int)? 1: 0); break;
1133: case NE_op: a_symp->s_int = ((a->s_int == b->s_int)? 0: 1); break;
1134: case GT_op: a_symp->s_int = ((a->s_int > b->s_int)? 1: 0); break;
1135: case GE_op: a_symp->s_int = ((a->s_int >= b->s_int)? 1: 0); break;
1136: case LT_op: a_symp->s_int = ((a->s_int < b->s_int)? 1: 0); break;
1137: case LE_op: a_symp->s_int = ((a->s_int <= b->s_int)? 1: 0); break;
1138: case AND_op: a_symp->s_int = ((a->s_int && b->s_int)? 1: 0); break;
1139: case OR_op: a_symp->s_int = ((a->s_int || b->s_int)? 1: 0); break;
1140: }
1141: } else { /* a, b neither are integers */
1142: if( (a->s_type == S_VAR) || (a->s_type == S_CONSTANT) ||
1143: (b->s_type == S_VAR) || (b->s_type == S_CONSTANT) ) { /* either a or b is a string */
1144: type = S_CONSTANT; /* the return type is a string */
1145: if( (a->s_type == S_VAR) || (a->s_type == S_CONSTANT) ) { /* a is a string */
1146: if (a->s_str == NULL ||
1147: (((b->s_type == S_VAR) || (b->s_type == S_CONSTANT)) && b->s_str == NULL)) {
1148: if (a->s_str == NULL) {
1149: sprintf(warn_msg,"variable %s has not yet been assigned a value.\n",a->s_name);
1150: capa_msg(MESSAGE_ERROR,warn_msg);
1151: }
1152: if (((b->s_type == S_VAR) || (b->s_type == S_CONSTANT)) && b->s_str == NULL) {
1153: sprintf(warn_msg,"variable %s has not yet been assigned a value.\n",a->s_name);
1154: capa_msg(MESSAGE_ERROR,warn_msg);
1155: }
1156: } else { /* a is a valid string */
1157: switch( b->s_type ) {
1158: case I_VAR:
1159: case I_CONSTANT:
1160: leng = SMALL_LINE_BUFFER; /* assuming a long integer does not exceed 128 digits*/
1161: b_str= capa_malloc(sizeof(char), leng);
1162: sprintf(b_str,"%ld", b->s_int);
1163: break;
1164: case R_VAR:
1165: case R_CONSTANT:
1166: leng = SMALL_LINE_BUFFER;/*assuming a double does not exceed128chars*/
1167: b_str= capa_malloc(sizeof(char), leng);
1168: sprintf(b_str,"%.15g", b->s_real);
1169: break;
1170: case S_VAR:
1171: case S_CONSTANT: /* DONE: get rid of limitations on b_str[] */
1172: leng = strlen( b->s_str ) + 1;
1173: b_str= capa_malloc(sizeof(char), leng);
1174: sprintf(b_str,"%s",b->s_str);
1175: /*if(b->s_type == S_CONSTANT) capa_mfree(b->s_str);*/
1176: break;
1177: }
1178: switch( op ) {
1179: case ADD_op:
1180: leng = strlen( a->s_str ) + strlen(b_str) + 1;
1181: r_strp = capa_malloc(sizeof(char), leng); /* **** */
1182: strcat(r_strp, a->s_str);
1183: strcat(r_strp, b_str); /* concatenate two strings together */
1184: if( !new ) capa_mfree(a->s_str);
1185: a_symp->s_str = r_strp;
1186: break;
1187: case SUB_op:
1188: case MUL_op:
1189: case DIV_op:
1190: case IDIV_op:
1191: if( !new ) capa_mfree(a->s_str);
1192: a_symp->s_str = strsave("<<Op NOT DEFINED>>");
1193: sprintf(warn_msg,"integer division (%%) cannot accept string operand!\n");
1194: capa_msg(MESSAGE_ERROR,warn_msg);
1195: break;
1196: case EQ_op: a_symp->s_int = (strcmp(a->s_str, b_str) == 0? 1: 0);
1197: type = I_CONSTANT; break;
1198: case NE_op: a_symp->s_int = (strcmp(a->s_str, b_str) == 0? 0: 1);
1199: type = I_CONSTANT; break;
1200: case GT_op: a_symp->s_int = (strcmp(a->s_str, b_str) > 0? 1: 0);
1201: type = I_CONSTANT; break;
1202: case GE_op: a_symp->s_int = (strcmp(a->s_str, b_str) >= 0? 1: 0);
1203: type = I_CONSTANT; break;
1204: case LT_op: a_symp->s_int = (strcmp(a->s_str, b_str) < 0? 1: 0);
1205: type = I_CONSTANT; break;
1206: case LE_op: a_symp->s_int = (strcmp(a->s_str, b_str) <= 0? 1: 0);
1207: type = I_CONSTANT; break;
1208: case AND_op:
1209: if( (a->s_str[0] != 0) && (b_str[0] != 0)) {
1210: a_symp->s_int = 1;
1211: } else {
1212: a_symp->s_int = 0;
1213: }
1214: type = I_CONSTANT; break;
1215: case OR_op:
1216: if( (a->s_str[0] != 0) || (b_str[0] != 0)) {
1217: a_symp->s_int = 1;
1218: } else {
1219: a_symp->s_int = 0;
1220: }
1221: type = I_CONSTANT; break;
1222: }
1223: }
1224: if (b_str!=NULL) capa_mfree(b_str);
1225: } else { /* b is string and a is either integer or real */
1226: switch( a->s_type ) {
1227: case I_VAR:
1228: case I_CONSTANT:
1229: sprintf(a_str,"%ld", a->s_int); break;
1230: case R_VAR:
1231: case R_CONSTANT:
1232: sprintf(a_str,"%.15g", a->s_real); break;
1233: }
1234: switch( op ) {
1235: case ADD_op:
1236: leng = strlen( b->s_str ) + strlen(a_str) + 1;
1237: r_strp = capa_malloc(sizeof(char), leng); /* *** */
1238: strcat(r_strp, a_str);
1239: strcat(r_strp, b->s_str);
1240: /*if( b->s_type == S_CONSTANT ) capa_mfree(b->s_str);*/
1241: a_symp->s_str = r_strp; break;
1242: case SUB_op:
1243: case MUL_op:
1244: case DIV_op:
1245: case IDIV_op:
1246: a_symp->s_str = strsave("<<Op NOT DEFINED>>");
1247: sprintf(warn_msg,"integer division (%%) cannot accept string operand!\n");
1248: capa_msg(MESSAGE_ERROR,warn_msg);
1249: break;
1250: case EQ_op: a_symp->s_int = (strcmp(a_str, b->s_str) == 0? 1: 0);
1251: type = I_CONSTANT; break;
1252: case NE_op: a_symp->s_int = (strcmp(a_str, b->s_str) == 0? 0: 1);
1253: type = I_CONSTANT; break;
1254: case GT_op: a_symp->s_int = (strcmp(a_str, b->s_str) > 0? 1: 0);
1255: type = I_CONSTANT; break;
1256: case GE_op: a_symp->s_int = (strcmp(a_str, b->s_str) >= 0? 1: 0);
1257: type = I_CONSTANT; break;
1258: case LT_op: a_symp->s_int = (strcmp(a_str, b->s_str) < 0? 1: 0);
1259: type = I_CONSTANT; break;
1260: case LE_op: a_symp->s_int = (strcmp(a_str,b->s_str) <= 0? 1: 0);
1261: type = I_CONSTANT; break;
1262: case AND_op: if( (a_str[0] != 0) && (b->s_str[0] != 0)) {
1263: a_symp->s_int = 1;
1264: } else {
1265: a_symp->s_int = 0;
1266: }
1267: type = I_CONSTANT; break;
1268: case OR_op: if( (a_str[0] != 0) || (b_str[0] != 0)) {
1269: a_symp->s_int = 1;
1270: } else {
1271: a_symp->s_int = 0;
1272: }
1273: type = I_CONSTANT; break;
1274: }
1275: }
1276:
1277: } else { /* both a and b are real */
1278: type = R_CONSTANT;
1279: if( (a->s_type == R_CONSTANT)||(a->s_type == R_VAR) ) {
1280: tmp_p = a->s_real;
1281: } else {
1282: tmp_p = (double)a->s_int;
1283: }
1284: if( (b->s_type == R_CONSTANT)||(b->s_type == R_VAR) ) {
1285: tmp_q = b->s_real;
1286: } else {
1287: tmp_q = (double)b->s_int;
1288: }
1289: switch( op ) {
1290: case ADD_op: a_symp->s_real = tmp_p + tmp_q ; break;
1291: case SUB_op: a_symp->s_real = tmp_p - tmp_q ; break;
1292: case MUL_op: a_symp->s_real = tmp_p * tmp_q ; break;
1293: case DIV_op: if(tmp_q != 0.0) {
1294: a_symp->s_real = tmp_p / tmp_q ;
1295: } else {
1296: /* printf("FDIVISION by ZERO\n"); */
1297: sprintf(warn_msg,"division (/) by zero!\n");
1298: capa_msg(MESSAGE_ERROR,warn_msg);
1299: }
1300: break;
1301: case IDIV_op: if(tmp_q != 0.0 ) {
1302: tmp_i = (long)tmp_p;
1303: tmp_j = (long)tmp_q;
1304: a_symp->s_int = tmp_i % tmp_j;
1305: type = I_CONSTANT;
1306: } else {
1307: /* printf("DIVISION by ZERO\n"); */
1308: sprintf(warn_msg,"division (/) by zero!\n");
1309: capa_msg(MESSAGE_ERROR,warn_msg);
1310: }
1311: break;
1312: case EQ_op: type = I_CONSTANT;
1313: a_symp->s_int = ((tmp_p == tmp_q)? 1: 0); break;
1314: case NE_op: type = I_CONSTANT;
1315: a_symp->s_int = ((tmp_p == tmp_q)? 0: 1); break;
1316: case GT_op: type = I_CONSTANT;
1317: a_symp->s_int = ((tmp_p > tmp_q)? 1: 0); break;
1318: case GE_op: type = I_CONSTANT;
1319: a_symp->s_int = ((tmp_p >= tmp_q)? 1: 0); break;
1320: case LT_op: type = I_CONSTANT;
1321: a_symp->s_int = ((tmp_p < tmp_q)? 1: 0); break;
1322: case LE_op: type = I_CONSTANT;
1323: a_symp->s_int = ((tmp_p <= tmp_q)? 1: 0); break;
1324: case AND_op: type = I_CONSTANT;
1325: a_symp->s_int = ((tmp_p && tmp_q)? 1: 0); break;
1326: case OR_op: type = I_CONSTANT;
1327: a_symp->s_int = ((tmp_p || tmp_q)? 1: 0); break;
1328: }
1329: }
1330: }
1331: if( (b->s_type == I_CONSTANT) ||
1332: (b->s_type == R_CONSTANT) ) capa_mfree((char *)b); /* free symbol *b only */
1333: if( (b->s_type == S_CONSTANT) ) {
1334: capa_mfree((char *)b->s_str);
1335: capa_mfree((char *)b);
1336: }
1337: a_symp->s_type = type;
1338: return (a_symp);
1339: }
1340: }
1341:
1342: /* ------------------------------------------------------ */
1343: char *
1344: format_toTeX( real ) char *real;
1345: {
1346: int idx, length, fraclength, i_exp;
1347: char *expo_p, fracS[SMALL_LINE_BUFFER], result[ONE_K], *areal;
1348: char warn_msg[WARN_MSG_LENGTH];
1349:
1350: length = strlen(real);
1351: if( index( real, 'e' ) == NULL ) {
1352: if( index( real, 'E' ) == NULL ) {
1353: sprintf(result,"%s", real);
1354: } else {
1355: expo_p = index(real, 'E'); /*** hpux complained */
1356: fraclength = length - strlen(expo_p);
1357: expo_p++; if(expo_p[0] == '+') expo_p++;
1358: sscanf(expo_p,"%d",&i_exp);
1359: for(idx=0;idx<fraclength;idx++) fracS[idx] = real[idx];
1360: fracS[fraclength] = 0;
1361: if(i_exp == 0 ) {
1362: sprintf(result,"$%s$", fracS);
1363: } else {
1364: sprintf(result,"$%s \\times 10^{%d}$", fracS, i_exp);
1365: }
1366: }
1367: } else {
1368: if( index( real, 'E' ) == NULL ) {
1369: expo_p = index(real, 'e'); /*** hpux complained */
1370: fraclength = length - strlen(expo_p);
1371: expo_p++; if(expo_p[0] == '+') expo_p++;
1372: sscanf(expo_p,"%d",&i_exp);
1373: for(idx=0;idx<fraclength;idx++) fracS[idx] = real[idx];
1374: fracS[fraclength] = 0;
1375: if(i_exp == 0 ) {
1376: sprintf(result,"$%s$", fracS);
1377: } else {
1378: sprintf(result,"$%s \\times 10^{%d}$", fracS, i_exp);
1379: }
1380: } else {
1381: sprintf(result,"<<Ill-formed REAL>>");
1382: sprintf(warn_msg,"number %s is not a valid real number!\n",real);
1383: capa_msg(MESSAGE_ERROR,warn_msg);
1384: }
1385: }
1386: areal = (char *) capa_malloc(strlen(result)+1, 1);
1387: strcpy(areal,result);
1388: return (areal);
1389: }
1390: /* ------------------------------------------------------ */
1391: char *
1392: format_toHTML( real ) char *real;
1393: {
1394: int idx, length, fraclength, i_exp;
1395: char *expo_p, fracS[SMALL_LINE_BUFFER], result[ONE_K], *areal;
1396: char warn_msg[WARN_MSG_LENGTH];
1397:
1398: length = strlen(real);
1399: if( index( real, 'e' ) == NULL ) {
1400: if( index( real, 'E' ) == NULL ) {
1401: sprintf(result,"%s", real);
1402: } else {
1403: expo_p = index(real, 'E'); /*** hpux complained */
1404: fraclength = length - strlen(expo_p);
1405: expo_p++; if(expo_p[0] == '+') expo_p++;
1406: sscanf(expo_p,"%d",&i_exp);
1407: for(idx=0;idx<fraclength;idx++) fracS[idx] = real[idx];
1408: fracS[fraclength] = 0;
1409: if(i_exp == 0 ) {
1410: sprintf(result,"%s", fracS);
1411: } else {
1412: sprintf(result,"%s×10<sup>%d</sup>", fracS, i_exp); /* × is code for x */
1413: }
1414: }
1415: } else { /* the string contains 'e' char */
1416: if( index( real, 'E' ) == NULL ) {
1417: expo_p = index(real, 'e'); /*** hpux complained */
1418: fraclength = length - strlen(expo_p);
1419: expo_p++; if(expo_p[0] == '+') expo_p++;
1420: sscanf(expo_p,"%d",&i_exp);
1421: for(idx=0;idx<fraclength;idx++) fracS[idx] = real[idx];
1422: fracS[fraclength] = 0;
1423: if(i_exp == 0 ) {
1424: sprintf(result,"%s", fracS);
1425: } else {
1426: sprintf(result,"%s×10<sup>%d</sup>", fracS, i_exp); /* × is code for x */
1427: }
1428: } else {
1429: sprintf(result,"<<Ill-formed REAL>>");
1430: sprintf(warn_msg,"number %s is not a valid real number!\n",real);
1431: capa_msg(MESSAGE_ERROR,warn_msg);
1432: }
1433: }
1434: areal = (char *) capa_malloc(strlen(result)+1, 1);
1435: strcpy(areal,result);
1436: return (areal);
1437: }
1438: /* -- This routine is called when a /ANS is encountered -- */
1439: void
1440: init_answerinfo()
1441: {
1442:
1443: CurrAnsInfo.ans_str = NULL;
1444: CurrAnsInfo.ans_type = 0;
1445: CurrAnsInfo.ans_calc = CALC_DEFAULT;
1446: CurrAnsInfo.ans_tol_type = TOL_ABSOLUTE;
1447: CurrAnsInfo.ans_tol = TOL_DEFAULT;
1448: CurrAnsInfo.ans_sig_ub = SIG_UB_DEFAULT;
1449: CurrAnsInfo.ans_sig_lb = SIG_LB_DEFAULT;
1450: CurrAnsInfo.ans_id_list = NULL;
1451: CurrAnsInfo.ans_pts_list = NULL;
1452: CurrAnsInfo.ans_fmt[0] = '\0';
1453: CurrAnsInfo.ans_unit_str[0] = '\0';
1454: CurrAnsInfo.ans_unit = NULL;
1455: CurrAnsInfo.ans_next = NULL;
1456: }
1457: /* when encountered a /DIS(variable) */
1458: void
1459: display_var( s )Symbol *s;
1460: {
1461: char *aline;
1462: char *tmp_p;
1463: char warn_msg[WARN_MSG_LENGTH];
1464:
1465:
1466: switch(s->s_type) {
1467: case IDENTIFIER:
1468: aline = (char *)capa_malloc(sizeof(char)*ONE_K,1);
1469: sprintf(aline,"VAR \"%s\" NOT DEFINED!", s->s_name);
1470: sprintf(warn_msg,"display var \"%s\" not defined before use.\n",s->s_name);
1471: capa_msg(MESSAGE_ERROR,warn_msg);
1472: break;
1473: case I_VAR: case I_CONSTANT:
1474: aline = (char *)capa_malloc(sizeof(char)*ONE_K,1);
1475: sprintf(aline, "%ld", s->s_int);
1476: break;
1477: case R_VAR: case R_CONSTANT:
1478: aline = (char *)capa_malloc(sizeof(char)*ONE_K,1);
1479: if(Parsemode_f == TeX_MODE) {
1480: if(s->s_distype == DEFAULT_FORMAT ) {
1481: sprintf(aline,"%.15g",s->s_real);
1482: } else {
1483: sprintf(aline,s->s_format,s->s_real);
1484: }
1485: tmp_p = format_toTeX(aline);
1486: sprintf(aline,"%s",tmp_p);
1487: capa_mfree( (char *)tmp_p);
1488:
1489: } else {
1490: if(Parsemode_f == HTML_MODE ) {
1491: if(s->s_distype == DEFAULT_FORMAT ) {
1492: sprintf(aline,"%.15g",s->s_real);
1493: } else {
1494: sprintf(aline,s->s_format,s->s_real);
1495: }
1496: tmp_p = format_toHTML(aline);
1497: sprintf(aline,"%s",tmp_p);
1498: capa_mfree( (char *)tmp_p);
1499: } else {
1500: if(s->s_distype == DEFAULT_FORMAT ) {
1501: sprintf(aline,"%.15g",s->s_real);
1502: } else {
1503: sprintf(aline,s->s_format,s->s_real);
1504: }
1505: }
1506: }
1507: break;
1508: case S_VAR: case S_CONSTANT:
1509: if (s->s_str == NULL) {
1510: sprintf(warn_msg,"variable %s has not yet been assigned a value.\n",
1511: s->s_name);
1512: capa_msg(MESSAGE_ERROR,warn_msg);
1513: aline=(char *)capa_malloc(9,1);
1514: sprintf(aline,"NO VALUE");
1515: } else {
1516: aline = (char *)capa_malloc(strlen(s->s_str)+1,1);
1517: sprintf(aline,"%s",s->s_str);
1518: }
1519: break;
1520: }
1521: append_text(aline);
1522: capa_mfree((char *)aline);
1523: if(s->s_format) { capa_mfree((char *)s->s_format); }
1524: s->s_format = NULL;
1525: switch(s->s_type) { /* free up spaces taken by constants */
1526: case I_CONSTANT:
1527: case R_CONSTANT: capa_mfree((char *)s); break;
1528: case S_CONSTANT: capa_mfree(s->s_str); capa_mfree((char *)s); break;
1529: default: break;
1530: }
1531:
1532: }
1533:
1534: /* Assign the correct answer to CurrAnsInfo first */
1535: void
1536: assign_answer( s ) Symbol *s;
1537: {
1538: char aline[QUARTER_K];
1539: char warn_msg[WARN_MSG_LENGTH];
1540:
1541: /*problem_default(LexiProblem_p);*/
1542: switch(s->s_type) {
1543: case IDENTIFIER:
1544: sprintf(warn_msg,"File %s, Line %3d: in /ANS, var %s not defined before use.\n",
1545: Opened_filename[Input_idx],Current_line[Input_idx],s->s_name);
1546: capa_msg(MESSAGE_ERROR,warn_msg);
1547: CurrAnsInfo.ans_str = strsave("ANSWER NOT DEFINED!");
1548: CurrAnsInfo.ans_type = ANSWER_IS_STRING_CI;
1549: sprintf(CurrAnsInfo.ans_fmt,"%%s");
1550: if (CurrAnsInfo.ans_tol == 0.0) {
1551: sprintf(warn_msg, "File %s, Line %3d: answer has a numerical value of %ld and an implicit zero tolerance.\n",
1552: Opened_filename[Input_idx],Current_line[Input_idx],s->s_int);
1553: capa_msg(MESSAGE_WARN,warn_msg);
1554: }
1555: break;
1556: case I_VAR: case I_CONSTANT:
1557: sprintf(aline, "%ld", s->s_int);
1558: CurrAnsInfo.ans_str = strsave(aline);
1559: CurrAnsInfo.ans_type = ANSWER_IS_INTEGER;
1560: sprintf(CurrAnsInfo.ans_fmt,"%%ld");
1561: break;
1562: case R_VAR: case R_CONSTANT:
1563: if(s->s_distype == DEFAULT_FORMAT ) {
1564: sprintf(aline,"%.15g",s->s_real);
1565: sprintf(CurrAnsInfo.ans_fmt,"%%.15g");
1566: } else {
1567: sprintf(aline,"%.15g",s->s_real);
1568: strcpy(CurrAnsInfo.ans_fmt,s->s_format);
1569: }
1570: CurrAnsInfo.ans_str = strsave(aline);
1571: CurrAnsInfo.ans_type = ANSWER_IS_FLOAT;
1572: if( CurrAnsInfo.ans_tol == 0.0 ) {
1573: sprintf(warn_msg,"File %s, Line %3d: answer has a numerical value of %s and a zero tolerance.\n",
1574: Opened_filename[Input_idx],Current_line[Input_idx],aline);
1575: capa_msg(MESSAGE_WARN,warn_msg);
1576: }
1577: break;
1578: case S_VAR: case S_CONSTANT:
1579: CurrAnsInfo.ans_str = strsave(s->s_str);
1580: if (s->s_str!=NULL && (strlen(s->s_str)>ANSWER_STRING_LENG-1)) {
1581: sprintf(warn_msg,"File %s, Line %3d: answer is too long, max allowed length is %d, current answer is %d\n",
1582: Opened_filename[Input_idx],Current_line[Input_idx],
1583: ANSWER_STRING_LENG-1, strlen(s->s_str));
1584: capa_msg(MESSAGE_ERROR,warn_msg);
1585: CurrAnsInfo.ans_str[ANSWER_STRING_LENG-1]='\0';
1586: }
1587: if ( !CurrAnsInfo.ans_type ) { /* not yet specified by str= answer info */
1588: CurrAnsInfo.ans_type = ANSWER_IS_STRING_CI;
1589: }
1590: sprintf(CurrAnsInfo.ans_fmt,"%%s");
1591: break;
1592: }
1593: if(s->s_format) {
1594: capa_mfree((char *)s->s_format);
1595: }
1596: s->s_format = NULL;
1597: switch(s->s_type) {
1598: case I_CONSTANT:
1599: case R_CONSTANT: capa_mfree((char *)s); break;
1600: case S_CONSTANT: capa_mfree(s->s_str); capa_mfree((char *)s); break;
1601: default: break;
1602: }
1603:
1604: }
1605:
1606: /* Assign tolerance to CurrAnsInfo first */
1607: void
1608: assign_tolerance(tol_type, s) int tol_type; Symbol *s;
1609: {
1610: char warn_msg[WARN_MSG_LENGTH];
1611:
1612: CurrAnsInfo.ans_tol_type = tol_type;
1613: switch( s->s_type ) {
1614: case IDENTIFIER:
1615: sprintf(warn_msg,"TOL = var, \"%s\" not defined before use.\n",s->s_name);
1616: capa_msg(MESSAGE_ERROR,warn_msg);
1617: CurrAnsInfo.ans_tol = 0.0;
1618: break;
1619: case I_VAR: case I_CONSTANT:
1620: CurrAnsInfo.ans_tol =(double)s->s_int;
1621: break;
1622: case R_VAR: case R_CONSTANT:
1623: CurrAnsInfo.ans_tol = s->s_real;
1624: break;
1625: case S_VAR: case S_CONSTANT: CurrAnsInfo.ans_tol = 0.0;
1626: break;
1627: }
1628: free_calc_expr(s);
1629: }
1630:
1631: /* Problem weight is per problem based */
1632: void
1633: assign_weight( s ) Symbol *s;
1634: { char warn_msg[WARN_MSG_LENGTH];
1635: YYDBUG_PR1(" weight = identifier\n");
1636: switch( s->s_type ) {
1637: case IDENTIFIER:
1638: sprintf(warn_msg,"WGT = var, \"%s\" not defined before use.\n", s->s_name);
1639: capa_msg(MESSAGE_ERROR,warn_msg);
1640: LexiProblem_p->weight = WEIGHT_DEFAULT;
1641: break;
1642: case I_VAR: case I_CONSTANT:
1643: if( s->s_int < 0 ) {
1644: sprintf(warn_msg,"WGT = %ld, weight cannot be less than zero.\n", s->s_int);
1645: capa_msg(MESSAGE_ERROR,warn_msg);
1646: LexiProblem_p->weight = WEIGHT_DEFAULT;
1647: } else {
1648: LexiProblem_p->weight = s->s_int;
1649: }
1650: break;
1651: case R_VAR: case R_CONSTANT:
1652: if( s->s_real < 0.0 ) {
1653: sprintf(warn_msg,"WGT = %g, weight cannot be less than zero.\n", s->s_real);
1654: capa_msg(MESSAGE_ERROR,warn_msg);
1655: LexiProblem_p->weight = WEIGHT_DEFAULT;
1656: } else {
1657: LexiProblem_p->weight = (int)(s->s_real);
1658: }
1659: break;
1660: case S_VAR: case S_CONSTANT: LexiProblem_p->weight = WEIGHT_DEFAULT; break;
1661: }
1662: free_calc_expr(s);
1663: }
1664: /* Answer try limit is per problem based */
1665: void
1666: assign_try_limits( s ) Symbol *s;
1667: { char warn_msg[WARN_MSG_LENGTH];
1668: switch( s->s_type ) {
1669: case IDENTIFIER:
1670: sprintf(warn_msg,"TRY = var, \"%s\" not defined before use.\n",s->s_name);
1671: capa_msg(MESSAGE_ERROR,warn_msg);
1672: LexiProblem_p->tries = MAX_TRIES;
1673: break;
1674: case I_VAR: case I_CONSTANT:
1675: if(s->s_int <= 0) {
1676: sprintf(warn_msg,"TRIES = %ld, tries cannot be less than or equal to zero.\n",s->s_int);
1677: capa_msg(MESSAGE_ERROR,warn_msg);
1678: LexiProblem_p->tries = MAX_TRIES;
1679: } else {
1680: LexiProblem_p->tries = s->s_int;
1681: }
1682: break;
1683: case R_VAR: case R_CONSTANT:
1684: if(s->s_real <= 0.0) {
1685: sprintf(warn_msg,"TRIES = %g, tries cannot be less than or equal to zero.\n",s->s_real);
1686: capa_msg(MESSAGE_ERROR,warn_msg);
1687: LexiProblem_p->tries = MAX_TRIES;
1688: } else {
1689: LexiProblem_p->tries = (int)(s->s_real);
1690: }
1691: break;
1692: case S_VAR: case S_CONSTANT: LexiProblem_p->tries = MAX_TRIES; break;
1693: }
1694: free_calc_expr(s);
1695: }
1696: /* Answer hint is per problem based */
1697: void
1698: assign_hint( s ) Symbol *s;
1699: { char warn_msg[WARN_MSG_LENGTH];
1700:
1701: switch( s->s_type ) {
1702: case IDENTIFIER:
1703: sprintf(warn_msg,"HINT = var, \"%s\" not defined before use.\n", s->s_name);
1704: capa_msg(MESSAGE_ERROR,warn_msg);
1705: LexiProblem_p->show_hint = SHOW_HINT_DEFAULT;
1706: break;
1707: case I_VAR: case I_CONSTANT:
1708: if( s->s_int < 0 ) {
1709: sprintf(warn_msg,"HINT = %ld, show hint cannot be less than zero.\n", s->s_int);
1710: capa_msg(MESSAGE_ERROR,warn_msg);
1711: LexiProblem_p->show_hint = SHOW_HINT_DEFAULT;
1712: } else {
1713: LexiProblem_p->show_hint = s->s_int;
1714: }
1715: break;
1716: case R_VAR: case R_CONSTANT:
1717: if( s->s_real < 0.0 ) {
1718: sprintf(warn_msg,"HINT = %g, show hint cannot be less than zero.\n", s->s_real);
1719: capa_msg(MESSAGE_ERROR,warn_msg);
1720: LexiProblem_p->show_hint = SHOW_HINT_DEFAULT;
1721: } else {
1722: LexiProblem_p->weight = (int)(s->s_real);
1723: }
1724: break;
1725: case S_VAR: case S_CONSTANT: LexiProblem_p->show_hint = SHOW_HINT_DEFAULT; break;
1726: }
1727: free_calc_expr(s);
1728: }
1729:
1730: /* Assign answer units string to CurrAnsInfo first */
1731: void
1732: assign_units( s ) Symbol *s;
1733: {
1734: char symb_str[ONE_TWO_EIGHT];
1735: char warn_msg[WARN_MSG_LENGTH];
1736:
1737: switch( s->s_type ) {
1738: case IDENTIFIER:
1739: sprintf(warn_msg,"UNIT = var, \"%s\" not defined before use.\n", s->s_name);
1740: capa_msg(MESSAGE_ERROR,warn_msg);
1741: break;
1742: case I_VAR: case I_CONSTANT:
1743: sprintf(warn_msg,"UNIT = %ld, unit cannot be a number.\n", s->s_int);
1744: capa_msg(MESSAGE_ERROR,warn_msg);
1745: break;
1746: case R_VAR: case R_CONSTANT:
1747: sprintf(warn_msg,"UNIT = %g, unit cannot be a number.\n", s->s_real);
1748: capa_msg(MESSAGE_ERROR,warn_msg);
1749: break;
1750: case S_VAR: case S_CONSTANT:
1751: strcpy(symb_str,s->s_str);
1752: strcpy(CurrAnsInfo.ans_unit_str,symb_str);
1753: CurrAnsInfo.ans_unit = u_parse_unit(symb_str);
1754: if (gUnitError) {
1755: sprintf(warn_msg,"Error in unit specified: %s\n",symb_str);
1756: capa_msg(MESSAGE_ERROR,warn_msg);
1757: }
1758: break;
1759: }
1760: }
1761: void
1762: assign_sigs( lb, ub ) int lb; int ub;
1763: {
1764: CurrAnsInfo.ans_sig_lb = lb;
1765: CurrAnsInfo.ans_sig_ub = ub;
1766: }
1767:
1768: void
1769: assign_id_list( s ) Symbol *s;
1770: {
1771: char warn_msg[WARN_MSG_LENGTH];
1772:
1773: switch( s->s_type ) {
1774: case IDENTIFIER:
1775: sprintf(warn_msg,"Eval = < ID @ Pts >, \"%s\" not defined before use.\n", s->s_name);
1776: capa_msg(MESSAGE_ERROR,warn_msg);
1777: break;
1778: case I_VAR: case I_CONSTANT:
1779: sprintf(warn_msg,"Eval = < %ld @ Pts >, ID cannot be a number.\n", s->s_int);
1780: capa_msg(MESSAGE_ERROR,warn_msg);
1781: break;
1782: case R_VAR: case R_CONSTANT:
1783: sprintf(warn_msg,"Eval = < %.16g @ Pts >, ID cannot be a number.\n", s->s_real);
1784: capa_msg(MESSAGE_ERROR,warn_msg);
1785: break;
1786: case S_VAR: case S_CONSTANT:
1787: CurrAnsInfo.ans_id_list = strsave(s->s_str);
1788: break;
1789: }
1790: }
1791:
1792: /* =========================================================================== */
1793:
1794:
1795:
1796:
1797:
1798:
1799: /* =========================================================================== */
1800:
1801: void start_question_over()
1802: {
1803: free_problems(LexiProblem_p);
1804: LexiProblem_p = (Problem_t *) capa_malloc(sizeof(Problem_t),1);
1805: problem_default(LexiProblem_p);
1806: begin_question();
1807: }
1808:
1809: void
1810: init_new_prob()
1811: {
1812: if (LastProblem_p) {
1813: LastProblem_p->next = LexiProblem_p;
1814: } else {
1815: FirstProblem_p = LexiProblem_p;
1816: }
1817: LastProblem_p = LexiProblem_p;
1818: Lexi_qnum++;
1819: LexiProblem_p = (Problem_t *) capa_malloc(sizeof(Problem_t),1); /* *** */
1820: problem_default(LexiProblem_p);
1821: }
1822: void
1823: add_answer_cnt(op)int op;
1824: {
1825: LexiProblem_p->ans_cnt++;
1826: if(LexiProblem_p->ans_op == 0) { /* the very first /AND or /OR */
1827: LexiProblem_p->ans_op = op;
1828: } else {
1829: if( LexiProblem_p->ans_op != op ) { char warn_msg[WARN_MSG_LENGTH];
1830: sprintf(warn_msg,"When specifying multiple answers, either /AND or /OR can be used, but not both.\n");
1831: capa_msg(MESSAGE_ERROR,warn_msg);
1832: }
1833: }
1834: }
1835:
1836: /* -- called when forming answer_expr */
1837: void
1838: finish_answer_info()
1839: {
1840: AnswerInfo_t *ai;
1841:
1842: if( LexiProblem_p->ans_cnt == 1 ) { /* Only one answer is defined */
1843: LexiProblem_p->answer = CurrAnsInfo.ans_str;
1844: LexiProblem_p->ans_type = CurrAnsInfo.ans_type;
1845: LexiProblem_p->calc = CurrAnsInfo.ans_calc;
1846: LexiProblem_p->tol_type = CurrAnsInfo.ans_tol_type;
1847: LexiProblem_p->tolerance = CurrAnsInfo.ans_tol;
1848: LexiProblem_p->sig_ubound= CurrAnsInfo.ans_sig_ub;
1849: LexiProblem_p->sig_lbound= CurrAnsInfo.ans_sig_lb;
1850: LexiProblem_p->id_list = CurrAnsInfo.ans_id_list;
1851: LexiProblem_p->pts_list = CurrAnsInfo.ans_pts_list;
1852: strcpy(LexiProblem_p->ans_fmt,CurrAnsInfo.ans_fmt);
1853: strcpy(LexiProblem_p->unit_str,CurrAnsInfo.ans_unit_str);
1854: LexiProblem_p->ans_unit = CurrAnsInfo.ans_unit;
1855: } else {
1856: ai = (AnswerInfo_t *)capa_malloc(sizeof(AnswerInfo_t),1);
1857: ai->ans_str = CurrAnsInfo.ans_str;
1858: ai->ans_type = CurrAnsInfo.ans_type;
1859: ai->ans_calc = CurrAnsInfo.ans_calc;
1860: ai->ans_tol_type = CurrAnsInfo.ans_tol_type;
1861: ai->ans_tol = CurrAnsInfo.ans_tol;
1862: ai->ans_sig_ub = CurrAnsInfo.ans_sig_ub;
1863: ai->ans_sig_lb = CurrAnsInfo.ans_sig_lb;
1864: ai->ans_id_list = CurrAnsInfo.ans_id_list;
1865: ai->ans_pts_list = CurrAnsInfo.ans_pts_list;
1866: strcpy(ai->ans_fmt,CurrAnsInfo.ans_fmt);
1867: strcpy(ai->ans_unit_str,CurrAnsInfo.ans_unit_str);
1868: ai->ans_unit = CurrAnsInfo.ans_unit;
1869: ai->ans_next = NULL;
1870: if(LexiProblem_p->ans_cnt == 2) {
1871: LexiProblem_p->ans_list = ai;
1872: } else {
1873: (LexiProblem_p->ans_list_last)->ans_next = ai;
1874: }
1875: LexiProblem_p->ans_list_last = ai;
1876: }
1877:
1878: }
1879:
1880: /* === End of capaGrammarDef.y ============================================= */
1881:
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