Annotation of loncom/homework/CAPA-converter/capaLexerDef.flex, revision 1.6
1.1 albertel 1: /*------------------------------------------------------------------------*/
2: /* capaLexerDef.flex created by Isaac Tsai Jul 15 1996 */
3: /* added /END(variable) */
4: /* added /HIN .... /DIS(variable) ... */
5: /* Jan 15 1998 /{KeyWord}{KeyWord}{KeyWord} */
6: /* replaced by /DIS */
7: /* catch "No /END() statement found" */
8: /* catch "/DIS(")" and "/DIS(""")" errors " */
9: /* catch "/LET var = " */
10: /* add a new token EoL to indicate '\n' '\r''\n' and '\r' */
11: /* This file is based on flex 2.5.3, flex 2.3 apparantly cannot take it :-( */
12: /* DONE /RMAP() function July 14, 1998 */
13: /* DONE /AND /OR answer formats July 20, 1998 */
14: /* DONE /IF () /ENDIF July 26, 1998 */
15: /* DONE /WHILE () /ENDWHILE August 10 1998 */
16: /* DONE /VERB /ENDVERB Feb 20 1998 */
17: /*------------------------------------------------------------------------*/
18: /**************************************************************************/
19:
20: %{
21:
22: #include <stdio.h>
23: #include <stdlib.h> /* strtod(), strtol() */
24: #include <string.h>
25: #ifdef NeXT
26: #include <sys/file.h>
27: #else
28: #include <unistd.h> /* access() */
29: #endif
30:
31: #include "capaCommon.h" /* capa_access() */
32: #include "capaParser.h" /* _symbol structure def */
33: #include "lex_debug.h" /* defined RETURN(xxx) macro */
34: #ifdef YYSTYPE
35: #undef YYSTYPE
36: #endif
37: #define YYSTYPE Symbol_p
38: #include "capaToken.h" /* from YACC -d capaGrammarDef.y */
39:
40:
41:
42: /* ============================================== begin of code */
43:
44: #define LEX_BUFLEN (8*1024) /* lexical buffer size (for each opened file) */
45:
46: #ifdef YYLMAX
47: #undef YYLMAX
48: #define YYLMAX 8192
49: #endif
50:
51: void yyfatalerror(char*msg);
52: #define YY_FATAL_ERROR yyfatalerror
53:
54: #ifdef LEX_DBUG
55: #define LLDBUG_PRL1(xx) { printf("Line %d ",Current_line[Input_idx]); printf(xx); fflush(stdout); }
56: #define LLDBUG_PRL2(xx,yy) { printf("Line %d ",Current_line[Input_idx]); printf(xx,yy); fflush(stdout); }
57: #define LLDBUG_PR1(xx) { printf(xx); fflush(stdout); }
58: #define LLDBUG_PR2(xx,yy) { printf(xx,yy); fflush(stdout); }
59: #define LLDBUG_PR3(xx,yy,zz) { printf(xx,yy,zz); fflush(stdout); }
60: #else
61: #define LLDBUG_PRL1(xx) { }
62: #define LLDBUG_PRL2(xx,yy) { }
63: #define LLDBUG_PR1(xx) { }
64: #define LLDBUG_PR2(xx,yy) { }
65: #define LLDBUG_PR3(xx,yy,zz) { }
66: #endif
67:
68: #ifdef LEX_INPUT_DBUG
69: #define LIDBUG_PR1(xx) { printf(xx); fflush(stdout); }
70: #define LIDBUG_PR2(xx,yy) { printf(xx,yy); fflush(stdout); }
71: #define LIDBUG_PR3(xx,yy,zz) { printf(xx,yy,zz); fflush(stdout); }
72: #else
73: #define LIDBUG_PR1(xx) { }
74: #define LIDBUG_PR2(xx,yy) { }
75: #define LIDBUG_PR3(xx,yy,zz) { }
76: #endif
77:
78: #ifdef USE_DYNAMIC_SYMBOLS
79: #define USE_DYNAMIC_LEXBUFS
80: #endif
81:
82: Symbol *yylval; /* global pointer to symbol */
83:
84: FILE *(Input_stream[MAX_OPENED_FILE]); /* <-- perhaps we can use linked list */
85: char Opened_filename[MAX_OPENED_FILE][QUARTER_K]; /* <-- perhaps we can use linked list */
86: int Input_idx;
87: int Lexi_pos[MAX_OPENED_FILE]; /* Current position in the line */
88:
89: #ifdef USE_DYNAMIC_LEXBUFS
90: char *(Lexi_buf[MAX_OPENED_FILE]); /* Line Buffer for current file */
91:
92: #else
93: char Lexi_buf[MAX_OPENED_FILE][LEX_BUFLEN+4]; /* Line Buffer for current file */
94:
95: #endif /* USE_DYNAMIC_LEXBUFS */
96:
97: char String_buf[LEX_BUFLEN]; /* Constant String buffer <-- perhaps we can use char pointer */
98: char *Dynamic_buf;
99: int Dynamic_buf_max;
100: int Dynamic_buf_cur;
101:
102:
103: static int End_of_input;
104: static int Pcount, Bcount; /* static means only available in this file */
105: /* --------------------------------------------------------------------------- */
106: /* GLOBAL VARIABLES */
107: /* --------------------------------------------------------------------------- */
108: int Lexi_line; /* Current source file line number, counting from beginning */
109: extern int Current_line[MAX_OPENED_FILE];
110:
111: int Func_idx;
112: Symbol FuncStack[MAX_FUNC_NEST]; /* <-- perhaps we can use linked list */
113:
114: int Array_idx;
115: Symbol *ArraySymbList_p;
116: Symbol *ArraySymbLast_p;
117: Symbol *FmlSymbList_p;
118: Symbol *FmlSymbLast_p;
119: int FmlSymb_cnt;
120: int Symb_count;
121:
122: int IFstatus[MAX_FUNC_NEST]; /* <-- perhaps we can use linked list */
123: int IFcurrent[MAX_FUNC_NEST]; /* <-- perhaps we can use linked list */
124: int IFcount;
125: WhileLoop_t WhileStack[MAX_FUNC_NEST]; /* <-- perhaps we can use linked list */
126: int While_idx, Wcount;
127:
128: #ifdef USE_DYNAMIC_SYMBOLS
129: Symbol *SymbList_p;
130: Symbol *SymbLast_p;
131: #else
132: Symbol SymbArray[MAX_SYMB_COUNT];
133: #endif /* USE_DYNAMIC_SYMBOLS */
134:
135:
136: char *Current_char_p; /* Collect string constant */
137: extern char *EndText_p;
138: extern char *StartText_p;
139: extern Problem_t *LexiProblem_p;
140: extern Problem_t *LastProblem_p;
141: int first_run=1;
142: int Stop_Parser;
1.4 albertel 143: static int dosend=1;
144: static int firstparam=1;
1.1 albertel 145: #define FLEX
146:
147: #define YY_STACK_USED 1 /* for yy_push_state(), yy_pop_state() */
148:
149: #ifdef FLEX
150:
151: int capaL_unput();
152: int capaL_input();
153:
154:
155: /* YY_INPUT()
156: Controls scanner input. By default, YY_INPUT reads from the
157: file-pointer yyin. Its action is to place up to max_size
158: characters in the character array buf and return in the
159: integer variable result either the number of characters read
160: or the constant YY_NULL to indicate EOF.
161: max_size is defined to be num_to_read = 8192 in liby
162: Following is a sample
163: redefinition of YY_INPUT, in the definitions section of
164: the input file:
165:
166: %{
167: #undef YY_INPUT
168: #define YY_INPUT(buf,result,max_size)\
169: {\
170: int c = getchar();\
171: result = (c == EOF) ? YY_NULL : (buf[0] = c, 1);\
172: }
173: %}
174:
175: */
176:
177: /* fgets() reads the input stream until
178: n-1 bytes have been read OR
179: a newline character is read and transferred to string OR
180: an EOF (End-of-File) condition is encountered
181:
182: The string is then terminated with a NULL character.
183:
184: ii = fseek(FILE *stream,0L,SEEK_END) ;
185: if(ii!=0) { error }
186: leng = ftell(FILE *stream) + 1 ;
187: fseek(FILE *stream,0L,SEEK_SET) ;
188: Lexi_buf[Input_idx] = (char *)capa_malloc(sizeof(char)*leng,1);
189:
190: */
191:
192:
193: #ifdef AVOIDYYINPUT
194: #define MAX_INCLUDE_DEPTH 10
195: YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];
196: int include_stack_ptr = 0;
197: #else
198: #ifdef USE_DYNAMIC_LEXBUFS
199: #define NEWYYINPUT
200: #endif
201:
202: #ifdef NEWYYINPUT
203: void newyy_input (char *buf,int *result,int max_size);
204: #define YY_INPUT(buf,result,max_size) newyy_input(buf,&result,max_size)
205:
206: #else
207: #ifdef USE_DYNAMIC_LEXBUFS
208:
209: #define YY_INPUT(buf,result,max_size) \
210: { int ii, leng, out_of_char; \
211: if (!Lexi_line) { /* was startup */ \
212: for(ii=0;ii < MAX_OPENED_FILE;ii++) { \
213: Lexi_buf[ii] = NULL; \
214: Lexi_pos[ii] = 0; \
215: Current_line[ii] = 0; \
216: } \
217: Input_idx = 0; \
218: first_run=0; \
219: yyin = Input_stream[Input_idx]; LIDBUG_PR1("<<yy_input() startup>>\n"); \
220: } \
221: out_of_char = 0; \
222: if ( Lexi_buf[Input_idx] == NULL ) { \
223: Lexi_buf[Input_idx] = (char *)capa_malloc(sizeof(char)*LEX_BUFLEN+1,1); out_of_char=1; \
224: } else { \
225: if (!Lexi_buf[Input_idx][Lexi_pos[Input_idx]]) { /* test if the line buffer is empty or at the end */ \
226: out_of_char=1; \
227: } \
228: } \
229: if( out_of_char ) { \
230: if (fgets(Lexi_buf[Input_idx],LEX_BUFLEN-1,Input_stream[Input_idx])==NULL) { /* read in one line */ \
231: LIDBUG_PR2("<<yy_input() fgets() returns NULL, input index=%d>>\n",Input_idx); \
232: if( (Input_idx > 0) && ( Lexi_buf[Input_idx][Lexi_pos[Input_idx]] == '\0') ) { \
233: LIDBUG_PR2("<<yy_input() close an input stream, input index=%d>>\n",Input_idx); \
234: fclose(Input_stream[Input_idx]); \
235: capa_mfree((char *)Lexi_buf[Input_idx]); \
236: Lexi_buf[Input_idx] = NULL; \
237: Input_idx--; \
238: yyin = Input_stream[Input_idx]; \
239: /* (Lexi_pos[Input_idx])++; */ \
240: buf[0] = Lexi_buf[Input_idx][Lexi_pos[Input_idx]-1]; \
241: result = 1; \
242: } else { \
243: result = YY_NULL; /* End of File */ \
244: } \
245: } else { /* successfully read in one line */ \
246: if (Lexi_buf[Input_idx]==NULL) puts("Whatup?");\
247: leng = strlen(Lexi_buf[Input_idx]); \
248: LIDBUG_PR3("<<yy_input() read into buffer a line(leng=%d), input index=%d>>\n",leng,Input_idx); \
249: Lexi_pos[Input_idx] = 0; \
250: Lexi_line++; \
251: Current_line[Input_idx]++; \
252: (Lexi_pos[Input_idx])++; \
253: buf[0] = Lexi_buf[Input_idx][Lexi_pos[Input_idx]-1]; \
254: /* need to take care of return continuation conditions */ \
255: /* so, we return to one-char-at-a-time approach */ \
256: /* for(ii=0;ii<leng;ii++) { */ \
257: /* buf[ii] = Lexi_buf[Input_idx][ii]; */ \
258: /* } */ \
259: /* buf[ii] = '\0'; */ \
260: /* printf("YY_INPUT()(Lexi_line=%d,max size=%d)(%c)",Lexi_line,max_size,buf[0]); */ \
261: result = 1; \
262: } \
263: } else { \
264: /* LIDBUG_PR2("<<yy_input() increase Lexi_pos, input index=%d>>\n",Input_idx); */ \
265: (Lexi_pos[Input_idx])++; \
266: buf[0] = Lexi_buf[Input_idx][Lexi_pos[Input_idx]-1]; \
267: result = 1; \
268: } \
269: if (Stop_Parser==1) { \
270: result = YY_NULL; \
271: } \
272: }
273:
274: #else
275:
276: #define YY_INPUT(buf,result,max_size) \
277: { int ii, leng; \
278: if (!Lexi_line) { /* was startup */ \
279: for(ii=0;ii < MAX_OPENED_FILE;ii++) { \
280: Lexi_buf[ii][0]=0; \
281: Lexi_pos[ii] = 0; \
282: Current_line[ii] = 0; \
283: } \
284: Input_idx = 0; \
285: first_run=0; \
286: yyin = Input_stream[Input_idx]; LIDBUG_PR1("<<yy_input() startup>>\n"); \
287: } \
288: if (!Lexi_buf[Input_idx][Lexi_pos[Input_idx]]) { /* test if the line buffer is empty or at the end */ \
289: if (fgets(Lexi_buf[Input_idx],LEX_BUFLEN-1,Input_stream[Input_idx])==NULL) { /* read in one line */ \
290: LIDBUG_PR2("<<yy_input() fgets() returns NULL, input index=%d>>\n",Input_idx); \
291: if( (Input_idx > 0) && ( Lexi_buf[Input_idx][Lexi_pos[Input_idx]] == '\0') ) { \
292: LIDBUG_PR2("<<yy_input() close an input stream, input index=%d>>\n",Input_idx); \
293: fclose(Input_stream[Input_idx]); \
294: Input_idx--; \
295: yyin = Input_stream[Input_idx]; \
296: /* (Lexi_pos[Input_idx])++; */ \
297: buf[0] = Lexi_buf[Input_idx][Lexi_pos[Input_idx]-1]; \
298: result = 1; \
299: } else { \
300: result = YY_NULL; /* End of File */ \
301: } \
302: } else { /* successfully read in one line */ \
303: leng = strlen(Lexi_buf[Input_idx]); \
304: LIDBUG_PR3("<<yy_input() read into buffer a line(leng=%d), input index=%d>>\n",leng,Input_idx); \
305: Lexi_pos[Input_idx] = 0; \
306: Lexi_line++; \
307: Current_line[Input_idx]++; \
308: (Lexi_pos[Input_idx])++; \
309: buf[0] = Lexi_buf[Input_idx][Lexi_pos[Input_idx]-1]; \
310: /* need to take care of return continuation conditions */ \
311: /* so, we return to one-char-at-a-time approach */ \
312: /* for(ii=0;ii<leng;ii++) { */ \
313: /* buf[ii] = Lexi_buf[Input_idx][ii]; */ \
314: /* } */ \
315: /* buf[ii] = '\0'; */ \
316: /* printf("YY_INPUT()(Lexi_line=%d,max size=%d)(%c)",Lexi_line,max_size,buf[0]); */ \
317: result = 1; \
318: } \
319: } else { \
320: /* LIDBUG_PR2("<<yy_input() increase Lexi_pos, input index=%d>>\n",Input_idx); */ \
321: (Lexi_pos[Input_idx])++; \
322: buf[0] = Lexi_buf[Input_idx][Lexi_pos[Input_idx]-1]; \
323: result = 1; \
324: } \
325: if (Stop_Parser==1) { \
326: result = YY_NULL; \
327: } \
328: }
329: #endif /* USE_DYNAMIC_LEXBUFS */
330: #endif /*NEWYYINPUT*/
331: #endif /*AVOIDYYINPUT*/
332:
333: #else
334:
335: #undef input
336: #undef unput
337:
338: #endif
339:
340: int capa_eof();
1.3 albertel 341:
1.1 albertel 342: %}
343:
344: Alpha [a-zA-Z_]
345: KeyChar [A-Z]
346: AlphaNum [a-zA-Z_0-9]
347: Number [0-9]
348: HexNumber [0-9a-fA-F]
349: Space [ \t]
350: Spaces ({Space}*)
351: FileName (\"[^"\n]*\")
352: Qchar ([0-9a-zA-Z \t!?\._,:;'"`~@#$%\^&\+\-\*=|\[\]{}()])
353: Operator ([=\+\-\*/%<>!&|,])
354: Identifier ([a-zA-Z_][a-zA-Z_0-9]*)
355: EndLine ([\r][\n]|[\n])
356:
357: %a 10500
358: %o 15000
359: %k 10000
360: %p 10000
361: %n 1000
362: %x S_COMMENT S_HINT S_HINTEXLAINX S_IMPORT S_EXPLAIN S_ENDX S_UNIT S_IGNORE
363: %x S_SKIP S_VARIABLE S_LET S_DEFINE S_TEXT S_MAP S_FIGURE S_ANSWER
364: %x S_STRING S_ANSCONTINUE S_TRUE_FALSE_STMT S_IF_SKIP S_WHILE_SKIP
1.4 albertel 365: %x S_NEXT_LINE S_VERB S_ECHO S_STRINGINANS
1.1 albertel 366: %array
367:
368:
369:
370: %%
371:
372: <S_IGNORE>{
373: {EndLine} BEGIN S_IGNORE;
374: [^\n]*$ BEGIN S_IGNORE;
375: <<EOF>> {
376: capa_eof();
377: #ifndef AVOIDYYINPUT
378: yyterminate();
379: #endif
380: }
381: }
382:
383: <S_COMMENT>{
1.3 albertel 384: {EndLine}{Spaces}"//"[^\n]*$ {LLDBUG_PRL2("[COMMENT<%s>]\n",yytext);
1.6 ! albertel 385: send("# %s\n",&yytext[2]);
1.2 albertel 386: }
1.3 albertel 387: [^\n]*{EndLine} {
388: send("\n"); BEGIN S_TEXT;
389: }
1.1 albertel 390: }
391:
1.2 albertel 392:
1.1 albertel 393: <S_TEXT>{
394: ^{Spaces}"/LET" |
1.3 albertel 395: ^{Spaces}"/BEG" { LLDBUG_PRL1("[LET]"); Pcount = 0; BEGIN S_LET; start_mode(MODE_SCRIPT,NULL);
1.2 albertel 396: }
1.1 albertel 397: ^{Spaces}"/VERB" {
398: LLDBUG_PRL1("[VERBATIM]");
399: BEGIN S_VERB;
1.4 albertel 400: start_mode(MODE_OUTTEXT,NULL);
401: send("<PRE>\n");
1.1 albertel 402: }
1.2 albertel 403: ^{Spaces}"/HIN"{Alpha}*{Spaces} { LLDBUG_PRL1("[HIN]");
1.3 albertel 404: start_mode(MODE_BLOCK,
405: "condition=\"&hinton\"");
1.2 albertel 406: BEGIN S_HINT;
407: }
1.3 albertel 408: ^{Spaces}"/EXP"{Alpha}*{Spaces} { start_mode(MODE_BLOCK,"condition=&explanation");
409: LLDBUG_PRL1("[EXP]"); Current_char_p = String_buf; BEGIN S_EXPLAIN; }
1.4 albertel 410: ^{Spaces}"/IMP"{Alpha}*{Space}+ { LLDBUG_PRL1("[IMP]"); BEGIN S_IMPORT; end_mode(); }
1.1 albertel 411: ^{Spaces}"/END" { LLDBUG_PRL1("[END]");
412: if ( (LexiProblem_p !=NULL) &&
413: (LexiProblem_p->question != NULL) &&
414: (LexiProblem_p->ans_type == 0)) {
415: EndText_p=strsave(LexiProblem_p->question);
416: LexiProblem_p=NULL;
417: } else {
418: EndText_p=NULL;
419: }
1.4 albertel 420: End_of_input = 1; BEGIN S_IGNORE;
1.1 albertel 421: }
422: ^{Spaces}"/START"[^\n]* { LLDBUG_PRL1("[START]");
423: if (LexiProblem_p !=NULL &&
424: LexiProblem_p->question != NULL) {
425: StartText_p=strsave(LexiProblem_p->question);
426: } else {
427: StartText_p=NULL;
428: }
429: BEGIN S_TEXT;
430: }
431:
432: ^{Spaces}"/END"{Spaces}[\(]{Spaces} { LLDBUG_PRL1("[END()]"); BEGIN S_ENDX; }
433: ^"/DEF" { Bcount = 0; BEGIN S_DEFINE; RETURN(CAPA_DEF); }
1.4 albertel 434: ^{Spaces}"/ANS" { LLDBUG_PRL2("[ANS(%s)]",yytext);
435: Pcount = 0;
436: BEGIN S_ANSWER;
437: end_mode();
438: start_mode(MODE_ANSWER,NULL);
439: send("<caparesponse answer=\"");
440: dosend=1;
441: firstparam=1;
442: }
443: ^{Spaces}"/SUBJECTIVE" { LLDBUG_PRL1("[SUBJECTIVE ANSWER]");
444: Pcount = 0;
445: BEGIN S_ANSWER;
446: end_mode();
447: send("<capasubjectiveresponse");
448: dosend=1;
449: firstparam=1;
450: }
451: ^{Spaces}"/MAP" { LLDBUG_PRL1("[MAP]"); Pcount = 0; BEGIN S_MAP; start_mode(MODE_SCRIPT,NULL);send("&map("); }
452: ^{Spaces}"/RMAP" { LLDBUG_PRL1("[RMAP]"); Pcount = 0; BEGIN S_MAP; start_mode(MODE_SCRIPT,NULL);send("&rmap("); }
1.1 albertel 453: ^{Spaces}"/ENDWHILE"([^\n])* { long int file_pos;
454: int top_item, input_idx;
455: LLDBUG_PRL2("[ENDWHILE While_idx=<%d>]\n",While_idx);
456:
457: top_item = While_idx - 1;
458: if( top_item < 0 ) { /* strange things must have happened here! */
459:
460: } else {
461: input_idx = WhileStack[top_item].input_idx;
462: file_pos = WhileStack[top_item].pos_idx;
463: Current_line[input_idx] = WhileStack[top_item].line_idx;
464: Lexi_pos[input_idx] = 0;
465: fseek(Input_stream[input_idx],file_pos,SEEK_SET);
466: fgets(Lexi_buf[input_idx],LEX_BUFLEN-1,Input_stream[input_idx]);
467: While_idx--;
468: }
469: BEGIN S_TEXT;
470: }
471: "/WHILE" |
472: ^{Spaces}"/WHILE" { long int file_pos;
473: int leng;
474: LLDBUG_PRL2("[WHILE While_idx=<%d>]\n",While_idx);
475: leng = strlen(Lexi_buf[Input_idx]); /* length of current line */
476: /* <-- because we use fgets() to read input,
477: thus ftell() will give the starting position of next line */
478: WhileStack[While_idx].input_idx = Input_idx;
479: file_pos = ftell(Input_stream[Input_idx]);
480: file_pos -= leng; /* calibrate the current line length */
481: WhileStack[While_idx].pos_idx = file_pos; /* begin of current line */
482: WhileStack[While_idx].line_idx = Current_line[Input_idx];
483: While_idx++; /* advance the stack pointer */
484:
485: BEGIN S_TRUE_FALSE_STMT; RETURN(CAPA_WHILE);
486:
487: }
488: ^{Spaces}"/IF" { IFcount++; IFcurrent[IFcount] = RUN_IF_PORTION;
489: LLDBUG_PRL2("[IF <IFcount=%d>]",IFcount); BEGIN S_TRUE_FALSE_STMT; RETURN(CAPA_IF); }
490: ^{Spaces}"/ELSE"([^\n])* { LLDBUG_PRL2("[ELSE <IFcount=%d>]\n",IFcount);
491: IFcurrent[IFcount] = RUN_ELSE_PORTION;
492: if( IFstatus[IFcount] == IF_TRUE ) {
493: LLDBUG_PRL1("[ELSE begin Skip]\n");
494: BEGIN S_IF_SKIP;
495: }
496: }
497: ^{Spaces}"/ENDIF"([^\n])* { IFcount--; LLDBUG_PRL2("[ENDIF <IFcount=%d>]\n",IFcount);
498: }
499: "/AND" { LLDBUG_PRL1("[AND]"); BEGIN S_ANSCONTINUE; RETURN(ANS_AND); }
500: "/DIS" { /* since S_VARIABLE treat {Space} as null, so here we do not match ( */
501: /* so that between /DIS and ( can have as many {Space} as we want */
502: LLDBUG_PR1("[DIS<]");
503: init_funcstack();
504: Pcount = 0; BEGIN S_VARIABLE;
1.3 albertel 505: start_delayed();
1.1 albertel 506: }
507: "/OR" { LLDBUG_PRL1("[OR]"); BEGIN S_ANSCONTINUE; RETURN(ANS_OR); }
508: {EndLine} { LLDBUG_PR1("[EoL within S_TEXT]\n"); /* end of the whole text line */
1.3 albertel 509: send("\n"); }
1.1 albertel 510: [\\]{Space}*{EndLine} { LLDBUG_PR2("[\\EoL continue](%s)",yytext); /* continuation on next line */ }
1.2 albertel 511: ^{Spaces}"//"[^\n]*$ { LLDBUG_PRL2("[COMMENT<%s>]\n",yytext);
1.4 albertel 512: start_mode(MODE_SCRIPT,NULL);
513: send("# %s\n",&yytext[2]);
1.2 albertel 514: BEGIN S_COMMENT;
1.1 albertel 515: }
1.2 albertel 516:
1.1 albertel 517: [^/\n\\]+$ |
518: [/] |
1.3 albertel 519: [\\] { start_mode(MODE_OUTTEXT,NULL);
1.1 albertel 520: LLDBUG_PR2("[TEXT_LINE<%s>]",yytext);
1.4 albertel 521: send(yytext);
1.1 albertel 522: }
523: ([^/\n])+[/] |
524: ([^/\n])+[\\] { /* matches anything until a '/' or a '\' */
1.3 albertel 525: start_mode(MODE_OUTTEXT,NULL);
1.1 albertel 526: LLDBUG_PR2("[TEXT_LINE( )<%s>]",yytext);
527:
528: yyless(yyleng-1); /* push back the last char */
529: BEGIN S_TEXT;
1.2 albertel 530: send(yytext);
1.1 albertel 531: }
532: <<EOF>> {
533: #ifdef AVOIDYYINPUT
534: char warn_msg[ONE_K];
535:
536: if ( (--include_stack_ptr < 0) || Stop_Parser) {
537: if (Stop_Parser) {
538: if ( LexiProblem_p!=NULL &&
539: LexiProblem_p->question != NULL)
540: EndText_p=strsave(LexiProblem_p->question);
541: while (include_stack_ptr >= 0) {
542: yy_delete_buffer( YY_CURRENT_BUFFER );
543: yy_switch_to_buffer(
544: include_stack[include_stack_ptr]);
545: --include_stack_ptr;
546: }
547: } else {
548: sprintf(warn_msg,
1.3 albertel 549: "at End-of-File, a /END is needed.\n");
1.1 albertel 550: capa_msg(MESSAGE_ERROR,warn_msg);
551: }
552: free_problems(LexiProblem_p);
553: LexiProblem_p=NULL;
554: yyterminate();
555: } else {
556: yy_delete_buffer( YY_CURRENT_BUFFER );
557: yy_switch_to_buffer(include_stack[include_stack_ptr]);
558: }
559: #else
560: char warn_msg[ONE_K];
561: if (!Stop_Parser) {
562: sprintf(warn_msg,"at End-of-File, a /END is needed.\n");
563: capa_msg(MESSAGE_ERROR,warn_msg);
564: } else {
565: if (LexiProblem_p != NULL &&
566: LexiProblem_p->question != NULL)
567: EndText_p=strsave(LexiProblem_p->question);
568: }
569: capa_eof();
570: yyterminate();
571: #endif
572: }
573: }
574:
575:
576: <S_ENDX>{
577: {Alpha}{AlphaNum}* { /* DONE: add codes to handle /END() */
578: char *question_end=NULL;
579: End_of_input = 1;
580: if (EndText_p!=NULL) capa_mfree((char*)EndText_p);
581: if ((LexiProblem_p!=NULL) &&
582: (LexiProblem_p->question != NULL) &&
583: (LexiProblem_p->ans_type == 0)) {
584: question_end=strsave(LexiProblem_p->question);
585: }
586: if( yyleng > 0 ) {
587:
588: LLDBUG_PRL2("[END()<%s>]\n",yytext);
589: /*yylval = find_identifier(yytext);*/
590:
591: switch(yylval->s_type) {
592: case IDENTIFIER:
593: case I_VAR: case I_CONSTANT:
594: case R_VAR: case R_CONSTANT:
595: break;
596: case S_VAR: case S_CONSTANT:
597: EndText_p = strsave(yylval->s_str);
598: if (question_end) {
599: int leng; char *new_end;
600: leng = strlen(EndText_p) +
601: strlen(question_end) + 1;
602: new_end = capa_malloc(sizeof(char), leng);
603: strcat(new_end, question_end);
604: strcat(new_end, EndText_p);
605: capa_mfree(EndText_p);
606: capa_mfree(question_end);
607: EndText_p=new_end;
608: }
609: break;
610: default: break;
611: }
612: }
613: BEGIN S_IGNORE; RETURN(CAPA_END);
614: }
615: {Space}* { /* ignore spaces */ }
616: [\)] { /* a right paren */
617: if ( (LexiProblem_p != NULL) &&
618: (LexiProblem_p->question != NULL) &&
619: (LexiProblem_p->ans_type == 0)) {
620: EndText_p=strsave(LexiProblem_p->question);
621: } else {
622: EndText_p=NULL;
623: }
624: BEGIN S_IGNORE;
625: RETURN(CAPA_END);
626: }
627: }
628:
629: <S_HINT,S_EXPLAIN>{
630: [/][Dd][Ii][Ss]{Space}*[\(]{Space}* { yy_push_state(S_HINTEXLAINX); }
631: [^/\n]+[/\\] { char *aptr = yytext;
632: int ii;
633:
634: yyless(yyleng-1);
1.2 albertel 635: send(aptr);
1.1 albertel 636: }
1.2 albertel 637: [/] { send("/"); }
638: [\\] { send("\\"); }
1.1 albertel 639: [\\]{Space}*[\n] { LLDBUG_PR1("[\\CR hint explain continue]"); /* Hint and explain continuation */ }
1.2 albertel 640: [^/\n\\]+$ {char *aptr = yytext;
1.1 albertel 641: int ii;
1.2 albertel 642: send(aptr);
643: }
1.1 albertel 644: }
645: <S_HINT>{
646: {EndLine} { LLDBUG_PR1("[CR hint]");
1.3 albertel 647: send("\n");
1.2 albertel 648: BEGIN S_TEXT;
1.1 albertel 649: }
650: }
651: <S_EXPLAIN>{
652: {EndLine} { LLDBUG_PR1("[CR explain]");
1.4 albertel 653: send("\n");
654: BEGIN S_TEXT;
1.1 albertel 655: }
656: }
657:
658: <S_HINTEXLAINX>{
659: {Alpha}{AlphaNum}* { char *aptr;
660: char tmp_str[QUARTER_K],warn_msg[ONE_K];
661: int ii, len;
662: Symbol *tmp_p;
663:
664: /*tmp_p = find_identifier(yytext);*/
665: switch(tmp_p->s_type) {
666: case IDENTIFIER:
667: sprintf(warn_msg,"var %s not defined.\n", yytext);
668: capa_msg(MESSAGE_ERROR,warn_msg);
669: break;
670: case I_VAR:
671: case I_CONSTANT:
672: sprintf(tmp_str,"%ld",tmp_p->s_int);
673: len = strlen(tmp_str);
674: for(ii=0;ii< len;ii++) {
675: *Current_char_p++ = tmp_str[ii];
676: }
677: break;
678: case R_VAR:
679: case R_CONSTANT:
680: sprintf(tmp_str,"%g",tmp_p->s_real);
681: len = strlen(tmp_str);
682: for(ii=0;ii< len;ii++) {
683: *Current_char_p++ = tmp_str[ii];
684: }
685: break;
686: case S_VAR:
687: case S_CONSTANT:
688: len = strlen(tmp_p->s_str);
689: aptr = tmp_p->s_str;
690: for(ii=0;ii< len;ii++) {
691: *Current_char_p++ = *aptr++;
692: }
693: break;
694: }
1.2 albertel 695: printf("FIXME!Hint: %s\n",yytext);
1.1 albertel 696: }
697: {Space}+ { }
698: [)] { yy_pop_state(); }
699: }
700:
701: <S_IMPORT>{
1.5 albertel 702: {FileName}{Space}* { end_mode();send("<import>/res/capa/%s</import>\n",yytext); BEGIN S_SKIP; }
1.3 albertel 703: {Identifier}{Space}* { end_mode();send("<import>$%s</import>\n",yytext); BEGIN S_SKIP; }
1.1 albertel 704: }
705:
706: <S_ANSWER>{
1.4 albertel 707: [Pp][Ll][Uu][Ss] { LLDBUG_PR1("[PLUS]"); add_delayed("+");}
708: [Mm][Ii][Nn][Uu][Ss] { LLDBUG_PR1("[MINUS]"); add_delayed("-");}
709:
710: [Cc][Ss] { LLDBUG_PR1("[CS]"); send("cs");}
711: [Cc][Ii] { LLDBUG_PR1("[CI]"); send("ci");}
712: [Mm][Cc] { LLDBUG_PR1("[MC]"); send("mc");}
713: [Ff][Mm][Ll] { LLDBUG_PR1("[FORMULA]"); send("fml"); }
714:
1.1 albertel 715: [Oo][Nn] |
1.4 albertel 716: [Yy][Ee][Ss] { LLDBUG_PR1("[ON]"); send("on");}
1.1 albertel 717: [Oo][Ff][Ff] |
1.4 albertel 718: [Nn][Oo] { LLDBUG_PR1("[OFF]"); send("off");}
719: [Ff][Mm][Tt] { LLDBUG_PR1("[FMT]"); }
720: [Uu][Nn][Ff][Mm][Tt] { LLDBUG_PR1("[UNFMT]"); }
721:
722: [,=] { LLDBUG_PR2("[symbol(%s)]",yytext);}
723: [%] { LLDBUG_PR2("[symbol(%s)]",yytext);
724: if (dosend==1) send("%s",yytext);
725: if (dosend==2) add_delayed("%s",yytext);
726: }
727: [:@#-] { LLDBUG_PR2("[symbol(%s)]",yytext);
728: if (dosend==1) send("%s",yytext);
729: if (dosend==2) add_delayed("%s",yytext);
730: }
731: "<" { LLDBUG_PR2("[symbol(%s)]",yytext);
732: if (dosend==1) send("%s",yytext);
733: if (dosend==2) add_delayed("%s",yytext);
734: }
735: ">" { LLDBUG_PR2("[symbol(%s)]",yytext);
736: if (dosend==1) send("%s",yytext);
737: if (dosend==2) add_delayed("%s",yytext);
738: }
739:
1.1 albertel 740: [Pp][Cc][Rr] |
1.6 ! albertel 741: [Hh][Gg][Rr] { if (firstparam) firstparam=0; else add_delayed("\"></responseparam>\n\t");
! 742: add_delayed("<responseparam type=\"hgr\" value=\"on|off\" default=\"");
1.4 albertel 743: dosend=2;
744: }
745: [Tt][Oo][Ll] { LLDBUG_PR2("[tol(%s)]",yytext);
1.6 ! albertel 746: if (firstparam) firstparam=0; else add_delayed("\"></responseparam>\n\t");
! 747: add_delayed("<responseparam type=\"tol\" value=\"tolerance\" default=\"");
1.4 albertel 748: dosend=2;
749: }
750: [Ss][Ii][Gg] {
751: LLDBUG_PR2("[SIG(%s)]",yytext);
1.6 ! albertel 752: if (firstparam) firstparam=0; else add_delayed("\"></responseparam>\n\t");
! 753: add_delayed("<responseparam type=\"sig\" value=\"int,range,0-12\" default=\"");
1.4 albertel 754: dosend=2;
755: }
756:
757: [Ss][Tt][Rr] { LLDBUG_PR1("[STR]"); send("\" str="); dosend=1; }
758: [Ee][Vv][Aa][Ll] |
759: [Ee][Vv][Aa][Ll][Uu][Aa][Tt][Ee] { LLDBUG_PR1("[EVAL]");send("\" eval="); dosend=1;}
760: [Uu][Nn][Ii][Tt] |
761: [Uu][Nn][Ii][Tt][Ss] { LLDBUG_PR1("[UNIT]"); send("\" units=\""); dosend=1;}
762:
763: [Ee][Xx][Tt][Ee][Rr][Nn][Aa][Ll] { LLDBUG_PR1("[EXTERNAL]"); dosend=0; }
764: [Aa][Nn][Ss][Bb][Oo][Xx] { LLDBUG_PR1("[SHOW_ANS_BOX]"); dosend=0; }
765: [Vv][Ee][Rr][Bb][Aa][Tt][Ii][Mm] { LLDBUG_PR1("[VERBATIM]"); dosend=0; }
766: [Bb][Rr] { LLDBUG_PR1("[SHOW_BR]"); dosend=0; }
767: [Pp][Aa][Tt][Hh] { send("\" path=\""); dosend=0; }
768: [Cc][Aa][Ll][Cc] { send("\" calc=\""); dosend=0; }
769:
770: [Ee][Xx][Pp][Ll][Aa][Ii][Nn] { LLDBUG_PR1("[EXPLAIN]"); dosend=0; }
771: [Hh][Ii][Nn][Tt] { LLDBUG_PR1("[HINT]"); dosend=0; }
1.1 albertel 772: [Tt][Rr][Yy] |
1.4 albertel 773: [Tt][Rr][Ii][Ee][Ss] { LLDBUG_PR1("[TRY]"); dosend=0; }
774: [Ww][Gg][Tt] { LLDBUG_PR1("[WGT]"); dosend=0; }
775:
1.1 albertel 776: [\)] { LLDBUG_PR1("[)]"); Pcount--;
777: if(Pcount==0) {
778: BEGIN S_ANSCONTINUE;
779: }
1.4 albertel 780: send("\">\n\t");
781: dosend=1;
782: flush_delayed();
783: if (!firstparam) send("\">");
784: send("\n\t<textline></textline>\n</caparesponse>\n");
1.1 albertel 785: }
786: }
787:
1.4 albertel 788: <S_VARIABLE,S_TRUE_FALSE_STMT,S_LET,S_MAP,S_ANSWER>{
789: {Alpha}{AlphaNum}* { LLDBUG_PR2("[ID<%s>]",yytext);
790: LLDBUG_PR2("[SYMB CNT=<%d>]", Symb_count);
791: if (dosend==1) send("$%s",yytext);
792: if (dosend==2) add_delayed("$%s",yytext);
1.1 albertel 793: }
794:
1.4 albertel 795: {Alpha}{AlphaNum}*{Space}*[(] { if (dosend==1) send("&%s",yytext);
796: if (dosend==2) add_delayed("&%s",yytext);
1.2 albertel 797: Pcount++;
1.1 albertel 798: }
799: {Alpha}{AlphaNum}*{Space}*[\[] { char aline[MAX_FUNC_NAME];
800: int i;
801: for(i=0;i < (yyleng-1); i++) {
802: if( yytext[i] == ' ' || yytext[i] == '\t' ||
803: yytext[i] == 0 || yytext[i] == '[' ) break;
804: aline[i] = yytext[i];
805: }
806: aline[i] = 0;
807: LLDBUG_PR2("[ARRAY<%s>]",aline);
808:
809: yylval = (Symbol *) capa_malloc(1, sizeof(Symbol)); /* *** */
810: yylval->s_name = strsave(aline); /* free it in parser() */
811: yylval->s_type = ARRAY_ID;
812:
813: yyless(yyleng-1); /* <-- push back char '[' */
814: RETURN(ARRAY_ID);
815: }
816: {Number}*"\."{Number}*[Ee]"+"{Number}+ |
817: {Number}*"\."{Number}*[Ee]{Number}+ |
818: {Number}*"\."{Number}*[Ee]"-"{Number}+ |
819: {Number}+[Ee]"+"{Number}+ |
820: {Number}+[Ee]{Number}+ |
821: {Number}+[Ee]"-"{Number}+ |
822: {Number}+"\."{Number}* |
1.4 albertel 823: "\."{Number}+ { LLDBUG_PR2("[REAL<%s>]",yytext);
824: if(dosend==1) send("%s",yytext);
825: if(dosend==2) add_delayed("%s",yytext);
1.1 albertel 826: }
827:
1.4 albertel 828: {Number}+ { LLDBUG_PR2("[INT<%s>]",yytext);
829: if (dosend==1) send("%s",yytext);
830: if (dosend==2) add_delayed("%s",yytext);
1.1 albertel 831: }
832: [\[] { LLDBUG_PR1("[dis let ans map '[']"); return(yytext[0]); }
833: [\]] { LLDBUG_PR1("[dis let ans map ']']"); return(yytext[0]); }
834: {Space}+ { /* LLDBUG_PR1("[SP ignored]"); Ignore Spaces */ }
1.4 albertel 835: }
836:
837: <S_VARIABLE,S_TRUE_FALSE_STMT,S_MAP,S_LET>{
838: [\"] { LLDBUG_PR1("[TF,V,LET,MAP str\" ]");
1.1 albertel 839: Current_char_p = String_buf;
1.3 albertel 840: send("\"");
841: yy_push_state(S_STRING);
1.1 albertel 842: }
843: }
844:
1.4 albertel 845: <S_ANSWER>{
846: [\"] { LLDBUG_PR1("[ANS str\" ]");
847: Current_char_p = String_buf;
848: yy_push_state(S_STRINGINANS);
849: }
850: }
851:
852: <S_VARIABLE,S_TRUE_FALSE_STMT,S_MAP,S_ANSWER>{
853: [\(] { LLDBUG_PR1("[dis let ans map (]");
854: Pcount++;
855: if (Pcount > 1 ) {
856: if (dosend==1) send(yytext);
857: if (dosend==2) add_delayed(yytext);
858: }
859: }
860: }
861:
862: <S_LET>{
863: [\(] { LLDBUG_PR1("[dis let ans map (]");
864: Pcount++;
865: send(yytext);
866: }
867: }
868:
869: <S_VARIABLE>[:]{Number}+[EeFf] {
1.3 albertel 870: end_delayed();
871: send("&format(");
872: flush_delayed();
873: send(",\"%s\")",yytext+1);
1.1 albertel 874: }
1.4 albertel 875: <S_ANSWER>[:]{Number}+[EeFf] {
876: if (dosend) send("\" format=\"%s",yytext+1);
877: }
1.1 albertel 878:
879: <S_VARIABLE,S_TRUE_FALSE_STMT,S_LET,S_MAP>{
1.4 albertel 880: "==" { LLDBUG_PR1("[==]"); send(yytext); }
881: "!=" { LLDBUG_PR1("[!=]"); send(yytext); }
882: ">" { LLDBUG_PR1("[>]"); send(yytext); }
883: ">=" { LLDBUG_PR1("[>=]"); send(yytext); }
884: "<" { LLDBUG_PR1("[<]"); send(yytext); }
885: "<=" { LLDBUG_PR1("[<=]"); send(yytext); }
886: "&&" { LLDBUG_PR1("[&&]"); send(yytext); }
887: "||" { LLDBUG_PR1("[||]"); send(yytext); }
888: "//" { if(Pcount==0) {
889: send("; #");
890: BEGIN S_ECHO;
891: }
892: }
1.2 albertel 893: {Operator} { LLDBUG_PR2("[Op(%c) in VAR,TF_STMT,LET]",yytext[0]); send(yytext); }
1.1 albertel 894: }
895:
896:
897:
898: <S_VARIABLE>{
1.3 albertel 899: [\)] { LLDBUG_PR1("[)]");
900: Pcount--;
901: if(Pcount == 0) {
902: BEGIN S_TEXT;
903: flush_delayed();
904: } else {
905: send(yytext);
906: }
907: }
1.1 albertel 908: [\\]{Space}*{EndLine} { LLDBUG_PR2("[\\EoL continue in S_VARIABLE (DIS?)](%s)",yytext); /* continuation on next line */ }
1.3 albertel 909: {EndLine} { LLDBUG_PR1("[EoL within /dis()]\n"); }
1.1 albertel 910: . { char warn_msg[WARN_MSG_LENGTH];
911: sprintf(warn_msg,"When use a VARIABLE, an unexpected char [%c] is encountered.\n",yytext[0]);
912: capa_msg(MESSAGE_ERROR,warn_msg);
913: }
914: }
915:
916: <S_TRUE_FALSE_STMT>{
917: [\)] { LLDBUG_PRL1("[) in TRUE_FALSE]"); Pcount--; if(Pcount == 0) BEGIN S_NEXT_LINE; return(yytext[0]); }
918: [\\]{Space}*{EndLine} { LLDBUG_PR2("[\\EoL continue in S_TRUE_FALSE_STMT](%s)",yytext); /* continuation on next line */ }
919: {EndLine} { LLDBUG_PR1("[EoL within /IF()]\n"); RETURN(EoL); }
920: . { char warn_msg[WARN_MSG_LENGTH];
921: sprintf(warn_msg,"In /IF(), an unexpected char [%c] is encountered.\n",yytext[0]);
922: capa_msg(MESSAGE_ERROR,warn_msg);
923: }
924: }
925:
926: <S_STRING>{
1.3 albertel 927: [\\][\\] { /*char *aptr = yytext;
928: while( *aptr ) *Current_char_p++ = *aptr++;*/
929: send(yytext);
1.1 albertel 930: }
1.3 albertel 931: [\\][\"] { /**Current_char_p++ = '"';*/ send("\\\""); }
1.1 albertel 932: [\\]{Space}*[\n] { LLDBUG_PR2("[\\CR continue in S_STRING](%s)",yytext); /* continuation on next line */ }
933: [\"] { /* end of a string constant -- */
1.3 albertel 934: send("\"");
1.1 albertel 935: yy_pop_state();
1.3 albertel 936: }
1.1 albertel 937: {EndLine} { /* check for termination of string constant */
938: char warn_msg[WARN_MSG_LENGTH];
939:
940: sprintf(warn_msg,"STRING not terminated properly, an EoL encountered in the middle.\n%s\n",String_buf);
941: capa_msg(MESSAGE_ERROR,warn_msg);
942: yy_pop_state();
943: }
1.3 albertel 944: . { /*char *aptr = yytext;
945: while( *aptr ) *Current_char_p++ = *aptr++;*/
946: send(yytext);
1.1 albertel 947: }
948: }
949:
1.4 albertel 950: <S_STRINGINANS>{
951: [\\][\\] { /*char *aptr = yytext;
952: while( *aptr ) *Current_char_p++ = *aptr++;*/
953: if (dosend==1) send("%s",yytext);
954: if (dosend==2) add_delayed("%s",yytext);
955: }
956: [\\][\"] { /**Current_char_p++ = '"';*/
957: if (dosend==1) send("%s",yytext);
958: if (dosend==2) add_delayed("%s",yytext);
959: }
960: [\\]{Space}*[\n] { LLDBUG_PR2("[\\CR continue in S_STRING](%s)",yytext); /* continuation on next line */ }
961: [\"] { /* end of a string constant -- */
962: yy_pop_state();
963: }
964: {EndLine} { /* check for termination of string constant */
965: char warn_msg[WARN_MSG_LENGTH];
966:
967: sprintf(warn_msg,"STRING not terminated properly, an EoL encountered in the middle.\n%s\n",String_buf);
968: capa_msg(MESSAGE_ERROR,warn_msg);
969: yy_pop_state();
970: }
971: . { /*char *aptr = yytext;
972: while( *aptr ) *Current_char_p++ = *aptr++;*/
973: if (dosend==1) send("%s",yytext);
974: if (dosend==2) add_delayed("%s",yytext);
975: }
976: }
977:
1.2 albertel 978: <S_LET>[\)] { LLDBUG_PR1("[) in LET]"); Pcount--;send(yytext); }
1.1 albertel 979:
980: <S_SKIP>{
981: [^\n]+$ { }
1.2 albertel 982: {EndLine} { BEGIN S_TEXT; }
1.1 albertel 983: }
984:
1.4 albertel 985: <S_ECHO>{
986: [^\n]+$ { send(yytext); }
987: {EndLine} { send(yytext); BEGIN S_TEXT; }
988: }
989:
1.1 albertel 990: <S_LET,S_ANSWER,S_MAP>{
991: [\\]{Space}*{EndLine} { LLDBUG_PR1("[\\EoL let ans map]"); /* continuation */ }
1.4 albertel 992: {EndLine} { LLDBUG_PR1("[EoL END let ans map]\n");
993: if(Pcount == 0) BEGIN S_TEXT;
994: send(";%s",yytext);
995: }
1.1 albertel 996: }
997:
998: <S_MAP>{
1.5 albertel 999: [;,] { LLDBUG_PR2("[%c]",yytext[0]); send("%c",yytext[0]); }
1.1 albertel 1000: [\)] { LLDBUG_PR1("[) in MAP]"); Pcount--;
1001: if(Pcount==0) {
1002: BEGIN S_SKIP;
1003: }
1.5 albertel 1004: send("%c",yytext[0]);
1.1 albertel 1005: }
1006: }
1007:
1008: <S_ANSCONTINUE>{
1009: {Space}+ { /* ignore white spaces */ }
1010: [\\]{Space}*{EndLine} { /* continuation */ }
1011: {EndLine} { /* end of answer and/or other answers */ LLDBUG_PR1("[complete an answer<EoL>]");
1012: BEGIN S_TEXT; }
1013: "/AND" { LLDBUG_PR1("[AND]"); RETURN(ANS_AND); }
1014: "/OR" { LLDBUG_PR1("[OR]"); RETURN(ANS_OR); }
1015: }
1016:
1017: <S_IF_SKIP>{
1018: ^{Spaces}"/IF"[^\n]*{EndLine} { IFcount++; LLDBUG_PRL2("[Skip IF <IFcount=%d>]\n",IFcount);
1019: IFstatus[IFcount] = IF_DONT_CARE;
1020: }
1021: ^{Spaces}"/ELSE"[^\n]*{EndLine} { LLDBUG_PRL2("[Skip ELSE <IFcount=%d>]",IFcount);
1022: IFcurrent[IFcount]=RUN_ELSE_PORTION;
1023: if( IFstatus[IFcount] == IF_FALSE ) {
1024: LLDBUG_PRL1("[ELSE begin TEXT CR]\n");
1025: BEGIN S_TEXT;
1026: }
1027: if( IFstatus[IFcount] == IF_TRUE ) {
1028: LLDBUG_PRL1("[ELSE THIS SHOULD NEVER HAPPEN.]\n");
1029: }
1030: }
1031: ^{Spaces}"/ENDIF"[^\n]*{EndLine} { IFcount--; LLDBUG_PRL2("[Skip ENDIF <IFcount=%d>]\n",IFcount);
1032: if( IFcount == 0 ) {
1033: LLDBUG_PRL1("[ENDIF begin TEXT CR]\n");
1034: BEGIN S_TEXT;
1035: }
1036: if( (IFcurrent[IFcount] == RUN_IF_PORTION )&&(IFstatus[IFcount] == IF_TRUE)) {
1037: LLDBUG_PRL1("[ENDIF begin TEXT CR]\n");
1038: BEGIN S_TEXT;
1039: }
1040: if( (IFcurrent[IFcount] == RUN_ELSE_PORTION )&&(IFstatus[IFcount] == IF_FALSE)) {
1041: LLDBUG_PRL1("[ENDIF begin TEXT CR]\n");
1042: BEGIN S_TEXT;
1043: }
1044: }
1045: {EndLine} { LLDBUG_PRL1("[SkipIF a CR]\n"); }
1046: [^\n]*$ { LLDBUG_PRL2("[SkipIF anything <IFcount=%d>]",IFcount); }
1047: }
1048: <S_NEXT_LINE>{
1049: ([.]*){EndLine} { /* this ignores everything until it hits an EoL */
1050: LLDBUG_PRL2("[<S_NEXT_LINE> skip \'%s\' until EoL]\n",yytext);
1051: BEGIN S_TEXT;
1052: }
1053: }
1054:
1055: <S_WHILE_SKIP>{
1056: ^{Spaces}"/WHILE"[^\n]*{EndLine} { Wcount++;
1057: LLDBUG_PRL2("[SkipWHILE /WHILE <Wcount=%d>]\n",Wcount);
1058: }
1059: ^{Spaces}"/ENDWHILE"[^\n]*{EndLine} {
1060: if(Wcount==0) {
1061: LLDBUG_PRL2("[SkipWHILE->/ENDWHILE <Wcount=%d>]\n",Wcount);
1062: BEGIN S_TEXT;
1063: } else {
1064: Wcount--;
1065: LLDBUG_PRL2("[SkipWHILE /ENDWHILE <Wcount=%d>]\n",Wcount);
1066: }
1067: }
1068: {EndLine} { LLDBUG_PRL1("[SkipWHILE a CR]\n"); }
1069: [^\n]*$ { LLDBUG_PRL2("[SkipWHILE anything <Wcount=%d>]",Wcount); }
1070: }
1071:
1072: <S_VERB>{
1073: ^{Spaces}"/ENDVERB" { LLDBUG_PRL1("[END VERB]\n");
1.4 albertel 1074: BEGIN S_TEXT;
1075: puts("\n</PRE>\n");
1076: end_mode();
1.1 albertel 1077: }
1.4 albertel 1078: .*|{EndLine} { send(yytext); }
1.1 albertel 1079: }
1080:
1081: %%
1082:
1083: /* ========================================================================================== */
1084: extern void
1085: begin_if_skip() { BEGIN S_IF_SKIP; }
1086:
1087: extern void
1088: begin_while_skip() { Wcount=0; While_idx--; /* while is FALSE, pop it out from stack */ BEGIN S_WHILE_SKIP; }
1089:
1090: extern void
1091: begin_next_line() { BEGIN S_NEXT_LINE; }
1092:
1093: extern void
1094: begin_var() { BEGIN S_VARIABLE; }
1095:
1096: extern void
1097: begin_let() { BEGIN S_LET; }
1098:
1099: extern void
1100: begin_def() { BEGIN S_DEFINE; }
1101:
1102: extern void
1103: begin_ans() { BEGIN S_ANSWER; }
1104:
1105: extern void
1106: begin_map() { BEGIN S_MAP; }
1107:
1108: extern void
1109: begin_ignore() { BEGIN S_IGNORE; }
1110:
1111: extern void
1112: begin_text() { BEGIN S_TEXT; }
1113:
1114: extern void
1115: begin_question() { LLDBUG_PR1("[<S_TEXT>]");
1116: IFcount = 0; While_idx=0; /* initialize some stacks */
1117: End_of_input = 0; YY_FLUSH_BUFFER; BEGIN S_TEXT; }
1118:
1119: extern void
1120: end_problemset() { End_of_input = 0; YY_FLUSH_BUFFER; BEGIN S_TEXT; }
1121:
1122:
1123: /* ========================================================================================== */
1124:
1125: #define NUM_KEY 2
1126: int
1127: match_keyword(key) char *key;
1128: {
1129: char *keyword[NUM_KEY] = {"/DIS", "/DIR" };
1130: int i;
1131:
1132: for(i=0;i < NUM_KEY; i++) {
1133: if( !strncmp(keyword[i], key, 4) ) {
1134: return (1);
1135: }
1136: }
1137: return (0);
1138: }
1139:
1140: int
1141: match_functionid(key) char *key;
1142: {
1143: char *keyword[NUM_KEY] = {"/DIS", "/DIR" };
1144: int i;
1145:
1146: for(i=0;i < NUM_KEY; i++) {
1147: if( !strncmp(keyword[i], key, 4) ) {
1148: return (1);
1149: }
1150: }
1151: return (0);
1152: }
1153: /* -------------------------------------------------------------------------- */
1154: /* -------------------------------------------------------------------------- */
1155:
1156: void init_funcstack()
1157: {
1158: int ii;
1159: for(ii=0;ii<Func_idx;ii++) {
1160: capa_mfree(FuncStack[ii].s_name);
1161: }
1162: Func_idx = 0;
1163: }
1164:
1165:
1166: /* -------------------------------------------------------------------------- */
1167: /* GET THE NEXT CHARACTER OF THE SOURCE FILE */
1168: /* -------------------------------------------------------------------------- */
1169:
1170: #ifdef FLEX
1171: int capaL_input()
1172: #else
1173: int /* RETURNS: next character */
1174: input() /* ARGUMENTS: (none) */
1175: #endif
1176:
1177: { /* LOCAL VARIABLES: */
1178: static int startup=1; /* First call flag */
1179:
1180: LLDBUG_PRL1("<<capaL_input() is called>>\n");
1181: if (!Lexi_line) { /* was startup */
1182: for(Input_idx=0;Input_idx < MAX_OPENED_FILE;Input_idx++) {
1183: /* for(ii=0;ii<LEX_BUFLEN;ii++) {
1184: Lexi_buf[Input_idx][ii]=0;
1185: }
1186: */
1187: Lexi_buf[Input_idx][0]=0;
1188: Lexi_pos[Input_idx] = 0;
1189: }
1190: Input_idx = 0;
1191: startup=0;
1192: yyin = Input_stream[Input_idx];
1193: }
1194: if (!Lexi_buf[Input_idx][Lexi_pos[Input_idx]]) {
1195: if (fgets(Lexi_buf[Input_idx],LEX_BUFLEN-1,Input_stream[Input_idx])==NULL) {
1196: /* EOF? */
1197: /* no use in flex
1198: printf("capaL_input()EOF %s\n",Opened_filename[Input_idx+1]); fflush(stdout); */
1199: return (0);
1200: }
1201: Lexi_pos[Input_idx] = 0;
1202: Lexi_line++;
1203: printf("input()(%d)\n",Lexi_line);
1204: }
1205: (Lexi_pos[Input_idx])++;
1206: return ( Lexi_buf[Input_idx][Lexi_pos[Input_idx]-1] );
1207: }
1208:
1209: /******************************************************************************/
1210: /* PUSH BACK ONE CHARACTER OF THE INPUT */
1211: /******************************************************************************/
1212:
1213: int /* RETURNS: nothing */
1214: capaL_unput(ch) /* ARGUMENTS: */
1215: register int ch; /* Character to push */
1216: {
1217: if (ch) (Lexi_pos[Input_idx])--;
1218:
1219: /* unput() stream cannot be re-defined */
1220: /* unput(ch); inconsistency between YY_INPUT() and internal matched yytext */
1221: return (0);
1222:
1223: }
1224:
1225:
1226: /******************************************************/
1227:
1228: #ifndef DMALLOC
1229:
1230: char *
1231: strsave(char *s)
1232: {
1233: char *p;
1234: if (s==NULL) {return s;}
1235: p=capa_malloc(strlen(s)+1,1);
1236: strcpy(p,s);
1237: return (p);
1238: }
1239:
1240: #endif
1241:
1242: /* =========================================================================== */
1243:
1244: #ifndef DMALLOC
1245: char *
1246: capa_malloc(unsigned num,unsigned sz)
1247: {
1248: char *p;
1249: p = calloc(num, sz);
1250: bzero(p, num*sz); /* added Jan 21 1998 */
1251: return (p);
1252: }
1253:
1254: #endif
1255:
1256: #ifndef DMALLOC
1257: void
1258: capa_mfree(p) char *p;
1259: {
1260: free(p);
1261: }
1262: #endif
1263:
1264: void
1265: capa_msg(int type, char *p)
1266: { int idx, i, j;
1267: int len;
1268: char warn_msg[WARN_MSG_LENGTH];
1269: char tmp_line[ONE_TWO_EIGHT];
1270: char *tmp_str;
1271:
1272: strcpy(warn_msg,"File: ");
1273: idx=6;
1274: for(i=0;i<=Input_idx;i++) {
1275: len=strlen(Opened_filename[i]);
1276: for(j=0;j<len;j++) {
1277: warn_msg[idx++] = Opened_filename[i][j];
1278: }
1279: if(i < Input_idx) {
1280: warn_msg[idx++]='-';
1281: warn_msg[idx++]='>';
1282: }
1283: warn_msg[idx]=0;
1284: }
1285: switch (type) {
1286: case MESSAGE_ERROR:
1287: sprintf(tmp_line,", Line %d: ERROR:", Current_line[Input_idx]);
1288: len=strlen(tmp_line);
1289: for(j=0;j<len;j++) {
1290: warn_msg[idx++] = tmp_line[j];
1291: }
1292: warn_msg[idx]=0;
1293: append_error(warn_msg); append_error(p);
1294: break;
1295: case MESSAGE_WARN:
1296: default:
1297: sprintf(tmp_line,", Line %d: WARNING:", Current_line[Input_idx]);
1298: len=strlen(tmp_line);
1299: for(j=0;j<len;j++) {
1300: warn_msg[idx++] = tmp_line[j];
1301: }
1302: warn_msg[idx]=0;
1303: j = strlen(warn_msg);
1304: len = strlen(p);
1305: tmp_str = (char *)capa_malloc(len+j+1,1);
1306: for(i=0;i<j;i++) {
1307: tmp_str[i]=warn_msg[i];
1308: }
1309: for(i=j;i<j+len;i++) {
1310: tmp_str[i] = p[i-j];
1311: }
1312: append_warn(type,tmp_str);
1313: capa_mfree(tmp_str);
1314: break;
1315: }
1316: }
1317:
1318: /* ======================================================================== */
1319: void
1320: capa_warn_header(int type)
1321: {
1322: int idx, i, j;
1323: int len;
1324: char warn_msg[WARN_MSG_LENGTH];
1325: char tmp_line[ONE_TWO_EIGHT];
1326:
1327: strcpy(warn_msg,"File: ");
1328: idx=6;
1329: for(i=0;i<=Input_idx;i++) {
1330: len=strlen(Opened_filename[i]);
1331: for(j=0;j<len;j++) {
1332: warn_msg[idx++] = Opened_filename[i][j];
1333: }
1334: if(i < Input_idx) {
1335: warn_msg[idx++]='-';
1336: warn_msg[idx++]='>';
1337: }
1338: warn_msg[idx]=0;
1339: }
1340: switch (type) {
1341: case MESSAGE_ERROR:
1342: sprintf(tmp_line,", Line %d: ERROR:", Current_line[Input_idx]);
1343:
1344: break;
1345: case MESSAGE_WARN:
1346: sprintf(tmp_line,", Line %d: WARNING:", Current_line[Input_idx]);break;
1347: default:
1348: sprintf(tmp_line,", Line %d: ERROR:", Current_line[Input_idx]);break;
1349: }
1350: len=strlen(tmp_line);
1351: for(j=0;j<len;j++) {
1352: warn_msg[idx++] = tmp_line[j];
1353: }
1354: warn_msg[idx]=0;
1355: append_error(warn_msg);
1356: }
1357:
1358: /* --------------------------------------------------------------------------- */
1359: #ifdef AVOIDYYINPUT
1360:
1361: void change_file(char *fname)
1362: {
1363: char warn_msg[WARN_MSG_LENGTH];
1364:
1365: if ( include_stack_ptr >= MAX_INCLUDE_DEPTH ) {
1366: sprintf(warn_msg,"Includes nested too deeply" );
1367: capa_msg(MESSAGE_ERROR,warn_msg);
1368: return;
1369: }
1370:
1371: include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER;
1372: yyin = fopen( fname, "r" );
1373: yy_switch_to_buffer( yy_create_buffer( yyin, YY_BUF_SIZE ) );
1374: }
1375:
1376: void
1377: parse_filename(char *line)
1378: {
1379: char *start, fname[MAX_BUFFER_SIZE], warn_msg[WARN_MSG_LENGTH];
1380: int ii,len;
1381:
1382: start = index(line, '\"'); /*** hpux complained */
1383: if( start == NULL ) {
1384: sprintf(warn_msg,"/IMP was not given a filename.\n");
1385: capa_msg(MESSAGE_ERROR,warn_msg);
1386: return;
1387: }
1388: start++; len = strlen(start) - 1;
1389: ii = 0;
1390: while( start[ii] != '\"' ) fname[ii++] = start[ii];
1391: fname[ii] = 0;
1392: LLDBUG_PR2("[parse_filename<%s>]\n",fname);
1393:
1394: change_file(fname);
1395: }
1396:
1397: void
1398: parse_import_id(char *line)
1399: {
1400: char fname[QUARTER_K], warn_msg[WARN_MSG_LENGTH];
1401: int ii, dup_open;
1402: Symbol *symb_p;
1403: int no_error = 0;
1404:
1405: ii = 0;
1406: while( line[ii] != '\0' && line[ii] != ' ' && line[ii] != '\n' && line[ii] != '\t' )
1407: fname[ii++] = line[ii];
1408: fname[ii] = 0;
1409:
1410: LLDBUG_PR2("[parse_import_id<%s>]\n",fname);
1411: /*symb_p = find_identifier(fname);*/
1412:
1413: switch (symb_p->s_type) {
1414: case IDENTIFIER:
1415: sprintf(warn_msg,"/IMP %s, var is not defined.\n", fname);
1416: capa_msg(MESSAGE_ERROR,warn_msg);
1417: break;
1418: case I_VAR: case I_CONSTANT: case R_VAR: case R_CONSTANT:
1419: sprintf(warn_msg,"var cannot be a number.\n");
1420: capa_msg(MESSAGE_ERROR,warn_msg);
1421: break;
1422: case S_VAR: case S_CONSTANT: sprintf(fname,"%s",symb_p->s_str);
1423: no_error = 1;
1424: break;
1425: }
1426: if( no_error ) change_file(fname);
1427: }
1428:
1429: #else
1430: void
1431: parse_filename(char *line)
1432: {
1433: char *start, fname[QUARTER_K], warn_msg[WARN_MSG_LENGTH];
1434: int ii, len, dup_open;
1435:
1436: /* printf("IMPORT %s\n", line); */
1437:
1438: start = index(line, '\"'); /*** hpux complained */
1439: if( start != NULL ) {
1440: start++; len = strlen(start) - 1;
1441: ii = 0;
1442: while( start[ii] != '\"' ) {
1443: fname[ii] = start[ii]; ii++;
1444: }
1445: fname[ii] = 0;
1446: LLDBUG_PR2("[parse_filename<%s>]\n",fname);
1447: if(Input_idx < (MAX_OPENED_FILE -1)) {
1448: dup_open = 0;
1449: /* -- no need to check duplicated opening a file
1450: for(ii=0;ii<Input_idx;ii++) {
1451: if(strcmp(Opened_filename[ii],fname)==0) {
1452: dup_open =1;
1453: }
1454: }
1455: */
1456: if( !dup_open ) {
1457: Input_idx++;
1458: Input_stream[Input_idx]=fopen(fname,"r");
1459: sprintf(Opened_filename[Input_idx], "%s",fname);
1460: Current_line[Input_idx] = 0;
1461: } else {
1462: /*
1463: sprintf(warn_msg,"/IMP \"%s\", import file has already been imported.\n",fname);
1464: capa_msg(MESSAGE_WARN,warn_msg);
1465: */
1466: Input_idx++;
1467: Input_stream[Input_idx]=fopen(fname,"r");
1468: sprintf(Opened_filename[Input_idx], "%s",fname);
1469: Current_line[Input_idx] = 0;
1470: }
1471: } else {
1472: sprintf(warn_msg,"/IMP more the %d levels deep ignoring further imports.\n",MAX_OPENED_FILE-1);
1473: capa_msg(MESSAGE_WARN,warn_msg);
1474: }
1475: } else {
1476: sprintf(warn_msg,"%s, is not a valid file name.\n",line);
1477: capa_msg(MESSAGE_ERROR,warn_msg);
1478: }
1479:
1480: }
1481:
1482: void
1483: parse_import_id(char *line)
1484: {
1485: char fname[QUARTER_K], warn_msg[WARN_MSG_LENGTH];
1486: int ii, dup_open;
1487: Symbol *symb_p;
1488: int no_error = 0;
1489:
1490: ii = 0;
1491: while (line[ii] != '\0' && line[ii] != ' ' && line[ii] != '\n' && line[ii] != '\t') {
1492: fname[ii] = line[ii]; ii++;
1493: }
1494: fname[ii] = 0;
1495: LLDBUG_PR2("[parse_import_id<%s>]\n",fname);
1496: /*symb_p = find_identifier(fname);*/
1497:
1498: switch (symb_p->s_type) {
1499: case IDENTIFIER:
1500: sprintf(warn_msg,"/IMP %s, var is not defined.\n", fname);
1501: capa_msg(MESSAGE_ERROR,warn_msg);
1502: break;
1503: case I_VAR: case I_CONSTANT: case R_VAR: case R_CONSTANT:
1504: sprintf(warn_msg,"var cannot be a number.\n");
1505: capa_msg(MESSAGE_ERROR,warn_msg);
1506: break;
1507: case S_VAR:
1508: case S_CONSTANT:
1509: sprintf(fname,"%s",symb_p->s_str);
1510: no_error = 1;
1511: break;
1512: }
1513: if( no_error ) {
1514: if(Input_idx < (MAX_OPENED_FILE -1) ) {
1515: dup_open = 0;
1516: /* no need to check duplicated opening a file
1517: for(ii=0;ii<Input_idx;ii++) {
1518: if(strcmp(Opened_filename[ii],fname)==0) dup_open =1;
1519: }
1520: */
1521: if( !dup_open ) {
1522: Input_idx++;
1523: Input_stream[Input_idx]=fopen(fname,"r");
1524: sprintf(Opened_filename[Input_idx], "%s",fname);
1525: Current_line[Input_idx] = 0;
1526: } else {
1527: /* NO warning on duplicated open a file
1528: sprintf(warn_msg,"/IMP \"%s\", file has already been imported.\n", fname);
1529: capa_msg(MESSAGE_WARN,warn_msg);
1530: */
1531: Input_idx++;
1532: Input_stream[Input_idx]=fopen(fname,"r");
1533: sprintf(Opened_filename[Input_idx], "%s",fname);
1534: Current_line[Input_idx] = 0;
1535: }
1536: } else {
1537: sprintf(warn_msg,"/IMP , too many files has been imported. The maximum is %d files.\n",
1538: MAX_OPENED_FILE-1);
1539: capa_msg(MESSAGE_WARN,warn_msg);
1540: }
1541: }
1542: }
1543: #endif /*AVOIDYYINPUT*/
1544:
1545: void append_dynamic_buf(new_str) char *new_str;
1546: {
1547: int ii,len;
1548:
1549: if(new_str==NULL) return;
1550: len=strlen(new_str);
1551: #ifdef LEX_DBUG
1552: printf("before: len %d; Dynamic_buf_cur %d; Dynamic_buf_max %d\n",
1553: len,Dynamic_buf_cur,Dynamic_buf_max);
1554: #endif /* LEX_DBUG */
1555: if (Dynamic_buf_cur+len+1>Dynamic_buf_max) {
1556: char *temp_text;
1557: Dynamic_buf_max=(Dynamic_buf_cur+len)*2;
1558: temp_text=(char*)capa_malloc(sizeof(char),Dynamic_buf_max);
1559: strncpy(temp_text,Dynamic_buf,Dynamic_buf_max);
1560: free(Dynamic_buf);
1561: Dynamic_buf=temp_text;
1562: }
1563: for(ii=0;ii<len;ii++) {
1564: Dynamic_buf[Dynamic_buf_cur+ii]=new_str[ii];
1565: }
1566: Dynamic_buf_cur += len;
1567: Dynamic_buf[Dynamic_buf_cur+1]='\0';
1568: #ifdef LEX_DBUG
1569: printf("after: len %d; Dynamic_buf_cur %d; Dynamic_buf_max %d\n",
1570: len,Dynamic_buf_cur,Dynamic_buf_max);
1571: printf("Dyn_buf %s; added %s\n",Dynamic_buf,new_str);
1572: #endif /* LEX_DBUG */
1573: }
1574:
1575: char* parser_status()
1576: {
1577: char *buf,small[SMALL_LINE_BUFFER];
1578: int i,j,totlen=0,len,idx=0;
1579:
1580: for(i=0;i<=Input_idx;i++) totlen+=strlen(Opened_filename[i])+6;
1581: buf=capa_malloc(sizeof(char),totlen);
1582: for(i=0;i<=Input_idx;i++) {
1583: len=strlen(Opened_filename[i]);
1584: for(j=0;j<len;j++) buf[idx++] = Opened_filename[i][j];
1585: buf[idx++] = ':';
1586: sprintf(small,"%d",Current_line[i]);
1587: len=strlen(small);
1588: for(j=0;j<len;j++) buf[idx++] = small[j];
1589: buf[idx++]=' ';
1590: buf[idx]='\0';
1591: }
1592: return buf;
1593: }
1594:
1595: void yyfatalerror(char*msg)
1596: {
1597: char warn_msg[WARN_MSG_LENGTH];
1598: sprintf(warn_msg,"Invalid character[\'%s\']\n",yytext);
1599: capa_msg(MESSAGE_ERROR,warn_msg);
1600: capa_msg(MESSAGE_ERROR,msg);
1601: }
1602: void yyerror(char* msg)
1603: {
1604: char warn_msg[WARN_MSG_LENGTH];
1605: sprintf(warn_msg,"%s\n",msg);
1606: capa_msg(MESSAGE_ERROR,warn_msg);
1607: }
1608:
1609: void newyy_input (char *buf,int *result,int max_size)
1610: { int ii, leng, out_of_char;
1611: if (!Lexi_line) { /* was startup */
1612: for(ii=0;ii < MAX_OPENED_FILE;ii++) {
1613: Lexi_buf[ii] = NULL;
1614: Lexi_pos[ii] = 0;
1615: Current_line[ii] = 0;
1616: }
1617: Input_idx = 0;
1618: first_run=0;
1619: yyin = Input_stream[Input_idx]; LIDBUG_PR1("<<yy_input() startup>>\n");
1620: }
1621: out_of_char = 0;
1622: if ( Lexi_buf[Input_idx] == NULL ) {
1623: Lexi_buf[Input_idx] = (char *)capa_malloc(sizeof(char)*LEX_BUFLEN+1,1); out_of_char=1;
1624: } else {
1625: if (!Lexi_buf[Input_idx][Lexi_pos[Input_idx]]) {
1626: /* test if the line buffer is empty or at the end */
1627: out_of_char=1;
1628: }
1629: }
1630: if( out_of_char ) {
1631: if (fgets(Lexi_buf[Input_idx],LEX_BUFLEN-1,Input_stream[Input_idx])==NULL) {
1632: /* read in one line */
1633: LIDBUG_PR2("<<yy_input() fgets() returns NULL, input index=%d>>\n",Input_idx);
1634: if( (Input_idx > 0) && ( Lexi_buf[Input_idx][Lexi_pos[Input_idx]] == '\0') ) {
1635: LIDBUG_PR2("<<yy_input() close an input stream, input index=%d>>\n",Input_idx);
1636: fclose(Input_stream[Input_idx]);
1637: capa_mfree((char *)Lexi_buf[Input_idx]);
1638: Lexi_buf[Input_idx] = NULL;
1639: Input_idx--;
1640: yyin = Input_stream[Input_idx];
1641: /* (Lexi_pos[Input_idx])++; */
1642: buf[0] = Lexi_buf[Input_idx][Lexi_pos[Input_idx]-1];
1643: *result = 1;
1644: } else {
1645: *result = YY_NULL; /* End of File */
1646: }
1647: } else { /* successfully read in one line */
1648: leng = strlen(Lexi_buf[Input_idx]);
1649: LIDBUG_PR3("<<yy_input() read into buffer a line(leng=%d), input index=%d>>\n",
1650: leng,Input_idx);
1651: Lexi_pos[Input_idx] = 0;
1652: Lexi_line++;
1653: Current_line[Input_idx]++;
1654: (Lexi_pos[Input_idx])++;
1655: buf[0] = Lexi_buf[Input_idx][Lexi_pos[Input_idx]-1];
1656: /* need to take care of return continuation conditions */
1657: /* so, we return to one-char-at-a-time approach */
1658: /* for(ii=0;ii<leng;ii++) { */
1659: /* buf[ii] = Lexi_buf[Input_idx][ii]; */
1660: /* } */
1661: /* buf[ii] = '\0'; */
1662: /* printf("YY_INPUT()(Lexi_line=%d,max size=%d)(%c)",Lexi_line,max_size,buf[0]); */
1663: *result = 1;
1664: }
1665: } else {
1666: /* LIDBUG_PR2("<<yy_input() increase Lexi_pos, input index=%d>>\n",Input_idx); */
1667: (Lexi_pos[Input_idx])++;
1668: buf[0] = Lexi_buf[Input_idx][Lexi_pos[Input_idx]-1];
1669: *result = 1;
1670: }
1671: if (Stop_Parser==1) *result = YY_NULL;
1672: }
1673:
1674: int capa_eof()
1675: {
1676: #ifdef AVOIDYYINPUT
1677: if ( --include_stack_ptr < 0 ) yyterminate();
1678: else {
1679: yy_delete_buffer( YY_CURRENT_BUFFER );
1680: yy_switch_to_buffer(include_stack[include_stack_ptr]);
1681: }
1682: #else
1683: if(Input_idx == 0) {
1684: fclose(Input_stream[Input_idx]);
1685: capa_mfree((char *)Lexi_buf[Input_idx]);
1686: /*free_problems(LexiProblem_p);*/
1687: LexiProblem_p=NULL;
1688: /* printf("\nCAPA EOF\n"); fflush(stdout); */
1689: }
1.4 albertel 1690: end_mode();
1.1 albertel 1691: return (0);
1692: #endif /*AVOIDYYINPUT*/
1693: }
1694: /* ------------ */
1695:
1696:
1697: /* =========================================================== */
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to capaLexerDef.flex CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / homework / CAPA-converter