]>
Commit | Line | Data |
---|---|---|
1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: wxexpr.cpp | |
3 | // Purpose: wxExpr | |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 04/01/98 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // For compilers that support precompilation, includes "wx/wx.h". | |
13 | #include "wx/wxprec.h" | |
14 | ||
15 | #ifdef __BORLANDC__ | |
16 | #pragma hdrstop | |
17 | #endif | |
18 | ||
19 | #include "wx/deprecated/setup.h" | |
20 | ||
21 | #if wxUSE_PROLOGIO | |
22 | ||
23 | #include <stdarg.h> | |
24 | #include <ctype.h> | |
25 | #include <string.h> | |
26 | ||
27 | #include "wx/utils.h" | |
28 | #include "wx/deprecated/expr.h" | |
29 | #include "wx/deprecated/wxexpr.h" | |
30 | ||
31 | #if !WXWIN_COMPATIBILITY_2_4 | |
32 | static inline wxChar* copystring(const wxChar* s) | |
33 | { return wxStrcpy(new wxChar[wxStrlen(s) + 1], s); } | |
34 | #endif | |
35 | ||
36 | extern "C" void add_expr(char *); | |
37 | extern "C" void LexFromFile(FILE *fd); | |
38 | extern "C" void LexFromString(char *buf); | |
39 | ||
40 | ||
41 | ||
42 | /* Rename all YACC/LEX stuff or we'll conflict with other | |
43 | * applications | |
44 | */ | |
45 | ||
46 | #define yyback PROIO_yyback | |
47 | #define yylook PROIO_yylook | |
48 | #define yywrap PROIO_yywrap | |
49 | #define yyoutput PROIO_yyoutput | |
50 | #define yylex PROIO_yylex | |
51 | #define yyerror PROIO_yyerror | |
52 | #define yyleng PROIO_yyleng | |
53 | #define yytext PROIO_yytext | |
54 | #define yymorfg PROIO_yymorfg | |
55 | #define yylineno PROIO_yylineno | |
56 | #define yytchar PROIO_yytchar | |
57 | #define yyin PROIO_yyin | |
58 | #define yyout PROIO_yyout | |
59 | #define yysvf PROIO_yysvf | |
60 | #define yyestate PROIO_yyestate | |
61 | #define yysvec PROIO_yysvec | |
62 | #define yybgin PROIO_yybgin | |
63 | #define yyprevious PROIO_yyprevious | |
64 | #define yylhs PROIO_yylhs | |
65 | #define yylen PROIO_yylen | |
66 | #define yydefred PROIO_yydefred | |
67 | #define yydgoto PROIO_yydgoto | |
68 | #define yysindex PROIO_yysindex | |
69 | #define yyrindex PROIO_yyrindex | |
70 | #define yygindex PROIO_yygindex | |
71 | #define yytable PROIO_yytable | |
72 | #define yycheck PROIO_yycheck | |
73 | #define yyname PROIO_yyname | |
74 | #define yyrule PROIO_yyrule | |
75 | #define yydebug PROIO_yydebug | |
76 | #define yynerrs PROIO_yynerrs | |
77 | #define yyerrflag PROIO_yyerrflag | |
78 | #define yychar PROIO_yychar | |
79 | #define yyvsp PROIO_yyvsp | |
80 | #define yyssp PROIO_yyssp | |
81 | #define yyval PROIO_yyval | |
82 | #define yylval PROIO_yylval | |
83 | #define yyss PROIO_yyss | |
84 | #define yyvs PROIO_yyvs | |
85 | #define yyparse PROIO_yyparse | |
86 | ||
87 | /* +++steve162e: more defines necessary */ | |
88 | #define yy_init_buffer PROIO_yy_init_buffer | |
89 | #define yy_create_buffer PROIO_yy_create_buffer | |
90 | #define yy_load_buffer_state PROIO_yy_load_buffer_state | |
91 | #define yyrestart PROIO_yyrestart | |
92 | #define yy_switch_to_buffer PROIO_yy_switch_to_buffer | |
93 | #define yy_delete_buffer PROIO_yy_delete_buffer | |
94 | /* ---steve162e */ | |
95 | ||
96 | /* WG 1/96: still more for flex 2.5 */ | |
97 | #define yy_scan_buffer PROIO_scan_buffer | |
98 | #define yy_scan_string PROIO_scan_string | |
99 | #define yy_scan_bytes PROIO_scan_bytes | |
100 | #define yy_flex_debug PROIO_flex_debug | |
101 | #define yy_flush_buffer PROIO_flush_buffer | |
102 | #if !defined(__VISAGECPP__) | |
103 | /* multiply defined??? */ | |
104 | #define yyleng PROIO_yyleng | |
105 | #define yytext PROIO_yytext | |
106 | #endif | |
107 | ||
108 | extern "C" WXDLLIMPEXP_DATA_DEPRECATED(FILE*) yyin; | |
109 | extern "C" WXDLLIMPEXP_DEPRECATED int yyparse(void); | |
110 | ||
111 | ||
112 | wxExprDatabase *thewxExprDatabase = NULL; | |
113 | wxExprErrorHandler currentwxExprErrorHandler; | |
114 | ||
115 | wxExpr::wxExpr(const wxString& functor) | |
116 | { | |
117 | type = wxExprList; | |
118 | next = NULL; | |
119 | last = NULL; | |
120 | value.first = NULL; | |
121 | ||
122 | wxExpr *pfunctor = new wxExpr(wxExprWord, functor); | |
123 | Append(pfunctor); | |
124 | client_data = NULL; | |
125 | } | |
126 | ||
127 | wxExpr::wxExpr(wxExprType the_type, const wxString& word_or_string) | |
128 | { | |
129 | type = the_type; | |
130 | ||
131 | switch (the_type) | |
132 | { | |
133 | case wxExprWord: | |
134 | value.word = copystring((const wxChar *)word_or_string); | |
135 | break; | |
136 | case wxExprString: | |
137 | value.string = copystring((const wxChar *)word_or_string); | |
138 | break; | |
139 | case wxExprList: | |
140 | last = NULL; | |
141 | value.first = NULL; | |
142 | break; | |
143 | case wxExprReal: | |
144 | case wxExprInteger: | |
145 | case wxExprNull: | |
146 | break; | |
147 | } | |
148 | client_data = NULL; | |
149 | next = NULL; | |
150 | } | |
151 | ||
152 | wxExpr::wxExpr(wxExprType the_type, wxChar *word_or_string, bool allocate) | |
153 | { | |
154 | type = the_type; | |
155 | ||
156 | switch (the_type) | |
157 | { | |
158 | case wxExprWord: | |
159 | value.word = allocate ? copystring(word_or_string) : word_or_string; | |
160 | break; | |
161 | case wxExprString: | |
162 | value.string = allocate ? copystring(word_or_string) : word_or_string; | |
163 | break; | |
164 | case wxExprList: | |
165 | last = NULL; | |
166 | value.first = NULL; | |
167 | break; | |
168 | case wxExprReal: | |
169 | case wxExprInteger: | |
170 | case wxExprNull: | |
171 | break; | |
172 | } | |
173 | client_data = NULL; | |
174 | next = NULL; | |
175 | } | |
176 | ||
177 | wxExpr::wxExpr(long the_integer) | |
178 | { | |
179 | type = wxExprInteger; | |
180 | value.integer = the_integer; | |
181 | client_data = NULL; | |
182 | next = NULL; | |
183 | } | |
184 | ||
185 | wxExpr::wxExpr(double the_real) | |
186 | { | |
187 | type = wxExprReal; | |
188 | value.real = the_real; | |
189 | client_data = NULL; | |
190 | next = NULL; | |
191 | } | |
192 | ||
193 | wxExpr::wxExpr(wxList *the_list) | |
194 | { | |
195 | type = wxExprList; | |
196 | client_data = NULL; | |
197 | last = NULL; | |
198 | value.first = NULL; | |
199 | ||
200 | wxExpr *listExpr = new wxExpr(wxExprList); | |
201 | ||
202 | wxNode *node = the_list->GetFirst(); | |
203 | while (node) | |
204 | { | |
205 | wxExpr *expr = (wxExpr *)node->GetData(); | |
206 | listExpr->Append(expr); | |
207 | node = node->GetNext(); | |
208 | } | |
209 | Append(listExpr); | |
210 | ||
211 | delete the_list; | |
212 | } | |
213 | ||
214 | wxExpr::~wxExpr(void) | |
215 | { | |
216 | switch (type) | |
217 | { | |
218 | case wxExprInteger: | |
219 | case wxExprReal: | |
220 | { | |
221 | break; | |
222 | } | |
223 | case wxExprString: | |
224 | { | |
225 | delete[] value.string; | |
226 | break; | |
227 | } | |
228 | case wxExprWord: | |
229 | { | |
230 | delete[] value.word; | |
231 | break; | |
232 | } | |
233 | case wxExprList: | |
234 | { | |
235 | wxExpr *expr = value.first; | |
236 | while (expr) | |
237 | { | |
238 | wxExpr *expr1 = expr->next; | |
239 | ||
240 | delete expr; | |
241 | expr = expr1; | |
242 | } | |
243 | break; | |
244 | } | |
245 | case wxExprNull: break; | |
246 | } | |
247 | } | |
248 | ||
249 | void wxExpr::Append(wxExpr *expr) | |
250 | { | |
251 | if (!value.first) | |
252 | value.first = expr; | |
253 | ||
254 | if (last) | |
255 | last->next = expr; | |
256 | last = expr; | |
257 | } | |
258 | ||
259 | void wxExpr::Insert(wxExpr *expr) | |
260 | { | |
261 | expr->next = value.first; | |
262 | value.first = expr; | |
263 | ||
264 | if (!last) | |
265 | last = expr; | |
266 | } | |
267 | ||
268 | wxExpr *wxExpr::Copy(void) const | |
269 | { | |
270 | // This seems to get round an optimizer bug when | |
271 | // using Watcom C++ 10a in WIN32 compilation mode. | |
272 | // If these lines not present, the type seems to be | |
273 | // interpreted wrongly as an integer. | |
274 | // I don't want to turn optimization off since it's needed | |
275 | // for reading in files quickly. | |
276 | #if defined(__WATCOMC__) | |
277 | char buf[2]; | |
278 | sprintf(buf, ""); | |
279 | #endif | |
280 | ||
281 | switch (type) | |
282 | { | |
283 | case wxExprInteger: | |
284 | return new wxExpr(value.integer); | |
285 | case wxExprReal: | |
286 | return new wxExpr(value.real); | |
287 | case wxExprString: | |
288 | return new wxExpr(wxExprString, wxString(value.string)); | |
289 | case wxExprWord: | |
290 | return new wxExpr(wxExprWord, wxString(value.word)); | |
291 | case wxExprList: | |
292 | { | |
293 | wxExpr *expr = value.first; | |
294 | wxExpr *new_list = new wxExpr(wxExprList); | |
295 | while (expr) | |
296 | { | |
297 | wxExpr *expr2 = expr->Copy(); | |
298 | new_list->Append(expr2); | |
299 | expr = expr->next; | |
300 | } | |
301 | return new_list; | |
302 | } | |
303 | case wxExprNull: | |
304 | break; | |
305 | } | |
306 | return NULL; | |
307 | } | |
308 | ||
309 | ||
310 | // Get the wxExpr (containing (= wxExpr Value) form) for the given word | |
311 | // or string, assuming that we have Attribute=Value, ... | |
312 | wxExpr *wxExpr::GetAttributeValueNode(const wxString& word) const // Use only for a clause or list | |
313 | { | |
314 | if (type != wxExprList) | |
315 | return NULL; | |
316 | ||
317 | wxExpr *expr = value.first; | |
318 | while (expr) | |
319 | { | |
320 | if (expr->type == wxExprList) | |
321 | { | |
322 | wxExpr *firstNode = expr->value.first; | |
323 | if ((firstNode->type == wxExprWord) && (firstNode->value.word[0] == '=')) | |
324 | { | |
325 | wxExpr *secondNode = firstNode->next; | |
326 | if ((secondNode->type == wxExprWord) && | |
327 | (wxStrcmp((const wxChar *)word, secondNode->value.word) == 0)) | |
328 | { | |
329 | return expr; | |
330 | } | |
331 | } | |
332 | } | |
333 | expr = expr->next; | |
334 | } | |
335 | return NULL; | |
336 | } | |
337 | ||
338 | // Get the value (in wxExpr form) for the given word or string, assuming | |
339 | // that we have Attribute=Value, ... | |
340 | wxExpr *wxExpr::AttributeValue(const wxString& word) const // Use only for a clause or list | |
341 | { | |
342 | if (type != wxExprList) | |
343 | return NULL; | |
344 | ||
345 | wxExpr *attExpr = GetAttributeValueNode(word); | |
346 | if (attExpr && attExpr->value.first && attExpr->value.first->next) | |
347 | return attExpr->value.first->next->next; | |
348 | else return NULL; | |
349 | } | |
350 | ||
351 | wxString wxExpr::Functor(void) const // Use only for a clause | |
352 | { | |
353 | if ((type != wxExprList) || !value.first) | |
354 | return wxString(wxT("")); | |
355 | ||
356 | if (value.first->type == wxExprWord) | |
357 | return wxString(value.first->value.word); | |
358 | else | |
359 | return wxString(wxT("")); | |
360 | } | |
361 | ||
362 | bool wxExpr::IsFunctor(const wxString& f) const // Use only for a clause | |
363 | { | |
364 | if ((type != wxExprList) || !value.first) | |
365 | return false; | |
366 | ||
367 | return (value.first->type == wxExprWord && | |
368 | (wxStrcmp((const wxChar *)f, value.first->value.word) == 0)); | |
369 | } | |
370 | ||
371 | // Return nth argument of a clause (starting from 1) | |
372 | wxExpr *wxExpr::Arg(wxExprType theType, int arg) const | |
373 | { | |
374 | wxExpr *expr = value.first; | |
375 | int i; | |
376 | for (i = 1; i < arg; i++) | |
377 | if (expr) | |
378 | expr = expr->next; | |
379 | ||
380 | if (expr && (expr->type == theType)) | |
381 | return expr; | |
382 | else | |
383 | return NULL; | |
384 | } | |
385 | ||
386 | // Return nth argument of a list expression (starting from zero) | |
387 | wxExpr *wxExpr::Nth(int arg) const | |
388 | { | |
389 | if (type != wxExprList) | |
390 | return NULL; | |
391 | ||
392 | wxExpr *expr = value.first; | |
393 | int i; | |
394 | for (i = 0; i < arg; i++) | |
395 | if (expr) | |
396 | expr = expr->next; | |
397 | else return NULL; | |
398 | ||
399 | if (expr) | |
400 | return expr; | |
401 | else | |
402 | return NULL; | |
403 | } | |
404 | ||
405 | // Returns the number of elements in a list expression | |
406 | int wxExpr::Number(void) const | |
407 | { | |
408 | if (type != wxExprList) | |
409 | return 0; | |
410 | ||
411 | int i = 0; | |
412 | wxExpr *expr = value.first; | |
413 | while (expr) | |
414 | { | |
415 | expr = expr->next; | |
416 | i ++; | |
417 | } | |
418 | return i; | |
419 | } | |
420 | ||
421 | void wxExpr::DeleteAttributeValue(const wxString& attribute) | |
422 | { | |
423 | if (type != wxExprList) | |
424 | return; | |
425 | ||
426 | wxExpr *expr = value.first; | |
427 | wxExpr *lastExpr = this; | |
428 | while (expr) | |
429 | { | |
430 | if (expr->type == wxExprList) | |
431 | { | |
432 | wxExpr *firstNode = expr->value.first; | |
433 | if ((firstNode->type == wxExprWord) && (firstNode->value.word[0] == '=')) | |
434 | { | |
435 | wxExpr *secondNode = firstNode->next; | |
436 | if ((secondNode->type == wxExprWord) && | |
437 | (wxStrcmp((const wxChar *)attribute, secondNode->value.word) == 0)) | |
438 | { | |
439 | wxExpr *nextExpr = expr->next; | |
440 | delete expr; | |
441 | ||
442 | lastExpr->next = nextExpr; | |
443 | ||
444 | if (last == expr) | |
445 | last = lastExpr; | |
446 | ||
447 | return; | |
448 | } | |
449 | } | |
450 | } | |
451 | lastExpr = expr; | |
452 | expr = expr->next; | |
453 | } | |
454 | return; | |
455 | } | |
456 | ||
457 | void wxExpr::AddAttributeValue(const wxString& attribute, wxExpr *val) | |
458 | { | |
459 | if (type != wxExprList) | |
460 | { | |
461 | // cout << "Error! tried to add an attribute-value pair to a nonlist wxExpr expression\n"; | |
462 | return; | |
463 | } | |
464 | // Warning - existing code may assume that any existing value | |
465 | // is deleted first. For efficiency, we leave this to the application. | |
466 | // DeleteAttributeValue(attribute); | |
467 | ||
468 | wxExpr *patt = new wxExpr(wxExprWord, attribute); | |
469 | wxExpr *pequals = new wxExpr(wxExprWord, wxT("=")); | |
470 | ||
471 | wxExpr *listExpr = new wxExpr(wxExprList); | |
472 | ||
473 | listExpr->Append(pequals); | |
474 | listExpr->Append(patt); | |
475 | listExpr->Append(val); | |
476 | ||
477 | Append(listExpr); | |
478 | } | |
479 | ||
480 | void wxExpr::AddAttributeValue(const wxString& attribute, long val) | |
481 | { | |
482 | if (type != wxExprList) | |
483 | { | |
484 | // cout << "Error! tried to add an attribute-value pair to a nonlist wxExpr expression\n"; | |
485 | return; | |
486 | } | |
487 | // Warning - existing code may assume that any existing value | |
488 | // is deleted first. For efficiency, we leave this to the application. | |
489 | // DeleteAttributeValue(attribute); | |
490 | ||
491 | wxExpr *patt = new wxExpr(wxExprWord, attribute); | |
492 | wxExpr *pval = new wxExpr(val); | |
493 | wxExpr *pequals = new wxExpr(wxExprWord, wxT("=")); | |
494 | ||
495 | wxExpr *listExpr = new wxExpr(wxExprList); | |
496 | ||
497 | listExpr->Append(pequals); | |
498 | listExpr->Append(patt); | |
499 | listExpr->Append(pval); | |
500 | ||
501 | Append(listExpr); | |
502 | } | |
503 | ||
504 | void wxExpr::AddAttributeValue(const wxString& attribute, double val) | |
505 | { | |
506 | if (type != wxExprList) | |
507 | { | |
508 | // cout << "Error! tried to add an attribute-value pair to a nonlist wxExpr expression\n"; | |
509 | return; | |
510 | } | |
511 | ||
512 | // DeleteAttributeValue(attribute); | |
513 | wxExpr *patt = new wxExpr(wxExprWord, attribute); | |
514 | wxExpr *pval = new wxExpr(val); | |
515 | wxExpr *pequals = new wxExpr(wxExprWord, wxT("=")); | |
516 | ||
517 | wxExpr *listExpr = new wxExpr(wxExprList); | |
518 | ||
519 | listExpr->Append(pequals); | |
520 | listExpr->Append(patt); | |
521 | listExpr->Append(pval); | |
522 | ||
523 | Append(listExpr); | |
524 | } | |
525 | ||
526 | void wxExpr::AddAttributeValueString(const wxString& attribute, const wxString& val) | |
527 | { | |
528 | if (type != wxExprList) | |
529 | { | |
530 | // cout << "Error! tried to add an attribute-value pair to a nonlist wxExpr expression\n"; | |
531 | return; | |
532 | } | |
533 | ||
534 | // DeleteAttributeValue(attribute); | |
535 | ||
536 | wxExpr *patt = new wxExpr(wxExprWord, attribute); | |
537 | wxExpr *pval = new wxExpr(wxExprString, val); | |
538 | wxExpr *pequals = new wxExpr(wxExprWord, wxT("=")); | |
539 | ||
540 | wxExpr *listExpr = new wxExpr(wxExprList); | |
541 | ||
542 | listExpr->Append(pequals); | |
543 | listExpr->Append(patt); | |
544 | listExpr->Append(pval); | |
545 | ||
546 | Append(listExpr); | |
547 | } | |
548 | ||
549 | void wxExpr::AddAttributeValueWord(const wxString& attribute, const wxString& val) | |
550 | { | |
551 | if (type != wxExprList) | |
552 | { | |
553 | // cout << "Error! tried to add an attribute-value pair to a nonlist wxExpr expression\n"; | |
554 | return; | |
555 | } | |
556 | ||
557 | // DeleteAttributeValue(attribute); | |
558 | ||
559 | wxExpr *patt = new wxExpr(wxExprWord, attribute); | |
560 | wxExpr *pval = new wxExpr(wxExprWord, val); | |
561 | wxExpr *pequals = new wxExpr(wxExprWord, wxT("=")); | |
562 | ||
563 | wxExpr *listExpr = new wxExpr(wxExprList); | |
564 | ||
565 | listExpr->Append(pequals); | |
566 | listExpr->Append(patt); | |
567 | listExpr->Append(pval); | |
568 | ||
569 | Append(listExpr); | |
570 | } | |
571 | ||
572 | void wxExpr::AddAttributeValue(const wxString& attribute, wxList *val) | |
573 | { | |
574 | if (type != wxExprList) | |
575 | { | |
576 | // cout << "Error! tried to add an attribute-value pair to a nonlist wxExpr expression\n"; | |
577 | return; | |
578 | } | |
579 | if (!val) | |
580 | return; | |
581 | ||
582 | // DeleteAttributeValue(attribute); | |
583 | ||
584 | wxExpr *patt = new wxExpr(wxExprWord, attribute); | |
585 | wxExpr *pval = new wxExpr(val); | |
586 | wxExpr *pequals = new wxExpr(wxExprWord, wxT("=")); | |
587 | ||
588 | wxExpr *listExpr = new wxExpr(wxExprList); | |
589 | ||
590 | listExpr->Append(pequals); | |
591 | listExpr->Append(patt); | |
592 | listExpr->Append(pval); | |
593 | ||
594 | Append(listExpr); | |
595 | } | |
596 | ||
597 | void wxExpr::AddAttributeValueStringList(const wxString& attribute, wxList *string_list) | |
598 | { | |
599 | if (type != wxExprList) | |
600 | { | |
601 | // cout << "Error! tried to add an attribute-value pair to a nonlist wxExpr expression\n"; | |
602 | return; | |
603 | } | |
604 | if (!string_list) | |
605 | return; | |
606 | ||
607 | // DeleteAttributeValue(attribute); | |
608 | ||
609 | // First make a list of wxExpr strings | |
610 | wxExpr *listExpr = new wxExpr(wxExprList); | |
611 | wxNode *node = string_list->GetFirst(); | |
612 | while (node) | |
613 | { | |
614 | wxChar *string = (wxChar*)node->GetData(); | |
615 | wxExpr *expr = new wxExpr(wxExprString, wxString(string)); | |
616 | listExpr->Append(expr); | |
617 | node = node->GetNext(); | |
618 | } | |
619 | ||
620 | // Now make an (=, Att, Value) triple | |
621 | wxExpr *patt = new wxExpr(wxExprWord, attribute); | |
622 | wxExpr *pequals = new wxExpr(wxExprWord, wxT("=")); | |
623 | ||
624 | wxExpr *listExpr2 = new wxExpr(wxExprList); | |
625 | ||
626 | listExpr2->Append(pequals); | |
627 | listExpr2->Append(patt); | |
628 | listExpr2->Append(listExpr); | |
629 | ||
630 | Append(listExpr2); | |
631 | } | |
632 | ||
633 | bool wxExpr::GetAttributeValue(const wxString& att, int& var) const | |
634 | { | |
635 | wxExpr *expr = AttributeValue(att); | |
636 | ||
637 | if (expr && (expr->Type() == wxExprInteger || expr->Type() == wxExprReal)) | |
638 | { | |
639 | var = (int)(expr->IntegerValue()); | |
640 | return true; | |
641 | } | |
642 | else | |
643 | return false; | |
644 | } | |
645 | ||
646 | bool wxExpr::GetAttributeValue(const wxString& att, long& var) const | |
647 | { | |
648 | wxExpr *expr = AttributeValue(att); | |
649 | ||
650 | if (expr && (expr->Type() == wxExprInteger || expr->Type() == wxExprReal)) | |
651 | { | |
652 | var = expr->IntegerValue(); | |
653 | return true; | |
654 | } | |
655 | else | |
656 | return false; | |
657 | } | |
658 | ||
659 | bool wxExpr::GetAttributeValue(const wxString& att, float& var) const | |
660 | { | |
661 | wxExpr *expr = AttributeValue(att); | |
662 | if (expr && (expr->Type() == wxExprInteger || expr->Type() == wxExprReal)) | |
663 | { | |
664 | var = (float) expr->RealValue(); | |
665 | return true; | |
666 | } | |
667 | else | |
668 | return false; | |
669 | } | |
670 | ||
671 | bool wxExpr::GetAttributeValue(const wxString& att, double& var) const | |
672 | { | |
673 | wxExpr *expr = AttributeValue(att); | |
674 | if (expr && (expr->Type() == wxExprInteger || expr->Type() == wxExprReal)) | |
675 | { | |
676 | var = expr->RealValue(); | |
677 | return true; | |
678 | } | |
679 | else | |
680 | return false; | |
681 | } | |
682 | ||
683 | bool wxExpr::GetAttributeValue(const wxString& att, wxString& var) const // Word OR string -> string | |
684 | { | |
685 | wxExpr *expr = AttributeValue(att); | |
686 | if (expr && expr->Type() == wxExprWord) | |
687 | { | |
688 | var = expr->WordValue(); | |
689 | return true; | |
690 | } | |
691 | else if (expr && expr->Type() == wxExprString) | |
692 | { | |
693 | var = expr->StringValue(); | |
694 | return true; | |
695 | } | |
696 | else | |
697 | return false; | |
698 | } | |
699 | ||
700 | bool wxExpr::GetAttributeValue(const wxString& att, wxExpr **var) const | |
701 | { | |
702 | wxExpr *expr = AttributeValue(att); | |
703 | if (expr) | |
704 | { | |
705 | *var = expr; | |
706 | return true; | |
707 | } | |
708 | else | |
709 | return false; | |
710 | } | |
711 | ||
712 | bool wxExpr::GetAttributeValueStringList(const wxString& att, wxList *var) const | |
713 | { | |
714 | wxExpr *expr = AttributeValue(att); | |
715 | if (expr && expr->Type() == wxExprList) | |
716 | { | |
717 | wxExpr *string_expr = expr->value.first; | |
718 | while (string_expr) | |
719 | { | |
720 | if (string_expr->Type() == wxExprString) | |
721 | var->Append((wxObject *)copystring(string_expr->StringValue())); | |
722 | ||
723 | string_expr = string_expr->next; | |
724 | } | |
725 | return true; | |
726 | } | |
727 | else | |
728 | return false; | |
729 | } | |
730 | ||
731 | // Compatibility | |
732 | void wxExpr::AssignAttributeValue(wxChar *att, wxChar **var) const | |
733 | { | |
734 | wxString str; | |
735 | if (GetAttributeValue(att, str)) | |
736 | { | |
737 | if (*var) | |
738 | delete[] *var; | |
739 | *var = copystring((const wxChar *) str); | |
740 | } | |
741 | } | |
742 | ||
743 | void wxExpr::WriteClause(FILE* stream) // Write this expression as a top-level clause | |
744 | { | |
745 | if (type != wxExprList) | |
746 | return; | |
747 | ||
748 | wxExpr *node = value.first; | |
749 | if (node) | |
750 | { | |
751 | node->WriteExpr(stream); | |
752 | fprintf( stream, "(" ); | |
753 | node = node->next; | |
754 | bool first = true; | |
755 | while (node) | |
756 | { | |
757 | if (!first) | |
758 | fprintf( stream, " " ); | |
759 | node->WriteExpr(stream); | |
760 | node = node->next; | |
761 | if (node) | |
762 | fprintf( stream, ",\n" ); | |
763 | first = false; | |
764 | } | |
765 | fprintf( stream, ").\n\n" ); | |
766 | } | |
767 | } | |
768 | ||
769 | void wxExpr::WriteExpr(FILE* stream) // Write as any other subexpression | |
770 | { | |
771 | // This seems to get round an optimizer bug when | |
772 | // using Watcom C++ 10a in WIN32 compilation mode. | |
773 | // If these lines not present, the type seems to be | |
774 | // interpreted wrongly as an integer. | |
775 | // I don't want to turn optimization off since it's needed | |
776 | // for reading in files quickly. | |
777 | #if defined(__WATCOMC__) | |
778 | char buf[2]; | |
779 | sprintf(buf, ""); | |
780 | #endif | |
781 | ||
782 | switch (type) | |
783 | { | |
784 | case wxExprInteger: | |
785 | { | |
786 | fprintf( stream, "%ld", value.integer ); | |
787 | break; | |
788 | } | |
789 | case wxExprReal: | |
790 | { | |
791 | double f = value.real; | |
792 | fprintf( stream, "%.6g", f); | |
793 | break; | |
794 | } | |
795 | case wxExprString: | |
796 | { | |
797 | fprintf( stream, "\"" ); | |
798 | size_t i; | |
799 | const wxWX2MBbuf val = wxConvLibc.cWX2MB(value.string); | |
800 | size_t len = strlen(val); | |
801 | for (i = 0; i < len; i++) | |
802 | { | |
803 | char ch = val[i]; | |
804 | if (ch == '"' || ch == '\\') | |
805 | fprintf( stream, "\\" ); | |
806 | char tmp[2]; | |
807 | tmp[0] = ch; | |
808 | tmp[1] = 0; | |
809 | fprintf( stream, tmp ); | |
810 | } | |
811 | fprintf( stream, "\"" ); | |
812 | break; | |
813 | } | |
814 | case wxExprWord: | |
815 | { | |
816 | bool quote_it = false; | |
817 | const wxWX2MBbuf val = wxConvLibc.cWX2MB(value.word); | |
818 | size_t len = strlen(val); | |
819 | if ((len == 0) || (len > 0 && (val[(size_t) 0] > 64 && val[(size_t) 0] < 91))) | |
820 | quote_it = true; | |
821 | else | |
822 | { | |
823 | size_t i; | |
824 | for (i = 0; i < len; i++) | |
825 | if ((!isalpha(val[i])) && (!isdigit(val[i])) && | |
826 | (val[i] != '_')) | |
827 | { quote_it = true; i = len; } | |
828 | } | |
829 | ||
830 | if (quote_it) | |
831 | fprintf( stream ,"'" ); | |
832 | ||
833 | fprintf( stream, val ); | |
834 | ||
835 | if (quote_it) | |
836 | fprintf( stream, "'" ); | |
837 | ||
838 | break; | |
839 | } | |
840 | case wxExprList: | |
841 | { | |
842 | if (!value.first) | |
843 | fprintf( stream, "[]" ); | |
844 | else | |
845 | { | |
846 | wxExpr *expr = value.first; | |
847 | ||
848 | if ((expr->Type() == wxExprWord) && (wxStrcmp(expr->WordValue(), wxT("=")) == 0)) | |
849 | { | |
850 | wxExpr *arg1 = expr->next; | |
851 | wxExpr *arg2 = arg1->next; | |
852 | arg1->WriteExpr(stream); | |
853 | fprintf( stream, " = " ); | |
854 | arg2->WriteExpr(stream); | |
855 | } | |
856 | else | |
857 | { | |
858 | fprintf( stream, "[" ); | |
859 | while (expr) | |
860 | { | |
861 | expr->WriteExpr(stream); | |
862 | expr = expr->next; | |
863 | if (expr) | |
864 | fprintf( stream, ", " ); | |
865 | } | |
866 | fprintf( stream, "]" ); | |
867 | } | |
868 | } | |
869 | break; | |
870 | } | |
871 | case wxExprNull: break; | |
872 | } | |
873 | } | |
874 | ||
875 | /* | |
876 | * wxExpr 'database' (list of expressions) | |
877 | */ | |
878 | ||
879 | IMPLEMENT_DYNAMIC_CLASS(wxExprDatabase, wxList) | |
880 | ||
881 | wxExprDatabase::wxExprDatabase(wxExprErrorHandler handler) | |
882 | { | |
883 | position = NULL; | |
884 | hash_table = NULL; | |
885 | currentwxExprErrorHandler = handler; | |
886 | noErrors = 0; | |
887 | } | |
888 | ||
889 | wxExprDatabase::wxExprDatabase(wxExprType type, const wxString& attribute, int size, | |
890 | wxExprErrorHandler handler) | |
891 | { | |
892 | position = NULL; | |
893 | attribute_to_hash = attribute; | |
894 | if (type == wxExprString) | |
895 | hash_table = new wxHashTable(wxKEY_STRING, size); | |
896 | else if (type == wxExprInteger) | |
897 | hash_table = new wxHashTable(wxKEY_INTEGER, size); | |
898 | else hash_table = NULL; | |
899 | ||
900 | currentwxExprErrorHandler = handler; | |
901 | noErrors = 0; | |
902 | } | |
903 | ||
904 | wxExprDatabase::~wxExprDatabase(void) | |
905 | { | |
906 | ClearDatabase(); | |
907 | if (hash_table) | |
908 | delete hash_table; | |
909 | } | |
910 | ||
911 | void wxExprDatabase::BeginFind(void) // Initialise a search | |
912 | { | |
913 | position = GetFirst(); | |
914 | } | |
915 | ||
916 | wxExpr *wxExprDatabase::FindClause(long id) // Find a term based on an integer id attribute | |
917 | // e.g. node(id=23, type=rectangle, ....). | |
918 | { | |
919 | wxExpr *found = NULL; | |
920 | while (position && !found) | |
921 | { | |
922 | wxExpr *term = (wxExpr *)position->GetData(); | |
923 | ||
924 | if (term->Type() == wxExprList) | |
925 | { | |
926 | wxExpr *value = term->AttributeValue(wxT("id")); | |
927 | if (value->Type() == wxExprInteger && value->IntegerValue() == id) | |
928 | found = term; | |
929 | } | |
930 | position = position->GetNext(); | |
931 | } | |
932 | return found; | |
933 | } | |
934 | ||
935 | // Find on basis of attribute/value pairs, e.g. type=rectangle | |
936 | wxExpr *wxExprDatabase::FindClause(const wxString& word, const wxString& val) | |
937 | { | |
938 | wxExpr *found = NULL; | |
939 | while (position && !found) | |
940 | { | |
941 | wxExpr *term = (wxExpr *)position->GetData(); | |
942 | ||
943 | if (term->Type() == wxExprList) | |
944 | { | |
945 | wxExpr *value = term->AttributeValue(word); | |
946 | if ((value->Type() == wxExprWord && value->WordValue() == val) || | |
947 | (value->Type() == wxExprString && value->StringValue() == val)) | |
948 | found = term; | |
949 | } | |
950 | position = position->GetNext(); | |
951 | } | |
952 | return found; | |
953 | } | |
954 | ||
955 | wxExpr *wxExprDatabase::FindClause(const wxString& word, long val) | |
956 | { | |
957 | wxExpr *found = NULL; | |
958 | while (position && !found) | |
959 | { | |
960 | wxExpr *term = (wxExpr *)position->GetData(); | |
961 | ||
962 | if (term->Type() == wxExprList) | |
963 | { | |
964 | wxExpr *value = term->AttributeValue(word); | |
965 | if ((value->Type() == wxExprInteger) && (value->IntegerValue() == val)) | |
966 | found = term; | |
967 | } | |
968 | position = position->GetNext(); | |
969 | } | |
970 | return found; | |
971 | } | |
972 | ||
973 | wxExpr *wxExprDatabase::FindClause(const wxString& word, double val) | |
974 | { | |
975 | wxExpr *found = NULL; | |
976 | while (position && !found) | |
977 | { | |
978 | wxExpr *term = (wxExpr *)position->GetData(); | |
979 | ||
980 | if (term->Type() == wxExprList) | |
981 | { | |
982 | wxExpr *value = term->AttributeValue(word); | |
983 | if ((value->Type() == wxExprReal) && (value->RealValue() == val)) | |
984 | found = term; | |
985 | } | |
986 | position = position->GetNext(); | |
987 | } | |
988 | return found; | |
989 | } | |
990 | ||
991 | wxExpr *wxExprDatabase::FindClauseByFunctor(const wxString& functor) | |
992 | { | |
993 | wxExpr *found = NULL; | |
994 | while (position && !found) | |
995 | { | |
996 | wxExpr *term = (wxExpr *)position->GetData(); | |
997 | ||
998 | if (term->Type() == wxExprList) | |
999 | { | |
1000 | if (term->Functor() == functor) | |
1001 | found = term; | |
1002 | } | |
1003 | position = position->GetNext(); | |
1004 | } | |
1005 | return found; | |
1006 | } | |
1007 | ||
1008 | // If hashing is on, must store in hash table too | |
1009 | void wxExprDatabase::Append(wxExpr *clause) | |
1010 | { | |
1011 | wxList::Append((wxObject *)clause); | |
1012 | if (hash_table) | |
1013 | { | |
1014 | wxString functor(clause->Functor()); | |
1015 | wxExpr *expr = clause->AttributeValue(attribute_to_hash); | |
1016 | if (expr) | |
1017 | { | |
1018 | long functor_key = hash_table->MakeKey(WXSTRINGCAST functor); | |
1019 | long value_key; | |
1020 | if (expr && expr->Type() == wxExprString) | |
1021 | { | |
1022 | value_key = hash_table->MakeKey(WXSTRINGCAST expr->StringValue()); | |
1023 | hash_table->Put(functor_key + value_key, WXSTRINGCAST expr->StringValue(), (wxObject *)clause); | |
1024 | } | |
1025 | else if (expr && expr->Type() == wxExprInteger) | |
1026 | { | |
1027 | value_key = expr->IntegerValue(); | |
1028 | hash_table->Put(functor_key + value_key, expr->IntegerValue(), (wxObject *)clause); | |
1029 | } | |
1030 | ||
1031 | } | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | wxExpr *wxExprDatabase::HashFind(const wxString& functor, long value) const | |
1036 | { | |
1037 | long key = hash_table->MakeKey(WXSTRINGCAST functor) + value; | |
1038 | ||
1039 | // The key alone isn't guaranteed to be unique: | |
1040 | // must supply value too. Let's assume the value of the | |
1041 | // id is going to be reasonably unique. | |
1042 | return (wxExpr *)hash_table->Get(key, value); | |
1043 | } | |
1044 | ||
1045 | wxExpr *wxExprDatabase::HashFind(const wxString& functor, const wxString& value) const | |
1046 | { | |
1047 | long key = hash_table->MakeKey(WXSTRINGCAST functor) + hash_table->MakeKey(WXSTRINGCAST value); | |
1048 | return (wxExpr *)hash_table->Get(key, WXSTRINGCAST value); | |
1049 | } | |
1050 | ||
1051 | void wxExprDatabase::ClearDatabase(void) | |
1052 | { | |
1053 | noErrors = 0; | |
1054 | wxNode *node = GetFirst(); | |
1055 | while (node) | |
1056 | { | |
1057 | wxExpr *expr = (wxExpr *)node->GetData(); | |
1058 | delete expr; | |
1059 | delete node; | |
1060 | node = GetFirst(); | |
1061 | } | |
1062 | ||
1063 | if (hash_table) | |
1064 | hash_table->Clear(); | |
1065 | } | |
1066 | ||
1067 | bool wxExprDatabase::Read(const wxString& filename) | |
1068 | { | |
1069 | noErrors = 0; | |
1070 | ||
1071 | FILE *f = wxFopen(filename, _T("r")); | |
1072 | if (f) | |
1073 | { | |
1074 | thewxExprDatabase = this; | |
1075 | ||
1076 | LexFromFile(f); | |
1077 | yyparse(); | |
1078 | fclose(f); | |
1079 | ||
1080 | wxExprCleanUp(); | |
1081 | return (noErrors == 0); | |
1082 | } | |
1083 | else | |
1084 | { | |
1085 | return false; | |
1086 | } | |
1087 | } | |
1088 | ||
1089 | bool wxExprDatabase::ReadFromString(const wxString& buffer) | |
1090 | { | |
1091 | noErrors = 0; | |
1092 | thewxExprDatabase = this; | |
1093 | ||
1094 | const wxWX2MBbuf buf = buffer.mb_str(); | |
1095 | LexFromString(wxMBSTRINGCAST buf); | |
1096 | yyparse(); | |
1097 | wxExprCleanUp(); | |
1098 | return (noErrors == 0); | |
1099 | } | |
1100 | ||
1101 | bool wxExprDatabase::Write(const wxString& fileName) | |
1102 | { | |
1103 | FILE *stream = wxFopen( fileName, _T("w+")); | |
1104 | ||
1105 | if (!stream) | |
1106 | return false; | |
1107 | ||
1108 | bool success = Write(stream); | |
1109 | fclose(stream); | |
1110 | return success; | |
1111 | } | |
1112 | ||
1113 | bool wxExprDatabase::Write(FILE *stream) | |
1114 | { | |
1115 | noErrors = 0; | |
1116 | wxNode *node = GetFirst(); | |
1117 | while (node) | |
1118 | { | |
1119 | wxExpr *expr = (wxExpr *)node->GetData(); | |
1120 | expr->WriteClause(stream); | |
1121 | node = node->GetNext(); | |
1122 | } | |
1123 | return (noErrors == 0); | |
1124 | } | |
1125 | ||
1126 | void add_expr(wxExpr * expr) | |
1127 | { | |
1128 | thewxExprDatabase->Append(expr); | |
1129 | } | |
1130 | ||
1131 | // Checks functor | |
1132 | bool wxExprIsFunctor(wxExpr *expr, const wxString& functor) | |
1133 | { | |
1134 | if (expr && (expr->Type() == wxExprList)) | |
1135 | { | |
1136 | wxExpr *first_expr = expr->value.first; | |
1137 | ||
1138 | if (first_expr && (first_expr->Type() == wxExprWord) && | |
1139 | (first_expr->WordValue() == functor)) | |
1140 | return true; | |
1141 | else | |
1142 | return false; | |
1143 | } | |
1144 | else | |
1145 | return false; | |
1146 | } | |
1147 | ||
1148 | /* | |
1149 | * Called from parser | |
1150 | * | |
1151 | */ | |
1152 | ||
1153 | char *wxmake_integer(char *str) | |
1154 | { | |
1155 | wxExpr *x = new wxExpr(atol(str)); | |
1156 | ||
1157 | return (char *)x; | |
1158 | } | |
1159 | ||
1160 | char *wxmake_real(char *str1, char *str2) | |
1161 | { | |
1162 | char buf[50]; | |
1163 | ||
1164 | sprintf(buf, "%s.%s", str1, str2); | |
1165 | double f = (double)atof(buf); | |
1166 | wxExpr *x = new wxExpr(f); | |
1167 | ||
1168 | return (char *)x; | |
1169 | } | |
1170 | ||
1171 | // extern "C" double exp10(double); | |
1172 | ||
1173 | char *wxmake_exp(char *str1, char *str2) | |
1174 | { | |
1175 | double mantissa = (double)atoi(str1); | |
1176 | double exponent = (double)atoi(str2); | |
1177 | ||
1178 | double d = mantissa * pow(10.0, exponent); | |
1179 | ||
1180 | wxExpr *x = new wxExpr(d); | |
1181 | ||
1182 | return (char *)x; | |
1183 | } | |
1184 | ||
1185 | char *wxmake_exp2(char *str1, char *str2, char *str3) | |
1186 | { | |
1187 | char buf[50]; | |
1188 | ||
1189 | sprintf(buf, "%s.%s", str1, str2); | |
1190 | double mantissa = (double)atof(buf); | |
1191 | double exponent = (double)atoi(str3); | |
1192 | ||
1193 | double d = mantissa * pow(10.0, exponent); | |
1194 | ||
1195 | wxExpr *x = new wxExpr(d); | |
1196 | ||
1197 | return (char *)x; | |
1198 | } | |
1199 | ||
1200 | char *wxmake_word(char *str) | |
1201 | { | |
1202 | wxExpr *x = new wxExpr(wxExprWord, wxString(str, wxConvLibc).c_str()); | |
1203 | return (char *)x; | |
1204 | } | |
1205 | ||
1206 | char *wxmake_string(char *str) | |
1207 | { | |
1208 | wxChar *s, *t; | |
1209 | size_t len, i; | |
1210 | const wxMB2WXbuf sbuf = wxConvLibc.cMB2WX(str); | |
1211 | ||
1212 | // str++; /* skip leading quote */ | |
1213 | len = wxStrlen(sbuf) - 1; /* ignore trailing quote */ | |
1214 | ||
1215 | s = new wxChar[len + 1]; | |
1216 | ||
1217 | t = s; | |
1218 | for(i=1; i<len; i++) // 1 since we want to skip leading quote | |
1219 | { | |
1220 | if (sbuf[i] == wxT('\\') && sbuf[i+1] == wxT('"')) | |
1221 | { | |
1222 | *t++ = wxT('"'); | |
1223 | i ++; | |
1224 | } | |
1225 | else if (sbuf[i] == wxT('\\') && sbuf[i+1] == wxT('\\')) | |
1226 | { | |
1227 | *t++ = wxT('\\'); | |
1228 | i ++; | |
1229 | } | |
1230 | else | |
1231 | *t++ = sbuf[i]; | |
1232 | } | |
1233 | ||
1234 | *t = wxT('\0'); | |
1235 | ||
1236 | wxExpr *x = new wxExpr(wxExprString, s, false); | |
1237 | return (char *)x; | |
1238 | } | |
1239 | ||
1240 | char *proio_cons(char * ccar, char * ccdr) | |
1241 | { | |
1242 | wxExpr *car = (wxExpr *)ccar; | |
1243 | wxExpr *cdr = (wxExpr *)ccdr; | |
1244 | ||
1245 | if (cdr == NULL) | |
1246 | { | |
1247 | cdr = new wxExpr(wxExprList); | |
1248 | } | |
1249 | if (car) | |
1250 | cdr->Insert(car); | |
1251 | return (char *)cdr; | |
1252 | } | |
1253 | ||
1254 | void process_command(char * cexpr) | |
1255 | { | |
1256 | wxExpr *expr = (wxExpr *)cexpr; | |
1257 | add_expr(expr); | |
1258 | } | |
1259 | ||
1260 | void syntax_error(char *WXUNUSED(s)) | |
1261 | { | |
1262 | if (currentwxExprErrorHandler) | |
1263 | (void)(*(currentwxExprErrorHandler))(WXEXPR_ERROR_SYNTAX, (char *)"syntax error"); | |
1264 | if (thewxExprDatabase) thewxExprDatabase->noErrors += 1; | |
1265 | } | |
1266 | ||
1267 | #if 0 | |
1268 | #ifdef _WINDLL | |
1269 | // char *__cdecl strdup(const char *s) | |
1270 | WXDLLEXPORT char *strdup(const char *s) | |
1271 | { | |
1272 | int len = strlen(s); | |
1273 | char *new_s = (char *)malloc(sizeof(char)*(len+1)); | |
1274 | strcpy(new_s, s); | |
1275 | return new_s; | |
1276 | } | |
1277 | #endif | |
1278 | #endif | |
1279 | ||
1280 | #endif | |
1281 | // wxUSE_PROLOGIO |