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1%{
2/*
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
4 * Released under the terms of the GNU GPL v2.0.
5 */
6
7#include <ctype.h>
8#include <stdarg.h>
9#include <stdio.h>
10#include <stdlib.h>
11#include <string.h>
12#include <stdbool.h>
13
14#include "lkc.h"
15
16#define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
17
18#define PRINTD 0x0001
19#define DEBUG_PARSE 0x0002
20
21int cdebug = PRINTD;
22
23extern int zconflex(void);
24static void zconfprint(const char *err, ...);
25static void zconf_error(const char *err, ...);
26static void zconferror(const char *err);
27static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken);
28
29struct symbol *symbol_hash[SYMBOL_HASHSIZE];
30
31static struct menu *current_menu, *current_entry;
32
33%}
34%expect 30
35
36%union
37{
38 char *string;
39 struct file *file;
40 struct symbol *symbol;
41 struct expr *expr;
42 struct menu *menu;
43 const struct kconf_id *id;
44}
45
46%token <id>T_MAINMENU
47%token <id>T_MENU
48%token <id>T_ENDMENU
49%token <id>T_SOURCE
50%token <id>T_CHOICE
51%token <id>T_ENDCHOICE
52%token <id>T_COMMENT
53%token <id>T_CONFIG
54%token <id>T_MENUCONFIG
55%token <id>T_HELP
56%token <string> T_HELPTEXT
57%token <id>T_IF
58%token <id>T_ENDIF
59%token <id>T_DEPENDS
60%token <id>T_OPTIONAL
61%token <id>T_PROMPT
62%token <id>T_TYPE
63%token <id>T_DEFAULT
64%token <id>T_SELECT
65%token <id>T_RANGE
66%token <id>T_VISIBLE
67%token <id>T_OPTION
68%token <id>T_ON
69%token <string> T_WORD
70%token <string> T_WORD_QUOTE
71%token T_UNEQUAL
72%token T_CLOSE_PAREN
73%token T_OPEN_PAREN
74%token T_EOL
75
76%left T_OR
77%left T_AND
78%left T_EQUAL T_UNEQUAL
79%nonassoc T_NOT
80
81%type <string> prompt
82%type <symbol> symbol
83%type <expr> expr
84%type <expr> if_expr
85%type <id> end
86%type <id> option_name
87%type <menu> if_entry menu_entry choice_entry
88%type <string> symbol_option_arg word_opt
89
90%destructor {
91 fprintf(stderr, "%s:%d: missing end statement for this entry\n",
92 $$->file->name, $$->lineno);
93 if (current_menu == $$)
94 menu_end_menu();
95} if_entry menu_entry choice_entry
96
97%{
98/* Include zconf.hash.c here so it can see the token constants. */
99#include "zconf.hash.c"
100%}
101
102%%
103input: nl start | start;
104
105start: mainmenu_stmt stmt_list | stmt_list;
106
107stmt_list:
108 /* empty */
109 | stmt_list common_stmt
110 | stmt_list choice_stmt
111 | stmt_list menu_stmt
112 | stmt_list end { zconf_error("unexpected end statement"); }
113 | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); }
114 | stmt_list option_name error T_EOL
115{
116 zconf_error("unexpected option \"%s\"", kconf_id_strings + $2->name);
117}
118 | stmt_list error T_EOL { zconf_error("invalid statement"); }
119;
120
121option_name:
122 T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_OPTIONAL | T_RANGE | T_DEFAULT | T_VISIBLE
123;
124
125common_stmt:
126 T_EOL
127 | if_stmt
128 | comment_stmt
129 | config_stmt
130 | menuconfig_stmt
131 | source_stmt
132;
133
134option_error:
135 T_WORD error T_EOL { zconf_error("unknown option \"%s\"", $1); }
136 | error T_EOL { zconf_error("invalid option"); }
137;
138
139
140/* config/menuconfig entry */
141
142config_entry_start: T_CONFIG T_WORD T_EOL
143{
144 struct symbol *sym = sym_lookup($2, 0);
145 sym->flags |= SYMBOL_OPTIONAL;
146 menu_add_entry(sym);
147 printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2);
148};
149
150config_stmt: config_entry_start config_option_list
151{
152 menu_end_entry();
153 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
154};
155
156menuconfig_entry_start: T_MENUCONFIG T_WORD T_EOL
157{
158 struct symbol *sym = sym_lookup($2, 0);
159 sym->flags |= SYMBOL_OPTIONAL;
160 menu_add_entry(sym);
161 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2);
162};
163
164menuconfig_stmt: menuconfig_entry_start config_option_list
165{
166 if (current_entry->prompt)
167 current_entry->prompt->type = P_MENU;
168 else
169 zconfprint("warning: menuconfig statement without prompt");
170 menu_end_entry();
171 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
172};
173
174config_option_list:
175 /* empty */
176 | config_option_list config_option
177 | config_option_list symbol_option
178 | config_option_list depends
179 | config_option_list help
180 | config_option_list option_error
181 | config_option_list T_EOL
182;
183
184config_option: T_TYPE prompt_stmt_opt T_EOL
185{
186 menu_set_type($1->stype);
187 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
188 zconf_curname(), zconf_lineno(),
189 $1->stype);
190};
191
192config_option: T_PROMPT prompt if_expr T_EOL
193{
194 menu_add_prompt(P_PROMPT, $2, $3);
195 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
196};
197
198config_option: T_DEFAULT expr if_expr T_EOL
199{
200 menu_add_expr(P_DEFAULT, $2, $3);
201 if ($1->stype != S_UNKNOWN)
202 menu_set_type($1->stype);
203 printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
204 zconf_curname(), zconf_lineno(),
205 $1->stype);
206};
207
208config_option: T_SELECT T_WORD if_expr T_EOL
209{
210 menu_add_symbol(P_SELECT, sym_lookup($2, 0), $3);
211 printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
212};
213
214config_option: T_RANGE symbol symbol if_expr T_EOL
215{
216 menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
217 printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
218};
219
220symbol_option: T_OPTION symbol_option_list T_EOL
221;
222
223symbol_option_list:
224 /* empty */
225 | symbol_option_list T_WORD symbol_option_arg
226{
227 const struct kconf_id *id = kconf_id_lookup($2, strlen($2));
228 if (id && id->flags & TF_OPTION)
229 menu_add_option(id->token, $3);
230 else
231 zconfprint("warning: ignoring unknown option %s", $2);
232 free($2);
233};
234
235symbol_option_arg:
236 /* empty */ { $$ = NULL; }
237 | T_EQUAL prompt { $$ = $2; }
238;
239
240/* choice entry */
241
242choice: T_CHOICE word_opt T_EOL
243{
244 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
245 sym->flags |= SYMBOL_AUTO;
246 menu_add_entry(sym);
247 menu_add_expr(P_CHOICE, NULL, NULL);
248 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
249};
250
251choice_entry: choice choice_option_list
252{
253 $$ = menu_add_menu();
254};
255
256choice_end: end
257{
258 if (zconf_endtoken($1, T_CHOICE, T_ENDCHOICE)) {
259 menu_end_menu();
260 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
261 }
262};
263
264choice_stmt: choice_entry choice_block choice_end
265;
266
267choice_option_list:
268 /* empty */
269 | choice_option_list choice_option
270 | choice_option_list depends
271 | choice_option_list help
272 | choice_option_list T_EOL
273 | choice_option_list option_error
274;
275
276choice_option: T_PROMPT prompt if_expr T_EOL
277{
278 menu_add_prompt(P_PROMPT, $2, $3);
279 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
280};
281
282choice_option: T_TYPE prompt_stmt_opt T_EOL
283{
284 if ($1->stype == S_BOOLEAN || $1->stype == S_TRISTATE) {
285 menu_set_type($1->stype);
286 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
287 zconf_curname(), zconf_lineno(),
288 $1->stype);
289 } else
290 YYERROR;
291};
292
293choice_option: T_OPTIONAL T_EOL
294{
295 current_entry->sym->flags |= SYMBOL_OPTIONAL;
296 printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
297};
298
299choice_option: T_DEFAULT T_WORD if_expr T_EOL
300{
301 if ($1->stype == S_UNKNOWN) {
302 menu_add_symbol(P_DEFAULT, sym_lookup($2, 0), $3);
303 printd(DEBUG_PARSE, "%s:%d:default\n",
304 zconf_curname(), zconf_lineno());
305 } else
306 YYERROR;
307};
308
309choice_block:
310 /* empty */
311 | choice_block common_stmt
312;
313
314/* if entry */
315
316if_entry: T_IF expr nl
317{
318 printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
319 menu_add_entry(NULL);
320 menu_add_dep($2);
321 $$ = menu_add_menu();
322};
323
324if_end: end
325{
326 if (zconf_endtoken($1, T_IF, T_ENDIF)) {
327 menu_end_menu();
328 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
329 }
330};
331
332if_stmt: if_entry if_block if_end
333;
334
335if_block:
336 /* empty */
337 | if_block common_stmt
338 | if_block menu_stmt
339 | if_block choice_stmt
340;
341
342/* mainmenu entry */
343
344mainmenu_stmt: T_MAINMENU prompt nl
345{
346 menu_add_prompt(P_MENU, $2, NULL);
347};
348
349/* menu entry */
350
351menu: T_MENU prompt T_EOL
352{
353 menu_add_entry(NULL);
354 menu_add_prompt(P_MENU, $2, NULL);
355 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
356};
357
358menu_entry: menu visibility_list depends_list
359{
360 $$ = menu_add_menu();
361};
362
363menu_end: end
364{
365 if (zconf_endtoken($1, T_MENU, T_ENDMENU)) {
366 menu_end_menu();
367 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
368 }
369};
370
371menu_stmt: menu_entry menu_block menu_end
372;
373
374menu_block:
375 /* empty */
376 | menu_block common_stmt
377 | menu_block menu_stmt
378 | menu_block choice_stmt
379;
380
381source_stmt: T_SOURCE prompt T_EOL
382{
383 printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
384 zconf_nextfile($2);
385};
386
387/* comment entry */
388
389comment: T_COMMENT prompt T_EOL
390{
391 menu_add_entry(NULL);
392 menu_add_prompt(P_COMMENT, $2, NULL);
393 printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
394};
395
396comment_stmt: comment depends_list
397{
398 menu_end_entry();
399};
400
401/* help option */
402
403help_start: T_HELP T_EOL
404{
405 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
406 zconf_starthelp();
407};
408
409help: help_start T_HELPTEXT
410{
411 current_entry->help = $2;
412};
413
414/* depends option */
415
416depends_list:
417 /* empty */
418 | depends_list depends
419 | depends_list T_EOL
420 | depends_list option_error
421;
422
423depends: T_DEPENDS T_ON expr T_EOL
424{
425 menu_add_dep($3);
426 printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
427};
428
429/* visibility option */
430
431visibility_list:
432 /* empty */
433 | visibility_list visible
434 | visibility_list T_EOL
435;
436
437visible: T_VISIBLE if_expr
438{
439 menu_add_visibility($2);
440};
441
442/* prompt statement */
443
444prompt_stmt_opt:
445 /* empty */
446 | prompt if_expr
447{
448 menu_add_prompt(P_PROMPT, $1, $2);
449};
450
451prompt: T_WORD
452 | T_WORD_QUOTE
453;
454
455end: T_ENDMENU T_EOL { $$ = $1; }
456 | T_ENDCHOICE T_EOL { $$ = $1; }
457 | T_ENDIF T_EOL { $$ = $1; }
458;
459
460nl:
461 T_EOL
462 | nl T_EOL
463;
464
465if_expr: /* empty */ { $$ = NULL; }
466 | T_IF expr { $$ = $2; }
467;
468
469expr: symbol { $$ = expr_alloc_symbol($1); }
470 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
471 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
472 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
473 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
474 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
475 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
476;
477
478symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); }
479 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
480;
481
482word_opt: /* empty */ { $$ = NULL; }
483 | T_WORD
484
485%%
486
487void conf_parse(const char *name)
488{
489 struct symbol *sym;
490 int i;
491
492 zconf_initscan(name);
493
494 sym_init();
495 _menu_init();
496 rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL);
497
498 if (getenv("ZCONF_DEBUG"))
499 zconfdebug = 1;
500 zconfparse();
501 if (zconfnerrs)
502 exit(1);
503 if (!modules_sym)
504 modules_sym = sym_find( "n" );
505
506 rootmenu.prompt->text = _(rootmenu.prompt->text);
507 rootmenu.prompt->text = sym_expand_string_value(rootmenu.prompt->text);
508
509 menu_finalize(&rootmenu);
510 for_all_symbols(i, sym) {
511 if (sym_check_deps(sym))
512 zconfnerrs++;
513 }
514 if (zconfnerrs)
515 exit(1);
516 sym_set_change_count(1);
517}
518
519static const char *zconf_tokenname(int token)
520{
521 switch (token) {
522 case T_MENU: return "menu";
523 case T_ENDMENU: return "endmenu";
524 case T_CHOICE: return "choice";
525 case T_ENDCHOICE: return "endchoice";
526 case T_IF: return "if";
527 case T_ENDIF: return "endif";
528 case T_DEPENDS: return "depends";
529 case T_VISIBLE: return "visible";
530 }
531 return "<token>";
532}
533
534static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken)
535{
536 if (id->token != endtoken) {
537 zconf_error("unexpected '%s' within %s block",
538 kconf_id_strings + id->name, zconf_tokenname(starttoken));
539 zconfnerrs++;
540 return false;
541 }
542 if (current_menu->file != current_file) {
543 zconf_error("'%s' in different file than '%s'",
544 kconf_id_strings + id->name, zconf_tokenname(starttoken));
545 fprintf(stderr, "%s:%d: location of the '%s'\n",
546 current_menu->file->name, current_menu->lineno,
547 zconf_tokenname(starttoken));
548 zconfnerrs++;
549 return false;
550 }
551 return true;
552}
553
554static void zconfprint(const char *err, ...)
555{
556 va_list ap;
557
558 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
559 va_start(ap, err);
560 vfprintf(stderr, err, ap);
561 va_end(ap);
562 fprintf(stderr, "\n");
563}
564
565static void zconf_error(const char *err, ...)
566{
567 va_list ap;
568
569 zconfnerrs++;
570 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
571 va_start(ap, err);
572 vfprintf(stderr, err, ap);
573 va_end(ap);
574 fprintf(stderr, "\n");
575}
576
577static void zconferror(const char *err)
578{
579 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
580}
581
582static void print_quoted_string(FILE *out, const char *str)
583{
584 const char *p;
585 int len;
586
587 putc('"', out);
588 while ((p = strchr(str, '"'))) {
589 len = p - str;
590 if (len)
591 fprintf(out, "%.*s", len, str);
592 fputs("\\\"", out);
593 str = p + 1;
594 }
595 fputs(str, out);
596 putc('"', out);
597}
598
599static void print_symbol(FILE *out, struct menu *menu)
600{
601 struct symbol *sym = menu->sym;
602 struct property *prop;
603
604 if (sym_is_choice(sym))
605 fprintf(out, "\nchoice\n");
606 else
607 fprintf(out, "\nconfig %s\n", sym->name);
608 switch (sym->type) {
609 case S_BOOLEAN:
610 fputs(" boolean\n", out);
611 break;
612 case S_TRISTATE:
613 fputs(" tristate\n", out);
614 break;
615 case S_STRING:
616 fputs(" string\n", out);
617 break;
618 case S_INT:
619 fputs(" integer\n", out);
620 break;
621 case S_HEX:
622 fputs(" hex\n", out);
623 break;
624 default:
625 fputs(" ???\n", out);
626 break;
627 }
628 for (prop = sym->prop; prop; prop = prop->next) {
629 if (prop->menu != menu)
630 continue;
631 switch (prop->type) {
632 case P_PROMPT:
633 fputs(" prompt ", out);
634 print_quoted_string(out, prop->text);
635 if (!expr_is_yes(prop->visible.expr)) {
636 fputs(" if ", out);
637 expr_fprint(prop->visible.expr, out);
638 }
639 fputc('\n', out);
640 break;
641 case P_DEFAULT:
642 fputs( " default ", out);
643 expr_fprint(prop->expr, out);
644 if (!expr_is_yes(prop->visible.expr)) {
645 fputs(" if ", out);
646 expr_fprint(prop->visible.expr, out);
647 }
648 fputc('\n', out);
649 break;
650 case P_CHOICE:
651 fputs(" #choice value\n", out);
652 break;
653 case P_SELECT:
654 fputs( " select ", out);
655 expr_fprint(prop->expr, out);
656 fputc('\n', out);
657 break;
658 case P_RANGE:
659 fputs( " range ", out);
660 expr_fprint(prop->expr, out);
661 fputc('\n', out);
662 break;
663 case P_MENU:
664 fputs( " menu ", out);
665 print_quoted_string(out, prop->text);
666 fputc('\n', out);
667 break;
668 default:
669 fprintf(out, " unknown prop %d!\n", prop->type);
670 break;
671 }
672 }
673 if (menu->help) {
674 int len = strlen(menu->help);
675 while (menu->help[--len] == '\n')
676 menu->help[len] = 0;
677 fprintf(out, " help\n%s\n", menu->help);
678 }
679}
680
681void zconfdump(FILE *out)
682{
683 struct property *prop;
684 struct symbol *sym;
685 struct menu *menu;
686
687 menu = rootmenu.list;
688 while (menu) {
689 if ((sym = menu->sym))
690 print_symbol(out, menu);
691 else if ((prop = menu->prompt)) {
692 switch (prop->type) {
693 case P_COMMENT:
694 fputs("\ncomment ", out);
695 print_quoted_string(out, prop->text);
696 fputs("\n", out);
697 break;
698 case P_MENU:
699 fputs("\nmenu ", out);
700 print_quoted_string(out, prop->text);
701 fputs("\n", out);
702 break;
703 default:
704 ;
705 }
706 if (!expr_is_yes(prop->visible.expr)) {
707 fputs(" depends ", out);
708 expr_fprint(prop->visible.expr, out);
709 fputc('\n', out);
710 }
711 }
712
713 if (menu->list)
714 menu = menu->list;
715 else if (menu->next)
716 menu = menu->next;
717 else while ((menu = menu->parent)) {
718 if (menu->prompt && menu->prompt->type == P_MENU)
719 fputs("\nendmenu\n", out);
720 if (menu->next) {
721 menu = menu->next;
722 break;
723 }
724 }
725 }
726}
727
728#include "zconf.lex.c"
729#include "util.c"
730#include "confdata.c"
731#include "expr.c"
732#include "symbol.c"
733#include "menu.c"