1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
16 #define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
19 #define DEBUG_PARSE 0x0002
23 static void yyerror(const char *err);
24 static void zconfprint(const char *err, ...);
25 static void zconf_error(const char *err, ...);
26 static bool zconf_endtoken(const char *tokenname,
27 const char *expected_tokenname);
29 struct symbol *symbol_hash[SYMBOL_HASHSIZE];
31 static struct menu *current_menu, *current_entry;
38 struct symbol *symbol;
41 enum symbol_type type;
42 enum variable_flavor flavor;
45 %token <string> T_HELPTEXT
46 %token <string> T_WORD
47 %token <string> T_WORD_QUOTE
48 %token T_ALLNOCONFIG_Y
56 %token T_DEFCONFIG_LIST
85 %token <string> T_ASSIGN_VAL
89 %left T_EQUAL T_UNEQUAL
90 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
93 %type <symbol> nonconst_symbol
95 %type <type> type logic_type default
99 %type <menu> if_entry menu_entry choice_entry
100 %type <string> word_opt assign_val
101 %type <flavor> assign_op
104 fprintf(stderr, "%s:%d: missing end statement for this entry\n",
105 $$->file->name, $$->lineno);
106 if (current_menu == $$)
108 } if_entry menu_entry choice_entry
111 input: mainmenu_stmt stmt_list | stmt_list;
115 mainmenu_stmt: T_MAINMENU T_WORD_QUOTE T_EOL
117 menu_add_prompt(P_MENU, $2, NULL);
122 | stmt_list common_stmt
123 | stmt_list choice_stmt
124 | stmt_list menu_stmt
125 | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); }
126 | stmt_list error T_EOL { zconf_error("invalid statement"); }
138 /* config/menuconfig entry */
140 config_entry_start: T_CONFIG nonconst_symbol T_EOL
142 $2->flags |= SYMBOL_OPTIONAL;
144 printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2->name);
147 config_stmt: config_entry_start config_option_list
149 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
152 menuconfig_entry_start: T_MENUCONFIG nonconst_symbol T_EOL
154 $2->flags |= SYMBOL_OPTIONAL;
156 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2->name);
159 menuconfig_stmt: menuconfig_entry_start config_option_list
161 if (current_entry->prompt)
162 current_entry->prompt->type = P_MENU;
164 zconfprint("warning: menuconfig statement without prompt");
165 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
170 | config_option_list config_option
171 | config_option_list depends
172 | config_option_list help
175 config_option: type prompt_stmt_opt T_EOL
178 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
179 zconf_curname(), zconf_lineno(),
183 config_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
185 menu_add_prompt(P_PROMPT, $2, $3);
186 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
189 config_option: default expr if_expr T_EOL
191 menu_add_expr(P_DEFAULT, $2, $3);
194 printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
195 zconf_curname(), zconf_lineno(),
199 config_option: T_SELECT nonconst_symbol if_expr T_EOL
201 menu_add_symbol(P_SELECT, $2, $3);
202 printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
205 config_option: T_IMPLY nonconst_symbol if_expr T_EOL
207 menu_add_symbol(P_IMPLY, $2, $3);
208 printd(DEBUG_PARSE, "%s:%d:imply\n", zconf_curname(), zconf_lineno());
211 config_option: T_RANGE symbol symbol if_expr T_EOL
213 menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
214 printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
217 config_option: T_OPTION T_MODULES T_EOL
219 menu_add_option_modules();
222 config_option: T_OPTION T_DEFCONFIG_LIST T_EOL
224 menu_add_option_defconfig_list();
227 config_option: T_OPTION T_ALLNOCONFIG_Y T_EOL
229 menu_add_option_allnoconfig_y();
234 choice: T_CHOICE word_opt T_EOL
236 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
237 sym->flags |= SYMBOL_NO_WRITE;
239 menu_add_expr(P_CHOICE, NULL, NULL);
241 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
244 choice_entry: choice choice_option_list
246 $$ = menu_add_menu();
251 if (zconf_endtoken($1, "choice")) {
253 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
257 choice_stmt: choice_entry choice_block choice_end
262 | choice_option_list choice_option
263 | choice_option_list depends
264 | choice_option_list help
267 choice_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
269 menu_add_prompt(P_PROMPT, $2, $3);
270 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
273 choice_option: logic_type prompt_stmt_opt T_EOL
276 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
277 zconf_curname(), zconf_lineno(), $1);
280 choice_option: T_OPTIONAL T_EOL
282 current_entry->sym->flags |= SYMBOL_OPTIONAL;
283 printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
286 choice_option: T_DEFAULT nonconst_symbol if_expr T_EOL
288 menu_add_symbol(P_DEFAULT, $2, $3);
289 printd(DEBUG_PARSE, "%s:%d:default\n",
290 zconf_curname(), zconf_lineno());
295 | T_INT { $$ = S_INT; }
296 | T_HEX { $$ = S_HEX; }
297 | T_STRING { $$ = S_STRING; }
300 T_BOOL { $$ = S_BOOLEAN; }
301 | T_TRISTATE { $$ = S_TRISTATE; }
304 T_DEFAULT { $$ = S_UNKNOWN; }
305 | T_DEF_BOOL { $$ = S_BOOLEAN; }
306 | T_DEF_TRISTATE { $$ = S_TRISTATE; }
310 | choice_block common_stmt
315 if_entry: T_IF expr T_EOL
317 printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
318 menu_add_entry(NULL);
320 $$ = menu_add_menu();
325 if (zconf_endtoken($1, "if")) {
327 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
331 if_stmt: if_entry stmt_list if_end
336 menu: T_MENU T_WORD_QUOTE T_EOL
338 menu_add_entry(NULL);
339 menu_add_prompt(P_MENU, $2, NULL);
340 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
343 menu_entry: menu menu_option_list
345 $$ = menu_add_menu();
350 if (zconf_endtoken($1, "menu")) {
352 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
356 menu_stmt: menu_entry stmt_list menu_end
361 | menu_option_list visible
362 | menu_option_list depends
365 source_stmt: T_SOURCE T_WORD_QUOTE T_EOL
367 printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
374 comment: T_COMMENT T_WORD_QUOTE T_EOL
376 menu_add_entry(NULL);
377 menu_add_prompt(P_COMMENT, $2, NULL);
378 printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
381 comment_stmt: comment comment_option_list
386 | comment_option_list depends
391 help_start: T_HELP T_EOL
393 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
397 help: help_start T_HELPTEXT
399 if (current_entry->help) {
400 free(current_entry->help);
401 zconfprint("warning: '%s' defined with more than one help text -- only the last one will be used",
402 current_entry->sym->name ?: "<choice>");
405 /* Is the help text empty or all whitespace? */
406 if ($2[strspn($2, " \f\n\r\t\v")] == '\0')
407 zconfprint("warning: '%s' defined with blank help text",
408 current_entry->sym->name ?: "<choice>");
410 current_entry->help = $2;
415 depends: T_DEPENDS T_ON expr T_EOL
418 printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
421 /* visibility option */
422 visible: T_VISIBLE if_expr T_EOL
424 menu_add_visibility($2);
427 /* prompt statement */
431 | T_WORD_QUOTE if_expr
433 menu_add_prompt(P_PROMPT, $1, $2);
436 end: T_ENDMENU T_EOL { $$ = "menu"; }
437 | T_ENDCHOICE T_EOL { $$ = "choice"; }
438 | T_ENDIF T_EOL { $$ = "if"; }
441 if_expr: /* empty */ { $$ = NULL; }
442 | T_IF expr { $$ = $2; }
445 expr: symbol { $$ = expr_alloc_symbol($1); }
446 | symbol T_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); }
447 | symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
448 | symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); }
449 | symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
450 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
451 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
452 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
453 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
454 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
455 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
458 /* For symbol definitions, selects, etc., where quotes are not accepted */
459 nonconst_symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); };
461 symbol: nonconst_symbol
462 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
465 word_opt: /* empty */ { $$ = NULL; }
468 /* assignment statement */
470 assignment_stmt: T_WORD assign_op assign_val T_EOL { variable_add($1, $3, $2); free($1); free($3); }
473 T_EQUAL { $$ = VAR_RECURSIVE; }
474 | T_COLON_EQUAL { $$ = VAR_SIMPLE; }
475 | T_PLUS_EQUAL { $$ = VAR_APPEND; }
479 /* empty */ { $$ = xstrdup(""); };
485 void conf_parse(const char *name)
490 zconf_initscan(name);
494 if (getenv("ZCONF_DEBUG"))
498 /* Variables are expanded in the parse phase. We can free them here. */
504 modules_sym = sym_find( "n" );
506 if (!menu_has_prompt(&rootmenu)) {
507 current_entry = &rootmenu;
508 menu_add_prompt(P_MENU, "Main menu", NULL);
511 menu_finalize(&rootmenu);
512 for_all_symbols(i, sym) {
513 if (sym_check_deps(sym))
518 sym_set_change_count(1);
521 static bool zconf_endtoken(const char *tokenname,
522 const char *expected_tokenname)
524 if (strcmp(tokenname, expected_tokenname)) {
525 zconf_error("unexpected '%s' within %s block",
526 tokenname, expected_tokenname);
530 if (current_menu->file != current_file) {
531 zconf_error("'%s' in different file than '%s'",
532 tokenname, expected_tokenname);
533 fprintf(stderr, "%s:%d: location of the '%s'\n",
534 current_menu->file->name, current_menu->lineno,
542 static void zconfprint(const char *err, ...)
546 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
548 vfprintf(stderr, err, ap);
550 fprintf(stderr, "\n");
553 static void zconf_error(const char *err, ...)
558 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
560 vfprintf(stderr, err, ap);
562 fprintf(stderr, "\n");
565 static void yyerror(const char *err)
567 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
570 static void print_quoted_string(FILE *out, const char *str)
576 while ((p = strchr(str, '"'))) {
579 fprintf(out, "%.*s", len, str);
587 static void print_symbol(FILE *out, struct menu *menu)
589 struct symbol *sym = menu->sym;
590 struct property *prop;
592 if (sym_is_choice(sym))
593 fprintf(out, "\nchoice\n");
595 fprintf(out, "\nconfig %s\n", sym->name);
598 fputs(" bool\n", out);
601 fputs(" tristate\n", out);
604 fputs(" string\n", out);
607 fputs(" integer\n", out);
610 fputs(" hex\n", out);
613 fputs(" ???\n", out);
616 for (prop = sym->prop; prop; prop = prop->next) {
617 if (prop->menu != menu)
619 switch (prop->type) {
621 fputs(" prompt ", out);
622 print_quoted_string(out, prop->text);
623 if (!expr_is_yes(prop->visible.expr)) {
625 expr_fprint(prop->visible.expr, out);
630 fputs( " default ", out);
631 expr_fprint(prop->expr, out);
632 if (!expr_is_yes(prop->visible.expr)) {
634 expr_fprint(prop->visible.expr, out);
639 fputs(" #choice value\n", out);
642 fputs( " select ", out);
643 expr_fprint(prop->expr, out);
647 fputs( " imply ", out);
648 expr_fprint(prop->expr, out);
652 fputs( " range ", out);
653 expr_fprint(prop->expr, out);
657 fputs( " menu ", out);
658 print_quoted_string(out, prop->text);
662 fputs( " symbol ", out);
663 fprintf(out, "%s\n", prop->menu->sym->name);
666 fprintf(out, " unknown prop %d!\n", prop->type);
671 int len = strlen(menu->help);
672 while (menu->help[--len] == '\n')
674 fprintf(out, " help\n%s\n", menu->help);
678 void zconfdump(FILE *out)
680 struct property *prop;
684 menu = rootmenu.list;
686 if ((sym = menu->sym))
687 print_symbol(out, menu);
688 else if ((prop = menu->prompt)) {
689 switch (prop->type) {
691 fputs("\ncomment ", out);
692 print_quoted_string(out, prop->text);
696 fputs("\nmenu ", out);
697 print_quoted_string(out, prop->text);
703 if (!expr_is_yes(prop->visible.expr)) {
704 fputs(" depends ", out);
705 expr_fprint(prop->visible.expr, out);
714 else while ((menu = menu->parent)) {
715 if (menu->prompt && menu->prompt->type == P_MENU)
716 fputs("\nendmenu\n", out);