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
84 %token <string> T_ASSIGN_VAL
88 %left T_EQUAL T_UNEQUAL
89 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
92 %type <symbol> nonconst_symbol
94 %type <type> type logic_type default
98 %type <menu> if_entry menu_entry choice_entry
99 %type <string> word_opt assign_val
100 %type <flavor> assign_op
103 fprintf(stderr, "%s:%d: missing end statement for this entry\n",
104 $$->file->name, $$->lineno);
105 if (current_menu == $$)
107 } if_entry menu_entry choice_entry
110 input: mainmenu_stmt stmt_list | stmt_list;
114 mainmenu_stmt: T_MAINMENU T_WORD_QUOTE T_EOL
116 menu_add_prompt(P_MENU, $2, NULL);
121 | stmt_list assignment_stmt
122 | stmt_list choice_stmt
123 | stmt_list comment_stmt
124 | stmt_list config_stmt
126 | stmt_list menu_stmt
127 | stmt_list menuconfig_stmt
128 | stmt_list source_stmt
129 | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); }
130 | stmt_list error T_EOL { zconf_error("invalid statement"); }
135 | stmt_list_in_choice comment_stmt
136 | stmt_list_in_choice config_stmt
137 | stmt_list_in_choice if_stmt_in_choice
138 | stmt_list_in_choice error T_EOL { zconf_error("invalid statement"); }
141 /* config/menuconfig entry */
143 config_entry_start: T_CONFIG nonconst_symbol T_EOL
145 $2->flags |= SYMBOL_OPTIONAL;
147 printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2->name);
150 config_stmt: config_entry_start config_option_list
152 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
155 menuconfig_entry_start: T_MENUCONFIG nonconst_symbol T_EOL
157 $2->flags |= SYMBOL_OPTIONAL;
159 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2->name);
162 menuconfig_stmt: menuconfig_entry_start config_option_list
164 if (current_entry->prompt)
165 current_entry->prompt->type = P_MENU;
167 zconfprint("warning: menuconfig statement without prompt");
168 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
173 | config_option_list config_option
174 | config_option_list depends
175 | config_option_list help
178 config_option: type prompt_stmt_opt T_EOL
181 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
182 zconf_curname(), zconf_lineno(),
186 config_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
188 menu_add_prompt(P_PROMPT, $2, $3);
189 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
192 config_option: default expr if_expr T_EOL
194 menu_add_expr(P_DEFAULT, $2, $3);
197 printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
198 zconf_curname(), zconf_lineno(),
202 config_option: T_SELECT nonconst_symbol if_expr T_EOL
204 menu_add_symbol(P_SELECT, $2, $3);
205 printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
208 config_option: T_IMPLY nonconst_symbol if_expr T_EOL
210 menu_add_symbol(P_IMPLY, $2, $3);
211 printd(DEBUG_PARSE, "%s:%d:imply\n", zconf_curname(), zconf_lineno());
214 config_option: T_RANGE symbol symbol if_expr T_EOL
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());
220 config_option: T_OPTION T_MODULES T_EOL
222 menu_add_option_modules();
225 config_option: T_OPTION T_ALLNOCONFIG_Y T_EOL
227 menu_add_option_allnoconfig_y();
232 choice: T_CHOICE word_opt T_EOL
234 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
235 sym->flags |= SYMBOL_NO_WRITE;
237 menu_add_expr(P_CHOICE, NULL, NULL);
239 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
242 choice_entry: choice choice_option_list
244 $$ = menu_add_menu();
249 if (zconf_endtoken($1, "choice")) {
251 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
255 choice_stmt: choice_entry stmt_list_in_choice choice_end
260 | choice_option_list choice_option
261 | choice_option_list depends
262 | choice_option_list help
265 choice_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
267 menu_add_prompt(P_PROMPT, $2, $3);
268 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
271 choice_option: logic_type prompt_stmt_opt T_EOL
274 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
275 zconf_curname(), zconf_lineno(), $1);
278 choice_option: T_OPTIONAL T_EOL
280 current_entry->sym->flags |= SYMBOL_OPTIONAL;
281 printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
284 choice_option: T_DEFAULT nonconst_symbol if_expr T_EOL
286 menu_add_symbol(P_DEFAULT, $2, $3);
287 printd(DEBUG_PARSE, "%s:%d:default\n",
288 zconf_curname(), zconf_lineno());
293 | T_INT { $$ = S_INT; }
294 | T_HEX { $$ = S_HEX; }
295 | T_STRING { $$ = S_STRING; }
298 T_BOOL { $$ = S_BOOLEAN; }
299 | T_TRISTATE { $$ = S_TRISTATE; }
302 T_DEFAULT { $$ = S_UNKNOWN; }
303 | T_DEF_BOOL { $$ = S_BOOLEAN; }
304 | T_DEF_TRISTATE { $$ = S_TRISTATE; }
308 if_entry: T_IF expr T_EOL
310 printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
311 menu_add_entry(NULL);
313 $$ = menu_add_menu();
318 if (zconf_endtoken($1, "if")) {
320 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
324 if_stmt: if_entry stmt_list if_end
327 if_stmt_in_choice: if_entry stmt_list_in_choice if_end
332 menu: T_MENU T_WORD_QUOTE T_EOL
334 menu_add_entry(NULL);
335 menu_add_prompt(P_MENU, $2, NULL);
336 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
339 menu_entry: menu menu_option_list
341 $$ = menu_add_menu();
346 if (zconf_endtoken($1, "menu")) {
348 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
352 menu_stmt: menu_entry stmt_list menu_end
357 | menu_option_list visible
358 | menu_option_list depends
361 source_stmt: T_SOURCE T_WORD_QUOTE T_EOL
363 printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
370 comment: T_COMMENT T_WORD_QUOTE T_EOL
372 menu_add_entry(NULL);
373 menu_add_prompt(P_COMMENT, $2, NULL);
374 printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
377 comment_stmt: comment comment_option_list
382 | comment_option_list depends
387 help_start: T_HELP T_EOL
389 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
393 help: help_start T_HELPTEXT
395 if (current_entry->help) {
396 free(current_entry->help);
397 zconfprint("warning: '%s' defined with more than one help text -- only the last one will be used",
398 current_entry->sym->name ?: "<choice>");
401 /* Is the help text empty or all whitespace? */
402 if ($2[strspn($2, " \f\n\r\t\v")] == '\0')
403 zconfprint("warning: '%s' defined with blank help text",
404 current_entry->sym->name ?: "<choice>");
406 current_entry->help = $2;
411 depends: T_DEPENDS T_ON expr T_EOL
414 printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
417 /* visibility option */
418 visible: T_VISIBLE if_expr T_EOL
420 menu_add_visibility($2);
423 /* prompt statement */
427 | T_WORD_QUOTE if_expr
429 menu_add_prompt(P_PROMPT, $1, $2);
432 end: T_ENDMENU T_EOL { $$ = "menu"; }
433 | T_ENDCHOICE T_EOL { $$ = "choice"; }
434 | T_ENDIF T_EOL { $$ = "if"; }
437 if_expr: /* empty */ { $$ = NULL; }
438 | T_IF expr { $$ = $2; }
441 expr: symbol { $$ = expr_alloc_symbol($1); }
442 | symbol T_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); }
443 | symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
444 | symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); }
445 | symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
446 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
447 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
448 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
449 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
450 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
451 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
454 /* For symbol definitions, selects, etc., where quotes are not accepted */
455 nonconst_symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); };
457 symbol: nonconst_symbol
458 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
461 word_opt: /* empty */ { $$ = NULL; }
464 /* assignment statement */
466 assignment_stmt: T_WORD assign_op assign_val T_EOL { variable_add($1, $3, $2); free($1); free($3); }
469 T_EQUAL { $$ = VAR_RECURSIVE; }
470 | T_COLON_EQUAL { $$ = VAR_SIMPLE; }
471 | T_PLUS_EQUAL { $$ = VAR_APPEND; }
475 /* empty */ { $$ = xstrdup(""); };
481 void conf_parse(const char *name)
486 zconf_initscan(name);
490 if (getenv("ZCONF_DEBUG"))
494 /* Variables are expanded in the parse phase. We can free them here. */
500 modules_sym = sym_find( "n" );
502 if (!menu_has_prompt(&rootmenu)) {
503 current_entry = &rootmenu;
504 menu_add_prompt(P_MENU, "Main menu", NULL);
507 menu_finalize(&rootmenu);
508 for_all_symbols(i, sym) {
509 if (sym_check_deps(sym))
514 sym_set_change_count(1);
517 static bool zconf_endtoken(const char *tokenname,
518 const char *expected_tokenname)
520 if (strcmp(tokenname, expected_tokenname)) {
521 zconf_error("unexpected '%s' within %s block",
522 tokenname, expected_tokenname);
526 if (current_menu->file != current_file) {
527 zconf_error("'%s' in different file than '%s'",
528 tokenname, expected_tokenname);
529 fprintf(stderr, "%s:%d: location of the '%s'\n",
530 current_menu->file->name, current_menu->lineno,
538 static void zconfprint(const char *err, ...)
542 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
544 vfprintf(stderr, err, ap);
546 fprintf(stderr, "\n");
549 static void zconf_error(const char *err, ...)
554 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
556 vfprintf(stderr, err, ap);
558 fprintf(stderr, "\n");
561 static void yyerror(const char *err)
563 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
566 static void print_quoted_string(FILE *out, const char *str)
572 while ((p = strchr(str, '"'))) {
575 fprintf(out, "%.*s", len, str);
583 static void print_symbol(FILE *out, struct menu *menu)
585 struct symbol *sym = menu->sym;
586 struct property *prop;
588 if (sym_is_choice(sym))
589 fprintf(out, "\nchoice\n");
591 fprintf(out, "\nconfig %s\n", sym->name);
594 fputs(" bool\n", out);
597 fputs(" tristate\n", out);
600 fputs(" string\n", out);
603 fputs(" integer\n", out);
606 fputs(" hex\n", out);
609 fputs(" ???\n", out);
612 for (prop = sym->prop; prop; prop = prop->next) {
613 if (prop->menu != menu)
615 switch (prop->type) {
617 fputs(" prompt ", out);
618 print_quoted_string(out, prop->text);
619 if (!expr_is_yes(prop->visible.expr)) {
621 expr_fprint(prop->visible.expr, out);
626 fputs( " default ", out);
627 expr_fprint(prop->expr, out);
628 if (!expr_is_yes(prop->visible.expr)) {
630 expr_fprint(prop->visible.expr, out);
635 fputs(" #choice value\n", out);
638 fputs( " select ", out);
639 expr_fprint(prop->expr, out);
643 fputs( " imply ", out);
644 expr_fprint(prop->expr, out);
648 fputs( " range ", out);
649 expr_fprint(prop->expr, out);
653 fputs( " menu ", out);
654 print_quoted_string(out, prop->text);
658 fputs( " symbol ", out);
659 fprintf(out, "%s\n", prop->menu->sym->name);
662 fprintf(out, " unknown prop %d!\n", prop->type);
667 int len = strlen(menu->help);
668 while (menu->help[--len] == '\n')
670 fprintf(out, " help\n%s\n", menu->help);
674 void zconfdump(FILE *out)
676 struct property *prop;
680 menu = rootmenu.list;
682 if ((sym = menu->sym))
683 print_symbol(out, menu);
684 else if ((prop = menu->prompt)) {
685 switch (prop->type) {
687 fputs("\ncomment ", out);
688 print_quoted_string(out, prop->text);
692 fputs("\nmenu ", out);
693 print_quoted_string(out, prop->text);
699 if (!expr_is_yes(prop->visible.expr)) {
700 fputs(" depends ", out);
701 expr_fprint(prop->visible.expr, out);
710 else while ((menu = menu->parent)) {
711 if (menu->prompt && menu->prompt->type == P_MENU)
712 fputs("\nendmenu\n", out);