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;
39 struct symbol *symbol;
42 enum symbol_type type;
43 enum variable_flavor flavor;
46 %token <string> T_HELPTEXT
47 %token <string> T_WORD
48 %token <string> T_WORD_QUOTE
49 %token T_ALLNOCONFIG_Y
57 %token T_DEFCONFIG_LIST
86 %token <string> T_ASSIGN_VAL
90 %left T_EQUAL T_UNEQUAL
91 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
95 %type <symbol> nonconst_symbol
97 %type <type> type logic_type default
101 %type <menu> if_entry menu_entry choice_entry
102 %type <string> word_opt assign_val
103 %type <flavor> assign_op
106 fprintf(stderr, "%s:%d: missing end statement for this entry\n",
107 $$->file->name, $$->lineno);
108 if (current_menu == $$)
110 } if_entry menu_entry choice_entry
113 input: mainmenu_stmt stmt_list | stmt_list;
117 mainmenu_stmt: T_MAINMENU prompt T_EOL
119 menu_add_prompt(P_MENU, $2, NULL);
124 | stmt_list common_stmt
125 | stmt_list choice_stmt
126 | stmt_list menu_stmt
127 | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); }
128 | stmt_list error T_EOL { zconf_error("invalid statement"); }
140 /* config/menuconfig entry */
142 config_entry_start: T_CONFIG nonconst_symbol T_EOL
144 $2->flags |= SYMBOL_OPTIONAL;
146 printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2->name);
149 config_stmt: config_entry_start config_option_list
151 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
154 menuconfig_entry_start: T_MENUCONFIG nonconst_symbol T_EOL
156 $2->flags |= SYMBOL_OPTIONAL;
158 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2->name);
161 menuconfig_stmt: menuconfig_entry_start config_option_list
163 if (current_entry->prompt)
164 current_entry->prompt->type = P_MENU;
166 zconfprint("warning: menuconfig statement without prompt");
167 printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
172 | config_option_list config_option
173 | config_option_list depends
174 | config_option_list help
177 config_option: type prompt_stmt_opt T_EOL
180 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
181 zconf_curname(), zconf_lineno(),
185 config_option: T_PROMPT prompt if_expr T_EOL
187 menu_add_prompt(P_PROMPT, $2, $3);
188 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
191 config_option: default expr if_expr T_EOL
193 menu_add_expr(P_DEFAULT, $2, $3);
196 printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
197 zconf_curname(), zconf_lineno(),
201 config_option: T_SELECT nonconst_symbol if_expr T_EOL
203 menu_add_symbol(P_SELECT, $2, $3);
204 printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
207 config_option: T_IMPLY nonconst_symbol if_expr T_EOL
209 menu_add_symbol(P_IMPLY, $2, $3);
210 printd(DEBUG_PARSE, "%s:%d:imply\n", zconf_curname(), zconf_lineno());
213 config_option: T_RANGE symbol symbol if_expr T_EOL
215 menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
216 printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
219 config_option: T_OPTION T_MODULES T_EOL
221 menu_add_option_modules();
224 config_option: T_OPTION T_DEFCONFIG_LIST T_EOL
226 menu_add_option_defconfig_list();
229 config_option: T_OPTION T_ALLNOCONFIG_Y T_EOL
231 menu_add_option_allnoconfig_y();
236 choice: T_CHOICE word_opt T_EOL
238 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
239 sym->flags |= SYMBOL_NO_WRITE;
241 menu_add_expr(P_CHOICE, NULL, NULL);
243 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
246 choice_entry: choice choice_option_list
248 $$ = menu_add_menu();
253 if (zconf_endtoken($1, "choice")) {
255 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
259 choice_stmt: choice_entry choice_block choice_end
264 | choice_option_list choice_option
265 | choice_option_list depends
266 | choice_option_list help
269 choice_option: T_PROMPT prompt if_expr T_EOL
271 menu_add_prompt(P_PROMPT, $2, $3);
272 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
275 choice_option: logic_type prompt_stmt_opt T_EOL
278 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
279 zconf_curname(), zconf_lineno(), $1);
282 choice_option: T_OPTIONAL T_EOL
284 current_entry->sym->flags |= SYMBOL_OPTIONAL;
285 printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
288 choice_option: T_DEFAULT nonconst_symbol if_expr T_EOL
290 menu_add_symbol(P_DEFAULT, $2, $3);
291 printd(DEBUG_PARSE, "%s:%d:default\n",
292 zconf_curname(), zconf_lineno());
297 | T_INT { $$ = S_INT; }
298 | T_HEX { $$ = S_HEX; }
299 | T_STRING { $$ = S_STRING; }
302 T_BOOL { $$ = S_BOOLEAN; }
303 | T_TRISTATE { $$ = S_TRISTATE; }
306 T_DEFAULT { $$ = S_UNKNOWN; }
307 | T_DEF_BOOL { $$ = S_BOOLEAN; }
308 | T_DEF_TRISTATE { $$ = S_TRISTATE; }
312 | choice_block common_stmt
317 if_entry: T_IF expr T_EOL
319 printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
320 menu_add_entry(NULL);
322 $$ = menu_add_menu();
327 if (zconf_endtoken($1, "if")) {
329 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
333 if_stmt: if_entry stmt_list if_end
338 menu: T_MENU prompt T_EOL
340 menu_add_entry(NULL);
341 menu_add_prompt(P_MENU, $2, NULL);
342 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
345 menu_entry: menu menu_option_list
347 $$ = menu_add_menu();
352 if (zconf_endtoken($1, "menu")) {
354 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
358 menu_stmt: menu_entry stmt_list menu_end
363 | menu_option_list visible
364 | menu_option_list depends
367 source_stmt: T_SOURCE prompt T_EOL
369 printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
376 comment: T_COMMENT prompt T_EOL
378 menu_add_entry(NULL);
379 menu_add_prompt(P_COMMENT, $2, NULL);
380 printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
383 comment_stmt: comment comment_option_list
388 | comment_option_list depends
393 help_start: T_HELP T_EOL
395 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
399 help: help_start T_HELPTEXT
401 if (current_entry->help) {
402 free(current_entry->help);
403 zconfprint("warning: '%s' defined with more than one help text -- only the last one will be used",
404 current_entry->sym->name ?: "<choice>");
407 /* Is the help text empty or all whitespace? */
408 if ($2[strspn($2, " \f\n\r\t\v")] == '\0')
409 zconfprint("warning: '%s' defined with blank help text",
410 current_entry->sym->name ?: "<choice>");
412 current_entry->help = $2;
417 depends: T_DEPENDS T_ON expr T_EOL
420 printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
423 /* visibility option */
424 visible: T_VISIBLE if_expr T_EOL
426 menu_add_visibility($2);
429 /* prompt statement */
435 menu_add_prompt(P_PROMPT, $1, $2);
442 end: T_ENDMENU T_EOL { $$ = "menu"; }
443 | T_ENDCHOICE T_EOL { $$ = "choice"; }
444 | T_ENDIF T_EOL { $$ = "if"; }
447 if_expr: /* empty */ { $$ = NULL; }
448 | T_IF expr { $$ = $2; }
451 expr: symbol { $$ = expr_alloc_symbol($1); }
452 | symbol T_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); }
453 | symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
454 | symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); }
455 | symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
456 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
457 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
458 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
459 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
460 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
461 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
464 /* For symbol definitions, selects, etc., where quotes are not accepted */
465 nonconst_symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); };
467 symbol: nonconst_symbol
468 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
471 word_opt: /* empty */ { $$ = NULL; }
474 /* assignment statement */
476 assignment_stmt: T_WORD assign_op assign_val T_EOL { variable_add($1, $3, $2); free($1); free($3); }
479 T_EQUAL { $$ = VAR_RECURSIVE; }
480 | T_COLON_EQUAL { $$ = VAR_SIMPLE; }
481 | T_PLUS_EQUAL { $$ = VAR_APPEND; }
485 /* empty */ { $$ = xstrdup(""); };
491 void conf_parse(const char *name)
496 zconf_initscan(name);
500 if (getenv("ZCONF_DEBUG"))
504 /* Variables are expanded in the parse phase. We can free them here. */
510 modules_sym = sym_find( "n" );
512 if (!menu_has_prompt(&rootmenu)) {
513 current_entry = &rootmenu;
514 menu_add_prompt(P_MENU, "Main menu", NULL);
517 menu_finalize(&rootmenu);
518 for_all_symbols(i, sym) {
519 if (sym_check_deps(sym))
524 sym_set_change_count(1);
527 static bool zconf_endtoken(const char *tokenname,
528 const char *expected_tokenname)
530 if (strcmp(tokenname, expected_tokenname)) {
531 zconf_error("unexpected '%s' within %s block",
532 tokenname, expected_tokenname);
536 if (current_menu->file != current_file) {
537 zconf_error("'%s' in different file than '%s'",
538 tokenname, expected_tokenname);
539 fprintf(stderr, "%s:%d: location of the '%s'\n",
540 current_menu->file->name, current_menu->lineno,
548 static void zconfprint(const char *err, ...)
552 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
554 vfprintf(stderr, err, ap);
556 fprintf(stderr, "\n");
559 static void zconf_error(const char *err, ...)
564 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
566 vfprintf(stderr, err, ap);
568 fprintf(stderr, "\n");
571 static void yyerror(const char *err)
573 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
576 static void print_quoted_string(FILE *out, const char *str)
582 while ((p = strchr(str, '"'))) {
585 fprintf(out, "%.*s", len, str);
593 static void print_symbol(FILE *out, struct menu *menu)
595 struct symbol *sym = menu->sym;
596 struct property *prop;
598 if (sym_is_choice(sym))
599 fprintf(out, "\nchoice\n");
601 fprintf(out, "\nconfig %s\n", sym->name);
604 fputs(" bool\n", out);
607 fputs(" tristate\n", out);
610 fputs(" string\n", out);
613 fputs(" integer\n", out);
616 fputs(" hex\n", out);
619 fputs(" ???\n", out);
622 for (prop = sym->prop; prop; prop = prop->next) {
623 if (prop->menu != menu)
625 switch (prop->type) {
627 fputs(" prompt ", out);
628 print_quoted_string(out, prop->text);
629 if (!expr_is_yes(prop->visible.expr)) {
631 expr_fprint(prop->visible.expr, out);
636 fputs( " default ", out);
637 expr_fprint(prop->expr, out);
638 if (!expr_is_yes(prop->visible.expr)) {
640 expr_fprint(prop->visible.expr, out);
645 fputs(" #choice value\n", out);
648 fputs( " select ", out);
649 expr_fprint(prop->expr, out);
653 fputs( " imply ", out);
654 expr_fprint(prop->expr, out);
658 fputs( " range ", out);
659 expr_fprint(prop->expr, out);
663 fputs( " menu ", out);
664 print_quoted_string(out, prop->text);
668 fputs( " symbol ", out);
669 fprintf(out, "%s\n", prop->sym->name);
672 fprintf(out, " unknown prop %d!\n", prop->type);
677 int len = strlen(menu->help);
678 while (menu->help[--len] == '\n')
680 fprintf(out, " help\n%s\n", menu->help);
684 void zconfdump(FILE *out)
686 struct property *prop;
690 menu = rootmenu.list;
692 if ((sym = menu->sym))
693 print_symbol(out, menu);
694 else if ((prop = menu->prompt)) {
695 switch (prop->type) {
697 fputs("\ncomment ", out);
698 print_quoted_string(out, prop->text);
702 fputs("\nmenu ", out);
703 print_quoted_string(out, prop->text);
709 if (!expr_is_yes(prop->visible.expr)) {
710 fputs(" depends ", out);
711 expr_fprint(prop->visible.expr, out);
720 else while ((menu = menu->parent)) {
721 if (menu->prompt && menu->prompt->type == P_MENU)
722 fputs("\nendmenu\n", out);