1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
17 #define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
20 #define DEBUG_PARSE 0x0002
24 static void yyerror(const char *err);
25 static void zconfprint(const char *err, ...);
26 static void zconf_error(const char *err, ...);
27 static bool zconf_endtoken(const char *tokenname,
28 const char *expected_tokenname);
30 struct symbol *symbol_hash[SYMBOL_HASHSIZE];
32 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
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_MODULES T_EOL
223 zconf_error("symbol '%s' redefines option 'modules' already defined by symbol '%s'",
224 current_entry->sym->name, modules_sym->name);
225 modules_sym = current_entry->sym;
230 choice: T_CHOICE word_opt T_EOL
232 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
233 sym->flags |= SYMBOL_NO_WRITE;
235 menu_add_expr(P_CHOICE, NULL, NULL);
237 printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
240 choice_entry: choice choice_option_list
242 $$ = menu_add_menu();
247 if (zconf_endtoken($1, "choice")) {
249 printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
253 choice_stmt: choice_entry stmt_list_in_choice choice_end
258 | choice_option_list choice_option
259 | choice_option_list depends
260 | choice_option_list help
263 choice_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
265 menu_add_prompt(P_PROMPT, $2, $3);
266 printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
269 choice_option: logic_type prompt_stmt_opt T_EOL
272 printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
273 zconf_curname(), zconf_lineno(), $1);
276 choice_option: T_OPTIONAL T_EOL
278 current_entry->sym->flags |= SYMBOL_OPTIONAL;
279 printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
282 choice_option: T_RESET if_expr T_EOL
284 menu_add_prop(P_RESET, NULL, $2);
287 choice_option: T_DEFAULT nonconst_symbol if_expr T_EOL
289 menu_add_symbol(P_DEFAULT, $2, $3);
290 printd(DEBUG_PARSE, "%s:%d:default\n",
291 zconf_curname(), zconf_lineno());
296 | T_INT { $$ = S_INT; }
297 | T_HEX { $$ = S_HEX; }
298 | T_STRING { $$ = S_STRING; }
301 T_BOOL { $$ = S_BOOLEAN; }
302 | T_TRISTATE { $$ = S_TRISTATE; }
305 T_DEFAULT { $$ = S_UNKNOWN; }
306 | T_DEF_BOOL { $$ = S_BOOLEAN; }
307 | T_DEF_TRISTATE { $$ = S_TRISTATE; }
311 if_entry: T_IF expr T_EOL
313 printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
314 menu_add_entry(NULL);
316 $$ = menu_add_menu();
321 if (zconf_endtoken($1, "if")) {
323 printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
327 if_stmt: if_entry stmt_list if_end
330 if_stmt_in_choice: if_entry stmt_list_in_choice if_end
335 menu: T_MENU T_WORD_QUOTE T_EOL
337 menu_add_entry(NULL);
338 menu_add_prompt(P_MENU, $2, NULL);
339 printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
342 menu_entry: menu menu_option_list
344 $$ = menu_add_menu();
349 if (zconf_endtoken($1, "menu")) {
351 printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
355 menu_stmt: menu_entry stmt_list menu_end
360 | menu_option_list visible
361 | menu_option_list depends
364 source_stmt: T_SOURCE T_WORD_QUOTE T_EOL
366 printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
373 comment: T_COMMENT T_WORD_QUOTE T_EOL
375 menu_add_entry(NULL);
376 menu_add_prompt(P_COMMENT, $2, NULL);
377 printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
380 comment_stmt: comment comment_option_list
385 | comment_option_list depends
390 help_start: T_HELP T_EOL
392 printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
396 help: help_start T_HELPTEXT
398 /* Is the help text empty or all whitespace? */
399 if ($2[strspn($2, " \f\n\r\t\v")] == '\0')
400 zconfprint("warning: '%s' defined with blank help text",
401 current_entry->sym->name ?: "<choice>");
403 current_entry->help = $2;
408 depends: T_DEPENDS T_ON expr T_EOL
411 printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
414 /* visibility option */
415 visible: T_VISIBLE if_expr T_EOL
417 menu_add_visibility($2);
420 /* prompt statement */
424 | T_WORD_QUOTE if_expr
426 menu_add_prompt(P_PROMPT, $1, $2);
429 end: T_ENDMENU T_EOL { $$ = "menu"; }
430 | T_ENDCHOICE T_EOL { $$ = "choice"; }
431 | T_ENDIF T_EOL { $$ = "if"; }
434 if_expr: /* empty */ { $$ = NULL; }
435 | T_IF expr { $$ = $2; }
438 expr: symbol { $$ = expr_alloc_symbol($1); }
439 | symbol T_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); }
440 | symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
441 | symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); }
442 | symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
443 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
444 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
445 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
446 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
447 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
448 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
451 /* For symbol definitions, selects, etc., where quotes are not accepted */
452 nonconst_symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); };
454 symbol: nonconst_symbol
455 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
458 word_opt: /* empty */ { $$ = NULL; }
461 /* assignment statement */
463 assignment_stmt: T_WORD assign_op assign_val T_EOL { variable_add($1, $3, $2); free($1); free($3); }
466 T_EQUAL { $$ = VAR_RECURSIVE; }
467 | T_COLON_EQUAL { $$ = VAR_SIMPLE; }
468 | T_PLUS_EQUAL { $$ = VAR_APPEND; }
472 /* empty */ { $$ = xstrdup(""); };
478 void conf_parse(const char *name)
483 zconf_initscan(name);
488 if (getenv("ZCONF_DEBUG"))
493 /* Variables are expanded in the parse phase. We can free them here. */
499 modules_sym = sym_find( "n" );
501 if (!menu_has_prompt(&rootmenu)) {
502 current_entry = &rootmenu;
503 menu_add_prompt(P_MENU, "Main menu", NULL);
506 menu_finalize(&rootmenu);
507 for_all_symbols(i, sym) {
508 if (sym_check_deps(sym))
513 conf_set_changed(true);
516 static bool zconf_endtoken(const char *tokenname,
517 const char *expected_tokenname)
519 if (strcmp(tokenname, expected_tokenname)) {
520 zconf_error("unexpected '%s' within %s block",
521 tokenname, expected_tokenname);
525 if (current_menu->file != current_file) {
526 zconf_error("'%s' in different file than '%s'",
527 tokenname, expected_tokenname);
528 fprintf(stderr, "%s:%d: location of the '%s'\n",
529 current_menu->file->name, current_menu->lineno,
537 static void zconfprint(const char *err, ...)
541 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
543 vfprintf(stderr, err, ap);
545 fprintf(stderr, "\n");
548 static void zconf_error(const char *err, ...)
553 fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
555 vfprintf(stderr, err, ap);
557 fprintf(stderr, "\n");
560 static void yyerror(const char *err)
562 fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
565 static void print_quoted_string(FILE *out, const char *str)
571 while ((p = strchr(str, '"'))) {
574 fprintf(out, "%.*s", len, str);
582 static void print_symbol(FILE *out, struct menu *menu)
584 struct symbol *sym = menu->sym;
585 struct property *prop;
587 if (sym_is_choice(sym))
588 fprintf(out, "\nchoice\n");
590 fprintf(out, "\nconfig %s\n", sym->name);
593 fputs(" bool\n", out);
596 fputs(" tristate\n", out);
599 fputs(" string\n", out);
602 fputs(" integer\n", out);
605 fputs(" hex\n", out);
608 fputs(" ???\n", out);
611 for (prop = sym->prop; prop; prop = prop->next) {
612 if (prop->menu != menu)
614 switch (prop->type) {
616 fputs(" prompt ", out);
617 print_quoted_string(out, prop->text);
618 if (!expr_is_yes(prop->visible.expr)) {
620 expr_fprint(prop->visible.expr, out);
625 fputs( " default ", out);
626 expr_fprint(prop->expr, out);
627 if (!expr_is_yes(prop->visible.expr)) {
629 expr_fprint(prop->visible.expr, out);
634 fputs(" #choice value\n", out);
637 fputs( " select ", out);
638 expr_fprint(prop->expr, out);
642 fputs( " imply ", out);
643 expr_fprint(prop->expr, out);
647 fputs( " range ", out);
648 expr_fprint(prop->expr, out);
652 fputs( " menu ", out);
653 print_quoted_string(out, prop->text);
657 fputs( " symbol ", out);
658 fprintf(out, "%s\n", prop->menu->sym->name);
661 fprintf(out, " unknown prop %d!\n", prop->type);
666 int len = strlen(menu->help);
667 while (menu->help[--len] == '\n')
669 fprintf(out, " help\n%s\n", menu->help);
673 void zconfdump(FILE *out)
675 struct property *prop;
679 menu = rootmenu.list;
681 if ((sym = menu->sym))
682 print_symbol(out, menu);
683 else if ((prop = menu->prompt)) {
684 switch (prop->type) {
686 fputs("\ncomment ", out);
687 print_quoted_string(out, prop->text);
691 fputs("\nmenu ", out);
692 print_quoted_string(out, prop->text);
698 if (!expr_is_yes(prop->visible.expr)) {
699 fputs(" depends ", out);
700 expr_fprint(prop->visible.expr, out);
709 else while ((menu = menu->parent)) {
710 if (menu->prompt && menu->prompt->type == P_MENU)
711 fputs("\nendmenu\n", out);