1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
16 #include "preprocess.h"
18 #define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
21 #define DEBUG_PARSE 0x0002
25 static void yyerror(const char *err);
26 static void zconfprint(const char *err, ...);
27 static void zconf_error(const char *err, ...);
28 static bool zconf_endtoken(const char *tokenname,
29 const char *expected_tokenname);
31 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
82 %token <string> T_ASSIGN_VAL
86 %left T_EQUAL T_UNEQUAL
87 %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
90 %type <symbol> nonconst_symbol
92 %type <type> type logic_type default
96 %type <menu> if_entry menu_entry choice_entry
97 %type <string> word_opt assign_val
98 %type <flavor> assign_op
101 fprintf(stderr, "%s:%d: missing end statement for this entry\n",
102 $$->filename, $$->lineno);
103 if (current_menu == $$)
105 } if_entry menu_entry choice_entry
108 input: mainmenu_stmt stmt_list | stmt_list;
112 mainmenu_stmt: T_MAINMENU T_WORD_QUOTE T_EOL
114 menu_add_prompt(P_MENU, $2, NULL);
119 | stmt_list assignment_stmt
120 | stmt_list choice_stmt
121 | stmt_list comment_stmt
122 | stmt_list config_stmt
124 | stmt_list menu_stmt
125 | stmt_list menuconfig_stmt
126 | stmt_list source_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"); }
133 | stmt_list_in_choice comment_stmt
134 | stmt_list_in_choice config_stmt
135 | stmt_list_in_choice if_stmt_in_choice
136 | stmt_list_in_choice error T_EOL { zconf_error("invalid statement"); }
139 /* config/menuconfig entry */
141 config_entry_start: T_CONFIG nonconst_symbol T_EOL
143 $2->flags |= SYMBOL_OPTIONAL;
145 printd(DEBUG_PARSE, "%s:%d:config %s\n", cur_filename, cur_lineno, $2->name);
148 config_stmt: config_entry_start config_option_list
150 printd(DEBUG_PARSE, "%s:%d:endconfig\n", cur_filename, cur_lineno);
153 menuconfig_entry_start: T_MENUCONFIG nonconst_symbol T_EOL
155 $2->flags |= SYMBOL_OPTIONAL;
157 printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", cur_filename, cur_lineno, $2->name);
160 menuconfig_stmt: menuconfig_entry_start config_option_list
162 if (current_entry->prompt)
163 current_entry->prompt->type = P_MENU;
165 zconfprint("warning: menuconfig statement without prompt");
166 printd(DEBUG_PARSE, "%s:%d:endconfig\n", cur_filename, cur_lineno);
171 | config_option_list config_option
172 | config_option_list depends
173 | config_option_list help
176 config_option: type prompt_stmt_opt T_EOL
179 printd(DEBUG_PARSE, "%s:%d:type(%u)\n", cur_filename, cur_lineno, $1);
182 config_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
184 menu_add_prompt(P_PROMPT, $2, $3);
185 printd(DEBUG_PARSE, "%s:%d:prompt\n", cur_filename, cur_lineno);
188 config_option: default expr if_expr T_EOL
190 menu_add_expr(P_DEFAULT, $2, $3);
193 printd(DEBUG_PARSE, "%s:%d:default(%u)\n", cur_filename, cur_lineno,
197 config_option: T_SELECT nonconst_symbol if_expr T_EOL
199 menu_add_symbol(P_SELECT, $2, $3);
200 printd(DEBUG_PARSE, "%s:%d:select\n", cur_filename, cur_lineno);
203 config_option: T_IMPLY nonconst_symbol if_expr T_EOL
205 menu_add_symbol(P_IMPLY, $2, $3);
206 printd(DEBUG_PARSE, "%s:%d:imply\n", cur_filename, cur_lineno);
209 config_option: T_RANGE symbol symbol if_expr T_EOL
211 menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
212 printd(DEBUG_PARSE, "%s:%d:range\n", cur_filename, cur_lineno);
215 config_option: T_MODULES T_EOL
218 zconf_error("symbol '%s' redefines option 'modules' already defined by symbol '%s'",
219 current_entry->sym->name, modules_sym->name);
220 modules_sym = current_entry->sym;
225 choice: T_CHOICE word_opt T_EOL
227 struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
228 sym->flags |= SYMBOL_NO_WRITE;
230 menu_add_expr(P_CHOICE, NULL, NULL);
232 printd(DEBUG_PARSE, "%s:%d:choice\n", cur_filename, cur_lineno);
235 choice_entry: choice choice_option_list
237 $$ = menu_add_menu();
242 if (zconf_endtoken($1, "choice")) {
244 printd(DEBUG_PARSE, "%s:%d:endchoice\n", cur_filename, cur_lineno);
248 choice_stmt: choice_entry stmt_list_in_choice choice_end
253 | choice_option_list choice_option
254 | choice_option_list depends
255 | choice_option_list help
258 choice_option: T_PROMPT T_WORD_QUOTE if_expr T_EOL
260 menu_add_prompt(P_PROMPT, $2, $3);
261 printd(DEBUG_PARSE, "%s:%d:prompt\n", cur_filename, cur_lineno);
264 choice_option: logic_type prompt_stmt_opt T_EOL
267 printd(DEBUG_PARSE, "%s:%d:type(%u)\n", cur_filename, cur_lineno, $1);
270 choice_option: T_OPTIONAL T_EOL
272 current_entry->sym->flags |= SYMBOL_OPTIONAL;
273 printd(DEBUG_PARSE, "%s:%d:optional\n", cur_filename, cur_lineno);
276 choice_option: T_DEFAULT nonconst_symbol if_expr T_EOL
278 menu_add_symbol(P_DEFAULT, $2, $3);
279 printd(DEBUG_PARSE, "%s:%d:default\n", cur_filename, cur_lineno);
284 | T_INT { $$ = S_INT; }
285 | T_HEX { $$ = S_HEX; }
286 | T_STRING { $$ = S_STRING; }
289 T_BOOL { $$ = S_BOOLEAN; }
290 | T_TRISTATE { $$ = S_TRISTATE; }
293 T_DEFAULT { $$ = S_UNKNOWN; }
294 | T_DEF_BOOL { $$ = S_BOOLEAN; }
295 | T_DEF_TRISTATE { $$ = S_TRISTATE; }
299 if_entry: T_IF expr T_EOL
301 printd(DEBUG_PARSE, "%s:%d:if\n", cur_filename, cur_lineno);
302 menu_add_entry(NULL);
304 $$ = menu_add_menu();
309 if (zconf_endtoken($1, "if")) {
311 printd(DEBUG_PARSE, "%s:%d:endif\n", cur_filename, cur_lineno);
315 if_stmt: if_entry stmt_list if_end
318 if_stmt_in_choice: if_entry stmt_list_in_choice if_end
323 menu: T_MENU T_WORD_QUOTE T_EOL
325 menu_add_entry(NULL);
326 menu_add_prompt(P_MENU, $2, NULL);
327 printd(DEBUG_PARSE, "%s:%d:menu\n", cur_filename, cur_lineno);
330 menu_entry: menu menu_option_list
332 $$ = menu_add_menu();
337 if (zconf_endtoken($1, "menu")) {
339 printd(DEBUG_PARSE, "%s:%d:endmenu\n", cur_filename, cur_lineno);
343 menu_stmt: menu_entry stmt_list menu_end
348 | menu_option_list visible
349 | menu_option_list depends
352 source_stmt: T_SOURCE T_WORD_QUOTE T_EOL
354 printd(DEBUG_PARSE, "%s:%d:source %s\n", cur_filename, cur_lineno, $2);
361 comment: T_COMMENT T_WORD_QUOTE T_EOL
363 menu_add_entry(NULL);
364 menu_add_prompt(P_COMMENT, $2, NULL);
365 printd(DEBUG_PARSE, "%s:%d:comment\n", cur_filename, cur_lineno);
368 comment_stmt: comment comment_option_list
373 | comment_option_list depends
378 help_start: T_HELP T_EOL
380 printd(DEBUG_PARSE, "%s:%d:help\n", cur_filename, cur_lineno);
384 help: help_start T_HELPTEXT
386 if (current_entry->help) {
387 free(current_entry->help);
388 zconfprint("warning: '%s' defined with more than one help text -- only the last one will be used",
389 current_entry->sym->name ?: "<choice>");
392 /* Is the help text empty or all whitespace? */
393 if ($2[strspn($2, " \f\n\r\t\v")] == '\0')
394 zconfprint("warning: '%s' defined with blank help text",
395 current_entry->sym->name ?: "<choice>");
397 current_entry->help = $2;
402 depends: T_DEPENDS T_ON expr T_EOL
405 printd(DEBUG_PARSE, "%s:%d:depends on\n", cur_filename, cur_lineno);
408 /* visibility option */
409 visible: T_VISIBLE if_expr T_EOL
411 menu_add_visibility($2);
414 /* prompt statement */
418 | T_WORD_QUOTE if_expr
420 menu_add_prompt(P_PROMPT, $1, $2);
423 end: T_ENDMENU T_EOL { $$ = "menu"; }
424 | T_ENDCHOICE T_EOL { $$ = "choice"; }
425 | T_ENDIF T_EOL { $$ = "if"; }
428 if_expr: /* empty */ { $$ = NULL; }
429 | T_IF expr { $$ = $2; }
432 expr: symbol { $$ = expr_alloc_symbol($1); }
433 | symbol T_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); }
434 | symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
435 | symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); }
436 | symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
437 | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
438 | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
439 | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
440 | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
441 | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
442 | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
445 /* For symbol definitions, selects, etc., where quotes are not accepted */
446 nonconst_symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); };
448 symbol: nonconst_symbol
449 | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
452 word_opt: /* empty */ { $$ = NULL; }
455 /* assignment statement */
457 assignment_stmt: T_WORD assign_op assign_val T_EOL { variable_add($1, $3, $2); free($1); free($3); }
460 T_EQUAL { $$ = VAR_RECURSIVE; }
461 | T_COLON_EQUAL { $$ = VAR_SIMPLE; }
462 | T_PLUS_EQUAL { $$ = VAR_APPEND; }
466 /* empty */ { $$ = xstrdup(""); };
472 void conf_parse(const char *name)
476 autoconf_cmd = str_new();
478 str_printf(&autoconf_cmd, "\ndeps_config := \\\n");
480 zconf_initscan(name);
484 if (getenv("ZCONF_DEBUG"))
490 * cur_filename and cur_lineno are used even after yyparse();
491 * menu_finalize() calls menu_add_symbol(). This should be fixed.
493 cur_filename = "<none>";
496 str_printf(&autoconf_cmd,
498 "$(autoconfig): $(deps_config)\n"
499 "$(deps_config): ;\n");
501 env_write_dep(&autoconf_cmd);
503 /* Variables are expanded in the parse phase. We can free them here. */
509 modules_sym = &symbol_no;
511 if (!menu_has_prompt(&rootmenu)) {
512 current_entry = &rootmenu;
513 menu_add_prompt(P_MENU, "Main menu", NULL);
516 menu_finalize(&rootmenu);
520 if (menu->sym && sym_check_deps(menu->sym))
528 while (!menu->next && menu->parent)
536 conf_set_changed(true);
539 static bool zconf_endtoken(const char *tokenname,
540 const char *expected_tokenname)
542 if (strcmp(tokenname, expected_tokenname)) {
543 zconf_error("unexpected '%s' within %s block",
544 tokenname, expected_tokenname);
548 if (strcmp(current_menu->filename, cur_filename)) {
549 zconf_error("'%s' in different file than '%s'",
550 tokenname, expected_tokenname);
551 fprintf(stderr, "%s:%d: location of the '%s'\n",
552 current_menu->filename, current_menu->lineno,
560 static void zconfprint(const char *err, ...)
564 fprintf(stderr, "%s:%d: ", cur_filename, cur_lineno);
566 vfprintf(stderr, err, ap);
568 fprintf(stderr, "\n");
571 static void zconf_error(const char *err, ...)
576 fprintf(stderr, "%s:%d: ", cur_filename, cur_lineno);
578 vfprintf(stderr, err, ap);
580 fprintf(stderr, "\n");
583 static void yyerror(const char *err)
585 fprintf(stderr, "%s:%d: %s\n", cur_filename, cur_lineno, err);
588 static void print_quoted_string(FILE *out, const char *str)
594 while ((p = strchr(str, '"'))) {
597 fprintf(out, "%.*s", len, str);
605 static void print_symbol(FILE *out, struct menu *menu)
607 struct symbol *sym = menu->sym;
608 struct property *prop;
610 if (sym_is_choice(sym))
611 fprintf(out, "\nchoice\n");
613 fprintf(out, "\nconfig %s\n", sym->name);
616 fputs(" bool\n", out);
619 fputs(" tristate\n", out);
622 fputs(" string\n", out);
625 fputs(" integer\n", out);
628 fputs(" hex\n", out);
631 fputs(" ???\n", out);
634 for (prop = sym->prop; prop; prop = prop->next) {
635 if (prop->menu != menu)
637 switch (prop->type) {
639 fputs(" prompt ", out);
640 print_quoted_string(out, prop->text);
641 if (!expr_is_yes(prop->visible.expr)) {
643 expr_fprint(prop->visible.expr, out);
648 fputs( " default ", out);
649 expr_fprint(prop->expr, out);
650 if (!expr_is_yes(prop->visible.expr)) {
652 expr_fprint(prop->visible.expr, out);
657 fputs(" #choice value\n", out);
660 fputs( " select ", out);
661 expr_fprint(prop->expr, out);
665 fputs( " imply ", out);
666 expr_fprint(prop->expr, out);
670 fputs( " range ", out);
671 expr_fprint(prop->expr, out);
675 fputs( " menu ", out);
676 print_quoted_string(out, prop->text);
680 fputs( " symbol ", out);
681 fprintf(out, "%s\n", prop->menu->sym->name);
684 fprintf(out, " unknown prop %d!\n", prop->type);
689 int len = strlen(menu->help);
690 while (menu->help[--len] == '\n')
692 fprintf(out, " help\n%s\n", menu->help);
696 void zconfdump(FILE *out)
698 struct property *prop;
702 menu = rootmenu.list;
704 if ((sym = menu->sym))
705 print_symbol(out, menu);
706 else if ((prop = menu->prompt)) {
707 switch (prop->type) {
709 fputs("\ncomment ", out);
710 print_quoted_string(out, prop->text);
714 fputs("\nmenu ", out);
715 print_quoted_string(out, prop->text);
721 if (!expr_is_yes(prop->visible.expr)) {
722 fputs(" depends ", out);
723 expr_fprint(prop->visible.expr, out);
732 else while ((menu = menu->parent)) {
733 if (menu->prompt && menu->prompt->type == P_MENU)
734 fputs("\nendmenu\n", out);