688 lines
14 KiB
Plaintext
688 lines
14 KiB
Plaintext
%{
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/*
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* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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* Released under the terms of the GNU GPL v2.0.
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*/
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#include <ctype.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
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#define PRINTD 0x0001
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#define DEBUG_PARSE 0x0002
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int cdebug = PRINTD;
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extern int zconflex(void);
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static void zconfprint(const char *err, ...);
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static void zconferror(const char *err);
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static bool zconf_endtoken(int token, int starttoken, int endtoken);
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struct symbol *symbol_hash[257];
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static struct menu *current_menu, *current_entry;
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#define YYERROR_VERBOSE
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%}
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%expect 40
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%union
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{
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int token;
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char *string;
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struct symbol *symbol;
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struct expr *expr;
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struct menu *menu;
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}
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%token T_MAINMENU
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%token T_MENU
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%token T_ENDMENU
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%token T_SOURCE
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%token T_CHOICE
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%token T_ENDCHOICE
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%token T_COMMENT
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%token T_CONFIG
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%token T_MENUCONFIG
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%token T_HELP
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%token <string> T_HELPTEXT
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%token T_IF
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%token T_ENDIF
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%token T_DEPENDS
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%token T_REQUIRES
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%token T_OPTIONAL
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%token T_PROMPT
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%token T_DEFAULT
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%token T_TRISTATE
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%token T_DEF_TRISTATE
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%token T_BOOLEAN
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%token T_DEF_BOOLEAN
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%token T_STRING
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%token T_INT
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%token T_HEX
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%token <string> T_WORD
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%token <string> T_WORD_QUOTE
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%token T_UNEQUAL
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%token T_EOF
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%token T_EOL
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%token T_CLOSE_PAREN
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%token T_OPEN_PAREN
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%token T_ON
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%token T_SELECT
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%token T_RANGE
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%left T_OR
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%left T_AND
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%left T_EQUAL T_UNEQUAL
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%nonassoc T_NOT
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%type <string> prompt
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%type <string> source
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%type <symbol> symbol
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%type <expr> expr
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%type <expr> if_expr
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%type <token> end
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%{
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#define LKC_DIRECT_LINK
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#include "lkc.h"
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%}
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%%
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input: /* empty */
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| input block
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;
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block: common_block
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| choice_stmt
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| menu_stmt
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| T_MAINMENU prompt nl_or_eof
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| T_ENDMENU { zconfprint("unexpected 'endmenu' statement"); }
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| T_ENDIF { zconfprint("unexpected 'endif' statement"); }
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| T_ENDCHOICE { zconfprint("unexpected 'endchoice' statement"); }
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| error nl_or_eof { zconfprint("syntax error"); yyerrok; }
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;
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common_block:
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if_stmt
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| comment_stmt
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| config_stmt
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| menuconfig_stmt
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| source_stmt
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| nl_or_eof
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;
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/* config/menuconfig entry */
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config_entry_start: T_CONFIG T_WORD T_EOL
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{
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struct symbol *sym = sym_lookup($2, 0);
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sym->flags |= SYMBOL_OPTIONAL;
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menu_add_entry(sym);
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printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2);
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};
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config_stmt: config_entry_start config_option_list
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{
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menu_end_entry();
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printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
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};
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menuconfig_entry_start: T_MENUCONFIG T_WORD T_EOL
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{
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struct symbol *sym = sym_lookup($2, 0);
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sym->flags |= SYMBOL_OPTIONAL;
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menu_add_entry(sym);
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printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2);
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};
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menuconfig_stmt: menuconfig_entry_start config_option_list
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{
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if (current_entry->prompt)
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current_entry->prompt->type = P_MENU;
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else
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zconfprint("warning: menuconfig statement without prompt");
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menu_end_entry();
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printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
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};
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config_option_list:
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/* empty */
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| config_option_list config_option
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| config_option_list depends
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| config_option_list help
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| config_option_list T_EOL
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;
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config_option: T_TRISTATE prompt_stmt_opt T_EOL
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{
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menu_set_type(S_TRISTATE);
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printd(DEBUG_PARSE, "%s:%d:tristate\n", zconf_curname(), zconf_lineno());
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};
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config_option: T_DEF_TRISTATE expr if_expr T_EOL
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{
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menu_add_expr(P_DEFAULT, $2, $3);
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menu_set_type(S_TRISTATE);
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printd(DEBUG_PARSE, "%s:%d:def_boolean\n", zconf_curname(), zconf_lineno());
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};
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config_option: T_BOOLEAN prompt_stmt_opt T_EOL
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{
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menu_set_type(S_BOOLEAN);
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printd(DEBUG_PARSE, "%s:%d:boolean\n", zconf_curname(), zconf_lineno());
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};
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config_option: T_DEF_BOOLEAN expr if_expr T_EOL
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{
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menu_add_expr(P_DEFAULT, $2, $3);
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menu_set_type(S_BOOLEAN);
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printd(DEBUG_PARSE, "%s:%d:def_boolean\n", zconf_curname(), zconf_lineno());
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};
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config_option: T_INT prompt_stmt_opt T_EOL
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{
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menu_set_type(S_INT);
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printd(DEBUG_PARSE, "%s:%d:int\n", zconf_curname(), zconf_lineno());
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};
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config_option: T_HEX prompt_stmt_opt T_EOL
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{
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menu_set_type(S_HEX);
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printd(DEBUG_PARSE, "%s:%d:hex\n", zconf_curname(), zconf_lineno());
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};
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config_option: T_STRING prompt_stmt_opt T_EOL
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{
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menu_set_type(S_STRING);
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printd(DEBUG_PARSE, "%s:%d:string\n", zconf_curname(), zconf_lineno());
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};
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config_option: T_PROMPT prompt if_expr T_EOL
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{
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menu_add_prompt(P_PROMPT, $2, $3);
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printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
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};
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config_option: T_DEFAULT expr if_expr T_EOL
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{
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menu_add_expr(P_DEFAULT, $2, $3);
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printd(DEBUG_PARSE, "%s:%d:default\n", zconf_curname(), zconf_lineno());
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};
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config_option: T_SELECT T_WORD if_expr T_EOL
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{
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menu_add_symbol(P_SELECT, sym_lookup($2, 0), $3);
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printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
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};
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config_option: T_RANGE symbol symbol if_expr T_EOL
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{
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menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
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printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
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};
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/* choice entry */
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choice: T_CHOICE T_EOL
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{
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struct symbol *sym = sym_lookup(NULL, 0);
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sym->flags |= SYMBOL_CHOICE;
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menu_add_entry(sym);
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menu_add_expr(P_CHOICE, NULL, NULL);
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printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
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};
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choice_entry: choice choice_option_list
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{
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menu_end_entry();
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menu_add_menu();
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};
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choice_end: end
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{
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if (zconf_endtoken($1, T_CHOICE, T_ENDCHOICE)) {
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menu_end_menu();
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printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
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}
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};
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choice_stmt:
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choice_entry choice_block choice_end
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| choice_entry choice_block
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{
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printf("%s:%d: missing 'endchoice' for this 'choice' statement\n", current_menu->file->name, current_menu->lineno);
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zconfnerrs++;
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};
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choice_option_list:
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/* empty */
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| choice_option_list choice_option
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| choice_option_list depends
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| choice_option_list help
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| choice_option_list T_EOL
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;
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choice_option: T_PROMPT prompt if_expr T_EOL
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{
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menu_add_prompt(P_PROMPT, $2, $3);
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printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
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};
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choice_option: T_TRISTATE prompt_stmt_opt T_EOL
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{
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menu_set_type(S_TRISTATE);
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printd(DEBUG_PARSE, "%s:%d:tristate\n", zconf_curname(), zconf_lineno());
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};
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choice_option: T_BOOLEAN prompt_stmt_opt T_EOL
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{
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menu_set_type(S_BOOLEAN);
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printd(DEBUG_PARSE, "%s:%d:boolean\n", zconf_curname(), zconf_lineno());
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};
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choice_option: T_OPTIONAL T_EOL
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{
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current_entry->sym->flags |= SYMBOL_OPTIONAL;
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printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
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};
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choice_option: T_DEFAULT T_WORD if_expr T_EOL
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{
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menu_add_symbol(P_DEFAULT, sym_lookup($2, 0), $3);
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printd(DEBUG_PARSE, "%s:%d:default\n", zconf_curname(), zconf_lineno());
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};
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choice_block:
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/* empty */
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| choice_block common_block
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;
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/* if entry */
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if: T_IF expr T_EOL
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{
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printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
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menu_add_entry(NULL);
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menu_add_dep($2);
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menu_end_entry();
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menu_add_menu();
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};
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if_end: end
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{
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if (zconf_endtoken($1, T_IF, T_ENDIF)) {
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menu_end_menu();
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printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
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}
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};
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if_stmt:
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if if_block if_end
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| if if_block
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{
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printf("%s:%d: missing 'endif' for this 'if' statement\n", current_menu->file->name, current_menu->lineno);
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zconfnerrs++;
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};
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if_block:
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/* empty */
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| if_block common_block
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| if_block menu_stmt
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| if_block choice_stmt
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;
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/* menu entry */
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menu: T_MENU prompt T_EOL
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{
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menu_add_entry(NULL);
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menu_add_prompt(P_MENU, $2, NULL);
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printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
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};
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menu_entry: menu depends_list
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{
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menu_end_entry();
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menu_add_menu();
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};
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menu_end: end
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{
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if (zconf_endtoken($1, T_MENU, T_ENDMENU)) {
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menu_end_menu();
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printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
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}
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};
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menu_stmt:
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menu_entry menu_block menu_end
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| menu_entry menu_block
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{
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printf("%s:%d: missing 'endmenu' for this 'menu' statement\n", current_menu->file->name, current_menu->lineno);
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zconfnerrs++;
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};
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menu_block:
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/* empty */
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| menu_block common_block
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| menu_block menu_stmt
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| menu_block choice_stmt
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| menu_block error T_EOL { zconfprint("invalid menu option"); yyerrok; }
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;
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source: T_SOURCE prompt T_EOL
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{
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$$ = $2;
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printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
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};
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source_stmt: source
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{
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zconf_nextfile($1);
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};
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/* comment entry */
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comment: T_COMMENT prompt T_EOL
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{
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menu_add_entry(NULL);
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menu_add_prompt(P_COMMENT, $2, NULL);
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printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
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};
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comment_stmt: comment depends_list
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{
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menu_end_entry();
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};
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/* help option */
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help_start: T_HELP T_EOL
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{
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printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
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zconf_starthelp();
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};
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help: help_start T_HELPTEXT
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{
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current_entry->sym->help = $2;
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};
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/* depends option */
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depends_list: /* empty */
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| depends_list depends
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| depends_list T_EOL
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;
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depends: T_DEPENDS T_ON expr T_EOL
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{
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menu_add_dep($3);
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printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
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}
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| T_DEPENDS expr T_EOL
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{
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menu_add_dep($2);
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printd(DEBUG_PARSE, "%s:%d:depends\n", zconf_curname(), zconf_lineno());
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}
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| T_REQUIRES expr T_EOL
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{
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menu_add_dep($2);
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printd(DEBUG_PARSE, "%s:%d:requires\n", zconf_curname(), zconf_lineno());
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};
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/* prompt statement */
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prompt_stmt_opt:
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/* empty */
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| prompt if_expr
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{
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menu_add_prompt(P_PROMPT, $1, $2);
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};
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prompt: T_WORD
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| T_WORD_QUOTE
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;
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end: T_ENDMENU nl_or_eof { $$ = T_ENDMENU; }
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| T_ENDCHOICE nl_or_eof { $$ = T_ENDCHOICE; }
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| T_ENDIF nl_or_eof { $$ = T_ENDIF; }
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;
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nl_or_eof:
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T_EOL | T_EOF;
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if_expr: /* empty */ { $$ = NULL; }
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| T_IF expr { $$ = $2; }
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;
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expr: symbol { $$ = expr_alloc_symbol($1); }
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| symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
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| symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
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| T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; }
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| T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); }
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| expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); }
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| expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); }
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;
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symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); }
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| T_WORD_QUOTE { $$ = sym_lookup($1, 1); free($1); }
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;
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%%
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void conf_parse(const char *name)
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{
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struct symbol *sym;
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int i;
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zconf_initscan(name);
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sym_init();
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menu_init();
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modules_sym = sym_lookup("MODULES", 0);
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rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL);
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//zconfdebug = 1;
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zconfparse();
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if (zconfnerrs)
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exit(1);
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menu_finalize(&rootmenu);
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for_all_symbols(i, sym) {
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sym_check_deps(sym);
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}
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sym_change_count = 1;
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}
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const char *zconf_tokenname(int token)
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{
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switch (token) {
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case T_MENU: return "menu";
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case T_ENDMENU: return "endmenu";
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case T_CHOICE: return "choice";
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case T_ENDCHOICE: return "endchoice";
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case T_IF: return "if";
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case T_ENDIF: return "endif";
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}
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return "<token>";
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}
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static bool zconf_endtoken(int token, int starttoken, int endtoken)
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{
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if (token != endtoken) {
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zconfprint("unexpected '%s' within %s block", zconf_tokenname(token), zconf_tokenname(starttoken));
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zconfnerrs++;
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return false;
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}
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if (current_menu->file != current_file) {
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zconfprint("'%s' in different file than '%s'", zconf_tokenname(token), zconf_tokenname(starttoken));
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zconfprint("location of the '%s'", zconf_tokenname(starttoken));
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zconfnerrs++;
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return false;
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}
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return true;
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}
|
|
|
|
static void zconfprint(const char *err, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno() + 1);
|
|
va_start(ap, err);
|
|
vfprintf(stderr, err, ap);
|
|
va_end(ap);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
static void zconferror(const char *err)
|
|
{
|
|
fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
|
|
}
|
|
|
|
void print_quoted_string(FILE *out, const char *str)
|
|
{
|
|
const char *p;
|
|
int len;
|
|
|
|
putc('"', out);
|
|
while ((p = strchr(str, '"'))) {
|
|
len = p - str;
|
|
if (len)
|
|
fprintf(out, "%.*s", len, str);
|
|
fputs("\\\"", out);
|
|
str = p + 1;
|
|
}
|
|
fputs(str, out);
|
|
putc('"', out);
|
|
}
|
|
|
|
void print_symbol(FILE *out, struct menu *menu)
|
|
{
|
|
struct symbol *sym = menu->sym;
|
|
struct property *prop;
|
|
|
|
if (sym_is_choice(sym))
|
|
fprintf(out, "choice\n");
|
|
else
|
|
fprintf(out, "config %s\n", sym->name);
|
|
switch (sym->type) {
|
|
case S_BOOLEAN:
|
|
fputs(" boolean\n", out);
|
|
break;
|
|
case S_TRISTATE:
|
|
fputs(" tristate\n", out);
|
|
break;
|
|
case S_STRING:
|
|
fputs(" string\n", out);
|
|
break;
|
|
case S_INT:
|
|
fputs(" integer\n", out);
|
|
break;
|
|
case S_HEX:
|
|
fputs(" hex\n", out);
|
|
break;
|
|
default:
|
|
fputs(" ???\n", out);
|
|
break;
|
|
}
|
|
for (prop = sym->prop; prop; prop = prop->next) {
|
|
if (prop->menu != menu)
|
|
continue;
|
|
switch (prop->type) {
|
|
case P_PROMPT:
|
|
fputs(" prompt ", out);
|
|
print_quoted_string(out, prop->text);
|
|
if (!expr_is_yes(prop->visible.expr)) {
|
|
fputs(" if ", out);
|
|
expr_fprint(prop->visible.expr, out);
|
|
}
|
|
fputc('\n', out);
|
|
break;
|
|
case P_DEFAULT:
|
|
fputs( " default ", out);
|
|
expr_fprint(prop->expr, out);
|
|
if (!expr_is_yes(prop->visible.expr)) {
|
|
fputs(" if ", out);
|
|
expr_fprint(prop->visible.expr, out);
|
|
}
|
|
fputc('\n', out);
|
|
break;
|
|
case P_CHOICE:
|
|
fputs(" #choice value\n", out);
|
|
break;
|
|
default:
|
|
fprintf(out, " unknown prop %d!\n", prop->type);
|
|
break;
|
|
}
|
|
}
|
|
if (sym->help) {
|
|
int len = strlen(sym->help);
|
|
while (sym->help[--len] == '\n')
|
|
sym->help[len] = 0;
|
|
fprintf(out, " help\n%s\n", sym->help);
|
|
}
|
|
fputc('\n', out);
|
|
}
|
|
|
|
void zconfdump(FILE *out)
|
|
{
|
|
struct property *prop;
|
|
struct symbol *sym;
|
|
struct menu *menu;
|
|
|
|
menu = rootmenu.list;
|
|
while (menu) {
|
|
if ((sym = menu->sym))
|
|
print_symbol(out, menu);
|
|
else if ((prop = menu->prompt)) {
|
|
switch (prop->type) {
|
|
case P_COMMENT:
|
|
fputs("\ncomment ", out);
|
|
print_quoted_string(out, prop->text);
|
|
fputs("\n", out);
|
|
break;
|
|
case P_MENU:
|
|
fputs("\nmenu ", out);
|
|
print_quoted_string(out, prop->text);
|
|
fputs("\n", out);
|
|
break;
|
|
default:
|
|
;
|
|
}
|
|
if (!expr_is_yes(prop->visible.expr)) {
|
|
fputs(" depends ", out);
|
|
expr_fprint(prop->visible.expr, out);
|
|
fputc('\n', out);
|
|
}
|
|
fputs("\n", out);
|
|
}
|
|
|
|
if (menu->list)
|
|
menu = menu->list;
|
|
else if (menu->next)
|
|
menu = menu->next;
|
|
else while ((menu = menu->parent)) {
|
|
if (menu->prompt && menu->prompt->type == P_MENU)
|
|
fputs("\nendmenu\n", out);
|
|
if (menu->next) {
|
|
menu = menu->next;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#include "lex.zconf.c"
|
|
#include "util.c"
|
|
#include "confdata.c"
|
|
#include "expr.c"
|
|
#include "symbol.c"
|
|
#include "menu.c"
|