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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Masahiro Yamada](/assets/img/avatar_default.png)
The named choice is not used in the kernel tree, but if it were used,
it would not be freed.
The intention of the named choice can be seen in the log of
commit 5a1aa8a1af
("kconfig: add named choice group").
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Ulf Magnusson <ulfalizer@gmail.com>
782 lines
16 KiB
Text
782 lines
16 KiB
Text
%{
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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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#include "lkc.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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int yylex(void);
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static void yyerror(const char *err);
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static void zconfprint(const char *err, ...);
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static void zconf_error(const char *err, ...);
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static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken);
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struct symbol *symbol_hash[SYMBOL_HASHSIZE];
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static struct menu *current_menu, *current_entry;
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%}
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%expect 32
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%union
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{
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char *string;
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struct file *file;
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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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const struct kconf_id *id;
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}
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%token <id>T_MAINMENU
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%token <id>T_MENU
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%token <id>T_ENDMENU
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%token <id>T_SOURCE
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%token <id>T_CHOICE
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%token <id>T_ENDCHOICE
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%token <id>T_COMMENT
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%token <id>T_CONFIG
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%token <id>T_MENUCONFIG
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%token <id>T_HELP
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%token <string> T_HELPTEXT
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%token <id>T_IF
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%token <id>T_ENDIF
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%token <id>T_DEPENDS
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%token <id>T_OPTIONAL
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%token <id>T_PROMPT
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%token <id>T_TYPE
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%token <id>T_DEFAULT
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%token <id>T_SELECT
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%token <id>T_IMPLY
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%token <id>T_RANGE
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%token <id>T_VISIBLE
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%token <id>T_OPTION
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%token <id>T_ON
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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_LESS
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%token T_LESS_EQUAL
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%token T_GREATER
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%token T_GREATER_EQUAL
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%token T_CLOSE_PAREN
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%token T_OPEN_PAREN
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%token T_EOL
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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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%left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL
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%nonassoc T_NOT
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%type <string> prompt
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%type <symbol> nonconst_symbol
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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 <id> end
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%type <id> option_name
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%type <menu> if_entry menu_entry choice_entry
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%type <string> symbol_option_arg word_opt
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%destructor {
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fprintf(stderr, "%s:%d: missing end statement for this entry\n",
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$$->file->name, $$->lineno);
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if (current_menu == $$)
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menu_end_menu();
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} if_entry menu_entry choice_entry
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%{
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/* Include kconf_id.c here so it can see the token constants. */
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#include "kconf_id.c"
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%}
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%%
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input: nl start | start;
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start: mainmenu_stmt stmt_list | no_mainmenu_stmt stmt_list;
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/* mainmenu entry */
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mainmenu_stmt: T_MAINMENU prompt nl
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{
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menu_add_prompt(P_MENU, $2, NULL);
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};
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/* Default main menu, if there's no mainmenu entry */
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no_mainmenu_stmt: /* empty */
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{
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/*
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* Hack: Keep the main menu title on the heap so we can safely free it
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* later regardless of whether it comes from the 'prompt' in
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* mainmenu_stmt or here
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*/
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menu_add_prompt(P_MENU, xstrdup("Linux Kernel Configuration"), NULL);
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};
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stmt_list:
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/* empty */
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| stmt_list common_stmt
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| stmt_list choice_stmt
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| stmt_list menu_stmt
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| stmt_list end { zconf_error("unexpected end statement"); }
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| stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); }
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| stmt_list option_name error T_EOL
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{
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zconf_error("unexpected option \"%s\"", $2->name);
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}
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| stmt_list error T_EOL { zconf_error("invalid statement"); }
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;
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option_name:
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T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_IMPLY | T_OPTIONAL | T_RANGE | T_DEFAULT | T_VISIBLE
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;
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common_stmt:
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T_EOL
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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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;
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option_error:
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T_WORD error T_EOL { zconf_error("unknown option \"%s\"", $1); }
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| error T_EOL { zconf_error("invalid option"); }
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;
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/* config/menuconfig entry */
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config_entry_start: T_CONFIG nonconst_symbol T_EOL
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{
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$2->flags |= SYMBOL_OPTIONAL;
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menu_add_entry($2);
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printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2->name);
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};
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config_stmt: config_entry_start config_option_list
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{
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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 nonconst_symbol T_EOL
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{
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$2->flags |= SYMBOL_OPTIONAL;
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menu_add_entry($2);
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printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2->name);
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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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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 symbol_option
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| config_option_list depends
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| config_option_list help
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| config_option_list option_error
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| config_option_list T_EOL
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;
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config_option: T_TYPE prompt_stmt_opt T_EOL
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{
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menu_set_type($1->stype);
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printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
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zconf_curname(), zconf_lineno(),
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$1->stype);
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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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if ($1->stype != S_UNKNOWN)
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menu_set_type($1->stype);
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printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
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zconf_curname(), zconf_lineno(),
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$1->stype);
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};
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config_option: T_SELECT nonconst_symbol if_expr T_EOL
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{
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menu_add_symbol(P_SELECT, $2, $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_IMPLY nonconst_symbol if_expr T_EOL
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{
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menu_add_symbol(P_IMPLY, $2, $3);
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printd(DEBUG_PARSE, "%s:%d:imply\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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symbol_option: T_OPTION symbol_option_list T_EOL
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;
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symbol_option_list:
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/* empty */
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| symbol_option_list T_WORD symbol_option_arg
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{
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const struct kconf_id *id = kconf_id_lookup($2, strlen($2));
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if (id && id->flags & TF_OPTION) {
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menu_add_option(id->token, $3);
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free($3);
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}
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else
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zconfprint("warning: ignoring unknown option %s", $2);
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free($2);
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};
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symbol_option_arg:
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/* empty */ { $$ = NULL; }
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| T_EQUAL prompt { $$ = $2; }
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;
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/* choice entry */
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choice: T_CHOICE word_opt T_EOL
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{
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struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE);
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sym->flags |= SYMBOL_AUTO;
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menu_add_entry(sym);
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menu_add_expr(P_CHOICE, NULL, NULL);
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free($2);
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printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
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};
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choice_entry: choice choice_option_list
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{
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$$ = menu_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: choice_entry choice_block choice_end
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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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| choice_option_list option_error
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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_TYPE prompt_stmt_opt T_EOL
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{
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if ($1->stype == S_BOOLEAN || $1->stype == S_TRISTATE) {
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menu_set_type($1->stype);
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printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
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zconf_curname(), zconf_lineno(),
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$1->stype);
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} else
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YYERROR;
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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 nonconst_symbol if_expr T_EOL
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{
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if ($1->stype == S_UNKNOWN) {
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menu_add_symbol(P_DEFAULT, $2, $3);
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printd(DEBUG_PARSE, "%s:%d:default\n",
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zconf_curname(), zconf_lineno());
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} else
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YYERROR;
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};
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choice_block:
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/* empty */
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| choice_block common_stmt
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;
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/* if entry */
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if_entry: T_IF expr nl
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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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$$ = menu_add_menu();
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};
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if_end: end
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{
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if (zconf_endtoken($1, T_IF, T_ENDIF)) {
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menu_end_menu();
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printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
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}
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};
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if_stmt: if_entry if_block if_end
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;
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if_block:
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/* empty */
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| if_block common_stmt
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| if_block menu_stmt
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| if_block choice_stmt
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;
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/* menu entry */
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menu: T_MENU prompt T_EOL
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{
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menu_add_entry(NULL);
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menu_add_prompt(P_MENU, $2, NULL);
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printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
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};
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menu_entry: menu visibility_list depends_list
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{
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$$ = 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: menu_entry menu_block menu_end
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;
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menu_block:
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/* empty */
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| menu_block common_stmt
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| menu_block menu_stmt
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| menu_block choice_stmt
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;
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source_stmt: T_SOURCE prompt T_EOL
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{
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printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
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zconf_nextfile($2);
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free($2);
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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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/* 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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if (current_entry->help) {
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free(current_entry->help);
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zconfprint("warning: '%s' defined with more than one help text -- only the last one will be used",
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current_entry->sym->name ?: "<choice>");
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}
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/* Is the help text empty or all whitespace? */
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if ($2[strspn($2, " \f\n\r\t\v")] == '\0')
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zconfprint("warning: '%s' defined with blank help text",
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current_entry->sym->name ?: "<choice>");
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current_entry->help = $2;
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};
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/* depends option */
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depends_list:
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/* empty */
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| depends_list depends
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| depends_list T_EOL
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| depends_list option_error
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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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/* visibility option */
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visibility_list:
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/* empty */
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| visibility_list visible
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| visibility_list T_EOL
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;
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visible: T_VISIBLE if_expr
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{
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menu_add_visibility($2);
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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 T_EOL { $$ = $1; }
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| T_ENDCHOICE T_EOL { $$ = $1; }
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| T_ENDIF T_EOL { $$ = $1; }
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;
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nl:
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T_EOL
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| nl T_EOL
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;
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if_expr: /* empty */ { $$ = 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_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); }
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| symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); }
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| symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); }
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| symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); }
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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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/* For symbol definitions, selects, etc., where quotes are not accepted */
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nonconst_symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); };
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|
|
|
symbol: nonconst_symbol
|
|
| T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); }
|
|
;
|
|
|
|
word_opt: /* empty */ { $$ = NULL; }
|
|
| T_WORD
|
|
|
|
%%
|
|
|
|
void conf_parse(const char *name)
|
|
{
|
|
const char *tmp;
|
|
struct symbol *sym;
|
|
int i;
|
|
|
|
zconf_initscan(name);
|
|
|
|
sym_init();
|
|
_menu_init();
|
|
|
|
if (getenv("ZCONF_DEBUG"))
|
|
yydebug = 1;
|
|
yyparse();
|
|
if (yynerrs)
|
|
exit(1);
|
|
if (!modules_sym)
|
|
modules_sym = sym_find( "n" );
|
|
|
|
tmp = rootmenu.prompt->text;
|
|
rootmenu.prompt->text = _(rootmenu.prompt->text);
|
|
rootmenu.prompt->text = sym_expand_string_value(rootmenu.prompt->text);
|
|
free((char*)tmp);
|
|
|
|
menu_finalize(&rootmenu);
|
|
for_all_symbols(i, sym) {
|
|
if (sym_check_deps(sym))
|
|
yynerrs++;
|
|
}
|
|
if (yynerrs)
|
|
exit(1);
|
|
sym_set_change_count(1);
|
|
}
|
|
|
|
static const char *zconf_tokenname(int token)
|
|
{
|
|
switch (token) {
|
|
case T_MENU: return "menu";
|
|
case T_ENDMENU: return "endmenu";
|
|
case T_CHOICE: return "choice";
|
|
case T_ENDCHOICE: return "endchoice";
|
|
case T_IF: return "if";
|
|
case T_ENDIF: return "endif";
|
|
case T_DEPENDS: return "depends";
|
|
case T_VISIBLE: return "visible";
|
|
}
|
|
return "<token>";
|
|
}
|
|
|
|
static bool zconf_endtoken(const struct kconf_id *id, int starttoken, int endtoken)
|
|
{
|
|
if (id->token != endtoken) {
|
|
zconf_error("unexpected '%s' within %s block",
|
|
id->name, zconf_tokenname(starttoken));
|
|
yynerrs++;
|
|
return false;
|
|
}
|
|
if (current_menu->file != current_file) {
|
|
zconf_error("'%s' in different file than '%s'",
|
|
id->name, zconf_tokenname(starttoken));
|
|
fprintf(stderr, "%s:%d: location of the '%s'\n",
|
|
current_menu->file->name, current_menu->lineno,
|
|
zconf_tokenname(starttoken));
|
|
yynerrs++;
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void zconfprint(const char *err, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
|
|
va_start(ap, err);
|
|
vfprintf(stderr, err, ap);
|
|
va_end(ap);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
static void zconf_error(const char *err, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
yynerrs++;
|
|
fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
|
|
va_start(ap, err);
|
|
vfprintf(stderr, err, ap);
|
|
va_end(ap);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
static void yyerror(const char *err)
|
|
{
|
|
fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
|
|
}
|
|
|
|
static 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);
|
|
}
|
|
|
|
static void print_symbol(FILE *out, struct menu *menu)
|
|
{
|
|
struct symbol *sym = menu->sym;
|
|
struct property *prop;
|
|
|
|
if (sym_is_choice(sym))
|
|
fprintf(out, "\nchoice\n");
|
|
else
|
|
fprintf(out, "\nconfig %s\n", sym->name);
|
|
switch (sym->type) {
|
|
case S_BOOLEAN:
|
|
fputs(" bool\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;
|
|
case P_SELECT:
|
|
fputs( " select ", out);
|
|
expr_fprint(prop->expr, out);
|
|
fputc('\n', out);
|
|
break;
|
|
case P_IMPLY:
|
|
fputs( " imply ", out);
|
|
expr_fprint(prop->expr, out);
|
|
fputc('\n', out);
|
|
break;
|
|
case P_RANGE:
|
|
fputs( " range ", out);
|
|
expr_fprint(prop->expr, out);
|
|
fputc('\n', out);
|
|
break;
|
|
case P_MENU:
|
|
fputs( " menu ", out);
|
|
print_quoted_string(out, prop->text);
|
|
fputc('\n', out);
|
|
break;
|
|
default:
|
|
fprintf(out, " unknown prop %d!\n", prop->type);
|
|
break;
|
|
}
|
|
}
|
|
if (menu->help) {
|
|
int len = strlen(menu->help);
|
|
while (menu->help[--len] == '\n')
|
|
menu->help[len] = 0;
|
|
fprintf(out, " help\n%s\n", menu->help);
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
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 "zconf.lex.c"
|
|
#include "util.c"
|
|
#include "confdata.c"
|
|
#include "expr.c"
|
|
#include "symbol.c"
|
|
#include "menu.c"
|