diff options
Diffstat (limited to 'scripts/kconfig/zconf.y')
| -rw-r--r-- | scripts/kconfig/zconf.y | 173 |
1 files changed, 100 insertions, 73 deletions
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y index 1211781675b..1f61fba6aa2 100644 --- a/scripts/kconfig/zconf.y +++ b/scripts/kconfig/zconf.y @@ -25,21 +25,25 @@ int cdebug = PRINTD; extern int zconflex(void); static void zconfprint(const char *err, ...); +static void zconf_error(const char *err, ...); static void zconferror(const char *err); -static bool zconf_endtoken(int token, int starttoken, int endtoken); +static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken); struct symbol *symbol_hash[257]; static struct menu *current_menu, *current_entry; +#define YYDEBUG 0 +#if YYDEBUG #define YYERROR_VERBOSE +#endif %} -%expect 40 +%expect 26 %union { - int token; char *string; + struct file *file; struct symbol *symbol; struct expr *expr; struct menu *menu; @@ -74,7 +78,6 @@ static struct menu *current_menu, *current_entry; %token T_CLOSE_PAREN %token T_OPEN_PAREN %token T_EOL -%token T_EOF %left T_OR %left T_AND @@ -82,34 +85,54 @@ static struct menu *current_menu, *current_entry; %nonassoc T_NOT %type <string> prompt -%type <string> source %type <symbol> symbol %type <expr> expr %type <expr> if_expr -%type <token> end +%type <id> end +%type <id> option_name +%type <menu> if_entry menu_entry choice_entry + +%destructor { + fprintf(stderr, "%s:%d: missing end statement for this entry\n", + $$->file->name, $$->lineno); + if (current_menu == $$) + menu_end_menu(); +} if_entry menu_entry choice_entry %% -input: /* empty */ - | input block +input: stmt_list; + +stmt_list: + /* empty */ + | stmt_list common_stmt + | stmt_list choice_stmt + | stmt_list menu_stmt + | stmt_list T_MAINMENU prompt nl + | stmt_list end { zconf_error("unexpected end statement"); } + | stmt_list T_WORD error T_EOL { zconf_error("unknown statement \"%s\"", $2); } + | stmt_list option_name error T_EOL +{ + zconf_error("unexpected option \"%s\"", kconf_id_strings + $2->name); +} + | stmt_list error T_EOL { zconf_error("invalid statement"); } ; -block: common_block - | choice_stmt - | menu_stmt - | T_MAINMENU prompt nl_or_eof - | T_ENDMENU { zconfprint("unexpected 'endmenu' statement"); } - | T_ENDIF { zconfprint("unexpected 'endif' statement"); } - | T_ENDCHOICE { zconfprint("unexpected 'endchoice' statement"); } - | error nl_or_eof { zconfprint("syntax error"); yyerrok; } +option_name: + T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_OPTIONAL | T_RANGE | T_DEFAULT ; -common_block: - if_stmt +common_stmt: + T_EOL + | if_stmt | comment_stmt | config_stmt | menuconfig_stmt | source_stmt - | nl_or_eof +; + +option_error: + T_WORD error T_EOL { zconf_error("unknown option \"%s\"", $1); } + | error T_EOL { zconf_error("invalid option"); } ; @@ -152,6 +175,7 @@ config_option_list: | config_option_list config_option | config_option_list depends | config_option_list help + | config_option_list option_error | config_option_list T_EOL ; @@ -204,8 +228,7 @@ choice: T_CHOICE T_EOL choice_entry: choice choice_option_list { - menu_end_entry(); - menu_add_menu(); + $$ = menu_add_menu(); }; choice_end: end @@ -216,13 +239,8 @@ choice_end: end } }; -choice_stmt: - choice_entry choice_block choice_end - | choice_entry choice_block -{ - printf("%s:%d: missing 'endchoice' for this 'choice' statement\n", current_menu->file->name, current_menu->lineno); - zconfnerrs++; -}; +choice_stmt: choice_entry choice_block choice_end +; choice_option_list: /* empty */ @@ -230,6 +248,7 @@ choice_option_list: | choice_option_list depends | choice_option_list help | choice_option_list T_EOL + | choice_option_list option_error ; choice_option: T_PROMPT prompt if_expr T_EOL @@ -267,18 +286,17 @@ choice_option: T_DEFAULT T_WORD if_expr T_EOL choice_block: /* empty */ - | choice_block common_block + | choice_block common_stmt ; /* if entry */ -if: T_IF expr T_EOL +if_entry: T_IF expr nl { printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno()); menu_add_entry(NULL); menu_add_dep($2); - menu_end_entry(); - menu_add_menu(); + $$ = menu_add_menu(); }; if_end: end @@ -289,17 +307,12 @@ if_end: end } }; -if_stmt: - if if_block if_end - | if if_block -{ - printf("%s:%d: missing 'endif' for this 'if' statement\n", current_menu->file->name, current_menu->lineno); - zconfnerrs++; -}; +if_stmt: if_entry if_block if_end +; if_block: /* empty */ - | if_block common_block + | if_block common_stmt | if_block menu_stmt | if_block choice_stmt ; @@ -315,8 +328,7 @@ menu: T_MENU prompt T_EOL menu_entry: menu depends_list { - menu_end_entry(); - menu_add_menu(); + $$ = menu_add_menu(); }; menu_end: end @@ -327,31 +339,20 @@ menu_end: end } }; -menu_stmt: - menu_entry menu_block menu_end - | menu_entry menu_block -{ - printf("%s:%d: missing 'endmenu' for this 'menu' statement\n", current_menu->file->name, current_menu->lineno); - zconfnerrs++; -}; +menu_stmt: menu_entry menu_block menu_end +; menu_block: /* empty */ - | menu_block common_block + | menu_block common_stmt | menu_block menu_stmt | menu_block choice_stmt - | menu_block error T_EOL { zconfprint("invalid menu option"); yyerrok; } ; -source: T_SOURCE prompt T_EOL +source_stmt: T_SOURCE prompt T_EOL { - $$ = $2; printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2); -}; - -source_stmt: source -{ - zconf_nextfile($1); + zconf_nextfile($2); }; /* comment entry */ @@ -383,9 +384,11 @@ help: help_start T_HELPTEXT /* depends option */ -depends_list: /* empty */ - | depends_list depends - | depends_list T_EOL +depends_list: + /* empty */ + | depends_list depends + | depends_list T_EOL + | depends_list option_error ; depends: T_DEPENDS T_ON expr T_EOL @@ -417,13 +420,15 @@ prompt: T_WORD | T_WORD_QUOTE ; -end: T_ENDMENU nl_or_eof { $$ = T_ENDMENU; } - | T_ENDCHOICE nl_or_eof { $$ = T_ENDCHOICE; } - | T_ENDIF nl_or_eof { $$ = T_ENDIF; } +end: T_ENDMENU T_EOL { $$ = $1; } + | T_ENDCHOICE T_EOL { $$ = $1; } + | T_ENDIF T_EOL { $$ = $1; } ; -nl_or_eof: - T_EOL | T_EOF; +nl: + T_EOL + | nl T_EOL +; if_expr: /* empty */ { $$ = NULL; } | T_IF expr { $$ = $2; } @@ -456,7 +461,10 @@ void conf_parse(const char *name) modules_sym = sym_lookup("MODULES", 0); rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL); - //zconfdebug = 1; +#if YYDEBUG + if (getenv("ZCONF_DEBUG")) + zconfdebug = 1; +#endif zconfparse(); if (zconfnerrs) exit(1); @@ -477,20 +485,25 @@ const char *zconf_tokenname(int token) case T_ENDCHOICE: return "endchoice"; case T_IF: return "if"; case T_ENDIF: return "endif"; + case T_DEPENDS: return "depends"; } return "<token>"; } -static bool zconf_endtoken(int token, int starttoken, int endtoken) +static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken) { - if (token != endtoken) { - zconfprint("unexpected '%s' within %s block", zconf_tokenname(token), zconf_tokenname(starttoken)); + if (id->token != endtoken) { + zconf_error("unexpected '%s' within %s block", + kconf_id_strings + id->name, zconf_tokenname(starttoken)); zconfnerrs++; return false; } if (current_menu->file != current_file) { - zconfprint("'%s' in different file than '%s'", zconf_tokenname(token), zconf_tokenname(starttoken)); - zconfprint("location of the '%s'", zconf_tokenname(starttoken)); + zconf_error("'%s' in different file than '%s'", + kconf_id_strings + id->name, zconf_tokenname(starttoken)); + fprintf(stderr, "%s:%d: location of the '%s'\n", + current_menu->file->name, current_menu->lineno, + zconf_tokenname(starttoken)); zconfnerrs++; return false; } @@ -501,7 +514,19 @@ static void zconfprint(const char *err, ...) { va_list ap; - fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno() + 1); + 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; + + zconfnerrs++; + fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno()); va_start(ap, err); vfprintf(stderr, err, ap); va_end(ap); @@ -510,7 +535,9 @@ static void zconfprint(const char *err, ...) static void zconferror(const char *err) { +#if YYDEBUG fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err); +#endif } void print_quoted_string(FILE *out, const char *str) |