Edit File: zconf.y
%{ /* * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> * Released under the terms of the GNU GPL v2.0. */ #include <ctype.h> #include <stdarg.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdbool.h> #include "lkc.h" #define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt) #define PRINTD 0x0001 #define DEBUG_PARSE 0x0002 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(const struct kconf_id *id, int starttoken, int endtoken); struct symbol *symbol_hash[SYMBOL_HASHSIZE]; static struct menu *current_menu, *current_entry; %} %expect 32 %union { char *string; struct file *file; struct symbol *symbol; struct expr *expr; struct menu *menu; const struct kconf_id *id; } %token <id>T_MAINMENU %token <id>T_MENU %token <id>T_ENDMENU %token <id>T_SOURCE %token <id>T_CHOICE %token <id>T_ENDCHOICE %token <id>T_COMMENT %token <id>T_CONFIG %token <id>T_MENUCONFIG %token <id>T_HELP %token <string> T_HELPTEXT %token <id>T_IF %token <id>T_ENDIF %token <id>T_DEPENDS %token <id>T_OPTIONAL %token <id>T_PROMPT %token <id>T_TYPE %token <id>T_DEFAULT %token <id>T_SELECT %token <id>T_IMPLY %token <id>T_RANGE %token <id>T_VISIBLE %token <id>T_OPTION %token <id>T_ON %token <string> T_WORD %token <string> T_WORD_QUOTE %token T_UNEQUAL %token T_LESS %token T_LESS_EQUAL %token T_GREATER %token T_GREATER_EQUAL %token T_CLOSE_PAREN %token T_OPEN_PAREN %token T_EOL %left T_OR %left T_AND %left T_EQUAL T_UNEQUAL %left T_LESS T_LESS_EQUAL T_GREATER T_GREATER_EQUAL %nonassoc T_NOT %type <string> prompt %type <symbol> symbol %type <expr> expr %type <expr> if_expr %type <id> end %type <id> option_name %type <menu> if_entry menu_entry choice_entry %type <string> symbol_option_arg word_opt %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 %{ /* Include zconf.hash.c here so it can see the token constants. */ #include "zconf.hash.c" %} %% input: nl start | start; start: mainmenu_stmt stmt_list | stmt_list; stmt_list: /* empty */ | stmt_list common_stmt | stmt_list choice_stmt | stmt_list menu_stmt | 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"); } ; option_name: T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_IMPLY | T_OPTIONAL | T_RANGE | T_DEFAULT | T_VISIBLE ; common_stmt: T_EOL | if_stmt | comment_stmt | config_stmt | menuconfig_stmt | source_stmt ; option_error: T_WORD error T_EOL { zconf_error("unknown option \"%s\"", $1); } | error T_EOL { zconf_error("invalid option"); } ; /* config/menuconfig entry */ config_entry_start: T_CONFIG T_WORD T_EOL { struct symbol *sym = sym_lookup($2, 0); sym->flags |= SYMBOL_OPTIONAL; menu_add_entry(sym); printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2); }; config_stmt: config_entry_start config_option_list { menu_end_entry(); printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno()); }; menuconfig_entry_start: T_MENUCONFIG T_WORD T_EOL { struct symbol *sym = sym_lookup($2, 0); sym->flags |= SYMBOL_OPTIONAL; menu_add_entry(sym); printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2); }; menuconfig_stmt: menuconfig_entry_start config_option_list { if (current_entry->prompt) current_entry->prompt->type = P_MENU; else zconfprint("warning: menuconfig statement without prompt"); menu_end_entry(); printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno()); }; config_option_list: /* empty */ | config_option_list config_option | config_option_list symbol_option | config_option_list depends | config_option_list help | config_option_list option_error | config_option_list T_EOL ; config_option: T_TYPE prompt_stmt_opt T_EOL { menu_set_type($1->stype); printd(DEBUG_PARSE, "%s:%d:type(%u)\n", zconf_curname(), zconf_lineno(), $1->stype); }; config_option: T_PROMPT prompt if_expr T_EOL { menu_add_prompt(P_PROMPT, $2, $3); printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno()); }; config_option: T_DEFAULT expr if_expr T_EOL { menu_add_expr(P_DEFAULT, $2, $3); if ($1->stype != S_UNKNOWN) menu_set_type($1->stype); printd(DEBUG_PARSE, "%s:%d:default(%u)\n", zconf_curname(), zconf_lineno(), $1->stype); }; config_option: T_SELECT T_WORD if_expr T_EOL { menu_add_symbol(P_SELECT, sym_lookup($2, 0), $3); printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno()); }; config_option: T_IMPLY T_WORD if_expr T_EOL { menu_add_symbol(P_IMPLY, sym_lookup($2, 0), $3); printd(DEBUG_PARSE, "%s:%d:imply\n", zconf_curname(), zconf_lineno()); }; config_option: T_RANGE symbol symbol if_expr T_EOL { menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4); printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno()); }; symbol_option: T_OPTION symbol_option_list T_EOL ; symbol_option_list: /* empty */ | symbol_option_list T_WORD symbol_option_arg { const struct kconf_id *id = kconf_id_lookup($2, strlen($2)); if (id && id->flags & TF_OPTION) menu_add_option(id->token, $3); else zconfprint("warning: ignoring unknown option %s", $2); free($2); }; symbol_option_arg: /* empty */ { $$ = NULL; } | T_EQUAL prompt { $$ = $2; } ; /* choice entry */ choice: T_CHOICE word_opt T_EOL { struct symbol *sym = sym_lookup($2, SYMBOL_CHOICE); sym->flags |= SYMBOL_AUTO; menu_add_entry(sym); menu_add_expr(P_CHOICE, NULL, NULL); printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno()); }; choice_entry: choice choice_option_list { $$ = menu_add_menu(); }; choice_end: end { if (zconf_endtoken($1, T_CHOICE, T_ENDCHOICE)) { menu_end_menu(); printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno()); } }; choice_stmt: choice_entry choice_block choice_end ; choice_option_list: /* empty */ | choice_option_list choice_option | 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 { menu_add_prompt(P_PROMPT, $2, $3); printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno()); }; choice_option: T_TYPE prompt_stmt_opt T_EOL { if ($1->stype == S_BOOLEAN || $1->stype == S_TRISTATE) { menu_set_type($1->stype); printd(DEBUG_PARSE, "%s:%d:type(%u)\n", zconf_curname(), zconf_lineno(), $1->stype); } else YYERROR; }; choice_option: T_OPTIONAL T_EOL { current_entry->sym->flags |= SYMBOL_OPTIONAL; printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno()); }; choice_option: T_DEFAULT T_WORD if_expr T_EOL { if ($1->stype == S_UNKNOWN) { menu_add_symbol(P_DEFAULT, sym_lookup($2, 0), $3); printd(DEBUG_PARSE, "%s:%d:default\n", zconf_curname(), zconf_lineno()); } else YYERROR; }; choice_block: /* empty */ | choice_block common_stmt ; /* if entry */ 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); $$ = menu_add_menu(); }; if_end: end { if (zconf_endtoken($1, T_IF, T_ENDIF)) { menu_end_menu(); printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno()); } }; if_stmt: if_entry if_block if_end ; if_block: /* empty */ | if_block common_stmt | if_block menu_stmt | if_block choice_stmt ; /* mainmenu entry */ mainmenu_stmt: T_MAINMENU prompt nl { menu_add_prompt(P_MENU, $2, NULL); }; /* menu entry */ menu: T_MENU prompt T_EOL { menu_add_entry(NULL); menu_add_prompt(P_MENU, $2, NULL); printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno()); }; menu_entry: menu visibility_list depends_list { $$ = menu_add_menu(); }; menu_end: end { if (zconf_endtoken($1, T_MENU, T_ENDMENU)) { menu_end_menu(); printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno()); } }; menu_stmt: menu_entry menu_block menu_end ; menu_block: /* empty */ | menu_block common_stmt | menu_block menu_stmt | menu_block choice_stmt ; source_stmt: T_SOURCE prompt T_EOL { printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2); zconf_nextfile($2); }; /* comment entry */ comment: T_COMMENT prompt T_EOL { menu_add_entry(NULL); menu_add_prompt(P_COMMENT, $2, NULL); printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno()); }; comment_stmt: comment depends_list { menu_end_entry(); }; /* help option */ help_start: T_HELP T_EOL { printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno()); zconf_starthelp(); }; help: help_start T_HELPTEXT { current_entry->help = $2; }; /* depends option */ depends_list: /* empty */ | depends_list depends | depends_list T_EOL | depends_list option_error ; depends: T_DEPENDS T_ON expr T_EOL { menu_add_dep($3); printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno()); }; /* visibility option */ visibility_list: /* empty */ | visibility_list visible | visibility_list T_EOL ; visible: T_VISIBLE if_expr { menu_add_visibility($2); }; /* prompt statement */ prompt_stmt_opt: /* empty */ | prompt if_expr { menu_add_prompt(P_PROMPT, $1, $2); }; prompt: T_WORD | T_WORD_QUOTE ; end: T_ENDMENU T_EOL { $$ = $1; } | T_ENDCHOICE T_EOL { $$ = $1; } | T_ENDIF T_EOL { $$ = $1; } ; nl: T_EOL | nl T_EOL ; if_expr: /* empty */ { $$ = NULL; } | T_IF expr { $$ = $2; } ; expr: symbol { $$ = expr_alloc_symbol($1); } | symbol T_LESS symbol { $$ = expr_alloc_comp(E_LTH, $1, $3); } | symbol T_LESS_EQUAL symbol { $$ = expr_alloc_comp(E_LEQ, $1, $3); } | symbol T_GREATER symbol { $$ = expr_alloc_comp(E_GTH, $1, $3); } | symbol T_GREATER_EQUAL symbol { $$ = expr_alloc_comp(E_GEQ, $1, $3); } | symbol T_EQUAL symbol { $$ = expr_alloc_comp(E_EQUAL, $1, $3); } | symbol T_UNEQUAL symbol { $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); } | T_OPEN_PAREN expr T_CLOSE_PAREN { $$ = $2; } | T_NOT expr { $$ = expr_alloc_one(E_NOT, $2); } | expr T_OR expr { $$ = expr_alloc_two(E_OR, $1, $3); } | expr T_AND expr { $$ = expr_alloc_two(E_AND, $1, $3); } ; symbol: T_WORD { $$ = sym_lookup($1, 0); free($1); } | T_WORD_QUOTE { $$ = sym_lookup($1, SYMBOL_CONST); free($1); } ; word_opt: /* empty */ { $$ = NULL; } | T_WORD %% void conf_parse(const char *name) { struct symbol *sym; int i; zconf_initscan(name); sym_init(); _menu_init(); rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL); if (getenv("ZCONF_DEBUG")) zconfdebug = 1; zconfparse(); if (zconfnerrs) exit(1); if (!modules_sym) modules_sym = sym_find( "n" ); rootmenu.prompt->text = _(rootmenu.prompt->text); rootmenu.prompt->text = sym_expand_string_value(rootmenu.prompt->text); menu_finalize(&rootmenu); for_all_symbols(i, sym) { if (sym_check_deps(sym)) zconfnerrs++; } if (zconfnerrs) 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", kconf_id_strings + id->name, zconf_tokenname(starttoken)); zconfnerrs++; return false; } if (current_menu->file != current_file) { 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; } 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; zconfnerrs++; fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno()); 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); } 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(" 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; 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"