Subversion Repositories test_project

%{
/*
 * 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>

#define LKC_DIRECT_LINK
#include "lkc.h"

#include "zconf.hash.c"

#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(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 26

%union
{
        char *string;
        struct file *file;
        struct symbol *symbol;
        struct expr *expr;
        struct menu *menu;
        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_RANGE
%token <id>T_OPTION
%token <id>T_ON
%token <string> T_WORD
%token <string> T_WORD_QUOTE
%token T_UNEQUAL
%token T_CLOSE_PAREN
%token T_OPEN_PAREN
%token T_EOL

%left T_OR
%left T_AND
%left T_EQUAL T_UNEQUAL
%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

%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: 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"); }
;

option_name:
        T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_OPTIONAL | T_RANGE | T_DEFAULT
;

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_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
{
        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 T_EOL
{
        struct symbol *sym = sym_lookup(NULL, 0);
        sym->flags |= SYMBOL_CHOICE;
        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
;

/* 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 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());
};

/* 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                                { $$ = expr_alloc_symbol($1); }
        | symbol T_EQUAL symbol                 { $$ = 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, 1); free($1); }
;

%%

void conf_parse(const char *name)
{
        struct symbol *sym;
        int i;

        zconf_initscan(name);

        sym_init();
        menu_init();
        modules_sym = sym_lookup(NULL, 0);
        modules_sym->type = S_BOOLEAN;
        modules_sym->flags |= SYMBOL_AUTO;
        rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL);

#if YYDEBUG
        if (getenv("ZCONF_DEBUG"))
                zconfdebug = 1;
#endif
        zconfparse();
        if (zconfnerrs)
                exit(1);
        if (!modules_sym->prop) {
                struct property *prop;

                prop = prop_alloc(P_DEFAULT, modules_sym);
                prop->expr = expr_alloc_symbol(sym_lookup("MODULES", 0));
        }
        menu_finalize(&rootmenu);
        for_all_symbols(i, sym) {
                if (sym_check_deps(sym))
                        zconfnerrs++;
        }
        if (zconfnerrs)
                exit(1);
        sym_set_change_count(1);
}

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";
        }
        return "<token>";
}

static bool zconf_endtoken(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)
{
#if YYDEBUG
        fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
#endif
}

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 (menu->help) {
                int len = strlen(menu->help);
                while (menu->help[--len] == '\n')
                        menu->help[len] = 0;
                fprintf(out, "  help\n%s\n", menu->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"