scripts/tkparse.h

   1 /*
   2  * tkparse.h
   3  */
   4
   5 /*
   6  * Define this symbol to generate exactly the same output, byte for byte,
   7  * as the previous version of xconfig.  I need to do this to make sure I
   8  * I don't break anything in my moby edit. -- mec
   9  */
  10
  11 #define BUG_COMPATIBLE
  12
  13 /*
  14  * Token types (mostly statement types).
  15  */
  16
  17 enum e_token
  18 {
  19     token_UNKNOWN,
  20     token_bool,
  21     token_choice_header,
  22     token_choice_item,
  23     token_comment,
  24     token_define_bool,
  25     token_dep_tristate,
  26     token_else,
  27     token_endmenu,
  28     token_fi,
  29     token_hex,
  30     token_if,
  31     token_int,
  32     token_mainmenu_name,
  33     token_mainmenu_option,
  34     token_source,
  35     token_string,
  36     token_then,
  37     token_tristate,
  38     token_unset,
  39 };
  40
  41 /*
  42  * Operator types for conditionals.
  43  */
  44
  45 enum operator
  46 {
  47     op_eq,
  48     op_neq,
  49     op_and,
  50     op_and1,
  51     op_or,
  52     op_bang,
  53     op_lparen,
  54     op_rparen,
  55     op_constant,
  56     op_variable,
  57     op_kvariable,
  58     op_nuked
  59 };
  60
  61 /*
  62  * Conditions come in linked lists.
  63  * Some operators take strings:
  64  *
  65  *   op_constant   "foo"
  66  *   op_variable   "$ARCH", "$CONFIG_PMAC"
  67  *   op_kvariable  "$CONFIG_EXPERIMENTAL"
  68  *
  69  * Most "$..." constructs refer to a variable which is defined somewhere
  70  * in the script, so they become op_kvariable's instead.  Note that it
  71  * is legal to test variables which are never defined, such as variables
  72  * that are meaningful only on other architectures.
  73  */
  74
  75 struct condition
  76 {
  77     struct condition * next;
  78     enum operator op;
  79     const char * str;           /* op_constant, op_variable */
  80     struct kconfig * cfg;       /* op_kvariable */
  81 };
  82
  83 /*
  84  * A statement from a config.in file
  85  */
  86
  87 struct kconfig
  88 {
  89     struct kconfig *    next;
  90     enum e_token        token;
  91     char *              optionname;
  92     char *              label;
  93     char *              value;
  94     struct condition *  cond;
  95     char *              depend;         /* token_dep_tristate */
  96     struct kconfig *    cfg_parent;     /* token_choice_item */
  97
  98     /* used only in tkgen.c */
  99     char                global_written;
 100     int                 menu_number;
 101     int                 menu_line;
 102     struct kconfig *    menu_next;
 103 };
 104
 105
 106
 107 /*
 108  * Prototypes
 109  */
 110
 111 extern void fix_conditionals ( struct kconfig * scfg );         /* tkcond.c */
 112 extern void dump_tk_script   ( struct kconfig * scfg );         /* tkgen.c  */