scripts/tkparse.h

   1 /*
   2  * tkparse.h
   3  */
   4
   5 /*
   6  * Token types (mostly statement types).
   7  */
   8
   9 enum e_token
  10 {
  11     token_UNKNOWN,
  12     token_bool,
  13     token_choice_header,
  14     token_choice_item,
  15     token_comment,
  16     token_define_bool,
  17     token_dep_tristate,
  18     token_else,
  19     token_endmenu,
  20     token_fi,
  21     token_hex,
  22     token_if,
  23     token_int,
  24     token_mainmenu_name,
  25     token_mainmenu_option,
  26     token_source,
  27     token_string,
  28     token_then,
  29     token_tristate,
  30     token_unset,
  31 };
  32
  33 /*
  34  * Operator types for conditionals.
  35  */
  36
  37 enum operator
  38 {
  39     op_eq,
  40     op_neq,
  41     op_and,
  42     op_and1,
  43     op_or,
  44     op_bang,
  45     op_lparen,
  46     op_rparen,
  47     op_constant,
  48     op_variable,
  49     op_kvariable,
  50     op_nuked
  51 };
  52
  53 /*
  54  * Conditions come in linked lists.
  55  * Some operators take strings:
  56  *
  57  *   op_constant   "foo"
  58  *   op_variable   "$ARCH", "$CONFIG_PMAC"
  59  *   op_kvariable  "$CONFIG_EXPERIMENTAL"
  60  *
  61  * Most "$..." constructs refer to a variable which is defined somewhere
  62  * in the script, so they become op_kvariable's instead.  Note that it
  63  * is legal to test variables which are never defined, such as variables
  64  * that are meaningful only on other architectures.
  65  */
  66
  67 struct condition
  68 {
  69     struct condition * next;
  70     enum operator op;
  71     const char * str;           /* op_constant, op_variable */
  72     struct kconfig * cfg;       /* op_kvariable */
  73 };
  74
  75 /*
  76  * A statement from a config.in file
  77  */
  78
  79 struct kconfig
  80 {
  81     struct kconfig *    next;
  82     enum e_token        token;
  83     char *              optionname;
  84     char *              label;
  85     char *              value;
  86     struct condition *  cond;
  87     char *              depend;         /* token_dep_tristate */
  88     struct kconfig *    cfg_parent;     /* token_choice_item */
  89
  90     /* used only in tkgen.c */
  91     char                global_written;
  92     int                 menu_number;
  93     int                 menu_line;
  94     struct kconfig *    menu_next;
  95 };
  96
  97
  98
  99 /*
 100  * Prototypes
 101  */
 102
 103 extern void fix_conditionals ( struct kconfig * scfg );         /* tkcond.c */
 104 extern void dump_tk_script   ( struct kconfig * scfg );         /* tkgen.c  */