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_define_hex,
  18     token_define_int,
  19     token_define_string,
  20     token_define_tristate,
  21     token_dep_bool,
  22     token_dep_mbool,
  23     token_dep_tristate,
  24     token_else,
  25     token_endmenu,
  26     token_fi,
  27     token_hex,
  28     token_if,
  29     token_int,
  30     token_mainmenu_name,
  31     token_mainmenu_option,
  32     token_source,
  33     token_string,
  34     token_then,
  35     token_tristate,
  36     token_unset,
  37 };
  38
  39 /*
  40  * Operator types for conditionals.
  41  */
  42
  43 enum operator
  44 {
  45     op_eq,
  46     op_neq,
  47     op_and,
  48     op_and1,
  49     op_or,
  50     op_bang,
  51     op_lparen,
  52     op_rparen,
  53     op_constant,
  54     op_variable,
  55     op_true,
  56     op_false,
  57     op_nuked
  58 };
  59
  60 /*
  61  * Conditions come in linked lists.
  62  * Some operators take strings:
  63  *
  64  *   op_constant   "foo"
  65  *   op_variable   "$ARCH", "$CONFIG_PMAC", "$CONFIG_EXPERIMENTAL"
  66  *
  67  * Most "$..." constructs refer to a variable which is defined somewhere
  68  * in the script.  Note that it is legal to test variables which are never
  69  * defined, such as variables that are meaningful only on other architectures.
  70  */
  71
  72 struct condition
  73 {
  74     struct condition *  next;
  75     enum operator       op;
  76     const char *        str;            /* op_constant */
  77     int                 nameindex;      /* op_variable */
  78 };
  79
  80 /*
  81  * Dependency list for dep_bool, dep_mbool, dep_tristate
  82  */
  83
  84 struct dependency
  85 {
  86     char *              name;
  87     struct dependency * next;
  88 };
  89
  90 /*
  91  * A statement from a config.in file
  92  */
  93
  94 struct kconfig
  95 {
  96     struct kconfig *    next;
  97     enum e_token        token;
  98     int                 nameindex;
  99     char *              label;
 100     char *              value;
 101     struct condition *  cond;
 102     struct dependency * depend;         /* token_dep_tristate */
 103     struct kconfig *    cfg_parent;     /* token_choice_item */
 104
 105     /* used only in tkgen.c */
 106     int                 menu_number;
 107     int                 menu_line;
 108     struct kconfig *    menu_next;
 109 };
 110
 111 struct variable
 112 {
 113     char *      name;
 114     char        defined;
 115     char        global_written;
 116 };
 117
 118 extern struct variable vartable[];
 119 extern int max_varnum;
 120
 121 /*
 122  * Prototypes
 123  */
 124
 125 extern void fix_conditionals ( struct kconfig * scfg );         /* tkcond.c */
 126 extern void dump_tk_script   ( struct kconfig * scfg );         /* tkgen.c  */
 127 extern int get_varnum        ( char * name );                   /* tkparse.c */