expr.h 4.8 KB

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  1. /*
  2. * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
  3. * Released under the terms of the GNU GPL v2.0.
  4. */
  5. #ifndef EXPR_H
  6. #define EXPR_H
  7. #ifdef __cplusplus
  8. extern "C" {
  9. #endif
  10. #include <stdio.h>
  11. #ifndef __cplusplus
  12. #include <stdbool.h>
  13. #endif
  14. struct file {
  15. struct file *next;
  16. struct file *parent;
  17. char *name;
  18. int lineno;
  19. int flags;
  20. };
  21. #define FILE_BUSY 0x0001
  22. #define FILE_SCANNED 0x0002
  23. #define FILE_PRINTED 0x0004
  24. typedef enum tristate {
  25. no, mod, yes
  26. } tristate;
  27. enum expr_type {
  28. E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_CHOICE, E_SYMBOL, E_RANGE
  29. };
  30. union expr_data {
  31. struct expr *expr;
  32. struct symbol *sym;
  33. };
  34. struct expr {
  35. enum expr_type type;
  36. union expr_data left, right;
  37. };
  38. #define E_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2))
  39. #define E_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2))
  40. #define E_NOT(dep) (2-(dep))
  41. struct expr_value {
  42. struct expr *expr;
  43. tristate tri;
  44. };
  45. struct symbol_value {
  46. void *val;
  47. tristate tri;
  48. };
  49. enum symbol_type {
  50. S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
  51. };
  52. struct symbol {
  53. struct symbol *next;
  54. char *name;
  55. char *help;
  56. enum symbol_type type;
  57. struct symbol_value curr, user;
  58. tristate visible;
  59. int flags;
  60. struct property *prop;
  61. struct expr *dep, *dep2;
  62. struct expr_value rev_dep;
  63. };
  64. #define for_all_symbols(i, sym) for (i = 0; i < 257; i++) for (sym = symbol_hash[i]; sym; sym = sym->next) if (sym->type != S_OTHER)
  65. #define SYMBOL_YES 0x0001
  66. #define SYMBOL_MOD 0x0002
  67. #define SYMBOL_NO 0x0004
  68. #define SYMBOL_CONST 0x0007
  69. #define SYMBOL_CHECK 0x0008
  70. #define SYMBOL_CHOICE 0x0010
  71. #define SYMBOL_CHOICEVAL 0x0020
  72. #define SYMBOL_PRINTED 0x0040
  73. #define SYMBOL_VALID 0x0080
  74. #define SYMBOL_OPTIONAL 0x0100
  75. #define SYMBOL_WRITE 0x0200
  76. #define SYMBOL_CHANGED 0x0400
  77. #define SYMBOL_NEW 0x0800
  78. #define SYMBOL_AUTO 0x1000
  79. #define SYMBOL_CHECKED 0x2000
  80. #define SYMBOL_WARNED 0x8000
  81. #define SYMBOL_MAXLENGTH 256
  82. #define SYMBOL_HASHSIZE 257
  83. #define SYMBOL_HASHMASK 0xff
  84. enum prop_type {
  85. P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, P_SELECT, P_RANGE
  86. };
  87. struct property {
  88. struct property *next;
  89. struct symbol *sym;
  90. enum prop_type type;
  91. const char *text;
  92. struct expr_value visible;
  93. struct expr *expr;
  94. struct menu *menu;
  95. struct file *file;
  96. int lineno;
  97. };
  98. #define for_all_properties(sym, st, tok) \
  99. for (st = sym->prop; st; st = st->next) \
  100. if (st->type == (tok))
  101. #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
  102. #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
  103. #define for_all_prompts(sym, st) \
  104. for (st = sym->prop; st; st = st->next) \
  105. if (st->text)
  106. struct menu {
  107. struct menu *next;
  108. struct menu *parent;
  109. struct menu *list;
  110. struct symbol *sym;
  111. struct property *prompt;
  112. struct expr *dep;
  113. unsigned int flags;
  114. //char *help;
  115. struct file *file;
  116. int lineno;
  117. void *data;
  118. };
  119. #define MENU_CHANGED 0x0001
  120. #define MENU_ROOT 0x0002
  121. #ifndef SWIG
  122. extern struct file *file_list;
  123. extern struct file *current_file;
  124. struct file *lookup_file(const char *name);
  125. extern struct symbol symbol_yes, symbol_no, symbol_mod;
  126. extern struct symbol *modules_sym;
  127. extern int cdebug;
  128. struct expr *expr_alloc_symbol(struct symbol *sym);
  129. struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
  130. struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
  131. struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
  132. struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
  133. struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
  134. struct expr *expr_copy(struct expr *org);
  135. void expr_free(struct expr *e);
  136. int expr_eq(struct expr *e1, struct expr *e2);
  137. void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
  138. tristate expr_calc_value(struct expr *e);
  139. struct expr *expr_eliminate_yn(struct expr *e);
  140. struct expr *expr_trans_bool(struct expr *e);
  141. struct expr *expr_eliminate_dups(struct expr *e);
  142. struct expr *expr_transform(struct expr *e);
  143. int expr_contains_symbol(struct expr *dep, struct symbol *sym);
  144. bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
  145. struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
  146. struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
  147. void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
  148. struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
  149. void expr_fprint(struct expr *e, FILE *out);
  150. struct gstr; /* forward */
  151. void expr_gstr_print(struct expr *e, struct gstr *gs);
  152. static inline int expr_is_yes(struct expr *e)
  153. {
  154. return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
  155. }
  156. static inline int expr_is_no(struct expr *e)
  157. {
  158. return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
  159. }
  160. #endif
  161. #ifdef __cplusplus
  162. }
  163. #endif
  164. #endif /* EXPR_H */