expr.h 4.9 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. typedef enum tristate {
  24. no, mod, yes
  25. } tristate;
  26. enum expr_type {
  27. E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_LIST, E_SYMBOL, E_RANGE
  28. };
  29. union expr_data {
  30. struct expr *expr;
  31. struct symbol *sym;
  32. };
  33. struct expr {
  34. enum expr_type type;
  35. union expr_data left, right;
  36. };
  37. #define EXPR_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2))
  38. #define EXPR_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2))
  39. #define EXPR_NOT(dep) (2-(dep))
  40. #define expr_list_for_each_sym(l, e, s) \
  41. for (e = (l); e && (s = e->right.sym); e = e->left.expr)
  42. struct expr_value {
  43. struct expr *expr;
  44. tristate tri;
  45. };
  46. struct symbol_value {
  47. void *val;
  48. tristate tri;
  49. };
  50. enum symbol_type {
  51. S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
  52. };
  53. enum {
  54. S_DEF_USER, /* main user value */
  55. S_DEF_AUTO,
  56. };
  57. struct symbol {
  58. struct symbol *next;
  59. char *name;
  60. enum symbol_type type;
  61. struct symbol_value curr;
  62. struct symbol_value def[4];
  63. tristate visible;
  64. int flags;
  65. struct property *prop;
  66. struct expr_value rev_dep;
  67. };
  68. #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)
  69. #define SYMBOL_CONST 0x0001
  70. #define SYMBOL_CHECK 0x0008
  71. #define SYMBOL_CHOICE 0x0010
  72. #define SYMBOL_CHOICEVAL 0x0020
  73. #define SYMBOL_VALID 0x0080
  74. #define SYMBOL_OPTIONAL 0x0100
  75. #define SYMBOL_WRITE 0x0200
  76. #define SYMBOL_CHANGED 0x0400
  77. #define SYMBOL_AUTO 0x1000
  78. #define SYMBOL_CHECKED 0x2000
  79. #define SYMBOL_WARNED 0x8000
  80. #define SYMBOL_DEF 0x10000
  81. #define SYMBOL_DEF_USER 0x10000
  82. #define SYMBOL_DEF_AUTO 0x20000
  83. #define SYMBOL_DEF3 0x40000
  84. #define SYMBOL_DEF4 0x80000
  85. #define SYMBOL_MAXLENGTH 256
  86. #define SYMBOL_HASHSIZE 257
  87. #define SYMBOL_HASHMASK 0xff
  88. enum prop_type {
  89. P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE,
  90. P_SELECT, P_RANGE, P_ENV
  91. };
  92. struct property {
  93. struct property *next;
  94. struct symbol *sym;
  95. enum prop_type type;
  96. const char *text;
  97. struct expr_value visible;
  98. struct expr *expr;
  99. struct menu *menu;
  100. struct file *file;
  101. int lineno;
  102. };
  103. #define for_all_properties(sym, st, tok) \
  104. for (st = sym->prop; st; st = st->next) \
  105. if (st->type == (tok))
  106. #define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
  107. #define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
  108. #define for_all_prompts(sym, st) \
  109. for (st = sym->prop; st; st = st->next) \
  110. if (st->text)
  111. struct menu {
  112. struct menu *next;
  113. struct menu *parent;
  114. struct menu *list;
  115. struct symbol *sym;
  116. struct property *prompt;
  117. struct expr *dep;
  118. unsigned int flags;
  119. char *help;
  120. struct file *file;
  121. int lineno;
  122. void *data;
  123. };
  124. #define MENU_CHANGED 0x0001
  125. #define MENU_ROOT 0x0002
  126. #ifndef SWIG
  127. extern struct file *file_list;
  128. extern struct file *current_file;
  129. struct file *lookup_file(const char *name);
  130. extern struct symbol symbol_yes, symbol_no, symbol_mod;
  131. extern struct symbol *modules_sym;
  132. extern struct symbol *sym_defconfig_list;
  133. extern int cdebug;
  134. struct expr *expr_alloc_symbol(struct symbol *sym);
  135. struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
  136. struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
  137. struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
  138. struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
  139. struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
  140. struct expr *expr_copy(struct expr *org);
  141. void expr_free(struct expr *e);
  142. int expr_eq(struct expr *e1, struct expr *e2);
  143. void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
  144. tristate expr_calc_value(struct expr *e);
  145. struct expr *expr_eliminate_yn(struct expr *e);
  146. struct expr *expr_trans_bool(struct expr *e);
  147. struct expr *expr_eliminate_dups(struct expr *e);
  148. struct expr *expr_transform(struct expr *e);
  149. int expr_contains_symbol(struct expr *dep, struct symbol *sym);
  150. bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
  151. struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
  152. struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
  153. void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
  154. struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
  155. void expr_fprint(struct expr *e, FILE *out);
  156. struct gstr; /* forward */
  157. void expr_gstr_print(struct expr *e, struct gstr *gs);
  158. static inline int expr_is_yes(struct expr *e)
  159. {
  160. return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
  161. }
  162. static inline int expr_is_no(struct expr *e)
  163. {
  164. return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
  165. }
  166. #endif
  167. #ifdef __cplusplus
  168. }
  169. #endif
  170. #endif /* EXPR_H */