parser.h

   1 #ifndef __PARSER_H__
   2 #define __PARSER_H__
   3
   4 /* global variables */
   5
   6 extern double answer;
   7
   8 extern char format[9];
   9
  10 /* function type */
  11
  12 typedef enum {
  13     Val = 0, Sig,
  14     Add, Sub,
  15     Mul, Div, Mod,
  16     Pow, Sqr,
  17     Cos, Sin, Tan, Acos, Asin, Atan,
  18     Log, Exp,
  19     Abs, Ceil, Floor,
  20     Store, Recall, Inc, Dec, Disp,
  21     Quit, Help,
  22     Ans, E, Pi,
  23     Equal, Diff, Ge, Le, Gt, Lt,
  24     And, Or, Not,
  25     Cond, While, Prog, Print
  26 } func_t;
  27
  28 /* keyword type */
  29
  30 typedef struct _keyword_t {
  31     char *keyword;
  32     func_t func;
  33     int nbops;
  34     int offset;
  35     float prio;
  36 } keyword_t;
  37
  38 /* calculus element type */
  39
  40 typedef struct _element_t {
  41     func_t func;
  42     int nbops;
  43     struct _element_t **ops;
  44     double value;
  45     int prio;
  46 } element_t;
  47
  48 #define ERROR_OP ((element_t *)(-1))
  49
  50 /* parser function */
  51
  52 void delelement (element_t *root);
  53
  54 element_t *parser (char *str, char **next, int prio);
  55
  56 void print_element (element_t *root, int level);
  57
  58 double evaluate_element (element_t *root, char mask);
  59
  60 /* completion functions */
  61
  62 char **generate_completion_list ();
  63
  64 void free_completion_list (char **list);
  65
  66 #endif /* __PARSER_H__ */
  67
  68 /* vim: set ts=4 sw=4 et: */