parser.h

   1 #ifndef __PARSER_H__
   2 #define __PARSER_H__
   3
   4 /* global variables */
   5
   6 extern double answer;
   7
   8 /* function type */
   9
  10 typedef enum {
  11     Val = 0, Sig,
  12     Add, Sub,
  13     Mul, Div, Mod,
  14     Pow, Sqr,
  15     Cos, Sin, Tan, Acos, Asin, Atan,
  16     Log, Exp,
  17     Abs, Ceil, Floor,
  18     Store, Recall, Inc, Dec, Disp,
  19     Quit, Help,
  20     Ans, E, Pi,
  21     Equal, Diff, Ge, Le, Gt, Lt,
  22     And, Or, Not,
  23     Cond, While, Prog, Print
  24 } func_t;
  25
  26 /* keyword type */
  27
  28 typedef struct _keyword_t {
  29     char *keyword;
  30     func_t func;
  31     int nbops;
  32     int offset;
  33     float prio;
  34 } keyword_t;
  35
  36 /* calculus element type */
  37
  38 typedef struct _element_t {
  39     func_t func;
  40     int nbops;
  41     struct _element_t **ops;
  42     double value;
  43     int prio;
  44     int hidden;
  45 } element_t;
  46
  47 #define ERROR_OP ((element_t *)(-1))
  48
  49 /* parser function */
  50
  51 void delelement (element_t *root);
  52
  53 element_t *parser (char *str, char **next, int prio);
  54
  55 void print_element (element_t *root, int level);
  56
  57 double evaluate_element (element_t *root, char mask);
  58
  59 /* completion functions */
  60
  61 char **generate_completion_list ();
  62
  63 void free_completion_list (char **list);
  64
  65 /* print function */
  66
  67 void set_format (char *prompt, int precision);
  68
  69 void free_format ();
  70
  71 double print (double value);
  72
  73 #endif /* __PARSER_H__ */
  74
  75 /* vim: set ts=4 sw=4 et: */