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     Ln, Log, Exp,
  17     Erfc, Erf,
  18     Abs, Ceil, Floor,
  19     Store, Recall, Inc, Dec, Disp, Mem, Clear,
  20     Quit, Help,
  21     Ans, E, Pi,
  22     Equal, Diff, Ge, Le, Gt, Lt,
  23     And, Or, Not,
  24     Cond, While, Code, Print,
  25     Prog, Call, List, Edit, Del
  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     int hidden;
  47     char *string;
  48 } element_t;
  49
  50 #define ERROR_OP ((element_t *)(-1))
  51
  52 /* workspace type */
  53
  54 typedef struct _workspace_t {
  55     int id;
  56     double answer;
  57     double *storage;
  58     int storage_size;
  59     element_t *root;
  60     char *string;
  61 } workspace_t;
  62
  63 /* parser function */
  64
  65 void delelement (element_t *root);
  66
  67 element_t *parser (char *str, char **next, int prio);
  68
  69 void print_element (element_t *root, int level);
  70
  71 double evaluate_element (element_t *root, char mask);
  72
  73 /* completion functions */
  74
  75 char **generate_completion_list ();
  76
  77 void free_completion_list (char **list);
  78
  79 /* print function */
  80
  81 void set_format (char *prompt, int precision);
  82
  83 void free_format ();
  84
  85 double print (double value);
  86
  87 #endif /* __PARSER_H__ */
  88
  89 /* vim: set ts=4 sw=4 et: */