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bc97a989 LM |
1 | #ifndef __PARSER_H__ |
2 | #define __PARSER_H__ | |
3 | ||
4 | /* function type */ | |
5 | ||
6 | typedef enum { | |
89cf0955 | 7 | Val = 0, Sig, |
bc97a989 | 8 | Add, Sub, |
c47a9298 LM |
9 | Mul, Div, Mod, |
10 | Pow, Sqr, | |
bc97a989 | 11 | Cos, Sin, Atn, |
3b4b0bbe | 12 | Log, Exp, |
89cf0955 | 13 | Qui, Hel |
bc97a989 LM |
14 | } func_t; |
15 | ||
16 | /* keyword type */ | |
17 | ||
18 | typedef struct _keyword_t { | |
19 | char *keyword; | |
20 | func_t func; | |
21 | int nbops; | |
22 | int offset; | |
11cda8d7 | 23 | int prio; |
bc97a989 LM |
24 | } keyword_t; |
25 | ||
26 | /* calculus element type */ | |
27 | ||
0b489a77 | 28 | #define MAX_OPERANDS 10 |
bc97a989 LM |
29 | typedef struct _element_t { |
30 | func_t func; | |
31 | int nbops; | |
32 | struct _element_t *ops[MAX_OPERANDS]; | |
fd88e359 | 33 | double value; |
11cda8d7 | 34 | int prio; |
bc97a989 LM |
35 | } element_t; |
36 | ||
0b489a77 LM |
37 | #define ERROR_OP ((element_t *)(-1)) |
38 | ||
bc97a989 LM |
39 | /* parser function */ |
40 | ||
031d7bba LM |
41 | void delelement (element_t *root); |
42 | ||
ef37d966 | 43 | element_t *parser (char *str, char **next, int prio); |
bc97a989 LM |
44 | |
45 | void print_element (element_t *root, int level); | |
46 | ||
3b4b0bbe | 47 | double evaluate_element (element_t *root, char mask); |
f2927108 | 48 | |
bc97a989 LM |
49 | #endif /* __PARSER_H__ */ |
50 | ||
51 | /* vim: set ts=4 sw=4 et: */ |