[calc.git] / parser.h

#ifndef __PARSER_H__
#define __PARSER_H__

/* function type */

typedef enum {
    Val = 0, Set,
    Add, Sub,
    Mul, Div, Pow,
    Sqr,
    Cos, Sin, Atn,
    Log, Exp
} func_t;

/* keyword type */

typedef struct _keyword_t {
    char *keyword;
    func_t func;
    int nbops;
    int offset;
} keyword_t;

/* calculus element type */

#define MAX_OPERANDS 10
typedef struct _element_t {
    func_t func;
    int nbops;
    struct _element_t *ops[MAX_OPERANDS];
    float value;
} element_t;

#define ERROR_OP ((element_t *)(-1))

/* parser function */

element_t *parser (char *str, char **next);

void print_element (element_t *root, int level);

#endif /* __PARSER_H__ */

/* vim: set ts=4 sw=4 et: */
Commit	Line	Data
bc97a989 LM	1	#ifndef __PARSER_H__
	2	#define __PARSER_H__
	3
	4	/* function type */
	5
	6	typedef enum {
0b489a77	7	Val = 0, Set,
bc97a989 LM	8	Add, Sub,
	9	Mul, Div, Pow,
	10	Sqr,
	11	Cos, Sin, Atn,
	12	Log, Exp
	13	} func_t;
	14
	15	/* keyword type */
	16
	17	typedef struct _keyword_t {
	18	char *keyword;
	19	func_t func;
	20	int nbops;
	21	int offset;
	22	} keyword_t;
	23
	24	/* calculus element type */
	25
0b489a77	26	#define MAX_OPERANDS 10
bc97a989 LM	27	typedef struct _element_t {
	28	func_t func;
	29	int nbops;
	30	struct _element_t *ops[MAX_OPERANDS];
	31	float value;
	32	} element_t;
	33
0b489a77 LM	34	#define ERROR_OP ((element_t *)(-1))
0b489a77 LM	35
bc97a989 LM	36	/* parser function */
bc97a989 LM	37
0b489a77	38	element_t parser (char str, char **next);
bc97a989 LM	39
	40	void print_element (element_t *root, int level);
	41
	42	#endif /* __PARSER_H__ */
	43
	44	/* vim: set ts=4 sw=4 et: */