#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;
- int prio;
-} 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;
- int prio;
-} element_t;
-
-#define ERROR_OP ((element_t *)(-1))
+#include "element.h"
+
+/* global variables */
+
+extern double answer;
/* parser function */
-element_t *parser (char *str, char **next);
+void delelement (element_t *root);
+
+element_t *parser (char *str, char **next, int prio);
void print_element (element_t *root, int level);
+double evaluate_element (element_t *root, char mask);
+
#endif /* __PARSER_H__ */
/* vim: set ts=4 sw=4 et: */