struct ccase;
struct pool;
union value;
+struct dataset ;
-struct expression *expr_parse (struct dictionary *, enum expr_type);
+struct expression *expr_parse (struct dataset *, enum expr_type);
struct expression *expr_parse_pool (struct pool *,
- struct dictionary *, enum expr_type);
+ struct dataset *,
+ enum expr_type);
void expr_free (struct expression *);
+struct dataset;
double expr_evaluate_num (struct expression *, const struct ccase *,
int case_idx);
void expr_evaluate_str (struct expression *, const struct ccase *,