rewrite to union type, much better

[ccc.git] / util.h

diff --git a/util.h b/util.h
index 57dd17b..d8b40ba 100644 (file)
--- a/util.h
+++ b/util.h
@@ -2,6 +2,16 @@
 #define UTIL_H
 
 #include <stdarg.h>
+#include <stdbool.h>
+
+struct list {
+       void *el;
+       struct list *tail;
+};
+struct list *list_cons(void *el, struct list *tail);
+void list_free(struct list *head, void (*freefun)(void *));
+void **list_to_array(struct list *list, int *num, bool reverse);
+int list_length(struct list *head);
 
 void die(const char *msg, ...);
 void pdie(const char *msg);