+#ifndef OBJECT_H
+#define OBJECT_H
+
+struct object_list {
+ struct object *item;
+ struct object_list *next;
+};
+
+struct object {
+ unsigned parsed : 1;
+ unsigned used : 1;
+ unsigned int flags;
+ unsigned char sha1[20];
+ const char *type;
+ struct object_list *refs;
+};
+
+int nr_objs;
+struct object **objs;
+
+struct object *lookup_object(unsigned char *sha1);
+
+void created_object(unsigned char *sha1, struct object *obj);
+
+void add_ref(struct object *refer, struct object *target);
+
+void mark_reachable(struct object *obj, unsigned int mask);
+
+#endif /* OBJECT_H */