+static void *lookup_object_by_type(struct repository *r,
+ const struct object_id *oid,
+ enum object_type type)
+{
+ switch (type) {
+ case OBJ_COMMIT:
+ return lookup_commit(r, oid);
+ case OBJ_TREE:
+ return lookup_tree(r, oid);
+ case OBJ_TAG:
+ return lookup_tag(r, oid);
+ case OBJ_BLOB:
+ return lookup_blob(r, oid);
+ default:
+ die("BUG: unknown object type %d", type);
+ }
+}
+
+static int mark_object_seen(const struct object_id *oid,
+ enum object_type type,
+ int exclude,
+ uint32_t name_hash,
+ struct packed_git *found_pack,
+ off_t found_offset)
+{
+ struct object *obj = lookup_object_by_type(the_repository, oid, type);
+ if (!obj)
+ die("unable to create object '%s'", oid_to_hex(oid));
+
+ obj->flags |= SEEN;
+ return 0;
+}
+