Clean up how transformations work.

[pspp] / src / language / stats / rank.c

diff --git a/src/language/stats/rank.c b/src/language/stats/rank.c
index ecf9a65914bd6403ceb3defd673463b3dd647cff..7e76d68abac4d74b8b858b83254966976c9af550 100644 (file)
--- a/src/language/stats/rank.c
+++ b/src/language/stats/rank.c
@@ -912,7 +912,7 @@ advance_ranking (struct rank_trns_input_var *iv)
   iv->current = casereader_read (iv->input);
 }
 
-static int
+static enum trns_result
 rank_trns_proc (void *trns_, struct ccase **c, casenumber case_idx UNUSED)
 {
   struct rank_trns *trns = trns_;
@@ -961,6 +961,12 @@ rank_trns_free (void *trns_)
   return true;
 }
 
+static const struct trns_class rank_trns_class = {
+  .name = "RANK",
+  .execute = rank_trns_proc,
+  .destroy = rank_trns_free,
+};
+
 static bool
 rank_cmd (struct dataset *ds, const struct rank *cmd)
 {
@@ -1116,7 +1122,7 @@ rank_cmd (struct dataset *ds, const struct rank *cmd)
     }
   free (outputs);
 
-  add_transformation (ds, rank_trns_proc, rank_trns_free, trns);
+  add_transformation (ds, &rank_trns_class, trns);
 
   /* Delete our sort key, which we don't need anymore. */
   dict_delete_var (d, order_var);