name-rev: rewrite create_or_update_name()

Martin Ågren · gitster · commit 3e2feb0d64c9 · 2020-02-05T10:23:42.000-08:00
This code was moved straight out of name_rev(). As such, we inherited
the "goto" to jump from an if into an else-if. We also inherited the
fact that "nothing to do -- return NULL" is handled last.

Rewrite the function to first handle the "nothing to do" case. Then we
can handle the conditional allocation early before going on to populate
the struct. No need for goto-ing.

Signed-off-by: Martin Ågren &lt;martin.agren@gmail.com&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/builtin/name-rev.c b/builtin/name-rev.c
@@ -88,21 +88,21 @@ static struct rev_name *create_or_update_name(struct commit *commit,
 {
 	struct rev_name *name = get_commit_rev_name(commit);
 
+	if (name && !is_better_name(name, taggerdate, distance, from_tag))
+		return NULL;
+
 	if (name == NULL) {
 		name = xmalloc(sizeof(*name));
 		set_commit_rev_name(commit, name);
-		goto copy_data;
-	} else if (is_better_name(name, taggerdate, distance, from_tag)) {
-copy_data:
-		name->tip_name = tip_name;
-		name->taggerdate = taggerdate;
-		name->generation = generation;
-		name->distance = distance;
-		name->from_tag = from_tag;
-
-		return name;
-	} else
-		return NULL;
+	}
+
+	name->tip_name = tip_name;
+	name->taggerdate = taggerdate;
+	name->generation = generation;
+	name->distance = distance;
+	name->from_tag = from_tag;
+
+	return name;
 }
 
 static void name_rev(struct commit *start_commit,
