reflog expire: refactor & use "tip_commit" only for UE_NORMAL

Add an intermediate variable for "tip_commit" in reflog_expiry_prepare(), and only add it to the struct if we're handling the UE_NORMAL case. The code behaves the same way as before, but this makes the control flow clearer, and the shorter name allows us to fold a 4-line i/else into a one-line ternary instead. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Ævar Arnfjörð Bjarmason committed Dec 22, 2021 at 05:06 UTC 07815e2d97aa177780ea0d67069b5abd0524f936
1 file changed +7 -7
builtin/reflog.c
+7 -7
@@ -354,16 +354,14 @@ static void reflog_expiry_prepare(const char *refname,
354 {
355 struct expire_reflog_policy_cb *cb = cb_data;
356 struct commit_list *elem;
357 + struct commit *commit = NULL;
358
359 if (!cb->cmd.expire_unreachable || is_head(refname)) {
360 cb->unreachable_expire_kind = UE_HEAD;
361 } else {
361 - cb->tip_commit = lookup_commit_reference_gently(the_repository,
362 - oid, 1);
363 - if (!cb->tip_commit)
364 - cb->unreachable_expire_kind = UE_ALWAYS;
365 - else
366 - cb->unreachable_expire_kind = UE_NORMAL;
362 + commit = lookup_commit_reference_gently(the_repository,
363 + oid, 1);
364 + cb->unreachable_expire_kind = commit ? UE_NORMAL : UE_ALWAYS;
365 }
366
367 if (cb->cmd.expire_unreachable <= cb->cmd.expire_total)
@@ -378,7 +376,9 @@ static void reflog_expiry_prepare(const char *refname,
376 commit_list_insert(elem->item, &cb->mark_list);
377 break;
378 case UE_NORMAL:
381 - commit_list_insert(cb->tip_commit, &cb->mark_list);
379 + commit_list_insert(commit, &cb->mark_list);
380 + /* For reflog_expiry_cleanup() below */
381 + cb->tip_commit = commit;
382 }
383 cb->mark_limit = cb->cmd.expire_total;
384 mark_reachable(cb);