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ref_iterator: keep track of whether the iterator output is ordered

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References are iterated over in order by refname, but reflogs are not.
Some consumers of reference iteration care about the difference. Teach
each `ref_iterator` to keep track of whether its output is ordered.

`overlay_ref_iterator` is one of the picky consumers. Add a sanity
check in `overlay_ref_iterator_begin()` to verify that its inputs are
ordered.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty
2017-09-13 19:15:55 +02:00
committed by Junio C Hamano
parent 5e00a6c873
commit 8738a8a4df
7 changed files with 46 additions and 19 deletions
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2
refs/ref-cache.c
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@@ -574,7 +574,7 @@ struct ref_iterator *cache_ref_iterator_begin(struct ref_cache *cache,
iter = xcalloc(1, sizeof(*iter));
ref_iterator = &iter->base;
base_ref_iterator_init(ref_iterator, &cache_ref_iterator_vtable);
base_ref_iterator_init(ref_iterator, &cache_ref_iterator_vtable, 1);
ALLOC_GROW(iter->levels, 10, iter->levels_alloc);
iter->levels_nr = 1;