khash: rename kh_oid_t to kh_oid_set

khash lets us define a hash as either a map or a set (i.e., with no "value" type). For the oid maps we define, "oid" is the set and "oid_map" is the map. As the bug in the previous commit shows, it's easy to pick the wrong one. So let's make the names more distinct: "oid_set" and "oid_map". An alternative naming scheme would be to actually name the type after the key/value types. So e.g., "oid" _would_ be the set, since it has no value type. And "oid_map" would become "oid_void" or similar (and "oid_pos" becomes "oid_int"). That's better in some ways: it's more regular, and a given map type can be more reasily reused in multiple contexts (e.g., something storing an "int" that isn't a "pos"). But it's also slightly less descriptive. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Jeff King committed Jun 20, 2019 at 03:41 UTC 8fbb558af4e911a9507295809a4d1d7d6687b6e1
3 files changed +9 -9
khash.h
+1 -1
@@ -342,7 +342,7 @@ static inline int oid_equal(struct object_id a, struct object_id b)
342 return oideq(&a, &b);
343 }
344
345 -KHASH_INIT(oid, struct object_id, int, 0, oid_hash, oid_equal)
345 +KHASH_INIT(oid_set, struct object_id, int, 0, oid_hash, oid_equal)
346
347 KHASH_INIT(oid_map, struct object_id, void *, 1, oid_hash, oid_equal)
348
oidset.c
+6 -6
@@ -5,33 +5,33 @@ void oidset_init(struct oidset *set, size_t initial_size)
5 {
6 memset(&set->set, 0, sizeof(set->set));
7 if (initial_size)
8 - kh_resize_oid(&set->set, initial_size);
8 + kh_resize_oid_set(&set->set, initial_size);
9 }
10
11 int oidset_contains(const struct oidset *set, const struct object_id *oid)
12 {
13 - khiter_t pos = kh_get_oid(&set->set, *oid);
13 + khiter_t pos = kh_get_oid_set(&set->set, *oid);
14 return pos != kh_end(&set->set);
15 }
16
17 int oidset_insert(struct oidset *set, const struct object_id *oid)
18 {
19 int added;
20 - kh_put_oid(&set->set, *oid, &added);
20 + kh_put_oid_set(&set->set, *oid, &added);
21 return !added;
22 }
23
24 int oidset_remove(struct oidset *set, const struct object_id *oid)
25 {
26 - khiter_t pos = kh_get_oid(&set->set, *oid);
26 + khiter_t pos = kh_get_oid_set(&set->set, *oid);
27 if (pos == kh_end(&set->set))
28 return 0;
29 - kh_del_oid(&set->set, pos);
29 + kh_del_oid_set(&set->set, pos);
30 return 1;
31 }
32
33 void oidset_clear(struct oidset *set)
34 {
35 - kh_release_oid(&set->set);
35 + kh_release_oid_set(&set->set);
36 oidset_init(set, 0);
37 }
oidset.h
+2 -2
@@ -20,7 +20,7 @@
20 * A single oidset; should be zero-initialized (or use OIDSET_INIT).
21 */
22 struct oidset {
23 - kh_oid_t set;
23 + kh_oid_set_t set;
24 };
25
26 #define OIDSET_INIT { { 0 } }
@@ -62,7 +62,7 @@ int oidset_remove(struct oidset *set, const struct object_id *oid);
62 void oidset_clear(struct oidset *set);
63
64 struct oidset_iter {
65 - kh_oid_t *set;
65 + kh_oid_set_t *set;
66 khiter_t iter;
67 };
68