src/basic/ordered-set.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2015 Lennart Poettering
   8 ***/
   9
  10 #include "hashmap.h"
  11
  12 typedef struct OrderedSet OrderedSet;
  13
  14 static inline OrderedSet* ordered_set_new(const struct hash_ops *ops) {
  15         return (OrderedSet*) ordered_hashmap_new(ops);
  16 }
  17
  18 static inline int ordered_set_ensure_allocated(OrderedSet **s, const struct hash_ops *ops) {
  19         if (*s)
  20                 return 0;
  21
  22         *s = ordered_set_new(ops);
  23         if (!*s)
  24                 return -ENOMEM;
  25
  26         return 0;
  27 }
  28
  29 static inline OrderedSet* ordered_set_free(OrderedSet *s) {
  30         ordered_hashmap_free((OrderedHashmap*) s);
  31         return NULL;
  32 }
  33
  34 static inline OrderedSet* ordered_set_free_free(OrderedSet *s) {
  35         ordered_hashmap_free_free((OrderedHashmap*) s);
  36         return NULL;
  37 }
  38
  39 static inline int ordered_set_put(OrderedSet *s, void *p) {
  40         return ordered_hashmap_put((OrderedHashmap*) s, p, p);
  41 }
  42
  43 static inline bool ordered_set_isempty(OrderedSet *s) {
  44         return ordered_hashmap_isempty((OrderedHashmap*) s);
  45 }
  46
  47 static inline bool ordered_set_iterate(OrderedSet *s, Iterator *i, void **value) {
  48         return ordered_hashmap_iterate((OrderedHashmap*) s, i, value, NULL);
  49 }
  50
  51 int ordered_set_consume(OrderedSet *s, void *p);
  52 int ordered_set_put_strdup(OrderedSet *s, const char *p);
  53 int ordered_set_put_strdupv(OrderedSet *s, char **l);
  54
  55 #define ORDERED_SET_FOREACH(e, s, i)                                    \
  56         for ((i) = ITERATOR_FIRST; ordered_set_iterate((s), &(i), (void**)&(e)); )
  57
  58 DEFINE_TRIVIAL_CLEANUP_FUNC(OrderedSet*, ordered_set_free);
  59 DEFINE_TRIVIAL_CLEANUP_FUNC(OrderedSet*, ordered_set_free_free);
  60
  61 #define _cleanup_ordered_set_free_ _cleanup_(ordered_set_freep)
  62 #define _cleanup_ordered_set_free_free_ _cleanup_(ordered_set_free_freep)