third_party/harfbuzz-ng/src/hb-set.h

   1 /*
   2  * Copyright © 2012  Google, Inc.
   3  *
   4  *  This is part of HarfBuzz, a text shaping library.
   5  *
   6  * Permission is hereby granted, without written agreement and without
   7  * license or royalty fees, to use, copy, modify, and distribute this
   8  * software and its documentation for any purpose, provided that the
   9  * above copyright notice and the following two paragraphs appear in
  10  * all copies of this software.
  11  *
  12  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  13  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  14  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  15  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  16  * DAMAGE.
  17  *
  18  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  19  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  20  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  21  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  22  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  23  *
  24  * Google Author(s): Behdad Esfahbod
  25  */
  26
  27 #ifndef HB_H_IN
  28 #error "Include <hb.h> instead."
  29 #endif
  30
  31 #ifndef HB_SET_H
  32 #define HB_SET_H
  33
  34 #include "hb-common.h"
  35
  36 HB_BEGIN_DECLS
  37
  38
  39 #define HB_SET_VALUE_INVALID ((hb_codepoint_t) -1)
  40
  41 typedef struct hb_set_t hb_set_t;
  42
  43
  44 hb_set_t *
  45 hb_set_create (void);
  46
  47 hb_set_t *
  48 hb_set_get_empty (void);
  49
  50 hb_set_t *
  51 hb_set_reference (hb_set_t *set);
  52
  53 void
  54 hb_set_destroy (hb_set_t *set);
  55
  56 hb_bool_t
  57 hb_set_set_user_data (hb_set_t           *set,
  58                       hb_user_data_key_t *key,
  59                       void *              data,
  60                       hb_destroy_func_t   destroy,
  61                       hb_bool_t           replace);
  62
  63 void *
  64 hb_set_get_user_data (hb_set_t           *set,
  65                       hb_user_data_key_t *key);
  66
  67
  68 /* Returns false if allocation has failed before */
  69 hb_bool_t
  70 hb_set_allocation_successful (const hb_set_t *set);
  71
  72 void
  73 hb_set_clear (hb_set_t *set);
  74
  75 hb_bool_t
  76 hb_set_is_empty (const hb_set_t *set);
  77
  78 hb_bool_t
  79 hb_set_has (const hb_set_t *set,
  80             hb_codepoint_t  codepoint);
  81
  82 /* Right now limited to 16-bit integers.  Eventually will do full codepoint range, sans -1
  83  * which we will use as a sentinel. */
  84 void
  85 hb_set_add (hb_set_t       *set,
  86             hb_codepoint_t  codepoint);
  87
  88 void
  89 hb_set_add_range (hb_set_t       *set,
  90                   hb_codepoint_t  first,
  91                   hb_codepoint_t  last);
  92
  93 void
  94 hb_set_del (hb_set_t       *set,
  95             hb_codepoint_t  codepoint);
  96
  97 void
  98 hb_set_del_range (hb_set_t       *set,
  99                   hb_codepoint_t  first,
 100                   hb_codepoint_t  last);
 101
 102 hb_bool_t
 103 hb_set_is_equal (const hb_set_t *set,
 104                  const hb_set_t *other);
 105
 106 void
 107 hb_set_set (hb_set_t       *set,
 108             const hb_set_t *other);
 109
 110 void
 111 hb_set_union (hb_set_t       *set,
 112               const hb_set_t *other);
 113
 114 void
 115 hb_set_intersect (hb_set_t       *set,
 116                   const hb_set_t *other);
 117
 118 void
 119 hb_set_subtract (hb_set_t       *set,
 120                  const hb_set_t *other);
 121
 122 void
 123 hb_set_symmetric_difference (hb_set_t       *set,
 124                              const hb_set_t *other);
 125
 126 void
 127 hb_set_invert (hb_set_t *set);
 128
 129 unsigned int
 130 hb_set_get_population (const hb_set_t *set);
 131
 132 /* Returns -1 if set empty. */
 133 hb_codepoint_t
 134 hb_set_get_min (const hb_set_t *set);
 135
 136 /* Returns -1 if set empty. */
 137 hb_codepoint_t
 138 hb_set_get_max (const hb_set_t *set);
 139
 140 /* Pass -1 in to get started. */
 141 hb_bool_t
 142 hb_set_next (const hb_set_t *set,
 143              hb_codepoint_t *codepoint);
 144
 145 /* Pass -1 for first and last to get started. */
 146 hb_bool_t
 147 hb_set_next_range (const hb_set_t *set,
 148                    hb_codepoint_t *first,
 149                    hb_codepoint_t *last);
 150
 151
 152 HB_END_DECLS
 153
 154 #endif /* HB_SET_H */