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 typedef struct hb_set_t hb_set_t;
  40
  41
  42 hb_set_t *
  43 hb_set_create (void);
  44
  45 hb_set_t *
  46 hb_set_get_empty (void);
  47
  48 hb_set_t *
  49 hb_set_reference (hb_set_t *set);
  50
  51 void
  52 hb_set_destroy (hb_set_t *set);
  53
  54 hb_bool_t
  55 hb_set_set_user_data (hb_set_t           *set,
  56                       hb_user_data_key_t *key,
  57                       void *              data,
  58                       hb_destroy_func_t   destroy,
  59                       hb_bool_t           replace);
  60
  61 void *
  62 hb_set_get_user_data (hb_set_t           *set,
  63                       hb_user_data_key_t *key);
  64
  65
  66 /* Returns false if allocation has failed before */
  67 hb_bool_t
  68 hb_set_allocation_successful (const hb_set_t *set);
  69
  70 void
  71 hb_set_clear (hb_set_t *set);
  72
  73 hb_bool_t
  74 hb_set_is_empty (const hb_set_t *set);
  75
  76 hb_bool_t
  77 hb_set_has (const hb_set_t *set,
  78             hb_codepoint_t  codepoint);
  79
  80 /* Right now limited to 16-bit integers.  Eventually will do full codepoint range, sans -1
  81  * which we will use as a sentinel. */
  82 void
  83 hb_set_add (hb_set_t       *set,
  84             hb_codepoint_t  codepoint);
  85
  86 void
  87 hb_set_add_range (hb_set_t       *set,
  88                   hb_codepoint_t  first,
  89                   hb_codepoint_t  last);
  90
  91 void
  92 hb_set_del (hb_set_t       *set,
  93             hb_codepoint_t  codepoint);
  94
  95 void
  96 hb_set_del_range (hb_set_t       *set,
  97                   hb_codepoint_t  first,
  98                   hb_codepoint_t  last);
  99
 100 hb_bool_t
 101 hb_set_is_equal (const hb_set_t *set,
 102                  const hb_set_t *other);
 103
 104 void
 105 hb_set_set (hb_set_t       *set,
 106             const hb_set_t *other);
 107
 108 void
 109 hb_set_union (hb_set_t       *set,
 110               const hb_set_t *other);
 111
 112 void
 113 hb_set_intersect (hb_set_t       *set,
 114                   const hb_set_t *other);
 115
 116 void
 117 hb_set_subtract (hb_set_t       *set,
 118                  const hb_set_t *other);
 119
 120 void
 121 hb_set_symmetric_difference (hb_set_t       *set,
 122                              const hb_set_t *other);
 123
 124 void
 125 hb_set_invert (hb_set_t *set);
 126
 127 unsigned int
 128 hb_set_get_population (const hb_set_t *set);
 129
 130 /* Returns -1 if set empty. */
 131 hb_codepoint_t
 132 hb_set_get_min (const hb_set_t *set);
 133
 134 /* Returns -1 if set empty. */
 135 hb_codepoint_t
 136 hb_set_get_max (const hb_set_t *set);
 137
 138 /* Pass -1 in to get started. */
 139 hb_bool_t
 140 hb_set_next (const hb_set_t *set,
 141              hb_codepoint_t *codepoint);
 142
 143 /* Pass -1 for first and last to get started. */
 144 hb_bool_t
 145 hb_set_next_range (const hb_set_t *set,
 146                    hb_codepoint_t *first,
 147                    hb_codepoint_t *last);
 148
 149
 150 HB_END_DECLS
 151
 152 #endif /* HB_SET_H */