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 /*
  40  * Since: 0.9.21
  41  */
  42 #define HB_SET_VALUE_INVALID ((hb_codepoint_t) -1)
  43
  44 typedef struct hb_set_t hb_set_t;
  45
  46
  47 HB_EXTERN hb_set_t *
  48 hb_set_create (void);
  49
  50 HB_EXTERN hb_set_t *
  51 hb_set_get_empty (void);
  52
  53 HB_EXTERN hb_set_t *
  54 hb_set_reference (hb_set_t *set);
  55
  56 HB_EXTERN void
  57 hb_set_destroy (hb_set_t *set);
  58
  59 HB_EXTERN hb_bool_t
  60 hb_set_set_user_data (hb_set_t           *set,
  61                       hb_user_data_key_t *key,
  62                       void *              data,
  63                       hb_destroy_func_t   destroy,
  64                       hb_bool_t           replace);
  65
  66 HB_EXTERN void *
  67 hb_set_get_user_data (hb_set_t           *set,
  68                       hb_user_data_key_t *key);
  69
  70
  71 /* Returns false if allocation has failed before */
  72 HB_EXTERN hb_bool_t
  73 hb_set_allocation_successful (const hb_set_t *set);
  74
  75 HB_EXTERN void
  76 hb_set_clear (hb_set_t *set);
  77
  78 HB_EXTERN hb_bool_t
  79 hb_set_is_empty (const hb_set_t *set);
  80
  81 HB_EXTERN hb_bool_t
  82 hb_set_has (const hb_set_t *set,
  83             hb_codepoint_t  codepoint);
  84
  85 /* Right now limited to 16-bit integers.  Eventually will do full codepoint range, sans -1
  86  * which we will use as a sentinel. */
  87 HB_EXTERN void
  88 hb_set_add (hb_set_t       *set,
  89             hb_codepoint_t  codepoint);
  90
  91 HB_EXTERN void
  92 hb_set_add_range (hb_set_t       *set,
  93                   hb_codepoint_t  first,
  94                   hb_codepoint_t  last);
  95
  96 HB_EXTERN void
  97 hb_set_del (hb_set_t       *set,
  98             hb_codepoint_t  codepoint);
  99
 100 HB_EXTERN void
 101 hb_set_del_range (hb_set_t       *set,
 102                   hb_codepoint_t  first,
 103                   hb_codepoint_t  last);
 104
 105 HB_EXTERN hb_bool_t
 106 hb_set_is_equal (const hb_set_t *set,
 107                  const hb_set_t *other);
 108
 109 HB_EXTERN void
 110 hb_set_set (hb_set_t       *set,
 111             const hb_set_t *other);
 112
 113 HB_EXTERN void
 114 hb_set_union (hb_set_t       *set,
 115               const hb_set_t *other);
 116
 117 HB_EXTERN void
 118 hb_set_intersect (hb_set_t       *set,
 119                   const hb_set_t *other);
 120
 121 HB_EXTERN void
 122 hb_set_subtract (hb_set_t       *set,
 123                  const hb_set_t *other);
 124
 125 HB_EXTERN void
 126 hb_set_symmetric_difference (hb_set_t       *set,
 127                              const hb_set_t *other);
 128
 129 HB_EXTERN void
 130 hb_set_invert (hb_set_t *set);
 131
 132 HB_EXTERN unsigned int
 133 hb_set_get_population (const hb_set_t *set);
 134
 135 /* Returns -1 if set empty. */
 136 HB_EXTERN hb_codepoint_t
 137 hb_set_get_min (const hb_set_t *set);
 138
 139 /* Returns -1 if set empty. */
 140 HB_EXTERN hb_codepoint_t
 141 hb_set_get_max (const hb_set_t *set);
 142
 143 /* Pass -1 in to get started. */
 144 HB_EXTERN hb_bool_t
 145 hb_set_next (const hb_set_t *set,
 146              hb_codepoint_t *codepoint);
 147
 148 /* Pass -1 for first and last to get started. */
 149 HB_EXTERN hb_bool_t
 150 hb_set_next_range (const hb_set_t *set,
 151                    hb_codepoint_t *first,
 152                    hb_codepoint_t *last);
 153
 154
 155 HB_END_DECLS
 156
 157 #endif /* HB_SET_H */