The Tor Browser: gfx/harfbuzz/src/hb-set.h@925c144e1f1f

     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  */

    27 #ifndef HB_H_IN

    28 #error "Include <hb.h> instead."

    29 #endif

    31 #ifndef HB_SET_H

    32 #define HB_SET_H

    34 #include "hb-common.h"

    36 HB_BEGIN_DECLS

    39 #define HB_SET_VALUE_INVALID ((hb_codepoint_t) -1)

    41 typedef struct hb_set_t hb_set_t;

    44 hb_set_t *

    45 hb_set_create (void);

    47 hb_set_t *

    48 hb_set_get_empty (void);

    50 hb_set_t *

    51 hb_set_reference (hb_set_t *set);

    53 void

    54 hb_set_destroy (hb_set_t *set);

    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);

    63 void *

    64 hb_set_get_user_data (hb_set_t           *set,

    65 		      hb_user_data_key_t *key);

    68 /* Returns false if allocation has failed before */

    69 hb_bool_t

    70 hb_set_allocation_successful (const hb_set_t *set);

    72 void

    73 hb_set_clear (hb_set_t *set);

    75 hb_bool_t

    76 hb_set_is_empty (const hb_set_t *set);

    78 hb_bool_t

    79 hb_set_has (const hb_set_t *set,

    80 	    hb_codepoint_t  codepoint);

    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);

    88 void

    89 hb_set_add_range (hb_set_t       *set,

    90 		  hb_codepoint_t  first,

    91 		  hb_codepoint_t  last);

    93 void

    94 hb_set_del (hb_set_t       *set,

    95 	    hb_codepoint_t  codepoint);

    97 void

    98 hb_set_del_range (hb_set_t       *set,

    99 		  hb_codepoint_t  first,

   100 		  hb_codepoint_t  last);

   102 hb_bool_t

   103 hb_set_is_equal (const hb_set_t *set,

   104 		 const hb_set_t *other);

   106 void

   107 hb_set_set (hb_set_t       *set,

   108 	    const hb_set_t *other);

   110 void

   111 hb_set_union (hb_set_t       *set,

   112 	      const hb_set_t *other);

   114 void

   115 hb_set_intersect (hb_set_t       *set,

   116 		  const hb_set_t *other);

   118 void

   119 hb_set_subtract (hb_set_t       *set,

   120 		 const hb_set_t *other);

   122 void

   123 hb_set_symmetric_difference (hb_set_t       *set,

   124 			     const hb_set_t *other);

   126 void

   127 hb_set_invert (hb_set_t *set);

   129 unsigned int

   130 hb_set_get_population (const hb_set_t *set);

   132 /* Returns -1 if set empty. */

   133 hb_codepoint_t

   134 hb_set_get_min (const hb_set_t *set);

   136 /* Returns -1 if set empty. */

   137 hb_codepoint_t

   138 hb_set_get_max (const hb_set_t *set);

   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);

   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);

   152 HB_END_DECLS

   154 #endif /* HB_SET_H */

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