Quelle hb-set.h Sprache: C

/*
* Copyright © 2012  Google, Inc.
*
*  This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Behdad Esfahbod
*/

#if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR)
#error "Include instead."
#endif

#ifndef HB_SET_H
#define HB_SET_H

#include "hb-common.h"

HB_BEGIN_DECLS

/**
* HB_SET_VALUE_INVALID:
*
* Unset #hb_set_t value.
*
* Since: 0.9.21
*/
#define HB_SET_VALUE_INVALID ((hb_codepoint_t) -1)

/**
* hb_set_t:
*
* Data type for holding a set of integers. #hb_set_t's are
* used to gather and contain glyph IDs, Unicode code
* points, and various other collections of discrete
* values.
*
**/
typedef struct hb_set_t hb_set_t;

HB_EXTERN hb_set_t *
hb_set_create (void);

HB_EXTERN hb_set_t *
hb_set_get_empty (void);

HB_EXTERN hb_set_t *
hb_set_reference (hb_set_t *set);

HB_EXTERN void
hb_set_destroy (hb_set_t *set);

HB_EXTERN hb_bool_t
hb_set_set_user_data (hb_set_t           *set,
                      hb_user_data_key_t *key,
                      void *              data,
                      hb_destroy_func_t   destroy,
                      hb_bool_t           replace);

HB_EXTERN void *
hb_set_get_user_data (hb_set_t           *set,
                      hb_user_data_key_t *key);

/* Returns false if allocation has failed before */
HB_EXTERN hb_bool_t
hb_set_allocation_successful (const hb_set_t *set);

HB_EXTERN hb_set_t *
hb_set_copy (const hb_set_t *set);

HB_EXTERN void
hb_set_clear (hb_set_t *set);

HB_EXTERN hb_bool_t
hb_set_is_empty (const hb_set_t *set);

HB_EXTERN void
hb_set_invert (hb_set_t *set);

HB_EXTERN hb_bool_t
hb_set_has (const hb_set_t *set,
            hb_codepoint_t  codepoint);

HB_EXTERN void
hb_set_add (hb_set_t       *set,
            hb_codepoint_t  codepoint);

HB_EXTERN void
hb_set_add_range (hb_set_t       *set,
                  hb_codepoint_t  first,
                  hb_codepoint_t  last);

HB_EXTERN void
hb_set_add_sorted_array (hb_set_t             *set,
                         const hb_codepoint_t *sorted_codepoints,
                         unsigned int          num_codepoints);

HB_EXTERN void
hb_set_del (hb_set_t       *set,
            hb_codepoint_t  codepoint);

HB_EXTERN void
hb_set_del_range (hb_set_t       *set,
                  hb_codepoint_t  first,
                  hb_codepoint_t  last);

HB_EXTERN hb_bool_t
hb_set_is_equal (const hb_set_t *set,
                 const hb_set_t *other);

HB_EXTERN unsigned int
hb_set_hash (const hb_set_t *set);

HB_EXTERN hb_bool_t
hb_set_is_subset (const hb_set_t *set,
                  const hb_set_t *larger_set);

HB_EXTERN void
hb_set_set (hb_set_t       *set,
            const hb_set_t *other);

HB_EXTERN void
hb_set_union (hb_set_t       *set,
              const hb_set_t *other);

HB_EXTERN void
hb_set_intersect (hb_set_t       *set,
                  const hb_set_t *other);

HB_EXTERN void
hb_set_subtract (hb_set_t       *set,
                 const hb_set_t *other);

HB_EXTERN void
hb_set_symmetric_difference (hb_set_t       *set,
                             const hb_set_t *other);

HB_EXTERN unsigned int
hb_set_get_population (const hb_set_t *set);

/* Returns HB_SET_VALUE_INVALID if set empty. */
HB_EXTERN hb_codepoint_t
hb_set_get_min (const hb_set_t *set);

/* Returns HB_SET_VALUE_INVALID if set empty. */
HB_EXTERN hb_codepoint_t
hb_set_get_max (const hb_set_t *set);

/* Pass HB_SET_VALUE_INVALID in to get started. */
HB_EXTERN hb_bool_t
hb_set_next (const hb_set_t *set,
             hb_codepoint_t *codepoint);

/* Pass HB_SET_VALUE_INVALID in to get started. */
HB_EXTERN hb_bool_t
hb_set_previous (const hb_set_t *set,
                 hb_codepoint_t *codepoint);

/* Pass HB_SET_VALUE_INVALID for first and last to get started. */
HB_EXTERN hb_bool_t
hb_set_next_range (const hb_set_t *set,
                   hb_codepoint_t *first,
                   hb_codepoint_t *last);

/* Pass HB_SET_VALUE_INVALID for first and last to get started. */
HB_EXTERN hb_bool_t
hb_set_previous_range (const hb_set_t *set,
                       hb_codepoint_t *first,
                       hb_codepoint_t *last);

/* Pass HB_SET_VALUE_INVALID in to get started. */
HB_EXTERN unsigned int
hb_set_next_many (const hb_set_t *set,
                  hb_codepoint_t  codepoint,
                  hb_codepoint_t *out,
                  unsigned int    size);

HB_END_DECLS

#endif /* HB_SET_H */

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