kc3-lang/harfbuzz/src/hb-set.h

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• Hash : 694eaf63
  Author :
  Date : 2018-02-14T01:00:10
  

  [set] Add backwards iterator
  
  New API:
  - hb_set_previous()
  - hb_set_previous_range()
  

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• src/hb-set.h

• /*
   * 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
   */
  
  #ifndef HB_H_IN
  #error "Include <hb.h> instead."
  #endif
  
  #ifndef HB_SET_H
  #define HB_SET_H
  
  #include "hb-common.h"
  
  HB_BEGIN_DECLS
  
  
  /*
   * Since: 0.9.21
   */
  #define HB_SET_VALUE_INVALID ((hb_codepoint_t) -1)
  
  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 void
  hb_set_clear (hb_set_t *set);
  
  HB_EXTERN hb_bool_t
  hb_set_is_empty (const hb_set_t *set);
  
  HB_EXTERN hb_bool_t
  hb_set_has (const hb_set_t *set,
  	    hb_codepoint_t  codepoint);
  
  /* Right now limited to 16-bit integers.  Eventually will do full codepoint range, sans -1
   * which we will use as a sentinel. */
  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_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 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);
  
  
  HB_END_DECLS
  
  #endif /* HB_SET_H */
  

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