src/hb-unicode-private.hh

   1 /*
   2  * Copyright © 2009  Red Hat, Inc.
   3  * Copyright © 2011 Codethink Limited
   4  * Copyright © 2010,2011  Google, Inc.
   5  *
   6  *  This is part of HarfBuzz, a text shaping library.
   7  *
   8  * Permission is hereby granted, without written agreement and without
   9  * license or royalty fees, to use, copy, modify, and distribute this
  10  * software and its documentation for any purpose, provided that the
  11  * above copyright notice and the following two paragraphs appear in
  12  * all copies of this software.
  13  *
  14  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  15  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  16  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  17  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  18  * DAMAGE.
  19  *
  20  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  21  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  22  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  23  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  24  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  25  *
  26  * Red Hat Author(s): Behdad Esfahbod
  27  * Codethink Author(s): Ryan Lortie
  28  * Google Author(s): Behdad Esfahbod
  29  */
  30
  31 #ifndef HB_UNICODE_PRIVATE_HH
  32 #define HB_UNICODE_PRIVATE_HH
  33
  34 #include "hb-private.hh"
  35
  36 #include "hb-unicode.h"
  37
  38 HB_BEGIN_DECLS
  39
  40
  41 /*
  42  * hb_unicode_funcs_t
  43  */
  44
  45 struct _hb_unicode_funcs_t {
  46   hb_reference_count_t ref_count;
  47   hb_unicode_funcs_t *parent;
  48
  49   hb_bool_t immutable;
  50
  51 #define IMPLEMENT(return_type, name) \
  52   inline return_type \
  53   get_##name (hb_codepoint_t unicode) \
  54   { return this->get.name (this, unicode, this->user_data.name); }
  55
  56   IMPLEMENT (unsigned int, combining_class)
  57   IMPLEMENT (unsigned int, eastasian_width)
  58   IMPLEMENT (hb_unicode_general_category_t, general_category)
  59   IMPLEMENT (hb_codepoint_t, mirroring)
  60   IMPLEMENT (hb_script_t, script)
  61
  62 #undef IMPLEMENT
  63
  64   /* Don't access these directly.  Call get_*() instead. */
  65
  66   struct {
  67     hb_unicode_get_combining_class_func_t       combining_class;
  68     hb_unicode_get_eastasian_width_func_t       eastasian_width;
  69     hb_unicode_get_general_category_func_t      general_category;
  70     hb_unicode_get_mirroring_func_t             mirroring;
  71     hb_unicode_get_script_func_t                script;
  72   } get;
  73
  74   struct {
  75     void                                        *combining_class;
  76     void                                        *eastasian_width;
  77     void                                        *general_category;
  78     void                                        *mirroring;
  79     void                                        *script;
  80   } user_data;
  81
  82   struct {
  83     hb_destroy_func_t                           combining_class;
  84     hb_destroy_func_t                           eastasian_width;
  85     hb_destroy_func_t                           general_category;
  86     hb_destroy_func_t                           mirroring;
  87     hb_destroy_func_t                           script;
  88   } destroy;
  89 };
  90
  91 extern HB_INTERNAL hb_unicode_funcs_t _hb_unicode_funcs_nil;
  92
  93
  94 HB_END_DECLS
  95
  96 #endif /* HB_UNICODE_PRIVATE_HH */