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      1 /*
      2  * Copyright  2011  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 #include "hb-private.hh"
     28 
     29 /* g++ didn't like older gtype.h gcc-only code path. */
     30 #include <glib.h>
     31 #if !GLIB_CHECK_VERSION(2,29,16)
     32 #undef __GNUC__
     33 #undef __GNUC_MINOR__
     34 #define __GNUC__ 2
     35 #define __GNUC_MINOR__ 6
     36 #endif
     37 
     38 #include "hb-gobject.h"
     39 
     40 #define HB_DEFINE_BOXED_TYPE(name,copy_func,free_func) \
     41 GType \
     42 hb_gobject_##name##_get_type (void) \
     43 { \
     44    static gsize type_id = 0; \
     45    if (g_once_init_enter (&type_id)) { \
     46       GType id = g_boxed_type_register_static (g_intern_static_string ("hb_" #name "_t"), \
     47 					       (GBoxedCopyFunc) copy_func, \
     48 					       (GBoxedFreeFunc) free_func); \
     49       g_once_init_leave (&type_id, id); \
     50    } \
     51    return type_id; \
     52 }
     53 
     54 #define HB_DEFINE_OBJECT_TYPE(name) \
     55 	HB_DEFINE_BOXED_TYPE (name, hb_##name##_reference, hb_##name##_destroy);
     56 
     57 HB_DEFINE_OBJECT_TYPE (buffer)
     58 HB_DEFINE_OBJECT_TYPE (blob)
     59 HB_DEFINE_OBJECT_TYPE (face)
     60 HB_DEFINE_OBJECT_TYPE (font)
     61 HB_DEFINE_OBJECT_TYPE (font_funcs)
     62 HB_DEFINE_OBJECT_TYPE (set)
     63 HB_DEFINE_OBJECT_TYPE (shape_plan)
     64 HB_DEFINE_OBJECT_TYPE (unicode_funcs)
     65 
     66 
     67 static hb_feature_t *feature_reference (hb_feature_t *g)
     68 {
     69   hb_feature_t *c = (hb_feature_t *) calloc (1, sizeof (hb_feature_t));
     70   if (unlikely (!c)) return NULL;
     71   *c = *g;
     72   return c;
     73 }
     74 static void feature_destroy (hb_feature_t *g) { free (g); }
     75 HB_DEFINE_BOXED_TYPE (feature, feature_reference, feature_destroy)
     76 
     77 static hb_glyph_info_t *glyph_info_reference (hb_glyph_info_t *g)
     78 {
     79   hb_glyph_info_t *c = (hb_glyph_info_t *) calloc (1, sizeof (hb_glyph_info_t));
     80   if (unlikely (!c)) return NULL;
     81   *c = *g;
     82   return c;
     83 }
     84 static void glyph_info_destroy (hb_glyph_info_t *g) { free (g); }
     85 HB_DEFINE_BOXED_TYPE (glyph_info, glyph_info_reference, glyph_info_destroy)
     86 
     87 static hb_glyph_position_t *glyph_position_reference (hb_glyph_position_t *g)
     88 {
     89   hb_glyph_position_t *c = (hb_glyph_position_t *) calloc (1, sizeof (hb_glyph_position_t));
     90   if (unlikely (!c)) return NULL;
     91   *c = *g;
     92   return c;
     93 }
     94 static void glyph_position_destroy (hb_glyph_position_t *g) { free (g); }
     95 HB_DEFINE_BOXED_TYPE (glyph_position, glyph_position_reference, glyph_position_destroy)
     96 
     97 static hb_segment_properties_t *segment_properties_reference (hb_segment_properties_t *g)
     98 {
     99   hb_segment_properties_t *c = (hb_segment_properties_t *) calloc (1, sizeof (hb_segment_properties_t));
    100   if (unlikely (!c)) return NULL;
    101   *c = *g;
    102   return c;
    103 }
    104 static void segment_properties_destroy (hb_segment_properties_t *g) { free (g); }
    105 HB_DEFINE_BOXED_TYPE (segment_properties, segment_properties_reference, segment_properties_destroy)
    106 
    107 static hb_user_data_key_t user_data_key_reference (hb_user_data_key_t l) { return l; }
    108 static void user_data_key_destroy (hb_user_data_key_t l) { }
    109 HB_DEFINE_BOXED_TYPE (user_data_key, user_data_key_reference, user_data_key_destroy)
    110 
    111 
    112 static hb_language_t *language_reference (hb_language_t *l)
    113 {
    114   hb_language_t *c = (hb_language_t *) calloc (1, sizeof (hb_language_t));
    115   if (unlikely (!c)) return NULL;
    116   *c = *l;
    117   return c;
    118 }
    119 static void language_destroy (hb_language_t *l) { free (l); }
    120 HB_DEFINE_BOXED_TYPE (language, language_reference, language_destroy)
    121