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[HB] Initialize unicode funcs to nil getters

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This commit is contained in:
Behdad Esfahbod 2009-08-10 23:05:05 -04:00
parent 04cc0a29ee
commit 48910f8f00
1 changed files with 19 additions and 10 deletions
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29
src/hb-unicode.c
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@ -32,14 +32,20 @@
* hb_unicode_funcs_t
*/
static hb_codepoint_t hb_unicode_get_mirroring_char_nil (hb_codepoint_t unicode) { return unicode; }
static hb_category_t hb_unicode_get_general_category_nil (hb_codepoint_t unicode) { return HB_CATEGORY_OTHER_LETTER; }
static hb_script_t hb_unicode_get_script_nil (hb_codepoint_t unicode) { return HB_SCRIPT_UNKNOWN; }
static unsigned int hb_unicode_get_combining_class_nil (hb_codepoint_t unicode) { return 0; }
static unsigned int hb_unicode_get_eastasian_width_nil (hb_codepoint_t unicode) { return 1; }
static hb_unicode_funcs_t _hb_unicode_funcs_nil = {
HB_REFERENCE_COUNT_INVALID, /* ref_count */
NULL, /*get_general_category */
NULL, /*get_combining_class */
NULL, /*get_mirroring_char */
NULL, /*get_script */
NULL /*get_eastasian_width */
hb_unicode_get_general_category_nil,
hb_unicode_get_combining_class_nil,
hb_unicode_get_mirroring_char_nil,
hb_unicode_get_script_nil,
hb_unicode_get_eastasian_width_nil
};
hb_unicode_funcs_t *
@ -50,6 +56,9 @@ hb_unicode_funcs_create (void)
if (!HB_OBJECT_DO_CREATE (hb_unicode_funcs_t, ufuncs))
return &_hb_unicode_funcs_nil;
*ufuncs = _hb_unicode_funcs_nil;
HB_OBJECT_DO_INIT (ufuncs);
return ufuncs;
}
@ -95,7 +104,7 @@ hb_unicode_funcs_set_mirroring_char_func (hb_unicode_funcs_t *ufuncs,
if (HB_OBJECT_IS_INERT (ufuncs))
return;
ufuncs->get_mirroring_char = mirroring_char_func;
ufuncs->get_mirroring_char = mirroring_char_func ? mirroring_char_func : hb_unicode_get_mirroring_char_nil;
}
void
@ -105,7 +114,7 @@ hb_unicode_funcs_set_general_category_func (hb_unicode_funcs_t *ufuncs,
if (HB_OBJECT_IS_INERT (ufuncs))
return;
ufuncs->get_general_category = general_category_func;
ufuncs->get_general_category = general_category_func ? general_category_func : hb_unicode_get_general_category_nil;
}
void
@ -115,7 +124,7 @@ hb_unicode_funcs_set_script_func (hb_unicode_funcs_t *ufuncs,
if (HB_OBJECT_IS_INERT (ufuncs))
return;
ufuncs->get_script = script_func;
ufuncs->get_script = script_func ? script_func : hb_unicode_get_script_nil;
}
void
@ -125,7 +134,7 @@ hb_unicode_funcs_set_combining_class_func (hb_unicode_funcs_t *ufuncs,
if (HB_OBJECT_IS_INERT (ufuncs))
return;
ufuncs->get_combining_class = combining_class_func;
ufuncs->get_combining_class = combining_class_func ? combining_class_func : hb_unicode_get_combining_class_nil;
}
void
@ -135,6 +144,6 @@ hb_unicode_funcs_set_eastasian_width_func (hb_unicode_funcs_t *ufuncs,
if (HB_OBJECT_IS_INERT (ufuncs))
return;
ufuncs->get_eastasian_width = eastasian_width_func;
ufuncs->get_eastasian_width = eastasian_width_func ? eastasian_width_func : hb_unicode_get_eastasian_width_nil;
}