gfx/harfbuzz/src/hb-shaper-private.hh@129ffea94266
gfx/harfbuzz/src/hb-shaper-private.hh
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
1 /*
2 * Copyright © 2012 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 */
27 #ifndef HB_SHAPER_PRIVATE_HH
28 #define HB_SHAPER_PRIVATE_HH
30 #include "hb-private.hh"
32 typedef hb_bool_t hb_shape_func_t (hb_shape_plan_t *shape_plan,
33 hb_font_t *font,
34 hb_buffer_t *buffer,
35 const hb_feature_t *features,
36 unsigned int num_features);
38 #define HB_SHAPER_IMPLEMENT(name) \
39 extern "C" HB_INTERNAL hb_shape_func_t _hb_##name##_shape;
40 #include "hb-shaper-list.hh"
41 #undef HB_SHAPER_IMPLEMENT
43 struct hb_shaper_pair_t {
44 char name[16];
45 hb_shape_func_t *func;
46 };
48 HB_INTERNAL const hb_shaper_pair_t *
49 _hb_shapers_get (void);
52 /* For embedding in face / font / ... */
53 struct hb_shaper_data_t {
54 #define HB_SHAPER_IMPLEMENT(shaper) void *shaper;
55 #include "hb-shaper-list.hh"
56 #undef HB_SHAPER_IMPLEMENT
57 };
59 #define HB_SHAPERS_COUNT (sizeof (hb_shaper_data_t) / sizeof (void *))
61 /* Means: succeeded, but don't need to keep any data. */
62 #define HB_SHAPER_DATA_SUCCEEDED ((void *) +1)
64 /* Means: tried but failed to create. */
65 #define HB_SHAPER_DATA_INVALID ((void *) -1)
66 #define HB_SHAPER_DATA_IS_INVALID(data) ((void *) (data) == HB_SHAPER_DATA_INVALID)
68 #define HB_SHAPER_DATA_TYPE(shaper, object) struct hb_##shaper##_shaper_##object##_data_t
69 #define HB_SHAPER_DATA_INSTANCE(shaper, object, instance) (* (HB_SHAPER_DATA_TYPE(shaper, object) **) &(instance)->shaper_data.shaper)
70 #define HB_SHAPER_DATA(shaper, object) HB_SHAPER_DATA_INSTANCE (shaper, object, object)
71 #define HB_SHAPER_DATA_CREATE_FUNC(shaper, object) _hb_##shaper##_shaper_##object##_data_create
72 #define HB_SHAPER_DATA_DESTROY_FUNC(shaper, object) _hb_##shaper##_shaper_##object##_data_destroy
74 #define HB_SHAPER_DATA_PROTOTYPE(shaper, object) \
75 HB_SHAPER_DATA_TYPE (shaper, object); /* Type forward declaration. */ \
76 extern "C" HB_INTERNAL HB_SHAPER_DATA_TYPE (shaper, object) * \
77 HB_SHAPER_DATA_CREATE_FUNC (shaper, object) (hb_##object##_t *object HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS); \
78 extern "C" HB_INTERNAL void \
79 HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (HB_SHAPER_DATA_TYPE (shaper, object) *data)
81 #define HB_SHAPER_DATA_DESTROY(shaper, object) \
82 if (object->shaper_data.shaper && \
83 object->shaper_data.shaper != HB_SHAPER_DATA_INVALID && \
84 object->shaper_data.shaper != HB_SHAPER_DATA_SUCCEEDED) \
85 HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (HB_SHAPER_DATA (shaper, object));
87 #define HB_SHAPER_DATA_ENSURE_DECLARE(shaper, object) \
88 static inline bool \
89 hb_##shaper##_shaper_##object##_data_ensure (hb_##object##_t *object) \
90 {\
91 retry: \
92 HB_SHAPER_DATA_TYPE (shaper, object) *data = (HB_SHAPER_DATA_TYPE (shaper, object) *) hb_atomic_ptr_get (&HB_SHAPER_DATA (shaper, object)); \
93 if (unlikely (!data)) { \
94 data = HB_SHAPER_DATA_CREATE_FUNC (shaper, object) (object); \
95 if (unlikely (!data)) \
96 data = (HB_SHAPER_DATA_TYPE (shaper, object) *) HB_SHAPER_DATA_INVALID; \
97 if (!hb_atomic_ptr_cmpexch (&HB_SHAPER_DATA (shaper, object), NULL, data)) { \
98 if (data && \
99 data != HB_SHAPER_DATA_INVALID && \
100 data != HB_SHAPER_DATA_SUCCEEDED) \
101 HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (data); \
102 goto retry; \
103 } \
104 } \
105 return data != NULL && !HB_SHAPER_DATA_IS_INVALID (data); \
106 }
109 #endif /* HB_SHAPER_PRIVATE_HH */
