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src/java.desktop/share/native/libfontmanager/harfbuzz/hb-shaper.hh
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@@ -22,14 +22,15 @@
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Behdad Esfahbod
*/
-#ifndef HB_SHAPER_PRIVATE_HH
-#define HB_SHAPER_PRIVATE_HH
+#ifndef HB_SHAPER_HH
+#define HB_SHAPER_HH
-#include "hb-private.hh"
+#include "hb.hh"
+#include "hb-machinery.hh"
typedef hb_bool_t hb_shape_func_t (hb_shape_plan_t *shape_plan,
hb_font_t *font,
hb_buffer_t *buffer,
const hb_feature_t *features,
@@ -38,87 +39,96 @@
#define HB_SHAPER_IMPLEMENT(name) \
extern "C" HB_INTERNAL hb_shape_func_t _hb_##name##_shape;
#include "hb-shaper-list.hh"
#undef HB_SHAPER_IMPLEMENT
-struct hb_shaper_pair_t {
+struct hb_shaper_entry_t {
char name[16];
hb_shape_func_t *func;
};
-HB_INTERNAL const hb_shaper_pair_t *
-_hb_shapers_get (void);
+HB_INTERNAL const hb_shaper_entry_t *
+_hb_shapers_get ();
-/* For embedding in face / font / ... */
-struct hb_shaper_data_t {
-#define HB_SHAPER_IMPLEMENT(shaper) void *shaper;
+template <typename Data, unsigned int WheresData, typename T>
+struct hb_shaper_lazy_loader_t;
+
+#define HB_SHAPER_ORDER(Shaper) \
+ HB_PASTE (HB_SHAPER_ORDER_, Shaper)
+enum hb_shaper_order_t
+{
+ _HB_SHAPER_ORDER_ORDER_ZERO,
+#define HB_SHAPER_IMPLEMENT(Shaper) \
+ HB_SHAPER_ORDER (Shaper),
#include "hb-shaper-list.hh"
#undef HB_SHAPER_IMPLEMENT
+ _HB_SHAPERS_COUNT_PLUS_ONE,
+ HB_SHAPERS_COUNT = _HB_SHAPERS_COUNT_PLUS_ONE - 1,
};
-#define HB_SHAPERS_COUNT (sizeof (hb_shaper_data_t) / sizeof (void *))
+template <enum hb_shaper_order_t order, typename Object> struct hb_shaper_object_data_type_t;
-/* Means: succeeded, but don't need to keep any data. */
#define HB_SHAPER_DATA_SUCCEEDED ((void *) +1)
-
-/* Means: tried but failed to create. */
-#define HB_SHAPER_DATA_INVALID ((void *) -1)
-#define HB_SHAPER_DATA_IS_INVALID(data) ((void *) (data) == HB_SHAPER_DATA_INVALID)
-
-#define HB_SHAPER_DATA_TYPE_NAME(shaper, object) hb_##shaper##_shaper_##object##_data_t
-#define HB_SHAPER_DATA_TYPE(shaper, object) struct HB_SHAPER_DATA_TYPE_NAME(shaper, object)
-#define HB_SHAPER_DATA_INSTANCE(shaper, object, instance) (* (HB_SHAPER_DATA_TYPE(shaper, object) **) &(instance)->shaper_data.shaper)
-#define HB_SHAPER_DATA(shaper, object) HB_SHAPER_DATA_INSTANCE(shaper, object, object)
+#define HB_SHAPER_DATA_TYPE(shaper, object) hb_##shaper##_##object##_data_t
#define HB_SHAPER_DATA_CREATE_FUNC(shaper, object) _hb_##shaper##_shaper_##object##_data_create
#define HB_SHAPER_DATA_DESTROY_FUNC(shaper, object) _hb_##shaper##_shaper_##object##_data_destroy
-#define HB_SHAPER_DATA_ENSURE_FUNC(shaper, object) hb_##shaper##_shaper_##object##_data_ensure
-#define HB_SHAPER_DATA_PROTOTYPE(shaper, object) \
- HB_SHAPER_DATA_TYPE (shaper, object); /* Type forward declaration. */ \
+#define HB_SHAPER_DATA_INSTANTIATE_SHAPERS(shaper, object) \
+ \
+ struct HB_SHAPER_DATA_TYPE (shaper, object); /* Type forward declaration. */ \
extern "C" HB_INTERNAL HB_SHAPER_DATA_TYPE (shaper, object) * \
- HB_SHAPER_DATA_CREATE_FUNC (shaper, object) (hb_##object##_t *object HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS); \
+ HB_SHAPER_DATA_CREATE_FUNC (shaper, object) (hb_##object##_t *object); \
extern "C" HB_INTERNAL void \
- HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (HB_SHAPER_DATA_TYPE (shaper, object) *data); \
- extern "C" HB_INTERNAL bool \
- HB_SHAPER_DATA_ENSURE_FUNC (shaper, object) (hb_##object##_t *object)
-
-#define HB_SHAPER_DATA_DESTROY(shaper, object) \
- if (HB_SHAPER_DATA_TYPE (shaper, object) *data = HB_SHAPER_DATA (shaper, object)) \
- if (data != HB_SHAPER_DATA_INVALID && data != HB_SHAPER_DATA_SUCCEEDED) \
- HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (data);
-
-#define HB_SHAPER_DATA_ENSURE_DEFINE(shaper, object) \
- HB_SHAPER_DATA_ENSURE_DEFINE_WITH_CONDITION(shaper, object, true)
-
-#define HB_SHAPER_DATA_ENSURE_DEFINE_WITH_CONDITION(shaper, object, condition) \
-bool \
-HB_SHAPER_DATA_ENSURE_FUNC(shaper, object) (hb_##object##_t *object) \
-{\
- retry: \
- HB_SHAPER_DATA_TYPE (shaper, object) *data = (HB_SHAPER_DATA_TYPE (shaper, object) *) hb_atomic_ptr_get (&HB_SHAPER_DATA (shaper, object)); \
- if (likely (data) && !(condition)) { \
- /* Drop and recreate. */ \
- /* If someone dropped it in the mean time, throw it away and don't touch it. \
- * Otherwise, destruct it. */ \
- if (hb_atomic_ptr_cmpexch (&HB_SHAPER_DATA (shaper, object), data, nullptr)) { \
- HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (data); \
- } \
- goto retry; \
- } \
- if (unlikely (!data)) { \
- data = HB_SHAPER_DATA_CREATE_FUNC (shaper, object) (object); \
- if (unlikely (!data)) \
- data = (HB_SHAPER_DATA_TYPE (shaper, object) *) HB_SHAPER_DATA_INVALID; \
- if (!hb_atomic_ptr_cmpexch (&HB_SHAPER_DATA (shaper, object), nullptr, data)) { \
- if (data && \
- data != HB_SHAPER_DATA_INVALID && \
- data != HB_SHAPER_DATA_SUCCEEDED) \
- HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (data); \
- goto retry; \
- } \
- } \
- return data != nullptr && !HB_SHAPER_DATA_IS_INVALID (data); \
-}
+ HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (HB_SHAPER_DATA_TYPE (shaper, object) *shaper##_##object); \
+ \
+ template <> \
+ struct hb_shaper_object_data_type_t<HB_SHAPER_ORDER (shaper), hb_##object##_t> \
+ { \
+ typedef HB_SHAPER_DATA_TYPE(shaper, object) value; \
+ }; \
+ \
+ template <unsigned int WheresData> \
+ struct hb_shaper_lazy_loader_t<hb_##object##_t, WheresData, HB_SHAPER_DATA_TYPE(shaper, object)> \
+ : hb_lazy_loader_t<HB_SHAPER_DATA_TYPE(shaper, object), \
+ hb_shaper_lazy_loader_t<hb_##object##_t, \
+ WheresData, \
+ HB_SHAPER_DATA_TYPE(shaper, object)>, \
+ hb_##object##_t, WheresData> \
+ { \
+ typedef HB_SHAPER_DATA_TYPE(shaper, object) Type; \
+ static Type* create (hb_##object##_t *data) \
+ { return HB_SHAPER_DATA_CREATE_FUNC (shaper, object) (data); } \
+ static Type *get_null () { return nullptr; } \
+ static void destroy (Type *p) { HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (p); } \
+ }; \
+ \
+ static_assert (true, "") /* Require semicolon. */
+
+
+template <typename Object>
+struct hb_shaper_object_dataset_t
+{
+ void init0 (Object *parent_data)
+ {
+ this->parent_data = parent_data;
+#define HB_SHAPER_IMPLEMENT(shaper) shaper.init0 ();
+#include "hb-shaper-list.hh"
+#undef HB_SHAPER_IMPLEMENT
+ }
+ void fini ()
+ {
+#define HB_SHAPER_IMPLEMENT(shaper) shaper.fini ();
+#include "hb-shaper-list.hh"
+#undef HB_SHAPER_IMPLEMENT
+ }
+ Object *parent_data; /* MUST be JUST before the lazy loaders. */
+#define HB_SHAPER_IMPLEMENT(shaper) \
+ hb_shaper_lazy_loader_t<Object, HB_SHAPER_ORDER(shaper), \
+ typename hb_shaper_object_data_type_t<HB_SHAPER_ORDER(shaper), Object>::value \
+ > shaper;
+#include "hb-shaper-list.hh"
+#undef HB_SHAPER_IMPLEMENT
+};
-#endif /* HB_SHAPER_PRIVATE_HH */
+#endif /* HB_SHAPER_HH */
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