diff options
author | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2018-11-19 04:05:47 +0000 |
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committer | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2018-11-19 04:05:47 +0000 |
commit | a0f9dd8213083d3021d12beceb451325ee8fce30 (patch) | |
tree | c3de2c62a20cf8b71dbe6d968f463e8c5b76fc26 /Build/source/libs/harfbuzz/harfbuzz-src/src/hb-shaper.hh | |
parent | a34ffc9669bd1c626c01adc0292ee625b3ad16de (diff) |
harfbuzz-2.1.3
git-svn-id: svn://tug.org/texlive/trunk@49193 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-shaper.hh')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-shaper.hh | 148 |
1 files changed, 74 insertions, 74 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-shaper.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-shaper.hh index 361165e4f95..3fda27bc0ec 100644 --- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-shaper.hh +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-shaper.hh @@ -28,6 +28,7 @@ #define HB_SHAPER_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, @@ -40,95 +41,94 @@ typedef hb_bool_t hb_shape_func_t (hb_shape_plan_t *shape_plan, #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_INTERNAL const hb_shaper_entry_t * _hb_shapers_get (void); -/* 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) +template <typename Data, unsigned int WheresData, typename T> +struct hb_shaper_lazy_loader_t; -#define HB_SHAPER_DATA_TYPE_NAME(shaper, object) hb_##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) (* reinterpret_cast<hb_atomic_ptr_t<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_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, +}; + +template <enum hb_shaper_order_t order, typename Object> struct hb_shaper_object_data_type_t; + +#define HB_SHAPER_DATA_SUCCEEDED ((void *) +1) +#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).get ()) \ - 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 (shaper, object).get (); \ - if (likely (data) && !(condition)) { \ - /* XXX-MT-bug \ - * Note that evaluating condition above can be dangerous if another thread \ - * got here first and destructed data. That's, as always, bad use pattern. \ - * If you modify the font (change font size), other threads must not be \ - * using it at the same time. However, since this check is delayed to \ - * when one actually tries to shape something, this is a XXX race condition \ - * (and the only know we have that I know of) right now. Ie. you modify the \ - * font size in one thread, then (supposedly safely) try to use it from two \ - * or more threads and BOOM! I'm not sure how to fix this. We want RCU. \ - * Maybe when it doesn't matter when we finally implement AAT shaping, as - * this (condition) is currently only used by hb-coretext. */ \ - /* Drop and recreate. */ \ - /* If someone dropped it in the mean time, throw it away and don't touch it. \ - * Otherwise, destruct it. */ \ - if (likely (HB_SHAPER_DATA (shaper, object).cmpexch (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 (unlikely (!HB_SHAPER_DATA (shaper, object).cmpexch (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 && (void *) data != HB_SHAPER_DATA_INVALID; \ -} - - -/* For embedding in face / font / ... */ -struct hb_shaper_data_t { -#define HB_SHAPER_IMPLEMENT(shaper) hb_atomic_ptr_t<void *> shaper; + 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 inline Type* create (hb_##object##_t *data) \ + { return HB_SHAPER_DATA_CREATE_FUNC (shaper, object) (data); } \ + static inline Type *get_null (void) { return nullptr; } \ + static inline 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 +{ + inline 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 -}; -#define HB_SHAPERS_COUNT (sizeof (hb_shaper_data_t) / sizeof (void *)) + } + inline void fini (void) + { +#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_HH */ |