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+/*
+ * Copyright © 2012 Google, Inc.
+ *
+ * This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_SHAPER_HH
+#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,
+ hb_buffer_t *buffer,
+ const hb_feature_t *features,
+ unsigned int num_features);
+
+#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_entry_t {
+ char name[16];
+ hb_shape_func_t *func;
+};
+
+HB_INTERNAL const hb_shaper_entry_t *
+_hb_shapers_get ();
+
+
+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,
+};
+
+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_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); \
+ extern "C" HB_INTERNAL void \
+ 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 after. */
+
+
+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_HH */