/*

 * 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); } \

hb_shaper_lazy_loader_t<hb_font_t, 1u, hb_ot_font_data_t>::create(hb_font_t*)

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    { return HB_SHAPER_DATA_CREATE_FUNC (shaper, object) (data); } \

Unexecuted instantiation: hb_shaper_lazy_loader_t<hb_font_t, 2u, hb_fallback_font_data_t>::create(hb_font_t*)

hb_shaper_lazy_loader_t<hb_face_t, 1u, hb_ot_face_data_t>::create(hb_face_t*)

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    { return HB_SHAPER_DATA_CREATE_FUNC (shaper, object) (data); } \

Unexecuted instantiation: hb_shaper_lazy_loader_t<hb_face_t, 2u, hb_fallback_face_data_t>::create(hb_face_t*)

    static Type *get_null () { return nullptr; } \

hb_shaper_lazy_loader_t<hb_font_t, 1u, hb_ot_font_data_t>::get_null()

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    static Type *get_null () { return nullptr; } \

Unexecuted instantiation: hb_shaper_lazy_loader_t<hb_font_t, 2u, hb_fallback_font_data_t>::get_null()

hb_shaper_lazy_loader_t<hb_face_t, 1u, hb_ot_face_data_t>::get_null()

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    static Type *get_null () { return nullptr; } \

Unexecuted instantiation: hb_shaper_lazy_loader_t<hb_face_t, 2u, hb_fallback_face_data_t>::get_null()

    static void destroy (Type *p) { HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (p); } \

hb_shaper_lazy_loader_t<hb_font_t, 1u, hb_ot_font_data_t>::destroy(hb_ot_font_data_t*)

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    static void destroy (Type *p) { HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (p); } \

Unexecuted instantiation: hb_shaper_lazy_loader_t<hb_font_t, 2u, hb_fallback_font_data_t>::destroy(hb_fallback_font_data_t*)

hb_shaper_lazy_loader_t<hb_face_t, 1u, hb_ot_face_data_t>::destroy(hb_ot_face_data_t*)

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    static void destroy (Type *p) { HB_SHAPER_DATA_DESTROY_FUNC (shaper, object) (p); } \

Unexecuted instantiation: hb_shaper_lazy_loader_t<hb_face_t, 2u, hb_fallback_face_data_t>::destroy(hb_fallback_face_data_t*)

  }; \

  \

  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

  }

hb_shaper_object_dataset_t<hb_face_t>::init0(hb_face_t*)

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  {

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    this->parent_data = parent_data;

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#define HB_SHAPER_IMPLEMENT(shaper) shaper.init0 ();

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#include "hb-shaper-list.hh"

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#undef HB_SHAPER_IMPLEMENT

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  }

hb_shaper_object_dataset_t<hb_font_t>::init0(hb_font_t*)

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  {

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    this->parent_data = parent_data;

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#define HB_SHAPER_IMPLEMENT(shaper) shaper.init0 ();

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#include "hb-shaper-list.hh"

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#undef HB_SHAPER_IMPLEMENT

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  }

  void fini ()

  {

#define HB_SHAPER_IMPLEMENT(shaper) shaper.fini ();

#include "hb-shaper-list.hh"

#undef HB_SHAPER_IMPLEMENT

  }

hb_shaper_object_dataset_t<hb_font_t>::fini()

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  {

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#define HB_SHAPER_IMPLEMENT(shaper) shaper.fini ();

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#include "hb-shaper-list.hh"

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#undef HB_SHAPER_IMPLEMENT

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  }

hb_shaper_object_dataset_t<hb_face_t>::fini()

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  {

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#define HB_SHAPER_IMPLEMENT(shaper) shaper.fini ();

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#include "hb-shaper-list.hh"

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#undef HB_SHAPER_IMPLEMENT

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  }

  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 */