/*

 * Copyright © 2018  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_AAT_MAP_HH

#define HB_AAT_MAP_HH

#include "hb.hh"

struct hb_aat_map_t

{

  friend struct hb_aat_map_builder_t;

  public:

  void init ()

  {

    memset (this, 0, sizeof (*this));

    chain_flags.init ();

  }

  void fini () { chain_flags.fini (); }

  public:

  hb_vector_t<hb_mask_t> chain_flags;

};

struct hb_aat_map_builder_t

{

  public:

  HB_INTERNAL hb_aat_map_builder_t (hb_face_t *face_,

                                    const hb_segment_properties_t *props_ HB_UNUSED) :

                                      face (face_) {}

  HB_INTERNAL void add_feature (hb_tag_t tag, unsigned int value=1);

  HB_INTERNAL void compile (hb_aat_map_t  &m);

  public:

  struct feature_info_t

  {

    hb_aat_layout_feature_type_t  type;

    hb_aat_layout_feature_selector_t  setting;

    unsigned  seq; /* For stable sorting only. */

    static int cmp (const void *pa, const void *pb)

    {

      const feature_info_t *a = (const feature_info_t *) pa;

      const feature_info_t *b = (const feature_info_t *) pb;

      return (a->type != b->type) ? (a->type < b->type ? -1 : 1) :

             (a->seq < b->seq ? -1 : a->seq > b->seq ? 1 : 0);

    }

    int cmp (hb_aat_layout_feature_type_t ty) const

    {

      return (type != ty) ? (type < ty ? -1 : 1) : 0;

    }

  };

  public:

  hb_face_t *face;

  public:

  hb_vector_t<feature_info_t> features;

};

#endif /* HB_AAT_MAP_HH */