harfbuzz/src/hb-shape-plan.cc

/*
 * 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
 */

#include "hb-private.hh"

#include "hb-shape-plan-private.hh"

#include "hb-font-private.hh"


/*
 * hb_shape_plan_t
 */

hb_shape_plan_t *
hb_shape_plan_create (hb_face_t                     *face,
		      const hb_segment_properties_t *props,
		      const hb_feature_t            *user_features,
		      unsigned int                   num_user_features,
		      const char * const            *shaper_list)
{
  hb_shape_plan_t *shape_plan;

  if (unlikely (!face))
    face = hb_face_get_empty ();
  if (unlikely (!props || hb_object_is_inert (face)))
    return hb_shape_plan_get_empty ();
  if (!(shape_plan = hb_object_create<hb_shape_plan_t> ()))
    return hb_shape_plan_get_empty ();

  hb_face_make_immutable (face);

  /* Plan! */

  return shape_plan;
}

hb_shape_plan_t *
hb_shape_plan_get_empty (void)
{
  static const hb_shape_plan_t _hb_shape_plan_nil = {
    HB_OBJECT_HEADER_STATIC,
  };

  return const_cast<hb_shape_plan_t *> (&_hb_shape_plan_nil);
}

hb_shape_plan_t *
hb_shape_plan_reference (hb_shape_plan_t *shape_plan)
{
  return hb_object_reference (shape_plan);
}

void
hb_shape_plan_destroy (hb_shape_plan_t *shape_plan)
{
  if (!hb_object_destroy (shape_plan)) return;

#define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_DESTROY(shaper, shape_plan);
#include "hb-shaper-list.hh"
#undef HB_SHAPER_IMPLEMENT

  free (shape_plan);
}