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/*
* Copyright © 2007,2008,2009,2010 Red Hat, Inc.
* Copyright © 2010,2012,2013 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.
*
* Red Hat Author(s): Behdad Esfahbod
* Google Author(s): Behdad Esfahbod
*/
#ifndef HB_OT_LAYOUT_GSUB_TABLE_HH
#define HB_OT_LAYOUT_GSUB_TABLE_HH
#include "OT/Layout/GSUB/GSUB.hh"
namespace OT {
namespace Layout {
namespace GSUB_impl {
// TODO(garretrieger): Move into the new layout directory.
/* Out-of-class implementation for methods recursing */
#ifndef HB_NO_OT_LAYOUT
/*static*/ inline bool ExtensionSubst::is_reverse () const
{
return SubstLookup::lookup_type_is_reverse (get_type ());
}
template <typename context_t>
/*static*/ typename context_t::return_t SubstLookup::dispatch_recurse_func (context_t *c, unsigned int lookup_index)
{
const SubstLookup &l = c->face->table.GSUB.get_relaxed ()->table->get_lookup (lookup_index);
return l.dispatch (c);
}
/*static*/ typename hb_closure_context_t::return_t SubstLookup::closure_glyphs_recurse_func (hb_closure_context_t *c, unsigned lookup_index, hb_set_t *covered_seq_indices, unsigned seq_index, unsigned end_index)
{
const SubstLookup &l = c->face->table.GSUB.get_relaxed ()->table->get_lookup (lookup_index);
if (l.may_have_non_1to1 ())
hb_set_add_range (covered_seq_indices, seq_index, end_index);
return l.dispatch (c);
}
template <>
inline hb_closure_lookups_context_t::return_t
SubstLookup::dispatch_recurse_func<hb_closure_lookups_context_t> (hb_closure_lookups_context_t *c, unsigned this_index)
{
const SubstLookup &l = c->face->table.GSUB.get_relaxed ()->table->get_lookup (this_index);
return l.closure_lookups (c, this_index);
}
template <>
inline bool SubstLookup::dispatch_recurse_func<hb_ot_apply_context_t> (hb_ot_apply_context_t *c, unsigned int lookup_index)
{
auto *gsub = c->face->table.GSUB.get_relaxed ();
const SubstLookup &l = gsub->table->get_lookup (lookup_index);
unsigned int saved_lookup_props = c->lookup_props;
unsigned int saved_lookup_index = c->lookup_index;
c->set_lookup_index (lookup_index);
c->set_lookup_props (l.get_props ());
bool ret = false;
auto *accel = gsub->get_accel (lookup_index);
ret = accel && accel->apply (c, l.get_subtable_count (), false);
c->set_lookup_index (saved_lookup_index);
c->set_lookup_props (saved_lookup_props);
return ret;
}
#endif
} /* namespace GSUB_impl */
} /* namespace Layout */
} /* namespace OT */
#endif /* HB_OT_LAYOUT_GSUB_TABLE_HH */