1/*
2 * Copyright © 2007,2008,2009,2010 Red Hat, Inc.
3 * Copyright © 2010,2012,2013 Google, Inc.
4 *
5 * This is part of HarfBuzz, a text shaping library.
6 *
7 * Permission is hereby granted, without written agreement and without
8 * license or royalty fees, to use, copy, modify, and distribute this
9 * software and its documentation for any purpose, provided that the
10 * above copyright notice and the following two paragraphs appear in
11 * all copies of this software.
12 *
13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
17 * DAMAGE.
18 *
19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 *
25 * Red Hat Author(s): Behdad Esfahbod
26 * Google Author(s): Behdad Esfahbod
27 */
28
29#ifndef HB_OT_LAYOUT_GSUB_TABLE_HH
30#define HB_OT_LAYOUT_GSUB_TABLE_HH
31
32#include "OT/Layout/GSUB/GSUB.hh"
33
34namespace OT {
35namespace Layout {
36namespace GSUB_impl {
37
38// TODO(garretrieger): Move into the new layout directory.
39/* Out-of-class implementation for methods recursing */
40
41#ifndef HB_NO_OT_LAYOUT
42/*static*/ inline bool ExtensionSubst::is_reverse () const
43{
44 return SubstLookup::lookup_type_is_reverse (get_type ());
45}
46template <typename context_t>
47/*static*/ typename context_t::return_t SubstLookup::dispatch_recurse_func (context_t *c, unsigned int lookup_index)
48{
49 const SubstLookup &l = c->face->table.GSUB.get_relaxed ()->table->get_lookup (lookup_index);
50 return l.dispatch (c);
51}
52
53/*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)
54{
55 const SubstLookup &l = c->face->table.GSUB.get_relaxed ()->table->get_lookup (lookup_index);
56 if (l.may_have_non_1to1 ())
57 hb_set_add_range (covered_seq_indices, seq_index, end_index);
58 return l.dispatch (c);
59}
60
61template <>
62inline hb_closure_lookups_context_t::return_t
63SubstLookup::dispatch_recurse_func<hb_closure_lookups_context_t> (hb_closure_lookups_context_t *c, unsigned this_index)
64{
65 const SubstLookup &l = c->face->table.GSUB.get_relaxed ()->table->get_lookup (this_index);
66 return l.closure_lookups (c, this_index);
67}
68
69template <>
70inline bool SubstLookup::dispatch_recurse_func<hb_ot_apply_context_t> (hb_ot_apply_context_t *c, unsigned int lookup_index)
71{
72 auto *gsub = c->face->table.GSUB.get_relaxed ();
73 const SubstLookup &l = gsub->table->get_lookup (lookup_index);
74 unsigned int saved_lookup_props = c->lookup_props;
75 unsigned int saved_lookup_index = c->lookup_index;
76 c->set_lookup_index (lookup_index);
77 c->set_lookup_props (l.get_props ());
78
79 bool ret = false;
80 auto *accel = gsub->get_accel (lookup_index);
81 ret = accel && accel->apply (c, l.get_subtable_count (), false);
82
83 c->set_lookup_index (saved_lookup_index);
84 c->set_lookup_props (saved_lookup_props);
85 return ret;
86}
87#endif
88
89} /* namespace GSUB_impl */
90} /* namespace Layout */
91} /* namespace OT */
92
93
94#endif /* HB_OT_LAYOUT_GSUB_TABLE_HH */
95