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comparison mupdf-source/thirdparty/harfbuzz/src/OT/Layout/GSUB/LigatureSet.hh @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 #ifndef OT_LAYOUT_GSUB_LIGATURESET_HH
2 #define OT_LAYOUT_GSUB_LIGATURESET_HH
3
4 #include "Common.hh"
5 #include "Ligature.hh"
6
7 namespace OT {
8 namespace Layout {
9 namespace GSUB_impl {
10
11 template <typename Types>
12 struct LigatureSet
13 {
14 protected:
15 Array16OfOffset16To<Ligature<Types>>
16 ligature; /* Array LigatureSet tables
17 * ordered by preference */
18 public:
19 DEFINE_SIZE_ARRAY (2, ligature);
20
21 bool sanitize (hb_sanitize_context_t *c) const
22 {
23 TRACE_SANITIZE (this);
24 return_trace (ligature.sanitize (c, this));
25 }
26
27 bool intersects (const hb_set_t *glyphs) const
28 {
29 return
30 + hb_iter (ligature)
31 | hb_map (hb_add (this))
32 | hb_map ([glyphs] (const Ligature<Types> &_) { return _.intersects (glyphs); })
33 | hb_any
34 ;
35 }
36
37 void closure (hb_closure_context_t *c) const
38 {
39 + hb_iter (ligature)
40 | hb_map (hb_add (this))
41 | hb_apply ([c] (const Ligature<Types> &_) { _.closure (c); })
42 ;
43 }
44
45 void collect_glyphs (hb_collect_glyphs_context_t *c) const
46 {
47 + hb_iter (ligature)
48 | hb_map (hb_add (this))
49 | hb_apply ([c] (const Ligature<Types> &_) { _.collect_glyphs (c); })
50 ;
51 }
52
53 bool would_apply (hb_would_apply_context_t *c) const
54 {
55 return
56 + hb_iter (ligature)
57 | hb_map (hb_add (this))
58 | hb_map ([c] (const Ligature<Types> &_) { return _.would_apply (c); })
59 | hb_any
60 ;
61 }
62
63 bool apply (hb_ot_apply_context_t *c) const
64 {
65 TRACE_APPLY (this);
66 unsigned int num_ligs = ligature.len;
67 for (unsigned int i = 0; i < num_ligs; i++)
68 {
69 const auto &lig = this+ligature[i];
70 if (lig.apply (c)) return_trace (true);
71 }
72
73 return_trace (false);
74 }
75
76 bool serialize (hb_serialize_context_t *c,
77 hb_array_t<const HBGlyphID16> ligatures,
78 hb_array_t<const unsigned int> component_count_list,
79 hb_array_t<const HBGlyphID16> &component_list /* Starting from second for each ligature */)
80 {
81 TRACE_SERIALIZE (this);
82 if (unlikely (!c->extend_min (this))) return_trace (false);
83 if (unlikely (!ligature.serialize (c, ligatures.length))) return_trace (false);
84 for (unsigned int i = 0; i < ligatures.length; i++)
85 {
86 unsigned int component_count = (unsigned) hb_max ((int) component_count_list[i] - 1, 0);
87 if (unlikely (!ligature[i].serialize_serialize (c,
88 ligatures[i],
89 component_list.sub_array (0, component_count))))
90 return_trace (false);
91 component_list += component_count;
92 }
93 return_trace (true);
94 }
95
96 bool subset (hb_subset_context_t *c, unsigned coverage_idx) const
97 {
98 TRACE_SUBSET (this);
99 auto *out = c->serializer->start_embed (*this);
100 if (unlikely (!c->serializer->extend_min (out))) return_trace (false);
101
102 + hb_iter (ligature)
103 | hb_filter (subset_offset_array (c, out->ligature, this, coverage_idx))
104 | hb_drain
105 ;
106
107 if (bool (out->ligature))
108 // Ensure Coverage table is always packed after this.
109 c->serializer->add_virtual_link (coverage_idx);
110
111 return_trace (bool (out->ligature));
112 }
113 };
114
115 }
116 }
117 }
118
119 #endif /* OT_LAYOUT_GSUB_LIGATURESET_HH */