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comparison mupdf-source/thirdparty/harfbuzz/src/OT/Layout/GSUB/LigatureSubst.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_LIGATURESUBST_HH
2 #define OT_LAYOUT_GSUB_LIGATURESUBST_HH
3
4 #include "Common.hh"
5 #include "LigatureSubstFormat1.hh"
6
7 namespace OT {
8 namespace Layout {
9 namespace GSUB_impl {
10
11 struct LigatureSubst
12 {
13 protected:
14 union {
15 HBUINT16 format; /* Format identifier */
16 LigatureSubstFormat1_2<SmallTypes> format1;
17 #ifndef HB_NO_BEYOND_64K
18 LigatureSubstFormat1_2<MediumTypes> format2;
19 #endif
20 } u;
21
22 public:
23 template <typename context_t, typename ...Ts>
24 typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
25 {
26 TRACE_DISPATCH (this, u.format);
27 if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ());
28 switch (u.format) {
29 case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...));
30 #ifndef HB_NO_BEYOND_64K
31 case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...));
32 #endif
33 default:return_trace (c->default_return_value ());
34 }
35 }
36
37 /* TODO This function is only used by small GIDs, and not updated to 24bit GIDs. Should
38 * be done by using iterators. While at it perhaps using iterator of arrays of hb_codepoint_t
39 * instead. */
40 bool serialize (hb_serialize_context_t *c,
41 hb_sorted_array_t<const HBGlyphID16> first_glyphs,
42 hb_array_t<const unsigned int> ligature_per_first_glyph_count_list,
43 hb_array_t<const HBGlyphID16> ligatures_list,
44 hb_array_t<const unsigned int> component_count_list,
45 hb_array_t<const HBGlyphID16> component_list /* Starting from second for each ligature */)
46 {
47 TRACE_SERIALIZE (this);
48 if (unlikely (!c->extend_min (u.format))) return_trace (false);
49 unsigned int format = 1;
50 u.format = format;
51 switch (u.format) {
52 case 1: return_trace (u.format1.serialize (c,
53 first_glyphs,
54 ligature_per_first_glyph_count_list,
55 ligatures_list,
56 component_count_list,
57 component_list));
58 default:return_trace (false);
59 }
60 }
61
62 /* TODO subset() should choose format. */
63
64 };
65
66
67 }
68 }
69 }
70
71 #endif /* OT_LAYOUT_GSUB_LIGATURESUBST_HH */