Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/src/OT/Layout/GSUB/AlternateSubst.hh @ 40:aa33339d6b8a upstream

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ADD: MuPDF v1.26.10: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.5.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 11:31:38 +0200
parents b50eed0cc0ef
children
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1 #ifndef OT_LAYOUT_GSUB_ALTERNATESUBST_HH
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2 #define OT_LAYOUT_GSUB_ALTERNATESUBST_HH
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3
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4 #include "AlternateSubstFormat1.hh"
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5 #include "Common.hh"
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7 namespace OT {
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8 namespace Layout {
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9 namespace GSUB_impl {
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11 struct AlternateSubst
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12 {
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13 protected:
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14 union {
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15 HBUINT16 format; /* Format identifier */
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16 AlternateSubstFormat1_2<SmallTypes> format1;
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17 #ifndef HB_NO_BEYOND_64K
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18 AlternateSubstFormat1_2<MediumTypes> format2;
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19 #endif
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20 } u;
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21 public:
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23 template <typename context_t, typename ...Ts>
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24 typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
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25 {
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26 TRACE_DISPATCH (this, u.format);
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27 if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ());
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28 switch (u.format) {
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29 case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...));
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30 #ifndef HB_NO_BEYOND_64K
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31 case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...));
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32 #endif
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33 default:return_trace (c->default_return_value ());
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34 }
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35 }
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37 /* TODO This function is unused and not updated to 24bit GIDs. Should be done by using
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38 * iterators. While at it perhaps using iterator of arrays of hb_codepoint_t instead. */
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39 bool serialize (hb_serialize_context_t *c,
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40 hb_sorted_array_t<const HBGlyphID16> glyphs,
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41 hb_array_t<const unsigned int> alternate_len_list,
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42 hb_array_t<const HBGlyphID16> alternate_glyphs_list)
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43 {
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44 TRACE_SERIALIZE (this);
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45 if (unlikely (!c->extend_min (u.format))) return_trace (false);
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46 unsigned int format = 1;
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47 u.format = format;
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48 switch (u.format) {
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49 case 1: return_trace (u.format1.serialize (c, glyphs, alternate_len_list, alternate_glyphs_list));
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50 default:return_trace (false);
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51 }
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52 }
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54 /* TODO subset() should choose format. */
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56 };
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58 }
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59 }
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60 }
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62 #endif /* OT_LAYOUT_GSUB_ALTERNATESUBST_HH */