Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/harfbuzz/src/OT/Layout/GSUB/SubstLookupSubTable.hh @ 31:baeb8bdeff3a

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Fortify sources using _FORTIFY_SOURCE=3 and also apply -fno-delete-null-pointer-checks. See: https://github.com/ossf/wg-best-practices-os-developers/issues/659.
author Franz Glasner <fzglas.hg@dom66.de>
date Sun, 21 Sep 2025 13:11:30 +0200
parents b50eed0cc0ef
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1 #ifndef OT_LAYOUT_GSUB_SUBSTLOOKUPSUBTABLE_HH
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2 #define OT_LAYOUT_GSUB_SUBSTLOOKUPSUBTABLE_HH
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4 #include "Common.hh"
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5 #include "SingleSubst.hh"
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6 #include "MultipleSubst.hh"
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7 #include "AlternateSubst.hh"
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8 #include "LigatureSubst.hh"
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9 #include "ContextSubst.hh"
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10 #include "ChainContextSubst.hh"
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11 #include "ExtensionSubst.hh"
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12 #include "ReverseChainSingleSubst.hh"
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14 namespace OT {
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15 namespace Layout {
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16 namespace GSUB_impl {
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18 struct SubstLookupSubTable
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19 {
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20 friend struct ::OT::Lookup;
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21 friend struct SubstLookup;
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23 protected:
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24 union {
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25 SingleSubst single;
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26 MultipleSubst multiple;
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27 AlternateSubst alternate;
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28 LigatureSubst ligature;
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29 ContextSubst context;
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30 ChainContextSubst chainContext;
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31 ExtensionSubst extension;
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32 ReverseChainSingleSubst reverseChainContextSingle;
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33 } u;
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34 public:
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35 DEFINE_SIZE_MIN (0);
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37 enum Type {
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38 Single = 1,
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39 Multiple = 2,
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40 Alternate = 3,
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41 Ligature = 4,
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42 Context = 5,
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43 ChainContext = 6,
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44 Extension = 7,
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45 ReverseChainSingle = 8
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46 };
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48 template <typename context_t, typename ...Ts>
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49 typename context_t::return_t dispatch (context_t *c, unsigned int lookup_type, Ts&&... ds) const
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50 {
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51 TRACE_DISPATCH (this, lookup_type);
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52 switch (lookup_type) {
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53 case Single: return_trace (u.single.dispatch (c, std::forward<Ts> (ds)...));
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54 case Multiple: return_trace (u.multiple.dispatch (c, std::forward<Ts> (ds)...));
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55 case Alternate: return_trace (u.alternate.dispatch (c, std::forward<Ts> (ds)...));
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56 case Ligature: return_trace (u.ligature.dispatch (c, std::forward<Ts> (ds)...));
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57 case Context: return_trace (u.context.dispatch (c, std::forward<Ts> (ds)...));
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58 case ChainContext: return_trace (u.chainContext.dispatch (c, std::forward<Ts> (ds)...));
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59 case Extension: return_trace (u.extension.dispatch (c, std::forward<Ts> (ds)...));
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60 case ReverseChainSingle: return_trace (u.reverseChainContextSingle.dispatch (c, std::forward<Ts> (ds)...));
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61 default: return_trace (c->default_return_value ());
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62 }
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63 }
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65 bool intersects (const hb_set_t *glyphs, unsigned int lookup_type) const
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66 {
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67 hb_intersects_context_t c (glyphs);
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68 return dispatch (&c, lookup_type);
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69 }
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70 };
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73 }
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74 }
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75 }
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77 #endif /* HB_OT_LAYOUT_GSUB_SUBSTLOOKUPSUBTABLE_HH */