kc3-lang/harfbuzz/src/OT/Layout/GPOS/PosLookup.hh

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• Hash : 3fbf2dec
  Author :
  Date : 2022-06-28T23:55:32
  

  [reorg] Move OT::Layout::GPOS_impl::GPOS to OT::Layout::GPOS.
  

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• src/OT/Layout/GPOS/PosLookup.hh

• #ifndef OT_LAYOUT_GPOS_POSLOOKUP_HH
  #define OT_LAYOUT_GPOS_POSLOOKUP_HH
  
  #include "PosLookupSubTable.hh"
  #include "../../../hb-ot-layout-common.hh"
  
  namespace OT {
  namespace Layout {
  namespace GPOS_impl {
  
  struct PosLookup : Lookup
  {
    using SubTable = PosLookupSubTable;
  
    const SubTable& get_subtable (unsigned int i) const
    { return Lookup::get_subtable<SubTable> (i); }
  
    bool is_reverse () const
    {
      return false;
    }
  
    bool apply (hb_ot_apply_context_t *c) const
    {
      TRACE_APPLY (this);
      return_trace (dispatch (c));
    }
  
    bool intersects (const hb_set_t *glyphs) const
    {
      hb_intersects_context_t c (glyphs);
      return dispatch (&c);
    }
  
    hb_collect_glyphs_context_t::return_t collect_glyphs (hb_collect_glyphs_context_t *c) const
    { return dispatch (c); }
  
    hb_closure_lookups_context_t::return_t closure_lookups (hb_closure_lookups_context_t *c, unsigned this_index) const
    {
      if (c->is_lookup_visited (this_index))
        return hb_closure_lookups_context_t::default_return_value ();
  
      c->set_lookup_visited (this_index);
      if (!intersects (c->glyphs))
      {
        c->set_lookup_inactive (this_index);
        return hb_closure_lookups_context_t::default_return_value ();
      }
  
      hb_closure_lookups_context_t::return_t ret = dispatch (c);
      return ret;
    }
  
    template <typename set_t>
    void collect_coverage (set_t *glyphs) const
    {
      hb_collect_coverage_context_t<set_t> c (glyphs);
      dispatch (&c);
    }
  
    template <typename context_t>
    static typename context_t::return_t dispatch_recurse_func (context_t *c, unsigned int lookup_index);
  
    template <typename context_t, typename ...Ts>
    typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
    { return Lookup::dispatch<SubTable> (c, std::forward<Ts> (ds)...); }
  
    bool subset (hb_subset_context_t *c) const
    { return Lookup::subset<SubTable> (c); }
  
    bool sanitize (hb_sanitize_context_t *c) const
    { return Lookup::sanitize<SubTable> (c); }
  };
  
  }
  }
  }
  
  #endif  /* OT_LAYOUT_GPOS_POSLOOKUP_HH */
  

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