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path: root/thirdparty/harfbuzz/src/OT/Layout/GPOS/PairPos.hh
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#ifndef OT_LAYOUT_GPOS_PAIRPOS_HH
#define OT_LAYOUT_GPOS_PAIRPOS_HH

#include "PairPosFormat1.hh"
#include "PairPosFormat2.hh"

namespace OT {
namespace Layout {
namespace GPOS_impl {

struct PairPos
{
  protected:
  union {
  HBUINT16              format;         /* Format identifier */
  PairPosFormat1        format1;
  PairPosFormat2        format2;
  } u;

  public:
  template <typename context_t, typename ...Ts>
  typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
  {
    TRACE_DISPATCH (this, u.format);
    if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ());
    switch (u.format) {
    case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...));
    case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...));
    default:return_trace (c->default_return_value ());
    }
  }
};

}
}
}

#endif  // OT_LAYOUT_GPOS_PAIRPOS_HH