PosLookup.hh - mozsearch

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#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 */