// See www.openfst.org for extensive documentation on this weighted
  // finite-state transducer library.
  
  #ifndef FST_SCRIPT_DETERMINIZE_H_
  #define FST_SCRIPT_DETERMINIZE_H_
  
  #include <tuple>
  
  #include <fst/determinize.h>
  #include <fst/script/fst-class.h>
  #include <fst/script/weight-class.h>
  
  namespace fst {
  namespace script {
  
  struct DeterminizeOptions {
    const float delta;
    const WeightClass &weight_threshold;
    const int64 state_threshold;
    const int64 subsequential_label;
    const DeterminizeType det_type;
    const bool increment_subsequential_label;
  
    DeterminizeOptions(float delta, const WeightClass &weight_threshold,
                       int64 state_threshold = kNoStateId,
                       int64 subsequential_label = 0,
                       DeterminizeType det_type = DETERMINIZE_FUNCTIONAL,
                       bool increment_subsequential_label = false)
        : delta(delta),
          weight_threshold(weight_threshold),
          state_threshold(state_threshold),
          subsequential_label(subsequential_label),
          det_type(det_type),
          increment_subsequential_label(increment_subsequential_label) {}
  };
  
  using DeterminizeArgs = std::tuple<const FstClass &, MutableFstClass *,
                                     const DeterminizeOptions &>;
  
  template <class Arc>
  void Determinize(DeterminizeArgs *args) {
    using Weight = typename Arc::Weight;
    const Fst<Arc> &ifst = *(std::get<0>(*args).GetFst<Arc>());
    MutableFst<Arc> *ofst = std::get<1>(*args)->GetMutableFst<Arc>();
    const auto &opts = std::get<2>(*args);
    const auto weight_threshold = *(opts.weight_threshold.GetWeight<Weight>());
    const fst::DeterminizeOptions<Arc> detargs(opts.delta, weight_threshold,
        opts.state_threshold, opts.subsequential_label, opts.det_type,
        opts.increment_subsequential_label);
    Determinize(ifst, ofst, detargs);
  }
  
  void Determinize(const FstClass &ifst, MutableFstClass *ofst,
                   const DeterminizeOptions &opts);
  
  }  // namespace script
  }  // namespace fst
  
  #endif  // FST_SCRIPT_DETERMINIZE_H_