// See www.openfst.org for extensive documentation on this weighted
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// finite-state transducer library.
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#ifndef FST_SCRIPT_PUSH_H_
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#define FST_SCRIPT_PUSH_H_
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#include <tuple>
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#include <fst/push.h>
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#include <fst/script/fst-class.h>
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namespace fst {
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namespace script {
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using PushArgs1 = std::tuple<MutableFstClass *, ReweightType, float, bool>;
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template <class Arc>
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void Push(PushArgs1 *args) {
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MutableFst<Arc> *fst = std::get<0>(*args)->GetMutableFst<Arc>();
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Push(fst, std::get<1>(*args), std::get<2>(*args), std::get<3>(*args));
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}
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using PushArgs2 = std::tuple<const FstClass &, MutableFstClass *, uint32,
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ReweightType, float>;
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template <class Arc>
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void Push(PushArgs2 *args) {
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const Fst<Arc> &ifst = *(std::get<0>(*args).GetFst<Arc>());
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MutableFst<Arc> *ofst = std::get<1>(*args)->GetMutableFst<Arc>();
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switch (std::get<3>(*args)) {
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case REWEIGHT_TO_FINAL: {
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Push<Arc, REWEIGHT_TO_FINAL>(ifst, ofst, std::get<2>(*args),
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std::get<4>(*args));
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return;
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}
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case REWEIGHT_TO_INITIAL: {
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Push<Arc, REWEIGHT_TO_INITIAL>(ifst, ofst, std::get<2>(*args),
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std::get<4>(*args));
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return;
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}
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}
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}
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void Push(MutableFstClass *fst, ReweightType rew_type, float delta = kDelta,
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bool remove_total_weight = false);
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void Push(const FstClass &ifst, MutableFstClass *ofst, uint32 flags,
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ReweightType rew_type, float delta = kDelta);
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} // namespace script
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} // namespace fst
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#endif // FST_SCRIPT_PUSH_H_
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