/usr/include/fst/script/stateiterator-class.h is in libfst-dev 1.6.3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 | // See www.openfst.org for extensive documentation on this weighted
// finite-state transducer library.
#ifndef FST_SCRIPT_STATEITERATOR_CLASS_H_
#define FST_SCRIPT_STATEITERATOR_CLASS_H_
#include <memory>
#include <fst/fstlib.h>
#include <fst/script/arg-packs.h>
#include <fst/script/fst-class.h>
// Scripting API support for StateIterator.
namespace fst {
namespace script {
// Virtual interface implemented by each concrete StateIteratorImpl<F>.
class StateIteratorImplBase {
public:
virtual bool Done() const = 0;
virtual int64 Value() const = 0;
virtual void Next() = 0;
virtual void Reset() = 0;
virtual ~StateIteratorImplBase() {}
};
// Templated implementation.
template <class Arc>
class StateIteratorClassImpl : public StateIteratorImplBase {
public:
explicit StateIteratorClassImpl(const Fst<Arc> &fst) : siter_(fst) {}
bool Done() const final { return siter_.Done(); }
int64 Value() const final { return siter_.Value(); }
void Next() final { siter_.Next(); }
void Reset() final { siter_.Reset(); }
~StateIteratorClassImpl() override {}
private:
StateIterator<Fst<Arc>> siter_;
};
class StateIteratorClass;
using InitStateIteratorClassArgs =
args::Package<const FstClass &, StateIteratorClass *>;
// Untemplated user-facing class holding a templated pimpl.
class StateIteratorClass {
public:
explicit StateIteratorClass(const FstClass &fst);
template <class Arc>
explicit StateIteratorClass(const Fst<Arc> &fst)
: impl_(new StateIteratorClassImpl<Arc>(fst)) {}
bool Done() const { return impl_->Done(); }
int64 Value() const { return impl_->Value(); }
void Next() { impl_->Next(); }
void Reset() { impl_->Reset(); }
template <class Arc>
friend void InitStateIteratorClass(InitStateIteratorClassArgs *args);
private:
std::unique_ptr<StateIteratorImplBase> impl_;
};
template <class Arc>
void InitStateIteratorClass(InitStateIteratorClassArgs *args) {
const Fst<Arc> &fst = *(args->arg1.GetFst<Arc>());
args->arg2->impl_.reset(new StateIteratorClassImpl<Arc>(fst));
}
} // namespace script
} // namespace fst
#endif // FST_SCRIPT_STATEITERATOR_CLASS_H_
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