/usr/include/fst/script/map.h is in libfst-dev 1.5.3+r3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// finite-state transducer library.
#ifndef FST_SCRIPT_MAP_H_
#define FST_SCRIPT_MAP_H_
#include <memory>
#include <fst/arc-map.h>
#include <fst/state-map.h>
#include <fst/script/arg-packs.h>
#include <fst/script/fst-class.h>
#include <fst/script/weight-class.h>
namespace fst {
namespace script {
template <class M>
Fst<typename M::ToArc> *ArcMap(const Fst<typename M::FromArc> &fst,
const M &mapper) {
typedef typename M::ToArc ToArc;
VectorFst<ToArc> *ofst = new VectorFst<ToArc>;
ArcMap(fst, ofst, mapper);
return ofst;
}
template <class M>
Fst<typename M::ToArc> *StateMap(const Fst<typename M::FromArc> &fst,
const M &mapper) {
typedef typename M::ToArc ToArc;
VectorFst<ToArc> *ofst = new VectorFst<ToArc>;
StateMap(fst, ofst, mapper);
return ofst;
}
enum MapType {
ARC_SUM_MAPPER,
IDENTITY_MAPPER,
INPUT_EPSILON_MAPPER,
INVERT_MAPPER,
OUTPUT_EPSILON_MAPPER,
PLUS_MAPPER,
QUANTIZE_MAPPER,
RMWEIGHT_MAPPER,
SUPERFINAL_MAPPER,
TIMES_MAPPER,
TO_LOG_MAPPER,
TO_LOG64_MAPPER,
TO_STD_MAPPER
};
typedef args::Package<const FstClass &, MapType, float, const WeightClass &>
MapInnerArgs;
typedef args::WithReturnValue<FstClass *, MapInnerArgs> MapArgs;
template <class Arc>
void Map(MapArgs *args) {
const Fst<Arc> &ifst = *(args->args.arg1.GetFst<Arc>());
MapType map_type = args->args.arg2;
float delta = args->args.arg3;
typename Arc::Weight weight_param =
*(args->args.arg4.GetWeight<typename Arc::Weight>());
std::unique_ptr<Fst<Arc>> fst;
std::unique_ptr<Fst<LogArc>> lfst;
std::unique_ptr<Fst<Log64Arc>> l64fst;
std::unique_ptr<Fst<StdArc>> sfst;
if (map_type == ARC_SUM_MAPPER) {
fst.reset(script::StateMap(ifst, ArcSumMapper<Arc>(ifst)));
args->retval = new FstClass(*fst);
} else if (map_type == IDENTITY_MAPPER) {
fst.reset(script::ArcMap(ifst, IdentityArcMapper<Arc>()));
args->retval = new FstClass(*fst);
} else if (map_type == INPUT_EPSILON_MAPPER) {
fst.reset(script::ArcMap(ifst, InputEpsilonMapper<Arc>()));
args->retval = new FstClass(*fst);
} else if (map_type == INVERT_MAPPER) {
fst.reset(script::ArcMap(ifst, InvertWeightMapper<Arc>()));
args->retval = new FstClass(*fst);
} else if (map_type == OUTPUT_EPSILON_MAPPER) {
fst.reset(script::ArcMap(ifst, OutputEpsilonMapper<Arc>()));
args->retval = new FstClass(*fst);
} else if (map_type == PLUS_MAPPER) {
fst.reset(script::ArcMap(ifst, PlusMapper<Arc>(weight_param)));
args->retval = new FstClass(*fst);
} else if (map_type == QUANTIZE_MAPPER) {
fst.reset(script::ArcMap(ifst, QuantizeMapper<Arc>(delta)));
args->retval = new FstClass(*fst);
} else if (map_type == RMWEIGHT_MAPPER) {
fst.reset(script::ArcMap(ifst, RmWeightMapper<Arc>()));
args->retval = new FstClass(*fst);
} else if (map_type == SUPERFINAL_MAPPER) {
fst.reset(script::ArcMap(ifst, SuperFinalMapper<Arc>()));
args->retval = new FstClass(*fst);
} else if (map_type == TIMES_MAPPER) {
fst.reset(script::ArcMap(ifst, TimesMapper<Arc>(weight_param)));
args->retval = new FstClass(*fst);
} else if (map_type == TO_LOG_MAPPER) {
lfst.reset(script::ArcMap(ifst, WeightConvertMapper<Arc, LogArc>()));
args->retval = new FstClass(*lfst);
} else if (map_type == TO_LOG64_MAPPER) {
l64fst.reset(script::ArcMap(ifst, WeightConvertMapper<Arc, Log64Arc>()));
args->retval = new FstClass(*l64fst);
} else if (map_type == TO_STD_MAPPER) {
sfst.reset(script::ArcMap(ifst, WeightConvertMapper<Arc, StdArc>()));
args->retval = new FstClass(*sfst);
} else {
FSTERROR() << "Unknown mapper type: " << map_type;
VectorFst<Arc> *ofst = new VectorFst<Arc>;
ofst->SetProperties(kError, kError);
args->retval = new FstClass(*ofst);
}
}
FstClass *Map(const FstClass &fst, MapType map_type, float delta,
const WeightClass &weight_param);
} // namespace script
} // namespace fst
#endif // FST_SCRIPT_MAP_H_
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