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#ifndef FF_FSA_H
#define FF_FSA_H
#include <stdint.h> //C99
#include <string>
#include "ff.h"
#include "sparse_vector.h"
#include "value_array.h"
#include "tdict.h"
typedef ValueArray<uint8_t> Bytes;
/*
*/
struct FsaFeatureFunction {
std::string name;
// state for backoff
// scan
// heuristic
// all strings x of this length must end in the same state
virtual int MarkovOrder() const {
return 0;
}
};
// regular bottom up scorer from Fsa feature
template <class Impl>
struct FeatureFunctionFromFsa : public FeatureFunction {
Impl& d() { return static_cast<Impl&>(*this); }
Impl const& d() { return static_cast<Impl const&>(*this); }
FeatureFunctionFromFsa() { }
Init() {
name=d().name;
SetStateSize(sizeof(WordID)*2*MarkovOrder
} // can't do this in constructor because we come before d() in order
virtual Features Features() const { return d().Features(); }
};
#endif
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