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// map.h
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Copyright 2005-2010 Google, Inc.
// Author: riley@google.com (Michael Riley)
//
// \file
// Compatability file for old-style Map() functions and MapFst class
// that have been renamed to ArcMap (cf. StateMap).
#ifndef FST_LIB_MAP_H__
#define FST_LIB_MAP_H__
#include <fst/arc-map.h>
namespace fst {
template<class A, class C>
void Map(MutableFst<A> *fst, C* mapper) {
ArcMap(fst, mapper);
}
template<class A, class C>
void Map(MutableFst<A> *fst, C mapper) {
ArcMap(fst, mapper);
}
template<class A, class B, class C>
void Map(const Fst<A> &ifst, MutableFst<B> *ofst, C* mapper) {
ArcMap(ifst, ofst, mapper);
}
template<class A, class B, class C>
void Map(const Fst<A> &ifst, MutableFst<B> *ofst, C mapper) {
ArcMap(ifst, ofst, mapper);
}
typedef ArcMapFstOptions MapFstOptions;
template <class A, class B, class C>
class MapFst : public ArcMapFst<A, B, C> {
public:
typedef B Arc;
typedef typename B::Weight Weight;
typedef typename B::StateId StateId;
typedef CacheState<B> State;
MapFst(const Fst<A> &fst, const C &mapper, const MapFstOptions& opts)
: ArcMapFst<A, B, C>(fst, mapper, opts) {}
MapFst(const Fst<A> &fst, C* mapper, const MapFstOptions& opts)
: ArcMapFst<A, B, C>(fst, mapper, opts) {}
MapFst(const Fst<A> &fst, const C &mapper)
: ArcMapFst<A, B, C>(fst, mapper) {}
MapFst(const Fst<A> &fst, C* mapper) : ArcMapFst<A, B, C>(fst, mapper) {}
// See Fst<>::Copy() for doc.
MapFst(const ArcMapFst<A, B, C> &fst, bool safe = false)
: ArcMapFst<A, B, C>(fst, safe) {}
// Get a copy of this MapFst. See Fst<>::Copy() for further doc.
virtual MapFst<A, B, C> *Copy(bool safe = false) const {
return new MapFst(*this, safe);
}
};
// Specialization for MapFst.
template <class A, class B, class C>
class StateIterator< MapFst<A, B, C> >
: public StateIterator< ArcMapFst<A, B, C> > {
public:
explicit StateIterator(const ArcMapFst<A, B, C> &fst)
: StateIterator< ArcMapFst<A, B, C> >(fst) {}
};
// Specialization for MapFst.
template <class A, class B, class C>
class ArcIterator< MapFst<A, B, C> >
: public ArcIterator< ArcMapFst<A, B, C> > {
public:
ArcIterator(const ArcMapFst<A, B, C> &fst, typename A::StateId s)
: ArcIterator< ArcMapFst<A, B, C> >(fst, s) {}
};
template <class A>
struct IdentityMapper {
typedef A FromArc;
typedef A ToArc;
A operator()(const A &arc) const { return arc; }
MapFinalAction FinalAction() const { return MAP_NO_SUPERFINAL; }
MapSymbolsAction InputSymbolsAction() const { return MAP_COPY_SYMBOLS; }
MapSymbolsAction OutputSymbolsAction() const { return MAP_COPY_SYMBOLS;}
uint64 Properties(uint64 props) const { return props; }
};
} // namespace fst
#endif // FST_LIB_MAP_H__
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