diff options
author | Ted Yin <[email protected]> | 2015-08-14 17:42:26 +0800 |
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committer | Ted Yin <[email protected]> | 2015-08-14 17:42:26 +0800 |
commit | c3cffb58b9921d78753336421b52b9ffdaa5515c (patch) | |
tree | bfea20e97c200cf734021e3756d749c892e658a4 /kaldi_io/src/tools/openfst/include/fst/expanded-fst.h | |
parent | 10cce5f6a5c9e2f8e00d5a2a4d87c9cb7c26bf4c (diff) | |
parent | dfdd17afc2e984ec6c32ea01290f5c76309a456a (diff) |
Merge pull request #2 from yimmon/master
remove needless files
Diffstat (limited to 'kaldi_io/src/tools/openfst/include/fst/expanded-fst.h')
-rw-r--r-- | kaldi_io/src/tools/openfst/include/fst/expanded-fst.h | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/kaldi_io/src/tools/openfst/include/fst/expanded-fst.h b/kaldi_io/src/tools/openfst/include/fst/expanded-fst.h deleted file mode 100644 index 676ceb3..0000000 --- a/kaldi_io/src/tools/openfst/include/fst/expanded-fst.h +++ /dev/null @@ -1,189 +0,0 @@ -// expanded-fst.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: [email protected] (Michael Riley) -// -// \file -// Generic FST augmented with state count - interface class definition. -// - -#ifndef FST_LIB_EXPANDED_FST_H__ -#define FST_LIB_EXPANDED_FST_H__ - -#include <sys/types.h> -#include <string> - -#include <fst/fst.h> - - -namespace fst { - -// A generic FST plus state count. -template <class A> -class ExpandedFst : public Fst<A> { - public: - typedef A Arc; - typedef typename A::StateId StateId; - - virtual StateId NumStates() const = 0; // State count - - // Get a copy of this ExpandedFst. See Fst<>::Copy() for further doc. - virtual ExpandedFst<A> *Copy(bool safe = false) const = 0; - - // Read an ExpandedFst from an input stream; return NULL on error. - static ExpandedFst<A> *Read(istream &strm, const FstReadOptions &opts) { - FstReadOptions ropts(opts); - FstHeader hdr; - if (ropts.header) - hdr = *opts.header; - else { - if (!hdr.Read(strm, opts.source)) - return 0; - ropts.header = &hdr; - } - if (!(hdr.Properties() & kExpanded)) { - LOG(ERROR) << "ExpandedFst::Read: Not an ExpandedFst: " << ropts.source; - return 0; - } - FstRegister<A> *registr = FstRegister<A>::GetRegister(); - const typename FstRegister<A>::Reader reader = - registr->GetReader(hdr.FstType()); - if (!reader) { - LOG(ERROR) << "ExpandedFst::Read: Unknown FST type \"" << hdr.FstType() - << "\" (arc type = \"" << A::Type() - << "\"): " << ropts.source; - return 0; - } - Fst<A> *fst = reader(strm, ropts); - if (!fst) return 0; - return static_cast<ExpandedFst<A> *>(fst); - } - - // Read an ExpandedFst from a file; return NULL on error. - // Empty filename reads from standard input. - static ExpandedFst<A> *Read(const string &filename) { - if (!filename.empty()) { - ifstream strm(filename.c_str(), ifstream::in | ifstream::binary); - if (!strm) { - LOG(ERROR) << "ExpandedFst::Read: Can't open file: " << filename; - return 0; - } - return Read(strm, FstReadOptions(filename)); - } else { - return Read(cin, FstReadOptions("standard input")); - } - } -}; - - -namespace internal { - -// ExpandedFst<A> case - abstract methods. -template <class A> inline -typename A::Weight Final(const ExpandedFst<A> &fst, typename A::StateId s) { - return fst.Final(s); -} - -template <class A> inline -ssize_t NumArcs(const ExpandedFst<A> &fst, typename A::StateId s) { - return fst.NumArcs(s); -} - -template <class A> inline -ssize_t NumInputEpsilons(const ExpandedFst<A> &fst, typename A::StateId s) { - return fst.NumInputEpsilons(s); -} - -template <class A> inline -ssize_t NumOutputEpsilons(const ExpandedFst<A> &fst, typename A::StateId s) { - return fst.NumOutputEpsilons(s); -} - -} // namespace internal - - -// A useful alias when using StdArc. -typedef ExpandedFst<StdArc> StdExpandedFst; - - -// This is a helper class template useful for attaching an ExpandedFst -// interface to its implementation, handling reference counting. It -// delegates to ImplToFst the handling of the Fst interface methods. -template < class I, class F = ExpandedFst<typename I::Arc> > -class ImplToExpandedFst : public ImplToFst<I, F> { - public: - typedef typename I::Arc Arc; - typedef typename Arc::Weight Weight; - typedef typename Arc::StateId StateId; - - using ImplToFst<I, F>::GetImpl; - - virtual StateId NumStates() const { return GetImpl()->NumStates(); } - - protected: - ImplToExpandedFst() : ImplToFst<I, F>() {} - - ImplToExpandedFst(I *impl) : ImplToFst<I, F>(impl) {} - - ImplToExpandedFst(const ImplToExpandedFst<I, F> &fst) - : ImplToFst<I, F>(fst) {} - - ImplToExpandedFst(const ImplToExpandedFst<I, F> &fst, bool safe) - : ImplToFst<I, F>(fst, safe) {} - - // Read FST implementation from a file; return NULL on error. - // Empty filename reads from standard input. - static I *Read(const string &filename) { - if (!filename.empty()) { - ifstream strm(filename.c_str(), ifstream::in | ifstream::binary); - if (!strm) { - LOG(ERROR) << "ExpandedFst::Read: Can't open file: " << filename; - return 0; - } - return I::Read(strm, FstReadOptions(filename)); - } else { - return I::Read(cin, FstReadOptions("standard input")); - } - } - - private: - // Disallow - ImplToExpandedFst<I, F> &operator=(const ImplToExpandedFst<I, F> &fst); - - ImplToExpandedFst<I, F> &operator=(const Fst<Arc> &fst) { - FSTERROR() << "ImplToExpandedFst: Assignment operator disallowed"; - GetImpl()->SetProperties(kError, kError); - return *this; - } -}; - -// Function to return the number of states in an FST, counting them -// if necessary. -template <class Arc> -typename Arc::StateId CountStates(const Fst<Arc> &fst) { - if (fst.Properties(kExpanded, false)) { - const ExpandedFst<Arc> *efst = static_cast<const ExpandedFst<Arc> *>(&fst); - return efst->NumStates(); - } else { - typename Arc::StateId nstates = 0; - for (StateIterator< Fst<Arc> > siter(fst); !siter.Done(); siter.Next()) - ++nstates; - return nstates; - } -} - -} // namespace fst - -#endif // FST_LIB_EXPANDED_FST_H__ |