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82 lines
3.0 KiB
82 lines
3.0 KiB
// Copyright 2005-2024 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the 'License');
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an 'AS IS' BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// See www.openfst.org for extensive documentation on this weighted
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// finite-state transducer library.
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#ifndef FST_SCRIPT_RELABEL_H_
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#define FST_SCRIPT_RELABEL_H_
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#include <algorithm>
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#include <cstdint>
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#include <string>
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#include <tuple>
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#include <utility>
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#include <vector>
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#include <fst/mutable-fst.h>
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#include <fst/relabel.h>
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#include <fst/symbol-table.h>
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#include <fst/script/fst-class.h>
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namespace fst {
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namespace script {
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using FstRelabelArgs1 =
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std::tuple<MutableFstClass *, const SymbolTable *, const SymbolTable *,
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const std::string &, bool, const SymbolTable *,
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const SymbolTable *, const std::string &, bool>;
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template <class Arc>
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void Relabel(FstRelabelArgs1 *args) {
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MutableFst<Arc> *ofst = std::get<0>(*args)->GetMutableFst<Arc>();
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Relabel(ofst, std::get<1>(*args), std::get<2>(*args), std::get<3>(*args),
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std::get<4>(*args), std::get<5>(*args), std::get<6>(*args),
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std::get<7>(*args), std::get<8>(*args));
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}
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using FstRelabelArgs2 =
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std::tuple<MutableFstClass *,
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const std::vector<std::pair<int64_t, int64_t>> &,
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const std::vector<std::pair<int64_t, int64_t>> &>;
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template <class Arc>
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void Relabel(FstRelabelArgs2 *args) {
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MutableFst<Arc> *ofst = std::get<0>(*args)->GetMutableFst<Arc>();
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using LabelPair = std::pair<typename Arc::Label, typename Arc::Label>;
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// In case the MutableFstClass::Label is not the same as Arc::Label,
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// make a copy.
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std::vector<LabelPair> typed_ipairs(std::get<1>(*args).size());
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std::copy(std::get<1>(*args).begin(), std::get<1>(*args).end(),
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typed_ipairs.begin());
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std::vector<LabelPair> typed_opairs(std::get<2>(*args).size());
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std::copy(std::get<2>(*args).begin(), std::get<2>(*args).end(),
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typed_opairs.begin());
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Relabel(ofst, typed_ipairs, typed_opairs);
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}
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void Relabel(MutableFstClass *ofst, const SymbolTable *old_isymbols,
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const SymbolTable *new_isymbols,
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const std::string &unknown_isymbol, bool attach_new_isymbols,
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const SymbolTable *old_osymbols, const SymbolTable *new_osymbols,
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const std::string &unknown_osymbol, bool attach_new_osymbols);
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void Relabel(MutableFstClass *ofst,
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const std::vector<std::pair<int64_t, int64_t>> &ipairs,
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const std::vector<std::pair<int64_t, int64_t>> &opairs);
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} // namespace script
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} // namespace fst
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#endif // FST_SCRIPT_RELABEL_H_
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