1
2// Licensed under the Apache License, Version 2.0 (the "License");
3// you may not use this file except in compliance with the License.
4// You may obtain a copy of the License at
5//
6//     http://www.apache.org/licenses/LICENSE-2.0
7//
8// Unless required by applicable law or agreed to in writing, software
9// distributed under the License is distributed on an "AS IS" BASIS,
10// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11// See the License for the specific language governing permissions and
12// limitations under the License.
13//
14// Copyright 2005-2010 Google, Inc.
15// Author: jpr@google.com (Jake Ratkiewicz)
16
17#ifndef FST_SCRIPT_REPLACE_H_
18#define FST_SCRIPT_REPLACE_H_
19
20#include <utility>
21using std::pair; using std::make_pair;
22#include <vector>
23using std::vector;
24
25#include <fst/script/arg-packs.h>
26#include <fst/script/fst-class.h>
27#include <fst/replace.h>
28
29namespace fst {
30namespace script {
31
32typedef args::Package<const vector<pair<int64, const FstClass *> > &,
33                      MutableFstClass *, const int64, bool> ReplaceArgs;
34
35template<class Arc>
36void Replace(ReplaceArgs *args) {
37  // Now that we know the arc type, we construct a vector of
38  // pair<real label, real fst> that the real Replace will use
39  const vector<pair<int64, const FstClass *> >& untyped_tuples =
40      args->arg1;
41
42  vector<pair<typename Arc::Label, const Fst<Arc> *> > fst_tuples(
43      untyped_tuples.size());
44
45  for (unsigned i = 0; i < untyped_tuples.size(); ++i) {
46    fst_tuples[i].first = untyped_tuples[i].first;  // convert label
47    fst_tuples[i].second = untyped_tuples[i].second->GetFst<Arc>();
48  }
49
50  MutableFst<Arc> *ofst = args->arg2->GetMutableFst<Arc>();
51
52  Replace(fst_tuples, ofst, args->arg3, args->arg4);
53}
54
55void Replace(const vector<pair<int64, const FstClass *> > &tuples,
56             MutableFstClass *ofst, const int64 &root,
57             bool epsilon_on_replace = false);
58
59}  // namespace script
60}  // namespace fst
61
62#endif  // FST_SCRIPT_REPLACE_H_
63