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>
21 using std::pair; using std::make_pair;
22 #include <vector>
23 using std::vector;
24
25 #include <fst/script/arg-packs.h>
26 #include <fst/script/fst-class.h>
27 #include <fst/replace.h>
28
29 namespace fst {
30 namespace script {
31
32 typedef args::Package<const vector<pair<int64, const FstClass *> > &,
33 MutableFstClass *, const int64, bool> ReplaceArgs;
34
35 template<class Arc>
Replace(ReplaceArgs * args)36 void 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
55 void 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