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      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 (at) google.com (Jake Ratkiewicz)
     16 
     17 #include <fst/script/fst-class.h>
     18 #include <fst/script/script-impl.h>
     19 #include <fst/script/replace.h>
     20 
     21 namespace fst {
     22 namespace script {
     23 
     24 void Replace(const vector<pair<int64, const FstClass *> > &tuples,
     25              MutableFstClass *ofst, const int64 &root,
     26              bool epsilon_on_replace) {
     27   for (unsigned i = 0; i < tuples.size() - 1; ++i) {
     28     if (!ArcTypesMatch(*tuples[i].second, *tuples[i+1].second, "Replace")) {
     29       return;
     30     }
     31   }
     32 
     33   if (!ArcTypesMatch(*tuples[0].second, *ofst, "Replace")) return;
     34 
     35   ReplaceArgs args(tuples, ofst, root, epsilon_on_replace);
     36 
     37   Apply<Operation<ReplaceArgs> >("Replace", ofst->ArcType(), &args);
     38 }
     39 
     40 REGISTER_FST_OPERATION(Replace, StdArc, ReplaceArgs);
     41 REGISTER_FST_OPERATION(Replace, LogArc, ReplaceArgs);
     42 REGISTER_FST_OPERATION(Replace, Log64Arc, ReplaceArgs);
     43 
     44 }  // namespace script
     45 }  // namespace fst
     46