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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/shortest-distance.h>
     20 
     21 namespace fst {
     22 namespace script {
     23 
     24 // 1
     25 void ShortestDistance(const FstClass &fst, vector<WeightClass> *distance,
     26                       const ShortestDistanceOptions &opts) {
     27   ShortestDistanceArgs1 args(fst, distance, opts);
     28 
     29   Apply<Operation<ShortestDistanceArgs1> >("ShortestDistance", fst.ArcType(),
     30                                            &args);
     31 }
     32 
     33 // 2
     34 void ShortestDistance(const FstClass &ifst, vector<WeightClass> *distance,
     35                       bool reverse, double delta) {
     36   ShortestDistanceArgs2 args(ifst, distance, reverse, delta);
     37 
     38   Apply<Operation<ShortestDistanceArgs2> >("ShortestDistance", ifst.ArcType(),
     39       &args);
     40 }
     41 
     42 // 3
     43 WeightClass ShortestDistance(const FstClass &ifst) {
     44   ShortestDistanceArgs3 args(ifst);
     45 
     46   Apply<Operation<ShortestDistanceArgs3> >("ShortestDistance", ifst.ArcType(),
     47       &args);
     48 
     49   return args.retval;
     50 }
     51 
     52 REGISTER_FST_OPERATION(ShortestDistance, StdArc, ShortestDistanceArgs1);
     53 REGISTER_FST_OPERATION(ShortestDistance, LogArc, ShortestDistanceArgs1);
     54 REGISTER_FST_OPERATION(ShortestDistance, Log64Arc, ShortestDistanceArgs1);
     55 
     56 REGISTER_FST_OPERATION(ShortestDistance, StdArc, ShortestDistanceArgs2);
     57 REGISTER_FST_OPERATION(ShortestDistance, LogArc, ShortestDistanceArgs2);
     58 REGISTER_FST_OPERATION(ShortestDistance, Log64Arc, ShortestDistanceArgs2);
     59 
     60 REGISTER_FST_OPERATION(ShortestDistance, StdArc, ShortestDistanceArgs3);
     61 REGISTER_FST_OPERATION(ShortestDistance, LogArc, ShortestDistanceArgs3);
     62 REGISTER_FST_OPERATION(ShortestDistance, Log64Arc, ShortestDistanceArgs3);
     63 
     64 
     65 }  // namespace script
     66 }  // namespace fst
     67