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#include <fst/script/fst-class.h> 18#include <fst/script/script-impl.h> 19#include <fst/script/difference.h> 20 21namespace fst { 22namespace script { 23 24void Difference(const FstClass &ifst1, const FstClass &ifst2, 25 MutableFstClass *ofst, ComposeFilter compose_filter) { 26 if (!ArcTypesMatch(ifst1, ifst2, "Difference") || 27 !ArcTypesMatch(*ofst, ifst1, "Difference")) return; 28 29 DifferenceArgs1 args(ifst1, ifst2, ofst, compose_filter); 30 Apply<Operation<DifferenceArgs1> >("Difference", ifst1.ArcType(), &args); 31} 32 33void Difference(const FstClass &ifst1, const FstClass &ifst2, 34 MutableFstClass *ofst, const ComposeOptions &copts) { 35 if (!ArcTypesMatch(ifst1, ifst2, "Difference") || 36 !ArcTypesMatch(*ofst, ifst1, "Difference")) return; 37 38 DifferenceArgs2 args(ifst1, ifst2, ofst, copts); 39 Apply<Operation<DifferenceArgs2> >("Difference", ifst1.ArcType(), &args); 40} 41 42REGISTER_FST_OPERATION(Difference, StdArc, DifferenceArgs1); 43REGISTER_FST_OPERATION(Difference, LogArc, DifferenceArgs1); 44REGISTER_FST_OPERATION(Difference, Log64Arc, DifferenceArgs1); 45REGISTER_FST_OPERATION(Difference, StdArc, DifferenceArgs2); 46REGISTER_FST_OPERATION(Difference, LogArc, DifferenceArgs2); 47REGISTER_FST_OPERATION(Difference, Log64Arc, DifferenceArgs2); 48 49} // namespace script 50} // namespace fst 51