1 files changed, 45 insertions, 0 deletions
diff --git a/src/script/replace.cc b/src/script/replace.cc
new file mode 100644
index 0000000..40c09be
--- /dev/null
+++ b/src/script/replace.cc
@@ -0,0 +1,45 @@
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// Copyright 2005-2010 Google, Inc.
+// Author: jpr@google.com (Jake Ratkiewicz)
+
+#include <fst/script/fst-class.h>
+#include <fst/script/script-impl.h>
+#include <fst/script/replace.h>
+
+namespace fst {
+namespace script {
+
+void Replace(const vector<pair<int64, const FstClass *> > &tuples,
+             MutableFstClass *ofst, const int64 &root,
+             bool epsilon_on_replace) {
+  for (unsigned i = 0; i < tuples.size() - 1; ++i) {
+    if (!ArcTypesMatch(*tuples[i].second, *tuples[i+1].second, "Replace")) {
+      return;
+    }
+  }
+
+  if (!ArcTypesMatch(*tuples[0].second, *ofst, "Replace")) return;
+
+  ReplaceArgs args(tuples, ofst, root, epsilon_on_replace);
+
+  Apply<Operation<ReplaceArgs> >("Replace", ofst->ArcType(), &args);
+}
+
+REGISTER_FST_OPERATION(Replace, StdArc, ReplaceArgs);
+REGISTER_FST_OPERATION(Replace, LogArc, ReplaceArgs);
+REGISTER_FST_OPERATION(Replace, Log64Arc, ReplaceArgs);
+
+}  // namespace script
+}  // namespace fst