1 files changed, 39 insertions, 0 deletions
diff --git a/src/script/script-impl.cc b/src/script/script-impl.cc
new file mode 100644
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--- /dev/null
+++ b/src/script/script-impl.cc
@@ -0,0 +1,39 @@
+
+// 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 <string>
+
+#include <fst/script/script-impl.h>
+
+namespace fst {
+namespace script {
+
+//
+// Utility function for checking that arc types match.
+//
+bool ArcTypesMatch(const FstClass &a, const FstClass &b,
+                   const string &op_name) {
+  if (a.ArcType() != b.ArcType()) {
+    LOG(ERROR) << "FSTs with non-matching arc types passed to " << op_name
+               << ":\n\t" << a.ArcType() << " and " << b.ArcType();
+    return false;
+  } else {
+    return true;
+  }
+}
+
+}  // namespace script
+}  // namespace fst