1 files changed, 70 insertions, 0 deletions
diff --git a/tensorflow/core/util/proto/proto_utils.cc b/tensorflow/core/util/proto/proto_utils.cc
new file mode 100644
index 0000000000..201f05a129
--- /dev/null
+++ b/tensorflow/core/util/proto/proto_utils.cc
@@ -0,0 +1,70 @@
+/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.
+
+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.
+==============================================================================*/
+
+#include "tensorflow/core/framework/types.h"
+#include "tensorflow/core/platform/protobuf.h"
+
+#include "tensorflow/core/util/proto/proto_utils.h"
+
+namespace tensorflow {
+namespace proto_utils {
+
+using tensorflow::protobuf::FieldDescriptor;
+using tensorflow::protobuf::internal::WireFormatLite;
+
+bool IsCompatibleType(FieldDescriptor::Type field_type, DataType dtype) {
+  switch (field_type) {
+    case WireFormatLite::TYPE_DOUBLE:
+      return dtype == tensorflow::DT_DOUBLE;
+    case WireFormatLite::TYPE_FLOAT:
+      return dtype == tensorflow::DT_FLOAT || dtype == tensorflow::DT_DOUBLE;
+    case WireFormatLite::TYPE_INT64:
+      return dtype == tensorflow::DT_INT64;
+    case WireFormatLite::TYPE_UINT64:
+      return dtype == tensorflow::DT_UINT64;
+    case WireFormatLite::TYPE_INT32:
+      return dtype == tensorflow::DT_INT32 || dtype == tensorflow::DT_INT64;
+    case WireFormatLite::TYPE_FIXED64:
+      return dtype == tensorflow::DT_UINT64;
+    case WireFormatLite::TYPE_FIXED32:
+      return dtype == tensorflow::DT_UINT32 || dtype == tensorflow::DT_UINT64;
+    case WireFormatLite::TYPE_BOOL:
+      return dtype == tensorflow::DT_BOOL;
+    case WireFormatLite::TYPE_STRING:
+      return dtype == tensorflow::DT_STRING;
+    case WireFormatLite::TYPE_GROUP:
+      return dtype == tensorflow::DT_STRING;
+    case WireFormatLite::TYPE_MESSAGE:
+      return dtype == tensorflow::DT_STRING;
+    case WireFormatLite::TYPE_BYTES:
+      return dtype == tensorflow::DT_STRING;
+    case WireFormatLite::TYPE_UINT32:
+      return dtype == tensorflow::DT_UINT32 || dtype == tensorflow::DT_UINT64;
+    case WireFormatLite::TYPE_ENUM:
+      return dtype == tensorflow::DT_INT32;
+    case WireFormatLite::TYPE_SFIXED32:
+      return dtype == tensorflow::DT_INT32 || dtype == tensorflow::DT_INT64;
+    case WireFormatLite::TYPE_SFIXED64:
+      return dtype == tensorflow::DT_INT64;
+    case WireFormatLite::TYPE_SINT32:
+      return dtype == tensorflow::DT_INT32 || dtype == tensorflow::DT_INT64;
+    case WireFormatLite::TYPE_SINT64:
+      return dtype == tensorflow::DT_INT64;
+      // default: intentionally omitted in order to enable static checking.
+  }
+}
+
+}  // namespace proto_utils
+}  // namespace tensorflow