Modularize TF Lite interface definitions and reorganize file structure

PiperOrigin-RevId: 212064501

1 files changed, 56 insertions, 0 deletions

diff --git a/tensorflow/contrib/lite/mutable_op_resolver.cc b/tensorflow/contrib/lite/mutable_op_resolver.cc
new file mode 100644
index 0000000000..8ee63d2a02
--- /dev/null
+++ b/tensorflow/contrib/lite/mutable_op_resolver.cc
@@ -0,0 +1,56 @@
+/* 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/contrib/lite/mutable_op_resolver.h"
+
+namespace tflite {
+
+const TfLiteRegistration* MutableOpResolver::FindOp(tflite::BuiltinOperator op,
+                                                    int version) const {
+  auto it = builtins_.find(std::make_pair(op, version));
+  return it != builtins_.end() ? &it->second : nullptr;
+}
+
+const TfLiteRegistration* MutableOpResolver::FindOp(const char* op,
+                                                    int version) const {
+  auto it = custom_ops_.find(std::make_pair(op, version));
+  return it != custom_ops_.end() ? &it->second : nullptr;
+}
+
+void MutableOpResolver::AddBuiltin(tflite::BuiltinOperator op,
+                                   TfLiteRegistration* registration,
+                                   int min_version, int max_version) {
+  for (int version = min_version; version <= max_version; ++version) {
+    TfLiteRegistration new_registration = *registration;
+    new_registration.builtin_code = op;
+    new_registration.version = version;
+    auto op_key = std::make_pair(op, version);
+    builtins_[op_key] = new_registration;
+  }
+}
+
+void MutableOpResolver::AddCustom(const char* name,
+                                  TfLiteRegistration* registration,
+                                  int min_version, int max_version) {
+  for (int version = min_version; version <= max_version; ++version) {
+    TfLiteRegistration new_registration = *registration;
+    new_registration.builtin_code = BuiltinOperator_CUSTOM;
+    new_registration.version = version;
+    auto op_key = std::make_pair(name, version);
+    custom_ops_[op_key] = new_registration;
+  }
+}
+
+}  // namespace tflite