1 files changed, 91 insertions, 0 deletions
diff --git a/compiler/moco/import/src/Nodes/Pad.cpp b/compiler/moco/import/src/Nodes/Pad.cpp
new file mode 100644
index 000000000..262a68fa0
--- /dev/null
+++ b/compiler/moco/import/src/Nodes/Pad.cpp
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2019 Samsung Electronics Co., Ltd. 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 "moco/Import/Nodes/Pad.h"
+
+#include <moco/IR/Nodes/TFPad.h>
+
+#include <loco.h>
+#include <stdex/Memory.h>
+#include <plier/tf/Convert.h>
+
+namespace
+{
+
+using namespace moco;
+
+/**
+ * @brief GraphUpdate for TF Pad node
+ */
+class TFPadGraphUpdate final : public GraphUpdate
+{
+public:
+  TFPadGraphUpdate(TFPad *node, std::vector<TensorName> names) : _node(node), _names(names) {}
+
+  void input(const SymbolTable *) const override;
+
+private:
+  TFPad *_node;
+  std::vector<TensorName> _names;
+};
+
+void TFPadGraphUpdate::input(const SymbolTable *table) const
+{
+  assert(_names.size() == 2);
+
+  _node->input(table->node(_names[0]));
+  _node->paddings(table->node(_names[1]));
+}
+
+} // namespace
+
+namespace moco
+{
+
+bool PadGraphBuilder::validate(const tensorflow::NodeDef &node) const
+{
+  if (node.input_size() != 2)
+    return false;
+
+  return plier::tf::has_attrs(node, {"T", "Tpaddings"});
+}
+
+void PadGraphBuilder::build(const tensorflow::NodeDef &node, GraphBuilderContext *context) const
+{
+  assert(context != nullptr);
+
+  loco::Graph *graph = context->graph();
+  SymbolTable *tensor_names = context->tensor_names();
+  UpdateQueue *updates = context->updates();
+
+  // creating TF dialect Pad node
+  auto tf_pad = graph->nodes()->create<TFPad>();
+  tf_pad->name(node.name());
+
+  // register string-name to node
+  TensorName output_name(node.name(), 0);
+  tensor_names->enroll(output_name, tf_pad);
+
+  std::vector<TensorName> add_input_names;
+  add_input_names.push_back(TensorName(node.input(0))); // input
+  add_input_names.push_back(TensorName(node.input(1))); // paddings
+
+  // Queue node input update
+  auto tf_pad_update = stdex::make_unique<TFPadGraphUpdate>(tf_pad, add_input_names);
+  updates->enroll(std::move(tf_pad_update));
+}
+
+} // namespace moco