Add operator Size. (#2067)

src/ngraph/frontend/onnx_import/CMakeLists.txt

@@ -116,6 +116,8 @@ add_library(onnx_import STATIC
         op/shape.cpp
         op/sigmoid.hpp
         op/sin.hpp
+        op/size.cpp
+        op/size.hpp
         op/slice.cpp
         op/slice.hpp
         op/softmax.cpp

src/ngraph/frontend/onnx_import/op/size.cpp

+//*****************************************************************************
+// Copyright 2017-2018 Intel Corporation
+//
+// 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 <cstdint>
+#include <memory>
+#include <vector>
+
+#include "ngraph/node.hpp"
+#include "ngraph/op/constant.hpp"
+#include "ngraph/shape.hpp"
+#include "ngraph/type/element_type.hpp"
+#include "shape.hpp"
+
+namespace ngraph
+{
+    namespace onnx_import
+    {
+        namespace op
+        {
+            namespace set_1
+            {
+                NodeVector size(const Node& node)
+                {
+                    auto data = node.get_ng_inputs().at(0);
+                    std::int64_t tensor_elements_count{
+                        static_cast<std::int64_t>(shape_size(data->get_shape()))};
+
+                    return {std::make_shared<ngraph::op::Constant>(
+                        ngraph::element::i64,
+                        Shape{},
+                        std::vector<std::int64_t>{tensor_elements_count})};
+                }
+
+            } // namespace set_1
+
+        } //namespace op
+
+    } // namespace onnx_import
+
+} // namespace ngraph

src/ngraph/frontend/onnx_import/op/size.hpp

+//*****************************************************************************
+// Copyright 2017-2018 Intel Corporation
+//
+// 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.
+//*****************************************************************************
+
+#pragma once
+
+#include "ngraph/node_vector.hpp"
+
+#include "core/node.hpp"
+
+namespace ngraph
+{
+    namespace onnx_import
+    {
+        namespace op
+        {
+            namespace set_1
+            {
+                NodeVector size(const Node& node);
+
+            } // namespace set_1
+
+        } //namespace op
+
+    } // namespace onnx_import
+
+} // namespace ngraph

src/ngraph/frontend/onnx_import/ops_bridge.cpp

@@ -75,6 +75,7 @@
 #include "op/shape.hpp"
 #include "op/sigmoid.hpp"
 #include "op/sin.hpp"
+#include "op/size.hpp"
 #include "op/slice.hpp"
 #include "op/softmax.hpp"
 #include "op/softplus.hpp"
@@ -211,6 +212,7 @@ namespace ngraph
             REGISTER_OPERATOR("Shape", 1, shape);
             REGISTER_OPERATOR("Sigmoid", 1, sigmoid);
             REGISTER_OPERATOR("Sin", 1, sin);
+            REGISTER_OPERATOR("Size", 1, size);
             REGISTER_OPERATOR("Slice", 1, slice);
             REGISTER_OPERATOR("Softmax", 1, softmax);
             REGISTER_OPERATOR("Softplus", 1, softplus);