fix failing build of operator overloading

src/descriptor/tensor.cpp

@@ -15,28 +15,33 @@
 #include "descriptor/tensor.hpp"
 #include "node.hpp"
 
-using namespace ngraph;
-using namespace descriptor;
-
-Tensor::Tensor(const element::Type& element_type, PrimaryTensorView* primary_tensor_view,
-    const Node* parent, size_t value_index)
-    : m_element_type(element_type)
-    , m_primary_tensor_view(primary_tensor_view)
-    , m_is_output{false}
-    , m_is_input{parent->is_parameter()}
-    , m_is_persistent{false}
-    , m_name{parent->get_node_id()+"_"+std::to_string(value_index)}
-    , m_next_view_id{0}
+namespace ngraph
 {
-}
+    namespace descriptor
+    {
+        Tensor::Tensor(const element::Type& element_type,
+                       PrimaryTensorView*   primary_tensor_view,
+                       const Node*          parent,
+                       size_t               value_index)
+            : m_element_type(element_type)
+            , m_primary_tensor_view(primary_tensor_view)
+            , m_is_output{false}
+            , m_is_input{parent->is_parameter()}
+            , m_is_persistent{false}
+            , m_name{parent->get_node_id() + "_" + std::to_string(value_index)}
+            , m_next_view_id{0}
+        {
+        }
 
-std::string Tensor::get_next_view_name()
-{
-    return m_name + "_TV" + std::to_string(m_next_view_id++);
-}
+        std::string Tensor::get_next_view_name()
+        {
+            return m_name + "_TV" + std::to_string(m_next_view_id++);
+        }
 
-std::ostream& ngraph::descriptor::operator<<(std::ostream& out, const Tensor& tensor)
-{
-    out << "Tensor(" << tensor.get_name() << ")";
-    return out;
+        std::ostream& operator<<(std::ostream& out, const Tensor& tensor)
+        {
+            out << "Tensor(" << tensor.get_name() << ")";
+            return out;
+        }
+    }
 }

src/descriptor/tensor.hpp

@@ -14,9 +14,9 @@
 
 #pragma once
 
+#include <iostream>
 #include <memory>
 #include <vector>
-#include <iostream>
 
 namespace ngraph
 {
@@ -40,19 +40,18 @@ namespace ngraph
             Tensor(const Tensor&) = delete;
             Tensor& operator=(const Tensor&) = delete;
 
-            Tensor(const element::Type& element_type, PrimaryTensorView* tensor_view,
-                const Node* parent, size_t value_index);
+            Tensor(const element::Type& element_type,
+                   PrimaryTensorView*   tensor_view,
+                   const Node*          parent,
+                   size_t               value_index);
 
             std::string get_next_view_name();
 
         public:
-            bool is_output() const { return m_is_output; }
-            bool is_input() const { return m_is_input; }
-            bool is_persistent() const { return m_is_persistent; }
+            bool               is_output() const { return m_is_output; }
+            bool               is_input() const { return m_is_input; }
+            bool               is_persistent() const { return m_is_persistent; }
             const std::string& get_name() const { return m_name; }
-
-            friend std::ostream& operator<<(std::ostream&, const Tensor&);
-
         protected:
             const element::Type& m_element_type;
             PrimaryTensorView*   m_primary_tensor_view;
@@ -62,5 +61,7 @@ namespace ngraph
             std::string          m_name;
             size_t               m_next_view_id;
         };
+
+        std::ostream& operator<<(std::ostream&, const Tensor&);
     }
 }