handle unsupported ops (#1816)

src/ngraph/cpio.cpp

@@ -152,7 +152,11 @@ cpio::Writer::Writer(const string& filename)
 
 cpio::Writer::~Writer()
 {
-    close();
+    write("TRAILER!!!", nullptr, 0);
+    if (m_my_stream.is_open())
+    {
+        m_my_stream.close();
+    }
 }
 
 void cpio::Writer::open(ostream& out)
@@ -166,15 +170,6 @@ void cpio::Writer::open(const string& filename)
     m_my_stream.open(filename, ios_base::binary | ios_base::out);
 }
 
-void cpio::Writer::close()
-{
-    write("TRAILER!!!", nullptr, 0);
-    if (m_my_stream.is_open())
-    {
-        m_my_stream.close();
-    }
-}
-
 void cpio::Writer::write(const string& record_name, const void* data, uint32_t size_in_bytes)
 {
     if (m_stream)

src/ngraph/cpio.hpp

@@ -88,7 +88,6 @@ public:
 
     void open(std::ostream& out);
     void open(const std::string& filename);
-    void close();
     void write(const std::string& file_name, const void* data, uint32_t size_in_bytes);
 
 private:

src/ngraph/serializer.cpp

@@ -109,6 +109,7 @@ using const_data_callback_t = shared_ptr<Node>(const string&, const element::Typ
 enum class OP_TYPEID
 {
 #include "ngraph/op/op_tbl.hpp"
+    UnknownOp
 };
 #undef NGRAPH_OP
 
@@ -123,7 +124,13 @@ static OP_TYPEID get_typeid(const string& s)
 #include "ngraph/op/op_tbl.hpp"
     };
 #undef NGRAPH_OP
-    return typeid_map.at(s);
+    OP_TYPEID rc = OP_TYPEID::UnknownOp;
+    auto it = typeid_map.find(s);
+    if (it != typeid_map.end())
+    {
+        rc = it->second;
+    }
+    return rc;
 }
 
 template <typename T>
@@ -208,8 +215,6 @@ void ngraph::serialize(ostream& out, shared_ptr<ngraph::Function> func, size_t i
                        },
                        true);
     });
-
-    writer.close();
 }
 
 static string serialize(shared_ptr<ngraph::Function> func, size_t indent, bool binary_constant_data)
@@ -1024,7 +1029,7 @@ static shared_ptr<ngraph::Function>
                 node = make_shared<op::StopGradient>(args[0]);
                 break;
             }
-            default:
+            case OP_TYPEID::UnknownOp:
             {
                 stringstream ss;
                 ss << "unsupported op " << node_op;
@@ -1514,6 +1519,8 @@ static json write(const Node& n, bool binary_constant_data)
         node["compute_max"] = tmp->get_compute_max();
         break;
     }
+    case OP_TYPEID::UnknownOp: { break;
+    }
     }
 #pragma GCC diagnostic pop