Merge pull request #3428 from wangkuiyi/add_operatorbase_accessors

Add OperatorBase accessors

paddle/framework/operator.h

@@ -95,16 +95,21 @@ class OperatorBase {
 
   //! Get a input with argument's name described in `op_proto`
   const std::string& Input(const std::string& name) const;
-
   //! Get a input which has multiple variables.
   //! TODO add a vector_view to prevent memory copy.
   std::vector<std::string> Inputs(const std::string& name) const;
+
   //! Get a output with argument's name described in `op_proto`
   const std::string& Output(const std::string& name) const;
   //! Get an output which has multiple variables.
   //! TODO add a vector_view to prevent memory copy.
   std::vector<std::string> Outputs(const std::string& name) const;
 
+  const std::string Type() const { return type_; }
+  const std::vector<std::string> Inputs() const { return inputs_; }
+  const std::vector<std::string> Outputs() const { return outputs_; }
+  const AttributeMap& Attrs() const { return attrs_; }
+
  public:
   std::string type_;
   // NOTE: in case of OpGrad, inputs_ contains: