add operator << for Packet and TraceContext

src/common/packet.cc

@@ -199,6 +199,12 @@ Packet::Deserialize (Buffer buffer)
   buffer.RemoveAtStart (metadataDeserialized);
 }
 
+std::ostream& operator<< (std::ostream& os, const Packet &packet)
+{
+  packet.Print (os);
+  return os;
+}
+
 
 } // namespace ns3
 

src/common/packet.h

@@ -328,6 +328,8 @@ private:
   static uint32_t m_globalUid;
 };
 
+std::ostream& operator<< (std::ostream& os, const Packet &packet);
+
 /**
  * \defgroup packetperf Packet Performance
  * The current implementation of the byte buffers and tag list is based

src/core/trace-context.cc

@@ -231,6 +231,12 @@ TraceContext::Print (std::ostream &os) const
   } while (true);
 }
 
+std::ostream& operator<< (std::ostream& os, const TraceContext &context)
+{
+  context.Print (os);
+  return os;
+}
+
 }//namespace ns3
 
 #include "test.h"

src/core/trace-context.h

@@ -99,6 +99,8 @@ private:
   } * m_data;
 };
 
+std::ostream& operator<< (std::ostream& os, const TraceContext &context);
+
 }//namespace ns3
 
 namespace ns3 {