TileIdentifier: Add string converters for enums.

Add helpers to convert the enums TileFragHash::TYPE and
TileRawChannelUnit::UNIT to strings.

TileCalorimeter/TileIdentifier/TileIdentifier/TileFragHash.h

 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
 */
 
 
@@ -8,7 +8,8 @@
 
 class TileHWID;
 
-#include <vector> 
+#include <vector>
+#include <string>
 
 /**
 * @class TileFragHash
@@ -52,8 +53,13 @@ class TileFragHash  {
 
   /**return hash type */
   TYPE type() const {return m_type;}
-  
- private:
+
+
+  /** Printable representation of a type. */
+  static std::string typeToString (TYPE type);
+
+
+private:
   /** total number of IDs */
   int m_size;  // total number of IDs
   int m_offset; // different offset for different types of collections

TileCalorimeter/TileIdentifier/TileIdentifier/TileRawChannelUnit.h

 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
 */
 
-#ifndef TILECONDITIONS_TILERAWCHANNELUNIT__H
-#define TILECONDITIONS_TILERAWCHANNELUNIT__H
+#ifndef TILECONDITIONS_TILERAWCHANNELUNIT_H
+#define TILECONDITIONS_TILERAWCHANNELUNIT_H
+
+
+#include <string>
+
 
 class TileRawChannelUnit
 {
@@ -21,6 +25,10 @@ class TileRawChannelUnit
       OnlineOffset             = 4,
       Invalid                  = 99
     };
+
+
+  /** Printable representation of a unit. */
+  static std::string unitToString (UNIT type);
 };
 
 #endif

TileCalorimeter/TileIdentifier/src/TileFragHash.cxx

 /*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
 */
 
 
@@ -78,3 +78,26 @@ int TileFragHash::hash (const ID& id) const
   return m_lookup[id]; 
 }
 
+
+/**
+ * @brief Printable representation of a type.
+ */
+std::string TileFragHash::typeToString (TYPE type)
+{
+  switch (type) {
+#define CASE(X) case TileFragHash::X: return #X
+    CASE(Digitizer);
+    CASE(OptFilterDsp);
+    CASE(OptFilterOffline);
+    CASE(OptFilterDspCompressed);
+    CASE(ManyAmps);
+    CASE(MF);
+    CASE(FitFilter);
+    CASE(FitFilterCool);
+    CASE(FlatFilter);
+    CASE(Beam);
+#undef CASE
+  default: break;
+  };
+  return "UNKNOWN";
+}

TileCalorimeter/TileIdentifier/src/TileRawChannelUnit.cxx

+/*
+ * Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration.
+ */
+
+
+#include "TileIdentifier/TileRawChannelUnit.h"
+
+
+/**
+ * @brief Printable representation of a unit.
+ */
+std::string TileRawChannelUnit::unitToString (UNIT unit)
+{
+  switch (unit) {
+#define CASE(X) case TileRawChannelUnit::X: return #X
+    CASE(ADCcounts);
+    CASE(PicoCoulombs);
+    CASE(CesiumPicoCoulombs);
+    CASE(MegaElectronVolts);
+    CASE(OnlineADCcounts);
+    CASE(OnlinePicoCoulombs);
+    CASE(OnlineCesiumPicoCoulombs);
+    CASE(OnlineMegaElectronVolts);
+#undef CASE
+  default: break;
+  };
+  return "UNKNOWN";
+}