Add ability to output JetTagClass to std::ostream

Author: iarspider

DataFormats/L1TParticleFlow/interface/jets.h

@@ -5,6 +5,7 @@
 #include "DataFormats/L1TParticleFlow/interface/gt_datatypes.h"
 #include "DataFormats/L1TParticleFlow/interface/bit_encoding.h"
 #include <array>
+#include <algorithm>
 #include <cstdint>
 #include <vector>
 #include <unordered_map>
@@ -33,6 +34,18 @@ namespace l1ct {
     JetTagClassValue value_;
     static const std::unordered_map<std::string, JetTagClassValue> labels_;
 
+    friend std::ostream &operator<<(std::ostream &ost, const l1ct::JetTagClass &jtc) {
+      std::string res = "";
+      auto it = std::find_if(
+          std::begin(jtc.labels_), std::end(jtc.labels_), [&jtc](auto &&p) { return p.second == jtc.value_; });
+      if (it != std::end(jtc.labels_)) {
+        res = it->first;
+      }
+
+      ost << res;
+      return ost;
+    }
+
   };  // JetTagClass
 
   // Define a separate class/struct for jet tag handling