fix: get rid of MergeParticleIDConfig::Print

Author: wdconinc

src/algorithms/pid/MergeParticleID.cc

@@ -20,7 +20,7 @@
 
 namespace eicrecon {
 
-void MergeParticleID::init() { m_cfg.Print<algorithms::LogLevel::kDebug>(this); }
+void MergeParticleID::init() { debug() << m_cfg << endmsg; }
 
 void MergeParticleID::process(const MergeParticleID::Input& input,
                               const MergeParticleID::Output& output) const {

src/algorithms/pid/MergeParticleID.h

@@ -57,21 +57,7 @@ class MergeParticleID : public MergeParticleIDAlgorithm,
 #endif
   }
 
-  friend class MergeParticleIDConfig;
   friend class Tools;
 };
 
-// Definition of MergeParticleIDConfig::Print requires class MergeParticleID, but
-// circular dependency prevents it from being in MergeParticleIDConfig.h
-template <algorithms::LogLevel lvl>
-constexpr void MergeParticleIDConfig::Print(const MergeParticleID* logger) const {
-  // print all parameters
-  logger->log<lvl>("{:=^60}", " MergeParticleIDConfig Settings ");
-  auto print_param = [&logger](auto name, auto val) {
-    logger->log<lvl>("  {:>20} = {:<}", name, val);
-  };
-  print_param("mergeMode", mergeMode);
-  logger->log<lvl>("{:=^60}", "");
-}
-
 } // namespace eicrecon

src/algorithms/pid/MergeParticleIDConfig.h

@@ -23,8 +23,17 @@ class MergeParticleIDConfig {
   //
   /////////////////////////////////////////////////////
 
-  // print all parameters
-  template <algorithms::LogLevel lvl = algorithms::LogLevel::kDebug>
-  constexpr void Print(const MergeParticleID* logger) const;
+  // stream all parameters
+  friend std::ostream& operator<<(std::ostream& os, const MergeParticleIDConfig& cfg) {
+    // print all parameters
+    os << fmt::format("{:=^60}", " MergeParticleIDConfig Settings ") << std::endl;
+    auto print_param = [&os](auto name, auto val) {
+      os << fmt::format("  {:>20} = {:<}", name, val) << std::endl;
+    };
+    print_param("mergeMode", cfg.mergeMode);
+    os << fmt::format("{:=^60}", "") << std::endl;
+    return os;
+  }
 };
+
 } // namespace eicrecon