[PWGUD] SGSelector: Fix const correctness (#12550)

Author: vkucera

PWGUD/Core/SGSelector.h

@@ -31,8 +31,8 @@
 
 template <typename BC>
 struct SelectionResult {
-  int value; // The original integer return value
-  BC* bc;    // Pointer to the BC object
+  int value;    // The original integer return value
+  const BC* bc; // Pointer to the BC object
 };
 
 namespace o2::aod::sgselector
@@ -54,14 +54,14 @@ class SGSelector
   SGSelector() : myRCTChecker{"CBT"}, myRCTCheckerHadron{"CBT_hadronPID"}, myRCTCheckerZDC{"CBT", true}, myRCTCheckerHadronZDC{"CBT_hadronPID", true} {}
 
   template <typename CC, typename BCs, typename TCs, typename FWs>
-  int Print(SGCutParHolder /*diffCuts*/, CC& collision, BCs& /*bcRange*/, TCs& /*tracks*/, FWs& /*fwdtracks*/)
+  int Print(SGCutParHolder const& /*diffCuts*/, CC const& collision, BCs const& /*bcRange*/, TCs const& /*tracks*/, FWs const& /*fwdtracks*/)
   {
     LOGF(info, "Size of array %i", collision.size());
     return 1;
   }
 
   template <typename CC, typename BCs, typename BC>
-  SelectionResult<BC> IsSelected(SGCutParHolder diffCuts, CC& collision, BCs& bcRange, BC& oldbc)
+  SelectionResult<BC> IsSelected(SGCutParHolder const& diffCuts, CC const& collision, BCs const& bcRange, BC const& oldbc)
   {
     //        LOGF(info, "Collision %f", collision.collisionTime());
     //        LOGF(info, "Number of close BCs: %i", bcRange.size());
@@ -138,9 +138,9 @@ class SGSelector
   }
 
   template <typename CC>
-  int trueGap(CC& collision, float fv0, float ft0a, float ft0c, float zdc_cut)
+  int trueGap(CC const& collision, const float fv0, const float ft0a, const float ft0c, const float zdc_cut)
   {
-    float fit_cut[3] = {fv0, ft0a, ft0c};
+    const float fit_cut[3] = {fv0, ft0a, ft0c};
     int gap = collision.gapSide();
     int true_gap = gap;
     // float FV0A, FT0A, FT0C, ZNA, ZNC;
@@ -174,7 +174,7 @@ class SGSelector
 
   // check CBT flags
   template <typename CC>
-  bool isCBTOk(CC& collision)
+  bool isCBTOk(CC const& collision)
   {
     if (myRCTChecker(collision))
       return true;
@@ -183,7 +183,7 @@ class SGSelector
 
   // check CBT+hadronPID flags
   template <typename CC>
-  bool isCBTHadronOk(CC& collision)
+  bool isCBTHadronOk(CC const& collision)
   {
     if (myRCTCheckerHadron(collision))
       return true;
@@ -192,7 +192,7 @@ class SGSelector
 
   // check CBT+ZDC flags
   template <typename CC>
-  bool isCBTZdcOk(CC& collision)
+  bool isCBTZdcOk(CC const& collision)
   {
     if (myRCTCheckerZDC(collision))
       return true;
@@ -201,7 +201,7 @@ class SGSelector
 
   // check CBT+hadronPID+ZDC flags
   template <typename CC>
-  bool isCBTHadronZdcOk(CC& collision)
+  bool isCBTHadronZdcOk(CC const& collision)
   {
     if (myRCTCheckerHadronZDC(collision))
       return true;