bcnames - string as reference

libsrc/meshing/meshclass.cpp

@@ -5588,14 +5588,16 @@ namespace netgen
       bcnames[bcnr] = 0;
   }
 
-  string Mesh ::GetBCName ( int bcnr ) const
+  const string & Mesh ::GetBCName ( int bcnr ) const
   {
+    static string defaultstring = "default";
+
     if ( !bcnames.Size() )
-      return "default";
+      return defaultstring;
     if ( bcnames[bcnr] )
       return *bcnames[bcnr];
     else
-      return "default";
+      return defaultstring;
   }
 
   void Mesh :: SetUserData(const char * id, Array<int> & data)

libsrc/meshing/meshclass.hpp

@@ -585,7 +585,7 @@ namespace netgen
 
     DLL_HEADER void SetBCName ( int bcnr, const string & abcname );
 
-    string GetBCName ( int bcnr ) const;
+    const string & GetBCName ( int bcnr ) const;
 
     string * GetBCNamePtr ( int bcnr )
     { return bcnames[bcnr]; }

libsrc/meshing/meshfunc2d.cpp

@@ -44,7 +44,6 @@ namespace netgen
 		meshopt.ImproveMesh(mesh, mp);
 		break;
 	      }
-	    
 	    case 'c': 
 	      {
 		MeshOptimize2d meshopt;

libsrc/meshing/meshtype.cpp

@@ -2311,13 +2311,11 @@ namespace netgen
   }
 
 
-  string FaceDescriptor :: GetBCName () const
+  const string & FaceDescriptor :: GetBCName () const
   {
-    if ( bcname )
-      return *bcname;
-    else 
-      return "default";
-  
+    static string defaultstring = "default";
+    if (bcname) return *bcname;
+    return defaultstring;
   }
 
   /*

libsrc/meshing/meshtype.hpp

@@ -847,12 +847,10 @@ namespace netgen
     const string * BCNamePtr () const 
     { return bcname; }
 
-    string GetBCName () const
+    const string & GetBCName () const
     {
-      if (! bcname )
-	{
-	  return "default";
-	}
+      static string defaultstring = "default";
+      if (! bcname ) return defaultstring;
       return *bcname;
     }
 
@@ -934,7 +932,7 @@ namespace netgen
     // Philippose - 06/07/2009
     // Get Surface colour
     Vec3d SurfColour () const { return surfcolour; }
-    string GetBCName () const; 
+    const string & GetBCName () const; 
     // string * BCNamePtr () { return bcname; }
     // const string * BCNamePtr () const  { return bcname; }
     void SetSurfNr (int sn) { surfnr = sn; }

libsrc/meshing/smoothing2.cpp

@@ -865,7 +865,6 @@ namespace netgen
 	      //	      (*testout) << "x = " << x << endl;
 	    }
 
-	
 	  Point3d origp = mesh[pi];
 	  int loci = 1;
 	  double fact = 1;