More efficient enum flag checking

NetTopologySuite · Jan 17, 2019 · 38d5615 · 38d5615
1 parent 1f5699e
commit 38d5615
Showing 1 changed file with 9 additions and 4 deletions.
diff --git a/NetTopologySuite.IO.PostGis/PostGisReader.cs b/NetTopologySuite.IO.PostGis/PostGisReader.cs
@@ -221,22 +221,27 @@ protected ICoordinateSequence ReadCoordinateSequence(BinaryReader reader, ICoord
 
             var sequence = factory.Create(numPoints, outputOrdinates);
 
+            var receivedZ = receivedOrdinates.HasFlag(Ordinates.Z);
+            var receivedM = receivedOrdinates.HasFlag(Ordinates.M);
+            var outputtingZ = outputOrdinates.HasFlag(Ordinates.Z);
+            var outputtingM = outputOrdinates.HasFlag(Ordinates.M);
+
             for (int i = 0; i < numPoints; i++)
             {
                 sequence.SetOrdinate(i, Ordinate.X, precisionModel.MakePrecise(reader.ReadDouble()));
                 sequence.SetOrdinate(i, Ordinate.Y, precisionModel.MakePrecise(reader.ReadDouble()));
 
-                if (receivedOrdinates.HasFlag(Ordinates.Z))
+                if (receivedZ)
                 {
                     var z = reader.ReadDouble();
-                    if (outputOrdinates.HasFlag(Ordinates.Z))
+                    if (outputtingZ)
                         sequence.SetOrdinate(i, Ordinate.Z, z);
                 }
 
-                if (receivedOrdinates.HasFlag(Ordinates.M))
+                if (receivedM)
                 {
                     var m = reader.ReadDouble();
-                    if (outputOrdinates.HasFlag(Ordinates.M))
+                    if (outputtingM)
                         sequence.SetOrdinate(i, Ordinate.M, m);
                 }
             }