C#: Avoid extracting duplicate type locations.

Author: michaelnebel

csharp/extractor/Semmle.Extraction.CSharp/Entities/Types/NamedType.cs

@@ -81,7 +81,7 @@ public override void Populate(TextWriter trapFile)
             }
 
             // Class location
-            if (!Symbol.IsGenericType || Symbol.IsReallyUnbound())
+            if ((!Symbol.IsGenericType || Symbol.IsReallyUnbound()) && Context.ExtractLocation(Symbol))
             {
                 WriteLocationsToTrap(trapFile.type_location, this, Locations);
             }

csharp/extractor/Semmle.Extraction.CSharp/Entities/Types/TypeParameter.cs

@@ -26,9 +26,12 @@ public override void Populate(TextWriter trapFile)
             var parentNs = Namespace.Create(Context, Symbol.TypeParameterKind == TypeParameterKind.Method ? Context.Compilation.GlobalNamespace : Symbol.ContainingNamespace);
             trapFile.parent_namespace(this, parentNs);
 
-            foreach (var l in Symbol.Locations)
+            if (Context.ExtractLocation(Symbol))
             {
-                WriteLocationToTrap(trapFile.type_location, this, Context.CreateLocation(l));
+                foreach (var l in Symbol.Locations)
+                {
+                    WriteLocationToTrap(trapFile.type_location, this, Context.CreateLocation(l));
+                }
             }
 
             if (IsSourceDeclaration)