Fixed the generated code when specialising types represented the same way in C#.

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

src/Generator/Generators/CSharp/CSharpTextTemplate.cs

@@ -67,9 +67,10 @@ namespace CppSharp.Generators.CSharp
             }
         }
 
-        public static StringBuilder FormatTypesStringForIdentifier(StringBuilder types)
+        public static string FormatTypesStringForIdentifier(StringBuilder types)
         {
-            return types.Replace("global::System.", string.Empty).Replace("*", "Ptr").Replace('.', '_');
+            return types.Replace("global::System.", string.Empty).Replace("*", "Ptr")
+                .Replace('.', '_').Replace(' ', '_').Replace("::", "_").ToString();
         }
 
         public static string GetSuffixForInternal(ClassTemplateSpecialization specialization,
@@ -90,6 +91,7 @@ namespace CppSharp.Generators.CSharp
                 typePrinter.PushContext(CSharpTypePrinterContextKind.Managed);
                 typePrinter.PushMarshalKind(CSharpMarshalKind.Unknown);
             }
+            var cppTypePrinter = new CppTypePrinter(false) { PrintScopeKind = CppTypePrintScopeKind.Qualified };
             CSharpTypePrinter.AppendGlobal = false;
             var suffix = new StringBuilder();
             foreach (var argType in from argType in specialization.Arguments
@@ -119,7 +121,7 @@ namespace CppSharp.Generators.CSharp
                         continue;
                     }
                 }
-                suffix.Append(argType);
+                suffix.Append(argType.Visit(cppTypePrinter));
             }
             if (!nested)
             {
@@ -127,8 +129,7 @@ namespace CppSharp.Generators.CSharp
                 typePrinter.PopMarshalKind();
             }
             CSharpTypePrinter.AppendGlobal = true;
-            FormatTypesStringForIdentifier(suffix);
+            return FormatTypesStringForIdentifier(suffix);
-            return suffix.ToString();
         }
     }
 

src/Generator/Passes/DelegatesPass.cs

@@ -179,7 +179,7 @@ namespace CppSharp.Passes
             }
             if (typesBuilder.Length > 0)
                 typesBuilder.Remove(typesBuilder.Length - 1, 1);
-            var delegateName = Helpers.FormatTypesStringForIdentifier(typesBuilder).ToString();
+            var delegateName = Helpers.FormatTypesStringForIdentifier(typesBuilder);
             if (returnType.Type.IsPrimitiveType(PrimitiveType.Void))
                 delegateName = "Action_" + delegateName;
             else

tests/Common/Common.h

@@ -1131,6 +1131,9 @@ class UsesSpecialisationOfVoid
 private:
     SpecialisesVoid<void>* s;
     SpecialisesVoidInUnion<void>* h;
+    SpecialisesVoid<int> i;
+    SpecialisesVoid<long> l;
+    SpecialisesVoid<unsigned int> u;
 };
 
 class DLL_API HasAbstractOperator