Simplified generated code dealing with hidden structure parameters.

src/Generator/Generators/CSharp/CSharpTextTemplate.cs

@@ -1628,16 +1628,15 @@ namespace CppSharp.Generators.CSharp
             var needsFixedThis = needsInstance && isValueType;
             var @params = GenerateFunctionParamsMarshal(parameters, function);
 
-            Class retClass = null;
             if (function.HasHiddenStructParameter)
             {
                 var hiddenParam = function.Parameters[0];
                 if (hiddenParam.Kind != ParameterKind.HiddenStructureReturn)
                     throw new NotSupportedException("Expected hidden structure parameter kind");
 
+                Class retClass = null;
                 hiddenParam.Type.Desugar().IsTagDecl(out retClass);
-                WriteLine("var {0} = new {1}.Internal();", GeneratedIdentifier("udt"),
-                    retClass.OriginalName);
+                WriteLine("var ret = new {0}.Internal();", retClass.OriginalName);
             }
 
             var names = new List<string>();
@@ -1654,7 +1653,7 @@ namespace CppSharp.Generators.CSharp
 
             if (function.HasHiddenStructParameter)
             {
-                var name = string.Format("new IntPtr(&{0})", GeneratedIdentifier("udt"));
+                var name = string.Format("new IntPtr(&ret)");
                 names.Insert(0, name);
             }
 
@@ -1701,15 +1700,6 @@ namespace CppSharp.Generators.CSharp
             }
 
             if (needsReturn)
-            {
-                if (function.HasHiddenStructParameter)
-                {
-                    WriteLine("var ret = new {0}({1});", retClass.Name,
-                        GeneratedIdentifier("udt"));
-
-                    WriteLine("return ret;");
-                }
-                else
             {
                 var ctx = new CSharpMarshalContext(Driver)
                 {
@@ -1719,7 +1709,7 @@ namespace CppSharp.Generators.CSharp
                 };
 
                 var marshal = new CSharpMarshalNativeToManagedPrinter(ctx);
-                    function.ReturnType.CSharpMarshalToManaged(marshal);
+                retType.CSharpMarshalToManaged(marshal);
 
                 if (!string.IsNullOrWhiteSpace(marshal.Context.SupportBefore))
                     Write(marshal.Context.SupportBefore);
@@ -1727,7 +1717,6 @@ namespace CppSharp.Generators.CSharp
                 WriteLine("return {0};", marshal.Context.Return);
             }
         }
-        }
 
         private void GenerateFunctionCallOutParams(IEnumerable<ParamMarshal> @params,
             ICollection<TextGenerator> cleanups)
@@ -2146,7 +2135,7 @@ namespace CppSharp.Generators.CSharp
             }
 
             WriteLine("public static extern {0} {1}({2});", retType,
-                      GetFunctionIdentifier(function),
+                      GetFunctionNativeIdentifier(function),
                       string.Join(", ", @params));
             PopBlock(NewLineKind.BeforeNextBlock);