public static async Task GenerateFile(ResXGeneratorOptions options, ResXGeneratorResult result)
        {
            var inputFilePath        = options.InputFilePath;
            var targetsPcl2Framework = options.TargetPcl2Framework;
            var outputFilePath       = !string.IsNullOrEmpty(options.OutputFilePath) ? options.OutputFilePath
                : $"{Path.GetFileNameWithoutExtension(inputFilePath)}.Designer.cs";

            //no need to escape/cleanup, StronglyTypedResourceBuilder does that
            var className = !string.IsNullOrEmpty(options.ResultClassName) ? options.ResultClassName
                : Path.GetFileNameWithoutExtension(inputFilePath);

            var provider     = new CSharpCodeProvider();
            var resourceList = new Dictionary <object, object>();

            await Task.Run(() =>
            {
                if (className == null)
                {
                    result.Errors.Add(new CompilerError(inputFilePath, 0, 0, null,
                                                        "Class name cannot be null"));
                    return;
                }

                using (var r = new ResXResourceReader(inputFilePath))
                {
                    r.BasePath = Path.GetDirectoryName(inputFilePath);
                    foreach (DictionaryEntry e in r)
                    {
                        resourceList.Add(e.Key, e.Value);
                    }
                }

                string[] unmatchable;
                var ccu = StronglyTypedResourceBuilder.Create(resourceList, className, options.ResultNamespace, provider,
                                                              options.GenerateInternalClass, out unmatchable);

                if (targetsPcl2Framework)
                {
                    FixupPclTypeInfo(ccu, result);
                }


                foreach (var p in unmatchable)
                {
                    var msg = $"Could not generate property for resource ID '{p}'";
                    result.Errors.Add(new CompilerError(inputFilePath, 0, 0, null, msg));
                }

                // Avoid race if ResXFileCodeGenerator is called more than once for the same file
                using (var fw = new FileStream(outputFilePath, FileMode.Create, FileAccess.Write, FileShare.Read))
                {
                    using (var w = new StreamWriter(fw, Encoding.UTF8))
                        provider.GenerateCodeFromCompileUnit(ccu, w, new CodeGeneratorOptions());
                }
                result.GeneratedFilePath = outputFilePath;
            });
        }
 //works with .NET 4.5.1 and Mono 3.4.0
 static void FixupPclTypeInfo(CodeCompileUnit ccu, ResXGeneratorResult result)
 {
     try
     {
         CodeObjectCreateExpression initExpr = GetInitExpr(ccu);
         var typeofExpr = (CodePropertyReferenceExpression)initExpr.Parameters[1];
         typeofExpr.TargetObject = new CodeMethodInvokeExpression(typeofExpr.TargetObject, "GetTypeInfo");
     }
     catch (Exception ex)
     {
         result.UnhandledException = ex;
     }
 }