Antlr3.Build.Tasks.AntlrClassGenerationTask.CreateBuildTaskWrapper C# (CSharp) Method

        private AntlrClassGenerationTaskInternal CreateBuildTaskWrapper(AppDomain domain)
        {
            AntlrClassGenerationTaskInternal wrapper = (AntlrClassGenerationTaskInternal)domain.CreateInstanceAndUnwrap(Assembly.GetExecutingAssembly().FullName, typeof(AntlrClassGenerationTaskInternal).FullName);

            IList<string> sourceCodeFiles = null;
            if (this.SourceCodeFiles != null)
            {
                sourceCodeFiles = new List<string>(SourceCodeFiles.Length);
                foreach (ITaskItem taskItem in SourceCodeFiles)
                    sourceCodeFiles.Add(taskItem.ItemSpec);
            }

            if (this.TokensFiles != null && this.TokensFiles.Length > 0)
            {
                HashSet<string> copied = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
                foreach (ITaskItem taskItem in TokensFiles)
                {
                    string fileName = taskItem.ItemSpec;
                    if (!File.Exists(fileName))
                    {
                        Log.LogError("The tokens file '{0}' does not exist.", fileName);
                        continue;
                    }

                    string vocabName = Path.GetFileNameWithoutExtension(fileName);
                    if (!copied.Add(vocabName))
                    {
                        Log.LogWarning("The tokens file '{0}' conflicts with another tokens file in the same project.", fileName);
                        continue;
                    }

                    string target = Path.Combine(OutputPath, Path.GetFileName(fileName));
                    if (!Path.GetExtension(target).Equals(".tokens", StringComparison.OrdinalIgnoreCase))
                    {
                        Log.LogError("The destination for the tokens file '{0}' did not have the correct extension '.tokens'.", target);
                        continue;
                    }

                    File.Copy(fileName, target, true);
                    File.SetAttributes(target, File.GetAttributes(target) & ~FileAttributes.ReadOnly);
                }
            }

            wrapper.AntlrToolPath = AntlrToolPath;
            wrapper.SourceCodeFiles = sourceCodeFiles;
			wrapper.LibPaths = LibPaths;
            wrapper.Language = Language;
            wrapper.OutputPath = OutputPath;
            wrapper.RootNamespace = RootNamespace;
            wrapper.GeneratedSourceExtension = GeneratedSourceExtension;
            return wrapper;
        }