ParseResharperCLI CodeActivity

gistfile1.cs

    [BuildActivity(HostEnvironmentOption.All)]  
    public sealed class ParseResharperCLI : CodeActivity
    {
        // Define an activity input argument of type string
        public InArgument<string> PathToXml { get; set; }
        public OutArgument<string[]> Warnings { get; set; }
        public OutArgument<string[]> Errors { get; set; }

        // If your activity returns a value, derive from CodeActivity<TResult>
        // and return the value from the Execute method.
        protected override void Execute(CodeActivityContext context)
        {
            var document = XDocument.Load(context.GetValue(PathToXml), LoadOptions.None);
            var issueTypes = document.Descendants("IssueType")
                 .Select(x => new
                 {
                     Id = x.Attribute("Id").Value,
                     Severity = x.Attribute("Severity").Value
                 })
                 .ToList();

            var issues = document.Descendants("Issue")
                .Select(x => new Issue
                {
                    File = x.Attribute("File").Value,
                    Message = x.Attribute("Message").Value,
                    Severity = issueTypes.First(t => t.Id == x.Attribute("TypeId").Value).Severity,
                    Line = x.Attribute("Line") != null ? x.Attribute("Line").Value : null,
                })
                .ToList();

            var warnings = issues
                .Where(i => i.Severity != "ERROR")
                .Select(i => i.ToString())
                .ToArray();
            var errors = issues
                .Where(i => i.Severity == "ERROR")
                .Select(i => i.ToString())
                .ToArray();

            context.SetValue<string[]>(this.Errors, errors);
            context.SetValue<string[]>(this.Warnings, warnings);
        }
    }

    public class Issue
    {
        public string File { get; set; }

        public string Message { get; set; }

        public string Severity { get; set; }

        public string Line { get; set; }

        public override string ToString()
        {
            return string.Format("{0}  File: {1}  Line: {2}  Message: {3} ", Severity, File, Line, Message);
        }
    }