Post-Parse Methods

Generally, the bulk of your application code is executed once parsing has completely finished - usually within your Main method. This ensures that all of the tasks that are part of parsing have finished and your "Options" class is fully built. For example:

var options = CliParser.Parse<MyOptions>(args);
RunApplication(options);

However, using the PostParseAttribute you can also mark parameterless methods that will run automatically once parsing is completed. When PostParse methods are nested within Verbs, they will be executed in order from innermost class to outermost, which means that whenever a PostParse method is executed, the configuration class and all its verbs will be fully initialized by that point.

This can offer a sort of Inversion of Control - if you set up your application's execution context inside one of these parse methods, clipr will launch your application as soon as parsing is complete with the fully-hydrated Options class injected as this.

internal class ParserWithPostParse
{
    [PositionalArgument(0)]
    public string Arg { get; set; }

    [PostParse]
    public void SetPostParse()
    {
        // You can access all arguments here
        RunApplication(this);
    }
}

CliParser.Parse<ParserWithPostParse>("argument".Split());