public Option <TEnvironment> Add(string shortopt, string longopt, string description, Action <TEnvironment, string> handler, OptionAttributes attributes)
{
var p = new SingleValueOption <TEnvironment>(shortopt, longopt, description, attributes, handler);
Options.Add(p);
return(p);
}
/// <summary>
/// Invokes the <see cref="SingleValueOption{TEnvironment}.Handler"/> to process the parameter
/// and the provided value
/// </summary>
/// <param name="parameter">Single-value parameter</param>
/// <param name="env">Environment</param>
/// <param name="args">Arguments to lookup the value</param>
/// <param name="paramIndex">Pointer to the first possible value in the arguments list</param>
/// <returns>Pointer to the value-past position (or parameter-past position if there is no value and the parameter is optional value)</returns>
private int ParseSingleValueParamater(SingleValueOption <TEnvironment> parameter, TEnvironment env, string[] args, int paramIndex)
{
var value = this.GetParameterValue(parameter, args, paramIndex);
// Leave on error
if (value == null && parameter.IsRequired)
{
env.Errors.Add(string.Format("Parameter {0} is required", parameter.LongName ?? parameter.ShortName));
// Move 1 position past to the parameter
return(paramIndex + 1);
}
parameter.Handler.Invoke(env, value);
// If there is a value, increment the pointer
if (value != null)
{
return(paramIndex + 2);
}
return(paramIndex + 1);
}
