private bool TryHandlePrematureError(Exception ex, TargetResolver targetResolver)
{
var context = new ExceptionContext(ex);
if (Register.RegisteredErrorHandler != null)
{
Register.RegisteredErrorHandler(context);
return(context.ReThrow);
}
else
{
for (int i = 0; i < m_types.Length; i++)
{
var type = m_types[i];
var errorHandler = ParserRunner.GetDefinedErrorHandlers(type).FirstOrDefault();
if (errorHandler != null)
{
var target = targetResolver == null ? null : targetResolver.Resolve(type);
errorHandler.Invoke(target, new[] { context });
return(context.ReThrow);
}
}
}
return(true);
}
private void HandleEmptyArguments(TargetResolver targetResolver)
{
if (Register.RegisteredEmptyHandler != null)
{
Register.RegisteredEmptyHandler();
}
else if (m_types.Length == 1)
{
var parser = new ParserRunner(m_types.First(), Register, HelpGenerator);
var target = targetResolver == null ? null : targetResolver.Resolve(m_types[0]);
parser.HandleEmptyArguments(target);
}
}
public int RunTargets(string[] args, TargetResolver targetResolver)
{
ParserRunner parser;
try
{
if (args.None() || args.All(a => string.IsNullOrEmpty(a)))
{
HandleEmptyArguments(targetResolver);
return(SuccessCode);
}
if (m_types.Length == 1)
{
parser = GetSingleTypeParser(args, Register);
}
else
{
Debug.Assert(m_types.Length > 1);
parser = GetMultiTypesParser(args, Register);
}
Debug.Assert(parser != null);
}
catch (Exception ex)
{
// handle error using the first available error handler
//
// (if returns true - should rethrow)
//
if (TryHandlePrematureError(ex, targetResolver))
{
throw;
}
else
{
return(ErrorCode);
}
}
var target = (targetResolver == null || targetResolver.RegisteredTypes.None()) ? null : targetResolver.Resolve(parser.Type);
return(parser.Run(args, target));
}