private void SetNextExpectedArg(
IItem item,
ParserResult pr,
ref IArgument expectedArg,
ref IItem expectedArgItem)
{
List <IArgument> argList = item?.Arguments.ToList( ) ?? _spec.Arguments.ToList( );
if (item != null &&
expectedArg != null &&
_spec.Arguments.Contains(expectedArg))
{
expectedArg = null;
}
if (expectedArg != null &&
expectedArg.IsDynamicArgument)
{
return;
}
IArgument arg,
prevArg = null;
while (true)
{
if (argList.Count == 0)
{
if (expectedArgItem != null)
{
expectedArg = expectedArgItem?.Arguments.FirstOrDefault(a => !pr.IsSet(a))
?? expectedArgItem?.DynamicArgument;
if (expectedArg == null)
{
expectedArgItem = null;
}
}
if (expectedArg == null)
{
expectedArg = _spec.Arguments.FirstOrDefault(a => !pr.IsSet(a));
}
return;
}
arg = argList[0];
if (expectedArg == null ||
prevArg == expectedArg)
{
expectedArg = arg;
return;
}
argList.RemoveAt(0);
prevArg = arg;
}
}