private static IEnumerable <CommandTreeToken> ScanOptions(CommandTreeTokenizerContext context, TextBuffer reader)
{
var result = new List <CommandTreeToken>();
var position = reader.Position;
reader.Consume('-');
context.AddRemaining('-');
if (!reader.TryPeek(out var character))
{
var token = new CommandTreeToken(CommandTreeToken.Kind.ShortOption, position, "-", "-");
throw CommandParseException.OptionHasNoName(reader.Original, token);
}
switch (character)
{
case '-':
var option = ScanLongOption(context, reader, position);
if (option != null)
{
result.Add(option);
}
break;
default:
result.AddRange(ScanShortOptions(context, reader, position));
break;
}
if (reader.TryPeek(out character))
{
// Encountered a separator?
if (character == '=' || character == ':')
{
reader.Read(); // Consume
context.AddRemaining(character);
if (!reader.TryPeek(out _))
{
var token = new CommandTreeToken(CommandTreeToken.Kind.String, reader.Position, "=", "=");
throw CommandParseException.OptionValueWasExpected(reader.Original, token);
}
result.Add(ScanString(context, reader));
}
}
return(result);
}
