internal static IArgumentArity Default(Type type, Argument argument, ISymbol parent)
{
if (typeof(IEnumerable).IsAssignableFrom(type) &&
type != typeof(string))
{
return(parent is ICommand
? ZeroOrMore
: OneOrMore);
}
if (type == typeof(bool))
{
return(ZeroOrOne);
}
if (parent is ICommand &&
(argument.HasDefaultValue ||
type.IsNullable()))
{
return(ZeroOrOne);
}
return(ExactlyOne);
}
private static string GetArgumentRowHeader(Argument argument)
{
var sb = new StringBuilder();
foreach (var displayName in argument.GetDisplayNames())
{
if (sb.Length > 0)
sb.Append(@", ");
sb.Append(displayName);
}
if (argument.IsOption && !argument.IsFlag)
sb.Append(@" <arg>");
if (argument.IsList)
sb.Append(@"...");
return sb.ToString();
}
private static string GetParameterSyntax(Argument parameter)
{
var sb = new StringBuilder();
sb.Append(parameter.GetDisplayName());
if (parameter.IsList)
sb.Append(@"...");
return sb.ToString();
}
private static string GetOptionSyntax(Argument option)
{
var sb = new StringBuilder();
sb.Append(@"[");
sb.Append(option.GetDisplayName());
if (!option.IsFlag)
sb.Append(@" <arg>");
if (option.IsList)
sb.Append(@"...");
sb.Append(@"]");
return sb.ToString();
}
public void Add(Argument argument) => AddArgument(argument);
public void AddArgument(Argument argument) => AddArgumentInner(argument);