private ITemplateType EvalMacro(ITemplateType source)
{
if (source == null) return StringType.Empty();
string obj;
if (!source.TryConvert(out obj))
{
_errors.ErrorMacrosOnlyAcceptStrings(source.UnderlyingType, string.Empty);
return StringType.Empty();
}
var i = new Interpreter.Interpreter(obj, Cache);
var result = i.Apply(_state);
_errors.AddRange(result.Errors);
return StringType.New(result.Output);
}