[stringtemplate-interest] Capturing evaluated attributes

[Scott Waye]

Hi,

I want to capture all evaluated attributes, and some summary about how 
they expanded (null, empty string, or not null).  So I subclassed 
StringTemplate with this:

    public class HostTemplate : StringTemplate
    {
        public class AttributeExpansion    
        {
            public string Name { get; set; }
            public object Result { get; set; }
        }

        public List<string> NullAttributes = new List<string>();
        public List<string> EmptyStringAttributes = new List<string>();
        public List<AttributeExpansion> ExpandedAttributes = new 
List<AttributeExpansion>();

        public HostTemplate(string template) : base(template)
        {
        }

        public override object GetAttribute(string name)
        {
            var res = base.GetAttribute(name);
            if(res == null)
            {
                NullAttributes.Add(name);
            }
            else if(res is string && ((string)res) == "")
            {
                EmptyStringAttributes.Add(name);
            }
            else
            {
                ExpandedAttributes.Add(new AttributeExpansion {Name = 
name, Result = res});
            }
            return res;
        }
    }

Seems to work, at least on simple templates.  Does this look OK, or have 
I reinvented a wheel that I've missed?

--
Scott