public StringFormatModel(XmlNode xml, OperatorModelFactory models)
{
Func <string, string> squareTagsToHtml = s =>
Regex.Replace(s, @"\[(?'tag'.+?)\]", match =>
string.Format("<{0}>", match.Groups["tag"].Value));
var pattern = squareTagsToHtml(xml.GetMandatoryAttribute("pattern"));
var constant = new ConstModel(pattern);
this.Arguments = xml.SelectNodes("./*").OfType <XmlNode>().Select(models.CreateModel).ToList();
if (constant.Value.MatchesOf(@"\{.+?\}").Count() != this.Arguments.Count())
{
throw new XmlConfigException("The count of arguments in the format string does not match the count of parameters");
}
this.Format = constant;
}
public Const(ConstModel constant, Type inferred = null)
{
this.create = () => "null".Equals(constant.Value)
? Expression.Constant(null, inferred ?? typeof(string))
: constant.Value.ToExpression(inferred ?? typeof(string));
}
