private static bool TryTake(StringKeeper stringKeeper, Dictionary <string, ApplyIfToken> tokens, out StringKeeper newStringKeeper, out ApplyIfToken token)
{
var thisToken = tokens.FirstOrDefault(x => stringKeeper.IsNext(x.Key, false));
if (thisToken.Key != null)
{
var work = stringKeeper.Take(thisToken.Key.Length);
newStringKeeper = work;
token = thisToken.Value;
return(true);
}
newStringKeeper = stringKeeper;
token = null;
return(false);
}