ParseException.cs

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using System;
 
namespace getopt.net {
 
    public class ParseException: Exception {
 
        public ParseException(string msg): this(null, msg) { }
 
        public ParseException(string? optString, string msg): base(msg) {
            Option = optString;
        }
 
        public override string ToString() {
            if (string.IsNullOrEmpty(Option)) {
                return base.ToString();
            }
            return $"Error occurred while parsing { Option }: { Message }";
        }
 
        public string? Option { get; set; }
    }
}