source: trunk/sources/HeuristicLab.Persistence/3.3/Default/Xml/Compact/NumberEnumeration2XmlFormatterBase.cs @ 1566

using System.Collections;
using System.Text;
using HeuristicLab.Persistence.Interfaces;
using System;

namespace HeuristicLab.Persistence.Default.Xml.Compact {

  public abstract class NumberEnumeration2XmlFormatterBase<T> : FormatterBase<T, XmlString> where T : IEnumerable {

    protected virtual string Separator { get { return ";"; } }
    protected abstract void Add(IEnumerable enumeration, object o);
    protected abstract IEnumerable Instantiate();
    protected abstract string FormatValue(object o);
    protected abstract object ParseValue(string o);

    public override XmlString Format(T t) {
      StringBuilder sb = new StringBuilder();
      foreach (var value in (IEnumerable)t) {
        sb.Append(FormatValue(value));
        sb.Append(Separator);
      }
      return new XmlString(sb.ToString());
    }

    public override T Parse(XmlString x) {
      IEnumerable enumeration = Instantiate();
      string[] values = x.Data.Split(new[] { Separator }, StringSplitOptions.RemoveEmptyEntries);
      foreach (var value in values) {
        Add(enumeration, ParseValue(value));
      }
      return (T)enumeration;
    }
  }

}