1using System.Collections;
 2
 3namespace jive
 4{
 5  public class SimpleContext : Context
 6  {
 7    Hashtable items;
 8
 9    public SimpleContext(Hashtable items)
10    {
11      this.items = items;
12    }
13
14    public bool contains<T>(Key<T> key)
15    {
16      return key.is_found_in(items);
17    }
18
19    public void add<T>(Key<T> key, T value)
20    {
21      key.add_value_to(items, value);
22    }
23
24    public T value_for<T>(Key<T> key)
25    {
26      return key.parse_from(items);
27    }
28
29    public void remove<T>(Key<T> key)
30    {
31      key.remove_from(items);
32    }
33  }
34}