public TValue this[string key]
{
get
{
// will throw KeyNotFound exception if not present
string[] components = key.Split(new char[] { '.' }, 2);
if (components.Length == 1)
{
if (leaves.ContainsKey(key) && hasLeaf(leaves[key]))
{
return(getLeaf(leaves[key]));
}
else
{
throw new KeyNotFoundException(key);
}
}
else
{
DirectoryHT <TValue> child = children[components[0]];
return(child[components[1]]);
}
}
set
{
Add(key, value);
}
}
public DirectoryHT(DirectoryHT <TValue> p)
{
parent = p;
if (p != null)
{
Default = p.Default;
Alts = p.Alts;
}
}
// p is key to a sub directory
public DirectoryHT <TValue> subDir(string p)
{
string[] components = p.Split(new char[] { '.' }, 2);
if (components.Length == 1)
{
return(children[components[0]]);
}
else
{
DirectoryHT <TValue> child = children[components[0]];
return(child == null ? null : child.subDir(components[1]));
}
}
public void Add(string key, TValue value, string variant)
{
string[] components = key.Split(new char[] { '.' }, 2);
if (components.Length == 1)
{
if (!leaves.ContainsKey(components[0]))
{
leaves[components[0]] = new Dictionary <string, TValue>();
}
leaves[components[0]][variant] = value;
}
else
{
if (!children.ContainsKey(components[0]))
{
children[components[0]] = new DirectoryHT <TValue>(this);
}
children[components[0]].Add(components[1], value, variant);
}
}
