public ChainItem GetOrAdd(string value)
{
ChainItem item;
if (!_items.TryGetValue(value, out item))
{
item = new ChainItem(value);
_items [value] = item;
}
return(item);
}
public void LearnFrom(IEnumerable <string> lines, ISplitter splitter)
{
_items.Clear();
_separator = splitter.Separator;
_endOfSequence = splitter.EndOfSequence;
foreach (var l in lines)
{
bool atStart = true;
ChainItem current = null;
foreach (string item in splitter.Split(l))
{
if (item == splitter.EndOfSequence)
{
if (current != null)
{
current.CanFinish = true;
}
atStart = true;
continue;
}
var next = GetOrAdd(item);
if (!atStart)
{
current.Register(next.Value);
}
else
{
if (char.IsUpper(next.Value[0]))
{
next.CanStart = true;
}
atStart = false;
}
current = next;
}
}
Normalize();
}
public string Generate(int maxLength, IRandomSource random)
{
ChainItem current = null;
var result = new StringBuilder();
int count = 0;
while (count < maxLength)
{
if (current == null)
{
current = _items.Values.Where(i => i.CanStart).OrderBy(_ => Builders.Build <int>(random)).First();
result.Append(current.Value);
count++;
continue;
}
if (current.CanFinish && Builders.Build <byte>(random) % 10 < 3)
{
result.Append(_endOfSequence + _separator);
current = null;
continue;
}
var next = current.PickNext(random);
if (next == null)
{
result.Append(_endOfSequence + _separator);
current = null;
continue;
}
current = _items [next];
result.Append(_separator + current.Value);
count++;
}
return(result.ToString());
}
public ChainItem GetOrAdd(string value)
{
ChainItem item;
if (!_items.TryGetValue (value, out item)) {
item = new ChainItem (value);
_items [value] = item;
}
return item;
}
