/// <summary>
/// Extends current chain about new rule with given probability.
/// </summary>
/// <param name="rule">Extending rule.</param>
/// <param name="probability">Probability of extending rule.</param>
/// <returns>Extended chain.</returns>
internal RuleChain ExtendBy(ContextRule rule, double probability)
{
return(new RuleChain(this, rule, _totalProbability * probability));
}
/// <summary>
/// Initializes empty chain.
/// </summary>
internal RuleChain()
{
_totalProbability = 1.0;
_previousChain = null;
_rule = null;
}
/// <summary>
/// Initializes part of chain based on previous parts of chain.
/// </summary>
private RuleChain(RuleChain previousChain, ContextRule rule, double totalProbability)
{
_previousChain = previousChain;
_rule = rule;
_totalProbability = totalProbability;
}
internal void Add(ContextRule contextRule)
{
_rules.Add(contextRule);
}
