/// <summary>
/// Performs the Search given the <paramref name="solver"/>.
/// </summary>
/// <param name="solver"></param>
/// <returns></returns>
private Solver PerformSearch(Solver solver)
{
// TODO: TBD: depending on the kind of collector, first, last, all, etc, may want to rethink this approach a bit...
// TODO: TBD: particularly in how/when we process the assignments/variables...
var collection = new ReadOnlyAssignmentCollection(Collector);
// Evaluate Variables as an Array once.
var variables = Variables.ToArray();
// The Solver should be set but let's double check that just in case.
while (solver?.NextSolution() == true)
{
// TODO: TBD: the only thing I don't like about this is the overhead involved maintaining events/handlers/args, etc
if (OnPredicated().ShouldBreak)
{
break;
}
if (OnNextAssignment(collection).ShouldBreak)
{
break;
}
if (OnProcessVariables(variables).ShouldBreak)
{
break;
}
}
return(solver);
}
private ReceiveAssignmentEventArgs OnNextAssignment(ReadOnlyAssignmentCollection collection)
{
// Only engage the collection and potentially invoke the event when we have something to invoke.
if (NextAssignment == null || !(collection.HasCollector && collection.Any()))
{
return(new ReceiveAssignmentEventArgs(Solver));
}
var e = new ReceiveAssignmentEventArgs(Solver, collection[collection.Count - 1]);
NextAssignment(this, e);
return(e);
}