// Adds a new literal at the end of the belief base
protected bool Add(Literal l, bool addInEnd)
{
if (!l.CanBeAddedInBB())
{
return(false);
}
Literal bl = Contains(l);
if (bl != null && !bl.IsRule())
{
if (bl.ImportAnnots(l))
{
if (l.HasAnnot(TPercept))
{
percepts.Add(bl);
}
return(true);
}
}
else
{
// new belief
l = l.Copy();
BelEntry entry = ProvideBelEntry(l);
entry.Add(l, addInEnd);
// Add it to percepts list
if (l.HasAnnot(TPercept))
{
percepts.Add(l);
}
size++;
return(true);
}
return(false);
}