public State VisitMutableBox(State state, MutableBoxDatum d)
{
if (state.BoxesSeen.Contains(d))
{
State s2 = new State
(
state.BoxesSeen,
state.BoxesReferenced.Add(d, new IntDatum(state.NextBoxNumber)),
state.NextBoxNumber + 1
);
return(s2);
}
else
{
State s2 = new State
(
state.BoxesSeen.Add(d),
state.BoxesReferenced,
state.NextBoxNumber
);
State s3 = d.Content.Visit <State>(this, s2);
return(s3);
}
}
public bool VisitMutableBox(MutableBoxDatum d)
{
bw.Write(B_MUTABLE_BOX);
IntDatum id = (IntDatum)(mutableBoxMap[d]);
bw.Write((int)id.Value);
return(true);
}
private int CompareMutableBox(MutableBoxDatum x, MutableBoxDatum y)
{
if (x.ID < y.ID)
{
return(-1);
}
if (x.ID > y.ID)
{
return(1);
}
return(0);
}
public string VisitMutableBox(MutableBoxDatum d)
{
if (boxReferences.BoxesReferenced.ContainsKey(d))
{
if (boxesStarted.Contains(d))
{
return("#b[" + boxReferences.BoxesReferenced[d].Visit(this) + "]");
}
else
{
boxesStarted = boxesStarted.Add(d);
return("#b[" + boxReferences.BoxesReferenced[d].Visit(this) + "]=" + d.Content.Visit(this));
}
}
else
{
return("#b=" + d.Content.Visit(this));
}
}
public SetDatum VisitMutableBox(MutableBoxDatum d)
{
if (visited.ContainsKey(d))
{
return((SetDatum)(visited[d]));
}
else if (visiting.Contains(d))
{
return(SetDatum.Empty);
}
else
{
visiting = SetDatum.Union(visiting, SetDatum.Singleton(d));
SetDatum result = SetDatum.Union(d.Content.Visit(this), SetDatum.Singleton(d));
visiting = SetDatum.Difference(visiting, SetDatum.Singleton(d));
visited = visited.Add(d, result);
return(result);
}
}
public SetDatum VisitMutableBox(MutableBoxDatum d)
{
bool firstTime;
long id = idgen.GetId(d, out firstTime);
if (firstTime)
{
SetDatum s = d.Content.Visit(this);
mutableBoxCollections = mutableBoxCollections.Add(id, s);
return(s);
}
else if (mutableBoxCollections.ContainsKey(id))
{
return(mutableBoxCollections[id]);
}
else
{
return(SetDatum.Empty);
}
}
public string VisitMutableBox(MutableBoxDatum d)
{
return("m" + d.ID);
}
private bool EqualMutableBox(MutableBoxDatum x, MutableBoxDatum y)
{
return(x.ID == y.ID);
}