public virtual bool VisitDirectionExpression(DirectionExpression directionExpression, object d)
{
if ((directionExpression == null)) {
return SetFailure();
}
if ((d == null)) {
return SetFailure();
}
if ((directionExpression.Expression == null)) {
return SetFailure();
}
if(directionExpression.GetType() != d.GetType()) {return SetFailure();}
var data = (DirectionExpression)d;
if (!IsMatch(directionExpression, data)) {
return SetFailure();
}
return directionExpression.Expression.AcceptVisitor(this, data.Expression);
}
