};
-class Void : public Value
+class Null : public Value
{
public:
void visit(Visitor &visitor);
class Visitor
{
public:
- virtual void visit(Void *) {assert(0);}
+ virtual void visit(Null *) {assert(0);}
virtual void visit(Bool *) {assert(0);}
virtual void visit(SInt *) {assert(0);}
virtual void visit(UInt *) {assert(0);}