#include <cstdio>
#include "model.h"
#include "exc.h"
#include "consts.h"
FrameObj::FrameObj(ClassType _ftype) : ftype(_ftype) {}
EmptyList *empty_list = new EmptyList();
EmptyList::EmptyList() : Cons(NULL, NULL) {}
string EmptyList::ext_repr() { return string("()"); }