#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>

#ifndef STACKSLOT
#define STACKSLOT
typedef int Object;
typedef struct ObjRef{
    bool brokenHeart;
    struct ObjRef *forward_pointer;
    unsigned int size;
    unsigned char data[1];
} *ObjRef;

typedef struct {
    bool isObjRef;
    union {
        ObjRef objRef;
        int number;
    } u;
} StackSlot;

ObjRef getIntObj(int val) {
    ObjRef intObject;
    unsigned int objSize = sizeof(ObjRef) + sizeof(int);
    if ((intObject = malloc(objSize)) == NULL) {
        perror("malloc");
    }
    *(int *) intObject->data = val;
    intObject->size = sizeof(int);
    return intObject;
}

int getValFromIntObj(ObjRef iref) {
    return *(int *) iref->data;
}

int getIntValfromStackSlot(StackSlot s) {
    if (s.isObjRef) {
        return *(int *) s.u.objRef->data;
    }
    return s.u.number;
}

void setValIntObj(ObjRef iref, int val) {
    iref->size = sizeof(int);
    *(int *) iref->data = val;
}

StackSlot stackSlotWithObjRef(ObjRef val) {
    StackSlot *stackSlot;
    stackSlot = malloc(sizeof(StackSlot));
    stackSlot->isObjRef = true;
    stackSlot->u.objRef = val;
    return *stackSlot;
}

StackSlot stackSlotWitchNumber(int val) {
    StackSlot *stackSlot;
    stackSlot = malloc(sizeof(StackSlot));
    stackSlot->isObjRef = false;
    stackSlot->u.number = val;
    return *stackSlot;
}

#endif