67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifndef STACKSLOT
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#define STACKSLOT
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typedef int Object;
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typedef struct ObjRef{
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bool brokenHeart;
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struct ObjRef *forward_pointer;
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unsigned int size;
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unsigned char data[1];
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} *ObjRef;
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typedef struct {
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bool isObjRef;
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union {
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ObjRef objRef;
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int number;
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} u;
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} StackSlot;
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ObjRef getIntObj(int val) {
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ObjRef intObject;
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unsigned int objSize = sizeof(ObjRef) + sizeof(int);
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if ((intObject = malloc(objSize)) == NULL) {
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perror("malloc");
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}
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*(int *) intObject->data = val;
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intObject->size = sizeof(int);
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return intObject;
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}
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int getValFromIntObj(ObjRef iref) {
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return *(int *) iref->data;
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}
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int getIntValfromStackSlot(StackSlot s) {
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if (s.isObjRef) {
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return *(int *) s.u.objRef->data;
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}
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return s.u.number;
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}
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void setValIntObj(ObjRef iref, int val) {
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iref->size = sizeof(int);
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*(int *) iref->data = val;
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}
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StackSlot stackSlotWithObjRef(ObjRef val) {
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StackSlot *stackSlot;
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stackSlot = malloc(sizeof(StackSlot));
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stackSlot->isObjRef = true;
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stackSlot->u.objRef = val;
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return *stackSlot;
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}
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StackSlot stackSlotWitchNumber(int val) {
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StackSlot *stackSlot;
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stackSlot = malloc(sizeof(StackSlot));
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stackSlot->isObjRef = false;
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stackSlot->u.number = val;
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return *stackSlot;
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}
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#endif
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