Chapter 19.5

1 files changed, 25 insertions, 3 deletions

diff --git a/clox/src/memory.c b/clox/src/memory.c
index ead60c8..169d846 100644
--- a/clox/src/memory.c
+++ b/clox/src/memory.c
@@ -1,14 +1,36 @@
 #include <stdlib.h>
 
 #include "memory.h"
+#include "vm.h"
 
-void* reallocate(void* pointer, size_t oldSize, size_t newSize) {
+void *reallocate(void *pointer, size_t oldSize, size_t newSize) {
   if (newSize == 0) {
     free(pointer);
     return NULL;
   }
 
-  void* result = realloc(pointer, newSize);
-  if (result == NULL) exit(1);
+  void *result = realloc(pointer, newSize);
+  if (result == NULL)
+    exit(1);
   return result;
 }
+
+static void freeObject(Obj *object) {
+  switch (object->type) {
+  case OBJ_STRING: {
+    ObjString *string = (ObjString *)object;
+    FREE_ARRAY(char, string->chars, string->length + 1);
+    FREE(ObjString, object);
+    break;
+  }
+  }
+}
+
+void freeObjects() {
+  Obj *object = vm.objects;
+  while (object != NULL) {
+    Obj *next = object->next;
+    freeObject(object);
+    object = next;
+  }
+}