@@ -24,5 +24,31 @@
  * Resets the enumerator, so the next call to nextObject returns the first
  * object again.
  */
 - reset;
 @end
+
+/*
+ * This needs to be exactly like this because it's hardcoded in the compiler.
+ *
+ * We need this bad check to see if we already imported Cocoa, which defines
+ * this as well.
+ */
+#define of_fast_enumeration_state_t NSFastEnumerationState
+#ifndef NSINTEGER_DEFINED
+typedef struct __of_fast_enumeration_state {
+	unsigned long state;
+	id *itemsPtr;
+	unsigned long *mutationsPtr;
+	unsigned long extra[5];
+} of_fast_enumeration_state_t;
+#endif
+
+/**
+ * The OFFastEnumeration protocol needs to be implemented by all classes
+ * supporting fast enumeration.
+ */
+@protocol OFFastEnumeration
+- (int)countByEnumeratingWithState: (of_fast_enumeration_state_t*)state
+			   objects: (id*)objects
+			     count: (int)count;
+@end