1 files changed, 47 insertions, 0 deletions
diff --git a/Objective-C/NSObject-ObjectiveCLWrapperLink.m b/Objective-C/NSObject-ObjectiveCLWrapperLink.m
new file mode 100644
index 0000000..5dac3a7
--- /dev/null
+++ b/Objective-C/NSObject-ObjectiveCLWrapperLink.m
@@ -0,0 +1,47 @@
+/* -*- mode: objc; coding: utf-8 -*- */
+
+#import "NSObject-ObjectiveCLWrapperLink.h"
+#import <Foundation/NSDictionary.h>
+#import <Foundation/NSObject.h>
+#import <Foundation/NSString.h>
+
+static NSMutableDictionary *instance_wrappers = NULL;
+
+void
+objcl_initialise_instance_wrappers (void)
+{
+  if (!instance_wrappers)
+    instance_wrappers = [[NSMutableDictionary alloc] init];
+}
+
+void
+objcl_shutdown_instance_wrappers (void)
+{
+  if (instance_wrappers)
+    {
+      [instance_wrappers release];
+      instance_wrappers = NULL;
+    }
+}
+
+@implementation NSObject (ObjectiveCLWrapperLink)
+-(const char *) __objectiveCLWrapperID
+{
+  NSString *string = [instance_wrappers objectForKey: self];
+  if (string != nil)
+    return [string UTF8String];
+  else
+    return NULL;
+}
+
+-(void) __setObjectiveCLWrapperID: (const char *)wrapper_id
+{
+  [instance_wrappers setObject: [NSString stringWithUTF8String: wrapper_id]
+                     forKey: self];
+}
+
+-(void) __removeObjectiveCLWrapperID
+{
+  [instance_wrappers removeObjectForKey: self];
+}
+@end /* NSObject (ObjectiveCL) */