initial drop of a few sources to start things out

1 files changed, 43 insertions, 0 deletions

diff --git a/Foundation/GTMGarbageCollection.h b/Foundation/GTMGarbageCollection.h
new file mode 100644
index 0000000..4a7ac56
--- /dev/null
+++ b/Foundation/GTMGarbageCollection.h
@@ -0,0 +1,43 @@
+//
+//  GTMGarbageCollection.h
+//
+//  Copyright 2007-2008 Google Inc.
+//
+//  Licensed under the Apache License, Version 2.0 (the "License"); you may not
+//  use this file except in compliance with the License.  You may obtain a copy
+//  of the License at
+// 
+//  http://www.apache.org/licenses/LICENSE-2.0
+// 
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+//  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+//  License for the specific language governing permissions and limitations under
+//  the License.
+//
+
+#import <Foundation/Foundation.h>
+
+// This allows us to easily move our code from GC to non GC.
+// They are no-ops unless we are require Leopard or above.
+// See 
+// http://developer.apple.com/documentation/Cocoa/Conceptual/GarbageCollection/index.html
+// for details.
+// General use would be
+// CFTypeRef type = ...
+// return [GTMNSMakeCollectable(type) autorelease];
+
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
+
+FOUNDATION_STATIC_INLINE id GTMNSMakeCollectable(CFTypeRef cf) { 
+  return NSMakeCollectable(cf); 
+}
+
+#else
+
+FOUNDATION_STATIC_INLINE id GTMNSMakeCollectable(CFTypeRef cf) { 
+  // NSMakeCollectable handles NULLs just fine and returns nil as expected.
+  return (id)cf;
+}
+
+#endif