1 files changed, 54 insertions, 0 deletions
diff --git a/Foundation/GTMObjC2Runtime.h b/Foundation/GTMObjC2Runtime.h
new file mode 100644
index 0000000..325a752
--- /dev/null
+++ b/Foundation/GTMObjC2Runtime.h
@@ -0,0 +1,54 @@
+//
+//  GTMObjC2Runtime.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 <objc/objc-runtime.h>
+#import <objc/Object.h>
+
+// These functions exist for code that we want to compile on both the < 10.5 
+// sdks and on the >= 10.5 sdks without warnings. It basically reimplements 
+// certain parts of the objc2 runtime in terms of the objc1 runtime. It is not 
+// a complete implementation as I've only implemented the routines I know we 
+// use. Feel free to add more as necessary.
+// These functions are not documented because they conform to the documentation
+// for the ObjC2 Runtime.
+
+#if OBJC_API_VERSION >= 2  // Only have optional and req'd keywords in ObjC2.
+#define AT_OPTIONAL @optional
+#define AT_REQUIRED @required
+#else
+#define AT_OPTIONAL
+#define AT_REQUIRED
+#endif
+
+#if MAC_OS_X_VERSION_MIN_REQUIRED < 1050
+#import "objc/Protocol.h"
+
+Class object_getClass(id obj);
+const char *class_getName(Class cls);
+BOOL class_conformsToProtocol(Class cls, Protocol *protocol);
+Class class_getSuperclass(Class cls);
+Method *class_copyMethodList(Class cls, unsigned int *outCount);
+SEL method_getName(Method m);
+void method_exchangeImplementations(Method m1, Method m2);
+IMP method_getImplementation(Method method);
+IMP method_setImplementation(Method method, IMP imp);
+struct objc_method_description protocol_getMethodDescription(Protocol *p,
+                                                             SEL aSel,
+                                                             BOOL isRequiredMethod,
+                                                             BOOL isInstanceMethod);
+#endif  // OBJC2_UNAVAILABLE