Shorthand for declaring "abstract" methods in ObjC

gistfile1.m

// Abstract.h

static inline NSException *UnimplementedMethodException(SEL cmd, Class klass) {
  NSString *reason =
      [NSString stringWithFormat:@"Implementation missing for abstract method: %@; class: %@",
          NSStringFromSelector(cmd), NSStringFromClass(klass)];
  return [NSException exceptionWithName:NSInternalInconsistencyException
                                 reason:reason
                               userInfo:nil];
}

#define ABSTRACT_UNIMPLEMENTED @throw UnimplementedMethodException(_cmd, [self class]);


// MyBaseClass.m

#import "Abstract.h"

@implementation MyBaseClass

- (void)abstractMethod { ABSTRACT_UNIMPLEMENTED }
- (void)anotherAbstractMethod { ABSTRACT_UNIMPLEMENTED }
// etc.

@end