PECocoaBackportsGlobal.h 2.7 KB

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  1. /*
  2. * Copyright (c) 2014 Petroules Corporation. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions are met:
  6. *
  7. * 1. Redistributions of source code must retain the above copyright notice, this
  8. * list of conditions and the following disclaimer.
  9. * 2. Redistributions in binary form must reproduce the above copyright notice,
  10. * this list of conditions and the following disclaimer in the documentation
  11. * and/or other materials provided with the distribution.
  12. *
  13. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  14. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  15. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  16. * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  17. * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  18. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  19. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  20. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  22. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23. */
  24. #ifndef __PECocoaBackportsGlobal__
  25. #define __PECocoaBackportsGlobal__
  26. #import <objc/runtime.h>
  27. CF_INLINE void class_addInstanceMethodIfNecessary(Class clazz, SEL realSelector, SEL fakeSelector) {
  28. if (!class_getInstanceMethod(clazz, realSelector)) {
  29. Method method = class_getInstanceMethod(clazz, fakeSelector);
  30. if (!class_addMethod(clazz, realSelector, method_getImplementation(method),
  31. method_getTypeEncoding(method))) {
  32. #if defined(DEBUG) && DEBUG
  33. NSLog(@"PECocoaBackports: error adding -[%@ %@] (-[%@ %@])",
  34. NSStringFromClass(clazz), NSStringFromSelector(fakeSelector),
  35. NSStringFromClass(clazz), NSStringFromSelector(realSelector));
  36. #endif
  37. } else {
  38. #if defined(DEBUG) && DEBUG
  39. NSLog(@"PECocoaBackports: added -[%@ %@] (-[%@ %@])",
  40. NSStringFromClass(clazz), NSStringFromSelector(fakeSelector),
  41. NSStringFromClass(clazz), NSStringFromSelector(realSelector));
  42. #endif
  43. }
  44. } else {
  45. #if defined(DEBUG) && DEBUG
  46. NSLog(@"PECocoaBackports: skipped adding -[%@ %@] (-[%@ %@]); already exists",
  47. NSStringFromClass(clazz), NSStringFromSelector(fakeSelector),
  48. NSStringFromClass(clazz), NSStringFromSelector(realSelector));
  49. #endif
  50. }
  51. }
  52. #endif // __PECocoaBackportsGlobal__