static Class _BlockClass()

in FBRetainCycleDetector/Layout/Blocks/FBBlockStrongLayout.m [103:115]

• 13 lines of code
• 3 McCabe index (conditional complexity)

static Class _BlockClass() {
  static dispatch_once_t onceToken;
  static Class blockClass;
  dispatch_once(&onceToken, ^{
    void (^testBlock)() = [^{} copy];
    blockClass = [testBlock class];
    while(class_getSuperclass(blockClass) && class_getSuperclass(blockClass) != [NSObject class]) {
      blockClass = class_getSuperclass(blockClass);
    }
    [testBlock release];
  });
  return blockClass;
}