category-1.m

来自「用于进行gcc测试」· M 代码 · 共 44 行

/* Test class methods inside categories.  */
/* Author: Ziemowit Laski <[e-mail]>.  */
/* { dg-options "-lobjc" } */
/* { dg-do run } */

#include <objc/Object.h>

#ifdef __NEXT_RUNTIME__
#define SUPERCLASS superclass
#else
#define SUPERCLASS superClass
#endif

extern int strcmp(const char *s1, const char *s2);
extern void abort(void);
#define CHECK_IF(expr) if(!(expr)) abort()

@interface MyObject: Object
+ (Class)whatever1;
@end

@implementation MyObject
+ (Class)whatever1 { return [super SUPERCLASS]; }
@end

@interface MyObject (ThisWontCompile)
+(Class)whatever2;
@end
 
@implementation MyObject (ThisWontCompile)
+(Class)whatever2 { return [super SUPERCLASS]; }
@end

int main (int argc, const char * argv[])
{
  Class w1 = [MyObject whatever1];
  Class w2 = [MyObject whatever2];

  CHECK_IF(!strcmp(w1->name, "Object"));
  CHECK_IF(!strcmp(w2->name, "Object"));
  return 0;
}