test/unwind.m

   1 #include "test.h"
   2 #include <objc/objc-exception.h>
   3 #include <Foundation/Foundation.h>
   4
   5 #if !defined(__OBJC2__)
   6
   7 int main()
   8 {
   9     succeed(__FILE__);
  10 }
  11
  12 #else
  13
  14 static int state;
  15
  16 @interface Foo : NSObject @end
  17
  18 @interface Foo (Unimplemented)
  19 +(void)method;
  20 @end
  21
  22
  23 @implementation Foo
  24
  25 -(void)check { state++; }
  26 +(void)check { testassert(!"caught class object, not instance"); }
  27
  28 static id exc;
  29
  30 static void handler(id unused __unused, void *ctx __unused)
  31 {
  32     testassert(state == 3); state++;
  33 }
  34
  35 +(BOOL) resolveClassMethod:(SEL)__unused name
  36 {
  37     testassert(state == 1); state++;
  38     objc_addExceptionHandler(&handler, 0);
  39     testassert(state == 2); state++;
  40     exc = [Foo new];
  41     @throw exc;
  42 }
  43
  44
  45 @end
  46
  47 int main()
  48 {
  49     int i;
  50
  51     // unwind exception and alt handler through objc_msgSend()
  52
  53     NSAutoreleasePool *pool = [NSAutoreleasePool new];
  54
  55     state = 0;
  56     for (i = 0; i < 100000; i++) {
  57         @try {
  58             testassert(state == 0); state++;
  59             [Foo method];
  60             testassert(0);
  61         } @catch (NSException *e) {
  62             testassert(0);
  63         } @catch (Foo *e) {
  64             testassert(e == exc);
  65             testassert(state == 4); state++;
  66             testassert(state == 5); [e check];  // state++
  67             [e release];
  68         } @catch (id e) {
  69             testassert(0);
  70         } @catch (...) {
  71             testassert(0);
  72         } @finally {
  73             testassert(state == 6); state++;
  74         }
  75         testassert(state == 7); state = 0;
  76     }
  77
  78     [pool drain];
  79
  80     succeed(__FILE__);
  81 }
  82
  83 #endif