test/unwind.m

   1 // TEST_CONFIG
   2
   3 #include "test.h"
   4 #include <objc/objc-exception.h>
   5 #include <Foundation/NSObject.h>
   6
   7 #if !defined(__OBJC2__)
   8
   9 int main()
  10 {
  11     succeed(__FILE__);
  12 }
  13
  14 #else
  15
  16 static int state;
  17
  18 @interface Foo : NSObject @end
  19 @interface Bar : NSObject @end
  20
  21 @interface Foo (Unimplemented)
  22 +(void)method;
  23 @end
  24
  25 @implementation Bar @end
  26
  27 @implementation Foo
  28
  29 -(void)check { state++; }
  30 +(void)check { testassert(!"caught class object, not instance"); }
  31
  32 static id exc;
  33
  34 static void handler(id unused, void *ctx) __attribute__((used));
  35 static void handler(id unused __unused, void *ctx __unused)
  36 {
  37     testassert(state == 3); state++;
  38 }
  39
  40 +(BOOL) resolveClassMethod:(SEL)__unused name
  41 {
  42     testassert(state == 1); state++;
  43 #if !TARGET_OS_EMBEDDED  &&  !TARGET_OS_IPHONE  &&  !TARGET_IPHONE_SIMULATOR
  44     objc_addExceptionHandler(&handler, 0);
  45     testassert(state == 2);
  46 #else
  47     state++;  // handler would have done this
  48 #endif
  49     state++;
  50     exc = [Foo new];
  51     @throw exc;
  52 }
  53
  54
  55 @end
  56
  57 int main()
  58 {
  59     int i;
  60
  61     // unwind exception and alt handler through objc_msgSend()
  62
  63     PUSH_POOL {
  64
  65         state = 0;
  66         for (i = 0; i < 100000; i++) {
  67             @try {
  68                 testassert(state == 0); state++;
  69                 [Foo method];
  70                 testassert(0);
  71             } @catch (Bar *e) {
  72                 testassert(0);
  73             } @catch (Foo *e) {
  74                 testassert(e == exc);
  75                 testassert(state == 4); state++;
  76                 testassert(state == 5); [e check];  // state++
  77                 RELEASE_VAR(exc);
  78             } @catch (id e) {
  79                 testassert(0);
  80             } @catch (...) {
  81                 testassert(0);
  82             } @finally {
  83                 testassert(state == 6); state++;
  84             }
  85             testassert(state == 7); state = 0;
  86         }
  87
  88     } POP_POOL;
  89
  90     succeed(__FILE__);
  91 }
  92
  93 #endif