try-catch-1.m

Mac OS X 10.4.9 for x86 Source Code gcc 实现源代码

/* Test if the compiler accepts @throw / @try..@catch..@finally syntax.  */
/* Developed by Ziemowit Laski <[e-mail]>.  */
/* { dg-options "-fobjc-exceptions" } */
/* { dg-do compile } */

#include <objc/Object.h>
#include <stdio.h>
#include <setjmp.h>

@interface Frob: Object
@end

@implementation Frob: Object
@end

static int exc_control = 0;

int proc() {
  if(exc_control) {
    printf ("Throwing (%d)... ", exc_control);
    @throw [Frob new];
  }
  return 1;
}

int foo()
{
        @try {
                return proc();
        }
        @catch (Frob* ex) {
		if(exc_control > 1) {
		  printf("Rethrowing (%d)... ", exc_control);
		  @throw;
		}
		return 0;
        }
	@finally {
		printf("In @finally block (%d)... ", exc_control);
	}
}