diff -r 000000000000 -r 59addced5e2a With.m
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/With.m	Fri May 02 12:49:43 2008 -0700
@@ -0,0 +1,34 @@
+//
+//  With.m
+//  MYUtilities
+//
+//  Copyright 2008 Jens Alfke. All rights reserved.
+//
+
+#import "With.h"
+#import "Logging.h"
+
+
+@interface NSObject (With)
+- (BOOL) endWith: (NSException*)x;
+@end
+
+
+void _catchWith( id with, NSException *x )
+{
+    Warn(@"Exception thrown from WITH(%@) block: %@",[with class],x);
+    if( [with respondsToSelector: @selector(endWith:)] ) {
+        if( ! [with endWith: x] )
+            @throw x;                           // propagate the exception if -endWith: returns NO
+    } else {
+        [with endWith];
+    }
+}
+
+
+
+@implementation NSAutoreleasePool (With)
++ (NSAutoreleasePool*) beginWith    {return [self new];}
+- (void) endWith                    {[self drain];}
+- (BOOL) endWith: (NSException*)x   {[self drain]; return YES;}
+@end
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