forked from OSchip/llvm-project
71 lines
1.6 KiB
Objective-C
71 lines
1.6 KiB
Objective-C
#import <Foundation/Foundation.h>
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#include <unistd.h>
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@interface MyString : NSObject {
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NSString *str;
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NSDate *date;
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BOOL _desc_pauses;
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}
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@property BOOL descriptionPauses;
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- (id)initWithNSString:(NSString *)string;
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@end
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@implementation MyString
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@synthesize descriptionPauses = _desc_pauses;
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- (id)initWithNSString:(NSString *)string
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{
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if (self = [super init])
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{
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str = [NSString stringWithString:string];
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date = [NSDate date];
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}
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self.descriptionPauses = NO;
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return self;
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}
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- (void)dealloc
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{
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[date release];
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[str release];
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[super dealloc];
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}
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- (NSString *)description
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{
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if (self.descriptionPauses)
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{
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printf ("\nAbout to sleep.\n");
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usleep(100000);
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}
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return [str stringByAppendingFormat:@" with timestamp: %@", date];
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}
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@end
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int main (int argc, char const *argv[])
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{
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NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
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NSString *str = [NSString stringWithFormat:@"Hello from '%s'", argv[0]];
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NSLog(@"NSString instance: %@", str);
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MyString *my = [[MyString alloc] initWithNSString:str];
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NSLog(@"MyString instance: %@", [my description]);
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my.descriptionPauses = YES;
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id str_id = str; // Set break point at this line.
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SEL sel = @selector(length);
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BOOL responds = [str respondsToSelector:sel];
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printf("sizeof(id) = %zu\n", sizeof(id));
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printf("sizeof(Class) = %zu\n", sizeof(Class));
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printf("sizeof(SEL) = %zu\n", sizeof(SEL));
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printf("[str length] = %zu\n", (size_t)[str length]);
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printf("str = '%s'\n", [str cStringUsingEncoding: [NSString defaultCStringEncoding]]);
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[pool release];
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return 0;
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}
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