taggedNSPointers.m   [plain text]

// TEST_CFLAGS -framework Foundation

#include "test.h"
#include <objc/runtime.h>
#import <Foundation/Foundation.h>

#if OBJC_HAVE_TAGGED_POINTERS

void testTaggedNumber()
{
NSNumber *taggedNS = [NSNumber numberWithInt: 1234];
CFNumberRef taggedCF = (__bridge CFNumberRef)taggedNS;
int result;

testassert( CFGetTypeID(taggedCF) == CFNumberGetTypeID() );
testassert(_objc_getClassForTag(OBJC_TAG_NSNumber) == [taggedNS class]);

CFNumberGetValue(taggedCF, kCFNumberIntType, &result);
testassert(result == 1234);

testassert(_objc_isTaggedPointer(taggedCF));
testassert(_objc_getTaggedPointerTag(taggedCF) == OBJC_TAG_NSNumber);
testassert(_objc_makeTaggedPointer(_objc_getTaggedPointerTag(taggedCF), _objc_getTaggedPointerValue(taggedCF)) == taggedCF);

// do some generic object-y things to the taggedPointer instance
CFRetain(taggedCF);
CFRelease(taggedCF);

NSMutableDictionary *dict = [NSMutableDictionary dictionary];
[dict setObject: taggedNS forKey: @"fred"];
testassert(taggedNS == [dict objectForKey: @"fred"]);
[dict setObject: @"bob" forKey: taggedNS];
testassert([@"bob" isEqualToString: [dict objectForKey: taggedNS]]);

NSNumber *iM88 = [NSNumber numberWithInt:-88];
NSNumber *i12346 = [NSNumber numberWithInt: 12346];
NSNumber *i12347 = [NSNumber numberWithInt: 12347];

NSArray *anArray = [NSArray arrayWithObjects: iM88, i12346, i12347, nil];
testassert([anArray count] == 3);
testassert([anArray indexOfObject: i12346] == 1);

NSSet *aSet = [NSSet setWithObjects: iM88, i12346, i12347, nil];
testassert([aSet count] == 3);
testassert([aSet containsObject: i12346]);

[taggedNS performSelector: @selector(intValue)];
testassert(![taggedNS isProxy]);
testassert([taggedNS isKindOfClass: [NSNumber class]]);
testassert([taggedNS respondsToSelector: @selector(intValue)]);

(void)[taggedNS description];
}

int main()
{
PUSH_POOL {
testTaggedNumber(); // should be tested by CF... our tests are wrong, wrong, wrong.
} POP_POOL;

succeed(__FILE__);
}

// OBJC_HAVE_TAGGED_POINTERS
#else
// not OBJC_HAVE_TAGGED_POINTERS

// Tagged pointers not supported. Crash if an NSNumber actually
// is a tagged pointer (which means this test is out of date).

int main()
{
PUSH_POOL {
testassert(*(void **)(__bridge void *)[NSNumber numberWithInt:1234]);
} POP_POOL;

succeed(__FILE__);
}

#endif