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Implement firstObject, lastObject and enumeration methods.

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This commit is contained in:
Gregory John Casamento 2019-05-30 09:03:34 -04:00
parent 40146d95cf
commit 04711a4f11
1 changed files with 45 additions and 7 deletions
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52
Source/NSOrderedSet.m
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@ -94,6 +94,7 @@ static SEL rlSel;
NSOrderedSet_abstract_class = self;
NSOrderedSet_concrete_class = [GSOrderedSet class];
[NSMutableSet class];
[self registerAtExit];
}
}
@ -589,30 +590,67 @@ static SEL rlSel;
options:(NSEnumerationOptions)opts
usingBlock:(GSEnumeratorBlock)aBlock
{
[self subclassResponsibility: _cmd];
[[self objectsAtIndexes: indexSet] enumerateObjectsWithOptions: opts
usingBlock: aBlock];
}
- (void) enumerateObjectsUsingBlock:(GSEnumeratorBlock)aBlock
{
[self subclassResponsibility: _cmd];
[self enumerateObjectsWithOptions: 0 usingBlock: aBlock];
}
- (void) enumerateObjectsWithOptions:(NSEnumerationOptions)opts
usingBlock:(GSEnumeratorBlock)aBlock
{
[self subclassResponsibility: _cmd];
NSUInteger count = 0;
BLOCK_SCOPE BOOL shouldStop = NO;
BOOL isReverse = (opts & NSEnumerationReverse);
id<NSFastEnumeration> enumerator = self;
/* If we are enumerating in reverse, use the reverse enumerator for fast
* enumeration. */
if (isReverse)
{
enumerator = [self reverseObjectEnumerator];
count = ([self count] - 1);
}
{
GS_DISPATCH_CREATE_QUEUE_AND_GROUP_FOR_ENUMERATION(enumQueue, opts)
FOR_IN (id, obj, enumerator)
GS_DISPATCH_SUBMIT_BLOCK(enumQueueGroup, enumQueue, if (YES == shouldStop) {return;}, return, aBlock, obj, count, &shouldStop);
if (isReverse)
{
count--;
}
else
{
count++;
}
if (shouldStop)
{
break;
}
END_FOR_IN(enumerator)
GS_DISPATCH_TEARDOWN_QUEUE_AND_GROUP_FOR_ENUMERATION(enumQueue, opts)
}
}
- (id) firstObject
{
[self subclassResponsibility: _cmd];
return nil;
NSUInteger count = [self count];
if (count == 0)
return nil;
return [self objectAtIndex: 0];
}
- (id) lastObject
{
[self subclassResponsibility: _cmd];
return nil;
NSUInteger count = [self count];
if (count == 0)
return nil;
return [self objectAtIndex: 0];
}
- (id) objectAtIndex: (NSUInteger)index