diff options
Diffstat (limited to 'Source/SPArrayAdditions.h')
| -rw-r--r-- | Source/SPArrayAdditions.h | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/Source/SPArrayAdditions.h b/Source/SPArrayAdditions.h index e08bfa33..abeec095 100644 --- a/Source/SPArrayAdditions.h +++ b/Source/SPArrayAdditions.h @@ -27,9 +27,41 @@ static inline id NSArrayObjectAtIndex(NSArray *self, NSUInteger i) return (id)CFArrayGetValueAtIndex((CFArrayRef)self, (long)i); } -static inline void NSMutableArrayAddObject(NSArray *self, id anObject) +/** + * Set up a static function to allow fast mutable array insertion using + * cached selectors. + * At least in 10.7, inserting items into an array at a known point + * using NSMutableArray methods appears to be the fastest way of adding + * items to a CF/NSMutableArray. + */ +static inline void NSMutableArrayInsertObject(NSMutableArray *self, id anObject, NSUInteger anIndex) { - CFArrayAppendValue((CFMutableArrayRef)self, anObject); + typedef id (*NSMutableArrayInsertObjectPtr)(NSMutableArray*, SEL, id, NSUInteger); + static NSMutableArrayInsertObjectPtr cachedMethodPointer; + static SEL cachedSelector; + + if (!cachedSelector) cachedSelector = @selector(insertObject:atIndex:); + if (!cachedMethodPointer) cachedMethodPointer = (NSMutableArrayInsertObjectPtr)[self methodForSelector:cachedSelector]; + + cachedMethodPointer(self, cachedSelector, anObject, anIndex); +} +/** + * Set up a static function to allow fast mutable array insertion using + * cached selectors. + * At least in 10.7, adding items to an array using NSMutableArray methods + * appears to be the fastest approach to adding items to a CF/NSMutableArray; + * only NSMutableArrayInsertObject is faster if the position is known. + */ +static inline void NSMutableArrayAddObject(NSMutableArray *self, id anObject) +{ + typedef id (*NSMutableArrayAddObjectPtr)(NSMutableArray*, SEL, id); + static NSMutableArrayAddObjectPtr cachedMethodPointer; + static SEL cachedSelector; + + if (!cachedSelector) cachedSelector = @selector(addObject:); + if (!cachedMethodPointer) cachedMethodPointer = (NSMutableArrayAddObjectPtr)[self methodForSelector:cachedSelector]; + + cachedMethodPointer(self, cachedSelector, anObject); } static inline void NSMutableArrayReplaceObject(NSArray *self, CFIndex idx, id anObject) |