NSDictionary(OODeepCopy) Category Reference

Instance Methods
(id)	- ooDeepCopyWithSharedObjects: [implementation]

Detailed Description

Definition at line 224 of file OODeepCopy.m.

Method Documentation

ooDeepCopyWithSharedObjects:

- (id) ooDeepCopyWithSharedObjects: (NSMutableSet *) objects

implementation

Definition at line 31 of file OODeepCopy.m.

                                  :(NSMutableSet *)objects
{
    NSUInteger              i, count;
    id                      *keys = NULL;
    id                      *values = NULL;
    NSDictionary            *result = nil;
    BOOL                    tempObjects = NO;
    
    count = [self count];
    if (count == 0)  return [[NSDictionary dictionary] retain];
    
    keys = malloc(sizeof *keys * count);
    values = malloc(sizeof *values * count);
    if (keys == NULL || values == NULL)
    {
        free(keys);
        free(values);
        [NSException raise:NSMallocException format:@"Failed to allocate space for %lu objects in %s.", (unsigned long)count, __PRETTY_FUNCTION__];
    }
    
    // Ensure there's an objects set even if passed nil.
    if (objects == nil)
    {
        objects = [[NSMutableSet alloc] init];
        tempObjects = YES;
    }
    
    @try
    {
        i = 0;
        id key = nil;
        // Deep copy members.
        foreachkey (key, self)
        {
            keys[i] = [key ooDeepCopyWithSharedObjects:objects];
            values[i] = [[self objectForKey:key] ooDeepCopyWithSharedObjects:objects];
            i++;
        }
        
        // Make NSDictionary of results.
        result = [[NSDictionary alloc] initWithObjects:values forKeys:keys count:count];
    }
    @finally
    {
        // Release objects.
        for (i = 0; i < count; i++)
        {
            [keys[i] release];
            [values[i] release];
        }
        
        free(keys);
        free(values);
        if (tempObjects)  [objects release];
    }
    
    // Collections are not reused because comparing them is arbitrarily slow.
    return result;
}

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The documentation for this category was generated from the following file:

• src/Core/OODeepCopy.m