132 lines
3.7 KiB
Objective-C
132 lines
3.7 KiB
Objective-C
/*
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Copyright (c) 2014, Inverse inc.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the Inverse inc. nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "SOGoSyncCacheObject.h"
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#import <Foundation/NSNull.h>
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#import <Foundation/NSString.h>
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#import <Foundation/NSValue.h>
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static Class NSNullK;
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@implementation SOGoSyncCacheObject
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+ (void) initialize
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{
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NSNullK = [NSNull class];
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}
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- (id) init
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{
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if ((self = [super init]))
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{
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_uid = nil;
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_sequence = nil;
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}
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return self;
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}
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+ (id) syncCacheObjectWithUID: (id) theUID sequence: (id) theSequence
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{
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id o;
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o = [[self alloc] init];
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[o setUID: [NSNumber numberWithInt: [theUID intValue]]];
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[o setSequence: ([theSequence isKindOfClass: NSNullK] ? theSequence : [NSNumber numberWithInt: [theSequence intValue]])];
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return [o autorelease];
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}
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- (void) dealloc
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{
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RELEASE(_uid);
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RELEASE(_sequence);
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[super dealloc];
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}
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- (id) uid
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{
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return [_uid description];
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}
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- (void) setUID: (id) theUID
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{
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ASSIGN(_uid, theUID);
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}
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- (id) sequence
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{
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return ([_sequence isKindOfClass: NSNullK] ? _sequence : [_sequence description]);
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}
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- (void) setSequence: (id) theSequence
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{
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ASSIGN(_sequence, theSequence);
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}
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- (NSComparisonResult) compareUID: (SOGoSyncCacheObject *) theSyncCacheObject
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{
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return [self->_uid compare: theSyncCacheObject->_uid];
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}
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//
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// We might get NSNull values here, so if both are NSNull instances,
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// we sort by UID. If both sequences are equal, we also sort by UID.
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//
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- (NSComparisonResult) compareSequence: (SOGoSyncCacheObject *) theSyncCacheObject
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{
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if ([self->_sequence isEqual: [NSNull null]] &&
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[theSyncCacheObject->_sequence isEqual: [NSNull null]])
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return [self compareUID: theSyncCacheObject];
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if (![self->_sequence isEqual: [NSNull null]] && [theSyncCacheObject->_sequence isEqual: [NSNull null]])
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return NSOrderedDescending;
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if ([self->_sequence isEqual: [NSNull null]] && ![theSyncCacheObject->_sequence isEqual: [NSNull null]])
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return NSOrderedAscending;
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// Must check this here, to avoid comparing NSNull objects
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if ([self->_sequence compare: theSyncCacheObject->_sequence] == NSOrderedSame)
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return [self compareUID: theSyncCacheObject];
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return [self->_sequence compare: theSyncCacheObject->_sequence];
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}
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- (NSString *) description
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{
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return [NSString stringWithFormat: @"%@-%@", _uid, _sequence];
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}
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@end
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