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transmission/macosx/NSMutableArrayAdditions.mm
Mike Gelfand b7ba261359
Port macOS client to C++ (#1830)
* Rename all .m (Obj-C) files to .mm (Obj-C++)

* Fix build in Obj-C++ mode

* Fix Xcode build
2021-09-24 07:56:57 -05:00

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/******************************************************************************
* Copyright (c) 2011-2012 Transmission authors and contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#import "NSMutableArrayAdditions.h"
@implementation NSMutableArray (NSMutableArrayAdditions)
/*
Note: This assumes Apple implemented this as an array under the hood.
If the underlying data structure is a linked-list, for example, then this might be less
efficient than simply removing the object and re-adding it.
*/
- (void)moveObjectAtIndex:(NSUInteger)fromIndex toIndex:(NSUInteger)toIndex
{
if (fromIndex == toIndex)
{
return;
}
id object = self[fromIndex];
//shift objects - more efficient than simply removing the object and re-inserting the object
if (fromIndex < toIndex)
{
for (NSUInteger i = fromIndex; i < toIndex; ++i)
{
self[i] = self[i + 1];
}
}
else
{
for (NSUInteger i = fromIndex; i > toIndex; --i)
{
self[i] = self[i - 1];
}
}
self[toIndex] = object;
}
@end