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/*
* CPCountedSet.j
* Foundation
*
* Created by .
* Copyright 2008, 280 North, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@import "CPObject.j"
@import "CPSet.j"
/*!
@class CPCountedSet
@ingroup foundation
@brief An mutable collection which may contain a specific object
numerous times.
*/
@implementation CPCountedSet : _CPConcreteMutableSet
{
Object _counts;
}
- (void)addObject:(id)anObject
{
if (!_counts)
_counts = {};
[super addObject:anObject];
var UID = [anObject UID];
if (_counts[UID] === undefined)
_counts[UID] = 1;
else
++_counts[UID];
}
- (void)removeObject:(id)anObject
{
if (!_counts)
return;
var UID = [anObject UID];
if (_counts[UID] === undefined)
return;
else
{
--_counts[UID];
if (_counts[UID] === 0)
{
delete _counts[UID];
[super removeObject:anObject];
}
}
}
- (void)removeAllObjects
{
[super removeAllObjects];
_counts = {};
}
/*
Returns the number of times anObject appears in the receiver.
@param anObject The object to check the count for.
*/
- (unsigned)countForObject:(id)anObject
{
if (!_counts)
_counts = {};
var UID = [anObject UID];
if (_counts[UID] === undefined)
return 0;
return _counts[UID];
}
/*
Eventually we should see what these are supposed to do, and then do that.
- (void)intersectSet:(CPSet)set
- (void)minusSet:(CPSet)set
- (void)unionSet:(CPSet)set
*/
@end
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