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/* Implementation for Objective-C MappedCollector collection object
Copyright (C) 1993 R. Andrew McCallum <mccallum@cs.rochester.edu>
Dept. of Computer Science, U. of Rochester, Rochester, NY 14627
This file is part of the GNU Objective-C Collection library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <coll/MappedCollector.h>
#include <coll/Dictionary.h>
@implementation MappedCollector
- initCollection: (id <KeyedCollecting>)aDomain
map: (id <KeyedCollecting>)aMap
{
if (strcmp([aMap contentsDescription], [aDomain keyDescription]))
[self error:"map's contents are not the same as domain's keys"];
[super initDescription:[aDomain contentsDescription]
keyDescription:[aMap keyDescription]];
map = aMap;
domain = aDomain;
return self;
}
- (elt) elementAtKey: (elt)aKey
{
return [domain elementAtKey:[map elementAtKey:aKey]];
}
- (elt) replaceElementAtKey: (elt)aKey with: (elt)newElement
{
return [domain replaceElementAtKey:[map elementAtKey:aKey]
with:newElement];
}
- insertElement: (elt)newElement atKey: (elt)aKey
{
return [domain insertElement:newElement
atKey:[map elementAtKey:aKey]];
}
- (elt) removeElementAtKey: (elt)aKey
{
return [domain removeElementAtKey:[map elementAtKey:aKey]];
}
- (BOOL) includesKey: (elt)aKey
{
return [domain includesKey:[map elementAtKey:aKey]];
}
- withKeysAndContentsCall: (void(*)(const elt,elt))aFunc
whileTrue: (BOOL *)flag
{
void doIt(elt e)
{
elt domainKey = [map elementAtKey:e];
if ([domain includesKey:domainKey])
aFunc(e, [domain elementAtKey:domainKey]);
}
[map withKeysCall:doIt];
return self;
}
- (BOOL) getNextKey: (elt*)aKeyPtr content: (elt*)anElementPtr
withEnumState: (void**)enumState;
{
BOOL ret;
elt mapContent;
elt domainKey;
while ((ret = [map getNextKey:aKeyPtr content:&mapContent
withEnumState:enumState])
&& (![domain includesKey:(domainKey = [map elementAtKey:*aKeyPtr])]))
;
if (!ret)
return NO;
*anElementPtr = [domain elementAtKey:domainKey];
return YES;
}
- species
{
return [Dictionary class];
}
@end
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