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/* Implementation for Objective-C MappedCollector collection object
Copyright (C) 1993 Free Software Foundation, Inc.
Written by: 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>
#include <coll/CollectionPrivate.h>
@implementation MappedCollector
/* This is the designated initializer for this class */
- initCollection: (id <KeyedCollecting>)aDomain
map: (id <KeyedCollecting>)aMap
{
if (strcmp([aMap contentEncoding], [aDomain keyEncoding]))
[self error:"map's contents are not the same as domain's keys"];
[super initEncoding:[aDomain contentEncoding]
keyEncoding:[aMap keyEncoding]];
_map = aMap;
_domain = aDomain;
return self;
}
/* Archiving must mimic the above designated initializer */
- _writeInit: (TypedStream*)aStream
{
[super _writeInit: aStream];
objc_write_object(aStream, _map);
objc_write_object(aStream, _domain);
return self;
}
- _readInit: (TypedStream*)aStream
{
[super _readInit: aStream];
objc_read_object(aStream, &_map);
objc_read_object(aStream, &_domain);
return self;
}
/* Empty copy must empty an allocCopy'ed version of self */
- emptyCopy
{
MappedCollector *copy = [super emptyCopy];
copy->_map = [_map emptyCopy];
copy->_domain = [_domain emptyCopy];
return copy;
}
/* This must work without sending any messages to content objects */
- empty
{
[_domain empty];
return self;
}
- (const char *) contentEncoding
{
return [_domain contentEncoding];
}
- (const char *) keyEncoding
{
return [_map keyEncoding];
}
- (int(*)(elt,elt)) comparisonFunction
{
return [_domain comparisonFunction];
}
- (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]];
}
- withKeyElementsAndContentElementsCall: (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 withKeyElementsCall: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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