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/* Concrete implementation of NSDictionary based on GNU Dictionary class
Copyright (C) 1995 Free Software Foundation, Inc.
Written by: R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
Date: April 1995
This file is part of the GNU Objective C Class 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 <Foundation/NSGDictionary.h>
#include <objects/NSDictionary.h>
#include <objects/behavior.h>
#include <objects/Dictionary.h>
#include <objects/eltfuncs.h>
#include <Foundation/NSUtilities.h>
#include <Foundation/NSString.h>
@interface NSGDictionaryKeyEnumerator : NSEnumerator
{
NSDictionary *dictionary;
void *enum_state;
}
@end
@implementation NSGDictionaryKeyEnumerator
- initWithDictionary: (NSDictionary*)d
{
[super init];
dictionary = d;
[dictionary retain];
enum_state = 0;
return self;
}
- nextObject
{
elt k, c;
if ([dictionary getNextKey:&k content:&c withEnumState:&enum_state])
return k.id_u;
else
return nil;
}
- (void) dealloc
{
[dictionary release];
[super dealloc];
}
@end
@interface NSGDictionaryObjectEnumerator : NSGDictionaryKeyEnumerator
@end
@implementation NSGDictionaryObjectEnumerator
- nextObject
{
elt k, c;
if ([dictionary getNextKey:&k content:&c withEnumState:&enum_state])
return c.id_u;
else
return nil;
}
@end
@implementation NSGDictionary
+ (void) initialize
{
static int done = 0;
if (!done)
{
done = 1;
class_add_behavior([NSGDictionary class], [Dictionary class]);
}
}
/* This is the designated initializer */
- initWithObjects: (id*)objects
forKeys: (NSString**)keys
count: (unsigned)count
{
char * content_encoding = @encode(id);
char * key_encoding = @encode(id);
CALL_METHOD_IN_CLASS([KeyedCollection class], initWithType:keyType:,
content_encoding, key_encoding);
_contents_hash =
coll_hash_new(POWER_OF_TWO(count),
elt_get_hash_function(key_encoding),
elt_get_comparison_function(key_encoding));
_comparison_function = elt_get_comparison_function(content_encoding);
while (count--)
{
[keys[count] retain];
[objects[count] retain];
coll_hash_add(&_contents_hash, keys[count], objects[count]);
}
return self;
}
/*
Comes from Dictionary.m
- (unsigned) count
*/
- objectForKey: (NSString*)aKey
{
elt ret_nil(arglist_t a)
{
return nil;
}
return [self elementAtKey:aKey ifAbsentCall:ret_nil].id_u;
}
- (NSEnumerator*) keyEnumerator
{
return [[[NSGDictionaryKeyEnumerator alloc] initWithDictionary:self]
autorelease];
}
- (NSEnumerator*) objectEnumerator
{
return [[[NSGDictionaryObjectEnumerator alloc] initWithDictionary:self]
autorelease];
}
@end
@implementation NSGMutableDictionary
+ (void) initialize
{
static int done = 0;
if (!done)
{
done = 1;
class_add_behavior([NSGMutableDictionary class], [NSGDictionary class]);
}
}
/* This is the designated initializer */
/* Comes from Dictionary.m
- initWithCapacity: (unsigned)numItems
*/
- (void) setObject:anObject forKey:(NSString *)aKey
{
[self putElement:anObject atKey:aKey];
}
- (void) removeObjectForKey:(NSString *)aKey
{
elt do_nothing (arglist_t a)
{
return 0;
}
[self removeElementAtKey:aKey ifAbsentCall:do_nothing];
}
@end
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