mirror of
https://github.com/gnustep/libs-base.git
synced 2025-04-25 09:41:15 +00:00
cc36fcd0ee
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@7189 72102866-910b-0410-8b05-ffd578937521
87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
/* Array definitions for the use of subclass implementations only
|
|
Copyright (C) 1993, 1994, 1996 Free Software Foundation, Inc.
|
|
|
|
Written by: Andrew Kachites McCallum <mccallum@gnu.ai.mit.edu>
|
|
Date: May 1993
|
|
|
|
This file is part of the GNUstep Base 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., 59 Temple Place, Suite 330, Boston, MA 02111 USA.
|
|
*/
|
|
|
|
#ifndef __ArrayPrivate_h_GNUSTEP_BASE_INCLUDE
|
|
#define __ArrayPrivate_h_GNUSTEP_BASE_INCLUDE
|
|
|
|
#include <base/IndexedCollectionPrivate.h>
|
|
|
|
#define DEFAULT_ARRAY_CAPACITY 2
|
|
#define DEFAULT_ARRAY_GROW_FACTOR 2
|
|
|
|
|
|
/* Routines that help with inserting and removing elements */
|
|
|
|
/* Assumes that _count has already been incremented to make room
|
|
for the hole. The data at _contents_array[_count-1] is not part
|
|
of the collection). */
|
|
static inline void
|
|
makeHoleAt(Array *self, unsigned index)
|
|
{
|
|
int i;
|
|
|
|
for (i = (self->_count)-1; i > index; i--)
|
|
self->_contents_array[i] = self->_contents_array[i-1];
|
|
}
|
|
|
|
/* Assumes that _count has not yet been decremented. The data at
|
|
_contents_array[_count-1] is part of the collection. */
|
|
static inline void
|
|
fillHoleAt(Array *self, unsigned index)
|
|
{
|
|
int i;
|
|
|
|
for (i = index; i < (self->_count)-1; i++)
|
|
self->_contents_array[i] = self->_contents_array[i+1];
|
|
}
|
|
|
|
/* These are the only two routines that change the value of the instance
|
|
variable _count, except for "-initWithType:capacity:" and "-empty" */
|
|
|
|
/* Should these be methods instead of functions? Doing so would make
|
|
them slower. */
|
|
|
|
/* Do this before adding an element */
|
|
static inline void
|
|
incrementCount(Array *self)
|
|
{
|
|
(self->_count)++;
|
|
if (self->_count == self->_capacity)
|
|
{
|
|
[self setCapacity:(self->_capacity) * ABS(self->_grow_factor)];
|
|
}
|
|
}
|
|
|
|
/* Do this after removing an element */
|
|
static inline void
|
|
decrementCount(Array *self)
|
|
{
|
|
(self->_count)--;
|
|
if (self->_grow_factor > 0
|
|
&& self->_count < (self->_capacity / self->_grow_factor))
|
|
{
|
|
[self setCapacity:(self->_capacity) / self->_grow_factor];
|
|
}
|
|
}
|
|
|
|
#endif /* __ArrayPrivate_h_GNUSTEP_BASE_INCLUDE */
|