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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@1 72102866-910b-0410-8b05-ffd578937521
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mccallum 1994-11-04 16:29:24 +00:00
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Source/objects/GapArrayPrivate.h Normal file
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/* GapArray definitions for the use of subclass implementations
Copyright (C) 1993,1994 Free Software Foundation, Inc.
Written by: R. Andrew McCallum <mccallum@gnu.ai.mit.edu>
Date: May 1993
Copyright (C) 1993,1994 Kresten Krab Thorup <krab@iesd.auc.dk>
Dept. of Mathematics and Computer Science, Aalborg U., Denmark
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.
*/
#ifndef __GapArrayPrivate_h_INCLUDE_GNU
#define __GapArrayPrivate_h_INCLUDE_GNU
#include <objects/stdobjects.h>
#include <objects/ArrayPrivate.h>
#include <assert.h>
#define GAP_TO_BASIC(INDEX) \
({ unsigned int __idx = (INDEX); \
__idx >= self->_gap_start \
? __idx+self->_gap_size : __idx; })
#define BASIC_TO_GAP(INDEX) \
({ unsigned int __idx = (INDEX); \
__idx < self->_gap_start \
? __idx : __idx-self->_gap_size; })
static inline void
gapMoveGapTo (GapArray* self, unsigned index)
{
int i;
assert (index <= self->_capacity);
if (index < self->_gap_start)
{
#ifndef STABLE_MEMCPY
int b = index + self->_gap_size;
for (i = self->_gap_start + self->_gap_size - 1; i >= b; i--)
self->_contents_array[i] = self->_contents_array[i - self->_gap_size];
#else
memcpy (self->_contents_array + index + self->_gap_size,
self->_contents_array + index,
self->_gap_start - index)
#endif
}
else
{
#ifndef STABLE_MEMCPY
for(i = self->_gap_start; i != index; i++)
self->_contents_array[i] = self->_contents_array[i - self->_gap_size];
#else
memcpy (self->_contents_array + self->_gap_start,
self->_contents_array + self->_gap_start + self->_gap_size,
index - self->_gap_start);
#endif
}
self->_gap_start = index;
}
static inline void
gapMakeHoleAt(GapArray *self, unsigned index)
{
gapMoveGapTo (self, index);
self->_gap_start += 1;
self->_gap_size -= 1;
}
static inline void
gapFillHoleAt(GapArray *self, unsigned index)
{
gapMoveGapTo (self, index);
self->_gap_size += 1;
}
#endif /* __GapArrayPrivate_h_INCLUDE_GNU */