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/* XTrkCad - Model Railroad CAD
* Copyright (C) 2005 Dave Bullis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef DYNARR_H_SEEN
#define DYNARR_H_SEEN
typedef struct {
int cnt;
int max;
void * ptr;
} dynArr_t;
#define DYNARR_APPEND(T,DA,INCR) \
{ if ((DA).cnt >= (DA).max) { \
(DA).max += INCR; \
(DA).ptr = realloc( (DA).ptr, (DA).max * sizeof *(T*)NULL ); \
if ( (DA).ptr == NULL ) \
abort(); \
} \
(DA).cnt++; }
#define DYNARR_ADD(T,DA,INCR) DYNARR_APPEND(T,DA,INCR)
#define DYNARR_LAST(T,DA) \
(((T*)(DA).ptr)[(DA).cnt-1])
#define DYNARR_N(T,DA,N) \
(((T*)(DA).ptr)[N])
#define DYNARR_RESET(T,DA) \
(DA).cnt=0
#define DYNARR_SET(T,DA,N) \
{ if ((DA).max < N) { \
(DA).max = N; \
(DA).ptr = realloc( (DA).ptr, (DA).max * sizeof *(T*)NULL ); \
if ( (DA).ptr == NULL ) \
abort(); \
} \
(DA).cnt = 0; }
#endif /* DYNARR_H_SEEN */
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