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/*
* utils.h
*
* Copyright (C) 2009 Hector Martin <hector@marcansoft.com>
* Copyright (C) 2009 Nikias Bassen <nikias@gmx.li>
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 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 General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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 UTILS_H
#define UTILS_H
struct collection {
void **list;
int capacity;
};
void collection_init(struct collection *col);
void collection_add(struct collection *col, void *element);
void collection_remove(struct collection *col, void *element);
int collection_count(struct collection *col);
void collection_free(struct collection *col);
void collection_copy(struct collection *dest, struct collection *src);
#define MERGE_(a,b) a ## _ ## b
#define LABEL_(a,b) MERGE_(a, b)
#define UNIQUE_VAR(a) LABEL_(a, __LINE__)
#define FOREACH(var, col) \
do { \
int UNIQUE_VAR(_iter); \
for(UNIQUE_VAR(_iter)=0; UNIQUE_VAR(_iter)<(col)->capacity; UNIQUE_VAR(_iter)++) { \
if(!(col)->list[UNIQUE_VAR(_iter)]) continue; \
var = (col)->list[UNIQUE_VAR(_iter)];
#define ENDFOREACH \
} \
} while(0);
#endif
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