/*

	Copyright(C) 2016, Red Hat, Inc., Stanislav Kozina

	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 3 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, see <http://www.gnu.org/licenses/>.

*/

#ifndef STACK_H_

#define	STACK_H_

typedef struct {

	unsigned int st_capacity; /* Total size of the stack */

	unsigned int st_count; /* Number of items stored */

	void **st_data; /* Stack itself */

} stack_t;

extern stack_t *stack_init(void);

extern void stack_destroy(stack_t *);

extern void stack_push(stack_t *, void *);

extern void *stack_pop(stack_t *);

extern void *stack_head(stack_t *);

extern void walk_stack(stack_t *, void (*)(void *, void *), void *);

extern void walk_stack_backward(stack_t *, void (*cb)(void *, void *), void *);

#endif /* STACK_H_ */