functional_stack.h

/*
	fuse-google-drive: a fuse filesystem wrapper for Google Drive
	Copyright (C) 2012  James Cline

	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License version 2 as
 	published by the Free Software Foundation.

	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 _FUNCTIONAL_STACK_H
#define _FUNCTIONAL_STACK_H

#include "stack.h"
#include <stdlib.h>

union func_u {
	void (*func1)(void*);
	void (*func2)();

	int (*func3)(void*);
	int (*func4)();
};

struct fstack_item_t {
	void *data;
	union func_u *func;
	// value curresponds to the function in func_u
	char order;
};
int fstack_init(struct stack_t *stack, size_t size);
void fstack_destroy(struct stack_t *stack);

void *fstack_pop(struct stack_t *stack);
int fstack_push(struct stack_t *stack, void *data, union func_u *func, char order);

int fstack_resize(struct stack_t *stack, size_t size);

#endif