/*

 * This file is part of ltrace.

 * Copyright (C) 2011,2012 Petr Machata, Red Hat Inc.

 *

 * 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 St, Fifth Floor, Boston, MA

 * 02110-1301 USA

 */

#ifndef ZERO_H

#define ZERO_H

#include "forward.h"

/* This returns a pre-built "zero" node without argument.  Share, but

   don't free.  */

struct expr_node *expr_node_zero(void);

/* This builds a new "zero" node with EXPR as argument.  EXPR is owned

 * by the built node if OWN.  Returns NULL if something failed.  */

struct expr_node *build_zero_w_arg(struct expr_node *expr, int own);

#endif /* ZERO_H */