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/* $Id: stack.h,v 1.2 2005/02/24 00:57:33 ellson Exp $ $Revision: 1.2 $ */
/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
#ifdef __cplusplus
extern "C" {
#endif
#ifndef STACK_H
#define STACK_H
#include <render.h>
typedef struct {
Agnode_t *top;
int sz;
} nstack_t;
extern nstack_t *mkStack(void);
extern void stackPush(nstack_t * s, Agnode_t * n);
extern Agnode_t *stackPop(nstack_t * s);
extern int stackSize(nstack_t * s);
extern int stackCheck(nstack_t * s, Agnode_t * n);
extern void freeStack(nstack_t * s);
#define top(sp) ((sp)->top)
#ifdef DEBUG
extern void printStack(nstack_t *);
#endif
#endif
#ifdef __cplusplus
}
#endif
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