stack.h

/*****************************************************************************
*                                                                            *
*  ------------------------------- stack.h --------------------------------  *
*                                                                            *
*****************************************************************************/

#ifndef STACK_H
#define STACK_H

#include <stdlib.h>

#include "list.h"

/*****************************************************************************
*                                                                            *
*  Implement stacks as linked lists.                                         *
*                                                                            *
*****************************************************************************/

typedef List Stack;

/*****************************************************************************
*                                                                            *
*  --------------------------- Public Interface ---------------------------  *
*                                                                            *
*****************************************************************************/

#define stack_init list_init

#define stack_destroy list_destroy

int stack_push(Stack *stack, const void *data);

int stack_pop(Stack *stack, void **data);

#define stack_peek(stack) ((stack)->head == NULL ? NULL : (stack)->head->data)

#define stack_size list_size

#endif