/* stringlist.h header file */

/* function declarations */
 
void addToEnd(struct list, char *);
void addToFront(struct list, char *);
void setContents(struct node *, char *);
void setNext(struct node *, struct node);
void setPrev(struct node *, struct node);
char *getContents(struct node *);
struct node getNext(struct node *);
struct node getPrev(struct node *);
struct node makeNode(char *, struct node *, struct node *);
void advance(struct list);
int atEnd(struct list);
void printList(struct list);

struct node {        /* our behind the scenes node struct */
	char *contents;    /* contents of the node */
	struct node *next; /* pointer to the next node */
	struct node *prev; /* pointer to the previous node */
}; /* struct node */
 	
struct list {           /* wrapper struct (for extra fun) */
	struct node *current; /* pointer to our current node */
	struct node *front;   /* pointer to the front of the list */
	struct node *back;    /* pointer to the back of the list */
	int len;              /* the length of our list */
}; /* struct list */