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#ifndef INCLUDED_QUEUE_H_
#define INCLUDED_QUEUE_H_
#include "../root/root.h"
typedef struct
{
char *d_memory;
char *d_memory_end;
char *d_read;
char *d_write;
}
Queue;
void queue_construct(register Queue *qp, char const *str);
static inline void queue_destruct(register Queue *qp);
int queue_get(register Queue *qp);
void queue_push(register Queue *qp, size_t extra_length, char const *info);
void queue_unget(register Queue *qp, int ch); /* must have room */
/*
Internal use only. Not used outside of this directory, needed here
to allow proper compilation of the static inline functions below
*/
#include <stdlib.h>
#include <stdio.h>
/* public interface continues from here */
static inline int queue_peek(register Queue *qp)
{
return qp->d_read != qp->d_write ? *qp->d_read : EOF;
}
static inline void queue_destruct(register Queue *qp)
{
free(qp->d_memory);
}
#endif
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