51 lines
945 B
C
51 lines
945 B
C
/*
|
|
* Copyright (c) 2026, Chloe M.
|
|
* Provided under the BSD-3 clause
|
|
*/
|
|
|
|
#ifndef CESCAL_TOKBUF_H
|
|
#define CESCAL_TOKBUF_H 1
|
|
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include "cescal/token.h"
|
|
|
|
#define TOKBUF_CAP 4
|
|
|
|
struct tokbuf {
|
|
struct token buf[TOKBUF_CAP];
|
|
uint8_t head;
|
|
};
|
|
|
|
/*
|
|
* Initialize the token buffer
|
|
*
|
|
* @tokbuf: Token buffer to initialize
|
|
*
|
|
* Returns zero on success
|
|
*/
|
|
int tokbuf_init(struct tokbuf *tokbuf);
|
|
|
|
/*
|
|
* Push a token onto the token buffer
|
|
*
|
|
* @tokbuf: Token buffer to push to
|
|
* @tok: Token to push
|
|
*
|
|
* Returns zero on success
|
|
*/
|
|
int tokbuf_push(struct tokbuf *tokbuf, struct token *tok);
|
|
|
|
/*
|
|
* Peek at the token buffer from a negative offset backwards
|
|
*
|
|
* @tokbuf: Token buffer to read from
|
|
* @noff: Negative offset
|
|
* @res: Result is written here
|
|
*
|
|
* Returns zero on success
|
|
*/
|
|
int tokbuf_noff(struct tokbuf *tokbuf, size_t noff, struct token *res);
|
|
|
|
#endif /* !CESCAL_TOKBUF_H */
|