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#ifndef FIFO_H
#define FIFO_H
#include <stddef.h>
#include "evalexpr.h"
struct list
{
struct token *data;
struct list *next;
};
struct fifo
{
struct list *head;
struct list *tail;
size_t size;
};
struct fifo *fifo_init(void);
size_t fifo_size(struct fifo *fifo);
void fifo_push(struct fifo *fifo, struct token *elt);
struct token *fifo_head(struct fifo *fifo);
void fifo_pop(struct fifo *fifo);
void fifo_clear(struct fifo *fifo);
void fifo_destroy(struct fifo *fifo);
#endif /* !FIFO_H */
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