#ifndef TOKEN_H
#define TOKEN_H

#include "expr.h"
#include "stream.h"

typedef enum {
	TOKEN_TYPE_INTEGER,
	TOKEN_TYPE_SYMBOL,
	TOKEN_TYPE_OPEN_PAREN,
	TOKEN_TYPE_CLOSE_PAREN,
} token_type_t;

typedef struct {
	token_type_t type;
	union {
		int64_t integer;
		symbol_t symbol;
	};
} token_t;

typedef enum { TOKEN_OK, TOKEN_FAILED } token_status_t;

token_status_t token_read(stream_t *input, token_t *out);

#endif