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#ifndef TOKEN_H
#define TOKEN_H
#include "util.h"
typedef enum TOKEN_TYPE {
TOKEN_TYPE_UNKNOWN,
TOKEN_TYPE_CHAR,
TOKEN_TYPE_STR,
TOKEN_TYPE_EXPR_END,
TOKEN_TYPE_SET,
TOKEN_TYPE_LGROUP,
TOKEN_TYPE_RGROUP,
TOKEN_TYPE_APPLY,
TOKEN_TYPE_LIST_DELIM,
TOKEN_TYPE_TAG,
TOKEN_TYPE_NAMESPACE_DELIM,
TOKEN_TYPE_LBLOCK,
TOKEN_TYPE_RBLOCK,
TOKEN_TYPE_RLIST,
TOKEN_TYPE_LLIST,
TOKEN_TYPE_ESC,
TOKEN_TYPE_KWD,
TOKEN_TYPE_INT
} token_type_t;
/* Token struct. */
typedef struct TOKEN {
/* Token type. */
token_type_t type;
/* Token value. */
char* val;
/* Next token. */
struct TOKEN* nxt;
} token_t;
/* Creates a token. */
token_t* token_init(int type, char val);
/*
Destroys a token.
- Frees all tokens contained in `nxt`.
- Make sure to set the `nxt` field of a parent token to `NULL`.
*/
void token_destroy(token_t* token);
/* Return pointer to the last token. */
token_t* token_last(token_t* token);
/* Add a character to the token value. */
void token_add_char(token_t*, char);
/* Print a token -- for debugging purposes. */
void token_print(token_t* token);
#endif
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