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#ifndef COMMAND_LEXER_H
#define COMMAND_LEXER_H
/* enum TOKENS: the set of tokens that can be recognized by yylex
* -------------
* SET: "set"
* UNSET: for future expansion
* BIND: for future expansion
* MACRO: for future expansion
* BOOLEAN: yes or no
* NUMBER: a series of digits
* IDENTIFIER: a valid identifier (letter followed by letters or numbers)
* COMMAND: a recognized command (for future expansion)
* STRING: a quoted-string.
* EOL: end of line
*/
enum TOKENS {
SET = 255,
UNSET,
BIND,
MACRO,
SHELL,
BANG,
BOOLEAN,
NUMBER,
IDENTIFIER,
COMMAND,
STRING,
EOL
};
/* yylex: retreive the next token from the current scan buffer
* --------------
* return: an integer value representing the token type (enum TOKEN). 0 when
* no more input.
*/
int yylex(void);
/* get_token: Get the scanned token. This value will change the next time yylex is called
* --------------
*/
const char *get_token(void);
#endif
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