47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/*
|
|
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
|
|
* See the copyright notice in the ACK home directory, in the file "Copyright".
|
|
*
|
|
* Author: Ceriel J.H. Jacobs
|
|
*/
|
|
|
|
/* T O K E N D E S C R I P T O R D E F I N I T I O N */
|
|
|
|
/* $Header$ */
|
|
|
|
/* Structure to store a string constant
|
|
*/
|
|
struct string {
|
|
unsigned s_length; /* length of a string */
|
|
char *s_str; /* the string itself */
|
|
};
|
|
|
|
/* Token structure. Keep it small, as it is part of a parse-tree node
|
|
*/
|
|
struct token {
|
|
short tk_symb; /* token itself */
|
|
unsigned short tk_lineno; /* linenumber on which it occurred */
|
|
union {
|
|
struct idf *tk_idf; /* IDENT */
|
|
struct string *tk_str; /* STRING */
|
|
arith tk_int; /* INTEGER */
|
|
char *tk_real; /* REAL */
|
|
arith *tk_set; /* only used in parse tree node */
|
|
struct def *tk_def; /* only used in parse tree node */
|
|
label tk_lab; /* only used in parse tree node */
|
|
} tk_data;
|
|
};
|
|
|
|
typedef struct token t_token;
|
|
|
|
#define TOK_IDF tk_data.tk_idf
|
|
#define TOK_STR tk_data.tk_str->s_str
|
|
#define TOK_SLE tk_data.tk_str->s_length
|
|
#define TOK_INT tk_data.tk_int
|
|
#define TOK_REL tk_data.tk_real
|
|
|
|
extern t_token dot, aside;
|
|
extern struct type *toktype;
|
|
|
|
#define DOT dot.tk_symb
|
|
#define ASIDE aside.tk_symb
|