58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/* 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 */
|
|
#ifndef LLLEX_H_
|
|
#define LLLEX_H_
|
|
|
|
#include "em_label.h"
|
|
#include "em_arith.h"
|
|
|
|
/* Structure to store a string constant
|
|
*/
|
|
struct string {
|
|
arith s_length; /* length of a string */
|
|
char *s_str; /* the string itself */
|
|
label s_lab; /* data label of string */
|
|
};
|
|
|
|
/* Structure to store a real constant
|
|
*/
|
|
struct real {
|
|
char *r_real; /* string representation of real */
|
|
struct real *r_inverse; /* the inverse of this real */
|
|
label r_lab; /* data label of real */
|
|
};
|
|
|
|
/* 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 */
|
|
struct real *tk_real; /* REAL */
|
|
struct def *tk_def; /* only used in parse tree node */
|
|
arith *tk_set; /* only used in parse tree node */
|
|
label tk_lab; /* only used in parse tree node */
|
|
} tk_data;
|
|
};
|
|
|
|
#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_SLA tk_data.tk_str->s_lab
|
|
#define TOK_INT tk_data.tk_int
|
|
#define TOK_REL tk_data.tk_real->r_real
|
|
#define TOK_RIV tk_data.tk_real->r_inverse
|
|
#define TOK_RLA tk_data.tk_real->r_lab
|
|
|
|
extern struct token dot, aside;
|
|
extern struct type *toktype, *asidetype;
|
|
extern int tokenseen;
|
|
|
|
#define ASIDE aside.tk_symb
|
|
|
|
void CheckForLineDirective(void);
|
|
int LLlex(void);
|
|
|
|
#endif
|