54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
|
/*
|
||
|
|
* Bob Denny 28-Aug-82 Remove reference to FILE *lexin to
|
||
|
|
* eliminate dependency on standard I/O library. Only
|
||
|
|
* lexgetc() used it, and it's there now.
|
||
|
|
* Add EOF definition for standalone uses.
|
||
|
|
* Corrected comment for llnxtmax.
|
||
|
|
*
|
||
|
|
* Scott Guthery 20-Nov-83 Adapt for IBM PC & DeSmet C. Removed
|
||
|
|
* equivalence of yylval and lexval since
|
||
|
|
* a multi-typed parser wants yylval to be
|
||
|
|
* typed to be the union of the types (YYSTYPE).
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* lex library header file -- accessed through
|
||
|
|
* #include <lex.h>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Description of scanning tables. The entries at the front of
|
||
|
|
* the struct must remain in place for the assembler routines to find.
|
||
|
|
*/
|
||
|
|
struct lextab {
|
||
|
|
int llendst; /* Last state number */
|
||
|
|
char *lldefault; /* Default state table */
|
||
|
|
char *llnext; /* Next state table */
|
||
|
|
char *llcheck; /* Check table */
|
||
|
|
int *llbase; /* Base table */
|
||
|
|
int llnxtmax; /* Last in next table */
|
||
|
|
int (*llmove)(); /* Move between states */
|
||
|
|
char *llfinal; /* Final state descriptions */
|
||
|
|
int (*llactr)(); /* Action routine */
|
||
|
|
int *lllook; /* Look ahead vector if != NULL */
|
||
|
|
char *llign; /* Ignore char vec if != NULL */
|
||
|
|
char *llbrk; /* Break char vec if != NULL */
|
||
|
|
char *llill; /* Illegal char vec if != NULL */
|
||
|
|
};
|
||
|
|
|
||
|
|
#define NBPW 16
|
||
|
|
#define LEXERR 256
|
||
|
|
#define LEXSKIP (-1)
|
||
|
|
#define EOF (-1)
|
||
|
|
//#define NULL (0)
|
||
|
|
#define LEXECHO(fp) {lexecho((fp));}
|
||
|
|
|
||
|
|
#define lextext llbuf
|
||
|
|
#define lexlast llend
|
||
|
|
|
||
|
|
extern FILE *lexin;
|
||
|
|
extern llstin();
|
||
|
|
|