ack/lang/cem/cemcom.ansi/LLlex.h
carl 750a6bc684 Better ANSI C compatibility and portability:
+ Addition of function prototypes and include files.
+ Change function definitions to ANSI C style.
+ Initial support for CMake
+ Scripts to generate compiler header is now sed based.
2019-02-19 00:54:23 +08:00

67 lines
1.8 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".
*/
/* $Id$ */
/* D E F I N I T I O N S F O R T H E L E X I C A L A N A L Y Z E R */
/* A token from the input stream is represented by an integer,
called a "symbol", but it may have other information associated
to it.
*/
#ifndef LLLEX_H_
#define LLLEX_H_
#include "file_info.h"
/* the structure of a token: */
struct token {
int tok_symb; /* the token itself */
char *tok_file; /* the file it (probably) comes from */
unsigned int tok_line; /* the line it (probably) comes from */
int tok_fund;
union {
struct idf *tok_idf; /* for IDENTIFIER & TYPE_IDENTIFIER */
struct { /* for STRING */
char *tok_bts; /* row of bytes */
int tok_len; /* length of row of bytes */
} tok_string;
arith tok_ival; /* for INTEGER */
char *tok_fval; /* for FLOATING */
} tok_data;
};
#define tk_symb tok_symb
#define tk_file tok_file
#define tk_line tok_line
#define tk_fund tok_fund
#define tk_idf tok_data.tok_idf
#define tk_bts tok_data.tok_string.tok_bts
#define tk_len tok_data.tok_string.tok_len
#define tk_ival tok_data.tok_ival
#define tk_fval tok_data.tok_fval
extern struct token dot, ahead, aside;
extern int token_nmb; /* number of the ahead token */
extern int tk_nmb_at_last_syn_err; /* token number at last syntax error */
extern int EoiForNewline; /* "LLlex.c" */
extern int AccFileSpecifier; /* "LLlex.c" */
extern int File_Inserted; /* "LLlex.c" */
extern int NoUnstack; /* buffer.c */
extern int err_occurred; /* "error.c" */
#define DOT dot.tk_symb
#define AHEAD ahead.tk_symb
#define ASIDE aside.tk_symb
#define EOF (-1)
int GetChar(void);
int LLlex(void);
int GetToken(register struct token* ptok);
#endif /* LLLEX_H_ */