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/* This file is part of the software similarity tester SIM.
Written by Dick Grune, Vrije Universiteit, Amsterdam.
$Id: token.h,v 2.4 2001/11/13 12:55:59 dick Exp $
*/
/*
Token interface.
Since the definition of a token has been a continual source of
problems, it is now defined as an Abstract Data Type.
To allow stronger type checking, there is a special version for use
by lint.
*/
#include <stdio.h>
#ifndef TOKEN
#ifdef lint
#define TESTTOKEN
#endif
#ifdef TESTTOKEN /* strict version */
struct cccc {
int cccc;
};
typedef struct cccc *lintTOKEN;
#define TOKEN lintTOKEN
#define TOKEN2int(c) ((int)(c))
#define int2TOKEN(i) ((TOKEN)(i))
extern int TOKEN_EQ(TOKEN t1, TOKEN t2);
#else /* production version */
#define TOKEN unsigned char
#define TOKEN2int(c) ((c)&0377)
#define int2TOKEN(i) ((TOKEN)(i))
#define TOKEN_EQ(t1,t2) (TOKEN2int(t1) == TOKEN2int(t2))
#endif /* TESTTOKEN */
#endif /* TOKEN */
/* Macros for the composition of tokens */
#define NORM(ch) int2TOKEN((ch)&0377)
#define CTRL(ch) int2TOKEN((ch)&0037)
#define META(ch) int2TOKEN((ch)|0200)
#define MTCT(ch) int2TOKEN(((ch)&0037)|0200)
#define NOTOKEN int2TOKEN(0)
extern void print_token(FILE *ofile, TOKEN tk); /* in two characters */
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