/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*	Copyright (c) 1988 AT&T	*/
/*	  All Rights Reserved  	*/


/*
 * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
 */

/*
 * Copyright (c) 2011 Gary Mills
 */

#ifndef	_M4_H
#define	_M4_H

#include	<ctype.h>
#include	<stdio.h>
#include	<stdlib.h>
#include	<string.h>
#include	<errno.h>
#include	<locale.h>
#include	<limits.h>

#include	<wchar.h>
#include	<wctype.h>

#define	EOS	((wchar_t)0)
#define	MAXSYM	5
#define	PUSH	1
#define	NOPUSH	0
#define	OK	0
#define	NOT_OK	1

/* Used in m4.c and m4ext.c */
#define	DEF_HSHSIZE	199	/* default hash table size (prime). */
#define	DEF_BUFSIZE	4096	/* default pushback & arg text buffers size */
#define	DEF_STKSIZE	100	/* default call stack size */
#define	DEF_TOKSIZE	512	/* default token buffer size */

#define	BUILTIN		0x40000000
#define	INVALID_CHAR	0x80000000
#define	builtin(x)	((x) | BUILTIN)
#define	builtin_idx(x)	((x) & (wchar_t)~BUILTIN)
#define	is_builtin(x)	((x) != WEOF && ((x) & BUILTIN))

/*
 * Since we have expanded char to wchar_t, large vaule(has BUILTIN set)
 * can be given to the ctype macros. First check BUILTIN, and return
 * FALSE if it was set. EOF/WEOF will be in this case.
 */
#define	is_alpha(x)	(!is_builtin(x) && \
				(wide ? iswalpha(x) : isalpha(x)))
#define	is_alnum(x)	(!is_builtin(x) && \
				(wide ? iswalnum(x) : isalnum(x)))
#define	is_space(x)	(!is_builtin(x) && \
				(wide ? iswspace(x) : isspace(x)))
#define	is_digit(x)	(!is_builtin(x) && iswascii(x) && isdigit(x))


struct bs {
	void	(*bfunc)(wchar_t **, int);
	wchar_t	*bname;
};

struct	call {
	wchar_t	**argp;
	int	plev;
};

struct	nlist {
	wchar_t	*name;
	wchar_t	*def;
	char	tflag;
	struct	nlist *next;
};

struct Wrap {
	wchar_t *wrapstr;
	struct Wrap *nxt;
};

typedef struct {
	unsigned char buffer[MB_LEN_MAX + 1];
	char nbytes;
} ibuf_t;

extern FILE	*cf;
extern FILE	*ifile[];
extern FILE	*ofile[];
extern FILE	*xfopen(char *, char *);
extern wchar_t	**Ap;
extern wchar_t	**argstk;
extern wchar_t	*astklm;
extern void	*xmalloc(size_t);
extern char	*fname[];
extern wchar_t	*ibuf;
extern wchar_t	*ibuflm;
extern wchar_t	*ip;
extern wchar_t	*ipflr;
extern wchar_t	*ipstk[10];
extern wchar_t	*obuf;
extern wchar_t	*obuflm;
extern wchar_t	*op;
extern char	*procnam;
extern char	*tempfile;
extern wchar_t	*token;
extern wchar_t	*toklm;
extern wchar_t	C;
extern wchar_t	getchr();
extern wchar_t	lcom[];
extern wchar_t	lquote[];
extern wchar_t	nullstr[];
extern wchar_t	rcom[];
extern wchar_t	rquote[];
extern int	bufsize;
extern int	fline[];
extern int	hshsize;
extern unsigned int	hshval;
extern int	ifx;
extern int	nflag;
extern int	ofx;
extern int	sflag;
extern int	stksize;
extern int	sysrval;
extern int	toksize;
extern int	trace;
extern int	exitstat;
extern long	ctol(wchar_t *);
extern struct bs	barray[];
extern struct call	*Cp;
extern struct call	*callst;
extern struct nlist	**hshtab;
extern void	install();
extern struct nlist	*lookup();
extern struct Wrap	*wrapstart;
extern int	wide;
extern ibuf_t	ibuffer[];

extern void setfname(char *);
extern void pbstr(wchar_t *);
extern void pbnum(long);
extern void pbnbr(long, int, int);
extern void undiv(int, int);
extern void delexit(int, int);
extern void error(char *);
extern int min(int, int);
extern void putbak(wchar_t);
extern void stkchr(wchar_t);
extern void errorf(char *, char *);
extern void error2(char *, int);

extern wchar_t *wstrdup(wchar_t *);
extern int wstoi(wchar_t *);
extern char *wstr2str(wchar_t *, int);
extern wchar_t *str2wstr(char *, int);

extern void dodef(wchar_t **, int);
extern void doundef(wchar_t **, int);
extern int undef(wchar_t *);

/*
 * macros for performance reason.
 */
#define	putbak(c)	\
	if (ip < ibuflm)	\
		*ip++ = (c);	\
	else	\
		error2(gettext("pushed back more than %d chars"), bufsize)

#define	stkchr(c)	\
	if (op < obuflm)	\
		*op++ = (c);	\
	else	\
		error2(gettext("more than %d chars of argument text"), bufsize)

#endif	/* _M4_H */