/*
 * 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 */