/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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) 1996, by Sun Microsystems, Inc.
 * All rights reserved.
 */

#include	<locale.h>
#include	<euc.h>
#include	<widec.h>
#define	xfree(a)	{ if (a!=NULL) { yfree(a); a=NULL; } }
#define	yfree free
#ifdef	DEBUG
#define	dprintf	if (dbg) printf
#else
#	define	dprintf(x1, x2, x3, x4)
#endif
#define	WC_VERY_SMALL ((wchar_t) 0x0001)
#define	WC_VERY_LARGE ((wchar_t) ~0x0000)
typedef double	awkfloat;

extern wchar_t	**FS;
extern wchar_t	**RS;
extern wchar_t	**ORS;
extern wchar_t	**OFS;
extern wchar_t	**OFMT;
extern awkfloat *NR;
extern awkfloat *NF;
extern wchar_t	**FILENAME;

extern wchar_t	record[];
extern wchar_t	L_NULL[];
extern int	dbg;
extern long long lineno;
extern int	errorflag;
extern int	donefld; /* 1 if record broken into fields */
extern int	donerec; /* 1 if record is valid (no fld has changed */

/* CELL:  all information about a variable or constant */

typedef struct val {
	char	ctype;		/* CELL, BOOL, JUMP, etc. */
	char	csub;		/* subtype of ctype */
	wchar_t *nval;   /* name, for variables only */
	wchar_t *sval;   /* string value */
	awkfloat fval;		/* value as number */
	unsigned tval;		/* type info */
	struct val *nextval;	/* ptr to next if chained */
} CELL;

extern CELL	*symtab[];
extern CELL	*setsymtab(), *lookup(), **makesymtab();

extern CELL	*recloc;	/* location of input record */
extern CELL	*nrloc;		/* NR */
extern CELL	*nfloc;		/* NF */
extern CELL	*maxmfld;	/* pointer to CELL for maximum field assigned to */

/* CELL.tval values: */
#define	STR	01	/* string value is valid */
#define	NUM	02	/* number value is valid */
#define	FLD	04	/* FLD means don't free string space */
#define	CON	010	/* this is a constant */
#define	ARR	020	/* this is an array */

awkfloat	setfval(), getfval();
wchar_t  *setsval(), *getsval();
wchar_t  *tostring(), *tokname();
char	*toeuccode();
double	log(), sqrt(), exp(), atof();

/* function types */
#define	FLENGTH	1
#define	FSQRT	2
#define	FEXP	3
#define	FLOG	4
#define	FINT	5

typedef struct nd {
	char	ntype;
	char	subtype;
	struct nd *nnext;
	int	nobj;
	struct nd *narg[];
} NODE;

extern NODE	*winner;

/* ctypes */
#define	OCELL	1
#define	OBOOL	2
#define	OJUMP	3

/* CELL subtypes */
#define	CCON	5
#define	CTEMP	4
#define	CNAME	3
#define	CVAR	2
#define	CFLD	1

/* bool subtypes */
#define	BTRUE	1
#define	BFALSE	2

/* jump subtypes */
#define	JEXIT	1
#define	JNEXT	2
#define	JBREAK	3
#define	JCONT	4

/* node types */
#define	NVALUE	1
#define	NSTAT	2
#define	NEXPR	3

extern CELL	*(*proctab[])();
extern int	pairstack[], paircnt;

#define	cantexec(n)	(n->ntype == NVALUE)
#define	notlegal(n)	(n <= FIRSTTOKEN || n >= LASTTOKEN || \
				proctab[n-FIRSTTOKEN]== nullproc)
#define	isexpr(n)	(n->ntype == NEXPR)
#define	isjump(n)	(n->ctype == OJUMP)
#define	isexit(n)	(n->ctype == OJUMP && n->csub == JEXIT)
#define	isbreak(n)	(n->ctype == OJUMP && n->csub == JBREAK)
#define	iscont(n)	(n->ctype == OJUMP && n->csub == JCONT)
#define	isnext(n)	(n->ctype == OJUMP && n->csub == JNEXT)
#define	isstr(n)	(n->tval & STR)
#define	isnum(n)	(n->tval & NUM)
#define	istrue(n)	(n->ctype == OBOOL && n->csub == BTRUE)
#define	istemp(n)	(n->ctype == OCELL && n->csub == CTEMP)
#define	isfld(n)	(!donefld && n->csub==CFLD && n->ctype==OCELL && \
				n->nval==0)
#define	isrec(n)	(donefld && n->csub==CFLD && n->ctype==OCELL && \
				n->nval!=0)
extern CELL	*nullproc();
extern CELL	*relop();

#define	MAXSYM	50
#define	HAT	0177	/* matches ^ in regular expr */
			/* watch out for mach dep */
/*
 * The code set number can be knew from actual character, but "b.c"
 * will use some pseudo codes.  And that psedo code will not confirm
 * to rule of real code set.
 */
typedef struct  ccl_chars {
	unsigned short  cc_ns;   /* Code set Number */
	wchar_t  cc_cs;   /* Actual character */
	unsigned short  cc_ne;
	wchar_t  cc_ce;
} ccl_chars_t;

ccl_chars_t	*cclenter();

extern void error(int, char *, ...);