[unix-history] / usr / src / old / awk / awk.def

/*	awk.def	4.3	83/12/09	*/

#define hack	int
#define	AWKFLOAT	float
#define	xfree(a)	{ if(a!=NULL) { yfree(a); a=NULL;} }
#define	strfree(a)	{ if(a!=NULL && a!=EMPTY) { yfree(a);} a=EMPTY; }
#define yfree free
#define	isnull(x)	((x) == EMPTY || (x) == NULL)

#ifdef	DEBUG
#	define	dprintf	if(dbg)printf
#else
#	define	dprintf(x1, x2, x3, x4)
#endif
typedef	AWKFLOAT	awkfloat;

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

extern char	record[];
extern char	EMPTY[];
extern int	dbg;
extern int	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 */

typedef struct val {	/* general value during processing */
	char	*nval;	/* name, for variables only */
	char	*sval;	/* string value */
	awkfloat	fval;	/* value as number */
	unsigned	tval;	/* type info */
	struct val	*nextval;	/* ptr to next if chained */
} cell;
extern cell *symtab[];
cell	*setsymtab(), *lookup(), **makesymtab();

extern cell	*recloc;	/* location of input record */
extern cell	*nrloc;		/* NR */
extern cell	*nfloc;		/* NF */

#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();
char	*setsval(), *getsval();
char	*tostring(), *tokname(), *malloc();
double	log(), sqrt(), exp(), atof();

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

typedef struct {
	char otype;
	char osub;
	cell *optr;
} obj;

#define BOTCH	1
struct nd {
	char ntype;
	char subtype;
	struct nd *nnext;
	int nobj;
	struct nd *narg[BOTCH];	/* C won't take a zero length array */
};
typedef struct nd node;
extern node	*winner;
extern node	*nullstat;

/* otypes */
#define OCELL	0
#define OEXPR	1
#define OBOOL	2
#define OJUMP	3

/* cell subtypes */
#define CTEMP	4
#define CNAME	3 
#define CVAR	2
#define CFLD	1
#define CCON	0

/* 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
#define NPA2	4

extern obj	(*proctab[])();
extern obj	true, false;
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.otype == OJUMP)
#define isexit(n)	(n.otype == OJUMP && n.osub == JEXIT)
#define	isbreak(n)	(n.otype == OJUMP && n.osub == JBREAK)
#define	iscont(n)	(n.otype == OJUMP && n.osub == JCONT)
#define	isnext(n)	(n.otype == OJUMP && n.osub == JNEXT)
#define isstr(n)	(n.optr->tval & STR)
#define istrue(n)	(n.otype == OBOOL && n.osub == BTRUE)
#define istemp(n)	(n.otype == OCELL && n.osub == CTEMP)
#define isfld(n)	(!donefld && n.osub==CFLD && n.otype==OCELL && n.optr->nval==EMPTY)
#define isrec(n)	(donefld && n.osub==CFLD && n.otype==OCELL && n.optr->nval!=EMPTY)
obj	nullproc();
obj	relop();

#define MAXSYM	50
#define	HAT	0177	/* matches ^ in regular expr */
			/* watch out for mach dep */
Commit	Line	Data
e58105eb	1	/* awk.def 4.3 83/12/09 */
7949e46e KM	2
	3	#define hack int
	4	#define AWKFLOAT float
	5	#define xfree(a) { if(a!=NULL) { yfree(a); a=NULL;} }
c48090b0	6	#define strfree(a) { if(a!=NULL && a!=EMPTY) { yfree(a);} a=EMPTY; }
7949e46e	7	#define yfree free
e58105eb RC	8	#define isnull(x) ((x) == EMPTY \|\| (x) == NULL)
e58105eb RC	9
7949e46e KM	10	#ifdef DEBUG
	11	# define dprintf if(dbg)printf
	12	#else
	13	# define dprintf(x1, x2, x3, x4)
	14	#endif
	15	typedef AWKFLOAT awkfloat;
	16
	17	extern char **FS;
	18	extern char **RS;
	19	extern char **ORS;
	20	extern char **OFS;
	21	extern char **OFMT;
	22	extern awkfloat *NR;
	23	extern awkfloat *NF;
	24	extern char **FILENAME;
	25
	26	extern char record[];
c48090b0	27	extern char EMPTY[];
7949e46e KM	28	extern int dbg;
	29	extern int lineno;
	30	extern int errorflag;
	31	extern int donefld; /* 1 if record broken into fields */
	32	extern int donerec; /* 1 if record is valid (no fld has changed */
	33
	34	typedef struct val { /* general value during processing */
	35	char nval; / name, for variables only */
	36	char sval; / string value */
	37	awkfloat fval; /* value as number */
	38	unsigned tval; /* type info */
	39	struct val nextval; / ptr to next if chained */
	40	} cell;
	41	extern cell *symtab[];
	42	cell setsymtab(), lookup(), **makesymtab();
	43
	44	extern cell recloc; / location of input record */
	45	extern cell nrloc; / NR */
	46	extern cell nfloc; / NF */
	47
	48	#define STR 01 /* string value is valid */
	49	#define NUM 02 /* number value is valid */
	50	#define FLD 04 /* FLD means don't free string space */
	51	#define CON 010 /* this is a constant */
	52	#define ARR 020 /* this is an array */
	53
	54	awkfloat setfval(), getfval();
	55	char setsval(), getsval();
	56	char tostring(), tokname(), *malloc();
	57	double log(), sqrt(), exp(), atof();
	58
	59	/* function types */
	60	#define FLENGTH 1
	61	#define FSQRT 2
	62	#define FEXP 3
	63	#define FLOG 4
	64	#define FINT 5
	65
	66	typedef struct {
	67	char otype;
	68	char osub;
	69	cell *optr;
	70	} obj;
	71
	72	#define BOTCH 1
	73	struct nd {
	74	char ntype;
	75	char subtype;
	76	struct nd *nnext;
	77	int nobj;
	78	struct nd narg[BOTCH]; / C won't take a zero length array */
	79	};
	80	typedef struct nd node;
	81	extern node *winner;
	82	extern node *nullstat;
	83
	84	/* otypes */
	85	#define OCELL 0
	86	#define OEXPR 1
	87	#define OBOOL 2
	88	#define OJUMP 3
	89
	90	/* cell subtypes */
	91	#define CTEMP 4
92	#define CNAME 3
93	#define CVAR 2
94	#define CFLD 1
95	#define CCON 0
96
97	/* bool subtypes */
98	#define BTRUE 1
99	#define BFALSE 2
100
101	/* jump subtypes */
102	#define JEXIT 1
103	#define JNEXT 2
104	#define JBREAK 3
105	#define JCONT 4
106
107	/* node types */
108	#define NVALUE 1
109	#define NSTAT 2
110	#define NEXPR 3
111	#define NPA2 4
112
113	extern obj (*proctab[])();
114	extern obj true, false;
115	extern int pairstack[], paircnt;
116
117	#define cantexec(n) (n->ntype == NVALUE)
118	#define notlegal(n) (n <= FIRSTTOKEN \|\| n >= LASTTOKEN \|\| proctab[n-FIRSTTOKEN]== nullproc)
119	#define isexpr(n) (n->ntype == NEXPR)
120	#define isjump(n) (n.otype == OJUMP)
121	#define isexit(n) (n.otype == OJUMP && n.osub == JEXIT)
122	#define isbreak(n) (n.otype == OJUMP && n.osub == JBREAK)
123	#define iscont(n) (n.otype == OJUMP && n.osub == JCONT)
124	#define isnext(n) (n.otype == OJUMP && n.osub == JNEXT)
125	#define isstr(n) (n.optr->tval & STR)
126	#define istrue(n) (n.otype == OBOOL && n.osub == BTRUE)
127	#define istemp(n) (n.otype == OCELL && n.osub == CTEMP)
c48090b0 SL	128	#define isfld(n) (!donefld && n.osub==CFLD && n.otype==OCELL && n.optr->nval==EMPTY)
c48090b0 SL	129	#define isrec(n) (donefld && n.osub==CFLD && n.otype==OCELL && n.optr->nval!=EMPTY)
7949e46e KM	130	obj nullproc();
	131	obj relop();
	132
	133	#define MAXSYM 50
	134	#define HAT 0177 /* matches ^ in regular expr */
	135	/* watch out for mach dep */