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

/*	awk.def	4.1	82/05/07	*/

#define hack	int
#define	AWKFLOAT	float
#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
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 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==0)
#define isrec(n)	(donefld && n.osub==CFLD && n.otype==OCELL && n.optr->nval!=0)
obj	nullproc();
obj	relop();

#define MAXSYM	50
#define	HAT	0177	/* matches ^ in regular expr */
			/* watch out for mach dep */
Commit	Line	Data
7949e46e KM	1	/* awk.def 4.1 82/05/07 */
	2
	3	#define hack int
	4	#define AWKFLOAT float
	5	#define xfree(a) { if(a!=NULL) { yfree(a); a=NULL;} }
	6	#define yfree free
	7	#ifdef DEBUG
	8	# define dprintf if(dbg)printf
	9	#else
	10	# define dprintf(x1, x2, x3, x4)
	11	#endif
	12	typedef AWKFLOAT awkfloat;
	13
	14	extern char **FS;
	15	extern char **RS;
	16	extern char **ORS;
	17	extern char **OFS;
	18	extern char **OFMT;
	19	extern awkfloat *NR;
	20	extern awkfloat *NF;
	21	extern char **FILENAME;
	22
	23	extern char record[];
	24	extern int dbg;
	25	extern int lineno;
	26	extern int errorflag;
	27	extern int donefld; /* 1 if record broken into fields */
	28	extern int donerec; /* 1 if record is valid (no fld has changed */
	29
	30	typedef struct val { /* general value during processing */
	31	char nval; / name, for variables only */
	32	char sval; / string value */
	33	awkfloat fval; /* value as number */
	34	unsigned tval; /* type info */
	35	struct val nextval; / ptr to next if chained */
	36	} cell;
	37	extern cell *symtab[];
	38	cell setsymtab(), lookup(), **makesymtab();
	39
	40	extern cell recloc; / location of input record */
	41	extern cell nrloc; / NR */
	42	extern cell nfloc; / NF */
	43
	44	#define STR 01 /* string value is valid */
	45	#define NUM 02 /* number value is valid */
	46	#define FLD 04 /* FLD means don't free string space */
	47	#define CON 010 /* this is a constant */
	48	#define ARR 020 /* this is an array */
	49
	50	awkfloat setfval(), getfval();
	51	char setsval(), getsval();
	52	char tostring(), tokname(), *malloc();
	53	double log(), sqrt(), exp(), atof();
	54
	55	/* function types */
	56	#define FLENGTH 1
	57	#define FSQRT 2
	58	#define FEXP 3
	59	#define FLOG 4
	60	#define FINT 5
	61
	62	typedef struct {
	63	char otype;
	64	char osub;
65	cell *optr;
66	} obj;
67
68	#define BOTCH 1
69	struct nd {
70	char ntype;
71	char subtype;
72	struct nd *nnext;
73	int nobj;
74	struct nd narg[BOTCH]; / C won't take a zero length array */
75	};
76	typedef struct nd node;
77	extern node *winner;
78	extern node *nullstat;
79
80	/* otypes */
81	#define OCELL 0
82	#define OEXPR 1
83	#define OBOOL 2
84	#define OJUMP 3
85
86	/* cell subtypes */
87	#define CTEMP 4
88	#define CNAME 3
89	#define CVAR 2
90	#define CFLD 1
91	#define CCON 0
92
93	/* bool subtypes */
94	#define BTRUE 1
95	#define BFALSE 2
96
97	/* jump subtypes */
98	#define JEXIT 1
99	#define JNEXT 2
100	#define JBREAK 3
101	#define JCONT 4
102
103	/* node types */
104	#define NVALUE 1
105	#define NSTAT 2
106	#define NEXPR 3
107	#define NPA2 4
108
109	extern obj (*proctab[])();
110	extern obj true, false;
111	extern int pairstack[], paircnt;
112
113	#define cantexec(n) (n->ntype == NVALUE)
114	#define notlegal(n) (n <= FIRSTTOKEN \|\| n >= LASTTOKEN \|\| proctab[n-FIRSTTOKEN]== nullproc)
115	#define isexpr(n) (n->ntype == NEXPR)
116	#define isjump(n) (n.otype == OJUMP)
117	#define isexit(n) (n.otype == OJUMP && n.osub == JEXIT)
118	#define isbreak(n) (n.otype == OJUMP && n.osub == JBREAK)
119	#define iscont(n) (n.otype == OJUMP && n.osub == JCONT)
120	#define isnext(n) (n.otype == OJUMP && n.osub == JNEXT)
121	#define isstr(n) (n.optr->tval & STR)
122	#define istrue(n) (n.otype == OBOOL && n.osub == BTRUE)
123	#define istemp(n) (n.otype == OCELL && n.osub == CTEMP)
124	#define isfld(n) (!donefld && n.osub==CFLD && n.otype==OCELL && n.optr->nval==0)
125	#define isrec(n) (donefld && n.osub==CFLD && n.otype==OCELL && n.optr->nval!=0)
126	obj nullproc();
127	obj relop();
128
129	#define MAXSYM 50
130	#define HAT 0177 /* matches ^ in regular expr */
131	/* watch out for mach dep */