--- ray/src/common/calcomp.h	1989/04/10 22:05:56	1.2
+++ ray/src/common/calcomp.h	2005/05/25 04:44:25	2.20
@@ -1,40 +1,45 @@
-/* Copyright (c) 1986 Regents of the University of California */
-
-/* SCCSid "$SunId$ LBL" */
-
+/* RCSid $Id: calcomp.h,v 2.20 2005/05/25 04:44:25 greg Exp $ */
 /*
  *  calcomp.h - header file for expression parser.
- *
  */
-				/* EPNODE types */
-#define  VAR		1
-#define  NUM		2
-#define  UMINUS		3
-#define  CHAN		4
-#define  FUNC		5
-#define  ARG		6
-#define  TICK		7
-#define  SYM		8
-				/* also: '+', '-', '*', '/', '^', '=' */
+#ifndef _RAD_CALCOMP_H_
+#define _RAD_CALCOMP_H_
 
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define	 VAR		1
+#define	 NUM		2
+#define	 UMINUS		3
+#define	 CHAN		4
+#define	 FUNC		5
+#define	 ARG		6
+#define	 TICK		7
+#define	 SYM		8
+				/* also: '+', '-', '*', '/', '^', '=', ':' */
+
 typedef struct {
     char  *fname;		/* function name */
-    int  nargs;			/* # of required arguments */
-    double  (*f)();		/* pointer to function */
+    short  nargs;		/* # of required arguments */
+    short  atyp;		/* assignment type (':' or '=') */
+    double  (*f)(char *);	/* pointer to function */
 }  LIBR;		/* a library function */
 
 typedef struct epnode {
-    int  type;			/* node type */
+    int	 type;			/* node type */
     struct epnode  *sibling;	/* next child this level */
     union {
 	struct epnode  *kid;	/* first child */
-	double  num;		/* number */
+	double	num;		/* number */
 	char  *name;		/* symbol name */
 	int  chan;		/* channel number */
-	long  tick;		/* timestamp */
+	unsigned long  tick;	/* timestamp */
 	struct vardef {
 	    char  *name;		/* variable name */
-	    int  nlinks;		/* number of references */
+	    int	 nlinks;		/* number of references */
 	    struct epnode  *def;	/* definition */
 	    LIBR  *lib;			/* library definition */
 	    struct vardef  *next;	/* next in hash list */
@@ -44,22 +49,106 @@ typedef struct epnode {
 
 typedef struct vardef  VARDEF;	/* a variable definition */
 
-extern double  eval(), varvalue(), chanvalue(), funvalue();
-extern double  argument(), getnum();
-extern double  (*eoper[])();
-extern int  getinum();
-extern char  *getname(), *argfun();
-extern EPNODE  *eparse(), *ekid(), *dlookup(), *dpop(), *dfirst(), *dnext();
-extern EPNODE  *getdefn(), *getchan();
-extern EPNODE  *getE1(), *getE2(), *getE3(), *getE4(), *getE5(), *rconst();
-extern VARDEF  *varinsert(), *varlookup(), *argf();
-extern LIBR  *liblookup();
-extern long  eclock;
+#define	 RMAXWORD	127		/* maximum word/id length */
+#define	 CNTXMARK	'`'		/* context mark */
+
+#define	 isid(c)	(isalnum(c) || (c) == '_' || \
+			(c) == '.' || (c) == CNTXMARK)
+
+#define	 evalue(ep)	(*eoper[(ep)->type])(ep)
+
+					/* flags to set in esupport */
+#define  E_VARIABLE	001
+#define  E_FUNCTION	002
+#define  E_INCHAN	004
+#define  E_OUTCHAN	010
+#define  E_RCONST	020
+#define  E_REDEFW	040
+
+extern double  (*eoper[])(EPNODE *);
+extern unsigned long  eclock;
+extern unsigned int  esupport;
+extern EPNODE	*curfunc;
 extern int  nextc;
-extern int  errno;
+extern int  eofc;
 
-#define  evalue(ep)	(*eoper[(ep)->type])(ep)
+					/* defined in biggerlib.c */
+extern void biggerlib(void);
 
-#ifdef  CPM
-#define  defined(D)	D
+					/* defined in caldefn.c */
+extern void	fcompile(char *fname);
+extern void	scompile(char *str, char *fname, int ln);
+extern double	varvalue(char *vname);
+extern double	evariable(EPNODE *ep);
+extern void	varset(char *vname, int assign, double val);
+extern void	dclear(char *name);
+extern void	dremove(char *name);
+extern int	vardefined(char *name);
+extern char	*setcontext(char *ctx);
+extern char	*pushcontext(char *ctx);
+extern char	*popcontext(void);
+extern char	*qualname(char *nam, int lvl);
+extern int	incontext(char *qn);
+extern void	chanout(void (*cs)(int n, double v));
+extern void	dcleanup(int lvl);
+extern EPNODE	*dlookup(char *name);
+extern VARDEF	*varlookup(char *name);
+extern VARDEF	*varinsert(char *name);
+extern void	varfree(VARDEF *ln);
+extern EPNODE	*dfirst(void);
+extern EPNODE	*dnext(void);
+extern EPNODE	*dpop(char *name);
+extern void	dpush(char *nm, EPNODE *ep);
+extern void	addchan(EPNODE *sp);
+extern void	getstatement(void);
+extern EPNODE	*getdefn(void);
+extern EPNODE	*getchan(void);
+					/* defined in calexpr.c */
+extern EPNODE	*eparse(char *expr);
+extern double	eval(char *expr);
+extern int	epcmp(EPNODE *ep1, EPNODE *ep2);
+extern void	epfree(EPNODE *epar);
+extern EPNODE	*ekid(EPNODE *ep, int n);
+extern int	nekids(EPNODE *ep);
+extern void	initfile(FILE *fp, char *fn, int ln);
+extern void	initstr(char *s, char *fn, int ln);
+extern void	getscanpos(char **fnp, int *lnp, char **spp, FILE **fpp);
+extern int	scan(void);
+extern char	*long2ascii(long l);
+extern void	syntax(char *err);
+extern void	addekid(EPNODE *ep, EPNODE *ekid);
+extern char	*getname(void);
+extern int	getinum(void);
+extern double	getnum(void);
+extern EPNODE	*getE1(void);
+extern EPNODE	*getE2(void);
+extern EPNODE	*getE3(void);
+extern EPNODE	*getE4(void);
+extern EPNODE	*getE5(void);
+extern EPNODE	*rconst(EPNODE *epar);
+extern int	isconstvar(EPNODE *ep);
+extern int	isconstfun(EPNODE *ep);
+					/* defined in calfunc.c */
+extern int	fundefined(char *fname);
+extern double	funvalue(char *fname, int n, double *a);
+extern void	funset(char *fname, int nargs, int assign,
+				double (*fptr)(char *));
+extern int	nargum(void);
+extern double	argument(int n);
+extern VARDEF	*argf(int n);
+extern char	*argfun(int n);
+extern double	efunc(EPNODE *ep);
+extern LIBR	*liblookup(char *fname);
+extern void	libupdate(char *fn);
+					/* defined in calprnt.c */
+extern void	eprint(EPNODE *ep, FILE *fp);
+extern void	dprint(char *name, FILE *fp);
+					/* defined by client */
+extern double	chanvalue(int n);
+
+
+#ifdef __cplusplus
+}
 #endif
+#endif /* _RAD_CALCOMP_H_ */
+