--- ray/src/cv/mgflib/parser.h	1995/05/09 11:47:27	1.21
+++ ray/src/cv/mgflib/parser.h	1995/11/08 09:40:26	1.26
@@ -8,7 +8,10 @@
 
 /* must include stdio.h before us */
 
-			/* Entities (order doesn't really matter) */
+#define MG_VMAJOR	1		/* major version number */
+#define MG_VMINOR	0		/* minor version number */
+
+			/* Entities (list is only appended, never modified) */
 #define MG_E_COMMENT	0		/* #		*/
 #define MG_E_COLOR	1		/* c		*/
 #define MG_E_CCT	2		/* cct		*/
@@ -37,9 +40,12 @@
 #define MG_E_TS		25		/* ts		*/
 #define MG_E_VERTEX	26		/* v		*/
 #define MG_E_XF		27		/* xf		*/
+			/* end of Version 1 entities */
 
 #define MG_NENTITIES	28		/* total # entities */
 
+#define MG_NELIST	{28}		/* entity count for version 1 and up */
+
 #define MG_NAMELIST	{"#","c","cct","cone","cmix","cspec","cxy","cyl","ed",\
 			"f","i","ies","ir","m","n","o","p","prism","rd",\
 			"ring","rs","sides","sph","td","torus","ts","v","xf"}
@@ -48,14 +54,19 @@
 
 extern char	mg_ename[MG_NENTITIES][MG_MAXELEN];
 
-			/* Handler routines for each entity */
-
+			/* Handler routines for each entity and unknown ones */
 #ifdef NOPROTO
 extern int	(*mg_ehand[MG_NENTITIES])();
+extern int	(*mg_uhand)();
+extern int	mg_defuhand();
 #else
 extern int	(*mg_ehand[MG_NENTITIES])(int argc, char **argv);
+extern int	(*mg_uhand)(int argc, char **argv);
+extern int	mg_defuhand(int, char **);
 #endif
 
+extern unsigned	mg_nunknown;		/* count of unknown entities */
+
 			/* Error codes */
 #define MG_OK		0		/* normal return value */
 #define MG_EUNK		1		/* unknown entity */
@@ -68,10 +79,11 @@ extern int	(*mg_ehand[MG_NENTITIES])(int argc, char **
 #define MG_EMEM		8		/* out of memory */
 #define MG_ESEEK	9		/* file seek error */
 #define MG_EBADMAT	10		/* bad material specification */
+#define MG_ELINE	11		/* input line too long */
 
-#define MG_NERRS	11
+#define MG_NERRS	12
 
-extern char	*mg_err[MG_NERRS];
+extern char	*mg_err[MG_NERRS];	/* list of error messages */
 
 /*
  * The general process for running the parser is to fill in the mg_ehand
@@ -150,10 +162,12 @@ extern int	mg_nqcdivs;		/* divisions per quarter circl
 extern int mg_entity();			/* get entity number from its name */
 extern int isint();			/* non-zero if integer format */
 extern int isflt();			/* non-zero if floating point format */
+extern int isname();			/* non-zero if legal identifier name */
 #else
 extern int mg_entity(char *);		/* get entity number from its name */
 extern int isint(char *);		/* non-zero if integer format */
 extern int isflt(char *);		/* non-zero if floating point format */
+extern int isname(char *);		/* non-zero if legal identifier name */
 #endif
 
 /************************************************************************
@@ -339,17 +353,21 @@ struct xf_array {
 
 typedef struct xf_spec {
 	long	xid;			/* unique transform id */
-	short	xav0;			/* zeroeth argument in xf_argv array */
-	short	xac;			/* transform argument count */
+	short	xac;			/* context argument count */
 	short	rev;			/* boolean true if vertices reversed */
 	XF	xf;			/* cumulative transformation */
 	struct xf_array	*xarr;		/* transformation array pointer */
 	struct xf_spec	*prev;		/* previous transformation context */
 } XF_SPEC;			/* followed by argument buffer */
 
-extern int	xf_argc;			/* total # transform args. */
-extern char	**xf_argv;			/* transform arguments */
-extern XF_SPEC	*xf_context;			/* current context */
+extern XF_SPEC	*xf_context;			/* current transform context */
+extern char	**xf_argend;			/* last transform argument */
+
+#define xf_ac(xf)	((xf)->xac)
+#define xf_av(xf)	(xf_argend - (xf)->xac)
+
+#define xf_argc		(xf_context==NULL ? 0 : xf_ac(xf_context))
+#define xf_argv		xf_av(xf_context)
 
 /*
  * The transformation handler should do most of the work that needs