The version of basic copied from Martin Kerstens directory.

lang/basic/src.old/graph.h

@@ -0,0 +1,29 @@
+#
+/* 
+** The control graph is represented by a multi-list structure.
+** The em code is stored on the em intermediate file already
+** The offset and length is saved only.
+** Although this makes code generation mode involved, it allows
+** rather large BASIC programs to be processed.
+*/
+typedef struct LIST {
+	int	emlabel;		/* em label used with forwards */
+	int	linenr;			/* BASIC line number */
+	struct LIST *nextlist;
+} List;
+
+typedef struct LINERECORD{
+	int	emlabel;		/* target label */
+	int	linenr;			/* BASIC line number */
+	long	offset;			/* file offset in em file */
+	long	codelines;		/* number of em code lines */
+	List	*callers;		/* used from where ? */
+	List	*gotos;			/* fanout labels */
+	struct LINERECORD	*nextline, *prevline;
+	int	fixed;			/* fixation of block */
+} Linerecord;
+
+Linerecord	*firstline, 
+		*currline, 
+		*lastline;
+extern List	*forwardlabel;