1 files changed, 33 insertions, 0 deletions
diff --git a/runtime/debug-utils.scm b/runtime/debug-utils.scm
new file mode 100644
index 0000000..e5fa971
--- /dev/null
+++ b/runtime/debug-utils.scm
@@ -0,0 +1,33 @@
+
+;;; This has some diagnostic stuff
+
+;;; This forces all delays in a structure
+
+(define (force-all x)
+  (cond ((delay? x)
+	 (force-all (force x)))
+	((pair? x)
+	 (force-all (car x))
+	 (force-all (cdr x)))
+	((vector? x)
+	 (dotimes (i (vector-length x))
+            (force-all (vector-ref x i)))))
+  x)
+
+;;; This forces & removes all delays in a structure.
+
+(define (remove-delays x)
+  (cond ((delay? x)
+	 (remove-delays (force x)))
+	((pair? x)
+	 (cons (remove-delays (car x))
+	       (remove-delays (cdr x))))
+	((vector? x)
+	 (list->vector (map (function remove-delays) (vector->list x))))
+	(else x)))
+
+(define (delay? x)
+  (and (pair? x)
+       (or (eq? (car x) '#t)
+	   (eq? (car x) '#f))))
+