Move variable checking to check_valid_variable_name function.

[whenjobs.git] / lib / whenexpr.mli

diff --git a/lib/whenexpr.mli b/lib/whenexpr.mli
index 12ba584..7d1c2de 100644 (file)
--- a/lib/whenexpr.mli
+++ b/lib/whenexpr.mli
@@ -161,3 +161,7 @@ val next_periodexpr : float -> periodexpr -> float
     midnight UTC on the 1st day of the year when
     [(y - 1970) mod i == 0].  This returns midnight on the
     1st day of the next year > t. *)
+
+val check_valid_variable_name : string -> unit
+(** Check that [name] is a valid variable name that users are permitted
+    to set, and raise [Failure] if it is not.  *)