# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1512327050 -3600
# Node ID 9b6843537c2fbd0d56f838171a90973e2167512c
# Parent  d39a2232c73745df4def2baeb675d0288f868565
Make WeekDayFilter an Enum subclass, ensuring that such selectors can be wrapped
with Pattern selectors where no frequency qualifier is given.

diff -r d39a2232c737 -r 9b6843537c2f vRecurrence.py
--- a/vRecurrence.py	Sun Dec 03 19:19:14 2017 +0100
+++ b/vRecurrence.py	Sun Dec 03 19:50:50 2017 +0100
@@ -955,7 +955,22 @@
         self.args["interval"] = interval
         self.update_step()
 
-class WeekDayFilter(Selector):
+class Enum(Selector):
+
+    "A generic value selector."
+
+    def __init__(self, level, args, qualifier, selecting=None, first=False):
+        Selector.__init__(self, level, args, qualifier, selecting, first)
+        self.step = scale(1, level)
+
+    def materialise_items(self, context, start, end, inclusive=False):
+        return EnumIterator(self, context, start, end, inclusive, self.step,
+                            self.get_values())
+
+    def get_values(self, limit=None):
+        return sort_values(self.args["values"], limit)
+
+class WeekDayFilter(Enum):
 
     "A selector of instances specified in terms of day numbers."
 
@@ -1007,21 +1022,6 @@
             values.append(value)
         return values
 
-class Enum(Selector):
-
-    "A generic value selector."
-
-    def __init__(self, level, args, qualifier, selecting=None, first=False):
-        Selector.__init__(self, level, args, qualifier, selecting, first)
-        self.step = scale(1, level)
-
-    def materialise_items(self, context, start, end, inclusive=False):
-        return EnumIterator(self, context, start, end, inclusive, self.step,
-                            self.get_values())
-
-    def get_values(self, limit=None):
-        return sort_values(self.args["values"], limit)
-
 class MonthDayFilter(Enum):
 
     "A selector of month days."