# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1512260180 -3600
# Node ID 7a493bc08fd2271019203df05a50f28cd8938130
# Parent  f2df7b2f977d9879c4b96a785ddddb2c4ba65e6d
Use a proper mapping to "parent" resolutions for introduced frequency selectors.

diff -r f2df7b2f977d -r 7a493bc08fd2 vRecurrence.py
--- a/vRecurrence.py	Sun Dec 03 00:23:51 2017 +0100
+++ b/vRecurrence.py	Sun Dec 03 01:16:20 2017 +0100
@@ -89,6 +89,20 @@
     "BYSECOND"
     )
 
+# Map levels to parent levels.
+
+enum_parent_levels = (
+    None,       # nothing beyond years
+    0,          # months -> years
+    1,          # weeks -> months
+    0,          # yeardays -> years
+    1,          # monthdays -> months
+    2,          # weekdays -> weeks
+    5,          # hours -> days
+    6,          # minutes -> hours
+    7           # seconds -> minutes
+    )
+
 # Levels defining days.
 
 daylevels = [2, 3, 4, 5]
@@ -552,7 +566,8 @@
     """
 
     if isinstance(from_sel, Enum) and level > 0:
-        repeat = Pattern(level - 1, {"interval" : 1}, freq_levels[level - 1])
+        parent_level = enum_parent_levels[level]
+        repeat = Pattern(parent_level, {"interval" : 1}, freq_levels[parent_level])
         l.append(repeat)
 
 def get_multiple(qualifier):