Cleanup

generator/solo/harmonic.py

@@ -57,6 +57,7 @@ class Harmony:
     self._at = {}
     self._segments = {}
     self._members = {}
+    self._permitted = {}
     self.evaluations = {}
     self.color_eligibility = {}
   def at(self, time):
@@ -74,6 +75,11 @@ class Harmony:
       spans = [s for s in self.spans if s.start < end and s.end > start]
       self._members[key] = frozenset.intersection(*(s.roles.basic for s in spans)) if spans else frozenset()
     return self._members[key]
+  def permitted(self,start,end):
+    key=(start,end)
+    if key not in self._permitted:
+      self._permitted[key]=generator.solo.types.permitted(self.choices,start,end)
+    return self._permitted[key]
   def function(self, number, span):
     pitch = number % 12
     return 'basic' if pitch in span.roles.basic else 'specified_extension' if pitch in span.roles.specified else 'mapped_motion' if span.scale and pitch in span.scale.pitches else 'outside_collection'