* Set up an array POS_SENSES that denotes the set of valid senses for each POS tag. This way, we can do bitwise & between a lexeme's senses and the ones available for its POS tag, to get the allowable senses for the token.

spacy/senses.pxd

@@ -1,4 +1,6 @@
 # Enum of Wordnet supersenses
+cimport parts_of_speech
+from .typedefs cimport flags_t
 
 cpdef enum:
     A_behavior
@@ -54,3 +56,7 @@ cpdef enum:
     V_social
     V_stative
     V_weather
+
+
+cdef flags_t[<int>parts_of_speech.N_UNIV_TAGS] POS_SENSES
+

spacy/senses.pyx

@@ -1,4 +1,35 @@
 from __future__ import unicode_literals
+cimport parts_of_speech
+
+
+POS_SENSES[<int>parts_of_speech.NO_TAG] = 0
+POS_SENSES[<int>parts_of_speech.ADJ] = 0
+POS_SENSES[<int>parts_of_speech.ADV] = 0
+POS_SENSES[<int>parts_of_speech.ADP] = 0
+POS_SENSES[<int>parts_of_speech.CONJ] = 0
+POS_SENSES[<int>parts_of_speech.DET] = 0
+POS_SENSES[<int>parts_of_speech.NOUN] = 0
+POS_SENSES[<int>parts_of_speech.NUM] = 0
+POS_SENSES[<int>parts_of_speech.PRON] = 0
+POS_SENSES[<int>parts_of_speech.PRT] = 0
+POS_SENSES[<int>parts_of_speech.VERB] = 0
+POS_SENSES[<int>parts_of_speech.X] = 0
+POS_SENSES[<int>parts_of_speech.PUNCT] = 0
+POS_SENSES[<int>parts_of_speech.EOL] = 0
+
+
+cdef int _sense = 0
+
+for _sense in range(A_behavior, N_act):
+    POS_SENSES[<int>parts_of_speech.ADJ] |= 1 << _sense
+
+for _sense in range(N_act, V_body):
+    POS_SENSES[<int>parts_of_speech.NOUN] |= 1 << _sense
+
+for _sense in range(V_body, V_weather+1):
+    POS_SENSES[<int>parts_of_speech.VERB] |= 1 << _sense
+
+
 
 STRINGS = (
     'A_behavior',