* Add index.pxd

spacy/index.pxd

@@ -0,0 +1,37 @@
+from libcpp.vector cimport vector
+from libcpp.pair cimport pair
+from preshed.counter cimport count_t
+from preshed.maps cimport PreshMap
+from preshed.counter cimport PreshCounter
+from cymem.cymem cimport Pool
+
+from .lang cimport Lexicon
+from .tokens cimport Tokens, TokenC
+from .typedefs cimport id_t
+from .lexeme cimport attr_id_t
+from .typedefs cimport attr_t
+from .typedefs cimport hash_t
+
+from murmurhash.mrmr cimport hash64
+
+
+ctypedef vector[pair[id_t, count_t]] count_vector_t
+
+
+cdef class Index:
+    cdef attr_id_t attr_id
+    cdef readonly attr_t max_value
+    cdef vector[count_vector_t] counts
+    
+    cpdef int count(self, Tokens tokens) except -1
+
+
+cdef class DecisionMemory:
+    cdef int n_classes
+    cdef Pool mem
+    cdef PreshCounter _counts
+    cdef PreshCounter _class_counts
+    cdef list class_names
+    
+    cdef int inc(self, hash_t context_key, hash_t clas, count_t inc) except -1
+    cdef int find_best_class(self, count_t* counts, hash_t context_key) except -1