* Implement validation and oracle on pystate, for testing

spacy/ner/pystate.pxd

@@ -11,6 +11,7 @@ cdef class PyState:
     cdef readonly dict moves_by_name
     
     cdef Move* _moves
+    cdef Move* _golds
     cdef State* _s
 
     cdef Move* _get_move(self, unicode move_name) except NULL

spacy/ner/pystate.pyx

@@ -4,7 +4,7 @@ from ._state cimport init_state
 from ._state cimport entity_is_open
 from .moves cimport fill_moves
 from .moves cimport transition
-from .moves cimport set_accept_if_valid
+from .moves cimport set_accept_if_valid, set_accept_if_oracle
 from .moves import get_n_moves
 from .moves import ACTION_NAMES
 
@@ -27,10 +27,18 @@ cdef class PyState:
             else:
                 tag_name = tag_names[m.label]
                 self.moves_by_name['%s-%s' % (action_name, tag_name)] = i
+        # TODO
+        self._golds = <Move*>self.mem.alloc(n_tokens, sizeof(Move))
 
     cdef Move* _get_move(self, unicode move_name) except NULL:
         return &self._moves[self.moves_by_name[move_name]]
 
+    def set_golds(self, list gold_names):
+        cdef Move* m
+        for i, name in enumerate(gold_names):
+            m = self._get_move(name)
+            self._golds[i] = m[0]
+
     def transition(self, unicode move_name):
         cdef Move* m = self._get_move(move_name)
         transition(self._s, m)
@@ -41,15 +49,17 @@ cdef class PyState:
         return m.accept
 
     def is_gold(self, unicode move_name):
-        pass
+        set_accept_if_oracle(self._moves, self._golds, self.n_classes, self._s)
+        cdef Move* m = self._get_move(move_name)
+        return m.accept
 
     property ent:
         def __get__(self):
-            return self._s.ents[self._s.j]
+            return self._s.curr
 
     property n_ents:
         def __get__(self):
-            return self._s.j + 1
+            return self._s.j
 
     property i:
         def __get__(self):
@@ -58,5 +68,3 @@ cdef class PyState:
     property open_entity:
         def __get__(self):
             return entity_is_open(self._s)
-
-