Merge branch 'small-fixes' into 'master'

Small fixes

See merge request pycodegen/pystencils!69

pystencils/data_types.py

@@ -236,6 +236,14 @@ class TypedSymbol(sp.Symbol):
     def __getnewargs__(self):
         return self.name, self.dtype
 
+    @property
+    def canonical(self):
+        return self
+
+    @property
+    def reversed(self):
+        return self
+
 
 def create_type(specification):
     """Creates a subclass of Type according to a string or an object of subclass Type.

pystencils/simp/assignment_collection.py

@@ -111,6 +111,7 @@ class AssignmentCollection:
             "Not in SSA form - same symbol assigned multiple times"
         return bound_symbols_set
 
+    @property
     def free_fields(self):
         """All fields accessed in the assignment collection, which do not occur as left hand sides in any assignment."""
         return {s.field for s in self.free_symbols if hasattr(s, 'field')}

pystencils_tests/test_vectorization.py

@@ -46,6 +46,7 @@ def test_inplace_update():
     kernel(f=arr)
     np.testing.assert_equal(arr, 2)
 
+
 def test_vectorization_fixed_size():
     configurations = []
     # Fixed size - multiple of four