slots-ify internal classes

Saves memory without downsides. Ref #60
AutomatedTester · Aug 17, 2016 · ab9cbc8 · ab9cbc8
1 parent 8ad7602
commit ab9cbc8
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/src/attr/_make.py b/src/attr/_make.py
@@ -591,7 +591,7 @@ def __init__(self, default, validator, repr, cmp, hash, init, convert):
 _CountingAttr = _add_cmp(_add_repr(_CountingAttr))
 
 
-@attributes
+@attributes(slots=True)
 class Factory(object):
     """
     Stores a factory callable.

diff --git a/src/attr/validators.py b/src/attr/validators.py
@@ -7,7 +7,7 @@
 from ._make import attr, attributes
 
 
-@attributes(repr=False)
+@attributes(repr=False, slots=True)
 class _InstanceOfValidator(object):
     type = attr()
 
@@ -47,7 +47,7 @@ def instance_of(type):
     return _InstanceOfValidator(type)
 
 
-@attributes(repr=False)
+@attributes(repr=False, slots=True)
 class _ProvidesValidator(object):
     interface = attr()
 
@@ -87,7 +87,7 @@ def provides(interface):
     return _ProvidesValidator(interface)
 
 
-@attributes(repr=False)
+@attributes(repr=False, slots=True)
 class _OptionalValidator(object):
     validator = attr()