Introduce a special attributes model

Through this model, astroid starts knowing special attributes of certain Python objects,
such as functions, classes, super objects and so on. This was previously possible before,
but now the lookup and the attributes themselves are separated into a new module,
objectmodel.py, which describes, in a more comprehensive way, the data model of each
object.

1 files changed, 5 insertions, 9 deletions

diff --git a/astroid/objects.py b/astroid/objects.py
index 1adc29ef..6597f3e8 100644
--- a/astroid/objects.py
+++ b/astroid/objects.py
@@ -23,6 +23,7 @@ from astroid import util
 
 
 BUILTINS = six.moves.builtins.__name__
+objectmodel = util.lazy_import('interpreter.objectmodel')
 
 
 class FrozenSet(node_classes._BaseContainer):
@@ -52,6 +53,8 @@ class Super(node_classes.NodeNG):
     *self_class* is the class where the super call is, while
     *scope* is the function where the super call is.
     """
+    special_attributes = util.lazy_descriptor(lambda: objectmodel.SuperModel())
+
     # pylint: disable=super-init-not-called
     def __init__(self, mro_pointer, mro_type, self_class, scope):
         self.type = mro_type
@@ -59,12 +62,6 @@ class Super(node_classes.NodeNG):
         self._class_based = False
         self._self_class = self_class
         self._scope = scope
-        self._model = {
-            '__thisclass__': self.mro_pointer,
-            '__self_class__': self._self_class,
-            '__self__': self.type,
-            '__class__': self._proxied,
-        }
 
     def _infer(self, context=None):
         yield self
@@ -120,9 +117,8 @@ class Super(node_classes.NodeNG):
     def igetattr(self, name, context=None):
         """Retrieve the inferred values of the given attribute name."""
 
-        local_name = self._model.get(name)
-        if local_name:
-            yield local_name
+        if name in self.special_attributes:
+            yield self.special_attributes.lookup(name)
             return
 
         try: