Add structured exceptions to decorators and remaining functions.

* Use explicit StopIteration to pass information from generators to
  raise_if_nothing_inferred and path_wrapper, rather than return or
  implicit termination by reaching the end of the code block.

* Remove remove_nodes in favor of handling the cases in local_attr,
  istance_attr, and getattr, to avoid the need for complicated
  information passing when needing to raise an exception.

1 files changed, 0 insertions, 12 deletions

diff --git a/astroid/exceptions.py b/astroid/exceptions.py
index 9f49753b..ede21d96 100644
--- a/astroid/exceptions.py
+++ b/astroid/exceptions.py
@@ -69,18 +69,6 @@ class NoDefault(AstroidError):
         super(NoDefault, self).__init__(message, **kws)
 
 
-class DefaultStop(AstroidError):
-    '''This is a special error that's only meant to be raised in
-    generators wrapped with raise_if_nothing_inferred and
-    yes_if_nothing_inferred.  It does nothing other than carry a set
-    of attributes to be used in raising in InferenceError.
-
-    '''
-    
-    # def __init__(self, message='{func!r} has no default for {name!r}.', **kws):
-    #     super(NoDefault, self).__init__(message, **kws)
-
-
 class ResolveError(AstroidError):
     """Base class of astroid resolution/inference error.