df: base: OperationImplementation config op.name

* df: base: OperationImplementation add_label and add_orig_label methods
  now use op.name instead of ENTRY_POINT_ORIG_LABEL and
  ENTRY_POINT_NAME. Since they already have an op.name to go off of.

Fixes: #76

Signed-off-by: John Andersen <[email protected]>

Author: John Andersen

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Changed
+- OperationImplementation add_label and add_orig_label methods now use op.name
+  instead of ENTRY_POINT_ORIG_LABEL and ENTRY_POINT_NAME.
 
 ## [0.2.0] - 2019-05-23
 ### Added

dffml/df/base.py

@@ -76,6 +76,18 @@ def __call__(self,
             -> OperationImplementationContext:
         return self.CONTEXT(self, ctx, ictx)
 
+    @classmethod
+    def add_orig_label(cls, *above):
+        return (
+            list(above) + cls.op.name.split('_')
+        )
+
+    @classmethod
+    def add_label(cls, *above):
+        return (
+            list(above) + cls.op.name.split('_')
+        )
+
 def op(**kwargs):
     def wrap(func):
         if not 'name' in kwargs: