Added functionality and removed a function that was repeated in source word,...

Added functionality and removed a function that was repeated in source word, but also inherited from word

umbra/words.py

@@ -106,7 +106,7 @@ class ShadowWord(Word):
         """Getter for Source attribute
 
         Return:
-            The source.
+            The source word.
         """
         return self._source
 
@@ -119,12 +119,18 @@ class ShadowWord(Word):
         """
         self._source = source
 
+    def has_source(self):
+        """Check whether this word has a source word that it is matched with
+
+        Returns:
+            source: True if this word is matched, False otherwise.
+        """
+        return self._source is not None
 
 class SourceWord(Word):
     def __init__(self, word, onset, offset):
         super().__init__(word, onset, offset)
         self._shadowed = False
-        self._source = None
 
     @property
     def shadowed(self):
@@ -144,32 +150,6 @@ class SourceWord(Word):
         """
         self._shadowed = value
 
-    @property
-    def source(self):
-        """Getter for the source attribute
-
-        Returns:
-             source: the word in the source file this word is aligned with
-        """
-        return self._source
-
-    @source.setter
-    def source(self, source):
-        """Set which word this one is aligned with
-
-        Args:
-            source: the source word that this word is set to be aligned with
-        """
-        self._source = source
-
-    def get_difference(self, other):
-        """Get the difference between the onset of this word and the other.
-
-        Args:
-            other: the other Word instance
-        """
-        return other.onset - self._onset
-
 
 class Sentence(list):
     def __init__(self, words):