Merge pull request #201 from Forced-Alignment-and-Vowel-Extraction/co…

…ncat-methods

patch for piecemeal appending

src/aligned_textgrid/mixins/tiermixins.py

@@ -232,7 +232,12 @@ def append(self:TierGroupType, new:TierType):
                 f"Only a tier of {self._seq_type.__name__} "
                 f"can be appended to a {self.__class__.__name__}"
             ))
-
+
+        if self.within:
+            self.within._reclone_classes([new.entry_class])
+            new_class, = self.within._swap_classes([new.entry_class], self.within._cloned_classes)
+            new.__init__(new, entry_class=new_class)
+
         possible_set = {SequenceBaseClass}
         existing_set = set()
         if len(self) > 0:

tests/test_add_append.py

@@ -468,6 +468,28 @@ def test_clone_reuse(self):
 
         assert tgr1.entry_classes[0] is tgr2.entry_classes[0]
 
+    def test_piecemeal_append(self):
+        MyWord, MyPhone = custom_classes(["MyWord", "MyPhone"])
+
+        word_tier = SequenceTier([
+            MyWord((0, 10, "a")),
+            MyWord((10,15,"b"))
+        ])
+
+        phone_tier = SequenceTier([
+            MyPhone((0, 10, "AA")),
+            MyPhone((10, 15,"BB"))
+        ])
+
+        tier_group = TierGroup([word_tier])
+
+        atg = AlignedTextGrid([tier_group])
+
+        atg[0].append(phone_tier)
+
+        assert phone_tier in tier_group
+        assert tier_group in atg
+
 class TestCleanups:
     def test_sequence_cleanup(self):
         MyWord, MyPhone = custom_classes(["MyWord", "MyPhone"])