fix issue with anchors on sequences (reported by Bjorn Stabell)

https://bitbucket.org/ruamel/yaml/issue/7/anchor-names-not-preserved

3 files changed, 29 insertions, 1 deletions

diff --git a/py/__init__.py b/py/__init__.py
index 1c14001..0e8b561 100644
--- a/py/__init__.py
+++ b/py/__init__.py
@@ -21,7 +21,7 @@ def _convert_version(tup):
     return ret_val
 
 
-version_info = (0, 10, 1)
+version_info = (0, 10, 2)
 __version__ = _convert_version(version_info)
 
 del _convert_version
diff --git a/py/constructor.py b/py/constructor.py
index bfcd17d..1de8545 100644
--- a/py/constructor.py
+++ b/py/constructor.py
@@ -835,6 +835,10 @@ class RoundTripConstructor(SafeConstructor):
             seqtyp._yaml_add_comment(node.comment[:2])
             if len(node.comment) > 2:
                 seqtyp.yaml_end_comment_extend(node.comment[2], clear=True)
+        if node.anchor:
+            from ruamel.yaml.serializer import templated_id
+            if not templated_id(node.anchor):
+                seqtyp.yaml_set_anchor(node.anchor)
         for idx, child in enumerate(node.value):
             ret_val.append(self.construct_object(child, deep=deep))
             if child.comment:
@@ -949,6 +953,10 @@ class RoundTripConstructor(SafeConstructor):
             typ._yaml_add_comment(node.comment[:2])
             if len(node.comment) > 2:
                 typ.yaml_end_comment_extend(node.comment[2], clear=True)
+        if node.anchor:
+            from ruamel.yaml.serializer import templated_id
+            if not templated_id(node.anchor):
+                typ.yaml_set_anchor(node.anchor)
         for key_node, value_node in node.value:
             # keys can be list -> deep
             key = self.construct_object(key_node, deep=True)
diff --git a/test/test_anchor.py b/test/test_anchor.py
index 422b9d6..efbcb21 100644
--- a/test/test_anchor.py
+++ b/test/test_anchor.py
@@ -105,6 +105,26 @@ class TestAnchorsAliases:
               c: 2
             """)
 
+    def test_anchor_on_sequence(self):
+        # as reported by Bjorn Stabell
+        # https://bitbucket.org/ruamel/yaml/issue/7/anchor-names-not-preserved
+        from ruamel.yaml.comments import CommentedSeq
+        data = load("""
+        nut1: &alice
+         - 1
+         - 2
+        nut2: &blake
+         - some data
+         - *alice
+        nut3:
+         - *blake
+         - *alice
+        """)
+        l = data['nut1']
+        assert isinstance(l, CommentedSeq)
+        assert l.yaml_anchor() is not None
+        assert l.yaml_anchor().value == 'alice'
+
 
     merge_yaml = dedent("""
         - &CENTER {x: 1, y: 2}