Handle notification statement.

examples/test/testb@2016-04-26.yang

@@ -50,4 +50,11 @@ module testb {
       }
     }
   }
+
+  notification noA {
+    leaf leafO {
+      type boolean;
+      default "true";
+    }
+  }
 }

setup.py

@@ -10,7 +10,7 @@ def contents(*filenames):
 setup(
     name = "yangson",
     packages = ["yangson"],
-    version = "0.1.31",
+    version = "0.1.32",
     description = "Library for working with YANG schemas and data",
     author = "Ladislav Lhotka",
     author_email = "lhotka@nic.cz",

tests/test_model.py

@@ -45,6 +45,7 @@ def test_schema(data_model):
     llc = data_model.get_schema_node("/testb:rpcA/output/llistC")
     ll = lsta.get_schema_descendant(Context.path2route(
         "test:contD/acA/output/leafL"))
+    lo = data_model.get_schema_node("/testb:noA/leafO")
     assert la.parent == lb.parent == chb.parent == ca
     assert ll.parent.name == "output"
     assert (axa.mandatory == la.mandatory == cb.mandatory == cc.mandatory ==
@@ -61,6 +62,7 @@ def test_schema(data_model):
     assert ld.type.default == 111
     assert lla.default == [42, 54]
     assert lla.type.default == 11
+    assert lo.default == True
     assert la.type.parse_value("99") == 99
     with pytest.raises(YangTypeError):
         ld.type.parse_value("99")
@@ -73,3 +75,4 @@ def test_schema(data_model):
     assert lsta.get_schema_descendant(lsta.keys[1:]).name == "leafF"
     assert lsta.get_schema_descendant(lsta.unique[0][0]).name == "leafG"
     assert data_model.get_data_node("/test:contA/listA/contD/leafM") is None
+    assert data_model.get_data_node("/testb:noA/leafO") is None

yangson/schema.py

@@ -110,6 +110,7 @@ class SchemaNode:
         "mandatory": "_mandatory_stmt",
         "max-elements": "_max_elements_stmt",
         "min-elements": "_min_elements_stmt",
+        "notification": "_notification_stmt",
         "output": "_output_stmt",
         "ordered-by": "_ordered_by_stmt",
         "presence": "_presence_stmt",
@@ -281,6 +282,11 @@ class InternalNode(SchemaNode):
         if Context.if_features(stmt, mid):
             self._handle_child(RpcActionNode(), stmt, mid)
 
+    def _notification_stmt(self, stmt: Statement, mid: ModuleId) -> None:
+        """Handle notification statement."""
+        if Context.if_features(stmt, mid):
+            self._handle_child(NotificationNode(), stmt, mid)
+
     def _anydata_stmt(self, stmt: Statement, mid: ModuleId) -> None:
         """Handle anydata statement."""
         if Context.if_features(stmt, mid):
@@ -595,6 +601,19 @@ class OutputNode(InternalNode):
     def _tree_line_prefix(self) -> str:
         return super()._tree_line_prefix() + "ro"
 
+class NotificationNode(InternalNode):
+    """Notification node."""
+
+    def _tree_line_prefix(self) -> str:
+        return super()._tree_line_prefix() + "-n"
+
+    def state_roots(self) -> List[InstanceRoute]:
+        """Return a list of routes to descendant state data roots (or self)."""
+        return []
+
+    def _state_roots(self) -> List[SchemaNode]:
+        return []
+
 class LeafNode(TerminalNode, DataNode):
     """Leaf node."""