xml: T6650: add initial op-mode cache support

1 files changed, 49 insertions, 0 deletions

diff --git a/python/vyos/xml_ref/op_definition.py b/python/vyos/xml_ref/op_definition.py
new file mode 100644
index 000000000..914f3a105
--- /dev/null
+++ b/python/vyos/xml_ref/op_definition.py
@@ -0,0 +1,49 @@
+# Copyright 2024 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library.  If not, see <http://www.gnu.org/licenses/>.
+
+from typing import TypedDict
+from typing import TypeAlias
+from typing import Optional
+from typing import Union
+
+
+class NodeData(TypedDict):
+    node_type: Optional[str]
+    help_text: Optional[str]
+    comp_help: Optional[dict[str, list]]
+    command: Optional[str]
+    path: Optional[list[str]]
+
+
+PathData: TypeAlias = dict[str, Union[NodeData|list['PathData']]]
+
+
+class OpXml:
+    def __init__(self):
+        self.op_ref = {}
+
+    def define(self, op_ref: list[PathData]) -> None:
+        self.op_ref = op_ref
+
+    def _get_op_ref_path(self, path: list[str]) -> list[PathData]:
+        def _get_path_list(path: list[str], l: list[PathData]) -> list[PathData]:
+            if not path:
+                return l
+            for d in l:
+                if path[0] in list(d):
+                    return _get_path_list(path[1:], d[path[0]])
+            return []
+        l = self.op_ref
+        return _get_path_list(path, l)