pw_rpc: Prefix Nanopb struct names with "::"

This prevents prevents Nanopb names from incorrectly resolving to names
in namespaces.

Change-Id: I7e44354df24e872095e8b9029312efd6a6f66555
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/68096
Commit-Queue: Wyatt Hepler <hepler@google.com>
Pigweed-Auto-Submit: Wyatt Hepler <hepler@google.com>
Reviewed-by: Alexei Frolov <frolv@google.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/pw_protobuf/py/pw_protobuf/proto_tree.py b/pw_protobuf/py/pw_protobuf/proto_tree.py
index c33c33d71..9f8885527 100644
--- a/pw_protobuf/py/pw_protobuf/proto_tree.py
+++ b/pw_protobuf/py/pw_protobuf/proto_tree.py
@@ -75,8 +75,15 @@ class ProtoNode(abc.ABC):
         path = '.'.join(self._attr_hierarchy(lambda node: node.name(), None))
         return path.lstrip('.')
 
-    def nanopb_name(self) -> str:
-        """Full nanopb-style name of the node."""
+    def nanopb_fields(self) -> str:
+        """Name of the Nanopb variable that represents the proto fields."""
+        return self._nanopb_name() + '_fields'
+
+    def nanopb_struct(self) -> str:
+        """Name of the Nanopb struct for this proto."""
+        return '::' + self._nanopb_name()
+
+    def _nanopb_name(self) -> str:
         name = '_'.join(self._attr_hierarchy(lambda node: node.name(), None))
         return name.lstrip('_')