typechecking: less hacky deal with dynamic attrs

diff --git a/gps303/gps303proto.py b/gps303/gps303proto.py
index da5796f988eeb281f4fa2e85c64e55e12c7e44f1..cee1bfaf512fb90321ab85083dc5e985fdb8657c 100755 (executable)
--- a/gps303/gps303proto.py
+++ b/gps303/gps303proto.py
@@ -18,7 +18,17 @@ from datetime import datetime, timezone
 from enum import Enum
 from inspect import isclass
 from struct import error, pack, unpack
 from enum import Enum
 from inspect import isclass
 from struct import error, pack, unpack

-from typing import Any, Callable, Dict, List, Optional, Tuple, Type, Union
+from typing import (
+    Any,
+    Callable,
+    Dict,
+    List,
+    Optional,
+    Tuple,
+    Type,
+    TYPE_CHECKING,
+    Union,
+)

 
 __all__ = (
     "class_by_prefix",
 
 __all__ = (
     "class_by_prefix",


@@ -120,37 +130,40 @@ class MetaPkt(type):
     respectively.
     """
 
     respectively.
     """
 

+    if TYPE_CHECKING:
+
+        def __getattr__(self, name: str) -> Any:
+            pass
+
+        def __setattr__(self, name: str, value: Any) -> None:
+            pass
+

     def __new__(
     def __new__(

-        cls, name: str, bases: Tuple[type, ...], attrs: Dict[str, Any]
+        cls: Type["MetaPkt"],
+        name: str,
+        bases: Tuple[type, ...],
+        attrs: Dict[str, Any],

     ) -> "MetaPkt":
         newcls = super().__new__(cls, name, bases, attrs)
     ) -> "MetaPkt":
         newcls = super().__new__(cls, name, bases, attrs)

-        setattr(
-            newcls,
-            "In",
-            super().__new__(
-                cls,
-                name + ".In",
-                (newcls,) + bases,
-                {
-                    "KWARGS": newcls.IN_KWARGS,
-                    "decode": newcls.in_decode,
-                    "encode": newcls.in_encode,
-                },
-            ),
+        newcls.In = super().__new__(
+            cls,
+            name + ".In",
+            (newcls,) + bases,
+            {
+                "KWARGS": newcls.IN_KWARGS,
+                "decode": newcls.in_decode,
+                "encode": newcls.in_encode,
+            },

         )
         )

-        setattr(
-            newcls,
-            "Out",
-            super().__new__(
-                cls,
-                name + ".Out",
-                (newcls,) + bases,
-                {
-                    "KWARGS": newcls.OUT_KWARGS,
-                    "decode": newcls.out_decode,
-                    "encode": newcls.out_encode,
-                },
-            ),
+        newcls.Out = super().__new__(
+            cls,
+            name + ".Out",
+            (newcls,) + bases,
+            {
+                "KWARGS": newcls.OUT_KWARGS,
+                "decode": newcls.out_decode,
+                "encode": newcls.out_encode,
+            },

         )
         return newcls
 
         )
         return newcls
 


@@ -170,6 +183,14 @@ class GPS303Pkt(metaclass=MetaPkt):
     In: Type["GPS303Pkt"]
     Out: Type["GPS303Pkt"]
 
     In: Type["GPS303Pkt"]
     Out: Type["GPS303Pkt"]
 

+    if TYPE_CHECKING:
+
+        def __getattr__(self, name: str) -> Any:
+            pass
+
+        def __setattr__(self, name: str, value: Any) -> None:
+            pass
+

     def __init__(self, *args: Any, **kwargs: Any):
         """
         Construct the object _either_ from (length, payload),
     def __init__(self, *args: Any, **kwargs: Any):
         """
         Construct the object _either_ from (length, payload),