Add future option to OptionsProviderMixIn

pylint/checkers/base_checker.py

@@ -18,6 +18,7 @@
 # Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 # For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
 import functools
+import sys
 from inspect import cleandoc
 from typing import Any, Optional
 
@@ -30,6 +31,11 @@
 from pylint.message.message_definition import MessageDefinition
 from pylint.utils import get_rst_section, get_rst_title
 
+if sys.version_info >= (3, 8):
+    from typing import Literal
+else:
+    from typing_extensions import Literal
+
 
 @functools.total_ordering
 class BaseChecker(OptionsProviderMixIn):
@@ -47,14 +53,16 @@ class BaseChecker(OptionsProviderMixIn):
     # mark this checker as enabled or not.
     enabled: bool = True
 
-    def __init__(self, linter=None):
+    def __init__(
+        self, linter=None, *, future_option_parsing: Literal[None, True] = None
+    ):
         """checker instances should have the linter as argument
 
         :param ILinter linter: is an object implementing ILinter."""
         if self.name is not None:
             self.name = self.name.lower()
-        super().__init__()
         self.linter = linter
+        super().__init__(future=future_option_parsing)
 
     def __gt__(self, other):
         """Permit to sort a list of Checker by name."""

pylint/config/options_provider_mixin.py

@@ -3,10 +3,17 @@
 
 
 import optparse  # pylint: disable=deprecated-module
+import sys
 from typing import Any, Dict, Tuple
 
+from pylint.config import utils
 from pylint.config.option import _validate
 
+if sys.version_info >= (3, 8):
+    from typing import Literal
+else:
+    from typing_extensions import Literal
+
 
 class UnsupportedAction(Exception):
     """raised by set_option when it doesn't know what to do for an action"""
@@ -21,7 +28,11 @@ class OptionsProviderMixIn:
     options: Tuple[Tuple[str, Dict[str, Any]], ...] = ()
     level = 0
 
-    def __init__(self):
+    def __init__(self, *, future: Literal[None, True] = None):
+        if future:
+            for opt, optdict in self.options:
+                argument = utils._convert_option_to_argument(opt, optdict)
+                self.linter.namespace_test[opt] = argument  # type: ignore[attr-defined] # Always mixed in with a checker
         self.config = optparse.Values()
         self.load_defaults()
 

pylint/lint/pylinter.py

@@ -545,6 +545,9 @@ def __init__(
     ):
         """Some stuff has to be done before ancestors initialization...
         messages store / checkers / reporter / astroid manager"""
+        self.namespace_test: Dict[str, config._Argument] = {}
+        """Temporary dictionary for testing purposes"""
+
         # Attributes for reporters
         self.reporter: Union[reporters.BaseReporter, reporters.MultiReporter]
         if reporter:

tests/lint/unittest_lint.py

@@ -321,7 +321,7 @@ class FakeConfig:
     assert MSG_STATE_SCOPE_MODULE == linter._get_message_state_scope("W0101", 3)
     linter.enable("W0102", scope="module", line=3)
     assert MSG_STATE_SCOPE_MODULE == linter._get_message_state_scope("W0102", 3)
-    linter.config = FakeConfig()
+    linter.config = FakeConfig()  # type: ignore[assignment] # This should be optparse.Values()
     assert MSG_STATE_CONFIDENCE == linter._get_message_state_scope(
         "this-is-bad", confidence=interfaces.INFERENCE
     )