From 95db0760f2aa075dee657061b11c631b1cebc848 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20van=20Noord?=
 <13665637+DanielNoord@users.noreply.github.com>
Date: Wed, 22 Dec 2021 09:57:39 +0100
Subject: [PATCH] Add ``utils`` to config

---
 pylint/config/utils.py | 53 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 pylint/config/utils.py

diff --git a/pylint/config/utils.py b/pylint/config/utils.py
new file mode 100644
index 00000000000..f013c84352a
--- /dev/null
+++ b/pylint/config/utils.py
@@ -0,0 +1,53 @@
+# 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
+
+"""Utils for arguments/options parsing and handling."""
+
+from typing import Any, Dict
+
+from pylint.config.argument import _Argument
+
+ArgumentsDict = Dict[str, _Argument]
+
+IMPLEMENTED_OPTDICT_KEYS = {"default", "type", "choices", "help", "metavar"}
+"""This is used to track our progress on accepting all optdict keys"""
+
+
+def _convert_option_to_argument(opt: str, optdict: Dict[str, Any]) -> _Argument:
+    """Convert an optdict to an Argument class instance"""
+    # See if the optdict contains any keys we don't yet implement
+    for key, value in optdict.items():
+        if key not in IMPLEMENTED_OPTDICT_KEYS:
+            print("Unhandled key found in Argument creation:", key)
+            print("It's value is:", value)
+    return _Argument(
+        name=opt,
+        default=optdict["default"],
+        arg_type=optdict["type"],
+        choices=optdict.get("choices", []),
+        arg_help=optdict["help"],
+        metavar=optdict["metavar"],
+    )
+
+
+def _validate_argument(argument: _Argument) -> None:
+    """Method to check if all instance attributes have the correct typed."""
+    # Check default value
+    assert argument.default
+    assert argument.default == argument.type(argument.default)
+
+    # Check type value
+    assert argument.type
+    assert callable(argument.type)
+
+    # Check choices value
+    assert isinstance(argument.choices, list)
+    assert all(isinstance(i, str) for i in argument.choices)
+
+    # Check help value
+    assert argument.help
+    assert isinstance(argument.help, str)
+
+    # Check metavar value
+    assert argument.metavar
+    assert isinstance(argument.metavar, str)