intperperterbase: Add a convertor keyword argument

This is meant to allow simple type conversions to happen before the
interpreter function is called. This should simplify some cases like the
"native" keyword arugment that are booleans in the Meson DSL, but an
Enum in the implementation

1 files changed, 10 insertions, 0 deletions

diff --git a/run_unittests.py b/run_unittests.py
index 9f66d9c..21bb30e 100755
--- a/run_unittests.py
+++ b/run_unittests.py
@@ -1644,6 +1644,16 @@ class InternalTests(unittest.TestCase):
             _(None, mock.Mock(), tuple(), dict(input='bar'))
         self.assertEqual(str(cm.exception), "testfunc keyword argument \"input\" invalid!")
 
+    def test_typed_kwarg_convertor(self) -> None:
+        @typed_kwargs(
+            'testfunc',
+            KwargInfo('native', bool, convertor=lambda n: MachineChoice.BUILD if n else MachineChoice.HOST)
+        )
+        def _(obj, node, args: T.Tuple, kwargs: T.Dict[str, MachineChoice]) -> None:
+            assert isinstance(kwargs['native'], MachineChoice)
+
+        _(None, mock.Mock(), tuple(), dict(native=True))
+
 
 @unittest.skipIf(is_tarball(), 'Skipping because this is a tarball release')
 class DataTests(unittest.TestCase):