Warn if non-permitted keyword arguments are given to compiler methods

This can help future generations avoid mistakes like this:
https://github.com/xkbcommon/libxkbcommon/commit/edb1c662394578a54b7bbed231d918925e5d8150

To avoid breaking builds, this is currently just an error. After
sufficient time has passed this can hopefully become a hard error,
similarly to the already-existing `permittedKwargs` warnings.

1 files changed, 16 insertions, 0 deletions

diff --git a/mesonbuild/interpreterbase.py b/mesonbuild/interpreterbase.py
index 0539b14..c56e30b 100644
--- a/mesonbuild/interpreterbase.py
+++ b/mesonbuild/interpreterbase.py
@@ -80,6 +80,22 @@ class permittedKwargs:
         return wrapped
 
 
+class permittedMethodKwargs:
+
+    def __init__(self, permitted):
+        self.permitted = permitted
+
+    def __call__(self, f):
+        @wraps(f)
+        def wrapped(obj, args, kwargs):
+            for k in kwargs:
+                if k not in self.permitted:
+                    mlog.warning('''Passed invalid keyword argument "{}".'''.format(k))
+                    mlog.warning('This will become a hard error in the future.')
+            return f(obj, args, kwargs)
+        return wrapped
+
+
 class InterpreterException(mesonlib.MesonException):
     pass