From e195e163aca8a426766671bf21e5063fb4c65eda Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B8rgen=20S=2E=20Dokken?= <dokken@simula.no>
Date: Tue, 11 Jun 2024 15:24:06 +0200
Subject: [PATCH] Handle numpy metadata (quadrature arrays) without throwing a
 warning

---
 ufl/utils/sorting.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ufl/utils/sorting.py b/ufl/utils/sorting.py
index 896ca2099..3ac5f1884 100644
--- a/ufl/utils/sorting.py
+++ b/ufl/utils/sorting.py
@@ -8,6 +8,8 @@
 
 import warnings
 
+import numpy as np
+
 
 def topological_sorting(nodes, edges):
     """Return a topologically sorted list of the nodes.
@@ -84,6 +86,8 @@ def canonicalize_metadata(metadata):
             value = str(value)
         elif hasattr(value, "ufl_signature"):
             value = value.ufl_signature
+        elif isinstance(value, np.ndarray):
+            value = np.array2string(value, separator=" ")
         else:
             warnings.warn(
                 f"Applying str() to a metadata value of type {type(value).__name__}, "