Add cmap compatibility

.github/workflows/check_formatting.yml

@@ -54,4 +54,4 @@ jobs:
           ruff format --check .
 
       - name: Mypy check
-        run: python3 -m mypy -v
+        run: python3 -m mypy

src/io4dolfinx/checkpointing.py

@@ -19,6 +19,7 @@
 import ufl
 from packaging.version import Version
 
+from . import compat
 from .backends import FileMode, ReadMode, get_backend
 from .comm_helpers import (
     send_and_recv_cell_perm,
@@ -157,7 +158,8 @@ def write_meshtags(
     local_start = mesh.comm.exscan(num_saved_tag_entities, op=MPI.SUM)
     local_start = local_start if mesh.comm.rank != 0 else 0
     global_num_tag_entities = mesh.comm.allreduce(num_saved_tag_entities, op=MPI.SUM)
-    dof_layout = mesh.geometry.cmap.create_dof_layout()
+
+    dof_layout = compat.cmap(mesh).create_dof_layout()
     if hasattr(dof_layout, "num_entity_closure_dofs"):
         num_dofs_per_entity = dof_layout.num_entity_closure_dofs(dim)
     else:

src/io4dolfinx/compat.py

@@ -0,0 +1,9 @@
+import dolfinx.mesh
+
+
+def cmap(mesh) -> dolfinx.fem.element.CoordinateElement:
+    # Due to https://github.com/FEniCS/dolfinx/pull/4169
+    try:
+        return mesh.geometry.cmap()
+    except TypeError:
+        return mesh.geometry.cmap

src/io4dolfinx/original_checkpoint.py

@@ -14,6 +14,7 @@
 import dolfinx
 import numpy as np
 
+from . import compat
 from .backends import FileMode, get_backend
 from .comm_helpers import numpy_to_mpi
 from .structures import FunctionData, MeshData
@@ -178,7 +179,7 @@ def create_original_mesh_data(mesh: dolfinx.mesh.Mesh) -> MeshData:
     del _geometry, recv_nodes
 
     assert local_node_range[1] - local_node_range[0] == geometry.shape[0]
-    cmap = mesh.geometry.cmap
+    cmap = compat.cmap(mesh)
 
     cell_to_output_comm.Free()
     geometry_to_owner_comm.Free()

src/io4dolfinx/writers.py

@@ -13,6 +13,7 @@
 import numpy as np
 from packaging.version import Version
 
+from . import compat
 from .backends import FileMode, get_backend
 from .structures import FunctionData, MeshData
 
@@ -40,7 +41,8 @@ def prepare_meshdata_for_storage(mesh: dolfinx.mesh.Mesh, store_partition_info:
     num_cells_local = mesh.topology.index_map(mesh.topology.dim).size_local
     num_cells_global = mesh.topology.index_map(mesh.topology.dim).size_global
     cell_range = mesh.topology.index_map(mesh.topology.dim).local_range
-    cmap = mesh.geometry.cmap
+    cmap = compat.cmap(mesh)
+
     geom_layout = cmap.create_dof_layout()
     if hasattr(geom_layout, "num_entity_closure_dofs"):
         num_dofs_per_cell = geom_layout.num_entity_closure_dofs(mesh.topology.dim)
@@ -94,8 +96,8 @@ def prepare_meshdata_for_storage(mesh: dolfinx.mesh.Mesh, store_partition_info:
         local_topology_pos=cell_range,
         num_cells_global=num_cells_global,
         cell_type=mesh.topology.cell_name(),
-        degree=mesh.geometry.cmap.degree,
-        lagrange_variant=mesh.geometry.cmap.variant,
+        degree=cmap.degree,
+        lagrange_variant=cmap.variant,
         store_partition=store_partition_info,
         partition_processes=partition_processes,
         ownership_array=ownership_array,