From 408f042470d48f03264aa94e042a3d2e023399d7 Mon Sep 17 00:00:00 2001
From: Katharine Hyatt <kslimes@gmail.com>
Date: Fri, 27 Feb 2026 13:48:58 +0100
Subject: [PATCH 1/2] Add JLArrays extension and tests

---
 Project.toml                   |  6 +++++-
 ext/StridedViewsJLArraysExt.jl | 27 +++++++++++++++++++++++++++
 test/runtests.jl               | 13 +++++++++++++
 3 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 ext/StridedViewsJLArraysExt.jl

diff --git a/Project.toml b/Project.toml
index 72f3c7e..7abe04d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -11,10 +11,12 @@ PackageExtensionCompat = "65ce6f38-6b18-4e1d-a461-8949797d7930"
 AMDGPU = "21141c5a-9bdb-4563-92ae-f87d6854732e"
 CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
 PtrArrays = "43287f4e-b6f4-7ad1-bb20-aadabca52c3d"
+JLArrays = "27aeb0d3-9eb9-45fb-866b-73c2ecf80fcb"
 
 [extensions]
 StridedViewsAMDGPUExt = "AMDGPU"
 StridedViewsCUDAExt = "CUDA"
+StridedViewsJLArraysExt = "JLArrays"
 StridedViewsPtrArraysExt = "PtrArrays"
 
 [compat]
@@ -22,6 +24,7 @@ AMDGPU = "2"
 Aqua = "0.8"
 CUDA = "4,5"
 JET = "0.9, 0.10, 0.11"
+JLArrays = "0.3.1"
 LinearAlgebra = "1.6"
 PackageExtensionCompat = "1"
 PtrArrays = "1.2.0"
@@ -34,9 +37,10 @@ AMDGPU = "21141c5a-9bdb-4563-92ae-f87d6854732e"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 CUDA = "052768ef-5323-5732-b1bb-66c8b64840ba"
 JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
+JLArrays = "27aeb0d3-9eb9-45fb-866b-73c2ecf80fcb"
 PtrArrays = "43287f4e-b6f4-7ad1-bb20-aadabca52c3d"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Test", "Random", "Aqua", "JET", "PtrArrays", "CUDA", "AMDGPU"]
+test = ["Test", "Random", "Aqua", "JET", "PtrArrays", "CUDA", "AMDGPU", "JLArrays"]
diff --git a/ext/StridedViewsJLArraysExt.jl b/ext/StridedViewsJLArraysExt.jl
new file mode 100644
index 0000000..02c863c
--- /dev/null
+++ b/ext/StridedViewsJLArraysExt.jl
@@ -0,0 +1,27 @@
+module StridedViewsJLArraysExt
+
+using StridedViews
+using JLArrays
+using JLArrays: Adapt
+
+const JLArrayStridedView{T, N, A <: JLArray{T}} = StridedView{T, N, A}
+
+function Adapt.adapt_structure(to, A::JLArrayStridedView)
+    return StridedView(
+        Adapt.adapt_structure(to, parent(A)),
+        A.size, A.strides, A.offset, A.op
+    )
+end
+
+function Base.pointer(x::JLArrayStridedView{T}) where {T}
+    return Base.unsafe_convert(Ptr{T}, pointer(x.parent, x.offset + 1))
+end
+function Base.unsafe_convert(::Type{Ptr{T}}, a::JLArrayStridedView{T}) where {T}
+    return convert(Ptr{T}, pointer(a))
+end
+
+function Base.print_array(io::IO, X::JLArrayStridedView)
+    return Base.print_array(io, Adapt.adapt_structure(Array, X))
+end
+
+end # module
diff --git a/test/runtests.jl b/test/runtests.jl
index 36cc38e..f53dffe 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -2,6 +2,7 @@ using Test
 using LinearAlgebra
 using Random
 using StridedViews
+using JLArrays
 
 Random.seed!(1234)
 
@@ -290,6 +291,18 @@ if !is_buildkite
         end
     end
 
+    @testset "JLArrays with StridedView" begin
+        @testset for T in (Float64, ComplexF64)
+            A = JLArray(randn(T, 10, 10, 10, 10))
+            @test isstrided(A)
+            B = StridedView(A)
+            @test B isa StridedView
+            JLArrays.@allowscalar begin
+                @test B == A
+            end
+        end
+    end
+
     using Aqua
     Aqua.test_all(StridedViews)
 

From 3be0115d92ddcddef35d38e44cfa1f94f957020a Mon Sep 17 00:00:00 2001
From: Katharine Hyatt <kslimes@gmail.com>
Date: Fri, 27 Feb 2026 16:02:32 +0100
Subject: [PATCH 2/2] Add a test

---
 test/runtests.jl | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/test/runtests.jl b/test/runtests.jl
index f53dffe..4b9a133 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -293,13 +293,16 @@ if !is_buildkite
 
     @testset "JLArrays with StridedView" begin
         @testset for T in (Float64, ComplexF64)
-            A = JLArray(randn(T, 10, 10, 10, 10))
+            Araw = randn(T, 10, 10, 10, 10)
+            A = JLArray(Araw)
             @test isstrided(A)
             B = StridedView(A)
             @test B isa StridedView
             JLArrays.@allowscalar begin
                 @test B == A
             end
+            Bvec = JLArrays.Adapt.adapt(Vector{T}, B)
+            @test Bvec == StridedView(Araw)
         end
     end