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Adapt for BraidingTensor #374

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Adapt for BraidingTensor #374

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db26950
implement adapt for BraidingTensor
lkdvos Feb 13, 2026
4d2cd75
add tests
lkdvos Feb 13, 2026
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3 changes: 3 additions & 0 deletions ext/TensorKitAdaptExt.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -15,5 +15,8 @@ function Adapt.adapt_structure(to, x::DiagonalTensorMap)
data′ = adapt(to, x.data)
return DiagonalTensorMap(data′, x.domain)
end
function Adapt.adapt_structure(::Type{TorA}, x::BraidingTensor) where {TorA <: Union{Number, DenseArray{<:Number}}}
return BraidingTensor{scalartype(TorA)}(space(x), x.adjoint)
end

end
4 changes: 4 additions & 0 deletions test/tensors/planar.jl
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@@ -1,4 +1,5 @@
using Test, TestExtras
using Adapt
using TensorKit
using TensorKit: PlanarTrivial, ℙ
using TensorKit: planaradd!, planartrace!, planarcontract!
Expand All @@ -19,6 +20,9 @@ using .TestSetup
t2 = @constinferred BraidingTensor{ComplexF64}(W)
@test scalartype(t2) == ComplexF64
@test storagetype(t2) == Vector{ComplexF64}
t3 = @testinferred adapt(storagetype(t2), t1)
@test storagetype(t3) == storagetype(t2)
@test t3 == t2

W2 = reverse(codomain(W)) ← domain(W)
@test_throws SpaceMismatch BraidingTensor(W2)
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