Generalize sparse matmul

Project.toml

@@ -1,10 +1,11 @@
 name = "SparseArraysBase"
 uuid = "0d5efcca-f356-4864-8770-e1ed8d78f208"
 authors = ["ITensor developers <[email protected]> and contributors"]
-version = "0.5.10"
+version = "0.5.11"
 
 [deps]
 Accessors = "7d9f7c33-5ae7-4f3b-8dc6-eff91059b697"
+Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"
 DerivableInterfaces = "6c5e35bf-e59e-4898-b73c-732dcc4ba65f"
 Dictionaries = "85a47980-9c8c-11e8-2b9f-f7ca1fa99fb4"
@@ -15,6 +16,7 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 
 [compat]
 Accessors = "0.1.41"
+Adapt = "4.3.0"
 Aqua = "0.8.9"
 ArrayLayouts = "1.11.0"
 DerivableInterfaces = "0.5"

src/abstractsparsearray.jl

@@ -35,6 +35,26 @@ function Base._cat(dims, a::AnyAbstractSparseArray...)
   return concatenate(dims, a...)
 end
 
+function map_stored(f, a::AnyAbstractSparseArray)
+  kvs = storedpairs(a)
+  # `collect` to convert to `Vector`, since otherwise
+  # if it stays as `Dictionary` we might hit issues like
+  # https://github.com/andyferris/Dictionaries.jl/issues/163.
+  ks = collect(first.(kvs))
+  vs = collect(last.(kvs))
+  vs′ = map(f, vs)
+  a′ = zero!(similar(a, eltype(vs′)))
+  for (k, v′) in zip(ks, vs′)
+    a′[k] = v′
+  end
+  return a′
+end
+
+using Adapt: adapt
+function Base.print_array(io::IO, a::AnyAbstractSparseArray)
+  a′ = map_stored(adapt(Array), a)
+  return @invoke Base.print_array(io::typeof(io), a′::AbstractArray{<:Any,ndims(a)})
+end
 function Base.replace_in_print_matrix(
   a::AnyAbstractSparseVecOrMat, i::Integer, j::Integer, s::AbstractString
 )

src/abstractsparsearrayinterface.jl

@@ -256,7 +256,11 @@ function sparse_mul!(
     for I2 in eachstoredindex(a2)
       I_dest = mul_indices(I1, I2)
       if !isnothing(I_dest)
-        a_dest[I_dest] = mul!!(a_dest[I_dest], a1[I1], a2[I2], α, β′)
+        if isstored(a_dest, I_dest)
+          a_dest[I_dest] = mul!!(a_dest[I_dest], a1[I1], a2[I2], α, β′)
+        else
+          a_dest[I_dest] = a1[I1] * a2[I2] * α
+        end
       end
     end
   end

test/Project.toml

@@ -2,7 +2,6 @@
 Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 ArrayLayouts = "4c555306-a7a7-4459-81d9-ec55ddd5c99a"
-DerivableInterfaces = "6c5e35bf-e59e-4898-b73c-732dcc4ba65f"
 Dictionaries = "85a47980-9c8c-11e8-2b9f-f7ca1fa99fb4"
 JLArrays = "27aeb0d3-9eb9-45fb-866b-73c2ecf80fcb"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
@@ -17,7 +16,6 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 Adapt = "4.2.0"
 Aqua = "0.8.11"
 ArrayLayouts = "1.11.1"
-DerivableInterfaces = "0.5"
 Dictionaries = "0.4.4"
 JLArrays = "0.2.0"
 LinearAlgebra = "<0.0.1, 1"