function arrowtype()

in src/eltypes.jl [551:569]

• 19 lines of code
• 5 McCabe index (conditional complexity)

function arrowtype(
    b,
    x::Union{DenseUnion{S,UnionT{T,typeIds,U}},SparseUnion{S,UnionT{T,typeIds,U}}},
) where {S,T,typeIds,U}
    if typeIds !== nothing
        Meta.unionStartTypeIdsVector(b, length(typeIds))
        for id in Iterators.reverse(typeIds)
            FlatBuffers.prepend!(b, id)
        end
        TI = FlatBuffers.endvector!(b, length(typeIds))
    end
    children = [fieldoffset(b, "", x.data[i]) for i = 1:fieldcount(U)]
    Meta.unionStart(b)
    Meta.unionAddMode(b, T)
    if typeIds !== nothing
        Meta.unionAddTypeIds(b, TI)
    end
    return Meta.Union, Meta.unionEnd(b), children
end