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Implement try_strides #191

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Implement try_strides #191

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16 changes: 15 additions & 1 deletion src/FixedSizeArray.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -383,7 +383,9 @@ end

# unsafe: the native address of the array's storage

Base.cconvert(::Type{<:Ptr}, a::FixedSizeArray) = parent(a)
function Base.cconvert(::Type{Ptr{T}}, a::FixedSizeArray{T}) where {T}
Base.cconvert(Ptr{T}, parent(a))
end

function Base.unsafe_convert(::Type{Ptr{T}}, a::FixedSizeArray{T}) where {T}
Base.unsafe_convert(Ptr{T}, parent(a))
Expand All @@ -393,6 +395,18 @@ end

Base.elsize(::Type{A}) where {A<:FixedSizeArray} = Base.elsize(parent_type(A))

@static if isdefined(Base, :try_strides)
@inline size_to_strides(s, d, sz...) = (s, size_to_strides(s * d, sz...)...)
size_to_strides(s, d) = (s,)
size_to_strides(s) = ()
function Base.try_strides(a::FixedSizeArray)
s = @something try_strides(parent(a)) return nothing
size_to_strides(only(s), size(a)...)
end
Base.is_ptr_loadable(a::FixedSizeArray) = is_ptr_loadable(parent(a))
Base.is_ptr_storable(a::FixedSizeArray) = is_ptr_storable(parent(a))
end

# `reshape`: specializing it to ensure it returns a `FixedSizeArray`

function Base.reshape(a::FixedSizeArray, size::(NTuple{N,Int} where {N}))
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