Improve support for Tuples

Issues Return tuple of arrays #478 and StdVector of Tuple #469

Author: barche

src/CxxWrap.jl

@@ -591,6 +591,7 @@ map_julia_arg_type(t::Type{CxxPtr{CxxChar}}) = Union{PtrTypes{Cchar}, String}
 map_julia_arg_type(t::Type{<:Array{T}}) where {T <: CxxNumber} = Union{t, Array{julia_int_type(T)}}
 map_julia_arg_type(t::Type{<:Array{Ptr{T}}}) where {T <: CxxNumber} = Union{t, Array{Ptr{julia_int_type(T)}}}
 map_julia_arg_type(t::Type{ConstCxxPtr{CxxChar}}) = Union{ConstPtrTypes{Cchar}, String}
+map_julia_arg_type(::Type{T}) where {T<:Tuple} = Tuple{map_julia_arg_type.(T.parameters)...}
 
 # names excluded from julia type mapping
 const __excluded_names = Set([

src/StdLib/StdVector.jl

@@ -34,6 +34,7 @@ StdVector(v::Vector{Bool}) = StdVector{CxxBool}(v)
 Base.IndexStyle(::Type{<:StdVector}) = IndexLinear()
 Base.size(v::StdVector) = (Int(cppsize(v)),)
 Base.getindex(v::StdVector, i::Int) = cxxgetindex(v, i)[]
+Base.getindex(v::StdVector{<:Tuple}, i::Int) = cxxgetindex(v, i)
 Base.setindex!(v::StdVector{T}, val, i::Int) where {T} = cxxsetindex!(v, convert(T, val), i)
 
 @cxxdereference function Base.push!(v::StdVector, x)

test/containers.jl

@@ -60,4 +60,15 @@ let a1 = [UInt8(3)], a2 = [UInt8(5)]
   @test Containers.uint8_arrayref([pointer(a1), pointer(a2)]) == 8
 end
 
-end
+let tup = (1.0, Int32(2), true)
+  @test Containers.copy_tuple(tup) == tup
+end
+
+let artup = ([1.0,1.0,1.0], [3.0,3.0])
+  @test Containers.read_array_tuple(artup) == [1.0, 1.0, 1.0, 3.0, 3.0]
+  @test Containers.make_array_tuple() == ([1.0,2.0], [3.0])
+end
+
+@test Containers.make_tuple_vector() == [(1.0,2.0), (3.0,4.0)]
+
+end