Simplified invoke interface via macro

minvoke.jl

macro invoke(ex)
    Meta.isexpr(ex, :call) || error("invoke macro syntax error")
    isa(ex.args[1], Symbol) || error("invoke macro syntax error")
    fname = ex.args[1]
    types = [Meta.isexpr(a, :(::)) ? a.args[2] : Expr(:call, :typeof, a) for a in ex.args[2:end]]
    args = [Meta.isexpr(a, :(::)) ? a.args[1] : a for a in ex.args[2:end]]

    Expr(:call, :invoke, fname, Expr(:tuple, types...), args...)
end

usage_example.txt

julia> using Images

julia> b = randbool(5,5);

julia> i = Image(randbool(5,5));

julia> i .* b
Binary Image with:
  data: 5x5 BitArray{2}
  properties:
    limits: (false,true)


julia> @invoke i .* b
Binary Image with:
  data: 5x5 BitArray{2}
  properties:
    limits: (false,true)

julia> @invoke i::AbstractArray .* b
5x5 Array{Bool,2}:
 false   true  false  false  false
 false   true  false   true   true
 false   true  false   true  false
 false  false  false  false  false
 false   true  false   true  false