ResumableFunctions @yield doesn't work even in the simplest IO example

General Usage Performance
1

This is the simplest IO example (copied from AI) and explicitly supported in the docs:

@resumable function read_lines(filename)
    io = open(filename)
    try
        for line in eachline(io)
            @yield line
        end
    finally
        close(io)
    end
end

Documentation (GitHub - JuliaDynamics/ResumableFunctions.jl: C# style generators a.k.a. semi-coroutines for Julia. · GitHub) says: " * In a try block only top level @yield statements are allowed."

Error I get: ERROR: LoadError: syntax: cannot goto label “_STATE_1” inside try/catch block

I guess this might be expected since we have a loop, but that makes ResumableFunctions practically useless for IO iterators.
Anybody has a better idea?

2

You can create a struct and implement the iteration interface. Interfaces · The Julia Language