090 rings basic

// Test: $std/rings - MPMC ring buffer with identity branches
// This test imports the actual $std/rings library

~import "$std/rings"
~import "$std/io"

const std = @import("std");

// Use the ring type from $std/rings (internal Zig naming convention)
const Ring = koru_std.rings.MpmcRing(u64, 16);
var ring = Ring.init();

// Test enqueue/dequeue with identity branches
~std.rings:enqueue(ring: &ring, value: 42)
| ok |> std.rings:enqueue(ring: &ring, value: 100)
    | ok |> std.rings:dequeue(ring: &ring)
        | some v |> std.io:print.ln("First: {{ v:d }}")
        | none |> std.io:print.ln("ERROR: empty")
    | full |> std.io:print.ln("ERROR: full")
| full |> std.io:print.ln("ERROR: full")