// A nested array/slice literal (`.[.[1, 2], .[3, 4]]`) at an expected slice-of-
// slices type (`[][]i64`) materializes each inner `[N]T` literal as a real `[]T`
// slice, so indexing the inner slice in the callee reads element contents
// correctly — for both the local-bound form and the direct-call-argument form.
// Regression (issue 0085): inner literals were appended as raw `[N]T` arrays
// under an element type of `[]T`, so the outer aggregate's elements were arrays
// where slice {ptr,len} headers were expected; indexing the inner slice read a
// garbage pointer and segfaulted. The per-element array->slice materialization
// recurses with the nesting, so every level coerces.
#import "modules/std.sx";

sum_nested :: (xss: [][]i64) -> i64 {
    total := 0;
    i := 0;
    while i < xss.len {
        j := 0;
        while j < xss[i].len { total += xss[i][j]; j += 1; }
        i += 1;
    }
    return total;
}

count_x :: (xss: [][]string) -> i64 {
    n := 0;
    i := 0;
    while i < xss.len {
        j := 0;
        while j < xss[i].len { if xss[i][j] == "x" { n += 1; } j += 1; }
        i += 1;
    }
    return n;
}

main :: () {
    // numeric [][]i64 — local-bound vs direct-arg both sum to 10.
    local : [][]i64 = .[.[1, 2], .[3, 4]];
    print("num local={}\n", sum_nested(local));
    print("num direct={}\n", sum_nested(.[.[1, 2], .[3, 4]]));

    // string [][]string — local-bound vs direct-arg both count 4 "x"s.
    slocal : [][]string = .[.["x", "a"], .["b", "x"], .["x", "x"]];
    print("str local={}\n", count_x(slocal));
    print("str direct={}\n", count_x(.[.["x", "a"], .["b", "x"], .["x", "x"]]));
}