End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

Module.nesting

Module.nesting → array

static VALUE
rb_mod_nesting(VALUE _)
{
    VALUE ary = rb_ary_new();
    const rb_cref_t *cref = rb_vm_cref();

    while (cref && CREF_NEXT(cref)) {
        VALUE klass = CREF_CLASS(cref);
        if (!CREF_PUSHED_BY_EVAL(cref) &&
            !NIL_P(klass)) {
            rb_ary_push(ary, klass);
        }
        cref = CREF_NEXT(cref);
    }
    return ary;
}

Returns the list of Modules nested at the point of call.

Example

module M1
  module M2
    $a = Module.nesting
  end
end
$a           #=> [M1::M2, M1]
$a[0].name   #=> "M1::M2"

See also .constants .new .used_modules also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0

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