each

static VALUE
generator_each(int argc, VALUE *argv, VALUE obj)
{
    struct generator *ptr = generator_ptr(obj);
    VALUE args = rb_ary_new2(argc + 1);

    rb_ary_push(args, yielder_new());
    if (argc > 0) {
        rb_ary_cat(args, argv, argc);
    }

    return rb_proc_call(ptr->proc, args);
}