verilator/test_regress/t/t_class_class.v

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain.
// SPDX-FileCopyrightText: 2020 Wilson Snyder
// SPDX-License-Identifier: CC0-1.0

// Note UVM internals do not require classes-in-classes
package P;
  class Cls #(
      type STORE_T = string
  );
    STORE_T imembera;
    STORE_T imemberb;
    class SubCls;
      STORE_T smembera;
      STORE_T smemberb;
      // TODO put extern function here or in t_class_extern.v to check link
    endclass : SubCls
    SubCls sc;
  endclass : Cls
endpackage : P

module t;
  P::Cls #(int) c;
  initial begin
    c = new;
    c.imembera = 10;
    c.imemberb = 20;
    c.sc = new;
    c.sc.smembera = 30;
    c.sc.smemberb = 40;
    if (c.imembera != 10) $stop;
    if (c.imemberb != 20) $stop;
    if (c.sc.smembera != 30) $stop;
    if (c.sc.smemberb != 40) $stop;

    $write("*-* All Finished *-*\n");
    $finish;
  end
endmodule