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// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2025 by Petr Nohavica
// SPDX-License-Identifier: CC0-1.0
`define stop $stop
`define checkh(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d: got='h%x exp='h%x\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0);
`define checks(gotv,expv) do if ((gotv) != (expv)) begin $write("%%Error: %s:%0d: got='%s' exp='%s'\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0);
interface class IBottomMid;
pure virtual function void moo(int i);
endclass
interface class IBottom;
pure virtual function bit foo();
endclass
interface class IMid extends IBottomMid;
pure virtual function string bar();
endclass
class bottom_class implements IBottom;
string name;
function new(string name);
this.name = name;
endfunction
virtual function bit foo();
$display("%s", name);
endfunction
endclass
class middle_class extends bottom_class implements IMid, IBottom;
function new(string name);
super.new($sformatf("middle %0s", name));
endfunction
virtual function bit foo();
$display("%s", name);
return 0;
endfunction
virtual function void moo(int i);
$display("moo: %d", i);
endfunction
virtual function string bar();
return name;
endfunction
endclass
class top_class extends middle_class;
int i;
function new(string name, int i);
super.new($sformatf("%0s %0d", name, i));
this.i = i;
endfunction
endclass
class sky_class extends top_class;
function new(string name);
super.new(name, 42);
endfunction
endclass
module t;
initial begin
sky_class s = new("ahoj");
bottom_class b = s;
top_class t = s;
IMid im;
`checks( b.name, "middle ahoj 42" );
`checks( s.name, "middle ahoj 42" );
`checks( t.name, "middle ahoj 42" );
`checkh( t.i, 42);
`checks(s.bar(), "middle ahoj 42");
im = s;
im.moo(42);
$finish;
end
endmodule
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