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verilator/test_regress/t/t_enumeration.v
Wilson Snyder 2966f03042 Tests: Enumerations supported
2021-12-31 15:10:29 -05:00

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Systemverilog
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// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed into the Public Domain, for any use,
// without warranty, 2012 by Iztok Jeras.
// SPDX-License-Identifier: CC0-1.0
module t (/*AUTOARG*/
// Inputs
clk
);
input clk;
integer cnt = 0;
integer mod = 0;
// event counter
always @ (posedge clk)
if (cnt==20) begin
cnt <= 0;
mod <= mod + 1;
end else begin
cnt <= cnt + 1;
end
// finish report
always @ (posedge clk)
if (mod==3) begin
$write("*-* All Finished *-*\n");
$finish;
end
// anonymous type variable declaration
enum logic [2:0] {red=1, orange, yellow, green, blue, indigo, violet} rainbow7;
// named type
typedef enum logic {OFF, ON} t_switch;
t_switch switch;
// numbering examples
enum integer {father, mother, son[2], daughter, gerbil, dog[3]=10, cat[3:5]=20, car[3:1]=30} family;
// test of raibow7 type
always @ (posedge clk)
if (mod==0) begin
// write value to array
if (cnt== 0) begin
rainbow7 <= rainbow7.first();
// check number
if (rainbow7.num() !== 7 ) begin $display("%d", rainbow7.num() ); $stop(); end
// if (rainbow7 !== 3'bxxx ) begin $display("%b", rainbow7 ); $stop(); end
end
else if (cnt== 1) begin
if (rainbow7 !== 3'd1 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== red ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.next();
end
else if (cnt== 2) begin
if (rainbow7 !== 3'd2 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== orange ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.next();
end
else if (cnt== 3) begin
if (rainbow7 !== 3'd3 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== yellow ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.next();
end
else if (cnt== 4) begin
if (rainbow7 !== 3'd4 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== green ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.next();
end
else if (cnt== 5) begin
if (rainbow7 !== 3'd5 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== blue ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.next();
end
else if (cnt== 6) begin
if (rainbow7 !== 3'd6 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== indigo ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.next();
end
else if (cnt== 7) begin
if (rainbow7 !== 3'd7 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== violet ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.next();
end
else if (cnt== 8) begin
if (rainbow7 !== 3'd1 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== red ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.next();
end
end else if (mod==1) begin
// write value to array
if (cnt== 0) begin
rainbow7 <= rainbow7.last();
// check number
if (rainbow7.num() !== 7 ) begin $display("%d", rainbow7.num() ); $stop(); end
end
else if (cnt== 1) begin
if (rainbow7 !== 3'd7 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== violet ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.prev();
end
else if (cnt== 2) begin
if (rainbow7 !== 3'd6 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== indigo ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.prev();
end
else if (cnt== 3) begin
if (rainbow7 !== 3'd5 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== blue ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.prev();
end
else if (cnt== 4) begin
if (rainbow7 !== 3'd4 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== green ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.prev();
end
else if (cnt== 5) begin
if (rainbow7 !== 3'd3 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== yellow ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.prev();
end
else if (cnt== 6) begin
if (rainbow7 !== 3'd2 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== orange ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.prev();
end
else if (cnt== 7) begin
if (rainbow7 !== 3'd1 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== red ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.prev();
end
else if (cnt== 8) begin
if (rainbow7 !== 3'd7 ) begin $display("%b", rainbow7 ); $stop(); end
if (rainbow7 !== violet ) begin $display("%b", rainbow7 ); $stop(); end
rainbow7 <= rainbow7.prev();
end
end
// test of t_switch type
always @ (posedge clk)
if (mod==0) begin
// write value to array
if (cnt== 0) begin
switch <= switch.first();
// check number
if (switch.num() !== 2 ) begin $display("%d", switch.num() ); $stop(); end
// if (switch !== 1'bx) begin $display("%b", switch ); $stop(); end
end
else if (cnt== 1) begin
if (switch !== 1'b0) begin $display("%b", switch ); $stop(); end
if (switch !== OFF ) begin $display("%b", switch ); $stop(); end
switch <= switch.next();
end
else if (cnt== 2) begin
if (switch !== 1'b1) begin $display("%b", switch ); $stop(); end
if (switch !== ON ) begin $display("%b", switch ); $stop(); end
switch <= switch.next();
end
else if (cnt== 3) begin
if (switch !== 1'b0) begin $display("%b", switch ); $stop(); end
if (switch !== OFF ) begin $display("%b", switch ); $stop(); end
switch <= switch.next();
end
end else if (mod==1) begin
// write value to array
if (cnt== 0) begin
rainbow7 <= rainbow7.last();
// check number
if (switch.num() !== 2 ) begin $display("%d", switch.num() ); $stop(); end
end
else if (cnt== 1) begin
if (switch !== 1'b1) begin $display("%b", switch ); $stop(); end
if (switch !== ON ) begin $display("%b", switch ); $stop(); end
switch <= switch.prev();
end
else if (cnt== 2) begin
if (switch !== 1'b0) begin $display("%b", switch ); $stop(); end
if (switch !== OFF ) begin $display("%b", switch ); $stop(); end
switch <= switch.prev();
end
else if (cnt== 3) begin
if (switch !== 1'b1) begin $display("%b", switch ); $stop(); end
if (switch !== ON ) begin $display("%b", switch ); $stop(); end
switch <= switch.prev();
end
end
// test of raibow7 type
always @ (posedge clk)
if (mod==0) begin
// write value to array
if (cnt== 0) begin
family <= family.first();
// check number
if (family.num() !== 15 ) begin $display("%d", family.num() ); $stop(); end
// if (family !== 32'dx ) begin $display("%b", family ); $stop(); end
end
else if (cnt== 1) begin
if (family !== 0 ) begin $display("%b", family ); $stop(); end
if (family !== father ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 2) begin
if (family !== 1 ) begin $display("%b", family ); $stop(); end
if (family !== mother ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 3) begin
if (family !== 2 ) begin $display("%b", family ); $stop(); end
if (family !== son0 ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 4) begin
if (family !== 3 ) begin $display("%b", family ); $stop(); end
if (family !== son1 ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 5) begin
if (family !== 4 ) begin $display("%b", family ); $stop(); end
if (family !== daughter ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 6) begin
if (family !== 5 ) begin $display("%b", family ); $stop(); end
if (family !== gerbil ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 7) begin
if (family !== 10 ) begin $display("%b", family ); $stop(); end
if (family !== dog0 ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 8) begin
if (family !== 11 ) begin $display("%b", family ); $stop(); end
if (family !== dog1 ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 9) begin
if (family !== 12 ) begin $display("%b", family ); $stop(); end
if (family !== dog2 ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 10) begin
if (family !== 20 ) begin $display("%b", family ); $stop(); end
if (family !== cat3 ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 11) begin
if (family !== 21 ) begin $display("%b", family ); $stop(); end
if (family !== cat4 ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 12) begin
if (family !== 22 ) begin $display("%b", family ); $stop(); end
if (family !== cat5 ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 13) begin
if (family !== 30 ) begin $display("%b", family ); $stop(); end
if (family !== car3 ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 14) begin
if (family !== 31 ) begin $display("%b", family ); $stop(); end
if (family !== car2 ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
else if (cnt== 15) begin
if (family !== 32 ) begin $display("%b", family ); $stop(); end
if (family !== car1 ) begin $display("%b", family ); $stop(); end
family <= family.next();
end
end
endmodule
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