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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 PlanV GmbH.
// SPDX-License-Identifier: CC0-1.0
// Enum-based associative array
typedef enum { RED, GREEN, YELLOW } color_t;
class AssocArrayEnum;
rand bit [7:0] colors [color_t];
constraint c1 { foreach (colors[i]) colors[i] == 4; }
function new();
colors[RED] = 8'd5;
colors[GREEN] = 8'd10;
colors[YELLOW] = 8'd15;
endfunction
function void self_check();
foreach (colors[i]) begin
if (colors[i] != 4) $stop;
end
endfunction
endclass
// Struct (packed) index associative array
typedef struct packed {
bit [2:0] high;
bit [1:0] low;
} PackedIndexType;
class AssocArrayPackedStruct;
rand bit [31:0] data [PackedIndexType];
constraint c2 { foreach (data[i]) data[i] == 100; }
function new();
PackedIndexType idx;
idx.high = 3'd1;
idx.low = 2'd1;
data[idx] = 32'd50;
endfunction
function void self_check();
foreach (data[i]) begin
if (data[i] != 100) $stop;
end
endfunction
endclass
// Array (packed) index associative array
typedef logic [2:0][7:0] IndexArrayType;
class AssocArrayArrayIndex;
rand bit [31:0] data [IndexArrayType];
constraint c3 { foreach (data[i]) data[i] == 0; }
function new();
IndexArrayType idx;
idx = 0;
data[idx] = 32'd75;
endfunction
function void self_check();
foreach (data[i]) begin
if (data[i] != 0) $stop;
end
endfunction
endclass
module t_constraint_assoc_array_others;
AssocArrayEnum enum_arr;
AssocArrayPackedStruct packed_arr;
AssocArrayArrayIndex array_arr;
int success = 0;
initial begin
// Create instances of the classes
enum_arr = new();
packed_arr = new();
array_arr = new();
// Randomization and self-check
success = enum_arr.randomize();
if (success != 1) $stop;
enum_arr.self_check();
success = packed_arr.randomize();
if (success != 1) $stop;
packed_arr.self_check();
success = array_arr.randomize();
if (success != 1) $stop;
array_arr.self_check();
$write("*-* All Finished *-*");
$finish;
end
endmodule
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