fix: use lib for encoding / decoding

src/BribeInitiative.sol

@@ -10,6 +10,10 @@ import {IBribeInitiative} from "./interfaces/IBribeInitiative.sol";
 
 import {DoubleLinkedList} from "./utils/DoubleLinkedList.sol";
 
+
+import {EncodingDecodingLib} from "src/utils/EncodingDecodingLib.sol";
+
+
 contract BribeInitiative is IInitiative, IBribeInitiative {
     using SafeERC20 for IERC20;
     using DoubleLinkedList for DoubleLinkedList.List;
@@ -162,8 +166,11 @@ contract BribeInitiative is IInitiative, IBribeInitiative {
         emit ModifyLQTYAllocation(_user, _epoch, _lqty, _averageTimestamp);
     }
 
+    function _encodeLQTYAllocation(uint88 _lqty, uint32 _averageTimestamp) private pure returns (uint224) {
+        return EncodingDecodingLib.encodeLQTYAllocation(_lqty, _averageTimestamp);
+    }
     function _decodeLQTYAllocation(uint224 _value) private pure returns (uint88, uint32) {
-        return (uint88(_value >> 32), uint32(_value));
+        return EncodingDecodingLib.decodeLQTYAllocation(_value);
     }
 
     function _loadTotalLQTYAllocation(uint16 _epoch) private view returns (uint88, uint32) {

src/utils/EncodingDecodingLib.sol

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.24;
+
+library EncodingDecodingLib {
+    function encodeLQTYAllocation(uint88 _lqty, uint32 _averageTimestamp) public pure returns (uint224) {
+        uint224 _value = (uint224(_lqty) << 32) | _averageTimestamp;
+        return _value;
+    }
+
+    function decodeLQTYAllocation(uint224 _value) public pure returns (uint88, uint32) {
+        return (uint88(_value >> 32), uint32(_value));
+    }
+}

test/EncodingDecoding.t.sol

@@ -3,29 +3,20 @@ pragma solidity ^0.8.24;
 
 import {Test, console2} from "forge-std/Test.sol";
 
-library EncodingDecoding {
-    function encodeLQTYAllocation(uint88 _lqty, uint32 _averageTimestamp) public pure returns (uint224) {
-        uint224 _value = (uint224(_lqty) << 32) | _averageTimestamp;
-        return _value;
-    }
-
-    function decodeLQTYAllocation(uint224 _value) public pure returns (uint88, uint32) {
-        return (uint88(_value >> 32), uint32(_value));
-    }
-}
+import {EncodingDecodingLib} from "src/utils/EncodingDecodingLib.sol";
 
 contract EncodingDecodingTest is Test {
     // value -> encoding -> decoding -> value 
     function test_encoding_and_decoding_symmetrical(uint88 lqty, uint32 averageTimestamp) public {
-        uint224 encodedValue = EncodingDecoding.encodeLQTYAllocation(lqty, averageTimestamp);
-        (uint88 decodedLqty, uint32 decodedAverageTimestamp) = EncodingDecoding.decodeLQTYAllocation(encodedValue);
+        uint224 encodedValue = EncodingDecodingLib.encodeLQTYAllocation(lqty, averageTimestamp);
+        (uint88 decodedLqty, uint32 decodedAverageTimestamp) = EncodingDecodingLib.decodeLQTYAllocation(encodedValue);
 
         assertEq(lqty, decodedLqty);
         assertEq(averageTimestamp, decodedAverageTimestamp);
 
         // Redo
-        uint224 reEncoded = EncodingDecoding.encodeLQTYAllocation(decodedLqty, decodedAverageTimestamp);
-        (uint88 reDecodedLqty, uint32 reDecodedAverageTimestamp) = EncodingDecoding.decodeLQTYAllocation(encodedValue);
+        uint224 reEncoded = EncodingDecodingLib.encodeLQTYAllocation(decodedLqty, decodedAverageTimestamp);
+        (uint88 reDecodedLqty, uint32 reDecodedAverageTimestamp) = EncodingDecodingLib.decodeLQTYAllocation(encodedValue);
 
         assertEq(reEncoded, encodedValue);
         assertEq(reDecodedLqty, decodedLqty);
@@ -46,10 +37,10 @@ contract EncodingDecodingTest is Test {
     // receive -> undo -> check -> redo -> compare
     function _receive_undo_compare(uint224 encodedValue) public {
         /// These values fail because we could pass a value that is bigger than intended
-        (uint88 decodedLqty, uint32 decodedAverageTimestamp) = EncodingDecoding.decodeLQTYAllocation(encodedValue);
+        (uint88 decodedLqty, uint32 decodedAverageTimestamp) = EncodingDecodingLib.decodeLQTYAllocation(encodedValue);
 
-        uint224 encodedValue2 = EncodingDecoding.encodeLQTYAllocation(decodedLqty, decodedAverageTimestamp);
-        (uint88 decodedLqty2, uint32 decodedAverageTimestamp2) = EncodingDecoding.decodeLQTYAllocation(encodedValue2);
+        uint224 encodedValue2 = EncodingDecodingLib.encodeLQTYAllocation(decodedLqty, decodedAverageTimestamp);
+        (uint88 decodedLqty2, uint32 decodedAverageTimestamp2) = EncodingDecodingLib.decodeLQTYAllocation(encodedValue2);
 
         assertEq(encodedValue, encodedValue2, "encoded values not equal");
         assertEq(decodedLqty, decodedLqty2, "decoded lqty not equal");