use ERC20 datatype

contracts/core/DataTypes.sol

@@ -1,6 +1,8 @@
 // SPDX-License-Identifier: MIT
 pragma solidity 0.8.19;
 
+import { ERC20 } from "../lib/tokens/ERC20.sol";
+
 library DataTypes {
     struct Lock {
         uint256 sellerKey;
@@ -18,7 +20,7 @@ library DataTypes {
         /// @dev Relayer's target address that receives `relayerPremium` funds.
         /// @dev Reputation points accruer.
         address relayerAddress;
-        address token;
+        ERC20 token;
     }
 
     // prettier-ignore

contracts/core/EventAndErrors.sol

@@ -1,6 +1,8 @@
 // SPDX-License-Identifier: MIT
 pragma solidity 0.8.19;
 
+import { ERC20 } from "../lib/tokens/ERC20.sol";
+
 // prettier-ignore
 interface EventAndErrors {
     /// ███ Events ████████████████████████████████████████████████████████████
@@ -9,19 +11,19 @@ interface EventAndErrors {
     event DepositAdded(
         address indexed seller,
         // uint256 depositID,
-        address token,
+        ERC20 token,
         uint256 amount
     );
     /// @dev 0xca585721b6b442dc9183932f7c84dc2880efb67c4da52cc06873e78971105d49
     event ValidSet(
         address indexed seller,
-        address token,
+        ERC20 token,
         bool state
     );
     /// @dev 0x2cd6435b1b961c13f55202979edd0765a809f69a539d8a477436c94c1211e43e
     event DepositWithdrawn(
         address indexed seller,
-        address token,
+        ERC20 token,
         uint256 amount
     );
     /// @dev 0x8fb3989f70bd172a37d15b41b015e48ea09d59329638377304a4198cd0c4ea65

contracts/core/OwnerSettings.sol

@@ -29,7 +29,7 @@ abstract contract OwnerSettings is
         uint256 defaultBlocks,
         address[] memory validSigners,
         address _reputation,
-        address[] memory tokens,
+        ERC20[] memory tokens,
         bool[] memory tokenStates
     ) {
         setDefaultLockBlocks(defaultBlocks);
@@ -89,7 +89,7 @@ abstract contract OwnerSettings is
     }
 
     function tokenSettings(
-        address[] memory _tokens,
+        ERC20[] memory _tokens,
         bool[] memory _states
     ) public onlyOwner {
         /* Yul Impl */

contracts/p2pix.sol

@@ -38,7 +38,7 @@ contract P2PIX is BaseUtils, ReentrancyGuard {
         uint256 defaultBlocks,
         address[] memory validSigners,
         address _reputation,
-        address[] memory tokens,
+        ERC20[] memory tokens,
         bool[] memory tokenStates
     ) 
         OwnerSettings(
@@ -60,7 +60,7 @@ contract P2PIX is BaseUtils, ReentrancyGuard {
     /// as the deposit identifier.
     /// @dev Function sighash: 0xbfe07da6.
     function deposit(
-        address _token,
+        ERC20 _token,
         uint96 _amount,
         uint160 _pixTarget,
         bool _valid,
@@ -132,7 +132,7 @@ contract P2PIX is BaseUtils, ReentrancyGuard {
 
             _setSellerBalance(key, token, _sellerBalance);
 
-            emit ValidSet(msg.sender, address(token), state);
+            emit ValidSet(msg.sender, token, state);
         } else revert NotInitialized();
     }
 
@@ -156,7 +156,7 @@ contract P2PIX is BaseUtils, ReentrancyGuard {
     /// @dev Function sighash: 0x03aaf306.
     function lock(
         address _seller,
-        address _token,
+        ERC20 _token,
         address _buyerAddress,
         uint80 _relayerPremium,
         uint80 _amount,
@@ -165,7 +165,7 @@ contract P2PIX is BaseUtils, ReentrancyGuard {
     ) public nonReentrant returns (uint256 lockID) {
         unlockExpired(expiredLocks);
 
-        ERC20 t = ERC20(_token);
+        ERC20 t = _token;
         if (!getValid(_seller, t)) revert InvalidDeposit();
 
         uint256 bal = getBalance(_seller, t);
@@ -200,7 +200,7 @@ contract P2PIX is BaseUtils, ReentrancyGuard {
             _amount,
             _buyerAddress,
             msg.sender,
-            address(t)
+            t
         );
 
         lockID = _addLock(bal, _amount, cCounter, l, t, k);
@@ -310,12 +310,12 @@ contract P2PIX is BaseUtils, ReentrancyGuard {
 
             _notExpired(l);
 
-            uint256 _sellerBalance = sellerBalance(l.sellerKey, ERC20(l.token)) & BITMASK_SB_ENTRY;
+            uint256 _sellerBalance = sellerBalance(l.sellerKey, l.token) & BITMASK_SB_ENTRY;
 
             if ((_sellerBalance + l.amount) > MAXBALANCE_UPPERBOUND)
                 revert MaxBalExceeded();
 
-            _addSellerBalance(l.sellerKey, ERC20(l.token), l.amount);
+            _addSellerBalance(l.sellerKey, l.token, l.amount);
 
             l.amount = 0;
 
@@ -377,7 +377,7 @@ contract P2PIX is BaseUtils, ReentrancyGuard {
 
         emit DepositWithdrawn(
             msg.sender,
-            address(token),
+            token,
             amount
         );
     }