erc20 proxy deploy

script/Deploy.s.sol

@@ -8,6 +8,7 @@ import {JBProjects} from "src/JBProjects.sol";
 import {JBPrices} from "src/JBPrices.sol";
 import {JBRulesets} from "src/JBRulesets.sol";
 import {JBDirectory} from "src/JBDirectory.sol";
+import {JBERC20} from "src/JBERC20.sol";
 import {JBTokens} from "src/JBTokens.sol";
 import {JBSplits} from "src/JBSplits.sol";
 import {JBFeelessAddresses} from "src/JBFeelessAddresses.sol";
@@ -74,7 +75,7 @@ contract Deploy is Script {
                     projects: projects,
                     directory: directory,
                     rulesets: rulesets,
-                    tokens: new JBTokens(directory),
+                    tokens: new JBTokens(directory, new JBERC20()),
                     splits: splits,
                     fundAccessLimits: new JBFundAccessLimits(directory),
                     trustedForwarder: trustedForwarder

src/JBERC20.sol

@@ -8,10 +8,30 @@ import {IJBToken} from "./interfaces/IJBToken.sol";
 
 /// @notice An ERC-20 token that can be used by a project in the `JBTokens`.
 contract JBERC20 is ERC20Votes, ERC20Permit, Ownable, IJBToken {
+    //*********************************************************************//
+    // --------------------- internal stored properties ------------------ //
+    //*********************************************************************//
+
+    /// @notice The token's name.
+    string private _name;
+
+    /// @notice The token's symbol.
+    string private _symbol;
+
     //*********************************************************************//
     // -------------------------- public views --------------------------- //
     //*********************************************************************//
 
+    /// @notice The token's name.
+    function name() public view virtual override returns (string memory) {
+        return _name;
+    }
+
+    /// @notice The token's symbol.
+    function symbol() public view virtual override returns (string memory) {
+        return _symbol;
+    }
+
     /// @notice The number of decimals included in the fixed point accounting of this token.
     /// @return The number of decimals.
     function decimals() public view override(ERC20, IJBToken) returns (uint8) {
@@ -35,18 +55,7 @@ contract JBERC20 is ERC20Votes, ERC20Permit, Ownable, IJBToken {
     // -------------------------- constructor ---------------------------- //
     //*********************************************************************//
 
-    /// @param name The name of the token.
-    /// @param symbol The symbol that the token should be represented by.
-    /// @param owner The owner of the token.
-    constructor(
-        string memory name,
-        string memory symbol,
-        address owner
-    )
-        ERC20(name, symbol)
-        ERC20Permit(name)
-        Ownable(owner)
-    {}
+    constructor() Ownable(address(this)) ERC20("", "") ERC20Permit("JBToken") {}
 
     //*********************************************************************//
     // ---------------------- external transactions ---------------------- //
@@ -68,6 +77,25 @@ contract JBERC20 is ERC20Votes, ERC20Permit, Ownable, IJBToken {
         return _burn(account, amount);
     }
 
+    //*********************************************************************//
+    // ----------------------- public transactions ----------------------- //
+    //*********************************************************************//
+
+    /// @notice Initialized the token.
+    /// @param name_ The name of the token.
+    /// @param symbol_ The symbol that the token should be represented by.
+    /// @param owner The owner of the token.
+    function initialize(string memory name_, string memory symbol_, address owner) public override {
+        // Stop re-initialization.
+        if (this.owner() != address(0) || owner == address(0)) revert();
+
+        _name = name_;
+        _symbol = symbol_;
+
+        // Transfer ownership to the initializer.
+        _transferOwnership(owner);
+    }
+
     /// @notice required override.
     function nonces(address owner) public view virtual override(ERC20Permit, Nonces) returns (uint256) {
         return super.nonces(owner);

src/JBTokens.sol

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: MIT
 pragma solidity 0.8.23;
 
+import {Clones} from "@openzeppelin/contracts/proxy/Clones.sol";
 import {JBControlled} from "./abstract/JBControlled.sol";
 import {IJBDirectory} from "./interfaces/IJBDirectory.sol";
 import {IJBToken} from "./interfaces/IJBToken.sol";
@@ -30,6 +31,12 @@ contract JBTokens is JBControlled, IJBTokens {
     error TOKENS_MUST_HAVE_18_DECIMALS();
     error OVERFLOW_ALERT();
 
+    //*********************************************************************//
+    // --------------- public immutable stored properties ---------------- //
+    //*********************************************************************//
+
+    IJBToken public immutable TOKEN;
+
     //*********************************************************************//
     // --------------------- public stored properties -------------------- //
     //*********************************************************************//
@@ -97,7 +104,10 @@ contract JBTokens is JBControlled, IJBTokens {
     //*********************************************************************//
 
     /// @param directory A contract storing directories of terminals and controllers for each project.
-    constructor(IJBDirectory directory) JBControlled(directory) {}
+    /// @param token The implementation of the token contract that project can deploy.
+    constructor(IJBDirectory directory, IJBToken token) JBControlled(directory) {
+        TOKEN = token;
+    }
 
     //*********************************************************************//
     // ---------------------- external transactions ---------------------- //
@@ -131,8 +141,11 @@ contract JBTokens is JBControlled, IJBTokens {
         if (tokenOf[projectId] != IJBToken(address(0))) revert PROJECT_ALREADY_HAS_TOKEN();
 
         token = salt == bytes32(0)
-            ? new JBERC20(name, symbol, address(this))
-            : new JBERC20{salt: salt}(name, symbol, address(this));
+            ? IJBToken(Clones.clone(address(TOKEN)))
+            : IJBToken(Clones.cloneDeterministic(address(TOKEN), keccak256(abi.encode(msg.sender, salt))));
+
+        // Initialize the token.
+        token.initialize({name: name, symbol: symbol, owner: address(this)});
 
         // Store the token contract.
         tokenOf[projectId] = token;

src/interfaces/IJBToken.sol

@@ -11,4 +11,6 @@ interface IJBToken {
     function mint(address account, uint256 amount) external;
 
     function burn(address account, uint256 amount) external;
+
+    function initialize(string memory name, string memory symbol, address owner) external;
 }

test/TestTokenFlow.sol

@@ -74,9 +74,8 @@ contract TestTokenFlow_Local is TestBaseWorkflow {
             _controller.deployERC20For({projectId: _projectId, name: "TestName", symbol: "TestSymbol", salt: bytes32(0)});
         } else {
             // Create a new `IJBToken` and change it's owner to the `JBTokens` contract.
-            IJBToken _newToken = new JBERC20({name: "NewTestName", symbol: "NewTestSymbol", owner: _projectOwner});
-
-            Ownable(address(_newToken)).transferOwnership(address(_tokens));
+            IJBToken _newToken = IJBToken(Clones.clone(address(new JBERC20())));
+            _newToken.initialize({name: "NewTestName", symbol: "NewTestSymbol", owner: address(_tokens)});
 
             // Set the projects token to `_newToken`.
             _controller.setTokenFor(_projectId, _newToken);

test/helpers/TestBaseWorkflow.sol

@@ -6,6 +6,7 @@ import "forge-std/Test.sol";
 import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
 import {IERC721Metadata} from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
 import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
+import {Clones} from "@openzeppelin/contracts/proxy/Clones.sol";
 import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
 import {ERC165, IERC165} from "@openzeppelin/contracts/utils/introspection/ERC165.sol";
 import {JBPermissionIds} from "@bananapus/permission-ids/src/JBPermissionIds.sol";
@@ -100,6 +101,7 @@ contract TestBaseWorkflow is Test, DeployPermit2 {
     JBPrices private _jbPrices;
     JBDirectory private _jbDirectory;
     JBRulesets private _jbRulesets;
+    JBERC20 private _jbErc20;
     JBTokens private _jbTokens;
     JBSplits private _jbSplits;
     JBController private _jbController;
@@ -146,6 +148,10 @@ contract TestBaseWorkflow is Test, DeployPermit2 {
         return _jbRulesets;
     }
 
+    function jbErc20() internal view returns (JBERC20) {
+        return _jbErc20;
+    }
+
     function jbTokens() internal view returns (JBTokens) {
         return _jbTokens;
     }
@@ -192,7 +198,8 @@ contract TestBaseWorkflow is Test, DeployPermit2 {
         _jbProjects = new JBProjects(_multisig);
         _jbPrices = new JBPrices(_jbPermissions, _jbProjects, _multisig);
         _jbDirectory = new JBDirectory(_jbPermissions, _jbProjects, _multisig);
-        _jbTokens = new JBTokens(_jbDirectory);
+        _jbErc20 = new JBERC20();
+        _jbTokens = new JBTokens(_jbDirectory, _jbErc20);
         _jbRulesets = new JBRulesets(_jbDirectory);
         _jbSplits = new JBSplits(_jbDirectory);
         _jbFundAccessLimits = new JBFundAccessLimits(_jbDirectory);