From 806d12c6e529373eb77fb851f060183a8ebcafd0 Mon Sep 17 00:00:00 2001
From: PlayJoker <jpeng.ustc@gmail.com>
Date: Tue, 3 Oct 2023 16:54:38 -0700
Subject: [PATCH] added capability for HDT to update asset token

---
 contracts/HDT/HDT.sol | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/contracts/HDT/HDT.sol b/contracts/HDT/HDT.sol
index d123598c..f8ecf3cc 100644
--- a/contracts/HDT/HDT.sol
+++ b/contracts/HDT/HDT.sol
@@ -14,6 +14,7 @@ import "../Errors.sol";
  */
 contract HDT is ERC20Upgradeable, OwnableUpgradeable, HDTStorage, IHDT {
     event PoolChanged(address pool);
+    event AssetTokenChanged(address oldToken, address newToken);
 
     constructor() {
         _disableInitializers();
@@ -48,6 +49,12 @@ contract HDT is ERC20Upgradeable, OwnableUpgradeable, HDTStorage, IHDT {
         emit PoolChanged(poolAddress);
     }
 
+    function setAssetToken(address newTokenAddress) external onlyOwner {
+        address oldTokenAddress = _assetToken;
+        _assetToken = newTokenAddress;
+        emit AssetTokenChanged(oldTokenAddress, newTokenAddress);
+    }
+
     function decimals() public view override returns (uint8) {
         return _decimals;
     }