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Add a balance check for Whitelist adding #6

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Add a balance check for Whitelist adding #6

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6 changes: 6 additions & 0 deletions src/ERC404.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ abstract contract Ownable {

error Unauthorized();
error InvalidOwner();
error InvalidHolder();

address public owner;

Expand Down Expand Up @@ -158,6 +159,11 @@ abstract contract ERC404 is Ownable {
/// @notice Initialization function to set pairs / etc
/// saving gas by avoiding mint / burn on unnecessary targets
function setWhitelist(address target, bool state) public onlyOwner {
uint256 unit = _getUnit();

if (balanceOf[target] / unit >= 1) {
revert InvalidHolder();
}
whitelist[target] = state;
}

Expand Down