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Add return value to fungible allowance #36

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Jul 15, 2022
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Add return value to fungible allowance #36

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4 changes: 2 additions & 2 deletions hts-precompile/HederaTokenService.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -240,12 +240,12 @@ abstract contract HederaTokenService is HederaResponseCodes {
/// @param owner the owner of the tokens to be spent
/// @param spender the spender of the tokens
/// @return responseCode The response code for the status of the request. SUCCESS is 22.
function allowance(address token, address owner, address spender) internal returns (int responseCode)
function allowance(address token, address owner, address spender) internal returns (int responseCode, uint256 amount)
{
(bool success, bytes memory result) = precompileAddress.call(
abi.encodeWithSelector(IHederaTokenService.allowance.selector,
token, owner, spender));
responseCode = success ? abi.decode(result, (int32)) : HederaResponseCodes.UNKNOWN;
(responseCode, amount) = success ? abi.decode(result, (int32, uint256)) : (HederaResponseCodes.UNKNOWN, 0);
}

/// Allow or reaffirm the approved address to transfer an NFT the approved address does not own.
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