make getV3RelayHash public

Signed-off-by: bennett <[email protected]>

Author: bmzig

contracts/SpokePool.sol

@@ -1011,7 +1011,7 @@ abstract contract SpokePool is
 
         V3RelayExecutionParams memory relayExecution = V3RelayExecutionParams({
             relay: relayData,
-            relayHash: _getV3RelayHash(relayData),
+            relayHash: getV3RelayHash(relayData),
             updatedOutputAmount: relayData.outputAmount,
             updatedRecipient: relayData.recipient,
             updatedMessage: relayData.message,
@@ -1059,7 +1059,7 @@ abstract contract SpokePool is
 
         V3RelayExecutionParams memory relayExecution = V3RelayExecutionParams({
             relay: relayData,
-            relayHash: _getV3RelayHash(relayData),
+            relayHash: getV3RelayHash(relayData),
             updatedOutputAmount: updatedOutputAmount,
             updatedRecipient: updatedRecipient,
             updatedMessage: updatedMessage,
@@ -1106,7 +1106,7 @@ abstract contract SpokePool is
         }
         if (relayData.fillDeadline < currentTime) revert ExpiredFillDeadline();
 
-        bytes32 relayHash = _getV3RelayHash(relayData);
+        bytes32 relayHash = getV3RelayHash(relayData);
         if (fillStatuses[relayHash] != uint256(FillStatus.Unfilled)) revert InvalidSlowFillRequest();
         fillStatuses[relayHash] = uint256(FillStatus.RequestedSlowFill);
 
@@ -1195,7 +1195,7 @@ abstract contract SpokePool is
         // deposit params like outputAmount, message and recipient.
         V3RelayExecutionParams memory relayExecution = V3RelayExecutionParams({
             relay: relayData,
-            relayHash: _getV3RelayHash(relayData),
+            relayHash: getV3RelayHash(relayData),
             updatedOutputAmount: slowFillLeaf.updatedOutputAmount,
             updatedRecipient: relayData.recipient,
             updatedMessage: relayData.message,
@@ -1315,6 +1315,10 @@ abstract contract SpokePool is
         return relayerRefund[l2TokenAddress][refundAddress];
     }
 
+    function getV3RelayHash(V3RelayData memory relayData) public view returns (bytes32) {
+        return keccak256(abi.encode(relayData, chainId()));
+    }
+
     /**************************************
      *         INTERNAL FUNCTIONS         *
      **************************************/
@@ -1640,10 +1644,6 @@ abstract contract SpokePool is
         return (amount * uint256(int256(1e18) - feesPct)) / 1e18;
     }
 
-    function _getV3RelayHash(V3RelayData memory relayData) private view returns (bytes32) {
-        return keccak256(abi.encode(relayData, chainId()));
-    }
-
     // Unwraps ETH and does a transfer to a recipient address. If the recipient is a smart contract then sends wrappedNativeToken.
     function _unwrapwrappedNativeTokenTo(address payable to, uint256 amount) internal {
         if (address(to).isContract()) {