clarify AxelarGatewayDestination._execute

Author: Amxx

contracts/crosschain/axelar/AxelarGatewayDestination.sol

@@ -55,34 +55,35 @@ abstract contract AxelarGatewayDestination is IERC7786GatewayDestinationPassive,
      *
      * In this function:
      *
-     * - `remoteChain` is in the Axelar format. It should not be expected to be a proper CAIP-2 format
-     * - `remoteAccount` is the sender of the crosschain message. That should be the remote gateway on the chain which
-     *   the message originates from. It is NOT the sender of the crosschain message
+     * - `axelarSourceChain` is in the Axelar format. It should not be expected to be a proper CAIP-2 format
+     * - `axelarSourceAddress` is the sender of the Axelar message. That should be the remote gateway on the chain
+     *   which the message originates from. It is NOT the sender of the ERC-7786 crosschain message.
      *
      * Proper CAIP-10 encoding of the message sender (including the CAIP-2 name of the origin chain can be found in
      * the message)
      */
     function _execute(
-        string calldata remoteChain, // chain of the remote gateway - axelar format
-        string calldata remoteAccount, // address of the remote gateway
+        string calldata axelarSourceChain, // chain of the remote gateway - axelar format
+        string calldata axelarSourceAddress, // address of the remote gateway
         bytes calldata adapterPayload
     ) internal override {
         // Parse the package
         (string memory sender, string memory receiver, bytes memory payload, bytes[] memory attributes) = abi.decode(
             adapterPayload,
             (string, string, bytes, bytes[])
         );
-        string memory source = getEquivalentChain(remoteChain);
+        // Axelar to CAIP-2 translation
+        string memory sourceChain = getEquivalentChain(axelarSourceChain);
 
         // check message validity
-        // - `remoteAccount` is the remote gateway on the origin chain.
-        require(getRemoteGateway(source).equal(remoteAccount), "Invalid origin gateway");
+        // - `axelarSourceAddress` is the remote gateway on the origin chain.
+        require(getRemoteGateway(sourceChain).equal(axelarSourceAddress), "Invalid origin gateway");
 
         // Active mode
         bytes4 result = IERC7786Receiver(receiver.parseAddress()).executeMessage(
             address(0), // not needed in active mode
             new bytes(0), // not needed in active mode
-            source,
+            sourceChain,
             sender,
             payload,
             attributes