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Implement the execution interface

Overview​

The IExecution contract allows executing an Order, getting a list of authorized callers, and checking the execution status. You can use this execution interface to create custom Orders.

Directory

Store IExecution in the src directory, alongside with other contracts.

Full code

You can find the full code on GitHub: src/IExecution.sol

Create the IExecution contract​

Implement the execution interface in a file IExecution.sol:

src/IExecution.sol
interface IExecution {
    // Check if an Order can be executed
    function canExecute() external view returns (bool);
    
    // Execute an Order
    function execute(
        uint256 nonce,
        uint256 gas,
        uint256 gasPrice,
        uint256 maxPriorityFeePerGas,  // for EIP-1559 transactions
        uint256 maxFeePerGas           // for EIP-1559 transactions
    ) external returns (bool, bytes32);
    
    // Get a list of authorized callers
    function callers() external returns (Caller[] memory callersList);
    
    // Check the execution status
    function isExecuted() external returns (bool);
}

Next steps​