ERC-7540 - Add IERC7540 interface

Author: DeeJayElly

contracts/interfaces/IERC7540.sol

@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.20;
+
+import {IERC4626} from "../interfaces/IERC4626.sol";
+
+/**
+ * @dev Interface for the ERC-7540 Asynchronous Tokenized Vaults standard.
+ * https://eips.ethereum.org/EIPS/eip-7540[ERC-7540]
+ */
+interface IERC7540 is IERC4626 {
+    // Events
+    event DepositRequest(
+        address indexed controller,
+        address indexed owner,
+        uint256 indexed requestId,
+        address sender,
+        uint256 assets
+    );
+
+    event RedeemRequest(
+        address indexed controller,
+        address indexed owner,
+        uint256 indexed requestId,
+        address sender,
+        uint256 shares
+    );
+
+    event OperatorSet(address indexed controller, address indexed operator, bool approved);
+
+    // Methods
+
+    /**
+     * @dev Initiates a deposit request.
+     * @param assets The amount of assets to deposit.
+     * @param controller The address of the controller managing the request.
+     * @param owner The owner of the assets.
+     * @return requestId The unique identifier for this deposit request.
+     */
+    function requestDeposit(uint256 assets, address controller, address owner) external returns (uint256 requestId);
+
+    /**
+     * @dev Initiates a redeem request.
+     * @param shares The amount of shares to redeem.
+     * @param controller The address of the controller managing the request.
+     * @param owner The owner of the shares.
+     * @return requestId The unique identifier for this redeem request.
+     */
+    function requestRedeem(uint256 shares, address controller, address owner) external returns (uint256 requestId);
+
+    /**
+     * @dev Gets the pending deposit request amount for a given controller and requestId.
+     * @param requestId The unique identifier for the request.
+     * @param controller The address of the controller.
+     * @return assets The amount of assets in the pending state.
+     */
+    function pendingDepositRequest(uint256 requestId, address controller) external view returns (uint256 assets);
+
+    /**
+     * @dev Gets the claimable deposit request amount for a given controller and requestId.
+     * @param requestId The unique identifier for the request.
+     * @param controller The address of the controller.
+     * @return assets The amount of assets in the claimable state.
+     */
+    function claimableDepositRequest(uint256 requestId, address controller) external view returns (uint256 assets);
+
+    /**
+     * @dev Gets the pending redeem request amount for a given controller and requestId.
+     * @param requestId The unique identifier for the request.
+     * @param controller The address of the controller.
+     * @return shares The amount of shares in the pending state.
+     */
+    function pendingRedeemRequest(uint256 requestId, address controller) external view returns (uint256 shares);
+
+    /**
+     * @dev Gets the claimable redeem request amount for a given controller and requestId.
+     * @param requestId The unique identifier for the request.
+     * @param controller The address of the controller.
+     * @return shares The amount of shares in the claimable state.
+     */
+    function claimableRedeemRequest(uint256 requestId, address controller) external view returns (uint256 shares);
+
+    /**
+     * @dev Sets or revokes an operator for the given controller.
+     * @param operator The address of the operator.
+     * @param approved The approval status of the operator.
+     * @return success Whether the operation was successful.
+     */
+    function setOperator(address operator, bool approved) external returns (bool success);
+
+    /**
+     * @dev Checks if an operator is approved for a controller.
+     * @param controller The address of the controller.
+     * @param operator The address of the operator.
+     * @return status Whether the operator is approved.
+     */
+    function isOperator(address controller, address operator) external view returns (bool status);
+}