dexorder

lib_openzeppelin_contracts/contracts/interfaces/IERC1363Spender.sol

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+// SPDX-License-Identifier: MIT
+// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC1363Spender.sol)
+
+pragma solidity ^0.8.20;
+
+/**
+ * @title ERC1363Spender
+ * @dev Interface for any contract that wants to support `approveAndCall`
+ * from ERC-1363 token contracts.
+ */
+interface IERC1363Spender {
+    /**
+     * @dev Whenever an ERC-1363 token `owner` approves this contract via `approveAndCall`
+     * to spend their tokens, this function is called.
+     *
+     * NOTE: To accept the approval, this must return
+     * `bytes4(keccak256("onApprovalReceived(address,uint256,bytes)"))`
+     * (i.e. 0x7b04a2d0, or its own function selector).
+     *
+     * @param owner The address which called `approveAndCall` function and previously owned the tokens.
+     * @param value The amount of tokens to be spent.
+     * @param data Additional data with no specified format.
+     * @return `bytes4(keccak256("onApprovalReceived(address,uint256,bytes)"))` if approval is allowed unless throwing.
+     */
+    function onApprovalReceived(address owner, uint256 value, bytes calldata data) external returns (bytes4);
+}