lib_sol8->lib_uniswap

lib_uniswap/v3-periphery/contracts/interfaces/IERC721Permit.sol

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+// SPDX-License-Identifier: GPL-2.0-or-later
+pragma solidity >=0.7.5;
+
+import '@openzeppelin/contracts/token/ERC721/IERC721.sol';
+
+/// @title ERC721 with permit
+/// @notice Extension to ERC721 that includes a permit function for signature based approvals
+interface IERC721Permit is IERC721 {
+    /// @notice The permit typehash used in the permit signature
+    /// @return The typehash for the permit
+    function PERMIT_TYPEHASH() external pure returns (bytes32);
+
+    /// @notice The domain separator used in the permit signature
+    /// @return The domain seperator used in encoding of permit signature
+    function DOMAIN_SEPARATOR() external view returns (bytes32);
+
+    /// @notice Approve of a specific token ID for spending by spender via signature
+    /// @param spender The account that is being approved
+    /// @param tokenId The ID of the token that is being approved for spending
+    /// @param deadline The deadline timestamp by which the call must be mined for the approve to work
+    /// @param v Must produce valid secp256k1 signature from the holder along with `r` and `s`
+    /// @param r Must produce valid secp256k1 signature from the holder along with `v` and `s`
+    /// @param s Must produce valid secp256k1 signature from the holder along with `r` and `v`
+    function permit(
+        address spender,
+        uint256 tokenId,
+        uint256 deadline,
+        uint8 v,
+        bytes32 r,
+        bytes32 s
+    ) external payable;
+}