{
    "Function": "onERC721Received",
    "File": "src/transformers/V3Utils.sol",
    "Parent Contracts": [
        "lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol",
        "src/utils/Swapper.sol",
        "src/interfaces/IErrors.sol",
        "lib/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol"
    ],
    "High-Level Calls": [
        "INonfungiblePositionManager"
    ],
    "Internal Calls": [
        "abi.decode()",
        "revert SelfSend()",
        "execute",
        "revert WrongContract()"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function onERC721Received(address, address from, uint256 tokenId, bytes calldata data)\n        external\n        override\n        returns (bytes4)\n    {\n        // only Uniswap v3 NFTs allowed\n        if (msg.sender != address(nonfungiblePositionManager)) {\n            revert WrongContract();\n        }\n\n        // not allowed to send to itself\n        if (from == address(this)) {\n            revert SelfSend();\n        }\n\n        Instructions memory instructions = abi.decode(data, (Instructions));\n\n        execute(tokenId, instructions);\n\n        // return token to owner (this line guarantees that token is returned to originating owner)\n        nonfungiblePositionManager.safeTransferFrom(address(this), from, tokenId, instructions.returnData);\n\n        return IERC721Receiver.onERC721Received.selector;\n    }"
}