{
    "Function": "approve",
    "File": "src/DelegateToken.sol",
    "Parent Contracts": [
        "src/interfaces/IDelegateToken.sol",
        "lib/openzeppelin-contracts/contracts/interfaces/IERC2981.sol",
        "lib/openzeppelin-contracts/contracts/token/ERC1155/IERC1155Receiver.sol",
        "lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol",
        "lib/openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Metadata.sol",
        "lib/openzeppelin-contracts/contracts/token/ERC721/IERC721.sol",
        "lib/openzeppelin-contracts/contracts/utils/introspection/IERC165.sol",
        "lib/openzeppelin-contracts/contracts/security/ReentrancyGuard.sol"
    ],
    "High-Level Calls": [
        "DelegateTokenRegistryHelpers",
        "DelegateTokenStorageHelpers",
        "DelegateTokenStorageHelpers",
        "DelegateTokenStorageHelpers",
        "DelegateTokenStorageHelpers"
    ],
    "Internal Calls": [],
    "Library Calls": [
        "readRegistryHash",
        "loadTokenHolder",
        "writeApproved",
        "revertNotMinted",
        "revertNotOperator"
    ],
    "Low-Level Calls": [],
    "Code": "function approve(address spender, uint256 delegateTokenId) external {\n        bytes32 registryHash = StorageHelpers.readRegistryHash(delegateTokenInfo, delegateTokenId);\n        StorageHelpers.revertNotMinted(registryHash, delegateTokenId);\n        address delegateTokenHolder = RegistryHelpers.loadTokenHolder(delegateRegistry, registryHash);\n        StorageHelpers.revertNotOperator(accountOperator, delegateTokenHolder);\n        StorageHelpers.writeApproved(delegateTokenInfo, delegateTokenId, spender);\n        emit Approval(delegateTokenHolder, spender, delegateTokenId);\n    }"
}