{ "contractName": "TBTCDepositToken", "abi": [ { "inputs": [ { "internalType": "address", "name": "_depositFactoryAddress", "type": "address" } ], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "owner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "approved", "type": "address" }, { "indexed": true, "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "Approval", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "owner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "operator", "type": "address" }, { "indexed": false, "internalType": "bool", "name": "approved", "type": "bool" } ], "name": "ApprovalForAll", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "from", "type": "address" }, { "indexed": true, "internalType": "address", "name": "to", "type": "address" }, { "indexed": true, "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "approve", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "address", "name": "owner", "type": "address" } ], "name": "balanceOf", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "getApproved", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "_factory", "type": "address" } ], "name": "initialize", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "address", "name": "owner", "type": "address" }, { "internalType": "address", "name": "operator", "type": "address" } ], "name": "isApprovedForAll", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "name", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "ownerOf", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "safeTransferFrom", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" }, { "internalType": "bytes", "name": "_data", "type": "bytes" } ], "name": "safeTransferFrom", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "bool", "name": "approved", "type": "bool" } ], "name": "setApprovalForAll", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "bytes4", "name": "interfaceId", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "symbol", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "tokenURI", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "transferFrom", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "address", "name": "_to", "type": "address" }, { "internalType": "uint256", "name": "_tokenId", "type": "uint256" } ], "name": "mint", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "internalType": "uint256", "name": "_tokenId", "type": "uint256" } ], "name": "exists", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "internalType": "contract ITokenRecipient", "name": "_spender", "type": "address" }, { "internalType": "uint256", "name": "_tdtId", "type": "uint256" }, { "internalType": "bytes", "name": "_extraData", "type": "bytes" } ], "name": "approveAndCall", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.17+commit.d19bba13\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_depositFactoryAddress\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"contract ITokenRecipient\",\"name\":\"_spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"_tdtId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"_extraData\",\"type\":\"bytes\"}],\"name\":\"approveAndCall\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"_tokenId\",\"type\":\"uint256\"}],\"name\":\"exists\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"_factory\",\"type\":\"address\"}],\"name\":\"initialize\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"_to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"_tokenId\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"_data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Currently, TDTs are minted using the uint256 casting of the corresponding deposit contract's address. That is, the TDT's id is convertible to the deposit's address and vice versa. TDTs are minted automatically by the factory during each deposit's initialization. See DepositFactory.createNewDeposit() for more info on how the TDT is minted.\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"Approves another address to transfer the given token ID The zero address indicates there is no approved address. There can only be one approved address per token at a given time. Can only be called by the token owner or an approved operator.\",\"params\":{\"to\":\"address to be approved for the given token ID\",\"tokenId\":\"uint256 ID of the token to be approved\"}},\"approveAndCall(address,uint256,bytes)\":{\"details\":\"The `_spender` should implement the `ITokenRecipient` interface below to receive approval notifications.\",\"params\":{\"_extraData\":\"Extra information to send to the approved contract.\",\"_spender\":\"`ITokenRecipient`-conforming contract authorized to operate on the approved token.\",\"_tdtId\":\"The TDT they can spend.\"}},\"balanceOf(address)\":{\"details\":\"Gets the balance of the specified address.\",\"params\":{\"owner\":\"address to query the balance of\"},\"return\":\"uint256 representing the amount owned by the passed address\"},\"exists(uint256)\":{\"details\":\"Returns whether the specified token exists.\",\"params\":{\"_tokenId\":\"uint256 ID of the token to query the existence of.\"},\"return\":\"bool whether the token exists.\"},\"getApproved(uint256)\":{\"details\":\"Gets the approved address for a token ID, or zero if no address set Reverts if the token ID does not exist.\",\"params\":{\"tokenId\":\"uint256 ID of the token to query the approval of\"},\"return\":\"address currently approved for the given token ID\"},\"initialize(address)\":{\"details\":\"Since this function is not access-controlled, it should be called transactionally with contract instantiation. In cases where a regular contract directly inherits from DepositFactoryAuthority, that should happen in the constructor. In cases where the inheritor is binstead used via a clone factory, the same function that creates a new clone should also trigger initialization.\"},\"isApprovedForAll(address,address)\":{\"details\":\"Tells whether an operator is approved by a given owner.\",\"params\":{\"operator\":\"operator address which you want to query the approval of\",\"owner\":\"owner address which you want to query the approval of\"},\"return\":\"bool whether the given operator is approved by the given owner\"},\"mint(address,uint256)\":{\"details\":\"Mints a new token. Reverts if the given token ID already exists.\",\"params\":{\"_to\":\"The address that will own the minted token\",\"_tokenId\":\"uint256 ID of the token to be minted\"}},\"name()\":{\"details\":\"Gets the token name.\",\"return\":\"string representing the token name\"},\"ownerOf(uint256)\":{\"details\":\"Gets the owner of the specified token ID.\",\"params\":{\"tokenId\":\"uint256 ID of the token to query the owner of\"},\"return\":\"address currently marked as the owner of the given token ID\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"Safely transfers the ownership of a given token ID to another address If the target address is a contract, it must implement `onERC721Received`, which is called upon a safe transfer, and return the magic value `bytes4(keccak256(\\\"onERC721Received(address,address,uint256,bytes)\\\"))`; otherwise, the transfer is reverted. Requires the msg.sender to be the owner, approved, or operator\",\"params\":{\"from\":\"current owner of the token\",\"to\":\"address to receive the ownership of the given token ID\",\"tokenId\":\"uint256 ID of the token to be transferred\"}},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"Safely transfers the ownership of a given token ID to another address If the target address is a contract, it must implement `onERC721Received`, which is called upon a safe transfer, and return the magic value `bytes4(keccak256(\\\"onERC721Received(address,address,uint256,bytes)\\\"))`; otherwise, the transfer is reverted. Requires the msg.sender to be the owner, approved, or operator\",\"params\":{\"_data\":\"bytes data to send along with a safe transfer check\",\"from\":\"current owner of the token\",\"to\":\"address to receive the ownership of the given token ID\",\"tokenId\":\"uint256 ID of the token to be transferred\"}},\"setApprovalForAll(address,bool)\":{\"details\":\"Sets or unsets the approval of a given operator An operator is allowed to transfer all tokens of the sender on their behalf.\",\"params\":{\"approved\":\"representing the status of the approval to be set\",\"to\":\"operator address to set the approval\"}},\"supportsInterface(bytes4)\":{\"details\":\"See `IERC165.supportsInterface`. * Time complexity O(1), guaranteed to always use less than 30 000 gas.\"},\"symbol()\":{\"details\":\"Gets the token symbol.\",\"return\":\"string representing the token symbol\"},\"tokenURI(uint256)\":{\"details\":\"Returns an URI for a given token ID. Throws if the token ID does not exist. May return an empty string.\",\"params\":{\"tokenId\":\"uint256 ID of the token to query\"}},\"transferFrom(address,address,uint256)\":{\"details\":\"Transfers the ownership of a given token ID to another address. Usage of this method is discouraged, use `safeTransferFrom` whenever possible. Requires the msg.sender to be the owner, approved, or operator.\",\"params\":{\"from\":\"current owner of the token\",\"to\":\"address to receive the ownership of the given token ID\",\"tokenId\":\"uint256 ID of the token to be transferred\"}}},\"title\":\"tBTC Deposit Token for tracking deposit ownership\"},\"userdoc\":{\"methods\":{\"approveAndCall(address,uint256,bytes)\":{\"notice\":\"Allow another address to spend on the caller's behalf. Set allowance for other address and notify. Allows `_spender` to transfer the specified TDT on your behalf and then ping the contract about it.\"},\"initialize(address)\":{\"notice\":\"Set the address of the System contract on contract initialization.\"}},\"notice\":\"The tBTC Deposit Token, commonly referenced as the TDT, is an ERC721 non-fungible token whose ownership reflects the ownership of its corresponding deposit. Each deposit has one TDT, and vice versa. Owning a TDT is equivalent to owning its corresponding deposit. TDTs can be transferred freely. tBTC's VendingMachine contract takes ownership of TDTs and in exchange returns fungible TBTC tokens whose value is backed 1-to-1 by the corresponding deposit's 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"source": "pragma solidity 0.5.17;\n\nimport {\n ERC721Metadata\n} from \"openzeppelin-solidity/contracts/token/ERC721/ERC721Metadata.sol\";\nimport {DepositFactoryAuthority} from \"./DepositFactoryAuthority.sol\";\nimport {ITokenRecipient} from \"../interfaces/ITokenRecipient.sol\";\n\n/// @title tBTC Deposit Token for tracking deposit ownership\n/// @notice The tBTC Deposit Token, commonly referenced as the TDT, is an\n/// ERC721 non-fungible token whose ownership reflects the ownership\n/// of its corresponding deposit. Each deposit has one TDT, and vice\n/// versa. Owning a TDT is equivalent to owning its corresponding\n/// deposit. TDTs can be transferred freely. tBTC's VendingMachine\n/// contract takes ownership of TDTs and in exchange returns fungible\n/// TBTC tokens whose value is backed 1-to-1 by the corresponding\n/// deposit's BTC.\n/// @dev Currently, TDTs are minted using the uint256 casting of the\n/// corresponding deposit contract's address. That is, the TDT's id is\n/// convertible to the deposit's address and vice versa. TDTs are minted\n/// automatically by the factory during each deposit's initialization. See\n/// DepositFactory.createNewDeposit() for more info on how the TDT is minted.\ncontract TBTCDepositToken is ERC721Metadata, DepositFactoryAuthority {\n constructor(address _depositFactoryAddress)\n public\n ERC721Metadata(\"tBTC Deposit Token\", \"TDT\")\n {\n initialize(_depositFactoryAddress);\n }\n\n /// @dev Mints a new token.\n /// Reverts if the given token ID already exists.\n /// @param _to The address that will own the minted token\n /// @param _tokenId uint256 ID of the token to be minted\n function mint(address _to, uint256 _tokenId) external onlyFactory {\n _mint(_to, _tokenId);\n }\n\n /// @dev Returns whether the specified token exists.\n /// @param _tokenId uint256 ID of the token to query the existence of.\n /// @return bool whether the token exists.\n function exists(uint256 _tokenId) external view returns (bool) {\n return _exists(_tokenId);\n }\n\n /// @notice Allow another address to spend on the caller's behalf.\n /// Set allowance for other address and notify.\n /// Allows `_spender` to transfer the specified TDT\n /// on your behalf and then ping the contract about it.\n /// @dev The `_spender` should implement the `ITokenRecipient`\n /// interface below to receive approval notifications.\n /// @param _spender `ITokenRecipient`-conforming contract authorized to\n /// operate on the approved token.\n /// @param _tdtId The TDT they can spend.\n /// @param _extraData Extra information to send to the approved contract.\n function approveAndCall(\n ITokenRecipient _spender,\n uint256 _tdtId,\n bytes memory _extraData\n ) public returns (bool) {\n // not external to allow bytes memory parameters\n approve(address(_spender), _tdtId);\n _spender.receiveApproval(msg.sender, _tdtId, address(this), _extraData);\n return true;\n }\n}\n", "sourcePath": "/home/runner/work/tbtc/tbtc/solidity/contracts/system/TBTCDepositToken.sol", "ast": { "absolutePath": "/home/runner/work/tbtc/tbtc/solidity/contracts/system/TBTCDepositToken.sol", "exportedSymbols": { "TBTCDepositToken": [ 6844 ] }, "id": 6845, "nodeType": "SourceUnit", "nodes": [ { "id": 6759, "literals": [ "solidity", "0.5", ".17" ], "nodeType": "PragmaDirective", "src": "0:23:22" }, { "absolutePath": "openzeppelin-solidity/contracts/token/ERC721/ERC721Metadata.sol", "file": "openzeppelin-solidity/contracts/token/ERC721/ERC721Metadata.sol", "id": 6761, "nodeType": "ImportDirective", "scope": 6845, "sourceUnit": 18185, "src": "25:101:22", "symbolAliases": [ { "foreign": 6760, "local": null } ], "unitAlias": "" }, { "absolutePath": "/home/runner/work/tbtc/tbtc/solidity/contracts/system/DepositFactoryAuthority.sol", "file": "./DepositFactoryAuthority.sol", "id": 6763, "nodeType": "ImportDirective", "scope": 6845, "sourceUnit": 6252, "src": "127:70:22", "symbolAliases": [ { "foreign": 6762, "local": null } ], "unitAlias": "" }, { "absolutePath": "/home/runner/work/tbtc/tbtc/solidity/contracts/interfaces/ITokenRecipient.sol", "file": "../interfaces/ITokenRecipient.sol", "id": 6765, "nodeType": "ImportDirective", "scope": 6845, "sourceUnit": 5526, "src": "198:66:22", "symbolAliases": [ { "foreign": 6764, "local": null } ], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 6766, "name": "ERC721Metadata", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 18184, "src": "1298:14:22", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC721Metadata_$18184", "typeString": "contract ERC721Metadata" } }, "id": 6767, "nodeType": "InheritanceSpecifier", "src": "1298:14:22" }, { "arguments": null, "baseName": { "contractScope": null, "id": 6768, "name": "DepositFactoryAuthority", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 6251, "src": "1314:23:22", "typeDescriptions": { "typeIdentifier": "t_contract$_DepositFactoryAuthority_$6251", "typeString": "contract DepositFactoryAuthority" } }, "id": 6769, "nodeType": "InheritanceSpecifier", "src": "1314:23:22" } ], "contractDependencies": [ 6251, 16712, 16722, 18055, 18184, 18287, 18310 ], "contractKind": "contract", "documentation": "@title tBTC Deposit Token for tracking deposit ownership\n @notice The tBTC Deposit Token, commonly referenced as the TDT, is an\n ERC721 non-fungible token whose ownership reflects the ownership\n of its corresponding deposit. Each deposit has one TDT, and vice\n versa. Owning a TDT is equivalent to owning its corresponding\n deposit. TDTs can be transferred freely. tBTC's VendingMachine\n contract takes ownership of TDTs and in exchange returns fungible\n TBTC tokens whose value is backed 1-to-1 by the corresponding\n deposit's BTC.\n @dev Currently, TDTs are minted using the uint256 casting of the\n corresponding deposit contract's address. That is, the TDT's id is\n convertible to the deposit's address and vice versa. TDTs are minted\n automatically by the factory during each deposit's initialization. See\n DepositFactory.createNewDeposit() for more info on how the TDT is minted.", "fullyImplemented": true, "id": 6844, "linearizedBaseContracts": [ 6844, 6251, 18184, 18310, 18055, 18287, 16712, 16722 ], "name": "TBTCDepositToken", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 6782, "nodeType": "Block", "src": "1459:51:22", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6779, "name": "_depositFactoryAddress", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6771, "src": "1480:22:22", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 6778, "name": "initialize", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6233, "src": "1469:10:22", "typeDescriptions": { "typeIdentifier": 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false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2093:17:22", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 6804, "id": 6808, "nodeType": "Return", "src": "2086:24:22" } ] }, "documentation": "@dev Returns whether the specified token exists.\n @param _tokenId uint256 ID of the token to query the existence of.\n @return bool whether the token exists.", "id": 6810, "implemented": true, "kind": "function", "modifiers": [], "name": "exists", "nodeType": "FunctionDefinition", "parameters": { "id": 6801, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6800, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 6810, "src": "2029:16:22", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6799, "name": 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"functionReturnParameters": 6820, "id": 6841, "nodeType": "Return", "src": "3170:11:22" } ] }, "documentation": "@notice Allow another address to spend on the caller's behalf.\n Set allowance for other address and notify.\n Allows `_spender` to transfer the specified TDT\n on your behalf and then ping the contract about it.\n @dev The `_spender` should implement the `ITokenRecipient`\n interface below to receive approval notifications.\n @param _spender `ITokenRecipient`-conforming contract authorized to\n operate on the approved token.\n @param _tdtId The TDT they can spend.\n @param _extraData Extra information to send to the approved contract.", "id": 6843, "implemented": true, "kind": "function", "modifiers": [], "name": "approveAndCall", "nodeType": "FunctionDefinition", "parameters": { "id": 6817, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6812, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 6843, "src": "2868:24:22", "stateVariable": 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Each deposit has one TDT, and vice\n versa. Owning a TDT is equivalent to owning its corresponding\n deposit. TDTs can be transferred freely. tBTC's VendingMachine\n contract takes ownership of TDTs and in exchange returns fungible\n TBTC tokens whose value is backed 1-to-1 by the corresponding\n deposit's BTC.\n @dev Currently, TDTs are minted using the uint256 casting of the\n corresponding deposit contract's address. That is, the TDT's id is\n convertible to the deposit's address and vice versa. TDTs are minted\n automatically by the factory during each deposit's initialization. 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be minted", "implemented": true, "isConstructor": false, "kind": "function", "name": "mint", "scope": 6844, "stateMutability": "nonpayable", "superFunction": null, "visibility": "external" }, "children": [ { "children": [ { "attributes": { "constant": false, "name": "_to", "scope": 6798, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 6784, "name": "ElementaryTypeName", "src": "1739:7:22" } ], "id": 6785, "name": "VariableDeclaration", "src": "1739:11:22" }, { "attributes": { "constant": false, "name": "_tokenId", "scope": 6798, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 6786, "name": "ElementaryTypeName", "src": "1752:7:22" } ], "id": 6787, "name": 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@return bool whether the token exists.", "implemented": true, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "exists", "scope": 6844, "stateMutability": "view", "superFunction": null, "visibility": "external" }, "children": [ { "children": [ { "attributes": { "constant": false, "name": "_tokenId", "scope": 6810, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 6799, "name": "ElementaryTypeName", "src": "2029:7:22" } ], "id": 6800, "name": "VariableDeclaration", "src": "2029:16:22" } ], "id": 6801, "name": "ParameterList", "src": "2028:18:22" }, { "children": [ { "attributes": { "constant": false, "name": "", "scope": 6810, "stateVariable": false, "storageLocation": "default", "type": "bool", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "bool", "type": "bool" }, "id": 6802, 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], "id": 6807, "name": "FunctionCall", "src": "2093:17:22" } ], "id": 6808, "name": "Return", "src": "2086:24:22" } ], "id": 6809, "name": "Block", "src": "2076:41:22" } ], "id": 6810, "name": "FunctionDefinition", "src": "2013:104:22" }, { "attributes": { "documentation": "@notice Allow another address to spend on the caller's behalf.\n Set allowance for other address and notify.\n Allows `_spender` to transfer the specified TDT\n on your behalf and then ping the contract about it.\n @dev The `_spender` should implement the `ITokenRecipient`\n interface below to receive approval notifications.\n @param _spender `ITokenRecipient`-conforming contract authorized to\n operate on the approved token.\n @param _tdtId The TDT they can spend.\n @param _extraData Extra information to send to the approved contract.", "implemented": true, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "approveAndCall", "scope": 6844, "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, "children": [ { "children": [ { "attributes": { "constant": false, "name": "_spender", "scope": 6843, "stateVariable": false, "storageLocation": "default", "type": "contract ITokenRecipient", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "contractScope": null, "name": "ITokenRecipient", "referencedDeclaration": 5525, "type": "contract ITokenRecipient" }, "id": 6811, "name": "UserDefinedTypeName", "src": "2868:15:22" } ], "id": 6812, "name": "VariableDeclaration", "src": "2868:24:22" }, { "attributes": { "constant": false, "name": "_tdtId", "scope": 6843, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 6813, "name": "ElementaryTypeName", "src": "2902:7:22" } ], "id": 6814, "name": "VariableDeclaration", "src": "2902:14:22" }, { "attributes": { "constant": false, "name": "_extraData", "scope": 6843, "stateVariable": false, "storageLocation": "memory", "type": "bytes", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "bytes", "type": "bytes" }, "id": 6815, "name": "ElementaryTypeName", "src": "2926:5:22" } ], "id": 6816, "name": "VariableDeclaration", "src": "2926:23:22" } ], "id": 6817, "name": "ParameterList", "src": "2858:97:22" }, { "children": [ { "attributes": { "constant": false, "name": "", "scope": 6843, "stateVariable": false, "storageLocation": "default", "type": "bool", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "bool", "type": "bool" }, "id": 6818, "name": "ElementaryTypeName", "src": "2972:4:22" } ], "id": 6819, "name": "VariableDeclaration", "src": "2972:4:22" } ], "id": 6820, "name": "ParameterList", "src": "2971:6:22" }, { "children": [ { "children": [ { "attributes": { "argumentTypes": null, "isConstant": false, "isLValue": false, "isPure": false, "isStructConstructorCall": false, "lValueRequested": false, "names": [ null ], "type": "tuple()", "type_conversion": false }, "children": [ { "attributes": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "overloadedDeclarations": [ 17638 ], "referencedDeclaration": 17638, "type": "function (address,uint256)", "value": "approve" }, "id": 6821, "name": "Identifier", "src": "3045:7:22" }, { "attributes": { "argumentTypes": null, "isConstant": false, "isLValue": false, "isPure": false, "isStructConstructorCall": false, "lValueRequested": false, "names": [ null ], "type": "address", "type_conversion": true }, "children": [ { "attributes": { "argumentTypes": [ { "typeIdentifier": "t_contract$_ITokenRecipient_$5525", "typeString": "contract ITokenRecipient" } ], "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "type": "type(address)", "value": "address" }, "id": 6822, "name": "ElementaryTypeNameExpression", "src": "3053:7:22" }, { "attributes": { "argumentTypes": null, "overloadedDeclarations": [ null ], "referencedDeclaration": 6812, "type": "contract ITokenRecipient", "value": "_spender" }, "id": 6823, "name": "Identifier", "src": "3061:8:22" } ], "id": 6824, "name": "FunctionCall", "src": "3053:17:22" }, { "attributes": { "argumentTypes": null, "overloadedDeclarations": [ null ], "referencedDeclaration": 6814, "type": "uint256", "value": "_tdtId" }, "id": 6825, "name": "Identifier", "src": "3072:6:22" } ], "id": 6826, "name": "FunctionCall", "src": "3045:34:22" } ], "id": 6827, "name": "ExpressionStatement", "src": "3045:34:22" }, { "children": [ { "attributes": { "argumentTypes": null, "isConstant": false, "isLValue": false, "isPure": false, "isStructConstructorCall": false, "lValueRequested": false, "names": [ null ], "type": "tuple()", "type_conversion": false }, "children": [ { "attributes": { "argumentTypes": [ { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "member_name": "receiveApproval", "referencedDeclaration": 5524, "type": "function (address,uint256,address,bytes memory) external" }, "children": [ { "attributes": { "argumentTypes": null, "overloadedDeclarations": [ null ], "referencedDeclaration": 6812, "type": "contract ITokenRecipient", "value": "_spender" }, "id": 6828, "name": "Identifier", "src": "3089:8:22" } ], "id": 6830, "name": "MemberAccess", "src": "3089:24:22" }, { "attributes": { "argumentTypes": null, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "member_name": "sender", "referencedDeclaration": null, "type": "address payable" }, "children": [ { "attributes": { "argumentTypes": null, "overloadedDeclarations": [ null ], "referencedDeclaration": 18360, "type": "msg", "value": "msg" }, "id": 6831, "name": "Identifier", "src": "3114:3:22" } ], "id": 6832, "name": "MemberAccess", "src": "3114:10:22" }, { "attributes": { "argumentTypes": null, "overloadedDeclarations": [ null ], "referencedDeclaration": 6814, "type": "uint256", "value": "_tdtId" }, "id": 6833, "name": "Identifier", "src": "3126:6:22" }, { "attributes": { "argumentTypes": null, "isConstant": false, "isLValue": false, "isPure": false, "isStructConstructorCall": false, "lValueRequested": false, "names": [ null ], "type": "address", "type_conversion": true }, "children": [ { "attributes": { "argumentTypes": [ { "typeIdentifier": "t_contract$_TBTCDepositToken_$6844", "typeString": "contract TBTCDepositToken" } ], "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "type": "type(address)", "value": "address" }, "id": 6834, "name": "ElementaryTypeNameExpression", "src": "3134:7:22" }, { "attributes": { "argumentTypes": null, "overloadedDeclarations": [ null ], "referencedDeclaration": 18398, "type": "contract TBTCDepositToken", "value": "this" }, "id": 6835, "name": "Identifier", "src": "3142:4:22" } ], "id": 6836, "name": "FunctionCall", "src": "3134:13:22" }, { "attributes": { "argumentTypes": null, "overloadedDeclarations": [ null ], "referencedDeclaration": 6816, "type": "bytes memory", "value": "_extraData" }, "id": 6837, "name": "Identifier", "src": "3149:10:22" } ], "id": 6838, "name": "FunctionCall", "src": "3089:71:22" } ], "id": 6839, "name": "ExpressionStatement", "src": "3089:71:22" }, { "attributes": { "functionReturnParameters": 6820 }, "children": [ { "attributes": { "argumentTypes": null, "hexvalue": "74727565", "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "subdenomination": null, "token": "bool", "type": "bool", "value": "true" }, "id": 6840, "name": "Literal", "src": "3177:4:22" } ], "id": 6841, "name": "Return", "src": "3170:11:22" } ], "id": 6842, "name": "Block", "src": "2978:210:22" } ], "id": 6843, "name": "FunctionDefinition", "src": "2835:353:22" } ], "id": 6844, "name": "ContractDefinition", "src": "1269:1921:22" } ], "id": 6845, "name": "SourceUnit", "src": "0:3191:22" }, "compiler": { "name": "solc", "version": "0.5.17+commit.d19bba13.Emscripten.clang" }, "networks": { "3": { "events": {}, "links": {}, "address": "0x830f3600Cd81BeD1507b4ed66fd958C49663F2A1", "transactionHash": "0xceed5fea1aae6a2e0644a68fa18c66cd052a463152a294a70d45769ada8e4425" } }, "schemaVersion": "3.3.4", "updatedAt": "2021-11-23T12:02:26.795Z", "networkType": "ethereum", "devdoc": { "details": "Currently, TDTs are minted using the uint256 casting of the corresponding deposit contract's address. That is, the TDT's id is convertible to the deposit's address and vice versa. TDTs are minted automatically by the factory during each deposit's initialization. See DepositFactory.createNewDeposit() for more info on how the TDT is minted.", "methods": { "approve(address,uint256)": { "details": "Approves another address to transfer the given token ID The zero address indicates there is no approved address. There can only be one approved address per token at a given time. Can only be called by the token owner or an approved operator.", "params": { "to": "address to be approved for the given token ID", "tokenId": "uint256 ID of the token to be approved" } }, "approveAndCall(address,uint256,bytes)": { "details": "The `_spender` should implement the `ITokenRecipient` interface below to receive approval notifications.", "params": { "_extraData": "Extra information to send to the approved contract.", "_spender": "`ITokenRecipient`-conforming contract authorized to operate on the approved token.", "_tdtId": "The TDT they can spend." } }, "balanceOf(address)": { "details": "Gets the balance of the specified address.", "params": { "owner": "address to query the balance of" }, "return": "uint256 representing the amount owned by the passed address" }, "exists(uint256)": { "details": "Returns whether the specified token exists.", "params": { "_tokenId": "uint256 ID of the token to query the existence of." }, "return": "bool whether the token exists." }, "getApproved(uint256)": { "details": "Gets the approved address for a token ID, or zero if no address set Reverts if the token ID does not exist.", "params": { "tokenId": "uint256 ID of the token to query the approval of" }, "return": "address currently approved for the given token ID" }, "initialize(address)": { "details": "Since this function is not access-controlled, it should be called transactionally with contract instantiation. In cases where a regular contract directly inherits from DepositFactoryAuthority, that should happen in the constructor. In cases where the inheritor is binstead used via a clone factory, the same function that creates a new clone should also trigger initialization." }, "isApprovedForAll(address,address)": { "details": "Tells whether an operator is approved by a given owner.", "params": { "operator": "operator address which you want to query the approval of", "owner": "owner address which you want to query the approval of" }, "return": "bool whether the given operator is approved by the given owner" }, "mint(address,uint256)": { "details": "Mints a new token. Reverts if the given token ID already exists.", "params": { "_to": "The address that will own the minted token", "_tokenId": "uint256 ID of the token to be minted" } }, "name()": { "details": "Gets the token name.", "return": "string representing the token name" }, "ownerOf(uint256)": { "details": "Gets the owner of the specified token ID.", "params": { "tokenId": "uint256 ID of the token to query the owner of" }, "return": "address currently marked as the owner of the given token ID" }, "safeTransferFrom(address,address,uint256)": { "details": "Safely transfers the ownership of a given token ID to another address If the target address is a contract, it must implement `onERC721Received`, which is called upon a safe transfer, and return the magic value `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise, the transfer is reverted. Requires the msg.sender to be the owner, approved, or operator", "params": { "from": "current owner of the token", "to": "address to receive the ownership of the given token ID", "tokenId": "uint256 ID of the token to be transferred" } }, "safeTransferFrom(address,address,uint256,bytes)": { "details": "Safely transfers the ownership of a given token ID to another address If the target address is a contract, it must implement `onERC721Received`, which is called upon a safe transfer, and return the magic value `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise, the transfer is reverted. Requires the msg.sender to be the owner, approved, or operator", "params": { "_data": "bytes data to send along with a safe transfer check", "from": "current owner of the token", "to": "address to receive the ownership of the given token ID", "tokenId": "uint256 ID of the token to be transferred" } }, "setApprovalForAll(address,bool)": { "details": "Sets or unsets the approval of a given operator An operator is allowed to transfer all tokens of the sender on their behalf.", "params": { "approved": "representing the status of the approval to be set", "to": "operator address to set the approval" } }, "supportsInterface(bytes4)": { "details": "See `IERC165.supportsInterface`. * Time complexity O(1), guaranteed to always use less than 30 000 gas." }, "symbol()": { "details": "Gets the token symbol.", "return": "string representing the token symbol" }, "tokenURI(uint256)": { "details": "Returns an URI for a given token ID. Throws if the token ID does not exist. May return an empty string.", "params": { "tokenId": "uint256 ID of the token to query" } }, "transferFrom(address,address,uint256)": { "details": "Transfers the ownership of a given token ID to another address. Usage of this method is discouraged, use `safeTransferFrom` whenever possible. Requires the msg.sender to be the owner, approved, or operator.", "params": { "from": "current owner of the token", "to": "address to receive the ownership of the given token ID", "tokenId": "uint256 ID of the token to be transferred" } } }, "title": "tBTC Deposit Token for tracking deposit ownership" }, "userdoc": { "methods": { "approveAndCall(address,uint256,bytes)": { "notice": "Allow another address to spend on the caller's behalf. Set allowance for other address and notify. Allows `_spender` to transfer the specified TDT on your behalf and then ping the contract about it." }, "initialize(address)": { "notice": "Set the address of the System contract on contract initialization." } }, "notice": "The tBTC Deposit Token, commonly referenced as the TDT, is an ERC721 non-fungible token whose ownership reflects the ownership of its corresponding deposit. Each deposit has one TDT, and vice versa. Owning a TDT is equivalent to owning its corresponding deposit. TDTs can be transferred freely. tBTC's VendingMachine contract takes ownership of TDTs and in exchange returns fungible TBTC tokens whose value is backed 1-to-1 by the corresponding deposit's BTC." } }