{ "contractName": "ERC721BasicToken", "abi": [ { "constant": true, "inputs": [ { "name": "_interfaceId", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": true, "inputs": [], "name": "InterfaceId_ERC165", "outputs": [ { "name": "", "type": "bytes4" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "inputs": [], "payable": false, "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_from", "type": "address" }, { "indexed": true, "name": "_to", "type": "address" }, { "indexed": true, "name": "_tokenId", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "name": "_owner", "type": "address" }, { "indexed": true, "name": "_approved", "type": "address" }, { "indexed": true, "name": "_tokenId", "type": "uint256" } 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"address" }, { "name": "_tokenId", "type": "uint256" } ], "name": "approve", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "name": "_tokenId", "type": "uint256" } ], "name": "getApproved", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_to", "type": "address" }, { "name": "_approved", "type": "bool" } ], "name": "setApprovalForAll", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function" }, { "constant": true, "inputs": [ { "name": "_owner", "type": "address" }, { "name": "_operator", "type": "address" } ], "name": "isApprovedForAll", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function" }, { "constant": false, "inputs": [ { "name": "_from", "type": "address" }, { "name": "_to", "type": "address" }, { "name": 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"source": "pragma solidity ^0.4.24;\n\nimport \"./ERC721Basic.sol\";\nimport \"./ERC721Receiver.sol\";\nimport \"../../math/SafeMath.sol\";\nimport \"../../AddressUtils.sol\";\nimport \"../../introspection/SupportsInterfaceWithLookup.sol\";\n\n\n/**\n * @title ERC721 Non-Fungible Token Standard basic implementation\n * @dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md\n */\ncontract ERC721BasicToken is SupportsInterfaceWithLookup, ERC721Basic {\n\n using SafeMath for uint256;\n using AddressUtils for address;\n\n // Equals to `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`\n // which can be also obtained as `ERC721Receiver(0).onERC721Received.selector`\n bytes4 private constant ERC721_RECEIVED = 0x150b7a02;\n\n // Mapping from token ID to owner\n mapping (uint256 => address) internal tokenOwner;\n\n // Mapping from token ID to approved address\n mapping (uint256 => address) internal tokenApprovals;\n\n // Mapping from owner to number of owned token\n mapping (address => uint256) internal ownedTokensCount;\n\n // Mapping from owner to operator approvals\n mapping (address => mapping (address => bool)) internal operatorApprovals;\n\n constructor()\n public\n {\n // register the supported interfaces to conform to ERC721 via ERC165\n _registerInterface(InterfaceId_ERC721);\n _registerInterface(InterfaceId_ERC721Exists);\n }\n\n /**\n * @dev Gets the balance of the specified address\n * @param _owner address to query the balance of\n * @return uint256 representing the amount owned by the passed address\n */\n function balanceOf(address _owner) public view returns (uint256) {\n require(_owner != address(0));\n return ownedTokensCount[_owner];\n }\n\n /**\n * @dev Gets the owner of the specified token ID\n * @param _tokenId uint256 ID of the token to query the owner of\n * @return owner address currently marked as the owner of the given token ID\n */\n function ownerOf(uint256 _tokenId) public view returns (address) {\n address owner = tokenOwner[_tokenId];\n require(owner != address(0));\n return owner;\n }\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 whether the token exists\n */\n function exists(uint256 _tokenId) public view returns (bool) {\n address owner = tokenOwner[_tokenId];\n return owner != address(0);\n }\n\n /**\n * @dev Approves another address to transfer the given token ID\n * The zero address indicates there is no approved address.\n * There can only be one approved address per token at a given time.\n * Can only be called by the token owner or an approved operator.\n * @param _to address to be approved for the given token ID\n * @param _tokenId uint256 ID of the token to be approved\n */\n function approve(address _to, uint256 _tokenId) public {\n address owner = ownerOf(_tokenId);\n require(_to != owner);\n require(msg.sender == owner || isApprovedForAll(owner, msg.sender));\n\n tokenApprovals[_tokenId] = _to;\n emit Approval(owner, _to, _tokenId);\n }\n\n /**\n * @dev Gets the approved address for a token ID, or zero if no address set\n * @param _tokenId uint256 ID of the token to query the approval of\n * @return address currently approved for the given token ID\n */\n function getApproved(uint256 _tokenId) public view returns (address) {\n return tokenApprovals[_tokenId];\n }\n\n /**\n * @dev Sets or unsets the approval of a given operator\n * An operator is allowed to transfer all tokens of the sender on their behalf\n * @param _to operator address to set the approval\n * @param _approved representing the status of the approval to be set\n */\n function setApprovalForAll(address _to, bool _approved) public {\n require(_to != msg.sender);\n operatorApprovals[msg.sender][_to] = _approved;\n emit ApprovalForAll(msg.sender, _to, _approved);\n }\n\n /**\n * @dev Tells whether an operator is approved by a given owner\n * @param _owner owner address which you want to query the approval of\n * @param _operator operator address which you want to query the approval of\n * @return bool whether the given operator is approved by the given owner\n */\n function isApprovedForAll(\n address _owner,\n address _operator\n )\n public\n view\n returns (bool)\n {\n return operatorApprovals[_owner][_operator];\n }\n\n /**\n * @dev Transfers the ownership of a given token ID to another address\n * Usage of this method is discouraged, use `safeTransferFrom` whenever possible\n * Requires the msg sender to be the owner, approved, or operator\n * @param _from current owner of the token\n * @param _to address to receive the ownership of the given token ID\n * @param _tokenId uint256 ID of the token to be transferred\n */\n function transferFrom(\n address _from,\n address _to,\n uint256 _tokenId\n )\n public\n {\n require(isApprovedOrOwner(msg.sender, _tokenId));\n require(_from != address(0));\n require(_to != address(0));\n\n clearApproval(_from, _tokenId);\n removeTokenFrom(_from, _tokenId);\n addTokenTo(_to, _tokenId);\n\n emit Transfer(_from, _to, _tokenId);\n }\n\n /**\n * @dev Safely transfers the ownership of a given token ID to another address\n * If the target address is a contract, it must implement `onERC721Received`,\n * which is called upon a safe transfer, and return the magic value\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n * the transfer is reverted.\n *\n * Requires the msg sender to be the owner, approved, or operator\n * @param _from current owner of the token\n * @param _to address to receive the ownership of the given token ID\n * @param _tokenId uint256 ID of the token to be transferred\n */\n function safeTransferFrom(\n address _from,\n address _to,\n uint256 _tokenId\n )\n public\n {\n // solium-disable-next-line arg-overflow\n safeTransferFrom(_from, _to, _tokenId, \"\");\n }\n\n /**\n * @dev Safely transfers the ownership of a given token ID to another address\n * If the target address is a contract, it must implement `onERC721Received`,\n * which is called upon a safe transfer, and return the magic value\n * `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\n * the transfer is reverted.\n * Requires the msg sender to be the owner, approved, or operator\n * @param _from current owner of the token\n * @param _to address to receive the ownership of the given token ID\n * @param _tokenId uint256 ID of the token to be transferred\n * @param _data bytes data to send along with a safe transfer check\n */\n function safeTransferFrom(\n address _from,\n address _to,\n uint256 _tokenId,\n bytes _data\n )\n public\n {\n transferFrom(_from, _to, _tokenId);\n // solium-disable-next-line arg-overflow\n require(checkAndCallSafeTransfer(_from, _to, _tokenId, _data));\n }\n\n /**\n * @dev Returns whether the given spender can transfer a given token ID\n * @param _spender address of the spender to query\n * @param _tokenId uint256 ID of the token to be transferred\n * @return bool whether the msg.sender is approved for the given token ID,\n * is an operator of the owner, or is the owner of the token\n */\n function isApprovedOrOwner(\n address _spender,\n uint256 _tokenId\n )\n internal\n view\n returns (bool)\n {\n address owner = ownerOf(_tokenId);\n // Disable solium check because of\n // https://github.com/duaraghav8/Solium/issues/175\n // solium-disable-next-line operator-whitespace\n return (\n _spender == owner ||\n getApproved(_tokenId) == _spender ||\n isApprovedForAll(owner, _spender)\n );\n }\n\n /**\n * @dev Internal function to mint 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 by the msg.sender\n */\n function _mint(address _to, uint256 _tokenId) internal {\n require(_to != address(0));\n addTokenTo(_to, _tokenId);\n emit Transfer(address(0), _to, _tokenId);\n }\n\n /**\n * @dev Internal function to burn a specific token\n * Reverts if the token does not exist\n * @param _tokenId uint256 ID of the token being burned by the msg.sender\n */\n function _burn(address _owner, uint256 _tokenId) internal {\n clearApproval(_owner, _tokenId);\n removeTokenFrom(_owner, _tokenId);\n emit Transfer(_owner, address(0), _tokenId);\n }\n\n /**\n * @dev Internal function to clear current approval of a given token ID\n * Reverts if the given address is not indeed the owner of the token\n * @param _owner owner of the token\n * @param _tokenId uint256 ID of the token to be transferred\n */\n function clearApproval(address _owner, uint256 _tokenId) internal {\n require(ownerOf(_tokenId) == _owner);\n if (tokenApprovals[_tokenId] != address(0)) {\n tokenApprovals[_tokenId] = address(0);\n }\n }\n\n /**\n * @dev Internal function to add a token ID to the list of a given address\n * @param _to address representing the new owner of the given token ID\n * @param _tokenId uint256 ID of the token to be added to the tokens list of the given address\n */\n function addTokenTo(address _to, uint256 _tokenId) internal {\n require(tokenOwner[_tokenId] == address(0));\n tokenOwner[_tokenId] = _to;\n ownedTokensCount[_to] = ownedTokensCount[_to].add(1);\n }\n\n /**\n * @dev Internal function to remove a token ID from the list of a given address\n * @param _from address representing the previous owner of the given token ID\n * @param _tokenId uint256 ID of the token to be removed from the tokens list of the given address\n */\n function removeTokenFrom(address _from, uint256 _tokenId) internal {\n require(ownerOf(_tokenId) == _from);\n ownedTokensCount[_from] = ownedTokensCount[_from].sub(1);\n tokenOwner[_tokenId] = address(0);\n }\n\n /**\n * @dev Internal function to invoke `onERC721Received` on a target address\n * The call is not executed if the target address is not a contract\n * @param _from address representing the previous owner of the given token ID\n * @param _to target address that will receive the tokens\n * @param _tokenId uint256 ID of the token to be transferred\n * @param _data bytes optional data to send along with the call\n * @return whether the call correctly returned the expected magic value\n */\n function checkAndCallSafeTransfer(\n address _from,\n address _to,\n uint256 _tokenId,\n bytes _data\n )\n internal\n returns (bool)\n {\n if (!_to.isContract()) {\n return true;\n }\n bytes4 retval = ERC721Receiver(_to).onERC721Received(\n msg.sender, _from, _tokenId, _data);\n return (retval == ERC721_RECEIVED);\n }\n}\n", "sourcePath": "zeppelin-solidity/contracts/token/ERC721/ERC721BasicToken.sol", "ast": { "absolutePath": "zeppelin-solidity/contracts/token/ERC721/ERC721BasicToken.sol", "exportedSymbols": { "ERC721BasicToken": [ 6166 ] }, "id": 6167, "nodeType": "SourceUnit", "nodes": [ { "id": 5620, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:24:31" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC721/ERC721Basic.sol", "file": "./ERC721Basic.sol", "id": 5621, "nodeType": "ImportDirective", "scope": 6167, "sourceUnit": 5619, "src": "26:27:31", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC721/ERC721Receiver.sol", "file": "./ERC721Receiver.sol", "id": 5622, "nodeType": "ImportDirective", "scope": 6167, "sourceUnit": 6186, "src": "54:30:31", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/math/SafeMath.sol", "file": "../../math/SafeMath.sol", "id": 5623, "nodeType": "ImportDirective", "scope": 6167, "sourceUnit": 4799, "src": "85:33:31", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/AddressUtils.sol", "file": "../../AddressUtils.sol", "id": 5624, "nodeType": "ImportDirective", "scope": 6167, "sourceUnit": 4644, "src": "119:32:31", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/introspection/SupportsInterfaceWithLookup.sol", "file": "../../introspection/SupportsInterfaceWithLookup.sol", "id": 5625, "nodeType": "ImportDirective", "scope": 6167, "sourceUnit": 4705, "src": "152:61:31", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 5626, "name": "SupportsInterfaceWithLookup", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4704, "src": "392:27:31", "typeDescriptions": { "typeIdentifier": "t_contract$_SupportsInterfaceWithLookup_$4704", "typeString": "contract SupportsInterfaceWithLookup" } }, "id": 5627, "nodeType": "InheritanceSpecifier", "src": "392:27:31" }, { "arguments": null, "baseName": { "contractScope": null, "id": 5628, "name": "ERC721Basic", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5618, "src": "421:11:31", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC721Basic_$5618", "typeString": "contract ERC721Basic" } }, "id": 5629, "nodeType": "InheritanceSpecifier", "src": "421:11:31" } ], "contractDependencies": [ 4653, 4704, 5618 ], "contractKind": "contract", "documentation": "@title ERC721 Non-Fungible Token Standard basic implementation\n@dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md", "fullyImplemented": true, "id": 6166, "linearizedBaseContracts": [ 6166, 5618, 4704, 4653 ], "name": "ERC721BasicToken", "nodeType": "ContractDefinition", "nodes": [ { "id": 5632, "libraryName": { "contractScope": null, "id": 5630, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4798, "src": "444:8:31", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$4798", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "438:27:31", "typeName": { "id": 5631, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "457:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "id": 5635, "libraryName": { "contractScope": null, "id": 5633, "name": "AddressUtils", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4643, "src": "474:12:31", "typeDescriptions": { "typeIdentifier": "t_contract$_AddressUtils_$4643", "typeString": "library AddressUtils" } }, "nodeType": "UsingForDirective", "src": "468:31:31", "typeName": { "id": 5634, "name": "address", "nodeType": "ElementaryTypeName", "src": "491:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, { "constant": true, "id": 5638, "name": "ERC721_RECEIVED", "nodeType": "VariableDeclaration", "scope": 6166, "src": "670:52:31", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 5636, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "670:6:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": { "argumentTypes": null, "hexValue": "30783135306237613032", "id": 5637, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "712:10:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_353073666_by_1", "typeString": "int_const 353073666" }, "value": "0x150b7a02" }, "visibility": "private" }, { "constant": false, "id": 5642, "name": "tokenOwner", "nodeType": "VariableDeclaration", "scope": 6166, "src": "763:48:31", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" }, "typeName": { "id": 5641, "keyType": { "id": 5639, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "772:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Mapping", "src": "763:28:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", 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"view", "superFunction": 5558, "visibility": "public" }, { "body": { "id": 5776, "nodeType": "Block", "src": "2840:222:31", "statements": [ { "assignments": [ 5740 ], "declarations": [ { "constant": false, "id": 5740, "name": "owner", "nodeType": "VariableDeclaration", "scope": 5777, "src": "2846:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5739, "name": "address", "nodeType": "ElementaryTypeName", "src": "2846:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 5744, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5742, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5736, "src": "2870:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5741, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [ 5712 ], "referencedDeclaration": 5712, "src": "2862:7:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 5743, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2862:17:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "2846:33:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5748, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5746, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5734, "src": "2893:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 5747, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5740, "src": "2900:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "2893:12:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5745, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "2885:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5749, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2885:21:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5750, "nodeType": "ExpressionStatement", "src": "2885:21:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 5761, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5755, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5752, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "2920:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5753, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2920:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 5754, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5740, "src": "2934:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "2920:19:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5757, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5740, "src": "2960:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5758, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "2967:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5759, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2967:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5756, "name": "isApprovedForAll", "nodeType": "Identifier", "overloadedDeclarations": [ 5836 ], "referencedDeclaration": 5836, "src": "2943:16:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_address_$returns$_t_bool_$", "typeString": "function (address,address) view returns (bool)" } }, "id": 5760, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2943:35:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "2920:58:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5751, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "2912:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5762, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2912:67:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5763, "nodeType": "ExpressionStatement", "src": "2912:67:31" }, { "expression": { "argumentTypes": null, "id": 5768, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5764, "name": "tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5646, "src": "2986:14:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 5766, "indexExpression": { "argumentTypes": null, "id": 5765, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5736, "src": "3001:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "2986:24:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 5767, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5734, "src": "3013:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "2986:30:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 5769, "nodeType": "ExpressionStatement", "src": "2986:30:31" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5771, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5740, "src": "3036:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5772, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5734, "src": "3043:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5773, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5736, "src": "3048:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5770, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5529, "src": "3027:8:31", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 5774, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3027:30:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5775, "nodeType": "EmitStatement", "src": "3022:35:31" } ] }, "documentation": "@dev Approves another address to transfer the given token ID\nThe zero address indicates there is no approved address.\nThere can only be one approved address per token at a given time.\nCan only be called by the token owner or an approved operator.\n@param _to address to be approved for the given token ID\n@param _tokenId uint256 ID of the token to be approved", "id": 5777, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 5737, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5734, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5777, "src": "2802:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5733, "name": "address", "nodeType": "ElementaryTypeName", "src": "2802:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5736, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5777, "src": "2815:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5735, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2815:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2801:31:31" }, "payable": false, "returnParameters": { "id": 5738, "nodeType": "ParameterList", "parameters": [], "src": "2840:0:31" }, "scope": 6166, "src": "2785:277:31", "stateMutability": "nonpayable", "superFunction": 5565, "visibility": "public" }, { "body": { "id": 5788, "nodeType": "Block", "src": "3358:42:31", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5784, "name": "tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5646, "src": "3371:14:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 5786, "indexExpression": { "argumentTypes": null, "id": 5785, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5779, "src": "3386:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3371:24:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 5783, "id": 5787, "nodeType": "Return", "src": "3364:31:31" } ] }, "documentation": "@dev Gets the approved address for a token ID, or zero if no address set\n@param _tokenId uint256 ID of the token to query the approval of\n@return address currently approved for the given token ID", "id": 5789, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "getApproved", "nodeType": "FunctionDefinition", "parameters": { "id": 5780, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5779, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5789, "src": "3310:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5778, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3310:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3309:18:31" }, "payable": false, "returnParameters": { "id": 5783, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5782, "name": "", "nodeType": "VariableDeclaration", "scope": 5789, "src": "3349:7:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5781, "name": "address", "nodeType": "ElementaryTypeName", "src": "3349:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "3348:9:31" }, "scope": 6166, "src": "3289:111:31", "stateMutability": "view", "superFunction": 5572, "visibility": "public" }, { "body": { "id": 5819, "nodeType": "Block", "src": "3743:142:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5800, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5797, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5791, "src": "3757:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5798, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "3764:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5799, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3764:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "3757:17:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5796, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "3749:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5801, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3749:26:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5802, "nodeType": "ExpressionStatement", "src": "3749:26:31" }, { "expression": { "argumentTypes": null, "id": 5810, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5803, "name": "operatorApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5656, "src": "3781:17:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_bool_$_$", "typeString": "mapping(address => mapping(address => bool))" } }, "id": 5807, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5804, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "3799:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5805, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3799:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3781:29:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_bool_$", "typeString": "mapping(address => bool)" } }, "id": 5808, "indexExpression": { "argumentTypes": null, "id": 5806, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5791, "src": "3811:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3781:34:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 5809, "name": "_approved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5793, "src": "3818:9:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "3781:46:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 5811, "nodeType": "ExpressionStatement", "src": "3781:46:31" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5813, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "3853:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5814, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3853:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5815, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5791, "src": "3865:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5816, "name": "_approved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5793, "src": "3870:9:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5812, "name": "ApprovalForAll", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5537, "src": "3838:14:31", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_bool_$returns$__$", "typeString": "function (address,address,bool)" } }, "id": 5817, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3838:42:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5818, "nodeType": "EmitStatement", "src": "3833:47:31" } ] }, "documentation": "@dev Sets or unsets the approval of a given operator\nAn operator is allowed to transfer all tokens of the sender on their behalf\n@param _to operator address to set the approval\n@param _approved representing the status of the approval to be set", "id": 5820, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "setApprovalForAll", "nodeType": "FunctionDefinition", "parameters": { "id": 5794, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5791, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5820, "src": "3707:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5790, "name": "address", "nodeType": "ElementaryTypeName", "src": "3707:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5793, "name": "_approved", "nodeType": "VariableDeclaration", "scope": 5820, "src": "3720:14:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 5792, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3720:4:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3706:29:31" }, "payable": false, "returnParameters": { "id": 5795, "nodeType": "ParameterList", "parameters": [], "src": "3743:0:31" }, "scope": 6166, "src": "3680:205:31", "stateMutability": "nonpayable", "superFunction": 5579, "visibility": "public" }, { "body": { "id": 5835, "nodeType": "Block", "src": "4308:54:31", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5829, "name": "operatorApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5656, "src": "4321:17:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_bool_$_$", "typeString": "mapping(address => mapping(address => bool))" } }, "id": 5831, "indexExpression": { "argumentTypes": null, "id": 5830, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5822, "src": "4339:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4321:25:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_bool_$", "typeString": "mapping(address => bool)" } }, "id": 5833, "indexExpression": { "argumentTypes": null, "id": 5832, "name": "_operator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5824, "src": "4347:9:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4321:36:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 5828, "id": 5834, "nodeType": "Return", "src": "4314:43:31" } ] }, "documentation": "@dev Tells whether an operator is approved by a given owner\n@param _owner owner address which you want to query the approval of\n@param _operator operator address which you want to query the approval of\n@return bool whether the given operator is approved by the given owner", "id": 5836, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "isApprovedForAll", "nodeType": "FunctionDefinition", "parameters": { "id": 5825, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5822, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 5836, "src": "4225:14:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5821, "name": "address", "nodeType": "ElementaryTypeName", "src": "4225:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5824, "name": "_operator", "nodeType": "VariableDeclaration", "scope": 5836, "src": "4245:17:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5823, "name": "address", "nodeType": "ElementaryTypeName", "src": "4245:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "4219:47:31" }, "payable": false, "returnParameters": { "id": 5828, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5827, "name": "", "nodeType": "VariableDeclaration", "scope": 5836, "src": "4300:4:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 5826, "name": "bool", "nodeType": "ElementaryTypeName", "src": "4300:4:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "4299:6:31" }, "scope": 6166, "src": "4194:168:31", "stateMutability": "view", "superFunction": 5588, "visibility": "public" }, { "body": { "id": 5890, "nodeType": "Block", "src": "4877:273:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5847, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "4909:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5848, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4909:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5849, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5842, "src": "4921:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5846, "name": "isApprovedOrOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5967, "src": "4891:17:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) view returns (bool)" } }, "id": 5850, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4891:39:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5845, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "4883:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5851, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4883:48:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5852, "nodeType": "ExpressionStatement", "src": "4883:48:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5858, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5854, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5838, "src": "4945:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5856, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4962:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5855, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4954:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5857, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4954:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "4945:19:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5853, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "4937:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5859, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4937:28:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5860, "nodeType": "ExpressionStatement", "src": "4937:28:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5866, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5862, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5840, "src": "4979:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5864, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4994:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5863, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4986:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5865, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4986:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "4979:17:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5861, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "4971:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5867, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4971:26:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5868, "nodeType": "ExpressionStatement", "src": "4971:26:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5870, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5838, "src": "5018:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5871, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5842, "src": "5025:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5869, "name": "clearApproval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6055, "src": "5004:13:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 5872, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5004:30:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5873, "nodeType": "ExpressionStatement", "src": "5004:30:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5875, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5838, "src": "5056:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5876, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5842, "src": "5063:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5874, "name": "removeTokenFrom", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6125, "src": "5040:15:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 5877, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5040:32:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5878, "nodeType": "ExpressionStatement", "src": "5040:32:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5880, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5840, "src": "5089:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5881, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5842, "src": "5094:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5879, "name": "addTokenTo", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6090, "src": "5078:10:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 5882, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5078:25:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5883, "nodeType": "ExpressionStatement", "src": "5078:25:31" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5885, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5838, "src": "5124:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5886, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5840, "src": "5131:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5887, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5842, "src": "5136:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5884, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5521, "src": "5115:8:31", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 5888, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5115:30:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5889, "nodeType": "EmitStatement", "src": "5110:35:31" } ] }, "documentation": "@dev Transfers the ownership of a given token ID to another address\nUsage of this method is discouraged, use `safeTransferFrom` whenever possible\nRequires the msg sender to be the owner, approved, or operator\n@param _from current owner of the token\n@param _to address to receive the ownership of the given token ID\n@param _tokenId uint256 ID of the token to be transferred", "id": 5891, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 5843, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5838, "name": "_from", "nodeType": "VariableDeclaration", "scope": 5891, "src": "4807:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5837, "name": "address", "nodeType": "ElementaryTypeName", "src": "4807:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5840, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5891, "src": "4826:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5839, "name": "address", "nodeType": "ElementaryTypeName", "src": "4826:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5842, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5891, "src": "4843:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5841, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4843:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "4801:62:31" }, "payable": false, "returnParameters": { "id": 5844, "nodeType": "ParameterList", "parameters": [], "src": "4877:0:31" }, "scope": 6166, "src": "4780:370:31", "stateMutability": "nonpayable", "superFunction": 5597, "visibility": "public" }, { "body": { "id": 5907, "nodeType": "Block", "src": "5867:98:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5901, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5893, "src": "5935:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5902, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5895, "src": "5942:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5903, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5897, "src": "5947:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "", "id": 5904, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5957:2:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" }, "value": "" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" } ], "id": 5900, "name": "safeTransferFrom", "nodeType": "Identifier", "overloadedDeclarations": [ 5908, 5935 ], "referencedDeclaration": 5935, "src": "5918:16:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (address,address,uint256,bytes memory)" } }, "id": 5905, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5918:42:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5906, "nodeType": "ExpressionStatement", "src": "5918:42:31" } ] }, "documentation": "@dev Safely transfers the ownership of a given token ID to another address\nIf the target address is a contract, it must implement `onERC721Received`,\nwhich is called upon a safe transfer, and return the magic value\n`bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\nthe transfer is reverted.\n * Requires the msg sender to be the owner, approved, or operator\n@param _from current owner of the token\n@param _to address to receive the ownership of the given token ID\n@param _tokenId uint256 ID of the token to be transferred", "id": 5908, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "safeTransferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 5898, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5893, "name": "_from", "nodeType": "VariableDeclaration", "scope": 5908, "src": "5797:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5892, "name": "address", "nodeType": "ElementaryTypeName", "src": "5797:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5895, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5908, "src": "5816:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5894, "name": "address", "nodeType": "ElementaryTypeName", "src": "5816:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5897, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5908, "src": "5833:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5896, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5833:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "5791:62:31" }, "payable": false, "returnParameters": { "id": 5899, "nodeType": "ParameterList", "parameters": [], "src": "5867:0:31" }, "scope": 6166, "src": "5766:199:31", "stateMutability": "nonpayable", "superFunction": 5606, "visibility": "public" }, { "body": { "id": 5934, "nodeType": "Block", "src": "6765:158:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5920, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5910, "src": "6784:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5921, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5912, "src": "6791:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5922, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5914, "src": "6796:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5919, "name": "transferFrom", "nodeType": "Identifier", "overloadedDeclarations": [ 5891 ], "referencedDeclaration": 5891, "src": "6771:12:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 5923, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6771:34:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5924, "nodeType": "ExpressionStatement", "src": "6771:34:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5927, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5910, "src": "6889:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5928, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5912, "src": "6896:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5929, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5914, "src": "6901:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 5930, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5916, "src": "6911:5:31", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 5926, "name": "checkAndCallSafeTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6165, "src": "6864:24:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bool_$", "typeString": "function (address,address,uint256,bytes memory) returns (bool)" } }, "id": 5931, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6864:53:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5925, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "6856:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5932, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6856:62:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5933, "nodeType": "ExpressionStatement", "src": "6856:62:31" } ] }, "documentation": "@dev Safely transfers the ownership of a given token ID to another address\nIf the target address is a contract, it must implement `onERC721Received`,\nwhich is called upon a safe transfer, and return the magic value\n`bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\nthe transfer is reverted.\nRequires the msg sender to be the owner, approved, or operator\n@param _from current owner of the token\n@param _to address to receive the ownership of the given token ID\n@param _tokenId uint256 ID of the token to be transferred\n@param _data bytes data to send along with a safe transfer check", "id": 5935, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "safeTransferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 5917, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5910, "name": "_from", "nodeType": "VariableDeclaration", "scope": 5935, "src": "6678:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5909, "name": "address", "nodeType": "ElementaryTypeName", "src": "6678:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5912, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5935, "src": "6697:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5911, "name": "address", "nodeType": "ElementaryTypeName", "src": "6697:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5914, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5935, "src": "6714:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5913, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6714:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5916, "name": "_data", "nodeType": "VariableDeclaration", "scope": 5935, "src": "6736:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 5915, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6736:5:31", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "6672:79:31" }, "payable": false, "returnParameters": { "id": 5918, "nodeType": "ParameterList", "parameters": [], "src": "6765:0:31" }, "scope": 6166, "src": "6647:276:31", "stateMutability": "nonpayable", "superFunction": 5617, "visibility": "public" }, { "body": { "id": 5966, "nodeType": "Block", "src": "7388:320:31", "statements": [ { "assignments": [ 5945 ], "declarations": [ { "constant": false, "id": 5945, "name": "owner", "nodeType": "VariableDeclaration", "scope": 5967, "src": "7394:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5944, "name": "address", "nodeType": "ElementaryTypeName", "src": "7394:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 5949, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5947, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5939, "src": "7418:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5946, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [ 5712 ], "referencedDeclaration": 5712, "src": "7410:7:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 5948, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7410:17:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "7394:33:31" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 5963, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 5958, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5952, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5950, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5937, "src": "7594:8:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 5951, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5945, "src": "7606:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "7594:17:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5957, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5954, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5939, "src": "7633:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5953, "name": "getApproved", "nodeType": "Identifier", "overloadedDeclarations": [ 5789 ], "referencedDeclaration": 5789, "src": "7621:11:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 5955, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7621:21:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 5956, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5937, "src": "7646:8:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "7621:33:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "7594:60:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5960, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5945, "src": "7681:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5961, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5937, "src": "7688:8:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5959, "name": "isApprovedForAll", "nodeType": "Identifier", "overloadedDeclarations": [ 5836 ], "referencedDeclaration": 5836, "src": "7664:16:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_address_$returns$_t_bool_$", "typeString": "function (address,address) view returns (bool)" } }, "id": 5962, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7664:33:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "7594:103:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 5964, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7586:117:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 5943, "id": 5965, "nodeType": "Return", "src": "7579:124:31" } ] }, "documentation": "@dev Returns whether the given spender can transfer a given token ID\n@param _spender address of the spender to query\n@param _tokenId uint256 ID of the token to be transferred\n@return bool whether the msg.sender is approved for the given token ID,\n is an operator of the owner, or is the owner of the token", "id": 5967, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "isApprovedOrOwner", "nodeType": "FunctionDefinition", "parameters": { "id": 5940, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5937, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 5967, "src": "7302:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5936, "name": "address", "nodeType": "ElementaryTypeName", "src": "7302:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5939, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5967, "src": "7324:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5938, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7324:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7296:48:31" }, "payable": false, "returnParameters": { "id": 5943, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5942, "name": "", "nodeType": "VariableDeclaration", "scope": 5967, "src": "7380:4:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 5941, "name": "bool", "nodeType": "ElementaryTypeName", "src": "7380:4:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "7379:6:31" }, "scope": 6166, "src": "7270:438:31", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 5995, "nodeType": "Block", "src": "8012:114:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5979, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5975, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5969, "src": "8026:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5977, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8041:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5976, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8033:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5978, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8033:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8026:17:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5974, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "8018:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5980, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8018:26:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5981, "nodeType": "ExpressionStatement", "src": "8018:26:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5983, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5969, "src": "8061:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5984, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5971, "src": "8066:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5982, "name": "addTokenTo", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6090, "src": "8050:10:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 5985, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8050:25:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5986, "nodeType": "ExpressionStatement", "src": "8050:25:31" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5989, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8103:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5988, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8095:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5990, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8095:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5991, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5969, "src": "8107:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5992, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5971, "src": "8112:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5987, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5521, "src": "8086:8:31", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 5993, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8086:35:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5994, "nodeType": "EmitStatement", "src": "8081:40:31" } ] }, "documentation": "@dev Internal function to mint a new token\nReverts 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 by the msg.sender", "id": 5996, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "_mint", "nodeType": "FunctionDefinition", "parameters": { "id": 5972, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5969, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5996, "src": "7972:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5968, "name": "address", "nodeType": "ElementaryTypeName", "src": "7972:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5971, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5996, "src": "7985:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5970, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7985:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7971:31:31" }, "payable": false, "returnParameters": { "id": 5973, "nodeType": "ParameterList", "parameters": [], "src": "8012:0:31" }, "scope": 6166, "src": "7957:169:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 6021, "nodeType": "Block", "src": "8370:130:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6004, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5998, "src": "8390:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 6005, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6000, "src": "8398:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6003, "name": "clearApproval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6055, "src": "8376:13:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 6006, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8376:31:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6007, "nodeType": "ExpressionStatement", "src": "8376:31:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6009, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5998, "src": "8429:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 6010, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6000, "src": "8437:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6008, "name": "removeTokenFrom", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6125, "src": "8413:15:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 6011, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8413:33:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6012, "nodeType": "ExpressionStatement", "src": "8413:33:31" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6014, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5998, "src": "8466:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 6016, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8482:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 6015, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8474:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 6017, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8474:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 6018, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6000, "src": "8486:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6013, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5521, "src": "8457:8:31", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 6019, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8457:38:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6020, "nodeType": "EmitStatement", "src": "8452:43:31" } ] }, "documentation": "@dev Internal function to burn a specific token\nReverts if the token does not exist\n@param _tokenId uint256 ID of the token being burned by the msg.sender", "id": 6022, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "_burn", "nodeType": "FunctionDefinition", "parameters": { "id": 6001, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5998, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 6022, "src": "8327:14:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5997, "name": "address", "nodeType": "ElementaryTypeName", "src": "8327:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6000, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 6022, "src": "8343:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5999, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8343:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "8326:34:31" }, "payable": false, "returnParameters": { "id": 6002, "nodeType": "ParameterList", "parameters": [], "src": "8370:0:31" }, "scope": 6166, "src": "8312:188:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 6054, "nodeType": "Block", "src": "8828:148:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 6034, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6031, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6026, "src": "8850:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6030, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [ 5712 ], "referencedDeclaration": 5712, "src": "8842:7:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 6032, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8842:17:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 6033, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6024, "src": "8863:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8842:27:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 6029, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "8834:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 6035, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8834:36:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6036, "nodeType": "ExpressionStatement", "src": "8834:36:31" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 6043, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6037, "name": "tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5646, "src": "8880:14:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 6039, "indexExpression": { "argumentTypes": null, "id": 6038, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6026, "src": "8895:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "8880:24:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 6041, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8916:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 6040, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8908:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 6042, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8908:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8880:38:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 6053, "nodeType": "IfStatement", "src": "8876:96:31", "trueBody": { "id": 6052, "nodeType": "Block", "src": "8920:52:31", "statements": [ { "expression": { "argumentTypes": null, "id": 6050, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6044, "name": "tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5646, "src": "8928:14:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 6046, "indexExpression": { "argumentTypes": null, "id": 6045, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6026, "src": "8943:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "8928:24:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 6048, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8963:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 6047, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8955:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 6049, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8955:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8928:37:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 6051, "nodeType": "ExpressionStatement", "src": "8928:37:31" } ] } } ] }, "documentation": "@dev Internal function to clear current approval of a given token ID\nReverts if the given address is not indeed the owner of the token\n@param _owner owner of the token\n@param _tokenId uint256 ID of the token to be transferred", "id": 6055, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "clearApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 6027, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6024, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 6055, "src": "8785:14:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6023, "name": "address", "nodeType": "ElementaryTypeName", "src": "8785:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6026, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 6055, "src": "8801:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6025, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8801:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "8784:34:31" }, "payable": false, "returnParameters": { "id": 6028, "nodeType": "ParameterList", "parameters": [], "src": "8828:0:31" }, "scope": 6166, "src": "8762:214:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 6089, "nodeType": "Block", "src": "9299:144:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 6069, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6063, "name": "tokenOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5642, "src": "9313:10:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 6065, "indexExpression": { "argumentTypes": null, "id": 6064, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6059, "src": "9324:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "9313:20:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 6067, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9345:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 6066, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9337:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 6068, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9337:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "9313:34:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 6062, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "9305:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 6070, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9305:43:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6071, "nodeType": "ExpressionStatement", "src": "9305:43:31" }, { "expression": { "argumentTypes": null, "id": 6076, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6072, "name": "tokenOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5642, "src": "9354:10:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 6074, "indexExpression": { "argumentTypes": null, "id": 6073, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6059, "src": "9365:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9354:20:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 6075, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6057, "src": "9377:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "9354:26:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 6077, "nodeType": "ExpressionStatement", "src": "9354:26:31" }, { "expression": { "argumentTypes": null, "id": 6087, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6078, "name": "ownedTokensCount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5650, "src": "9386:16:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 6080, "indexExpression": { "argumentTypes": null, "id": 6079, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6057, "src": "9403:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9386:21:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 6085, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9436:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6081, "name": "ownedTokensCount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5650, "src": "9410:16:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 6083, "indexExpression": { "argumentTypes": null, "id": 6082, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6057, "src": "9427:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "9410:21:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6084, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4797, "src": "9410:25:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 6086, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9410:28:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9386:52:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6088, "nodeType": "ExpressionStatement", "src": "9386:52:31" } ] }, "documentation": "@dev Internal function to add a token ID to the list of a given address\n@param _to address representing the new owner of the given token ID\n@param _tokenId uint256 ID of the token to be added to the tokens list of the given address", "id": 6090, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "addTokenTo", "nodeType": "FunctionDefinition", "parameters": { "id": 6060, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6057, "name": "_to", "nodeType": "VariableDeclaration", "scope": 6090, "src": "9259:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6056, "name": "address", "nodeType": "ElementaryTypeName", "src": "9259:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6059, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 6090, "src": "9272:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6058, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9272:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "9258:31:31" }, "payable": false, "returnParameters": { "id": 6061, "nodeType": "ParameterList", "parameters": [], "src": "9299:0:31" }, "scope": 6166, "src": "9239:204:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 6124, "nodeType": "Block", "src": "9789:147:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 6102, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6099, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "9811:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6098, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [ 5712 ], "referencedDeclaration": 5712, "src": "9803:7:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 6100, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9803:17:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 6101, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6092, "src": "9824:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "9803:26:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 6097, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "9795:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 6103, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9795:35:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6104, "nodeType": "ExpressionStatement", "src": "9795:35:31" }, { "expression": { "argumentTypes": null, "id": 6114, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6105, "name": "ownedTokensCount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5650, "src": "9836:16:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 6107, "indexExpression": { "argumentTypes": null, "id": 6106, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6092, "src": "9853:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9836:23:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 6112, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9890:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6108, "name": "ownedTokensCount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5650, "src": "9862:16:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 6110, "indexExpression": { "argumentTypes": null, "id": 6109, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6092, "src": "9879:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "9862:23:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6111, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4773, "src": "9862:27:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 6113, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9862:30:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9836:56:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6115, "nodeType": "ExpressionStatement", "src": "9836:56:31" }, { "expression": { "argumentTypes": null, "id": 6122, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6116, "name": "tokenOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5642, "src": "9898:10:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 6118, "indexExpression": { "argumentTypes": null, "id": 6117, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "9909:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9898:20:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 6120, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9929:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 6119, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9921:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 6121, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9921:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "9898:33:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 6123, "nodeType": "ExpressionStatement", "src": "9898:33:31" } ] }, "documentation": "@dev Internal function to remove a token ID from the list of a given address\n@param _from address representing the previous owner of the given token ID\n@param _tokenId uint256 ID of the token to be removed from the tokens list of the given address", "id": 6125, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "removeTokenFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 6095, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6092, "name": "_from", "nodeType": "VariableDeclaration", "scope": 6125, "src": "9747:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6091, "name": "address", "nodeType": "ElementaryTypeName", "src": "9747:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6094, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 6125, "src": "9762:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6093, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9762:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "9746:33:31" }, "payable": false, "returnParameters": { "id": 6096, "nodeType": "ParameterList", "parameters": [], "src": "9789:0:31" }, "scope": 6166, "src": "9722:214:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 6164, "nodeType": "Block", "src": "10589:200:31", "statements": [ { "condition": { "argumentTypes": null, "id": 6141, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "10599:17:31", "subExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 6138, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6129, "src": "10600:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 6139, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "isContract", "nodeType": "MemberAccess", "referencedDeclaration": 4642, "src": "10600:14:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$bound_to$_t_address_$", "typeString": "function (address) view returns (bool)" } }, "id": 6140, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10600:16:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 6145, "nodeType": "IfStatement", "src": "10595:49:31", "trueBody": { "id": 6144, "nodeType": "Block", "src": "10618:26:31", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 6142, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "10633:4:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 6137, "id": 6143, "nodeType": "Return", "src": "10626:11:31" } ] } }, { "assignments": [ 6147 ], "declarations": [ { "constant": false, "id": 6147, "name": "retval", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10649:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 6146, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "10649:6:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": null, "visibility": "internal" } ], "id": 6158, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 6152, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "10709:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 6153, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "10709:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 6154, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6127, "src": "10721:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 6155, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6131, "src": "10728:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 6156, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6133, "src": "10738:5:31", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6149, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6129, "src": "10680:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 6148, "name": "ERC721Receiver", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6185, "src": "10665:14:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721Receiver_$6185_$", "typeString": "type(contract ERC721Receiver)" } }, "id": 6150, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10665:19:31", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC721Receiver_$6185", "typeString": "contract ERC721Receiver" } }, "id": 6151, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "onERC721Received", "nodeType": "MemberAccess", "referencedDeclaration": 6184, "src": "10665:36:31", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bytes4_$", "typeString": "function (address,address,uint256,bytes memory) external returns (bytes4)" } }, "id": 6157, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10665:79:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "VariableDeclarationStatement", "src": "10649:95:31" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "id": 6161, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 6159, "name": "retval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6147, "src": "10758:6:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 6160, "name": "ERC721_RECEIVED", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5638, "src": "10768:15:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "src": "10758:25:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 6162, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "10757:27:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 6137, "id": 6163, "nodeType": "Return", "src": "10750:34:31" } ] }, "documentation": "@dev Internal function to invoke `onERC721Received` on a target address\nThe call is not executed if the target address is not a contract\n@param _from address representing the previous owner of the given token ID\n@param _to target address that will receive the tokens\n@param _tokenId uint256 ID of the token to be transferred\n@param _data bytes optional data to send along with the call\n@return whether the call correctly returned the expected magic value", "id": 6165, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "checkAndCallSafeTransfer", "nodeType": "FunctionDefinition", "parameters": { "id": 6134, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6127, "name": "_from", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10481:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6126, "name": "address", "nodeType": "ElementaryTypeName", "src": "10481:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6129, "name": "_to", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10500:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6128, "name": "address", "nodeType": "ElementaryTypeName", "src": "10500:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6131, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10517:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6130, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10517:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6133, "name": "_data", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10539:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6132, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "10539:5:31", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "10475:79:31" }, "payable": false, "returnParameters": { "id": 6137, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6136, "name": "", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10581:4:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 6135, "name": "bool", "nodeType": "ElementaryTypeName", "src": "10581:4:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "10580:6:31" }, "scope": 6166, "src": "10442:347:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" } ], "scope": 6167, "src": "363:10428:31" } ], "src": "0:10792:31" }, "legacyAST": { "absolutePath": "zeppelin-solidity/contracts/token/ERC721/ERC721BasicToken.sol", "exportedSymbols": { "ERC721BasicToken": [ 6166 ] }, "id": 6167, "nodeType": "SourceUnit", "nodes": [ { "id": 5620, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:24:31" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC721/ERC721Basic.sol", "file": "./ERC721Basic.sol", "id": 5621, "nodeType": "ImportDirective", "scope": 6167, "sourceUnit": 5619, "src": "26:27:31", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/token/ERC721/ERC721Receiver.sol", "file": "./ERC721Receiver.sol", "id": 5622, "nodeType": "ImportDirective", "scope": 6167, "sourceUnit": 6186, "src": "54:30:31", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/math/SafeMath.sol", "file": "../../math/SafeMath.sol", "id": 5623, "nodeType": "ImportDirective", "scope": 6167, "sourceUnit": 4799, "src": "85:33:31", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/AddressUtils.sol", "file": "../../AddressUtils.sol", "id": 5624, "nodeType": "ImportDirective", "scope": 6167, "sourceUnit": 4644, "src": "119:32:31", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "zeppelin-solidity/contracts/introspection/SupportsInterfaceWithLookup.sol", "file": "../../introspection/SupportsInterfaceWithLookup.sol", "id": 5625, "nodeType": "ImportDirective", "scope": 6167, "sourceUnit": 4705, "src": "152:61:31", "symbolAliases": [], "unitAlias": "" }, { "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 5626, "name": "SupportsInterfaceWithLookup", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4704, "src": "392:27:31", "typeDescriptions": { "typeIdentifier": "t_contract$_SupportsInterfaceWithLookup_$4704", "typeString": "contract SupportsInterfaceWithLookup" } }, "id": 5627, "nodeType": "InheritanceSpecifier", "src": "392:27:31" }, { "arguments": null, "baseName": { "contractScope": null, "id": 5628, "name": "ERC721Basic", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5618, "src": "421:11:31", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC721Basic_$5618", "typeString": "contract ERC721Basic" } }, "id": 5629, "nodeType": "InheritanceSpecifier", "src": "421:11:31" } ], "contractDependencies": [ 4653, 4704, 5618 ], "contractKind": "contract", "documentation": "@title ERC721 Non-Fungible Token Standard basic implementation\n@dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md", "fullyImplemented": true, "id": 6166, "linearizedBaseContracts": [ 6166, 5618, 4704, 4653 ], "name": "ERC721BasicToken", "nodeType": "ContractDefinition", "nodes": [ { "id": 5632, "libraryName": { "contractScope": null, "id": 5630, "name": "SafeMath", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4798, "src": "444:8:31", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeMath_$4798", "typeString": "library SafeMath" } }, "nodeType": "UsingForDirective", "src": "438:27:31", "typeName": { "id": 5631, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "457:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "id": 5635, "libraryName": { "contractScope": null, "id": 5633, "name": "AddressUtils", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 4643, "src": "474:12:31", "typeDescriptions": { "typeIdentifier": "t_contract$_AddressUtils_$4643", "typeString": "library AddressUtils" } }, "nodeType": "UsingForDirective", "src": "468:31:31", "typeName": { "id": 5634, "name": "address", "nodeType": "ElementaryTypeName", "src": "491:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, { "constant": true, "id": 5638, "name": "ERC721_RECEIVED", "nodeType": "VariableDeclaration", "scope": 6166, "src": "670:52:31", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 5636, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "670:6:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": { "argumentTypes": null, "hexValue": "30783135306237613032", "id": 5637, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "712:10:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_353073666_by_1", "typeString": "int_const 353073666" }, "value": "0x150b7a02" }, "visibility": "private" }, { "constant": false, "id": 5642, "name": "tokenOwner", "nodeType": "VariableDeclaration", "scope": 6166, "src": "763:48:31", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" }, "typeName": { "id": 5641, "keyType": { "id": 5639, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "772:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Mapping", "src": "763:28:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" }, "valueType": { "id": 5640, "name": "address", "nodeType": "ElementaryTypeName", "src": "783:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5646, "name": "tokenApprovals", "nodeType": "VariableDeclaration", "scope": 6166, "src": "863:52:31", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" }, "typeName": { "id": 5645, "keyType": { "id": 5643, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "872:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Mapping", "src": "863:28:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" }, "valueType": { "id": 5644, "name": "address", "nodeType": "ElementaryTypeName", "src": "883:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5650, "name": "ownedTokensCount", "nodeType": "VariableDeclaration", "scope": 6166, "src": "969:54:31", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "typeName": { "id": 5649, "keyType": { "id": 5647, "name": "address", "nodeType": "ElementaryTypeName", "src": "978:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "969:28:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 5648, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "989:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5656, "name": "operatorApprovals", "nodeType": "VariableDeclaration", "scope": 6166, "src": "1074:73:31", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_bool_$_$", "typeString": "mapping(address => mapping(address => bool))" }, "typeName": { "id": 5655, "keyType": { "id": 5651, "name": "address", "nodeType": "ElementaryTypeName", "src": "1083:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "1074:46:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_bool_$_$", "typeString": "mapping(address => mapping(address => bool))" }, "valueType": { "id": 5654, "keyType": { "id": 5652, "name": "address", "nodeType": "ElementaryTypeName", "src": "1103:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "1094:25:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_bool_$", "typeString": "mapping(address => bool)" }, "valueType": { "id": 5653, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1114:4:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } } }, "value": null, "visibility": "internal" }, { "body": { "id": 5667, "nodeType": "Block", "src": "1179:172:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5660, "name": "InterfaceId_ERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5504, "src": "1277:18:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } ], "id": 5659, "name": "_registerInterface", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4703, "src": "1258:18:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes4_$returns$__$", "typeString": "function (bytes4)" } }, "id": 5661, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1258:38:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5662, "nodeType": "ExpressionStatement", "src": "1258:38:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5664, "name": "InterfaceId_ERC721Exists", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5507, "src": "1321:24:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } ], "id": 5663, "name": "_registerInterface", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4703, "src": "1302:18:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_bytes4_$returns$__$", "typeString": "function (bytes4)" } }, "id": 5665, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1302:44:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5666, "nodeType": "ExpressionStatement", "src": "1302:44:31" } ] }, "documentation": null, "id": 5668, "implemented": true, "isConstructor": true, "isDeclaredConst": false, "modifiers": [], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 5657, "nodeType": "ParameterList", "parameters": [], "src": "1163:2:31" }, "payable": false, "returnParameters": { "id": 5658, "nodeType": "ParameterList", "parameters": [], "src": "1179:0:31" }, "scope": 6166, "src": "1152:199:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, { "body": { "id": 5687, "nodeType": "Block", "src": "1608:77:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5680, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5676, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5670, "src": "1622:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5678, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1640:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5677, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1632:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5679, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1632:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "1622:20:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5675, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "1614:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5681, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1614:29:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5682, "nodeType": "ExpressionStatement", "src": "1614:29:31" }, { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5683, "name": "ownedTokensCount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5650, "src": "1656:16:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 5685, "indexExpression": { "argumentTypes": null, "id": 5684, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5670, "src": "1673:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1656:24:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 5674, "id": 5686, "nodeType": "Return", "src": "1649:31:31" } ] }, "documentation": "@dev Gets the balance of the specified address\n@param _owner address to query the balance of\n@return uint256 representing the amount owned by the passed address", "id": 5688, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "balanceOf", "nodeType": "FunctionDefinition", "parameters": { "id": 5671, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5670, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 5688, "src": "1562:14:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5669, "name": "address", "nodeType": "ElementaryTypeName", "src": "1562:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1561:16:31" }, "payable": false, "returnParameters": { "id": 5674, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5673, "name": "", "nodeType": "VariableDeclaration", "scope": 5688, "src": "1599:7:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5672, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1599:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1598:9:31" }, "scope": 6166, "src": "1543:142:31", "stateMutability": "view", "superFunction": 5544, "visibility": "public" }, { "body": { "id": 5711, "nodeType": "Block", "src": "1963:99:31", "statements": [ { "assignments": [ 5696 ], "declarations": [ { "constant": false, "id": 5696, "name": "owner", "nodeType": "VariableDeclaration", "scope": 5712, "src": "1969:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5695, "name": "address", "nodeType": "ElementaryTypeName", "src": "1969:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 5700, "initialValue": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5697, "name": "tokenOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5642, "src": "1985:10:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 5699, "indexExpression": { "argumentTypes": null, "id": 5698, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5690, "src": "1996:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1985:20:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "1969:36:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5706, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5702, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5696, "src": "2019:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5704, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2036:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5703, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2028:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5705, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2028:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "2019:19:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5701, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "2011:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5707, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2011:28:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5708, "nodeType": "ExpressionStatement", "src": "2011:28:31" }, { "expression": { "argumentTypes": null, "id": 5709, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5696, "src": "2052:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 5694, "id": 5710, "nodeType": "Return", "src": "2045:12:31" } ] }, "documentation": "@dev Gets the owner of the specified token ID\n@param _tokenId uint256 ID of the token to query the owner of\n@return owner address currently marked as the owner of the given token ID", "id": 5712, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "ownerOf", "nodeType": "FunctionDefinition", "parameters": { "id": 5691, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5690, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5712, "src": "1915:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5689, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1915:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1914:18:31" }, "payable": false, "returnParameters": { "id": 5694, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5693, "name": "", "nodeType": "VariableDeclaration", "scope": 5712, "src": "1954:7:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5692, "name": "address", "nodeType": "ElementaryTypeName", "src": "1954:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1953:9:31" }, "scope": 6166, "src": "1898:164:31", "stateMutability": "view", "superFunction": 5551, "visibility": "public" }, { "body": { "id": 5731, "nodeType": "Block", "src": "2301:79:31", "statements": [ { "assignments": [ 5720 ], "declarations": [ { "constant": false, "id": 5720, "name": "owner", "nodeType": "VariableDeclaration", "scope": 5732, "src": "2307:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5719, "name": "address", "nodeType": "ElementaryTypeName", "src": "2307:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 5724, "initialValue": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5721, "name": "tokenOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5642, "src": "2323:10:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 5723, "indexExpression": { "argumentTypes": null, "id": 5722, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5714, "src": "2334:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "2323:20:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "2307:36:31" }, { "expression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5729, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5725, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5720, "src": "2356:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5727, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "2373:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5726, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "2365:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5728, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2365:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "2356:19:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 5718, "id": 5730, "nodeType": "Return", "src": "2349:26:31" } ] }, "documentation": "@dev Returns whether the specified token exists\n@param _tokenId uint256 ID of the token to query the existence of\n@return whether the token exists", "id": 5732, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "exists", "nodeType": "FunctionDefinition", "parameters": { "id": 5715, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5714, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5732, "src": "2256:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5713, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2256:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2255:18:31" }, "payable": false, "returnParameters": { "id": 5718, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5717, "name": "", "nodeType": "VariableDeclaration", "scope": 5732, "src": "2295:4:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 5716, "name": "bool", "nodeType": "ElementaryTypeName", "src": "2295:4:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "2294:6:31" }, "scope": 6166, "src": "2240:140:31", "stateMutability": "view", "superFunction": 5558, "visibility": "public" }, { "body": { "id": 5776, "nodeType": "Block", "src": "2840:222:31", "statements": [ { "assignments": [ 5740 ], "declarations": [ { "constant": false, "id": 5740, "name": "owner", "nodeType": "VariableDeclaration", "scope": 5777, "src": "2846:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5739, "name": "address", "nodeType": "ElementaryTypeName", "src": "2846:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 5744, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5742, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5736, "src": "2870:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5741, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [ 5712 ], "referencedDeclaration": 5712, "src": "2862:7:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 5743, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2862:17:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "2846:33:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5748, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5746, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5734, "src": "2893:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "id": 5747, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5740, "src": "2900:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "2893:12:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5745, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "2885:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5749, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2885:21:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5750, "nodeType": "ExpressionStatement", "src": "2885:21:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 5761, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5755, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5752, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "2920:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5753, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2920:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 5754, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5740, "src": "2934:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "2920:19:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5757, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5740, "src": "2960:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5758, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "2967:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5759, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "2967:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5756, "name": "isApprovedForAll", "nodeType": "Identifier", "overloadedDeclarations": [ 5836 ], "referencedDeclaration": 5836, "src": "2943:16:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_address_$returns$_t_bool_$", "typeString": "function (address,address) view returns (bool)" } }, "id": 5760, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2943:35:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "2920:58:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5751, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "2912:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5762, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2912:67:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5763, "nodeType": "ExpressionStatement", "src": "2912:67:31" }, { "expression": { "argumentTypes": null, "id": 5768, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5764, "name": "tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5646, "src": "2986:14:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 5766, "indexExpression": { "argumentTypes": null, "id": 5765, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5736, "src": "3001:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "2986:24:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 5767, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5734, "src": "3013:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "2986:30:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 5769, "nodeType": "ExpressionStatement", "src": "2986:30:31" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5771, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5740, "src": "3036:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5772, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5734, "src": "3043:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5773, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5736, "src": "3048:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5770, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5529, "src": "3027:8:31", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 5774, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3027:30:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5775, "nodeType": "EmitStatement", "src": "3022:35:31" } ] }, "documentation": "@dev Approves another address to transfer the given token ID\nThe zero address indicates there is no approved address.\nThere can only be one approved address per token at a given time.\nCan only be called by the token owner or an approved operator.\n@param _to address to be approved for the given token ID\n@param _tokenId uint256 ID of the token to be approved", "id": 5777, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 5737, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5734, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5777, "src": "2802:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5733, "name": "address", "nodeType": "ElementaryTypeName", "src": "2802:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5736, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5777, "src": "2815:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5735, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2815:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2801:31:31" }, "payable": false, "returnParameters": { "id": 5738, "nodeType": "ParameterList", "parameters": [], "src": "2840:0:31" }, "scope": 6166, "src": "2785:277:31", "stateMutability": "nonpayable", "superFunction": 5565, "visibility": "public" }, { "body": { "id": 5788, "nodeType": "Block", "src": "3358:42:31", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5784, "name": "tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5646, "src": "3371:14:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 5786, "indexExpression": { "argumentTypes": null, "id": 5785, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5779, "src": "3386:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3371:24:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "functionReturnParameters": 5783, "id": 5787, "nodeType": "Return", "src": "3364:31:31" } ] }, "documentation": "@dev Gets the approved address for a token ID, or zero if no address set\n@param _tokenId uint256 ID of the token to query the approval of\n@return address currently approved for the given token ID", "id": 5789, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "getApproved", "nodeType": "FunctionDefinition", "parameters": { "id": 5780, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5779, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5789, "src": "3310:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5778, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3310:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3309:18:31" }, "payable": false, "returnParameters": { "id": 5783, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5782, "name": "", "nodeType": "VariableDeclaration", "scope": 5789, "src": "3349:7:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5781, "name": "address", "nodeType": "ElementaryTypeName", "src": "3349:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "3348:9:31" }, "scope": 6166, "src": "3289:111:31", "stateMutability": "view", "superFunction": 5572, "visibility": "public" }, { "body": { "id": 5819, "nodeType": "Block", "src": "3743:142:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5800, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5797, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5791, "src": "3757:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5798, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "3764:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5799, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3764:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "3757:17:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5796, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "3749:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5801, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3749:26:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5802, "nodeType": "ExpressionStatement", "src": "3749:26:31" }, { "expression": { "argumentTypes": null, "id": 5810, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5803, "name": "operatorApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5656, "src": "3781:17:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_bool_$_$", "typeString": "mapping(address => mapping(address => bool))" } }, "id": 5807, "indexExpression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5804, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "3799:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5805, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3799:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "3781:29:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_bool_$", "typeString": "mapping(address => bool)" } }, "id": 5808, "indexExpression": { "argumentTypes": null, "id": 5806, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5791, "src": "3811:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "3781:34:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 5809, "name": "_approved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5793, "src": "3818:9:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "3781:46:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 5811, "nodeType": "ExpressionStatement", "src": "3781:46:31" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5813, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "3853:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5814, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "3853:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5815, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5791, "src": "3865:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5816, "name": "_approved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5793, "src": "3870:9:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5812, "name": "ApprovalForAll", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5537, "src": "3838:14:31", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_bool_$returns$__$", "typeString": "function (address,address,bool)" } }, "id": 5817, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3838:42:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5818, "nodeType": "EmitStatement", "src": "3833:47:31" } ] }, "documentation": "@dev Sets or unsets the approval of a given operator\nAn operator is allowed to transfer all tokens of the sender on their behalf\n@param _to operator address to set the approval\n@param _approved representing the status of the approval to be set", "id": 5820, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "setApprovalForAll", "nodeType": "FunctionDefinition", "parameters": { "id": 5794, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5791, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5820, "src": "3707:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5790, "name": "address", "nodeType": "ElementaryTypeName", "src": "3707:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5793, "name": "_approved", "nodeType": "VariableDeclaration", "scope": 5820, "src": "3720:14:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 5792, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3720:4:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3706:29:31" }, "payable": false, "returnParameters": { "id": 5795, "nodeType": "ParameterList", "parameters": [], "src": "3743:0:31" }, "scope": 6166, "src": "3680:205:31", "stateMutability": "nonpayable", "superFunction": 5579, "visibility": "public" }, { "body": { "id": 5835, "nodeType": "Block", "src": "4308:54:31", "statements": [ { "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 5829, "name": "operatorApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5656, "src": "4321:17:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_bool_$_$", "typeString": "mapping(address => mapping(address => bool))" } }, "id": 5831, "indexExpression": { "argumentTypes": null, "id": 5830, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5822, "src": "4339:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4321:25:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_bool_$", "typeString": "mapping(address => bool)" } }, "id": 5833, "indexExpression": { "argumentTypes": null, "id": 5832, "name": "_operator", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5824, "src": "4347:9:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "4321:36:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 5828, "id": 5834, "nodeType": "Return", "src": "4314:43:31" } ] }, "documentation": "@dev Tells whether an operator is approved by a given owner\n@param _owner owner address which you want to query the approval of\n@param _operator operator address which you want to query the approval of\n@return bool whether the given operator is approved by the given owner", "id": 5836, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "isApprovedForAll", "nodeType": "FunctionDefinition", "parameters": { "id": 5825, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5822, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 5836, "src": "4225:14:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5821, "name": "address", "nodeType": "ElementaryTypeName", "src": "4225:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5824, "name": "_operator", "nodeType": "VariableDeclaration", "scope": 5836, "src": "4245:17:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5823, "name": "address", "nodeType": "ElementaryTypeName", "src": "4245:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "4219:47:31" }, "payable": false, "returnParameters": { "id": 5828, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5827, "name": "", "nodeType": "VariableDeclaration", "scope": 5836, "src": "4300:4:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 5826, "name": "bool", "nodeType": "ElementaryTypeName", "src": "4300:4:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "4299:6:31" }, "scope": 6166, "src": "4194:168:31", "stateMutability": "view", "superFunction": 5588, "visibility": "public" }, { "body": { "id": 5890, "nodeType": "Block", "src": "4877:273:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 5847, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "4909:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 5848, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4909:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5849, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5842, "src": "4921:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5846, "name": "isApprovedOrOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5967, "src": "4891:17:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) view returns (bool)" } }, "id": 5850, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4891:39:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5845, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "4883:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5851, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4883:48:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5852, "nodeType": "ExpressionStatement", "src": "4883:48:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5858, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5854, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5838, "src": "4945:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5856, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4962:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5855, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4954:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5857, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4954:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "4945:19:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5853, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "4937:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5859, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4937:28:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5860, "nodeType": "ExpressionStatement", "src": "4937:28:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5866, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5862, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5840, "src": "4979:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5864, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "4994:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5863, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4986:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5865, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4986:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "4979:17:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5861, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "4971:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5867, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4971:26:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5868, "nodeType": "ExpressionStatement", "src": "4971:26:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5870, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5838, "src": "5018:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5871, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5842, "src": "5025:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5869, "name": "clearApproval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6055, "src": "5004:13:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 5872, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5004:30:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5873, "nodeType": "ExpressionStatement", "src": "5004:30:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5875, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5838, "src": "5056:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5876, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5842, "src": "5063:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5874, "name": "removeTokenFrom", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6125, "src": "5040:15:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 5877, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5040:32:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5878, "nodeType": "ExpressionStatement", "src": "5040:32:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5880, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5840, "src": "5089:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5881, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5842, "src": "5094:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5879, "name": "addTokenTo", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6090, "src": "5078:10:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 5882, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5078:25:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5883, "nodeType": "ExpressionStatement", "src": "5078:25:31" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5885, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5838, "src": "5124:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5886, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5840, "src": "5131:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5887, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5842, "src": "5136:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5884, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5521, "src": "5115:8:31", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 5888, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5115:30:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5889, "nodeType": "EmitStatement", "src": "5110:35:31" } ] }, "documentation": "@dev Transfers the ownership of a given token ID to another address\nUsage of this method is discouraged, use `safeTransferFrom` whenever possible\nRequires the msg sender to be the owner, approved, or operator\n@param _from current owner of the token\n@param _to address to receive the ownership of the given token ID\n@param _tokenId uint256 ID of the token to be transferred", "id": 5891, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 5843, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5838, "name": "_from", "nodeType": "VariableDeclaration", "scope": 5891, "src": "4807:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5837, "name": "address", "nodeType": "ElementaryTypeName", "src": "4807:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5840, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5891, "src": "4826:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5839, "name": "address", "nodeType": "ElementaryTypeName", "src": "4826:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5842, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5891, "src": "4843:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5841, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4843:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "4801:62:31" }, "payable": false, "returnParameters": { "id": 5844, "nodeType": "ParameterList", "parameters": [], "src": "4877:0:31" }, "scope": 6166, "src": "4780:370:31", "stateMutability": "nonpayable", "superFunction": 5597, "visibility": "public" }, { "body": { "id": 5907, "nodeType": "Block", "src": "5867:98:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5901, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5893, "src": "5935:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5902, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5895, "src": "5942:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5903, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5897, "src": "5947:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "", "id": 5904, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "5957:2:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" }, "value": "" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" } ], "id": 5900, "name": "safeTransferFrom", "nodeType": "Identifier", "overloadedDeclarations": [ 5908, 5935 ], "referencedDeclaration": 5935, "src": "5918:16:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (address,address,uint256,bytes memory)" } }, "id": 5905, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5918:42:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5906, "nodeType": "ExpressionStatement", "src": "5918:42:31" } ] }, "documentation": "@dev Safely transfers the ownership of a given token ID to another address\nIf the target address is a contract, it must implement `onERC721Received`,\nwhich is called upon a safe transfer, and return the magic value\n`bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\nthe transfer is reverted.\n * Requires the msg sender to be the owner, approved, or operator\n@param _from current owner of the token\n@param _to address to receive the ownership of the given token ID\n@param _tokenId uint256 ID of the token to be transferred", "id": 5908, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "safeTransferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 5898, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5893, "name": "_from", "nodeType": "VariableDeclaration", "scope": 5908, "src": "5797:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5892, "name": "address", "nodeType": "ElementaryTypeName", "src": "5797:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5895, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5908, "src": "5816:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5894, "name": "address", "nodeType": "ElementaryTypeName", "src": "5816:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5897, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5908, "src": "5833:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5896, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5833:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "5791:62:31" }, "payable": false, "returnParameters": { "id": 5899, "nodeType": "ParameterList", "parameters": [], "src": "5867:0:31" }, "scope": 6166, "src": "5766:199:31", "stateMutability": "nonpayable", "superFunction": 5606, "visibility": "public" }, { "body": { "id": 5934, "nodeType": "Block", "src": "6765:158:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5920, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5910, "src": "6784:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5921, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5912, "src": "6791:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5922, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5914, "src": "6796:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5919, "name": "transferFrom", "nodeType": "Identifier", "overloadedDeclarations": [ 5891 ], "referencedDeclaration": 5891, "src": "6771:12:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 5923, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6771:34:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5924, "nodeType": "ExpressionStatement", "src": "6771:34:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5927, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5910, "src": "6889:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5928, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5912, "src": "6896:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5929, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5914, "src": "6901:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 5930, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5916, "src": "6911:5:31", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 5926, "name": "checkAndCallSafeTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6165, "src": "6864:24:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bool_$", "typeString": "function (address,address,uint256,bytes memory) returns (bool)" } }, "id": 5931, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6864:53:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5925, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "6856:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5932, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6856:62:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5933, "nodeType": "ExpressionStatement", "src": "6856:62:31" } ] }, "documentation": "@dev Safely transfers the ownership of a given token ID to another address\nIf the target address is a contract, it must implement `onERC721Received`,\nwhich is called upon a safe transfer, and return the magic value\n`bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`; otherwise,\nthe transfer is reverted.\nRequires the msg sender to be the owner, approved, or operator\n@param _from current owner of the token\n@param _to address to receive the ownership of the given token ID\n@param _tokenId uint256 ID of the token to be transferred\n@param _data bytes data to send along with a safe transfer check", "id": 5935, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "safeTransferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 5917, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5910, "name": "_from", "nodeType": "VariableDeclaration", "scope": 5935, "src": "6678:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5909, "name": "address", "nodeType": "ElementaryTypeName", "src": "6678:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5912, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5935, "src": "6697:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5911, "name": "address", "nodeType": "ElementaryTypeName", "src": "6697:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5914, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5935, "src": "6714:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5913, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6714:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5916, "name": "_data", "nodeType": "VariableDeclaration", "scope": 5935, "src": "6736:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 5915, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6736:5:31", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "6672:79:31" }, "payable": false, "returnParameters": { "id": 5918, "nodeType": "ParameterList", "parameters": [], "src": "6765:0:31" }, "scope": 6166, "src": "6647:276:31", "stateMutability": "nonpayable", "superFunction": 5617, "visibility": "public" }, { "body": { "id": 5966, "nodeType": "Block", "src": "7388:320:31", "statements": [ { "assignments": [ 5945 ], "declarations": [ { "constant": false, "id": 5945, "name": "owner", "nodeType": "VariableDeclaration", "scope": 5967, "src": "7394:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5944, "name": "address", "nodeType": "ElementaryTypeName", "src": "7394:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "id": 5949, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5947, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5939, "src": "7418:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5946, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [ 5712 ], "referencedDeclaration": 5712, "src": "7410:7:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 5948, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7410:17:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "7394:33:31" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 5963, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 5958, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5952, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5950, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5937, "src": "7594:8:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 5951, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5945, "src": "7606:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "7594:17:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5957, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5954, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5939, "src": "7633:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5953, "name": "getApproved", "nodeType": "Identifier", "overloadedDeclarations": [ 5789 ], "referencedDeclaration": 5789, "src": "7621:11:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 5955, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7621:21:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 5956, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5937, "src": "7646:8:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "7621:33:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "7594:60:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5960, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5945, "src": "7681:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5961, "name": "_spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5937, "src": "7688:8:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 5959, "name": "isApprovedForAll", "nodeType": "Identifier", "overloadedDeclarations": [ 5836 ], "referencedDeclaration": 5836, "src": "7664:16:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_address_$returns$_t_bool_$", "typeString": "function (address,address) view returns (bool)" } }, "id": 5962, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7664:33:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "7594:103:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 5964, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7586:117:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 5943, "id": 5965, "nodeType": "Return", "src": "7579:124:31" } ] }, "documentation": "@dev Returns whether the given spender can transfer a given token ID\n@param _spender address of the spender to query\n@param _tokenId uint256 ID of the token to be transferred\n@return bool whether the msg.sender is approved for the given token ID,\n is an operator of the owner, or is the owner of the token", "id": 5967, "implemented": true, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "isApprovedOrOwner", "nodeType": "FunctionDefinition", "parameters": { "id": 5940, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5937, "name": "_spender", "nodeType": "VariableDeclaration", "scope": 5967, "src": "7302:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5936, "name": "address", "nodeType": "ElementaryTypeName", "src": "7302:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5939, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5967, "src": "7324:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5938, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7324:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7296:48:31" }, "payable": false, "returnParameters": { "id": 5943, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5942, "name": "", "nodeType": "VariableDeclaration", "scope": 5967, "src": "7380:4:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 5941, "name": "bool", "nodeType": "ElementaryTypeName", "src": "7380:4:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "7379:6:31" }, "scope": 6166, "src": "7270:438:31", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 5995, "nodeType": "Block", "src": "8012:114:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 5979, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 5975, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5969, "src": "8026:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5977, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8041:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5976, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8033:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5978, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8033:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8026:17:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 5974, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "8018:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 5980, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8018:26:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5981, "nodeType": "ExpressionStatement", "src": "8018:26:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 5983, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5969, "src": "8061:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5984, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5971, "src": "8066:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5982, "name": "addTokenTo", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6090, "src": "8050:10:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 5985, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8050:25:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5986, "nodeType": "ExpressionStatement", "src": "8050:25:31" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 5989, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8103:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 5988, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8095:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 5990, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8095:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5991, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5969, "src": "8107:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 5992, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5971, "src": "8112:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 5987, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5521, "src": "8086:8:31", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 5993, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8086:35:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 5994, "nodeType": "EmitStatement", "src": "8081:40:31" } ] }, "documentation": "@dev Internal function to mint a new token\nReverts 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 by the msg.sender", "id": 5996, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "_mint", "nodeType": "FunctionDefinition", "parameters": { "id": 5972, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5969, "name": "_to", "nodeType": "VariableDeclaration", "scope": 5996, "src": "7972:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5968, "name": "address", "nodeType": "ElementaryTypeName", "src": "7972:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 5971, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 5996, "src": "7985:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5970, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7985:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "7971:31:31" }, "payable": false, "returnParameters": { "id": 5973, "nodeType": "ParameterList", "parameters": [], "src": "8012:0:31" }, "scope": 6166, "src": "7957:169:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 6021, "nodeType": "Block", "src": "8370:130:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6004, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5998, "src": "8390:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 6005, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6000, "src": "8398:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6003, "name": "clearApproval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6055, "src": "8376:13:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 6006, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8376:31:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6007, "nodeType": "ExpressionStatement", "src": "8376:31:31" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6009, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5998, "src": "8429:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 6010, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6000, "src": "8437:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6008, "name": "removeTokenFrom", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6125, "src": "8413:15:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 6011, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8413:33:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6012, "nodeType": "ExpressionStatement", "src": "8413:33:31" }, { "eventCall": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6014, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5998, "src": "8466:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 6016, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8482:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 6015, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8474:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 6017, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8474:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 6018, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6000, "src": "8486:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6013, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5521, "src": "8457:8:31", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 6019, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8457:38:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6020, "nodeType": "EmitStatement", "src": "8452:43:31" } ] }, "documentation": "@dev Internal function to burn a specific token\nReverts if the token does not exist\n@param _tokenId uint256 ID of the token being burned by the msg.sender", "id": 6022, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "_burn", "nodeType": "FunctionDefinition", "parameters": { "id": 6001, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5998, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 6022, "src": "8327:14:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 5997, "name": "address", "nodeType": "ElementaryTypeName", "src": "8327:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6000, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 6022, "src": "8343:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5999, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8343:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "8326:34:31" }, "payable": false, "returnParameters": { "id": 6002, "nodeType": "ParameterList", "parameters": [], "src": "8370:0:31" }, "scope": 6166, "src": "8312:188:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 6054, "nodeType": "Block", "src": "8828:148:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 6034, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6031, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6026, "src": "8850:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6030, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [ 5712 ], "referencedDeclaration": 5712, "src": "8842:7:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 6032, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8842:17:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 6033, "name": "_owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6024, "src": "8863:6:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8842:27:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 6029, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "8834:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 6035, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8834:36:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6036, "nodeType": "ExpressionStatement", "src": "8834:36:31" }, { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 6043, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6037, "name": "tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5646, "src": "8880:14:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 6039, "indexExpression": { "argumentTypes": null, "id": 6038, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6026, "src": "8895:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "8880:24:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 6041, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8916:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 6040, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8908:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 6042, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8908:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8880:38:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 6053, "nodeType": "IfStatement", "src": "8876:96:31", "trueBody": { "id": 6052, "nodeType": "Block", "src": "8920:52:31", "statements": [ { "expression": { "argumentTypes": null, "id": 6050, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6044, "name": "tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5646, "src": "8928:14:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 6046, "indexExpression": { "argumentTypes": null, "id": 6045, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6026, "src": "8943:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "8928:24:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 6048, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8963:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 6047, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8955:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 6049, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8955:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8928:37:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 6051, "nodeType": "ExpressionStatement", "src": "8928:37:31" } ] } } ] }, "documentation": "@dev Internal function to clear current approval of a given token ID\nReverts if the given address is not indeed the owner of the token\n@param _owner owner of the token\n@param _tokenId uint256 ID of the token to be transferred", "id": 6055, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "clearApproval", "nodeType": "FunctionDefinition", "parameters": { "id": 6027, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6024, "name": "_owner", "nodeType": "VariableDeclaration", "scope": 6055, "src": "8785:14:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6023, "name": "address", "nodeType": "ElementaryTypeName", "src": "8785:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6026, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 6055, "src": "8801:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6025, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8801:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "8784:34:31" }, "payable": false, "returnParameters": { "id": 6028, "nodeType": "ParameterList", "parameters": [], "src": "8828:0:31" }, "scope": 6166, "src": "8762:214:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 6089, "nodeType": "Block", "src": "9299:144:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 6069, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6063, "name": "tokenOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5642, "src": "9313:10:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 6065, "indexExpression": { "argumentTypes": null, "id": 6064, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6059, "src": "9324:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "9313:20:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 6067, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9345:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 6066, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9337:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 6068, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9337:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "9313:34:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 6062, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "9305:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 6070, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9305:43:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6071, "nodeType": "ExpressionStatement", "src": "9305:43:31" }, { "expression": { "argumentTypes": null, "id": 6076, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6072, "name": "tokenOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5642, "src": "9354:10:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 6074, "indexExpression": { "argumentTypes": null, "id": 6073, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6059, "src": "9365:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9354:20:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 6075, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6057, "src": "9377:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "9354:26:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 6077, "nodeType": "ExpressionStatement", "src": "9354:26:31" }, { "expression": { "argumentTypes": null, "id": 6087, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6078, "name": "ownedTokensCount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5650, "src": "9386:16:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 6080, "indexExpression": { "argumentTypes": null, "id": 6079, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6057, "src": "9403:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9386:21:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 6085, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9436:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6081, "name": "ownedTokensCount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5650, "src": "9410:16:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 6083, "indexExpression": { "argumentTypes": null, "id": 6082, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6057, "src": "9427:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "9410:21:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6084, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "add", "nodeType": "MemberAccess", "referencedDeclaration": 4797, "src": "9410:25:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 6086, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9410:28:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9386:52:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6088, "nodeType": "ExpressionStatement", "src": "9386:52:31" } ] }, "documentation": "@dev Internal function to add a token ID to the list of a given address\n@param _to address representing the new owner of the given token ID\n@param _tokenId uint256 ID of the token to be added to the tokens list of the given address", "id": 6090, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "addTokenTo", "nodeType": "FunctionDefinition", "parameters": { "id": 6060, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6057, "name": "_to", "nodeType": "VariableDeclaration", "scope": 6090, "src": "9259:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6056, "name": "address", "nodeType": "ElementaryTypeName", "src": "9259:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6059, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 6090, "src": "9272:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6058, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9272:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "9258:31:31" }, "payable": false, "returnParameters": { "id": 6061, "nodeType": "ParameterList", "parameters": [], "src": "9299:0:31" }, "scope": 6166, "src": "9239:204:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 6124, "nodeType": "Block", "src": "9789:147:31", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 6102, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6099, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "9811:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6098, "name": "ownerOf", "nodeType": "Identifier", "overloadedDeclarations": [ 5712 ], "referencedDeclaration": 5712, "src": "9803:7:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 6100, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9803:17:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 6101, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6092, "src": "9824:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "9803:26:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 6097, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 6576, 6577 ], "referencedDeclaration": 6576, "src": "9795:7:31", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 6103, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9795:35:31", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6104, "nodeType": "ExpressionStatement", "src": "9795:35:31" }, { "expression": { "argumentTypes": null, "id": 6114, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6105, "name": "ownedTokensCount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5650, "src": "9836:16:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 6107, "indexExpression": { "argumentTypes": null, "id": 6106, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6092, "src": "9853:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9836:23:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "31", "id": 6112, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9890:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" } ], "expression": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6108, "name": "ownedTokensCount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5650, "src": "9862:16:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 6110, "indexExpression": { "argumentTypes": null, "id": 6109, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6092, "src": "9879:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "9862:23:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6111, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sub", "nodeType": "MemberAccess", "referencedDeclaration": 4773, "src": "9862:27:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$bound_to$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 6113, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9862:30:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9836:56:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6115, "nodeType": "ExpressionStatement", "src": "9836:56:31" }, { "expression": { "argumentTypes": null, "id": 6122, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "baseExpression": { "argumentTypes": null, "id": 6116, "name": "tokenOwner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5642, "src": "9898:10:31", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 6118, "indexExpression": { "argumentTypes": null, "id": 6117, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "9909:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9898:20:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "hexValue": "30", "id": 6120, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9929:1:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 6119, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9921:7:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": "address" }, "id": 6121, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9921:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "9898:33:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 6123, "nodeType": "ExpressionStatement", "src": "9898:33:31" } ] }, "documentation": "@dev Internal function to remove a token ID from the list of a given address\n@param _from address representing the previous owner of the given token ID\n@param _tokenId uint256 ID of the token to be removed from the tokens list of the given address", "id": 6125, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "removeTokenFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 6095, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6092, "name": "_from", "nodeType": "VariableDeclaration", "scope": 6125, "src": "9747:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6091, "name": "address", "nodeType": "ElementaryTypeName", "src": "9747:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6094, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 6125, "src": "9762:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6093, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9762:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "9746:33:31" }, "payable": false, "returnParameters": { "id": 6096, "nodeType": "ParameterList", "parameters": [], "src": "9789:0:31" }, "scope": 6166, "src": "9722:214:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 6164, "nodeType": "Block", "src": "10589:200:31", "statements": [ { "condition": { "argumentTypes": null, "id": 6141, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "10599:17:31", "subExpression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "expression": { "argumentTypes": null, "id": 6138, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6129, "src": "10600:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 6139, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "isContract", "nodeType": "MemberAccess", "referencedDeclaration": 4642, "src": "10600:14:31", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$bound_to$_t_address_$", "typeString": "function (address) view returns (bool)" } }, "id": 6140, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10600:16:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 6145, "nodeType": "IfStatement", "src": "10595:49:31", "trueBody": { "id": 6144, "nodeType": "Block", "src": "10618:26:31", "statements": [ { "expression": { "argumentTypes": null, "hexValue": "74727565", "id": 6142, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "10633:4:31", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 6137, "id": 6143, "nodeType": "Return", "src": "10626:11:31" } ] } }, { "assignments": [ 6147 ], "declarations": [ { "constant": false, "id": 6147, "name": "retval", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10649:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 6146, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "10649:6:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": null, "visibility": "internal" } ], "id": 6158, "initialValue": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 6152, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6573, "src": "10709:3:31", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 6153, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "10709:10:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 6154, "name": "_from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6127, "src": "10721:5:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "argumentTypes": null, "id": 6155, "name": "_tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6131, "src": "10728:8:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 6156, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6133, "src": "10738:5:31", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 6149, "name": "_to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6129, "src": "10680:3:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 6148, "name": "ERC721Receiver", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6185, "src": "10665:14:31", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721Receiver_$6185_$", "typeString": "type(contract ERC721Receiver)" } }, "id": 6150, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10665:19:31", "typeDescriptions": { "typeIdentifier": "t_contract$_ERC721Receiver_$6185", "typeString": "contract ERC721Receiver" } }, "id": 6151, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "onERC721Received", "nodeType": "MemberAccess", "referencedDeclaration": 6184, "src": "10665:36:31", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bytes4_$", "typeString": "function (address,address,uint256,bytes memory) external returns (bytes4)" } }, "id": 6157, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10665:79:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "VariableDeclarationStatement", "src": "10649:95:31" }, { "expression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "id": 6161, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 6159, "name": "retval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6147, "src": "10758:6:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "argumentTypes": null, "id": 6160, "name": "ERC721_RECEIVED", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5638, "src": "10768:15:31", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "src": "10758:25:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 6162, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "10757:27:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 6137, "id": 6163, "nodeType": "Return", "src": "10750:34:31" } ] }, "documentation": "@dev Internal function to invoke `onERC721Received` on a target address\nThe call is not executed if the target address is not a contract\n@param _from address representing the previous owner of the given token ID\n@param _to target address that will receive the tokens\n@param _tokenId uint256 ID of the token to be transferred\n@param _data bytes optional data to send along with the call\n@return whether the call correctly returned the expected magic value", "id": 6165, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "checkAndCallSafeTransfer", "nodeType": "FunctionDefinition", "parameters": { "id": 6134, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6127, "name": "_from", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10481:13:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6126, "name": "address", "nodeType": "ElementaryTypeName", "src": "10481:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6129, "name": "_to", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10500:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 6128, "name": "address", "nodeType": "ElementaryTypeName", "src": "10500:7:31", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6131, "name": "_tokenId", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10517:16:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6130, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10517:7:31", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 6133, "name": "_data", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10539:11:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6132, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "10539:5:31", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "10475:79:31" }, "payable": false, "returnParameters": { "id": 6137, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6136, "name": "", "nodeType": "VariableDeclaration", "scope": 6165, "src": "10581:4:31", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 6135, "name": "bool", "nodeType": "ElementaryTypeName", "src": "10581:4:31", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "10580:6:31" }, "scope": 6166, "src": "10442:347:31", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" } ], "scope": 6167, "src": "363:10428:31" } ], "src": "0:10792:31" }, "compiler": { "name": "solc", "version": "0.4.24+commit.e67f0147.Emscripten.clang" }, "networks": {}, "schemaVersion": "2.0.1", "updatedAt": "2018-10-31T09:02:05.456Z" }