{ "contractName": "IERC721Receiver", "abi": [ { "constant": false, "inputs": [ { "internalType": "address", "name": "operator", "type": "address" }, { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" }, { "internalType": "bytes", "name": "data", "type": "bytes" } ], "name": "onERC721Received", "outputs": [ { "internalType": "bytes4", "name": "", "type": "bytes4" } ], "payable": false, "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.5.17+commit.d19bba13\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":false,\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"onERC721Received\",\"outputs\":[{\"internalType\":\"bytes4\",\"name\":\"\",\"type\":\"bytes4\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Interface for any contract that wants to support safeTransfers from ERC721 asset contracts.\",\"methods\":{\"onERC721Received(address,address,uint256,bytes)\":{\"details\":\"The ERC721 smart contract calls this function on the recipient after a `safeTransfer`. This function MUST return the function selector, otherwise the caller will revert the transaction. The selector to be returned can be obtained as `this.onERC721Received.selector`. This function MAY throw to revert and reject the transfer. Note: the ERC721 contract address is always the message sender.\",\"params\":{\"data\":\"Additional data with no specified format\",\"from\":\"The address which previously owned the token\",\"operator\":\"The address which called `safeTransferFrom` function\",\"tokenId\":\"The NFT identifier which is being transferred\"},\"return\":\"bytes4 `bytes4(keccak256(\\\"onERC721Received(address,address,uint256,bytes)\\\"))`\"}},\"title\":\"ERC721 token receiver interface\"},\"userdoc\":{\"methods\":{\"onERC721Received(address,address,uint256,bytes)\":{\"notice\":\"Handle the receipt of an NFT\"}}}},\"settings\":{\"compilationTarget\":{\"openzeppelin-solidity/contracts/token/ERC721/IERC721Receiver.sol\":\"IERC721Receiver\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"openzeppelin-solidity/contracts/token/ERC721/IERC721Receiver.sol\":{\"keccak256\":\"0xadbfb7028fb0f851dc848a48b9e54e7c89ffd2c2edc12fa4ba9bb383dfaa83d9\",\"urls\":[\"bzz-raw://90dceab42713246639100b87d6650037d68e4a2ab2dd4b5768c3ed35d6b3a4a0\",\"dweb:/ipfs/QmQ42UW5nchMoYP9bU9F1AJga5chG8j92fCPkURpiDKsCu\"]}},\"version\":1}", "bytecode": "0x", "deployedBytecode": "0x", "sourceMap": "", "deployedSourceMap": "", "source": "pragma solidity ^0.5.0;\n\n/**\n * @title ERC721 token receiver interface\n * @dev Interface for any contract that wants to support safeTransfers\n * from ERC721 asset contracts.\n */\ncontract IERC721Receiver {\n /**\n * @notice Handle the receipt of an NFT\n * @dev The ERC721 smart contract calls this function on the recipient\n * after a `safeTransfer`. This function MUST return the function selector,\n * otherwise the caller will revert the transaction. The selector to be\n * returned can be obtained as `this.onERC721Received.selector`. This\n * function MAY throw to revert and reject the transfer.\n * Note: the ERC721 contract address is always the message sender.\n * @param operator The address which called `safeTransferFrom` function\n * @param from The address which previously owned the token\n * @param tokenId The NFT identifier which is being transferred\n * @param data Additional data with no specified format\n * @return bytes4 `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`\n */\n function onERC721Received(address operator, address from, uint256 tokenId, bytes memory data)\n public returns (bytes4);\n}\n", "sourcePath": "openzeppelin-solidity/contracts/token/ERC721/IERC721Receiver.sol", "ast": { "absolutePath": "openzeppelin-solidity/contracts/token/ERC721/IERC721Receiver.sol", "exportedSymbols": { "IERC721Receiver": [ 18326 ] }, "id": 18327, "nodeType": "SourceUnit", "nodes": [ { "id": 18312, "literals": [ "solidity", "^", "0.5", ".0" ], "nodeType": "PragmaDirective", "src": "0:23:69" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": "@title ERC721 token receiver interface\n@dev Interface for any contract that wants to support safeTransfers\nfrom ERC721 asset contracts.", "fullyImplemented": false, "id": 18326, "linearizedBaseContracts": [ 18326 ], "name": "IERC721Receiver", "nodeType": "ContractDefinition", "nodes": [ { "body": null, "documentation": "@notice Handle the receipt of an NFT\n@dev The ERC721 smart contract calls this function on the recipient\nafter a `safeTransfer`. This function MUST return the function selector,\notherwise the caller will revert the transaction. The selector to be\nreturned can be obtained as `this.onERC721Received.selector`. This\nfunction MAY throw to revert and reject the transfer.\nNote: the ERC721 contract address is always the message sender.\n@param operator The address which called `safeTransferFrom` function\n@param from The address which previously owned the token\n@param tokenId The NFT identifier which is being transferred\n@param data Additional data with no specified format\n@return bytes4 `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`", "id": 18325, "implemented": false, "kind": "function", "modifiers": [], "name": "onERC721Received", "nodeType": "FunctionDefinition", "parameters": { "id": 18321, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 18314, "name": "operator", "nodeType": "VariableDeclaration", "scope": 18325, "src": "1093:16:69", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 18313, "name": "address", "nodeType": "ElementaryTypeName", "src": "1093:7:69", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 18316, "name": "from", "nodeType": "VariableDeclaration", "scope": 18325, "src": "1111:12:69", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 18315, "name": "address", "nodeType": "ElementaryTypeName", "src": "1111:7:69", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 18318, "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 18325, "src": "1125:15:69", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 18317, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1125:7:69", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 18320, "name": "data", "nodeType": "VariableDeclaration", "scope": 18325, "src": "1142:17:69", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 18319, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1142:5:69", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "1092:68:69" }, "returnParameters": { "id": 18324, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 18323, "name": "", "nodeType": "VariableDeclaration", "scope": 18325, "src": "1181:6:69", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 18322, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "1181:6:69", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "value": null, "visibility": "internal" } ], "src": "1180:8:69" }, "scope": 18326, "src": "1067:122:69", "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" } ], "scope": 18327, "src": "178:1013:69" } ], "src": "0:1192:69" }, "legacyAST": { "attributes": { "absolutePath": "openzeppelin-solidity/contracts/token/ERC721/IERC721Receiver.sol", "exportedSymbols": { "IERC721Receiver": [ 18326 ] } }, "children": [ { "attributes": { "literals": [ "solidity", "^", "0.5", ".0" ] }, "id": 18312, "name": "PragmaDirective", "src": "0:23:69" }, { "attributes": { "baseContracts": [ null ], "contractDependencies": [ null ], "contractKind": "contract", "documentation": "@title ERC721 token receiver interface\n@dev Interface for any contract that wants to support safeTransfers\nfrom ERC721 asset contracts.", "fullyImplemented": false, "linearizedBaseContracts": [ 18326 ], "name": "IERC721Receiver", "scope": 18327 }, "children": [ { "attributes": { "body": null, "documentation": "@notice Handle the receipt of an NFT\n@dev The ERC721 smart contract calls this function on the recipient\nafter a `safeTransfer`. This function MUST return the function selector,\notherwise the caller will revert the transaction. The selector to be\nreturned can be obtained as `this.onERC721Received.selector`. This\nfunction MAY throw to revert and reject the transfer.\nNote: the ERC721 contract address is always the message sender.\n@param operator The address which called `safeTransferFrom` function\n@param from The address which previously owned the token\n@param tokenId The NFT identifier which is being transferred\n@param data Additional data with no specified format\n@return bytes4 `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`", "implemented": false, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "onERC721Received", "scope": 18326, "stateMutability": "nonpayable", "superFunction": null, "visibility": "public" }, "children": [ { "children": [ { "attributes": { "constant": false, "name": "operator", "scope": 18325, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 18313, "name": "ElementaryTypeName", "src": "1093:7:69" } ], "id": 18314, "name": "VariableDeclaration", "src": "1093:16:69" }, { "attributes": { "constant": false, "name": "from", "scope": 18325, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 18315, "name": "ElementaryTypeName", "src": "1111:7:69" } ], "id": 18316, "name": "VariableDeclaration", "src": "1111:12:69" }, { "attributes": { "constant": false, "name": "tokenId", "scope": 18325, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 18317, "name": "ElementaryTypeName", "src": "1125:7:69" } ], "id": 18318, "name": "VariableDeclaration", "src": "1125:15:69" }, { "attributes": { "constant": false, "name": "data", "scope": 18325, "stateVariable": false, "storageLocation": "memory", "type": "bytes", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "bytes", "type": "bytes" }, "id": 18319, "name": "ElementaryTypeName", "src": "1142:5:69" } ], "id": 18320, "name": "VariableDeclaration", "src": "1142:17:69" } ], "id": 18321, "name": "ParameterList", "src": "1092:68:69" }, { "children": [ { "attributes": { "constant": false, "name": "", "scope": 18325, "stateVariable": false, "storageLocation": "default", "type": "bytes4", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "bytes4", "type": "bytes4" }, "id": 18322, "name": "ElementaryTypeName", "src": "1181:6:69" } ], "id": 18323, "name": "VariableDeclaration", "src": "1181:6:69" } ], "id": 18324, "name": "ParameterList", "src": "1180:8:69" } ], "id": 18325, "name": "FunctionDefinition", "src": "1067:122:69" } ], "id": 18326, "name": "ContractDefinition", "src": "178:1013:69" } ], "id": 18327, "name": "SourceUnit", "src": "0:1192:69" }, "compiler": { "name": "solc", "version": "0.5.17+commit.d19bba13.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.3.4", "updatedAt": "2021-11-23T11:52:09.496Z", "devdoc": { "details": "Interface for any contract that wants to support safeTransfers from ERC721 asset contracts.", "methods": { "onERC721Received(address,address,uint256,bytes)": { "details": "The ERC721 smart contract calls this function on the recipient after a `safeTransfer`. This function MUST return the function selector, otherwise the caller will revert the transaction. The selector to be returned can be obtained as `this.onERC721Received.selector`. This function MAY throw to revert and reject the transfer. Note: the ERC721 contract address is always the message sender.", "params": { "data": "Additional data with no specified format", "from": "The address which previously owned the token", "operator": "The address which called `safeTransferFrom` function", "tokenId": "The NFT identifier which is being transferred" }, "return": "bytes4 `bytes4(keccak256(\"onERC721Received(address,address,uint256,bytes)\"))`" } }, "title": "ERC721 token receiver interface" }, "userdoc": { "methods": { "onERC721Received(address,address,uint256,bytes)": { "notice": "Handle the receipt of an NFT" } } } }