{
  "fileName": "IERC721Receiver.sol",
  "contractName": "IERC721Receiver",
  "source": "pragma solidity ^0.6.0;\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 */\ninterface 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 {IERC721-safeTransferFrom}. 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 calldata data)\n    external returns (bytes4);\n}\n",
  "sourcePath": "contracts/token/ERC721/IERC721Receiver.sol",
  "sourceMap": "",
  "deployedSourceMap": "",
  "abi": [
    {
      "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"
        }
      ],
      "stateMutability": "nonpayable",
      "type": "function"
    }
  ],
  "ast": {
    "absolutePath": "contracts/token/ERC721/IERC721Receiver.sol",
    "exportedSymbols": {
      "IERC721Receiver": [
        12554
      ]
    },
    "id": 12555,
    "nodeType": "SourceUnit",
    "nodes": [
      {
        "id": 12538,
        "literals": [
          "solidity",
          "^",
          "0.6",
          ".0"
        ],
        "nodeType": "PragmaDirective",
        "src": "0:23:93"
      },
      {
        "abstract": false,
        "baseContracts": [],
        "contractDependencies": [],
        "contractKind": "interface",
        "documentation": {
          "id": 12539,
          "nodeType": "StructuredDocumentation",
          "src": "25:152:93",
          "text": "@title ERC721 token receiver interface\n@dev Interface for any contract that wants to support safeTransfers\nfrom ERC721 asset contracts."
        },
        "fullyImplemented": false,
        "id": 12554,
        "linearizedBaseContracts": [
          12554
        ],
        "name": "IERC721Receiver",
        "nodeType": "ContractDefinition",
        "nodes": [
          {
            "body": null,
            "documentation": {
              "id": 12540,
              "nodeType": "StructuredDocumentation",
              "src": "210:865:93",
              "text": "@notice Handle the receipt of an NFT\n@dev The ERC721 smart contract calls this function on the recipient\nafter a {IERC721-safeTransferFrom}. 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)\"))`"
            },
            "functionSelector": "150b7a02",
            "id": 12553,
            "implemented": false,
            "kind": "function",
            "modifiers": [],
            "name": "onERC721Received",
            "nodeType": "FunctionDefinition",
            "overrides": null,
            "parameters": {
              "id": 12549,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 12542,
                  "mutability": "mutable",
                  "name": "operator",
                  "nodeType": "VariableDeclaration",
                  "overrides": null,
                  "scope": 12553,
                  "src": "1106:16:93",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 12541,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "1106:7:93",
                    "stateMutability": "nonpayable",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 12544,
                  "mutability": "mutable",
                  "name": "from",
                  "nodeType": "VariableDeclaration",
                  "overrides": null,
                  "scope": 12553,
                  "src": "1124:12:93",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 12543,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "1124:7:93",
                    "stateMutability": "nonpayable",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 12546,
                  "mutability": "mutable",
                  "name": "tokenId",
                  "nodeType": "VariableDeclaration",
                  "overrides": null,
                  "scope": 12553,
                  "src": "1138:15:93",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 12545,
                    "name": "uint256",
                    "nodeType": "ElementaryTypeName",
                    "src": "1138:7:93",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 12548,
                  "mutability": "mutable",
                  "name": "data",
                  "nodeType": "VariableDeclaration",
                  "overrides": null,
                  "scope": 12553,
                  "src": "1155:19:93",
                  "stateVariable": false,
                  "storageLocation": "calldata",
                  "typeDescriptions": {
                    "typeIdentifier": "t_bytes_calldata_ptr",
                    "typeString": "bytes"
                  },
                  "typeName": {
                    "id": 12547,
                    "name": "bytes",
                    "nodeType": "ElementaryTypeName",
                    "src": "1155:5:93",
                    "typeDescriptions": {
                      "typeIdentifier": "t_bytes_storage_ptr",
                      "typeString": "bytes"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "1105:70:93"
            },
            "returnParameters": {
              "id": 12552,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 12551,
                  "mutability": "mutable",
                  "name": "",
                  "nodeType": "VariableDeclaration",
                  "overrides": null,
                  "scope": 12553,
                  "src": "1198:6:93",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_bytes4",
                    "typeString": "bytes4"
                  },
                  "typeName": {
                    "id": 12550,
                    "name": "bytes4",
                    "nodeType": "ElementaryTypeName",
                    "src": "1198:6:93",
                    "typeDescriptions": {
                      "typeIdentifier": "t_bytes4",
                      "typeString": "bytes4"
                    }
                  },
                  "value": null,
                  "visibility": "internal"
                }
              ],
              "src": "1197:8:93"
            },
            "scope": 12554,
            "src": "1080:126:93",
            "stateMutability": "nonpayable",
            "virtual": false,
            "visibility": "external"
          }
        ],
        "scope": 12555,
        "src": "178:1030:93"
      }
    ],
    "src": "0:1209:93"
  },
  "bytecode": "0x",
  "deployedBytecode": "0x",
  "compiler": {
    "name": "solc",
    "version": "0.6.7+commit.b8d736ae.Emscripten.clang",
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "evmVersion": "petersburg"
  }
}