{ "contractName": "IERC721", "abi": [ { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "owner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "approved", "type": "address" }, { "indexed": true, "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "Approval", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "owner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "operator", "type": "address" }, { "indexed": false, "internalType": "bool", "name": "approved", "type": "bool" } ], "name": "ApprovalForAll", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "from", "type": "address" }, { "indexed": true, "internalType": "address", "name": "to", "type": "address" }, { "indexed": true, "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "inputs": [ { "internalType": "bytes4", "name": "interfaceId", "type": "bytes4" } ], "name": "supportsInterface", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "owner", "type": "address" } ], "name": "balanceOf", "outputs": [ { "internalType": "uint256", "name": "balance", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "ownerOf", "outputs": [ { "internalType": "address", "name": "owner", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "transferFrom", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "approve", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "getApproved", "outputs": [ { "internalType": "address", "name": "operator", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "operator", "type": "address" }, { "internalType": "bool", "name": "_approved", "type": "bool" } ], "name": "setApprovalForAll", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "owner", "type": "address" }, { "internalType": "address", "name": "operator", "type": "address" } ], "name": "isApprovedForAll", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "safeTransferFrom", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "tokenId", "type": "uint256" }, { "internalType": "bytes", "name": "data", "type": "bytes" } ], "name": "safeTransferFrom", "outputs": [], "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.6.12+commit.27d51765\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"approved\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"ApprovalForAll\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"balance\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"_approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Required interface of an ERC721 compliant contract.\",\"events\":{\"Approval(address,address,uint256)\":{\"details\":\"Emitted when `owner` enables `approved` to manage the `tokenId` token.\"},\"ApprovalForAll(address,address,bool)\":{\"details\":\"Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\"},\"Transfer(address,address,uint256)\":{\"details\":\"Emitted when `tokenId` token is transferred from `from` to `to`.\"}},\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"Gives permission to `to` to transfer `tokenId` token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - `tokenId` must exist. Emits an {Approval} event.\"},\"balanceOf(address)\":{\"details\":\"Returns the number of tokens in ``owner``'s account.\"},\"getApproved(uint256)\":{\"details\":\"Returns the account approved for `tokenId` token. Requirements: - `tokenId` must exist.\"},\"isApprovedForAll(address,address)\":{\"details\":\"Returns if the `operator` is allowed to manage all of the assets of `owner`. See {setApprovalForAll}\"},\"ownerOf(uint256)\":{\"details\":\"Returns the owner of the `tokenId` token. Requirements: - `tokenId` must exist.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. Emits a {Transfer} event.\"},\"safeTransferFrom(address,address,uint256,bytes)\":{\"details\":\"Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. Emits a {Transfer} event.\"},\"setApprovalForAll(address,bool)\":{\"details\":\"Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the caller. Emits an {ApprovalForAll} event.\"},\"supportsInterface(bytes4)\":{\"details\":\"Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"Transfers `tokenId` token from `from` to `to`. WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/contracts/token/ERC721/IERC721.sol\":\"IERC721\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/introspection/IERC165.sol\":{\"keccak256\":\"0xf70bc25d981e4ec9673a995ad2995d5d493ea188d3d8f388bba9c227ce09fb82\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://bd970f51e3a77790c2f02b5b1759827c3b897c3d98c407b3631e8af32e3dc93c\",\"dweb:/ipfs/QmPF85Amgbqjk3SNZKsPCsqCw8JfwYEPMnnhvMJUyX58je\"]},\"@openzeppelin/contracts/token/ERC721/IERC721.sol\":{\"keccak256\":\"0x2d99a0deb6648c34fbc66d6ac4a2d64798d7a5321b45624f6736fadc63da1962\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://2dcdce5ede1e5e650d174ec0b35be7d47b6a50f30bc895ef0d9e59fb75052e45\",\"dweb:/ipfs/QmQ2XFsDLTYqfEdw7pYzHiGtFRY11yQm4b6ynYgKqDxeB8\"]}},\"version\":1}", "bytecode": "0x", "deployedBytecode": "0x", "immutableReferences": {}, "sourceMap": "", "deployedSourceMap": "", "source": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.6.2 <0.8.0;\n\nimport \"../../introspection/IERC165.sol\";\n\n/**\n * @dev Required interface of an ERC721 compliant contract.\n */\ninterface IERC721 is IERC165 {\n /**\n * @dev Emitted when `tokenId` token is transferred from `from` to `to`.\n */\n event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.\n */\n event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);\n\n /**\n * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.\n */\n event ApprovalForAll(address indexed owner, address indexed operator, bool approved);\n\n /**\n * @dev Returns the number of tokens in ``owner``'s account.\n */\n function balanceOf(address owner) external view returns (uint256 balance);\n\n /**\n * @dev Returns the owner of the `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function ownerOf(uint256 tokenId) external view returns (address owner);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n * are aware of the ERC721 protocol to prevent tokens from being forever locked.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(address from, address to, uint256 tokenId) external;\n\n /**\n * @dev Transfers `tokenId` token from `from` to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(address from, address to, uint256 tokenId) external;\n\n /**\n * @dev Gives permission to `to` to transfer `tokenId` token to another account.\n * The approval is cleared when the token is transferred.\n *\n * Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n *\n * Requirements:\n *\n * - The caller must own the token or be an approved operator.\n * - `tokenId` must exist.\n *\n * Emits an {Approval} event.\n */\n function approve(address to, uint256 tokenId) external;\n\n /**\n * @dev Returns the account approved for `tokenId` token.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function getApproved(uint256 tokenId) external view returns (address operator);\n\n /**\n * @dev Approve or remove `operator` as an operator for the caller.\n * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n *\n * Requirements:\n *\n * - The `operator` cannot be the caller.\n *\n * Emits an {ApprovalForAll} event.\n */\n function setApprovalForAll(address operator, bool _approved) external;\n\n /**\n * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n *\n * See {setApprovalForAll}\n */\n function isApprovedForAll(address owner, address operator) external view returns (bool);\n\n /**\n * @dev Safely transfers `tokenId` token from `from` to `to`.\n *\n * Requirements:\n *\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n * - `tokenId` token must exist and be owned by `from`.\n * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n *\n * Emits a {Transfer} event.\n */\n function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;\n}\n", "sourcePath": "@openzeppelin/contracts/token/ERC721/IERC721.sol", "ast": { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721.sol", "exportedSymbols": { "IERC721": [ 4446 ] }, "id": 4447, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 4332, "literals": [ "solidity", ">=", "0.6", ".2", "<", "0.8", ".0" ], "nodeType": "PragmaDirective", "src": "33:31:23" }, { "absolutePath": "@openzeppelin/contracts/introspection/IERC165.sol", "file": "../../introspection/IERC165.sol", "id": 4333, "nodeType": "ImportDirective", "scope": 4447, "sourceUnit": 583, "src": "66:41:23", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 4335, "name": "IERC165", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 582, "src": "198:7:23", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC165_$582", "typeString": "contract IERC165" } }, "id": 4336, "nodeType": "InheritanceSpecifier", "src": "198:7:23" } ], "contractDependencies": [ 582 ], "contractKind": "interface", "documentation": { "id": 4334, "nodeType": "StructuredDocumentation", "src": "109:67:23", "text": " @dev Required interface of an ERC721 compliant contract." }, "fullyImplemented": false, "id": 4446, "linearizedBaseContracts": [ 4446, 582 ], "name": "IERC721", "nodeType": "ContractDefinition", "nodes": [ { "anonymous": false, "documentation": { "id": 4337, "nodeType": "StructuredDocumentation", "src": "212:88:23", "text": " @dev Emitted when `tokenId` token is transferred from `from` to `to`." }, "id": 4345, "name": "Transfer", "nodeType": "EventDefinition", "parameters": { "id": 4344, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4339, "indexed": true, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4345, "src": "320:20:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4338, "name": "address", "nodeType": "ElementaryTypeName", "src": "320:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4341, "indexed": true, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4345, "src": "342:18:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4340, "name": "address", "nodeType": "ElementaryTypeName", "src": "342:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4343, "indexed": true, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4345, "src": "362:23:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4342, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "362:7:23", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "319:67:23" }, "src": "305:82:23" }, { "anonymous": false, "documentation": { "id": 4346, "nodeType": "StructuredDocumentation", "src": "393:94:23", "text": " @dev Emitted when `owner` enables `approved` to manage the `tokenId` token." }, "id": 4354, "name": "Approval", "nodeType": "EventDefinition", "parameters": { "id": 4353, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4348, "indexed": true, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4354, "src": "507:21:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4347, "name": "address", "nodeType": "ElementaryTypeName", "src": "507:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4350, "indexed": true, "mutability": "mutable", "name": "approved", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4354, "src": "530:24:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4349, "name": "address", "nodeType": "ElementaryTypeName", "src": "530:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4352, "indexed": true, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4354, "src": "556:23:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4351, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "556:7:23", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "506:74:23" }, "src": "492:89:23" }, { "anonymous": false, "documentation": { "id": 4355, "nodeType": "StructuredDocumentation", "src": "587:117:23", "text": " @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets." }, "id": 4363, "name": "ApprovalForAll", "nodeType": "EventDefinition", "parameters": { "id": 4362, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4357, "indexed": true, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4363, "src": "730:21:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4356, "name": "address", "nodeType": "ElementaryTypeName", "src": "730:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4359, "indexed": true, "mutability": "mutable", "name": "operator", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4363, "src": "753:24:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4358, "name": "address", "nodeType": "ElementaryTypeName", "src": "753:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4361, "indexed": false, "mutability": "mutable", "name": "approved", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4363, "src": "779:13:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4360, "name": "bool", "nodeType": "ElementaryTypeName", "src": "779:4:23", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "729:64:23" }, "src": "709:85:23" }, { "body": null, "documentation": { "id": 4364, "nodeType": "StructuredDocumentation", "src": "800:76:23", "text": " @dev Returns the number of tokens in ``owner``'s account." }, "functionSelector": "70a08231", "id": 4371, "implemented": false, "kind": "function", "modifiers": [], "name": "balanceOf", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 4367, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4366, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4371, "src": "900:13:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4365, "name": "address", "nodeType": "ElementaryTypeName", "src": "900:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "899:15:23" }, "returnParameters": { "id": 4370, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4369, "mutability": "mutable", "name": "balance", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4371, "src": "938:15:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4368, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "938:7:23", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "937:17:23" }, "scope": 4446, "src": "881:74:23", "stateMutability": "view", "virtual": false, "visibility": "external" }, { "body": null, "documentation": { "id": 4372, "nodeType": "StructuredDocumentation", "src": "961:131:23", "text": " @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist." }, "functionSelector": "6352211e", "id": 4379, "implemented": false, "kind": "function", "modifiers": [], "name": "ownerOf", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 4375, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4374, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4379, "src": "1114:15:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4373, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1114:7:23", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1113:17:23" }, "returnParameters": { "id": 4378, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4377, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4379, "src": "1154:13:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4376, "name": "address", "nodeType": "ElementaryTypeName", "src": "1154:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "1153:15:23" }, "scope": 4446, "src": "1097:72:23", "stateMutability": "view", "virtual": false, "visibility": "external" }, { "body": null, "documentation": { "id": 4380, "nodeType": "StructuredDocumentation", "src": "1175:690:23", "text": " @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n Emits a {Transfer} event." }, "functionSelector": "42842e0e", "id": 4389, "implemented": false, "kind": "function", "modifiers": [], "name": "safeTransferFrom", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 4387, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4382, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4389, "src": "1896:12:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4381, "name": "address", "nodeType": "ElementaryTypeName", "src": "1896:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4384, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4389, "src": "1910:10:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4383, "name": "address", "nodeType": "ElementaryTypeName", "src": "1910:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4386, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4389, "src": "1922:15:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4385, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1922:7:23", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "1895:43:23" }, "returnParameters": { "id": 4388, "nodeType": "ParameterList", "parameters": [], "src": "1947:0:23" }, "scope": 4446, "src": "1870:78:23", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "body": null, "documentation": { "id": 4390, "nodeType": "StructuredDocumentation", "src": "1954:504:23", "text": " @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event." }, "functionSelector": "23b872dd", "id": 4399, "implemented": false, "kind": "function", "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 4397, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4392, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4399, "src": "2485:12:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4391, "name": "address", "nodeType": "ElementaryTypeName", "src": "2485:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4394, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4399, "src": "2499:10:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4393, "name": "address", "nodeType": "ElementaryTypeName", "src": "2499:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4396, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4399, "src": "2511:15:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4395, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2511:7:23", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2484:43:23" }, "returnParameters": { "id": 4398, "nodeType": "ParameterList", "parameters": [], "src": "2536:0:23" }, "scope": 4446, "src": "2463:74:23", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "body": null, "documentation": { "id": 4400, "nodeType": "StructuredDocumentation", "src": "2543:452:23", "text": " @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event." }, "functionSelector": "095ea7b3", "id": 4407, "implemented": false, "kind": "function", "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 4405, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4402, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4407, "src": "3017:10:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4401, "name": "address", "nodeType": "ElementaryTypeName", "src": "3017:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4404, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4407, "src": "3029:15:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4403, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3029:7:23", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3016:29:23" }, "returnParameters": { "id": 4406, "nodeType": "ParameterList", "parameters": [], "src": "3054:0:23" }, "scope": 4446, "src": "3000:55:23", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "body": null, "documentation": { "id": 4408, "nodeType": "StructuredDocumentation", "src": "3061:139:23", "text": " @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist." }, "functionSelector": "081812fc", "id": 4415, "implemented": false, "kind": "function", "modifiers": [], "name": "getApproved", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 4411, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4410, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4415, "src": "3226:15:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4409, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3226:7:23", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3225:17:23" }, "returnParameters": { "id": 4414, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4413, "mutability": "mutable", "name": "operator", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4415, "src": "3266:16:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4412, "name": "address", "nodeType": "ElementaryTypeName", "src": "3266:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "3265:18:23" }, "scope": 4446, "src": "3205:79:23", "stateMutability": "view", "virtual": false, "visibility": "external" }, { "body": null, "documentation": { "id": 4416, "nodeType": "StructuredDocumentation", "src": "3290:309:23", "text": " @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the caller.\n Emits an {ApprovalForAll} event." }, "functionSelector": "a22cb465", "id": 4423, "implemented": false, "kind": "function", "modifiers": [], "name": "setApprovalForAll", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 4421, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4418, "mutability": "mutable", "name": "operator", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4423, "src": "3631:16:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4417, "name": "address", "nodeType": "ElementaryTypeName", "src": "3631:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4420, "mutability": "mutable", "name": "_approved", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4423, "src": "3649:14:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4419, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3649:4:23", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3630:34:23" }, "returnParameters": { "id": 4422, "nodeType": "ParameterList", "parameters": [], "src": "3673:0:23" }, "scope": 4446, "src": "3604:70:23", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "body": null, "documentation": { "id": 4424, "nodeType": "StructuredDocumentation", "src": "3680:138:23", "text": " @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n See {setApprovalForAll}" }, "functionSelector": "e985e9c5", "id": 4433, "implemented": false, "kind": "function", "modifiers": [], "name": "isApprovedForAll", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 4429, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4426, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4433, "src": "3849:13:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4425, "name": "address", "nodeType": "ElementaryTypeName", "src": "3849:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4428, "mutability": "mutable", "name": "operator", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4433, "src": "3864:16:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4427, "name": "address", "nodeType": "ElementaryTypeName", "src": "3864:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "3848:33:23" }, "returnParameters": { "id": 4432, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4431, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4433, "src": "3905:4:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 4430, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3905:4:23", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "value": null, "visibility": "internal" } ], "src": "3904:6:23" }, "scope": 4446, "src": "3823:88:23", "stateMutability": "view", "virtual": false, "visibility": "external" }, { "body": null, "documentation": { "id": 4434, "nodeType": "StructuredDocumentation", "src": "3917:568:23", "text": " @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n Emits a {Transfer} event." }, "functionSelector": "b88d4fde", "id": 4445, "implemented": false, "kind": "function", "modifiers": [], "name": "safeTransferFrom", "nodeType": "FunctionDefinition", "overrides": null, "parameters": { "id": 4443, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4436, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4445, "src": "4516:12:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4435, "name": "address", "nodeType": "ElementaryTypeName", "src": "4516:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4438, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4445, "src": "4530:10:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 4437, "name": "address", "nodeType": "ElementaryTypeName", "src": "4530:7:23", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4440, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4445, "src": "4542:15:23", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4439, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4542:7:23", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4442, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4445, "src": "4559:19:23", "stateVariable": false, "storageLocation": "calldata", "typeDescriptions": { "typeIdentifier": "t_bytes_calldata_ptr", "typeString": "bytes" }, "typeName": { "id": 4441, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4559:5:23", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "4515:64:23" }, "returnParameters": { "id": 4444, "nodeType": "ParameterList", "parameters": [], "src": "4588:0:23" }, "scope": 4446, "src": "4490:99:23", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" } ], "scope": 4447, "src": "177:4414:23" } ], "src": "33:4559:23" }, "legacyAST": { "attributes": { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721.sol", "exportedSymbols": { "IERC721": [ 4446 ] }, "license": "MIT" }, "children": [ { "attributes": { "literals": [ "solidity", ">=", "0.6", ".2", "<", "0.8", ".0" ] }, "id": 4332, "name": "PragmaDirective", "src": "33:31:23" }, { "attributes": { "SourceUnit": 583, "absolutePath": "@openzeppelin/contracts/introspection/IERC165.sol", "file": "../../introspection/IERC165.sol", "scope": 4447, "symbolAliases": [ null ], "unitAlias": "" }, "id": 4333, "name": "ImportDirective", "src": "66:41:23" }, { "attributes": { "abstract": false, "contractDependencies": [ 582 ], "contractKind": "interface", "fullyImplemented": false, "linearizedBaseContracts": [ 4446, 582 ], "name": "IERC721", "scope": 4447 }, "children": [ { "attributes": { "text": " @dev Required interface of an ERC721 compliant contract." }, "id": 4334, "name": "StructuredDocumentation", "src": "109:67:23" }, { "attributes": { "arguments": null }, "children": [ { "attributes": { "contractScope": null, "name": "IERC165", "referencedDeclaration": 582, "type": "contract IERC165" }, "id": 4335, "name": "UserDefinedTypeName", "src": "198:7:23" } ], "id": 4336, "name": "InheritanceSpecifier", "src": "198:7:23" }, { "attributes": { "anonymous": false, "name": "Transfer" }, "children": [ { "attributes": { "text": " @dev Emitted when `tokenId` token is transferred from `from` to `to`." }, "id": 4337, "name": "StructuredDocumentation", "src": "212:88:23" }, { "children": [ { "attributes": { "constant": false, "indexed": true, "mutability": "mutable", "name": "from", "overrides": null, "scope": 4345, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4338, "name": "ElementaryTypeName", "src": "320:7:23" } ], "id": 4339, "name": "VariableDeclaration", "src": "320:20:23" }, { "attributes": { "constant": false, "indexed": true, "mutability": "mutable", "name": "to", "overrides": null, "scope": 4345, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4340, "name": "ElementaryTypeName", "src": "342:7:23" } ], "id": 4341, "name": "VariableDeclaration", "src": "342:18:23" }, { "attributes": { "constant": false, "indexed": true, "mutability": "mutable", "name": "tokenId", "overrides": null, "scope": 4345, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 4342, "name": "ElementaryTypeName", "src": "362:7:23" } ], "id": 4343, "name": "VariableDeclaration", "src": "362:23:23" } ], "id": 4344, "name": "ParameterList", "src": "319:67:23" } ], "id": 4345, "name": "EventDefinition", "src": "305:82:23" }, { "attributes": { "anonymous": false, "name": "Approval" }, "children": [ { "attributes": { "text": " @dev Emitted when `owner` enables `approved` to manage the `tokenId` token." }, "id": 4346, "name": "StructuredDocumentation", "src": "393:94:23" }, { "children": [ { "attributes": { "constant": false, "indexed": true, "mutability": "mutable", "name": "owner", "overrides": null, "scope": 4354, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4347, "name": "ElementaryTypeName", "src": "507:7:23" } ], "id": 4348, "name": "VariableDeclaration", "src": "507:21:23" }, { "attributes": { "constant": false, "indexed": true, "mutability": "mutable", "name": "approved", "overrides": null, "scope": 4354, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4349, "name": "ElementaryTypeName", "src": "530:7:23" } ], "id": 4350, "name": "VariableDeclaration", "src": "530:24:23" }, { "attributes": { "constant": false, "indexed": true, "mutability": "mutable", "name": "tokenId", "overrides": null, "scope": 4354, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 4351, "name": "ElementaryTypeName", "src": "556:7:23" } ], "id": 4352, "name": "VariableDeclaration", "src": "556:23:23" } ], "id": 4353, "name": "ParameterList", "src": "506:74:23" } ], "id": 4354, "name": "EventDefinition", "src": "492:89:23" }, { "attributes": { "anonymous": false, "name": "ApprovalForAll" }, "children": [ { "attributes": { "text": " @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets." }, "id": 4355, "name": "StructuredDocumentation", "src": "587:117:23" }, { "children": [ { "attributes": { "constant": false, "indexed": true, "mutability": "mutable", "name": "owner", "overrides": null, "scope": 4363, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4356, "name": "ElementaryTypeName", "src": "730:7:23" } ], "id": 4357, "name": "VariableDeclaration", "src": "730:21:23" }, { "attributes": { "constant": false, "indexed": true, "mutability": "mutable", "name": "operator", "overrides": null, "scope": 4363, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4358, "name": "ElementaryTypeName", "src": "753:7:23" } ], "id": 4359, "name": "VariableDeclaration", "src": "753:24:23" }, { "attributes": { "constant": false, "indexed": false, "mutability": "mutable", "name": "approved", "overrides": null, "scope": 4363, "stateVariable": false, "storageLocation": "default", "type": "bool", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "bool", "type": "bool" }, "id": 4360, "name": "ElementaryTypeName", "src": "779:4:23" } ], "id": 4361, "name": "VariableDeclaration", "src": "779:13:23" } ], "id": 4362, "name": "ParameterList", "src": "729:64:23" } ], "id": 4363, "name": "EventDefinition", "src": "709:85:23" }, { "attributes": { "body": null, "functionSelector": "70a08231", "implemented": false, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "balanceOf", "overrides": null, "scope": 4446, "stateMutability": "view", "virtual": false, "visibility": "external" }, "children": [ { "attributes": { "text": " @dev Returns the number of tokens in ``owner``'s account." }, "id": 4364, "name": "StructuredDocumentation", "src": "800:76:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "owner", "overrides": null, "scope": 4371, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4365, "name": "ElementaryTypeName", "src": "900:7:23" } ], "id": 4366, "name": "VariableDeclaration", "src": "900:13:23" } ], "id": 4367, "name": "ParameterList", "src": "899:15:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "balance", "overrides": null, "scope": 4371, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 4368, "name": "ElementaryTypeName", "src": "938:7:23" } ], "id": 4369, "name": "VariableDeclaration", "src": "938:15:23" } ], "id": 4370, "name": "ParameterList", "src": "937:17:23" } ], "id": 4371, "name": "FunctionDefinition", "src": "881:74:23" }, { "attributes": { "body": null, "functionSelector": "6352211e", "implemented": false, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "ownerOf", "overrides": null, "scope": 4446, "stateMutability": "view", "virtual": false, "visibility": "external" }, "children": [ { "attributes": { "text": " @dev Returns the owner of the `tokenId` token.\n Requirements:\n - `tokenId` must exist." }, "id": 4372, "name": "StructuredDocumentation", "src": "961:131:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "tokenId", "overrides": null, "scope": 4379, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 4373, "name": "ElementaryTypeName", "src": "1114:7:23" } ], "id": 4374, "name": "VariableDeclaration", "src": "1114:15:23" } ], "id": 4375, "name": "ParameterList", "src": "1113:17:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "owner", "overrides": null, "scope": 4379, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4376, "name": "ElementaryTypeName", "src": "1154:7:23" } ], "id": 4377, "name": "VariableDeclaration", "src": "1154:13:23" } ], "id": 4378, "name": "ParameterList", "src": "1153:15:23" } ], "id": 4379, "name": "FunctionDefinition", "src": "1097:72:23" }, { "attributes": { "body": null, "functionSelector": "42842e0e", "implemented": false, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "safeTransferFrom", "overrides": null, "scope": 4446, "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, "children": [ { "attributes": { "text": " @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients\n are aware of the ERC721 protocol to prevent tokens from being forever locked.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n Emits a {Transfer} event." }, "id": 4380, "name": "StructuredDocumentation", "src": "1175:690:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "from", "overrides": null, "scope": 4389, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4381, "name": "ElementaryTypeName", "src": "1896:7:23" } ], "id": 4382, "name": "VariableDeclaration", "src": "1896:12:23" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "to", "overrides": null, "scope": 4389, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4383, "name": "ElementaryTypeName", "src": "1910:7:23" } ], "id": 4384, "name": "VariableDeclaration", "src": "1910:10:23" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "tokenId", "overrides": null, "scope": 4389, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 4385, "name": "ElementaryTypeName", "src": "1922:7:23" } ], "id": 4386, "name": "VariableDeclaration", "src": "1922:15:23" } ], "id": 4387, "name": "ParameterList", "src": "1895:43:23" }, { "attributes": { "parameters": [ null ] }, "children": [], "id": 4388, "name": "ParameterList", "src": "1947:0:23" } ], "id": 4389, "name": "FunctionDefinition", "src": "1870:78:23" }, { "attributes": { "body": null, "functionSelector": "23b872dd", "implemented": false, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "transferFrom", "overrides": null, "scope": 4446, "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, "children": [ { "attributes": { "text": " @dev Transfers `tokenId` token from `from` to `to`.\n WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n Emits a {Transfer} event." }, "id": 4390, "name": "StructuredDocumentation", "src": "1954:504:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "from", "overrides": null, "scope": 4399, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4391, "name": "ElementaryTypeName", "src": "2485:7:23" } ], "id": 4392, "name": "VariableDeclaration", "src": "2485:12:23" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "to", "overrides": null, "scope": 4399, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4393, "name": "ElementaryTypeName", "src": "2499:7:23" } ], "id": 4394, "name": "VariableDeclaration", "src": "2499:10:23" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "tokenId", "overrides": null, "scope": 4399, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 4395, "name": "ElementaryTypeName", "src": "2511:7:23" } ], "id": 4396, "name": "VariableDeclaration", "src": "2511:15:23" } ], "id": 4397, "name": "ParameterList", "src": "2484:43:23" }, { "attributes": { "parameters": [ null ] }, "children": [], "id": 4398, "name": "ParameterList", "src": "2536:0:23" } ], "id": 4399, "name": "FunctionDefinition", "src": "2463:74:23" }, { "attributes": { "body": null, "functionSelector": "095ea7b3", "implemented": false, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "approve", "overrides": null, "scope": 4446, "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, "children": [ { "attributes": { "text": " @dev Gives permission to `to` to transfer `tokenId` token to another account.\n The approval is cleared when the token is transferred.\n Only a single account can be approved at a time, so approving the zero address clears previous approvals.\n Requirements:\n - The caller must own the token or be an approved operator.\n - `tokenId` must exist.\n Emits an {Approval} event." }, "id": 4400, "name": "StructuredDocumentation", "src": "2543:452:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "to", "overrides": null, "scope": 4407, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4401, "name": "ElementaryTypeName", "src": "3017:7:23" } ], "id": 4402, "name": "VariableDeclaration", "src": "3017:10:23" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "tokenId", "overrides": null, "scope": 4407, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 4403, "name": "ElementaryTypeName", "src": "3029:7:23" } ], "id": 4404, "name": "VariableDeclaration", "src": "3029:15:23" } ], "id": 4405, "name": "ParameterList", "src": "3016:29:23" }, { "attributes": { "parameters": [ null ] }, "children": [], "id": 4406, "name": "ParameterList", "src": "3054:0:23" } ], "id": 4407, "name": "FunctionDefinition", "src": "3000:55:23" }, { "attributes": { "body": null, "functionSelector": "081812fc", "implemented": false, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "getApproved", "overrides": null, "scope": 4446, "stateMutability": "view", "virtual": false, "visibility": "external" }, "children": [ { "attributes": { "text": " @dev Returns the account approved for `tokenId` token.\n Requirements:\n - `tokenId` must exist." }, "id": 4408, "name": "StructuredDocumentation", "src": "3061:139:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "tokenId", "overrides": null, "scope": 4415, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 4409, "name": "ElementaryTypeName", "src": "3226:7:23" } ], "id": 4410, "name": "VariableDeclaration", "src": "3226:15:23" } ], "id": 4411, "name": "ParameterList", "src": "3225:17:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "operator", "overrides": null, "scope": 4415, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4412, "name": "ElementaryTypeName", "src": "3266:7:23" } ], "id": 4413, "name": "VariableDeclaration", "src": "3266:16:23" } ], "id": 4414, "name": "ParameterList", "src": "3265:18:23" } ], "id": 4415, "name": "FunctionDefinition", "src": "3205:79:23" }, { "attributes": { "body": null, "functionSelector": "a22cb465", "implemented": false, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "setApprovalForAll", "overrides": null, "scope": 4446, "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, "children": [ { "attributes": { "text": " @dev Approve or remove `operator` as an operator for the caller.\n Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.\n Requirements:\n - The `operator` cannot be the caller.\n Emits an {ApprovalForAll} event." }, "id": 4416, "name": "StructuredDocumentation", "src": "3290:309:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "operator", "overrides": null, "scope": 4423, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4417, "name": "ElementaryTypeName", "src": "3631:7:23" } ], "id": 4418, "name": "VariableDeclaration", "src": "3631:16:23" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "_approved", "overrides": null, "scope": 4423, "stateVariable": false, "storageLocation": "default", "type": "bool", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "bool", "type": "bool" }, "id": 4419, "name": "ElementaryTypeName", "src": "3649:4:23" } ], "id": 4420, "name": "VariableDeclaration", "src": "3649:14:23" } ], "id": 4421, "name": "ParameterList", "src": "3630:34:23" }, { "attributes": { "parameters": [ null ] }, "children": [], "id": 4422, "name": "ParameterList", "src": "3673:0:23" } ], "id": 4423, "name": "FunctionDefinition", "src": "3604:70:23" }, { "attributes": { "body": null, "functionSelector": "e985e9c5", "implemented": false, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "isApprovedForAll", "overrides": null, "scope": 4446, "stateMutability": "view", "virtual": false, "visibility": "external" }, "children": [ { "attributes": { "text": " @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.\n See {setApprovalForAll}" }, "id": 4424, "name": "StructuredDocumentation", "src": "3680:138:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "owner", "overrides": null, "scope": 4433, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4425, "name": "ElementaryTypeName", "src": "3849:7:23" } ], "id": 4426, "name": "VariableDeclaration", "src": "3849:13:23" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "operator", "overrides": null, "scope": 4433, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4427, "name": "ElementaryTypeName", "src": "3864:7:23" } ], "id": 4428, "name": "VariableDeclaration", "src": "3864:16:23" } ], "id": 4429, "name": "ParameterList", "src": "3848:33:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "", "overrides": null, "scope": 4433, "stateVariable": false, "storageLocation": "default", "type": "bool", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "bool", "type": "bool" }, "id": 4430, "name": "ElementaryTypeName", "src": "3905:4:23" } ], "id": 4431, "name": "VariableDeclaration", "src": "3905:4:23" } ], "id": 4432, "name": "ParameterList", "src": "3904:6:23" } ], "id": 4433, "name": "FunctionDefinition", "src": "3823:88:23" }, { "attributes": { "body": null, "functionSelector": "b88d4fde", "implemented": false, "isConstructor": false, "kind": "function", "modifiers": [ null ], "name": "safeTransferFrom", "overrides": null, "scope": 4446, "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, "children": [ { "attributes": { "text": " @dev Safely transfers `tokenId` token from `from` to `to`.\n Requirements:\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n - `tokenId` token must exist and be owned by `from`.\n - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.\n - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n Emits a {Transfer} event." }, "id": 4434, "name": "StructuredDocumentation", "src": "3917:568:23" }, { "children": [ { "attributes": { "constant": false, "mutability": "mutable", "name": "from", "overrides": null, "scope": 4445, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4435, "name": "ElementaryTypeName", "src": "4516:7:23" } ], "id": 4436, "name": "VariableDeclaration", "src": "4516:12:23" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "to", "overrides": null, "scope": 4445, "stateVariable": false, "storageLocation": "default", "type": "address", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "address", "stateMutability": "nonpayable", "type": "address" }, "id": 4437, "name": "ElementaryTypeName", "src": "4530:7:23" } ], "id": 4438, "name": "VariableDeclaration", "src": "4530:10:23" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "tokenId", "overrides": null, "scope": 4445, "stateVariable": false, "storageLocation": "default", "type": "uint256", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "uint256", "type": "uint256" }, "id": 4439, "name": "ElementaryTypeName", "src": "4542:7:23" } ], "id": 4440, "name": "VariableDeclaration", "src": "4542:15:23" }, { "attributes": { "constant": false, "mutability": "mutable", "name": "data", "overrides": null, "scope": 4445, "stateVariable": false, "storageLocation": "calldata", "type": "bytes", "value": null, "visibility": "internal" }, "children": [ { "attributes": { "name": "bytes", "type": "bytes" }, "id": 4441, "name": "ElementaryTypeName", "src": "4559:5:23" } ], "id": 4442, "name": "VariableDeclaration", "src": "4559:19:23" } ], "id": 4443, "name": "ParameterList", "src": "4515:64:23" }, { "attributes": { "parameters": [ null ] }, "children": [], "id": 4444, "name": "ParameterList", "src": "4588:0:23" } ], "id": 4445, "name": "FunctionDefinition", "src": "4490:99:23" } ], "id": 4446, "name": "ContractDefinition", "src": "177:4414:23" } ], "id": 4447, "name": "SourceUnit", "src": "33:4559:23" }, "compiler": { "name": "solc", "version": "0.6.12+commit.27d51765.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.4.3", "updatedAt": "2021-11-29T02:07:34.209Z", "devdoc": { "details": "Required interface of an ERC721 compliant contract.", "events": { "Approval(address,address,uint256)": { "details": "Emitted when `owner` enables `approved` to manage the `tokenId` token." }, "ApprovalForAll(address,address,bool)": { "details": "Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets." }, "Transfer(address,address,uint256)": { "details": "Emitted when `tokenId` token is transferred from `from` to `to`." } }, "kind": "dev", "methods": { "approve(address,uint256)": { "details": "Gives permission to `to` to transfer `tokenId` token to another account. The approval is cleared when the token is transferred. Only a single account can be approved at a time, so approving the zero address clears previous approvals. Requirements: - The caller must own the token or be an approved operator. - `tokenId` must exist. Emits an {Approval} event." }, "balanceOf(address)": { "details": "Returns the number of tokens in ``owner``'s account." }, "getApproved(uint256)": { "details": "Returns the account approved for `tokenId` token. Requirements: - `tokenId` must exist." }, "isApprovedForAll(address,address)": { "details": "Returns if the `operator` is allowed to manage all of the assets of `owner`. See {setApprovalForAll}" }, "ownerOf(uint256)": { "details": "Returns the owner of the `tokenId` token. Requirements: - `tokenId` must exist." }, "safeTransferFrom(address,address,uint256)": { "details": "Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. Emits a {Transfer} event." }, "safeTransferFrom(address,address,uint256,bytes)": { "details": "Safely transfers `tokenId` token from `from` to `to`. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must exist and be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. Emits a {Transfer} event." }, "setApprovalForAll(address,bool)": { "details": "Approve or remove `operator` as an operator for the caller. Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. Requirements: - The `operator` cannot be the caller. Emits an {ApprovalForAll} event." }, "supportsInterface(bytes4)": { "details": "Returns true if this contract implements the interface defined by `interfaceId`. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas." }, "transferFrom(address,address,uint256)": { "details": "Transfers `tokenId` token from `from` to `to`. WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. Requirements: - `from` cannot be the zero address. - `to` cannot be the zero address. - `tokenId` token must be owned by `from`. - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. Emits a {Transfer} event." } }, "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 } }