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{
"contractName": "ERC721URIStorage",
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"source": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721URIStorage.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../ERC721.sol\";\n\n/**\n * @dev ERC721 token with storage based token URI management.\n */\nabstract contract ERC721URIStorage is ERC721 {\n using Strings for uint256;\n\n // Optional mapping for token URIs\n mapping(uint256 => string) private _tokenURIs;\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n require(_exists(tokenId), \"ERC721URIStorage: URI query for nonexistent token\");\n\n string memory _tokenURI = _tokenURIs[tokenId];\n string memory base = _baseURI();\n\n // If there is no base URI, return the token URI.\n if (bytes(base).length == 0) {\n return _tokenURI;\n }\n // If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).\n if (bytes(_tokenURI).length > 0) {\n return string(abi.encodePacked(base, _tokenURI));\n }\n\n return super.tokenURI(tokenId);\n }\n\n /**\n * @dev Sets `_tokenURI` as the tokenURI of `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {\n require(_exists(tokenId), \"ERC721URIStorage: URI set of nonexistent token\");\n _tokenURIs[tokenId] = _tokenURI;\n }\n\n /**\n * @dev Destroys `tokenId`.\n * The approval is cleared when the token is burned.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n *\n * Emits a {Transfer} event.\n */\n function _burn(uint256 tokenId) internal virtual override {\n super._burn(tokenId);\n\n if (bytes(_tokenURIs[tokenId]).length != 0) {\n delete _tokenURIs[tokenId];\n }\n }\n}\n",
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"approve(address,uint256)": {
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},
"balanceOf(address)": {
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},
"getApproved(uint256)": {
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},
"isApprovedForAll(address,address)": {
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},
"name()": {
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},
"ownerOf(uint256)": {
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},
"safeTransferFrom(address,address,uint256)": {
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},
"safeTransferFrom(address,address,uint256,bytes)": {
"details": "See {IERC721-safeTransferFrom}."
},
"setApprovalForAll(address,bool)": {
"details": "See {IERC721-setApprovalForAll}."
},
"supportsInterface(bytes4)": {
"details": "See {IERC165-supportsInterface}."
},
"symbol()": {
"details": "See {IERC721Metadata-symbol}."
},
"tokenURI(uint256)": {
"details": "See {IERC721Metadata-tokenURI}."
},
"transferFrom(address,address,uint256)": {
"details": "See {IERC721-transferFrom}."
}
},
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},
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}
}