{ "contractName": "ERC721", "abi": [ { "inputs": [ { "internalType": "string", "name": "name_", "type": "string" }, { "internalType": "string", "name": "symbol_", "type": "string" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "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": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "ownerOf", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "name", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "symbol", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "uint256", "name": "tokenId", "type": "uint256" } ], "name": "tokenURI", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "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": "", "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": "transferFrom", "outputs": [], "stateMutability": "nonpayable", "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\":\"0.8.0+commit.c7dfd78e\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"string\",\"name\":\"name_\",\"type\":\"string\"},{\"internalType\":\"string\",\"name\":\"symbol_\",\"type\":\"string\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"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\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"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\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"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\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"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\":\"Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including the Metadata extension, but not including the Enumerable extension, which is available separately as {ERC721Enumerable}.\",\"kind\":\"dev\",\"methods\":{\"approve(address,uint256)\":{\"details\":\"See {IERC721-approve}.\"},\"balanceOf(address)\":{\"details\":\"See {IERC721-balanceOf}.\"},\"constructor\":{\"details\":\"Initializes the contract by setting a `name` and a `symbol` to the token collection.\"},\"getApproved(uint256)\":{\"details\":\"See {IERC721-getApproved}.\"},\"isApprovedForAll(address,address)\":{\"details\":\"See {IERC721-isApprovedForAll}.\"},\"name()\":{\"details\":\"See {IERC721Metadata-name}.\"},\"ownerOf(uint256)\":{\"details\":\"See {IERC721-ownerOf}.\"},\"safeTransferFrom(address,address,uint256)\":{\"details\":\"See {IERC721-safeTransferFrom}.\"},\"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}.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/contracts/token/ERC721/ERC721.sol\":\"ERC721\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/token/ERC721/ERC721.sol\":{\"keccak256\":\"0x8d1cabca557cb77d97d801d674f0dacc33659e1430cdd34f91ae5d033fc3d93f\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://379879e94763b61c652f914da987a603fb1fec35645a1d6b8022413cf1c3a467\",\"dweb:/ipfs/QmVkFoHVN6XWztbJDHrWfMCRPV4QsbFGj6QPZYeMjQRfhr\"]},\"@openzeppelin/contracts/token/ERC721/IERC721.sol\":{\"keccak256\":\"0xc1c941ad1e580b4623007305921efe2f26fc7320a4edc226234dd707c658a428\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://473e11d739868e0d9f48254ccf84ba63290d6a2321d59a37b74c244a27f9cad7\",\"dweb:/ipfs/QmUGzDmecP936jzgM7SYyGwR1YgBGsveoHHJTbDfB8jbGF\"]},\"@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol\":{\"keccak256\":\"0x96877bb2eb8ca360e949ee1bd77b47a14e92e42f79897c350f088f87a3c231d4\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://48593d699a4ef6b5bd2efb20d37320e69303fd27d4b59a2b6b8a8e563e608456\",\"dweb:/ipfs/QmdAPS8uLrzPJEeFZyJVkwTtaL3KB9jo9wJm1UcoJP55wT\"]},\"@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol\":{\"keccak256\":\"0xccb7e6475afcb1c5cb13b3fbf1329c10b93620a9b66393388066683915271a78\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://df5776161e3226ac31bfb919dfe5f42e173a08293fadb4ffa90ffb55e76869d7\",\"dweb:/ipfs/QmXtKfvWj1v6oha8urbnw4RmjSpmQjZsGGqK5qk5trK4nH\"]},\"@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol\":{\"keccak256\":\"0xb8d11e77eb1ed34a33720edb551d7d6a6b0eee2bfaa40a7024020e1fdf879b16\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://c583283c838cc624a96a69eaa823fa92ac5294ec88d417e266c09ea091e0ae62\",\"dweb:/ipfs/QmNdzitXaFADaxooWpB4WsckkDyr4j6GQRxBjyKXsvEeXv\"]},\"@openzeppelin/contracts/utils/Address.sol\":{\"keccak256\":\"0x069b2631bb5b5193a58ccf7a06266c7361bd2c20095667af4402817605627f45\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6a4c96fafff76deda5697c3c5c98cade6e6e1b178254544c106bf360c079ce4e\",\"dweb:/ipfs/QmXmxubE3jnatFgZuN8ay1VV6hZ8WRmhvUjNpeVjki15HX\"]},\"@openzeppelin/contracts/utils/Context.sol\":{\"keccak256\":\"0xf930d2df426bfcfc1f7415be724f04081c96f4fb9ec8d0e3a521c07692dface0\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://fc2bfdea0d2562c76fb3c4cf70a86c6ba25c5a30e8f8515c95aafdf8383f8395\",\"dweb:/ipfs/QmTbFya18786ckJfLYUoWau9jBTKfmWnWm5XSViWvB7PXN\"]},\"@openzeppelin/contracts/utils/Strings.sol\":{\"keccak256\":\"0x456e9b3a2bfe189b5249857f624f4139e59331db518483b456c4e587a20552e0\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://1123c9545decc48a011370ebab4bf53dda98524fa21f9498e68851ba8f0ffc0f\",\"dweb:/ipfs/QmUpgMg8EFDnv87ePKUjXxXpJT3qwHRj9VDNSnRxu7T9sy\"]},\"@openzeppelin/contracts/utils/introspection/ERC165.sol\":{\"keccak256\":\"0x5718c5df9bd67ac68a796961df938821bb5dc0cd4c6118d77e9145afb187409b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://d10e1d9b26042424789246603906ad06143bf9a928f4e99de8b5e3bdc662f549\",\"dweb:/ipfs/Qmejonoaj5MLekPus229rJQHcC6E9dz2xorjHJR84fMfmn\"]},\"@openzeppelin/contracts/utils/introspection/IERC165.sol\":{\"keccak256\":\"0xa28007762d9da9db878dd421960c8cb9a10471f47ab5c1b3309bfe48e9e79ff4\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://796ab6e88af7bf0e78def0f059310c903af6a312b565344e0ff524a0f26e81c6\",\"dweb:/ipfs/QmcsVgLgzWdor3UnAztUkXKNGcysm1MPneWksF72AvnwBx\"]}},\"version\":1}", 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}, { "kind": "number", "nodeType": "YulLiteral", "src": "2953:4:17", "type": "", "value": "0x24" } ], "functionName": { "name": "revert", "nodeType": "YulIdentifier", "src": "2943:6:17" }, "nodeType": "YulFunctionCall", "src": "2943:15:17" }, "nodeType": "YulExpressionStatement", "src": "2943:15:17" } ] }, "name": "panic_error_0x41", "nodeType": "YulFunctionDefinition", "src": "2784:180:17" } ] }, "contents": "{\n\n function abi_decode_available_length_t_string_memory_ptr_fromMemory(src, length, end) -> array {\n array := allocateMemory(array_allocation_size_t_string_memory_ptr(length))\n mstore(array, length)\n let dst := add(array, 0x20)\n if gt(add(src, length), end) { revert(0, 0) }\n copy_memory_to_memory(src, dst, length)\n }\n\n // string\n function abi_decode_t_string_memory_ptr_fromMemory(offset, end) -> array {\n if iszero(slt(add(offset, 0x1f), end)) { revert(0, 0) }\n let length := mload(offset)\n array := abi_decode_available_length_t_string_memory_ptr_fromMemory(add(offset, 0x20), length, end)\n }\n\n function abi_decode_tuple_t_string_memory_ptrt_string_memory_ptr_fromMemory(headStart, dataEnd) -> value0, value1 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n\n let offset := mload(add(headStart, 0))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n\n value0 := abi_decode_t_string_memory_ptr_fromMemory(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := mload(add(headStart, 32))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n\n value1 := abi_decode_t_string_memory_ptr_fromMemory(add(headStart, offset), dataEnd)\n }\n\n }\n\n function allocateMemory(size) -> memPtr {\n memPtr := mload(64)\n let newFreePtr := add(memPtr, size)\n // protect against overflow\n if or(gt(newFreePtr, 0xffffffffffffffff), lt(newFreePtr, memPtr)) { panic_error_0x41() }\n mstore(64, newFreePtr)\n }\n\n function array_allocation_size_t_string_memory_ptr(length) -> size {\n // 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35408467139433450592217433187231851964531694900788300625387963629091585785856)\n mstore(4, 0x41)\n revert(0, 0x24)\n }\n\n}\n", "id": 17, "language": "Yul", "name": "#utility.yul" } ], "deployedGeneratedSources": [ { "ast": { "nodeType": "YulBlock", "src": "0:23428:17", "statements": [ { "body": { "nodeType": "YulBlock", "src": "90:259:17", "statements": [ { "nodeType": "YulAssignment", "src": "100:73:17", "value": { "arguments": [ { "arguments": [ { "name": "length", "nodeType": "YulIdentifier", "src": "165:6:17" } ], "functionName": { "name": "array_allocation_size_t_bytes_memory_ptr", "nodeType": "YulIdentifier", "src": "124:40:17" }, "nodeType": "YulFunctionCall", "src": "124:48:17" } ], "functionName": { "name": "allocateMemory", "nodeType": "YulIdentifier", "src": "109:14:17" }, "nodeType": "YulFunctionCall", "src": "109:64:17" }, "variableNames": [ { "name": "array", "nodeType": "YulIdentifier", "src": "100:5:17" } ] }, { "expression": { "arguments": [ { "name": "array", 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"src": "23366:2:17" }, "nodeType": "YulFunctionCall", "src": "23366:35:17" } ], "functionName": { "name": "iszero", "nodeType": "YulIdentifier", "src": "23359:6:17" }, "nodeType": "YulFunctionCall", "src": "23359:43:17" }, "nodeType": "YulIf", "src": "23356:2:17" } ] }, "name": "validator_revert_t_uint256", "nodeType": "YulFunctionDefinition", "parameters": [ { "name": "value", "nodeType": "YulTypedName", "src": "23339:5:17", "type": "" } ], "src": "23303:122:17" } ] }, "contents": "{\n\n function abi_decode_available_length_t_bytes_memory_ptr(src, length, end) -> array {\n array := allocateMemory(array_allocation_size_t_bytes_memory_ptr(length))\n mstore(array, length)\n let dst := add(array, 0x20)\n if gt(add(src, length), end) { revert(0, 0) }\n copy_calldata_to_memory(src, dst, length)\n }\n\n function abi_decode_t_address(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_address(value)\n }\n\n function abi_decode_t_bool(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_bool(value)\n }\n\n function abi_decode_t_bytes4(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_bytes4(value)\n }\n\n function abi_decode_t_bytes4_fromMemory(offset, end) -> value {\n value := mload(offset)\n validator_revert_t_bytes4(value)\n }\n\n // bytes\n function abi_decode_t_bytes_memory_ptr(offset, end) -> array {\n if iszero(slt(add(offset, 0x1f), end)) { revert(0, 0) }\n let length := calldataload(offset)\n array := abi_decode_available_length_t_bytes_memory_ptr(add(offset, 0x20), length, end)\n }\n\n function abi_decode_t_uint256(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_uint256(value)\n }\n\n function abi_decode_tuple_t_address(headStart, dataEnd) -> value0 {\n if slt(sub(dataEnd, headStart), 32) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_addresst_address(headStart, dataEnd) -> value0, value1 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 32\n\n value1 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_addresst_addresst_uint256(headStart, dataEnd) -> value0, value1, value2 {\n if slt(sub(dataEnd, headStart), 96) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 32\n\n value1 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 64\n\n value2 := abi_decode_t_uint256(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_addresst_addresst_uint256t_bytes_memory_ptr(headStart, dataEnd) -> value0, value1, value2, value3 {\n if slt(sub(dataEnd, headStart), 128) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 32\n\n value1 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 64\n\n value2 := abi_decode_t_uint256(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := calldataload(add(headStart, 96))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n\n value3 := abi_decode_t_bytes_memory_ptr(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_addresst_bool(headStart, dataEnd) -> value0, value1 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 32\n\n value1 := abi_decode_t_bool(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_addresst_uint256(headStart, dataEnd) -> value0, value1 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 32\n\n value1 := abi_decode_t_uint256(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_bytes4(headStart, dataEnd) -> value0 {\n if slt(sub(dataEnd, headStart), 32) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_bytes4(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_bytes4_fromMemory(headStart, dataEnd) -> value0 {\n if slt(sub(dataEnd, headStart), 32) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_bytes4_fromMemory(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_uint256(headStart, dataEnd) -> value0 {\n if slt(sub(dataEnd, headStart), 32) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_uint256(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_encode_t_address_to_t_address_fromStack(value, pos) {\n mstore(pos, cleanup_t_address(value))\n }\n\n function abi_encode_t_bool_to_t_bool_fromStack(value, pos) {\n mstore(pos, cleanup_t_bool(value))\n }\n\n function abi_encode_t_bytes_memory_ptr_to_t_bytes_memory_ptr_fromStack(value, pos) -> end {\n let length := array_length_t_bytes_memory_ptr(value)\n pos := array_storeLengthForEncoding_t_bytes_memory_ptr_fromStack(pos, length)\n copy_memory_to_memory(add(value, 0x20), pos, length)\n end := add(pos, round_up_to_mul_of_32(length))\n }\n\n function abi_encode_t_string_memory_ptr_to_t_string_memory_ptr_fromStack(value, pos) -> end {\n let length := array_length_t_string_memory_ptr(value)\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, length)\n copy_memory_to_memory(add(value, 0x20), pos, length)\n end := add(pos, round_up_to_mul_of_32(length))\n }\n\n function abi_encode_t_string_memory_ptr_to_t_string_memory_ptr_nonPadded_inplace_fromStack(value, pos) -> end {\n let length := array_length_t_string_memory_ptr(value)\n pos := array_storeLengthForEncoding_t_string_memory_ptr_nonPadded_inplace_fromStack(pos, length)\n copy_memory_to_memory(add(value, 0x20), pos, length)\n end := add(pos, length)\n }\n\n function abi_encode_t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 50)\n\n mstore(add(pos, 0), \"ERC721: transfer to non ERC721Re\")\n\n mstore(add(pos, 32), \"ceiver implementer\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_stringliteral_455fea98ea03c32d7dd1a6f1426917d80529bf47b3ccbde74e7206e889e709f4_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 36)\n\n mstore(add(pos, 0), \"ERC721: transfer to the zero add\")\n\n mstore(add(pos, 32), \"ress\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_stringliteral_45fe4329685be5ecd250fd0e6a25aea0ea4d0e30fb6a73c118b95749e6d70d05_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 25)\n\n mstore(add(pos, 0), \"ERC721: approve to caller\")\n\n end := add(pos, 32)\n }\n\n function abi_encode_t_stringliteral_5797d1ccb08b83980dd0c07ea40d8f6a64d35fff736a19bdd17522954cb0899c_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 44)\n\n mstore(add(pos, 0), \"ERC721: operator query for nonex\")\n\n mstore(add(pos, 32), \"istent token\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_stringliteral_6d83cef3e0cb19b8320a9c5feb26b56bbb08f152a8e61b12eca3302d8d68b23d_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 56)\n\n mstore(add(pos, 0), \"ERC721: approve caller is not ow\")\n\n mstore(add(pos, 32), \"ner nor approved for all\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_stringliteral_7395d4d3901c50cdfcab223d072f9aa36241df5d883e62cbf147ee1b05a9e6ba_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 42)\n\n mstore(add(pos, 0), \"ERC721: balance query for the ze\")\n\n mstore(add(pos, 32), \"ro address\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_stringliteral_7481f3df2a424c0755a1ad2356614e9a5a358d461ea2eae1f89cb21cbad00397_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 41)\n\n mstore(add(pos, 0), \"ERC721: owner query for nonexist\")\n\n mstore(add(pos, 32), \"ent token\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_stringliteral_9291e0f44949204f2e9b40e6be090924979d6047b2365868f4e9f027722eb89d_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 44)\n\n mstore(add(pos, 0), \"ERC721: approved query for nonex\")\n\n mstore(add(pos, 32), \"istent token\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_stringliteral_a01073130a885d6c1c1af6ac75fc3b1c4f9403c235362962bbf528e2bd87d950_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 41)\n\n mstore(add(pos, 0), \"ERC721: transfer of token that i\")\n\n mstore(add(pos, 32), \"s not own\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_stringliteral_a2d45c0fba603d40d82d590051761ca952d1ab9d78cca6d0d464d7b6e961a9cb_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 47)\n\n mstore(add(pos, 0), \"ERC721Metadata: URI query for no\")\n\n mstore(add(pos, 32), \"nexistent token\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_stringliteral_b51b4875eede07862961e8f9365c6749f5fe55c6ee5d7a9e42b6912ad0b15942_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 33)\n\n mstore(add(pos, 0), \"ERC721: approval to current owne\")\n\n mstore(add(pos, 32), \"r\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_stringliteral_c8682f3ad98807db59a6ec6bb812b72fed0a66e3150fa8239699ee83885247f2_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 49)\n\n mstore(add(pos, 0), \"ERC721: transfer caller is not o\")\n\n mstore(add(pos, 32), \"wner nor approved\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_uint256_to_t_uint256_fromStack(value, pos) {\n mstore(pos, cleanup_t_uint256(value))\n }\n\n function abi_encode_tuple_packed_t_string_memory_ptr_t_string_memory_ptr__to_t_string_memory_ptr_t_string_memory_ptr__nonPadded_inplace_fromStack_reversed(pos , value1, value0) -> end {\n\n pos := abi_encode_t_string_memory_ptr_to_t_string_memory_ptr_nonPadded_inplace_fromStack(value0, pos)\n\n pos := abi_encode_t_string_memory_ptr_to_t_string_memory_ptr_nonPadded_inplace_fromStack(value1, pos)\n\n end := pos\n }\n\n function abi_encode_tuple_t_address__to_t_address__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_address_to_t_address_fromStack(value0, add(headStart, 0))\n\n }\n\n function abi_encode_tuple_t_address_t_address_t_uint256_t_bytes_memory_ptr__to_t_address_t_address_t_uint256_t_bytes_memory_ptr__fromStack_reversed(headStart , value3, value2, value1, value0) -> tail {\n tail := add(headStart, 128)\n\n abi_encode_t_address_to_t_address_fromStack(value0, add(headStart, 0))\n\n abi_encode_t_address_to_t_address_fromStack(value1, add(headStart, 32))\n\n abi_encode_t_uint256_to_t_uint256_fromStack(value2, add(headStart, 64))\n\n mstore(add(headStart, 96), sub(tail, headStart))\n tail := abi_encode_t_bytes_memory_ptr_to_t_bytes_memory_ptr_fromStack(value3, tail)\n\n }\n\n function abi_encode_tuple_t_bool__to_t_bool__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_bool_to_t_bool_fromStack(value0, add(headStart, 0))\n\n }\n\n function abi_encode_tuple_t_string_memory_ptr__to_t_string_memory_ptr__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_string_memory_ptr_to_t_string_memory_ptr_fromStack(value0, tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_455fea98ea03c32d7dd1a6f1426917d80529bf47b3ccbde74e7206e889e709f4__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_455fea98ea03c32d7dd1a6f1426917d80529bf47b3ccbde74e7206e889e709f4_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_45fe4329685be5ecd250fd0e6a25aea0ea4d0e30fb6a73c118b95749e6d70d05__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_45fe4329685be5ecd250fd0e6a25aea0ea4d0e30fb6a73c118b95749e6d70d05_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_5797d1ccb08b83980dd0c07ea40d8f6a64d35fff736a19bdd17522954cb0899c__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_5797d1ccb08b83980dd0c07ea40d8f6a64d35fff736a19bdd17522954cb0899c_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_6d83cef3e0cb19b8320a9c5feb26b56bbb08f152a8e61b12eca3302d8d68b23d__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_6d83cef3e0cb19b8320a9c5feb26b56bbb08f152a8e61b12eca3302d8d68b23d_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_7395d4d3901c50cdfcab223d072f9aa36241df5d883e62cbf147ee1b05a9e6ba__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_7395d4d3901c50cdfcab223d072f9aa36241df5d883e62cbf147ee1b05a9e6ba_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_7481f3df2a424c0755a1ad2356614e9a5a358d461ea2eae1f89cb21cbad00397__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_7481f3df2a424c0755a1ad2356614e9a5a358d461ea2eae1f89cb21cbad00397_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_9291e0f44949204f2e9b40e6be090924979d6047b2365868f4e9f027722eb89d__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_9291e0f44949204f2e9b40e6be090924979d6047b2365868f4e9f027722eb89d_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_a01073130a885d6c1c1af6ac75fc3b1c4f9403c235362962bbf528e2bd87d950__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_a01073130a885d6c1c1af6ac75fc3b1c4f9403c235362962bbf528e2bd87d950_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_a2d45c0fba603d40d82d590051761ca952d1ab9d78cca6d0d464d7b6e961a9cb__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_a2d45c0fba603d40d82d590051761ca952d1ab9d78cca6d0d464d7b6e961a9cb_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_b51b4875eede07862961e8f9365c6749f5fe55c6ee5d7a9e42b6912ad0b15942__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_b51b4875eede07862961e8f9365c6749f5fe55c6ee5d7a9e42b6912ad0b15942_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_c8682f3ad98807db59a6ec6bb812b72fed0a66e3150fa8239699ee83885247f2__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_c8682f3ad98807db59a6ec6bb812b72fed0a66e3150fa8239699ee83885247f2_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_uint256__to_t_uint256__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_uint256_to_t_uint256_fromStack(value0, add(headStart, 0))\n\n }\n\n function allocateMemory(size) -> memPtr {\n memPtr := mload(64)\n let newFreePtr := add(memPtr, size)\n // protect against overflow\n if or(gt(newFreePtr, 0xffffffffffffffff), lt(newFreePtr, memPtr)) { panic_error_0x41() }\n mstore(64, newFreePtr)\n }\n\n function array_allocation_size_t_bytes_memory_ptr(length) -> size {\n // Make sure we can allocate memory without overflow\n if gt(length, 0xffffffffffffffff) { panic_error_0x41() }\n\n // round up\n size := and(add(length, 0x1f), not(0x1f))\n\n // add length slot\n size := add(size, 0x20)\n\n }\n\n function array_length_t_bytes_memory_ptr(value) -> length {\n\n length := mload(value)\n\n }\n\n function array_length_t_string_memory_ptr(value) -> length {\n\n length := mload(value)\n\n }\n\n function array_storeLengthForEncoding_t_bytes_memory_ptr_fromStack(pos, length) -> updated_pos {\n mstore(pos, length)\n updated_pos := add(pos, 0x20)\n }\n\n function array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, length) -> updated_pos {\n mstore(pos, length)\n updated_pos := add(pos, 0x20)\n }\n\n function array_storeLengthForEncoding_t_string_memory_ptr_nonPadded_inplace_fromStack(pos, length) -> updated_pos {\n updated_pos := pos\n }\n\n function checked_add_t_uint256(x, y) -> sum {\n x := cleanup_t_uint256(x)\n y := cleanup_t_uint256(y)\n\n // overflow, if x > (maxValue - y)\n if gt(x, sub(0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff, y)) { panic_error_0x11() }\n\n sum := add(x, y)\n }\n\n function checked_div_t_uint256(x, y) -> r {\n x := cleanup_t_uint256(x)\n y := cleanup_t_uint256(y)\n if iszero(y) { panic_error_0x12() }\n\n r := div(x, y)\n }\n\n function checked_sub_t_uint256(x, y) -> diff {\n x := cleanup_t_uint256(x)\n y := cleanup_t_uint256(y)\n\n if lt(x, y) { panic_error_0x11() }\n\n diff := sub(x, y)\n }\n\n function cleanup_t_address(value) -> cleaned {\n cleaned := cleanup_t_uint160(value)\n }\n\n function cleanup_t_bool(value) -> cleaned {\n cleaned := iszero(iszero(value))\n }\n\n function cleanup_t_bytes4(value) -> cleaned {\n cleaned := and(value, 0xffffffff00000000000000000000000000000000000000000000000000000000)\n }\n\n function cleanup_t_uint160(value) -> cleaned {\n cleaned := and(value, 0xffffffffffffffffffffffffffffffffffffffff)\n }\n\n function cleanup_t_uint256(value) -> cleaned {\n cleaned := value\n }\n\n function copy_calldata_to_memory(src, dst, length) {\n calldatacopy(dst, src, length)\n // clear end\n mstore(add(dst, length), 0)\n }\n\n function copy_memory_to_memory(src, dst, length) {\n let i := 0\n for { } lt(i, length) { i := add(i, 32) }\n {\n mstore(add(dst, i), mload(add(src, i)))\n }\n if gt(i, length)\n {\n // clear end\n mstore(add(dst, length), 0)\n }\n }\n\n function extract_byte_array_length(data) -> length {\n length := div(data, 2)\n let outOfPlaceEncoding := and(data, 1)\n if iszero(outOfPlaceEncoding) {\n length := and(length, 0x7f)\n }\n\n if eq(outOfPlaceEncoding, lt(length, 32)) {\n panic_error_0x22()\n }\n }\n\n function increment_t_uint256(value) -> ret {\n value := cleanup_t_uint256(value)\n if eq(value, 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff) { panic_error_0x11() }\n ret := add(value, 1)\n }\n\n function mod_t_uint256(x, y) -> r {\n x := cleanup_t_uint256(x)\n y := cleanup_t_uint256(y)\n if iszero(y) { panic_error_0x12() }\n r := mod(x, y)\n }\n\n function panic_error_0x11() {\n mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n mstore(4, 0x11)\n revert(0, 0x24)\n }\n\n function panic_error_0x12() {\n mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n mstore(4, 0x12)\n revert(0, 0x24)\n }\n\n function panic_error_0x22() {\n mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n mstore(4, 0x22)\n revert(0, 0x24)\n }\n\n function panic_error_0x41() {\n mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n mstore(4, 0x41)\n revert(0, 0x24)\n }\n\n function round_up_to_mul_of_32(value) -> result {\n result := and(add(value, 31), not(31))\n }\n\n function validator_revert_t_address(value) {\n if iszero(eq(value, cleanup_t_address(value))) { revert(0, 0) }\n }\n\n function validator_revert_t_bool(value) {\n if iszero(eq(value, cleanup_t_bool(value))) { revert(0, 0) }\n }\n\n function validator_revert_t_bytes4(value) {\n if iszero(eq(value, cleanup_t_bytes4(value))) { revert(0, 0) }\n }\n\n function validator_revert_t_uint256(value) {\n if iszero(eq(value, cleanup_t_uint256(value))) { revert(0, 0) }\n }\n\n}\n", "id": 17, "language": "Yul", "name": "#utility.yul" } ], "sourceMap": 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"source": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"./IERC721.sol\";\nimport \"./IERC721Receiver.sol\";\nimport \"./extensions/IERC721Metadata.sol\";\nimport \"./extensions/IERC721Enumerable.sol\";\nimport \"../../utils/Address.sol\";\nimport \"../../utils/Context.sol\";\nimport \"../../utils/Strings.sol\";\nimport \"../../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n * the Metadata extension, but not including the Enumerable extension, which is available separately as\n * {ERC721Enumerable}.\n */\ncontract ERC721 is Context, ERC165, IERC721, IERC721Metadata {\n using Address for address;\n using Strings for uint256;\n\n // Token name\n string private _name;\n\n // Token symbol\n string private _symbol;\n\n // Mapping from token ID to owner address\n mapping (uint256 => address) private _owners;\n\n // Mapping owner address to token count\n mapping (address => uint256) private _balances;\n\n // Mapping from token ID to approved address\n mapping (uint256 => address) private _tokenApprovals;\n\n // Mapping from owner to operator approvals\n mapping (address => mapping (address => bool)) private _operatorApprovals;\n\n /**\n * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.\n */\n constructor (string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev See {IERC165-supportsInterface}.\n */\n function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {\n return interfaceId == type(IERC721).interfaceId\n || interfaceId == type(IERC721Metadata).interfaceId\n || super.supportsInterface(interfaceId);\n }\n\n /**\n * @dev See {IERC721-balanceOf}.\n */\n function balanceOf(address owner) public view virtual override returns (uint256) {\n require(owner != address(0), \"ERC721: balance query for the zero address\");\n return _balances[owner];\n }\n\n /**\n * @dev See {IERC721-ownerOf}.\n */\n function ownerOf(uint256 tokenId) public view virtual override returns (address) {\n address owner = _owners[tokenId];\n require(owner != address(0), \"ERC721: owner query for nonexistent token\");\n return owner;\n }\n\n /**\n * @dev See {IERC721Metadata-name}.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev See {IERC721Metadata-symbol}.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev See {IERC721Metadata-tokenURI}.\n */\n function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {\n require(_exists(tokenId), \"ERC721Metadata: URI query for nonexistent token\");\n\n string memory baseURI = _baseURI();\n return bytes(baseURI).length > 0\n ? string(abi.encodePacked(baseURI, tokenId.toString()))\n : '';\n }\n\n /**\n * @dev Base URI for computing {tokenURI}. Empty by default, can be overriden\n * in child contracts.\n */\n function _baseURI() internal view virtual returns (string memory) {\n return \"\";\n }\n\n /**\n * @dev See {IERC721-approve}.\n */\n function approve(address to, uint256 tokenId) public virtual override {\n address owner = ERC721.ownerOf(tokenId);\n require(to != owner, \"ERC721: approval to current owner\");\n\n require(_msgSender() == owner || ERC721.isApprovedForAll(owner, _msgSender()),\n \"ERC721: approve caller is not owner nor approved for all\"\n );\n\n _approve(to, tokenId);\n }\n\n /**\n * @dev See {IERC721-getApproved}.\n */\n function getApproved(uint256 tokenId) public view virtual override returns (address) {\n require(_exists(tokenId), \"ERC721: approved query for nonexistent token\");\n\n return _tokenApprovals[tokenId];\n }\n\n /**\n * @dev See {IERC721-setApprovalForAll}.\n */\n function setApprovalForAll(address operator, bool approved) public virtual override {\n require(operator != _msgSender(), \"ERC721: approve to caller\");\n\n _operatorApprovals[_msgSender()][operator] = approved;\n emit ApprovalForAll(_msgSender(), operator, approved);\n }\n\n /**\n * @dev See {IERC721-isApprovedForAll}.\n */\n function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {\n return _operatorApprovals[owner][operator];\n }\n\n /**\n * @dev See {IERC721-transferFrom}.\n */\n function transferFrom(address from, address to, uint256 tokenId) public virtual override {\n //solhint-disable-next-line max-line-length\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: transfer caller is not owner nor approved\");\n\n _transfer(from, to, tokenId);\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {\n safeTransferFrom(from, to, tokenId, \"\");\n }\n\n /**\n * @dev See {IERC721-safeTransferFrom}.\n */\n function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {\n require(_isApprovedOrOwner(_msgSender(), tokenId), \"ERC721: transfer caller is not owner nor approved\");\n _safeTransfer(from, to, tokenId, _data);\n }\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 * `_data` is additional data, it has no specified format and it is sent in call to `to`.\n *\n * This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n * implement alternative mechanisms to perform token transfer, such as signature-based.\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 `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 _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {\n _transfer(from, to, tokenId);\n require(_checkOnERC721Received(from, to, tokenId, _data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Returns whether `tokenId` exists.\n *\n * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n *\n * Tokens start existing when they are minted (`_mint`),\n * and stop existing when they are burned (`_burn`).\n */\n function _exists(uint256 tokenId) internal view virtual returns (bool) {\n return _owners[tokenId] != address(0);\n }\n\n /**\n * @dev Returns whether `spender` is allowed to manage `tokenId`.\n *\n * Requirements:\n *\n * - `tokenId` must exist.\n */\n function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {\n require(_exists(tokenId), \"ERC721: operator query for nonexistent token\");\n address owner = ERC721.ownerOf(tokenId);\n return (spender == owner || getApproved(tokenId) == spender || ERC721.isApprovedForAll(owner, spender));\n }\n\n /**\n * @dev Safely mints `tokenId` and transfers it to `to`.\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\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 _safeMint(address to, uint256 tokenId) internal virtual {\n _safeMint(to, tokenId, \"\");\n }\n\n /**\n * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.\n */\n function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {\n _mint(to, tokenId);\n require(_checkOnERC721Received(address(0), to, tokenId, _data), \"ERC721: transfer to non ERC721Receiver implementer\");\n }\n\n /**\n * @dev Mints `tokenId` and transfers it to `to`.\n *\n * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n *\n * Requirements:\n *\n * - `tokenId` must not exist.\n * - `to` cannot be the zero address.\n *\n * Emits a {Transfer} event.\n */\n function _mint(address to, uint256 tokenId) internal virtual {\n require(to != address(0), \"ERC721: mint to the zero address\");\n require(!_exists(tokenId), \"ERC721: token already minted\");\n\n _beforeTokenTransfer(address(0), to, tokenId);\n\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(address(0), to, tokenId);\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 {\n address owner = ERC721.ownerOf(tokenId);\n\n _beforeTokenTransfer(owner, address(0), tokenId);\n\n // Clear approvals\n _approve(address(0), tokenId);\n\n _balances[owner] -= 1;\n delete _owners[tokenId];\n\n emit Transfer(owner, address(0), tokenId);\n }\n\n /**\n * @dev Transfers `tokenId` from `from` to `to`.\n * As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n * - `tokenId` token must be owned by `from`.\n *\n * Emits a {Transfer} event.\n */\n function _transfer(address from, address to, uint256 tokenId) internal virtual {\n require(ERC721.ownerOf(tokenId) == from, \"ERC721: transfer of token that is not own\");\n require(to != address(0), \"ERC721: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, tokenId);\n\n // Clear approvals from the previous owner\n _approve(address(0), tokenId);\n\n _balances[from] -= 1;\n _balances[to] += 1;\n _owners[tokenId] = to;\n\n emit Transfer(from, to, tokenId);\n }\n\n /**\n * @dev Approve `to` to operate on `tokenId`\n *\n * Emits a {Approval} event.\n */\n function _approve(address to, uint256 tokenId) internal virtual {\n _tokenApprovals[tokenId] = to;\n emit Approval(ERC721.ownerOf(tokenId), to, tokenId);\n }\n\n /**\n * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n * The call is not executed if the target address is not a contract.\n *\n * @param from address representing the previous owner of the given token ID\n * @param to target address that will receive the tokens\n * @param tokenId uint256 ID of the token to be transferred\n * @param _data bytes optional data to send along with the call\n * @return bool whether the call correctly returned the expected magic value\n */\n function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)\n private returns (bool)\n {\n if (to.isContract()) {\n try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {\n return retval == IERC721Receiver(to).onERC721Received.selector;\n } catch (bytes memory reason) {\n if (reason.length == 0) {\n revert(\"ERC721: transfer to non ERC721Receiver implementer\");\n } else {\n // solhint-disable-next-line no-inline-assembly\n assembly {\n revert(add(32, reason), mload(reason))\n }\n }\n }\n } else {\n return true;\n }\n }\n\n /**\n * @dev Hook that is called before any token transfer. This includes minting\n * and burning.\n *\n * Calling conditions:\n *\n * - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n * transferred to `to`.\n * - When `from` is zero, `tokenId` will be minted for `to`.\n * - When `to` is zero, ``from``'s `tokenId` will be burned.\n * - `from` cannot be the zero address.\n * - `to` cannot be the zero address.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }\n}\n", "sourcePath": "@openzeppelin\\contracts\\token\\ERC721\\ERC721.sol", "ast": { "absolutePath": "@openzeppelin/contracts/token/ERC721/ERC721.sol", "exportedSymbols": { "Address": [ 3997 ], "Context": [ 4020 ], "ERC165": [ 4308 ], "ERC721": [ 3381 ], "IERC165": [ 4320 ], "IERC721": [ 3497 ], "IERC721Enumerable": [ 3674 ], "IERC721Metadata": [ 3701 ], "IERC721Receiver": [ 3515 ], "Strings": [ 4284 ] }, "id": 3382, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 2562, "literals": [ "solidity", "^", "0.8", ".0" ], "nodeType": "PragmaDirective", "src": "33:23:5" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721.sol", "file": "./IERC721.sol", "id": 2563, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 3498, "src": "58:23:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol", "file": "./IERC721Receiver.sol", "id": 2564, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 3516, "src": "82:31:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol", "file": "./extensions/IERC721Metadata.sol", "id": 2565, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 3702, "src": "114:42:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol", "file": "./extensions/IERC721Enumerable.sol", "id": 2566, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 3675, "src": "157:44:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/Address.sol", "file": "../../utils/Address.sol", "id": 2567, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 3998, "src": "202:33:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/Context.sol", "file": "../../utils/Context.sol", "id": 2568, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 4021, "src": "236:33:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/Strings.sol", "file": "../../utils/Strings.sol", "id": 2569, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 4285, "src": "270:33:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/introspection/ERC165.sol", "file": "../../utils/introspection/ERC165.sol", "id": 2570, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 4309, "src": "304:46:5", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "baseName": { "id": 2572, "name": "Context", "nodeType": "IdentifierPath", "referencedDeclaration": 4020, "src": "618:7:5" }, "id": 2573, "nodeType": "InheritanceSpecifier", "src": "618:7:5" }, { "baseName": { "id": 2574, "name": "ERC165", "nodeType": "IdentifierPath", "referencedDeclaration": 4308, "src": "627:6:5" }, "id": 2575, "nodeType": "InheritanceSpecifier", "src": "627:6:5" }, { "baseName": { "id": 2576, "name": "IERC721", "nodeType": "IdentifierPath", "referencedDeclaration": 3497, "src": "635:7:5" }, "id": 2577, "nodeType": "InheritanceSpecifier", "src": "635:7:5" }, { "baseName": { "id": 2578, "name": "IERC721Metadata", "nodeType": "IdentifierPath", "referencedDeclaration": 3701, "src": "644:15:5" }, "id": 2579, "nodeType": "InheritanceSpecifier", "src": "644:15:5" } ], "contractDependencies": [ 3497, 3701, 4020, 4308, 4320 ], "contractKind": "contract", "documentation": { "id": 2571, "nodeType": "StructuredDocumentation", "src": "352:246:5", "text": " @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n the Metadata extension, but not including the Enumerable extension, which is available separately as\n {ERC721Enumerable}." }, "fullyImplemented": true, "id": 3381, "linearizedBaseContracts": [ 3381, 3701, 3497, 4308, 4320, 4020 ], "name": "ERC721", "nodeType": "ContractDefinition", "nodes": [ { "id": 2582, "libraryName": { "id": 2580, "name": "Address", "nodeType": "IdentifierPath", "referencedDeclaration": 3997, "src": "672:7:5" }, "nodeType": "UsingForDirective", "src": "666:26:5", "typeName": { "id": 2581, "name": "address", "nodeType": "ElementaryTypeName", "src": "684:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, { "id": 2585, "libraryName": { "id": 2583, "name": "Strings", "nodeType": "IdentifierPath", "referencedDeclaration": 4284, "src": "703:7:5" }, "nodeType": "UsingForDirective", "src": "697:26:5", "typeName": { "id": 2584, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "715:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "constant": false, "id": 2587, "mutability": "mutable", "name": "_name", "nodeType": "VariableDeclaration", "scope": 3381, "src": "747:20:5", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string" }, "typeName": { "id": 2586, "name": "string", "nodeType": "ElementaryTypeName", "src": "747:6:5", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "private" }, { "constant": false, "id": 2589, "mutability": "mutable", "name": "_symbol", "nodeType": "VariableDeclaration", "scope": 3381, "src": "794:22:5", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string" }, "typeName": { "id": 2588, "name": "string", "nodeType": "ElementaryTypeName", "src": "794:6:5", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "private" }, { "constant": false, "id": 2593, "mutability": "mutable", "name": "_owners", "nodeType": "VariableDeclaration", "scope": 3381, "src": "869:44:5", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" }, "typeName": { "id": 2592, "keyType": { "id": 2590, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "878:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Mapping", "src": "869:28:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" }, "valueType": { "id": 2591, "name": "address", "nodeType": "ElementaryTypeName", "src": "889:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, "visibility": "private" }, { "constant": false, "id": 2597, "mutability": "mutable", "name": "_balances", "nodeType": "VariableDeclaration", "scope": 3381, "src": "964:46:5", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "typeName": { "id": 2596, "keyType": { "id": 2594, "name": "address", "nodeType": "ElementaryTypeName", "src": "973:7:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "964:28:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 2595, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "984:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "visibility": "private" }, { "constant": false, "id": 2601, "mutability": "mutable", "name": "_tokenApprovals", "nodeType": "VariableDeclaration", "scope": 3381, "src": "1066:52:5", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" }, "typeName": { "id": 2600, "keyType": { "id": 2598, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1075:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Mapping", "src": "1066:28:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" }, "valueType": { "id": 2599, "name": "address", "nodeType": "ElementaryTypeName", "src": "1086:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, "visibility": "private" }, { "constant": false, "id": 2607, "mutability": "mutable", "name": "_operatorApprovals", "nodeType": "VariableDeclaration", "scope": 3381, "src": "1173:73:5", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_bool_$_$", "typeString": "mapping(address => mapping(address => bool))" }, "typeName": { "id": 2606, "keyType": { "id": 2602, "name": "address", "nodeType": "ElementaryTypeName", "src": "1182:7:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "1173:46:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_bool_$_$", "typeString": "mapping(address => mapping(address => bool))" }, "valueType": { "id": 2605, "keyType": { "id": 2603, "name": "address", "nodeType": "ElementaryTypeName", "src": "1202:7:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "1193:25:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_bool_$", "typeString": "mapping(address => bool)" }, "valueType": { "id": 2604, "name": "bool", "nodeType": "ElementaryTypeName", "src": "1213:4:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } } }, "visibility": "private" }, { "body": { "id": 2623, "nodeType": "Block", "src": "1423:57:5", "statements": [ { "expression": { "id": 2617, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 2615, "name": "_name", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2587, "src": "1433:5:5", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 2616, "name": "name_", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2610, "src": "1441:5:5", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "src": "1433:13:5", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "id": 2618, "nodeType": "ExpressionStatement", "src": "1433:13:5" }, { "expression": { "id": 2621, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 2619, "name": "_symbol", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2589, "src": "1456:7:5", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 2620, "name": "symbol_", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2612, "src": "1466:7:5", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "src": "1456:17:5", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string storage ref" } }, "id": 2622, "nodeType": "ExpressionStatement", "src": "1456:17:5" } ] }, "documentation": { "id": 2608, "nodeType": "StructuredDocumentation", "src": "1253:108:5", "text": " @dev Initializes the contract by setting a `name` and a `symbol` to the token collection." }, "id": 2624, "implemented": true, "kind": "constructor", "modifiers": [], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 2613, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2610, "mutability": "mutable", "name": "name_", "nodeType": "VariableDeclaration", "scope": 2624, "src": "1379:19:5", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 2609, "name": "string", "nodeType": "ElementaryTypeName", "src": "1379:6:5", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "internal" }, { "constant": false, "id": 2612, "mutability": "mutable", "name": "symbol_", "nodeType": "VariableDeclaration", "scope": 2624, "src": "1400:21:5", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 2611, "name": "string", "nodeType": "ElementaryTypeName", "src": "1400:6:5", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "internal" } ], "src": "1378:44:5" }, "returnParameters": { "id": 2614, "nodeType": "ParameterList", "parameters": [], "src": "1423:0:5" }, "scope": 3381, "src": "1366:114:5", "stateMutability": "nonpayable", "virtual": false, "visibility": "public" }, { "baseFunctions": [ 4307, 4319 ], "body": { "id": 2654, "nodeType": "Block", "src": "1655:180:5", "statements": [ { "expression": { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 2652, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 2647, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "id": 2640, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 2635, "name": "interfaceId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2627, "src": "1672:11:5", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "arguments": [ { "id": 2637, "name": "IERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3497, "src": "1692:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC721_$3497_$", "typeString": "type(contract IERC721)" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_type$_t_contract$_IERC721_$3497_$", "typeString": "type(contract IERC721)" } ], "id": 2636, "name": "type", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967269, "src": "1687:4:5", "typeDescriptions": { "typeIdentifier": "t_function_metatype_pure$__$returns$__$", "typeString": "function () pure" } }, "id": 2638, "isConstant": false, "isLValue": false, "isPure": true, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1687:13:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": 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"6612:111:5" } ] }, "documentation": { "id": 2972, "nodeType": "StructuredDocumentation", "src": "5605:851:5", "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 `_data` is additional data, it has no specified format and it is sent in call to `to`.\n This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n implement alternative mechanisms to perform token transfer, such as signature-based.\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 `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n Emits a {Transfer} event." }, "id": 3000, "implemented": true, "kind": "function", "modifiers": [], "name": "_safeTransfer", "nodeType": "FunctionDefinition", "parameters": { "id": 2981, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2974, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 3000, "src": "6484:12:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2973, "name": "address", "nodeType": "ElementaryTypeName", "src": "6484:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 2976, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3000, "src": "6498:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2975, "name": "address", "nodeType": "ElementaryTypeName", "src": "6498:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 2978, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3000, "src": "6510:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2977, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6510:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 2980, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "scope": 3000, "src": "6527:18:5", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2979, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6527:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "6483:63:5" }, "returnParameters": { "id": 2982, "nodeType": "ParameterList", "parameters": [], "src": "6564:0:5" }, "scope": 3381, "src": "6461:269:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3017, "nodeType": "Block", "src": "7104:54:5", "statements": [ { "expression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3015, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "baseExpression": { "id": 3008, "name": "_owners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2593, "src": "7121:7:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 3010, "indexExpression": { "id": 3009, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3003, "src": "7129:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "7121:16:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "arguments": [ { "hexValue": "30", "id": 3013, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7149:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3012, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "7141:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3011, "name": "address", "nodeType": "ElementaryTypeName", "src": "7141:7:5", "typeDescriptions": {} } }, "id": 3014, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7141:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "7121:30:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 3007, "id": 3016, "nodeType": "Return", "src": "7114:37:5" } ] }, "documentation": { "id": 3001, "nodeType": "StructuredDocumentation", "src": "6736:292:5", "text": " @dev Returns whether `tokenId` exists.\n Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n Tokens start existing when they are minted (`_mint`),\n and stop existing when they are burned (`_burn`)." }, "id": 3018, "implemented": true, "kind": "function", "modifiers": [], "name": "_exists", "nodeType": "FunctionDefinition", "parameters": { "id": 3004, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3003, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3018, "src": "7050:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3002, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7050:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "7049:17:5" }, "returnParameters": { "id": 3007, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3006, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 3018, "src": "7098:4:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 3005, "name": "bool", "nodeType": "ElementaryTypeName", "src": "7098:4:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "7097:6:5" }, "scope": 3381, "src": "7033:125:5", "stateMutability": "view", "virtual": true, "visibility": "internal" }, { "body": { "id": 3059, "nodeType": "Block", "src": "7415:252:5", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "id": 3030, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3023, "src": "7441:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3029, "name": "_exists", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3018, "src": "7433:7:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_bool_$", "typeString": "function (uint256) view returns (bool)" } }, "id": 3031, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7433:16:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a206f70657261746f7220717565727920666f72206e6f6e6578697374656e7420746f6b656e", "id": 3032, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "7451:46:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_5797d1ccb08b83980dd0c07ea40d8f6a64d35fff736a19bdd17522954cb0899c", "typeString": "literal_string \"ERC721: operator query for nonexistent token\"" }, "value": "ERC721: operator query for nonexistent token" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_5797d1ccb08b83980dd0c07ea40d8f6a64d35fff736a19bdd17522954cb0899c", "typeString": "literal_string \"ERC721: operator query for nonexistent token\"" } ], "id": 3028, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "7425:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3033, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7425:73:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3034, "nodeType": "ExpressionStatement", "src": "7425:73:5" }, { "assignments": [ 3036 ], "declarations": [ { "constant": false, "id": 3036, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "scope": 3059, "src": "7508:13:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3035, "name": "address", "nodeType": "ElementaryTypeName", "src": "7508:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "id": 3041, "initialValue": { "arguments": [ { "id": 3039, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3023, "src": "7539:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 3037, "name": "ERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3381, "src": "7524:6:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721_$3381_$", "typeString": "type(contract ERC721)" } }, "id": 3038, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "ownerOf", "nodeType": "MemberAccess", "referencedDeclaration": 2707, "src": "7524:14:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 3040, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7524:23:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "7508:39:5" }, { "expression": { "components": [ { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 3056, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 3050, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3044, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 3042, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3021, "src": "7565:7:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "id": 3043, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3036, "src": "7576:5:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "7565:16:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3049, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 3046, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3023, "src": "7597:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3045, "name": "getApproved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2843, "src": "7585:11:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 3047, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7585:20:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "id": 3048, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3021, "src": "7609:7:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "7585:31:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "7565:51:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "arguments": [ { "id": 3053, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3036, "src": "7644:5:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3054, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3021, "src": "7651:7:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "id": 3051, "name": "ERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3381, "src": "7620:6:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721_$3381_$", "typeString": "type(contract ERC721)" } }, "id": 3052, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "isApprovedForAll", "nodeType": "MemberAccess", "referencedDeclaration": 2895, "src": "7620:23:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_address_$returns$_t_bool_$", "typeString": "function (address,address) view returns (bool)" } }, "id": 3055, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7620:39:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "7565:94:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 3057, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7564:96:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 3027, "id": 3058, "nodeType": "Return", "src": "7557:103:5" } ] }, "documentation": { "id": 3019, "nodeType": "StructuredDocumentation", "src": "7164:147:5", "text": " @dev Returns whether `spender` is allowed to manage `tokenId`.\n Requirements:\n - `tokenId` must exist." }, "id": 3060, "implemented": true, "kind": "function", "modifiers": [], "name": "_isApprovedOrOwner", "nodeType": "FunctionDefinition", "parameters": { "id": 3024, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3021, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 3060, "src": "7344:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3020, "name": "address", "nodeType": "ElementaryTypeName", "src": "7344:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3023, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3060, "src": "7361:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3022, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7361:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "7343:34:5" }, "returnParameters": { "id": 3027, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3026, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 3060, "src": "7409:4:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 3025, "name": "bool", "nodeType": "ElementaryTypeName", "src": "7409:4:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "7408:6:5" }, "scope": 3381, "src": "7316:351:5", "stateMutability": "view", "virtual": true, "visibility": "internal" }, { "body": { "id": 3074, "nodeType": "Block", "src": "8062:43:5", "statements": [ { "expression": { "arguments": [ { "id": 3069, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3063, "src": "8082:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3070, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3065, "src": "8086:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "hexValue": "", "id": 3071, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8095:2:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" }, "value": "" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" } ], "id": 3068, "name": "_safeMint", "nodeType": "Identifier", "overloadedDeclarations": [ 3075, 3104 ], "referencedDeclaration": 3104, "src": "8072:9:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (address,uint256,bytes memory)" } }, "id": 3072, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8072:26:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3073, "nodeType": "ExpressionStatement", "src": "8072:26:5" } ] }, "documentation": { "id": 3061, "nodeType": "StructuredDocumentation", "src": "7673:319:5", "text": " @dev Safely mints `tokenId` and transfers it to `to`.\n Requirements:\n - `tokenId` must not exist.\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": 3075, "implemented": true, "kind": "function", "modifiers": [], "name": "_safeMint", "nodeType": "FunctionDefinition", "parameters": { "id": 3066, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3063, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3075, "src": "8016:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3062, "name": "address", "nodeType": "ElementaryTypeName", "src": "8016:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3065, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3075, "src": "8028:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3064, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8028:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "8015:29:5" }, "returnParameters": { "id": 3067, "nodeType": "ParameterList", "parameters": [], "src": "8062:0:5" }, "scope": 3381, "src": "7997:108:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3103, "nodeType": "Block", "src": "8411:162:5", "statements": [ { "expression": { "arguments": [ { "id": 3086, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3078, "src": "8427:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3087, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3080, "src": "8431:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3085, "name": "_mint", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3161, "src": "8421:5:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 3088, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8421:18:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3089, "nodeType": "ExpressionStatement", "src": "8421:18:5" }, { "expression": { "arguments": [ { "arguments": [ { "arguments": [ { "hexValue": "30", "id": 3094, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8488:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3093, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8480:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3092, "name": "address", "nodeType": "ElementaryTypeName", "src": "8480:7:5", "typeDescriptions": {} } }, "id": 3095, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8480:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3096, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3078, "src": "8492:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3097, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3080, "src": "8496:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 3098, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3082, "src": "8505:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 3091, "name": "_checkOnERC721Received", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3369, "src": "8457:22:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bool_$", "typeString": "function (address,address,uint256,bytes memory) returns (bool)" } }, "id": 3099, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8457:54:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a207472616e7366657220746f206e6f6e20455243373231526563656976657220696d706c656d656e746572", "id": 3100, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8513:52:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" }, "value": "ERC721: transfer to non ERC721Receiver implementer" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" } ], "id": 3090, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "8449:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3101, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8449:117:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3102, "nodeType": "ExpressionStatement", "src": "8449:117:5" } ] }, "documentation": { "id": 3076, "nodeType": "StructuredDocumentation", "src": "8111:210:5", "text": " @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n forwarded in {IERC721Receiver-onERC721Received} to contract recipients." }, "id": 3104, "implemented": true, "kind": "function", "modifiers": [], "name": "_safeMint", "nodeType": "FunctionDefinition", "parameters": { "id": 3083, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3078, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3104, "src": "8345:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3077, "name": "address", "nodeType": "ElementaryTypeName", "src": "8345:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3080, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3104, "src": "8357:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3079, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8357:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 3082, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "scope": 3104, "src": "8374:18:5", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 3081, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "8374:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "8344:49:5" }, "returnParameters": { "id": 3084, "nodeType": "ParameterList", "parameters": [], "src": "8411:0:5" }, "scope": 3381, "src": "8326:247:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3160, "nodeType": "Block", "src": "8956:311:5", "statements": [ { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3118, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 3113, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3107, "src": "8974:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "arguments": [ { "hexValue": "30", "id": 3116, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8988:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3115, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8980:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3114, "name": "address", "nodeType": "ElementaryTypeName", "src": "8980:7:5", "typeDescriptions": {} } }, "id": 3117, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8980:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8974:16:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a206d696e7420746f20746865207a65726f2061646472657373", "id": 3119, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8992:34:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_8a66f4bb6512ffbfcc3db9b42318eb65f26ac15163eaa9a1e5cfa7bee9d1c7c6", "typeString": "literal_string \"ERC721: mint to the zero address\"" }, "value": "ERC721: mint to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_8a66f4bb6512ffbfcc3db9b42318eb65f26ac15163eaa9a1e5cfa7bee9d1c7c6", "typeString": "literal_string \"ERC721: mint to the zero address\"" } ], "id": 3112, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "8966:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3120, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8966:61:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3121, "nodeType": "ExpressionStatement", "src": "8966:61:5" }, { "expression": { "arguments": [ { "id": 3126, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "9045:17:5", "subExpression": { "arguments": [ { "id": 3124, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3109, "src": "9054:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3123, "name": "_exists", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3018, "src": "9046:7:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_bool_$", "typeString": "function (uint256) view returns (bool)" } }, "id": 3125, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9046:16:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a20746f6b656e20616c7265616479206d696e746564", "id": 3127, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "9064:30:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_2a63ce106ef95058ed21fd07c42a10f11dc5c32ac13a4e847923f7759f635d57", "typeString": "literal_string \"ERC721: token already minted\"" }, "value": "ERC721: token already minted" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_2a63ce106ef95058ed21fd07c42a10f11dc5c32ac13a4e847923f7759f635d57", "typeString": "literal_string \"ERC721: token already minted\"" } ], "id": 3122, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "9037:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3128, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9037:58:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3129, "nodeType": "ExpressionStatement", "src": "9037:58:5" }, { "expression": { "arguments": [ { "arguments": [ { "hexValue": "30", "id": 3133, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9135:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3132, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9127:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3131, "name": "address", "nodeType": "ElementaryTypeName", "src": "9127:7:5", "typeDescriptions": {} } }, "id": 3134, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9127:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3135, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3107, "src": "9139:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3136, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3109, "src": "9143:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3130, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3380, "src": "9106:20:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3137, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9106:45:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3138, "nodeType": "ExpressionStatement", "src": "9106:45:5" }, { "expression": { "id": 3143, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3139, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2597, "src": "9162:9:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 3141, "indexExpression": { "id": 3140, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3107, "src": "9172:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9162:13:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "hexValue": "31", "id": 3142, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9179:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "9162:18:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3144, "nodeType": "ExpressionStatement", "src": "9162:18:5" }, { "expression": { "id": 3149, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3145, "name": "_owners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2593, "src": "9190:7:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 3147, "indexExpression": { "id": 3146, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3109, "src": "9198:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9190:16:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 3148, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3107, "src": "9209:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "9190:21:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 3150, "nodeType": "ExpressionStatement", "src": "9190:21:5" }, { "eventCall": { "arguments": [ { "arguments": [ { "hexValue": "30", "id": 3154, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9244:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3153, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9236:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3152, "name": "address", "nodeType": "ElementaryTypeName", "src": "9236:7:5", "typeDescriptions": {} } }, "id": 3155, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9236:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3156, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3107, "src": "9248:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3157, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3109, "src": "9252:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3151, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3396, "src": "9227:8:5", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3158, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9227:33:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3159, "nodeType": "EmitStatement", "src": "9222:38:5" } ] }, "documentation": { "id": 3105, "nodeType": "StructuredDocumentation", "src": "8579:311:5", "text": " @dev Mints `tokenId` and transfers it to `to`.\n WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n Requirements:\n - `tokenId` must not exist.\n - `to` cannot be the zero address.\n Emits a {Transfer} event." }, "id": 3161, "implemented": true, "kind": "function", "modifiers": [], "name": "_mint", "nodeType": "FunctionDefinition", "parameters": { "id": 3110, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3107, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3161, "src": "8910:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3106, "name": "address", "nodeType": "ElementaryTypeName", "src": "8910:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3109, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3161, "src": "8922:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3108, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8922:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "8909:29:5" }, "returnParameters": { "id": 3111, "nodeType": "ParameterList", "parameters": [], "src": "8956:0:5" }, "scope": 3381, "src": "8895:372:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3211, "nodeType": "Block", "src": "9533:299:5", "statements": [ { "assignments": [ 3168 ], "declarations": [ { "constant": false, "id": 3168, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "scope": 3211, "src": "9543:13:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3167, "name": "address", "nodeType": "ElementaryTypeName", "src": "9543:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "id": 3173, "initialValue": { "arguments": [ { "id": 3171, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3164, "src": "9574:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 3169, "name": "ERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3381, "src": "9559:6:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721_$3381_$", "typeString": "type(contract ERC721)" } }, "id": 3170, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "ownerOf", "nodeType": "MemberAccess", "referencedDeclaration": 2707, "src": "9559:14:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 3172, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9559:23:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "9543:39:5" }, { "expression": { "arguments": [ { "id": 3175, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3168, "src": "9614:5:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "arguments": [ { "hexValue": "30", "id": 3178, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9629:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3177, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9621:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3176, "name": "address", "nodeType": "ElementaryTypeName", "src": "9621:7:5", "typeDescriptions": {} } }, "id": 3179, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9621:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3180, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3164, "src": "9633:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3174, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3380, "src": "9593:20:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3181, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9593:48:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3182, "nodeType": "ExpressionStatement", "src": "9593:48:5" }, { "expression": { "arguments": [ { "arguments": [ { "hexValue": "30", "id": 3186, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9696:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3185, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9688:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3184, "name": "address", "nodeType": "ElementaryTypeName", "src": "9688:7:5", "typeDescriptions": {} } }, "id": 3187, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9688:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3188, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3164, "src": "9700:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3183, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3305, "src": "9679:8:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 3189, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9679:29:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3190, "nodeType": "ExpressionStatement", "src": "9679:29:5" }, { "expression": { "id": 3195, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3191, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2597, "src": "9719:9:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 3193, "indexExpression": { "id": 3192, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3168, "src": "9729:5:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9719:16:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "-=", "rightHandSide": { "hexValue": "31", "id": 3194, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9739:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "9719:21:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3196, "nodeType": "ExpressionStatement", "src": "9719:21:5" }, { "expression": { "id": 3200, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "delete", "prefix": true, "src": "9750:23:5", "subExpression": { "baseExpression": { "id": 3197, "name": "_owners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2593, "src": "9757:7:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 3199, "indexExpression": { "id": 3198, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3164, "src": "9765:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9757:16:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3201, "nodeType": "ExpressionStatement", "src": "9750:23:5" }, { "eventCall": { "arguments": [ { "id": 3203, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3168, "src": "9798:5:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "arguments": [ { "hexValue": "30", "id": 3206, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9813:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3205, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9805:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3204, "name": "address", "nodeType": "ElementaryTypeName", "src": "9805:7:5", "typeDescriptions": {} } }, "id": 3207, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9805:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3208, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3164, "src": "9817:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3202, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3396, "src": "9789:8:5", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3209, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9789:36:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3210, "nodeType": "EmitStatement", "src": "9784:41:5" } ] }, "documentation": { "id": 3162, "nodeType": "StructuredDocumentation", "src": "9273:206:5", "text": " @dev Destroys `tokenId`.\n The approval is cleared when the token is burned.\n Requirements:\n - `tokenId` must exist.\n Emits a {Transfer} event." }, "id": 3212, "implemented": true, "kind": "function", "modifiers": [], "name": "_burn", "nodeType": "FunctionDefinition", "parameters": { "id": 3165, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3164, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3212, "src": "9499:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3163, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9499:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "9498:17:5" }, "returnParameters": { "id": 3166, "nodeType": "ParameterList", "parameters": [], "src": "9533:0:5" }, "scope": 3381, "src": "9484:348:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3280, "nodeType": "Block", "src": "10235:451:5", "statements": [ { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3228, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 3225, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3219, "src": "10268:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 3223, "name": "ERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3381, "src": "10253:6:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721_$3381_$", "typeString": "type(contract ERC721)" } }, "id": 3224, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "ownerOf", "nodeType": "MemberAccess", "referencedDeclaration": 2707, "src": "10253:14:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 3226, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10253:23:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "id": 3227, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3215, "src": "10280:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "10253:31:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a207472616e73666572206f6620746f6b656e2074686174206973206e6f74206f776e", "id": 3229, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "10286:43:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_a01073130a885d6c1c1af6ac75fc3b1c4f9403c235362962bbf528e2bd87d950", "typeString": "literal_string \"ERC721: transfer of token that is not own\"" }, "value": "ERC721: transfer of token that is not own" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_a01073130a885d6c1c1af6ac75fc3b1c4f9403c235362962bbf528e2bd87d950", "typeString": "literal_string \"ERC721: transfer of token that is not own\"" } ], "id": 3222, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "10245:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3230, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10245:85:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3231, "nodeType": "ExpressionStatement", "src": "10245:85:5" }, { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3238, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 3233, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3217, "src": "10348:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "arguments": [ { "hexValue": "30", "id": 3236, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10362:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3235, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "10354:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3234, "name": "address", "nodeType": "ElementaryTypeName", "src": "10354:7:5", "typeDescriptions": {} } }, "id": 3237, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10354:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "10348:16:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a207472616e7366657220746f20746865207a65726f2061646472657373", "id": 3239, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "10366:38:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_455fea98ea03c32d7dd1a6f1426917d80529bf47b3ccbde74e7206e889e709f4", "typeString": "literal_string \"ERC721: transfer to the zero address\"" }, "value": "ERC721: transfer to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_455fea98ea03c32d7dd1a6f1426917d80529bf47b3ccbde74e7206e889e709f4", "typeString": "literal_string \"ERC721: transfer to the zero address\"" } ], "id": 3232, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "10340:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3240, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10340:65:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3241, "nodeType": "ExpressionStatement", "src": "10340:65:5" }, { "expression": { "arguments": [ { "id": 3243, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3215, "src": "10437:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3244, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3217, "src": "10443:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3245, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3219, "src": "10447:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3242, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3380, "src": "10416:20:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3246, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10416:39:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3247, "nodeType": "ExpressionStatement", "src": "10416:39:5" }, { "expression": { "arguments": [ { "arguments": [ { "hexValue": "30", "id": 3251, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10534:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3250, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "10526:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3249, "name": "address", "nodeType": "ElementaryTypeName", "src": "10526:7:5", "typeDescriptions": {} } }, "id": 3252, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10526:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3253, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3219, "src": "10538:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3248, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3305, "src": "10517:8:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 3254, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10517:29:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3255, "nodeType": "ExpressionStatement", "src": "10517:29:5" }, { "expression": { "id": 3260, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3256, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2597, "src": "10557:9:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 3258, "indexExpression": { "id": 3257, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3215, "src": "10567:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "10557:15:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "-=", "rightHandSide": { "hexValue": "31", "id": 3259, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10576:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "10557:20:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3261, "nodeType": "ExpressionStatement", "src": "10557:20:5" }, { "expression": { "id": 3266, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3262, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2597, "src": "10587:9:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 3264, "indexExpression": { "id": 3263, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3217, "src": "10597:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "10587:13:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "hexValue": "31", "id": 3265, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10604:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "10587:18:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3267, "nodeType": "ExpressionStatement", "src": "10587:18:5" }, { "expression": { "id": 3272, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3268, "name": "_owners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2593, "src": "10615:7:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 3270, "indexExpression": { "id": 3269, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3219, "src": "10623:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "10615:16:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 3271, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3217, "src": "10634:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "10615:21:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 3273, "nodeType": "ExpressionStatement", "src": "10615:21:5" }, { "eventCall": { "arguments": [ { "id": 3275, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3215, "src": "10661:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3276, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3217, "src": "10667:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3277, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3219, "src": "10671:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3274, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3396, "src": "10652:8:5", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3278, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10652:27:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3279, "nodeType": "EmitStatement", "src": "10647:32:5" } ] }, "documentation": { "id": 3213, "nodeType": "StructuredDocumentation", "src": "9838:313:5", "text": " @dev Transfers `tokenId` from `from` to `to`.\n As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n Requirements:\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n Emits a {Transfer} event." }, "id": 3281, "implemented": true, "kind": "function", "modifiers": [], "name": "_transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 3220, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3215, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 3281, "src": "10175:12:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3214, "name": "address", "nodeType": "ElementaryTypeName", "src": "10175:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3217, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3281, "src": "10189:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3216, "name": "address", "nodeType": "ElementaryTypeName", "src": "10189:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3219, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3281, "src": "10201:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3218, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10201:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "10174:43:5" }, "returnParameters": { "id": 3221, "nodeType": "ParameterList", "parameters": [], "src": "10235:0:5" }, "scope": 3381, "src": "10156:530:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3304, "nodeType": "Block", "src": "10861:107:5", "statements": [ { "expression": { "id": 3293, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3289, "name": "_tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2601, "src": "10871:15:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 3291, "indexExpression": { "id": 3290, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3286, "src": "10887:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "10871:24:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 3292, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3284, "src": "10898:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "10871:29:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 3294, "nodeType": "ExpressionStatement", "src": "10871:29:5" }, { "eventCall": { "arguments": [ { "arguments": [ { "id": 3298, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3286, "src": "10939:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 3296, "name": "ERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3381, "src": "10924:6:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721_$3381_$", "typeString": "type(contract ERC721)" } }, "id": 3297, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "ownerOf", "nodeType": "MemberAccess", "referencedDeclaration": 2707, "src": "10924:14:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 3299, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10924:23:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3300, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3284, "src": "10949:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3301, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3286, "src": "10953:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3295, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3405, "src": "10915:8:5", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3302, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10915:46:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3303, "nodeType": "EmitStatement", "src": "10910:51:5" } ] }, "documentation": { "id": 3282, "nodeType": "StructuredDocumentation", "src": "10692:100:5", "text": " @dev Approve `to` to operate on `tokenId`\n Emits a {Approval} event." }, "id": 3305, "implemented": true, "kind": "function", "modifiers": [], "name": "_approve", "nodeType": "FunctionDefinition", "parameters": { "id": 3287, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3284, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3305, "src": "10815:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3283, "name": "address", "nodeType": "ElementaryTypeName", "src": "10815:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3286, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3305, "src": "10827:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3285, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10827:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "10814:29:5" }, "returnParameters": { "id": 3288, "nodeType": "ParameterList", "parameters": [], "src": "10861:0:5" }, "scope": 3381, "src": "10797:171:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3368, "nodeType": "Block", "src": "11651:694:5", "statements": [ { "condition": { "arguments": [], "expression": { "argumentTypes": [], "expression": { "id": 3319, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3310, "src": "11665:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 3320, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "isContract", "nodeType": "MemberAccess", "referencedDeclaration": 3721, "src": "11665:13:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$bound_to$_t_address_$", "typeString": "function (address) view returns (bool)" } }, "id": 3321, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11665:15:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 3366, "nodeType": "Block", "src": "12303:36:5", "statements": [ { "expression": { "hexValue": "74727565", "id": 3364, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "12324:4:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 3318, "id": 3365, "nodeType": "Return", "src": "12317:11:5" } ] }, "id": 3367, "nodeType": "IfStatement", "src": "11661:678:5", "trueBody": { "id": 3363, "nodeType": "Block", "src": "11682:615:5", "statements": [ { "clauses": [ { "block": { "id": 3343, "nodeType": "Block", "src": "11797:95:5", "statements": [ { "expression": { "commonType": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "id": 3341, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 3335, "name": "retval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3333, "src": "11822:6:5", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "expression": { "arguments": [ { "id": 3337, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3310, "src": "11848:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 3336, "name": "IERC721Receiver", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3515, "src": "11832:15:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC721Receiver_$3515_$", "typeString": "type(contract IERC721Receiver)" } }, "id": 3338, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11832:19:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_contract$_IERC721Receiver_$3515", "typeString": "contract IERC721Receiver" } }, "id": 3339, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "onERC721Received", "nodeType": "MemberAccess", "referencedDeclaration": 3514, "src": "11832:36:5", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bytes4_$", "typeString": "function (address,address,uint256,bytes memory) external returns (bytes4)" } }, "id": 3340, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "src": "11832:45:5", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "src": "11822:55:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 3318, "id": 3342, "nodeType": "Return", "src": "11815:62:5" } ] }, "errorName": "", "id": 3344, "nodeType": "TryCatchClause", "parameters": { "id": 3334, "nodeType": 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"arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "12206:2:5", "type": "", "value": "32" }, { "name": "reason", "nodeType": "YulIdentifier", "src": "12210:6:5" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "12202:3:5" }, "nodeType": "YulFunctionCall", "src": "12202:15:5" }, { "arguments": [ { "name": "reason", "nodeType": "YulIdentifier", "src": "12225:6:5" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "12219:5:5" }, "nodeType": "YulFunctionCall", "src": "12219:13:5" } ], "functionName": { "name": "revert", "nodeType": "YulIdentifier", "src": "12195:6:5" }, "nodeType": "YulFunctionCall", "src": "12195:38:5" }, "nodeType": "YulExpressionStatement", "src": "12195:38:5" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 3346, "isOffset": false, "isSlot": false, "src": "12210:6:5", "valueSize": 1 }, { "declaration": 3346, "isOffset": false, "isSlot": false, "src": "12225:6:5", "valueSize": 1 } ], "id": 3357, "nodeType": "InlineAssembly", "src": "12160:95:5" } ] }, "id": 3359, "nodeType": "IfStatement", "src": "11939:334:5", "trueBody": { "id": 3356, "nodeType": "Block", "src": "11963:101:5", "statements": [ { "expression": { "arguments": [ { "hexValue": "4552433732313a207472616e7366657220746f206e6f6e20455243373231526563656976657220696d706c656d656e746572", "id": 3353, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "11992:52:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" }, "value": "ERC721: transfer to non ERC721Receiver implementer" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" } ], "id": 3352, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967277, 4294967277 ], "referencedDeclaration": 4294967277, "src": "11985:6:5", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 3354, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11985:60:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3355, "nodeType": "ExpressionStatement", "src": "11985:60:5" } ] } } ] }, "errorName": "", "id": 3361, "nodeType": "TryCatchClause", "parameters": { "id": 3347, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3346, "mutability": "mutable", "name": "reason", "nodeType": "VariableDeclaration", "scope": 3361, "src": "11900:19:5", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 3345, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "11900:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "11899:21:5" }, "src": "11893:394:5" } ], "externalCall": { "arguments": [ { "arguments": [], "expression": { "argumentTypes": [], "id": 3326, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4008, "src": "11737:10:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 3327, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11737:12:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3328, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3308, "src": "11751:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3329, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3312, "src": "11757:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 3330, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3314, "src": "11766:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "arguments": [ { "id": 3323, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3310, "src": "11716:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 3322, "name": "IERC721Receiver", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3515, "src": "11700:15:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC721Receiver_$3515_$", "typeString": "type(contract IERC721Receiver)" } }, "id": 3324, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11700:19:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_contract$_IERC721Receiver_$3515", "typeString": "contract IERC721Receiver" } }, "id": 3325, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "onERC721Received", "nodeType": "MemberAccess", "referencedDeclaration": 3514, "src": "11700:36:5", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bytes4_$", "typeString": "function (address,address,uint256,bytes memory) external returns (bytes4)" } }, "id": 3331, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11700:72:5", "tryCall": true, "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "id": 3362, "nodeType": "TryStatement", "src": "11696:591:5" } ] } } ] }, "documentation": { "id": 3306, "nodeType": "StructuredDocumentation", "src": "10974:542:5", "text": " @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n The call is not executed if the target address is not a contract.\n @param from address representing the previous owner of the given token ID\n @param to target address that will receive the tokens\n @param tokenId uint256 ID of the token to be transferred\n @param _data bytes optional data to send along with the call\n @return bool whether the call correctly returned the expected magic value" }, "id": 3369, "implemented": true, "kind": "function", "modifiers": [], "name": "_checkOnERC721Received", "nodeType": "FunctionDefinition", "parameters": { "id": 3315, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3308, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 3369, "src": "11553:12:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3307, "name": "address", "nodeType": "ElementaryTypeName", "src": "11553:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3310, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3369, "src": "11567:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3309, "name": "address", "nodeType": "ElementaryTypeName", "src": "11567:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3312, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3369, "src": "11579:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3311, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11579:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 3314, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "scope": 3369, "src": "11596:18:5", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 3313, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "11596:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "11552:63:5" }, "returnParameters": { "id": 3318, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3317, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 3369, "src": "11641:4:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 3316, "name": "bool", "nodeType": "ElementaryTypeName", "src": "11641:4:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "11640:6:5" }, "scope": 3381, "src": "11521:824:5", "stateMutability": "nonpayable", "virtual": false, "visibility": "private" }, { "body": { "id": 3379, "nodeType": "Block", "src": "13031:3:5", "statements": [] }, "documentation": { "id": 3370, "nodeType": "StructuredDocumentation", "src": "12351:585:5", "text": " @dev Hook that is called before any token transfer. This includes minting\n and burning.\n Calling conditions:\n - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n transferred to `to`.\n - When `from` is zero, `tokenId` will be minted for `to`.\n - When `to` is zero, ``from``'s `tokenId` will be burned.\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]." }, "id": 3380, "implemented": true, "kind": "function", "modifiers": [], "name": "_beforeTokenTransfer", "nodeType": "FunctionDefinition", "parameters": { "id": 3377, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3372, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 3380, "src": "12971:12:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3371, "name": "address", "nodeType": "ElementaryTypeName", "src": "12971:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3374, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3380, "src": "12985:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3373, "name": "address", "nodeType": "ElementaryTypeName", "src": "12985:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3376, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3380, "src": "12997:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3375, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12997:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "12970:43:5" }, "returnParameters": { "id": 3378, "nodeType": "ParameterList", "parameters": [], "src": "13031:0:5" }, "scope": 3381, "src": "12941:93:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" } ], "scope": 3382, "src": "599:12437:5" } ], "src": "33:13004:5" }, "legacyAST": { "absolutePath": "@openzeppelin/contracts/token/ERC721/ERC721.sol", "exportedSymbols": { "Address": [ 3997 ], "Context": [ 4020 ], "ERC165": [ 4308 ], "ERC721": [ 3381 ], "IERC165": [ 4320 ], "IERC721": [ 3497 ], "IERC721Enumerable": [ 3674 ], "IERC721Metadata": [ 3701 ], "IERC721Receiver": [ 3515 ], "Strings": [ 4284 ] }, "id": 3382, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 2562, "literals": [ "solidity", "^", "0.8", ".0" ], "nodeType": "PragmaDirective", "src": "33:23:5" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721.sol", "file": "./IERC721.sol", "id": 2563, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 3498, "src": "58:23:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol", "file": "./IERC721Receiver.sol", "id": 2564, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 3516, "src": "82:31:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol", "file": "./extensions/IERC721Metadata.sol", "id": 2565, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 3702, "src": "114:42:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol", "file": "./extensions/IERC721Enumerable.sol", "id": 2566, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 3675, "src": "157:44:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/Address.sol", "file": "../../utils/Address.sol", "id": 2567, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 3998, "src": "202:33:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/Context.sol", "file": "../../utils/Context.sol", "id": 2568, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 4021, "src": "236:33:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/Strings.sol", "file": "../../utils/Strings.sol", "id": 2569, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 4285, "src": "270:33:5", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/introspection/ERC165.sol", "file": "../../utils/introspection/ERC165.sol", "id": 2570, "nodeType": "ImportDirective", "scope": 3382, "sourceUnit": 4309, "src": "304:46:5", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "baseName": { "id": 2572, "name": "Context", "nodeType": "IdentifierPath", "referencedDeclaration": 4020, "src": "618:7:5" }, "id": 2573, "nodeType": "InheritanceSpecifier", "src": "618:7:5" }, { "baseName": { "id": 2574, "name": "ERC165", "nodeType": "IdentifierPath", "referencedDeclaration": 4308, "src": "627:6:5" }, "id": 2575, "nodeType": "InheritanceSpecifier", "src": "627:6:5" }, { "baseName": { "id": 2576, "name": "IERC721", "nodeType": "IdentifierPath", "referencedDeclaration": 3497, "src": "635:7:5" }, "id": 2577, "nodeType": "InheritanceSpecifier", "src": "635:7:5" }, { "baseName": { "id": 2578, "name": "IERC721Metadata", "nodeType": "IdentifierPath", "referencedDeclaration": 3701, "src": "644:15:5" }, "id": 2579, "nodeType": "InheritanceSpecifier", "src": "644:15:5" } ], "contractDependencies": [ 3497, 3701, 4020, 4308, 4320 ], "contractKind": "contract", "documentation": { "id": 2571, "nodeType": "StructuredDocumentation", "src": "352:246:5", "text": " @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including\n the Metadata extension, but not including the Enumerable extension, which is available separately as\n {ERC721Enumerable}." }, "fullyImplemented": true, "id": 3381, "linearizedBaseContracts": [ 3381, 3701, 3497, 4308, 4320, 4020 ], "name": "ERC721", "nodeType": "ContractDefinition", "nodes": [ { "id": 2582, "libraryName": { "id": 2580, "name": "Address", "nodeType": "IdentifierPath", "referencedDeclaration": 3997, "src": "672:7:5" }, "nodeType": "UsingForDirective", "src": "666:26:5", "typeName": { "id": 2581, "name": "address", "nodeType": "ElementaryTypeName", "src": "684:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, { "id": 2585, "libraryName": { "id": 2583, "name": "Strings", "nodeType": "IdentifierPath", "referencedDeclaration": 4284, "src": "703:7:5" }, "nodeType": "UsingForDirective", "src": "697:26:5", "typeName": { "id": 2584, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "715:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, { "constant": false, "id": 2587, "mutability": "mutable", "name": "_name", "nodeType": "VariableDeclaration", "scope": 3381, "src": "747:20:5", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string" }, "typeName": { "id": 2586, "name": "string", "nodeType": "ElementaryTypeName", "src": "747:6:5", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "private" }, { "constant": false, "id": 2589, "mutability": "mutable", "name": "_symbol", "nodeType": "VariableDeclaration", "scope": 3381, "src": "794:22:5", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string" }, "typeName": { "id": 2588, "name": "string", "nodeType": "ElementaryTypeName", "src": "794:6:5", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "private" }, { "constant": false, "id": 2593, "mutability": "mutable", "name": "_owners", "nodeType": "VariableDeclaration", "scope": 3381, "src": "869:44:5", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" }, "typeName": { "id": 2592, "keyType": { "id": 2590, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "878:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Mapping", "src": "869:28:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" }, "valueType": { "id": 2591, "name": 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"t_stringliteral_c8682f3ad98807db59a6ec6bb812b72fed0a66e3150fa8239699ee83885247f2", "typeString": "literal_string \"ERC721: transfer caller is not owner nor approved\"" }, "value": "ERC721: transfer caller is not owner nor approved" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_c8682f3ad98807db59a6ec6bb812b72fed0a66e3150fa8239699ee83885247f2", "typeString": "literal_string \"ERC721: transfer caller is not owner nor approved\"" } ], "id": 2954, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "5440:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 2961, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5440:103:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2962, "nodeType": "ExpressionStatement", "src": "5440:103:5" }, { "expression": { "arguments": [ { "id": 2964, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2944, "src": "5567:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2965, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2946, "src": "5573:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2966, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2948, "src": "5577:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 2967, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2950, "src": "5586:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 2963, "name": "_safeTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3000, "src": "5553:13:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (address,address,uint256,bytes memory)" } }, "id": 2968, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5553:39:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2969, "nodeType": "ExpressionStatement", "src": "5553:39:5" } ] }, "documentation": { "id": 2942, "nodeType": "StructuredDocumentation", "src": "5257:55:5", "text": " @dev See {IERC721-safeTransferFrom}." }, "functionSelector": "b88d4fde", "id": 2971, "implemented": true, "kind": "function", "modifiers": [], "name": "safeTransferFrom", "nodeType": "FunctionDefinition", "overrides": { "id": 2952, "nodeType": "OverrideSpecifier", "overrides": [], "src": "5421:8:5" }, "parameters": { "id": 2951, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2944, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 2971, "src": "5343:12:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2943, "name": "address", "nodeType": "ElementaryTypeName", "src": "5343:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 2946, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 2971, "src": "5357:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2945, "name": "address", "nodeType": "ElementaryTypeName", "src": "5357:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 2948, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 2971, "src": "5369:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2947, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "5369:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 2950, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "scope": 2971, "src": "5386:18:5", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2949, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "5386:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "5342:63:5" }, "returnParameters": { "id": 2953, "nodeType": "ParameterList", "parameters": [], "src": "5430:0:5" }, "scope": 3381, "src": "5317:282:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "public" }, { "body": { "id": 2999, "nodeType": "Block", "src": "6564:166:5", "statements": [ { "expression": { "arguments": [ { "id": 2984, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2974, "src": "6584:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2985, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2976, "src": "6590:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2986, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2978, "src": "6594:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2983, "name": "_transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3281, "src": "6574:9:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 2987, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6574:28:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2988, "nodeType": "ExpressionStatement", "src": "6574:28:5" }, { "expression": { "arguments": [ { "arguments": [ { "id": 2991, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2974, "src": "6643:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2992, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2976, "src": "6649:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2993, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2978, "src": "6653:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 2994, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2980, "src": "6662:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 2990, "name": "_checkOnERC721Received", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3369, "src": "6620:22:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bool_$", "typeString": "function (address,address,uint256,bytes memory) returns (bool)" } }, "id": 2995, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6620:48:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a207472616e7366657220746f206e6f6e20455243373231526563656976657220696d706c656d656e746572", "id": 2996, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "6670:52:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" }, "value": "ERC721: transfer to non ERC721Receiver implementer" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" } ], "id": 2989, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "6612:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 2997, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6612:111:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2998, "nodeType": "ExpressionStatement", "src": "6612:111:5" } ] }, "documentation": { "id": 2972, "nodeType": "StructuredDocumentation", "src": "5605:851:5", "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 `_data` is additional data, it has no specified format and it is sent in call to `to`.\n This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.\n implement alternative mechanisms to perform token transfer, such as signature-based.\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 `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.\n Emits a {Transfer} event." }, "id": 3000, "implemented": true, "kind": "function", "modifiers": [], "name": "_safeTransfer", "nodeType": "FunctionDefinition", "parameters": { "id": 2981, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2974, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 3000, "src": "6484:12:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2973, "name": "address", "nodeType": "ElementaryTypeName", "src": "6484:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 2976, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3000, "src": "6498:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2975, "name": "address", "nodeType": "ElementaryTypeName", "src": "6498:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 2978, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3000, "src": "6510:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2977, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "6510:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 2980, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "scope": 3000, "src": "6527:18:5", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2979, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "6527:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "6483:63:5" }, "returnParameters": { "id": 2982, "nodeType": "ParameterList", "parameters": [], "src": "6564:0:5" }, "scope": 3381, "src": "6461:269:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3017, "nodeType": "Block", "src": "7104:54:5", "statements": [ { "expression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3015, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "baseExpression": { "id": 3008, "name": "_owners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2593, "src": "7121:7:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 3010, "indexExpression": { "id": 3009, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3003, "src": "7129:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "7121:16:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "arguments": [ { "hexValue": "30", "id": 3013, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7149:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3012, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "7141:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3011, "name": "address", "nodeType": "ElementaryTypeName", "src": "7141:7:5", "typeDescriptions": {} } }, "id": 3014, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7141:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "7121:30:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 3007, "id": 3016, "nodeType": "Return", "src": "7114:37:5" } ] }, "documentation": { "id": 3001, "nodeType": "StructuredDocumentation", "src": "6736:292:5", "text": " @dev Returns whether `tokenId` exists.\n Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.\n Tokens start existing when they are minted (`_mint`),\n and stop existing when they are burned (`_burn`)." }, "id": 3018, "implemented": true, "kind": "function", "modifiers": [], "name": "_exists", "nodeType": "FunctionDefinition", "parameters": { "id": 3004, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3003, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3018, "src": "7050:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3002, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7050:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "7049:17:5" }, "returnParameters": { "id": 3007, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3006, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 3018, "src": "7098:4:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 3005, "name": "bool", "nodeType": "ElementaryTypeName", "src": "7098:4:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "7097:6:5" }, "scope": 3381, "src": "7033:125:5", "stateMutability": "view", "virtual": true, "visibility": "internal" }, { "body": { "id": 3059, "nodeType": "Block", "src": "7415:252:5", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "id": 3030, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3023, "src": "7441:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3029, "name": "_exists", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3018, "src": "7433:7:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_bool_$", "typeString": "function (uint256) view returns (bool)" } }, "id": 3031, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7433:16:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a206f70657261746f7220717565727920666f72206e6f6e6578697374656e7420746f6b656e", "id": 3032, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "7451:46:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_5797d1ccb08b83980dd0c07ea40d8f6a64d35fff736a19bdd17522954cb0899c", "typeString": "literal_string \"ERC721: operator query for nonexistent token\"" }, "value": "ERC721: operator query for nonexistent token" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_5797d1ccb08b83980dd0c07ea40d8f6a64d35fff736a19bdd17522954cb0899c", "typeString": "literal_string \"ERC721: operator query for nonexistent token\"" } ], "id": 3028, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "7425:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3033, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7425:73:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3034, "nodeType": "ExpressionStatement", "src": "7425:73:5" }, { "assignments": [ 3036 ], "declarations": [ { "constant": false, "id": 3036, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "scope": 3059, "src": "7508:13:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3035, "name": "address", "nodeType": "ElementaryTypeName", "src": "7508:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "id": 3041, "initialValue": { "arguments": [ { "id": 3039, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3023, "src": "7539:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 3037, "name": "ERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3381, "src": "7524:6:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721_$3381_$", "typeString": "type(contract ERC721)" } }, "id": 3038, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "ownerOf", "nodeType": "MemberAccess", "referencedDeclaration": 2707, "src": "7524:14:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 3040, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7524:23:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "7508:39:5" }, { "expression": { "components": [ { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 3056, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 3050, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3044, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 3042, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3021, "src": "7565:7:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "id": 3043, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3036, "src": "7576:5:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "7565:16:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3049, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 3046, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3023, "src": "7597:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3045, "name": "getApproved", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2843, "src": "7585:11:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 3047, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7585:20:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "id": 3048, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3021, "src": "7609:7:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "7585:31:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "7565:51:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "arguments": [ { "id": 3053, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3036, "src": "7644:5:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3054, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3021, "src": "7651:7:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "id": 3051, "name": "ERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3381, "src": "7620:6:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721_$3381_$", "typeString": "type(contract ERC721)" } }, "id": 3052, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "isApprovedForAll", "nodeType": "MemberAccess", "referencedDeclaration": 2895, "src": "7620:23:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$_t_address_$returns$_t_bool_$", "typeString": "function (address,address) view returns (bool)" } }, "id": 3055, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7620:39:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "7565:94:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 3057, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7564:96:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 3027, "id": 3058, "nodeType": "Return", "src": "7557:103:5" } ] }, "documentation": { "id": 3019, "nodeType": "StructuredDocumentation", "src": "7164:147:5", "text": " @dev Returns whether `spender` is allowed to manage `tokenId`.\n Requirements:\n - `tokenId` must exist." }, "id": 3060, "implemented": true, "kind": "function", "modifiers": [], "name": "_isApprovedOrOwner", "nodeType": "FunctionDefinition", "parameters": { "id": 3024, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3021, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 3060, "src": "7344:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3020, "name": "address", "nodeType": "ElementaryTypeName", "src": "7344:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3023, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3060, "src": "7361:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3022, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "7361:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "7343:34:5" }, "returnParameters": { "id": 3027, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3026, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 3060, "src": "7409:4:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 3025, "name": "bool", "nodeType": "ElementaryTypeName", "src": "7409:4:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "7408:6:5" }, "scope": 3381, "src": "7316:351:5", "stateMutability": "view", "virtual": true, "visibility": "internal" }, { "body": { "id": 3074, "nodeType": "Block", "src": "8062:43:5", "statements": [ { "expression": { "arguments": [ { "id": 3069, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3063, "src": "8082:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3070, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3065, "src": "8086:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "hexValue": "", "id": 3071, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8095:2:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" }, "value": "" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" } ], "id": 3068, "name": "_safeMint", "nodeType": "Identifier", "overloadedDeclarations": [ 3075, 3104 ], "referencedDeclaration": 3104, "src": "8072:9:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (address,uint256,bytes memory)" } }, "id": 3072, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8072:26:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3073, "nodeType": "ExpressionStatement", "src": "8072:26:5" } ] }, "documentation": { "id": 3061, "nodeType": "StructuredDocumentation", "src": "7673:319:5", "text": " @dev Safely mints `tokenId` and transfers it to `to`.\n Requirements:\n - `tokenId` must not exist.\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": 3075, "implemented": true, "kind": "function", "modifiers": [], "name": "_safeMint", "nodeType": "FunctionDefinition", "parameters": { "id": 3066, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3063, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3075, "src": "8016:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3062, "name": "address", "nodeType": "ElementaryTypeName", "src": "8016:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3065, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3075, "src": "8028:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3064, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8028:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "8015:29:5" }, "returnParameters": { "id": 3067, "nodeType": "ParameterList", "parameters": [], "src": "8062:0:5" }, "scope": 3381, "src": "7997:108:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3103, "nodeType": "Block", "src": "8411:162:5", "statements": [ { "expression": { "arguments": [ { "id": 3086, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3078, "src": "8427:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3087, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3080, "src": "8431:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3085, "name": "_mint", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3161, "src": "8421:5:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 3088, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8421:18:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3089, "nodeType": "ExpressionStatement", "src": "8421:18:5" }, { "expression": { "arguments": [ { "arguments": [ { "arguments": [ { "hexValue": "30", "id": 3094, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8488:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3093, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8480:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3092, "name": "address", "nodeType": "ElementaryTypeName", "src": "8480:7:5", "typeDescriptions": {} } }, "id": 3095, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8480:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3096, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3078, "src": "8492:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3097, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3080, "src": "8496:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 3098, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3082, "src": "8505:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 3091, "name": "_checkOnERC721Received", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3369, "src": "8457:22:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bool_$", "typeString": "function (address,address,uint256,bytes memory) returns (bool)" } }, "id": 3099, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8457:54:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a207472616e7366657220746f206e6f6e20455243373231526563656976657220696d706c656d656e746572", "id": 3100, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8513:52:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" }, "value": "ERC721: transfer to non ERC721Receiver implementer" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" } ], "id": 3090, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "8449:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3101, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8449:117:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3102, "nodeType": "ExpressionStatement", "src": "8449:117:5" } ] }, "documentation": { "id": 3076, "nodeType": "StructuredDocumentation", "src": "8111:210:5", "text": " @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is\n forwarded in {IERC721Receiver-onERC721Received} to contract recipients." }, "id": 3104, "implemented": true, "kind": "function", "modifiers": [], "name": "_safeMint", "nodeType": "FunctionDefinition", "parameters": { "id": 3083, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3078, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3104, "src": "8345:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3077, "name": "address", "nodeType": "ElementaryTypeName", "src": "8345:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3080, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3104, "src": "8357:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3079, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8357:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 3082, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "scope": 3104, "src": "8374:18:5", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 3081, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "8374:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "8344:49:5" }, "returnParameters": { "id": 3084, "nodeType": "ParameterList", "parameters": [], "src": "8411:0:5" }, "scope": 3381, "src": "8326:247:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3160, "nodeType": "Block", "src": "8956:311:5", "statements": [ { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3118, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 3113, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3107, "src": "8974:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "arguments": [ { "hexValue": "30", "id": 3116, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8988:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3115, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8980:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3114, "name": "address", "nodeType": "ElementaryTypeName", "src": "8980:7:5", "typeDescriptions": {} } }, "id": 3117, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8980:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "8974:16:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a206d696e7420746f20746865207a65726f2061646472657373", "id": 3119, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "8992:34:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_8a66f4bb6512ffbfcc3db9b42318eb65f26ac15163eaa9a1e5cfa7bee9d1c7c6", "typeString": "literal_string \"ERC721: mint to the zero address\"" }, "value": "ERC721: mint to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_8a66f4bb6512ffbfcc3db9b42318eb65f26ac15163eaa9a1e5cfa7bee9d1c7c6", "typeString": "literal_string \"ERC721: mint to the zero address\"" } ], "id": 3112, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "8966:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3120, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8966:61:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3121, "nodeType": "ExpressionStatement", "src": "8966:61:5" }, { "expression": { "arguments": [ { "id": 3126, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "9045:17:5", "subExpression": { "arguments": [ { "id": 3124, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3109, "src": "9054:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3123, "name": "_exists", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3018, "src": "9046:7:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_bool_$", "typeString": "function (uint256) view returns (bool)" } }, "id": 3125, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9046:16:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a20746f6b656e20616c7265616479206d696e746564", "id": 3127, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "9064:30:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_2a63ce106ef95058ed21fd07c42a10f11dc5c32ac13a4e847923f7759f635d57", "typeString": "literal_string \"ERC721: token already minted\"" }, "value": "ERC721: token already minted" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_2a63ce106ef95058ed21fd07c42a10f11dc5c32ac13a4e847923f7759f635d57", "typeString": "literal_string \"ERC721: token already minted\"" } ], "id": 3122, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "9037:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3128, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9037:58:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3129, "nodeType": "ExpressionStatement", "src": "9037:58:5" }, { "expression": { "arguments": [ { "arguments": [ { "hexValue": "30", "id": 3133, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9135:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3132, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9127:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3131, "name": "address", "nodeType": "ElementaryTypeName", "src": "9127:7:5", "typeDescriptions": {} } }, "id": 3134, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9127:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3135, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3107, "src": "9139:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3136, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3109, "src": "9143:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3130, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3380, "src": "9106:20:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3137, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9106:45:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3138, "nodeType": "ExpressionStatement", "src": "9106:45:5" }, { "expression": { "id": 3143, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3139, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2597, "src": "9162:9:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 3141, "indexExpression": { "id": 3140, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3107, "src": "9172:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9162:13:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "hexValue": "31", "id": 3142, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9179:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "9162:18:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3144, "nodeType": "ExpressionStatement", "src": "9162:18:5" }, { "expression": { "id": 3149, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3145, "name": "_owners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2593, "src": "9190:7:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 3147, "indexExpression": { "id": 3146, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3109, "src": "9198:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9190:16:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 3148, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3107, "src": "9209:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "9190:21:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 3150, "nodeType": "ExpressionStatement", "src": "9190:21:5" }, { "eventCall": { "arguments": [ { "arguments": [ { "hexValue": "30", "id": 3154, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9244:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3153, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9236:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3152, "name": "address", "nodeType": "ElementaryTypeName", "src": "9236:7:5", "typeDescriptions": {} } }, "id": 3155, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9236:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3156, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3107, "src": "9248:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3157, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3109, "src": "9252:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3151, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3396, "src": "9227:8:5", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3158, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9227:33:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3159, "nodeType": "EmitStatement", "src": "9222:38:5" } ] }, "documentation": { "id": 3105, "nodeType": "StructuredDocumentation", "src": "8579:311:5", "text": " @dev Mints `tokenId` and transfers it to `to`.\n WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible\n Requirements:\n - `tokenId` must not exist.\n - `to` cannot be the zero address.\n Emits a {Transfer} event." }, "id": 3161, "implemented": true, "kind": "function", "modifiers": [], "name": "_mint", "nodeType": "FunctionDefinition", "parameters": { "id": 3110, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3107, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3161, "src": "8910:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3106, "name": "address", "nodeType": "ElementaryTypeName", "src": "8910:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3109, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3161, "src": "8922:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3108, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8922:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "8909:29:5" }, "returnParameters": { "id": 3111, "nodeType": "ParameterList", "parameters": [], "src": "8956:0:5" }, "scope": 3381, "src": "8895:372:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3211, "nodeType": "Block", "src": "9533:299:5", "statements": [ { "assignments": [ 3168 ], "declarations": [ { "constant": false, "id": 3168, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "scope": 3211, "src": "9543:13:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3167, "name": "address", "nodeType": "ElementaryTypeName", "src": "9543:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "id": 3173, "initialValue": { "arguments": [ { "id": 3171, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3164, "src": "9574:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 3169, "name": "ERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3381, "src": "9559:6:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721_$3381_$", "typeString": "type(contract ERC721)" } }, "id": 3170, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "ownerOf", "nodeType": "MemberAccess", "referencedDeclaration": 2707, "src": "9559:14:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 3172, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9559:23:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "VariableDeclarationStatement", "src": "9543:39:5" }, { "expression": { "arguments": [ { "id": 3175, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3168, "src": "9614:5:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "arguments": [ { "hexValue": "30", "id": 3178, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9629:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3177, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9621:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3176, "name": "address", "nodeType": "ElementaryTypeName", "src": "9621:7:5", "typeDescriptions": {} } }, "id": 3179, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9621:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3180, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3164, "src": "9633:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3174, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3380, "src": "9593:20:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3181, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9593:48:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3182, "nodeType": "ExpressionStatement", "src": "9593:48:5" }, { "expression": { "arguments": [ { "arguments": [ { "hexValue": "30", "id": 3186, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9696:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3185, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9688:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3184, "name": "address", "nodeType": "ElementaryTypeName", "src": "9688:7:5", "typeDescriptions": {} } }, "id": 3187, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9688:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3188, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3164, "src": "9700:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3183, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3305, "src": "9679:8:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 3189, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9679:29:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3190, "nodeType": "ExpressionStatement", "src": "9679:29:5" }, { "expression": { "id": 3195, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3191, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2597, "src": "9719:9:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 3193, "indexExpression": { "id": 3192, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3168, "src": "9729:5:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9719:16:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "-=", "rightHandSide": { "hexValue": "31", "id": 3194, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9739:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "9719:21:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3196, "nodeType": "ExpressionStatement", "src": "9719:21:5" }, { "expression": { "id": 3200, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "delete", "prefix": true, "src": "9750:23:5", "subExpression": { "baseExpression": { "id": 3197, "name": "_owners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2593, "src": "9757:7:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 3199, "indexExpression": { "id": 3198, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3164, "src": "9765:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "9757:16:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3201, "nodeType": "ExpressionStatement", "src": "9750:23:5" }, { "eventCall": { "arguments": [ { "id": 3203, "name": "owner", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3168, "src": "9798:5:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "arguments": [ { "hexValue": "30", "id": 3206, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9813:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3205, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "9805:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3204, "name": "address", "nodeType": "ElementaryTypeName", "src": "9805:7:5", "typeDescriptions": {} } }, "id": 3207, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9805:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3208, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3164, "src": "9817:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3202, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3396, "src": "9789:8:5", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3209, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9789:36:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3210, "nodeType": "EmitStatement", "src": "9784:41:5" } ] }, "documentation": { "id": 3162, "nodeType": "StructuredDocumentation", "src": "9273:206:5", "text": " @dev Destroys `tokenId`.\n The approval is cleared when the token is burned.\n Requirements:\n - `tokenId` must exist.\n Emits a {Transfer} event." }, "id": 3212, "implemented": true, "kind": "function", "modifiers": [], "name": "_burn", "nodeType": "FunctionDefinition", "parameters": { "id": 3165, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3164, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3212, "src": "9499:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3163, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9499:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "9498:17:5" }, "returnParameters": { "id": 3166, "nodeType": "ParameterList", "parameters": [], "src": "9533:0:5" }, "scope": 3381, "src": "9484:348:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3280, "nodeType": "Block", "src": "10235:451:5", "statements": [ { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3228, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "id": 3225, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3219, "src": "10268:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 3223, "name": "ERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3381, "src": "10253:6:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721_$3381_$", "typeString": "type(contract ERC721)" } }, "id": 3224, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "ownerOf", "nodeType": "MemberAccess", "referencedDeclaration": 2707, "src": "10253:14:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 3226, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10253:23:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "id": 3227, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3215, "src": "10280:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "10253:31:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a207472616e73666572206f6620746f6b656e2074686174206973206e6f74206f776e", "id": 3229, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "10286:43:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_a01073130a885d6c1c1af6ac75fc3b1c4f9403c235362962bbf528e2bd87d950", "typeString": "literal_string \"ERC721: transfer of token that is not own\"" }, "value": "ERC721: transfer of token that is not own" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_a01073130a885d6c1c1af6ac75fc3b1c4f9403c235362962bbf528e2bd87d950", "typeString": "literal_string \"ERC721: transfer of token that is not own\"" } ], "id": 3222, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "10245:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3230, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10245:85:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3231, "nodeType": "ExpressionStatement", "src": "10245:85:5" }, { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_address", "typeString": "address" }, "id": 3238, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 3233, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3217, "src": "10348:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "arguments": [ { "hexValue": "30", "id": 3236, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10362:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3235, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "10354:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3234, "name": "address", "nodeType": "ElementaryTypeName", "src": "10354:7:5", "typeDescriptions": {} } }, "id": 3237, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10354:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "10348:16:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "4552433732313a207472616e7366657220746f20746865207a65726f2061646472657373", "id": 3239, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "10366:38:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_455fea98ea03c32d7dd1a6f1426917d80529bf47b3ccbde74e7206e889e709f4", "typeString": "literal_string \"ERC721: transfer to the zero address\"" }, "value": "ERC721: transfer to the zero address" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_455fea98ea03c32d7dd1a6f1426917d80529bf47b3ccbde74e7206e889e709f4", "typeString": "literal_string \"ERC721: transfer to the zero address\"" } ], "id": 3232, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "10340:7:5", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 3240, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10340:65:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3241, "nodeType": "ExpressionStatement", "src": "10340:65:5" }, { "expression": { "arguments": [ { "id": 3243, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3215, "src": "10437:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3244, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3217, "src": "10443:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3245, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3219, "src": "10447:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3242, "name": "_beforeTokenTransfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3380, "src": "10416:20:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3246, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10416:39:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3247, "nodeType": "ExpressionStatement", "src": "10416:39:5" }, { "expression": { "arguments": [ { "arguments": [ { "hexValue": "30", "id": 3251, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10534:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" } ], "id": 3250, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "10526:7:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 3249, "name": "address", "nodeType": "ElementaryTypeName", "src": "10526:7:5", "typeDescriptions": {} } }, "id": 3252, "isConstant": false, "isLValue": false, "isPure": true, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10526:10:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3253, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3219, "src": "10538:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3248, "name": "_approve", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3305, "src": "10517:8:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 3254, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10517:29:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3255, "nodeType": "ExpressionStatement", "src": "10517:29:5" }, { "expression": { "id": 3260, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3256, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2597, "src": "10557:9:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 3258, "indexExpression": { "id": 3257, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3215, "src": "10567:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "10557:15:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "-=", "rightHandSide": { "hexValue": "31", "id": 3259, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10576:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "10557:20:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3261, "nodeType": "ExpressionStatement", "src": "10557:20:5" }, { "expression": { "id": 3266, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3262, "name": "_balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2597, "src": "10587:9:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 3264, "indexExpression": { "id": 3263, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3217, "src": "10597:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "10587:13:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "hexValue": "31", "id": 3265, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "10604:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "10587:18:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3267, "nodeType": "ExpressionStatement", "src": "10587:18:5" }, { "expression": { "id": 3272, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3268, "name": "_owners", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2593, "src": "10615:7:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 3270, "indexExpression": { "id": 3269, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3219, "src": "10623:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "10615:16:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 3271, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3217, "src": "10634:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "10615:21:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 3273, "nodeType": "ExpressionStatement", "src": "10615:21:5" }, { "eventCall": { "arguments": [ { "id": 3275, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3215, "src": "10661:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3276, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3217, "src": "10667:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3277, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3219, "src": "10671:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3274, "name": "Transfer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3396, "src": "10652:8:5", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3278, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10652:27:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3279, "nodeType": "EmitStatement", "src": "10647:32:5" } ] }, "documentation": { "id": 3213, "nodeType": "StructuredDocumentation", "src": "9838:313:5", "text": " @dev Transfers `tokenId` from `from` to `to`.\n As opposed to {transferFrom}, this imposes no restrictions on msg.sender.\n Requirements:\n - `to` cannot be the zero address.\n - `tokenId` token must be owned by `from`.\n Emits a {Transfer} event." }, "id": 3281, "implemented": true, "kind": "function", "modifiers": [], "name": "_transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 3220, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3215, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 3281, "src": "10175:12:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3214, "name": "address", "nodeType": "ElementaryTypeName", "src": "10175:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3217, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3281, "src": "10189:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3216, "name": "address", "nodeType": "ElementaryTypeName", "src": "10189:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3219, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3281, "src": "10201:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3218, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10201:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "10174:43:5" }, "returnParameters": { "id": 3221, "nodeType": "ParameterList", "parameters": [], "src": "10235:0:5" }, "scope": 3381, "src": "10156:530:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3304, "nodeType": "Block", "src": "10861:107:5", "statements": [ { "expression": { "id": 3293, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 3289, "name": "_tokenApprovals", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2601, "src": "10871:15:5", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_uint256_$_t_address_$", "typeString": "mapping(uint256 => address)" } }, "id": 3291, "indexExpression": { "id": 3290, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3286, "src": "10887:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "10871:24:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 3292, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3284, "src": "10898:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "src": "10871:29:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 3294, "nodeType": "ExpressionStatement", "src": "10871:29:5" }, { "eventCall": { "arguments": [ { "arguments": [ { "id": 3298, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3286, "src": "10939:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 3296, "name": "ERC721", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3381, "src": "10924:6:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_ERC721_$3381_$", "typeString": "type(contract ERC721)" } }, "id": 3297, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "ownerOf", "nodeType": "MemberAccess", "referencedDeclaration": 2707, "src": "10924:14:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_uint256_$returns$_t_address_$", "typeString": "function (uint256) view returns (address)" } }, "id": 3299, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10924:23:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3300, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3284, "src": "10949:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3301, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3286, "src": "10953:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3295, "name": "Approval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3405, "src": "10915:8:5", "typeDescriptions": { "typeIdentifier": "t_function_event_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 3302, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "10915:46:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3303, "nodeType": "EmitStatement", "src": "10910:51:5" } ] }, "documentation": { "id": 3282, "nodeType": "StructuredDocumentation", "src": "10692:100:5", "text": " @dev Approve `to` to operate on `tokenId`\n Emits a {Approval} event." }, "id": 3305, "implemented": true, "kind": "function", "modifiers": [], "name": "_approve", "nodeType": "FunctionDefinition", "parameters": { "id": 3287, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3284, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3305, "src": "10815:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3283, "name": "address", "nodeType": "ElementaryTypeName", "src": "10815:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3286, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3305, "src": "10827:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3285, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10827:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "10814:29:5" }, "returnParameters": { "id": 3288, "nodeType": "ParameterList", "parameters": [], "src": "10861:0:5" }, "scope": 3381, "src": "10797:171:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" }, { "body": { "id": 3368, "nodeType": "Block", "src": "11651:694:5", "statements": [ { "condition": { "arguments": [], "expression": { "argumentTypes": [], "expression": { "id": 3319, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3310, "src": "11665:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "id": 3320, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "isContract", "nodeType": "MemberAccess", "referencedDeclaration": 3721, "src": "11665:13:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$_t_address_$returns$_t_bool_$bound_to$_t_address_$", "typeString": "function (address) view returns (bool)" } }, "id": 3321, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11665:15:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 3366, "nodeType": "Block", "src": "12303:36:5", "statements": [ { "expression": { "hexValue": "74727565", "id": 3364, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "12324:4:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "functionReturnParameters": 3318, "id": 3365, "nodeType": "Return", "src": "12317:11:5" } ] }, "id": 3367, "nodeType": "IfStatement", "src": "11661:678:5", "trueBody": { "id": 3363, "nodeType": "Block", "src": "11682:615:5", "statements": [ { "clauses": [ { "block": { "id": 3343, "nodeType": "Block", "src": "11797:95:5", "statements": [ { "expression": { "commonType": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "id": 3341, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 3335, "name": "retval", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3333, "src": "11822:6:5", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "expression": { "expression": { "arguments": [ { "id": 3337, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3310, "src": "11848:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 3336, "name": "IERC721Receiver", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3515, "src": "11832:15:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC721Receiver_$3515_$", "typeString": "type(contract IERC721Receiver)" } }, "id": 3338, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11832:19:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_contract$_IERC721Receiver_$3515", "typeString": "contract IERC721Receiver" } }, "id": 3339, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "onERC721Received", "nodeType": "MemberAccess", "referencedDeclaration": 3514, "src": "11832:36:5", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bytes4_$", "typeString": "function (address,address,uint256,bytes memory) external returns (bytes4)" } }, "id": 3340, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "src": "11832:45:5", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "src": "11822:55:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "functionReturnParameters": 3318, "id": 3342, "nodeType": "Return", "src": "11815:62:5" } ] }, "errorName": "", "id": 3344, "nodeType": "TryCatchClause", "parameters": { "id": 3334, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3333, "mutability": "mutable", "name": "retval", "nodeType": "VariableDeclaration", "scope": 3344, "src": "11782:13:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, "typeName": { "id": 3332, "name": "bytes4", "nodeType": "ElementaryTypeName", "src": "11782:6:5", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "visibility": "internal" } ], "src": "11781:15:5" }, "src": "11773:119:5" }, { "block": { "id": 3360, "nodeType": "Block", "src": "11921:366:5", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3351, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "id": 3348, "name": "reason", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3346, "src": "11943:6:5", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 3349, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "11943:13:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "30", "id": 3350, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "11960:1:5", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "11943:18:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 3358, "nodeType": "Block", "src": "12070:203:5", "statements": [ { "AST": { "nodeType": "YulBlock", "src": "12169:86:5", "statements": [ { "expression": { "arguments": [ { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "12206:2:5", "type": "", "value": "32" }, { "name": "reason", "nodeType": "YulIdentifier", "src": "12210:6:5" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "12202:3:5" }, "nodeType": "YulFunctionCall", "src": "12202:15:5" }, { "arguments": [ { "name": "reason", "nodeType": "YulIdentifier", "src": "12225:6:5" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "12219:5:5" }, "nodeType": "YulFunctionCall", "src": "12219:13:5" } ], "functionName": { "name": "revert", "nodeType": "YulIdentifier", "src": "12195:6:5" }, "nodeType": "YulFunctionCall", "src": "12195:38:5" }, "nodeType": "YulExpressionStatement", "src": "12195:38:5" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 3346, "isOffset": false, "isSlot": false, "src": "12210:6:5", "valueSize": 1 }, { "declaration": 3346, "isOffset": false, "isSlot": false, "src": "12225:6:5", "valueSize": 1 } ], "id": 3357, "nodeType": "InlineAssembly", "src": "12160:95:5" } ] }, "id": 3359, "nodeType": "IfStatement", "src": "11939:334:5", "trueBody": { "id": 3356, "nodeType": "Block", "src": "11963:101:5", "statements": [ { "expression": { "arguments": [ { "hexValue": "4552433732313a207472616e7366657220746f206e6f6e20455243373231526563656976657220696d706c656d656e746572", "id": 3353, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "11992:52:5", "typeDescriptions": { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" }, "value": "ERC721: transfer to non ERC721Receiver implementer" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_1e766a06da43a53d0f4c380e06e5a342e14d5af1bf8501996c844905530ca84e", "typeString": "literal_string \"ERC721: transfer to non ERC721Receiver implementer\"" } ], "id": 3352, "name": "revert", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967277, 4294967277 ], "referencedDeclaration": 4294967277, "src": "11985:6:5", "typeDescriptions": { "typeIdentifier": "t_function_revert_pure$_t_string_memory_ptr_$returns$__$", "typeString": "function (string memory) pure" } }, "id": 3354, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11985:60:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3355, "nodeType": "ExpressionStatement", "src": "11985:60:5" } ] } } ] }, "errorName": "", "id": 3361, "nodeType": "TryCatchClause", "parameters": { "id": 3347, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3346, "mutability": "mutable", "name": "reason", "nodeType": "VariableDeclaration", "scope": 3361, "src": "11900:19:5", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 3345, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "11900:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "11899:21:5" }, "src": "11893:394:5" } ], "externalCall": { "arguments": [ { "arguments": [], "expression": { "argumentTypes": [], "id": 3326, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4008, "src": "11737:10:5", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 3327, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11737:12:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3328, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3308, "src": "11751:4:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 3329, "name": "tokenId", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3312, "src": "11757:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 3330, "name": "_data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3314, "src": "11766:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "arguments": [ { "id": 3323, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3310, "src": "11716:2:5", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 3322, "name": "IERC721Receiver", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3515, "src": "11700:15:5", "typeDescriptions": { "typeIdentifier": "t_type$_t_contract$_IERC721Receiver_$3515_$", "typeString": "type(contract IERC721Receiver)" } }, "id": 3324, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11700:19:5", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_contract$_IERC721Receiver_$3515", "typeString": "contract IERC721Receiver" } }, "id": 3325, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "onERC721Received", "nodeType": "MemberAccess", "referencedDeclaration": 3514, "src": "11700:36:5", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$_t_bytes_memory_ptr_$returns$_t_bytes4_$", "typeString": "function (address,address,uint256,bytes memory) external returns (bytes4)" } }, "id": 3331, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11700:72:5", "tryCall": true, "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, "id": 3362, "nodeType": "TryStatement", "src": "11696:591:5" } ] } } ] }, "documentation": { "id": 3306, "nodeType": "StructuredDocumentation", "src": "10974:542:5", "text": " @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.\n The call is not executed if the target address is not a contract.\n @param from address representing the previous owner of the given token ID\n @param to target address that will receive the tokens\n @param tokenId uint256 ID of the token to be transferred\n @param _data bytes optional data to send along with the call\n @return bool whether the call correctly returned the expected magic value" }, "id": 3369, "implemented": true, "kind": "function", "modifiers": [], "name": "_checkOnERC721Received", "nodeType": "FunctionDefinition", "parameters": { "id": 3315, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3308, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 3369, "src": "11553:12:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3307, "name": "address", "nodeType": "ElementaryTypeName", "src": "11553:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3310, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3369, "src": "11567:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3309, "name": "address", "nodeType": "ElementaryTypeName", "src": "11567:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3312, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3369, "src": "11579:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3311, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11579:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 3314, "mutability": "mutable", "name": "_data", "nodeType": "VariableDeclaration", "scope": 3369, "src": "11596:18:5", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 3313, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "11596:5:5", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "11552:63:5" }, "returnParameters": { "id": 3318, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3317, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 3369, "src": "11641:4:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 3316, "name": "bool", "nodeType": "ElementaryTypeName", "src": "11641:4:5", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "11640:6:5" }, "scope": 3381, "src": "11521:824:5", "stateMutability": "nonpayable", "virtual": false, "visibility": "private" }, { "body": { "id": 3379, "nodeType": "Block", "src": "13031:3:5", "statements": [] }, "documentation": { "id": 3370, "nodeType": "StructuredDocumentation", "src": "12351:585:5", "text": " @dev Hook that is called before any token transfer. This includes minting\n and burning.\n Calling conditions:\n - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be\n transferred to `to`.\n - When `from` is zero, `tokenId` will be minted for `to`.\n - When `to` is zero, ``from``'s `tokenId` will be burned.\n - `from` cannot be the zero address.\n - `to` cannot be the zero address.\n To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]." }, "id": 3380, "implemented": true, "kind": "function", "modifiers": [], "name": "_beforeTokenTransfer", "nodeType": "FunctionDefinition", "parameters": { "id": 3377, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3372, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 3380, "src": "12971:12:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3371, "name": "address", "nodeType": "ElementaryTypeName", "src": "12971:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3374, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 3380, "src": "12985:10:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 3373, "name": "address", "nodeType": "ElementaryTypeName", "src": "12985:7:5", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 3376, "mutability": "mutable", "name": "tokenId", "nodeType": "VariableDeclaration", "scope": 3380, "src": "12997:15:5", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3375, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12997:7:5", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "12970:43:5" }, "returnParameters": { "id": 3378, "nodeType": "ParameterList", "parameters": [], "src": "13031:0:5" }, "scope": 3381, "src": "12941:93:5", "stateMutability": "nonpayable", "virtual": true, "visibility": "internal" } ], "scope": 3382, "src": "599:12437:5" } ], "src": "33:13004:5" }, "compiler": { "name": "solc", "version": "0.8.0+commit.c7dfd78e.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.3.4", "updatedAt": "2021-05-19T08:21:33.574Z", "devdoc": { "details": "Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including the Metadata extension, but not including the Enumerable extension, which is available separately as {ERC721Enumerable}.", "kind": "dev", "methods": { "approve(address,uint256)": { "details": "See {IERC721-approve}." }, "balanceOf(address)": { "details": "See {IERC721-balanceOf}." }, "constructor": { "details": "Initializes the contract by setting a `name` and a `symbol` to the token collection." }, "getApproved(uint256)": { "details": "See {IERC721-getApproved}." }, "isApprovedForAll(address,address)": { "details": "See {IERC721-isApprovedForAll}." }, "name()": { "details": "See {IERC721Metadata-name}." }, "ownerOf(uint256)": { "details": "See {IERC721-ownerOf}." }, "safeTransferFrom(address,address,uint256)": { "details": "See {IERC721-safeTransferFrom}." }, "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}." } }, "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 } }