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0.8.24+commit.e11b9ed9
文件 1 的 6：DN404.sol
pragma solidity ^0.8.4;
abstract contract DN404 {
event Transfer(address indexed from, address indexed to, uint256 amount);
event Approval(address indexed owner, address indexed spender, uint256 amount);
event SkipNFTSet(address indexed target, bool status);
uint256 private constant _TRANSFER_EVENT_SIGNATURE =
0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;
uint256 private constant _APPROVAL_EVENT_SIGNATURE =
0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925;
uint256 private constant _SKIP_NFT_SET_EVENT_SIGNATURE =
0xb5a1de456fff688115a4f75380060c23c8532d14ff85f687cc871456d6420393;
error DNAlreadyInitialized();
error InsufficientBalance();
error InsufficientAllowance();
error TotalSupplyOverflow();
error UnitIsZero();
error SenderNotMirror();
error TransferToZeroAddress();
error MirrorAddressIsZero();
error LinkMirrorContractFailed();
error ApprovalCallerNotOwnerNorApproved();
error TransferCallerNotOwnerNorApproved();
error TransferFromIncorrectOwner();
error TokenDoesNotExist();
error FnSelectorNotRecognized();
uint8 internal constant _ADDRESS_DATA_INITIALIZED_FLAG = 1 << 0;
uint8 internal constant _ADDRESS_DATA_SKIP_NFT_FLAG = 1 << 1;
uint8 internal constant _ADDRESS_DATA_OVERRIDE_PERMIT2_FLAG = 1 << 2;
address internal constant _PERMIT2 = 0x000000000022D473030F116dDEE9F6B43aC78BA3;
struct AddressData {
uint88 aux;
uint8 flags;
uint32 addressAlias;
uint32 ownedLength;
uint96 balance;
}
struct Uint32Map {
uint256 spacer;
}
struct Bitmap {
uint256 spacer;
}
struct Uint256Ref {
uint256 value;
}
struct AddressPairToUint256RefMap {
uint256 spacer;
}
struct DN404Storage {
uint32 numAliases;
uint32 nextTokenId;
uint32 burnedPoolHead;
uint32 burnedPoolTail;
uint32 totalNFTSupply;
uint96 totalSupply;
address mirrorERC721;
mapping(uint32 => address) aliasToAddress;
AddressPairToUint256RefMap operatorApprovals;
mapping(uint256 => address) nftApprovals;
Bitmap mayHaveNFTApproval;
Bitmap exists;
AddressPairToUint256RefMap allowance;
mapping(address => Uint32Map) owned;
Uint32Map burnedPool;
Uint32Map oo;
mapping(address => AddressData) addressData;
}
function _getDN404Storage() internal pure virtual returns (DN404Storage storage $) {
assembly {
$.slot := 0xa20d6e21d0e5255308
}
}
function _initializeDN404(
uint256 initialTokenSupply,
address initialSupplyOwner,
address mirror
) internal virtual {
DN404Storage storage $ = _getDN404Storage();
if ($.nextTokenId != 0) revert DNAlreadyInitialized();
if (mirror == address(0)) revert MirrorAddressIsZero();
assembly {
mstore(0x00, 0x0f4599e5)
mstore(0x20, caller())
if iszero(and(eq(mload(0x00), 1), call(gas(), mirror, 0, 0x1c, 0x24, 0x00, 0x20))) {
mstore(0x00, 0xd125259c)
revert(0x1c, 0x04)
}
}
$.nextTokenId = 1;
$.mirrorERC721 = mirror;
if (_unit() == 0) revert UnitIsZero();
if (initialTokenSupply != 0) {
if (initialSupplyOwner == address(0)) revert TransferToZeroAddress();
if (_totalSupplyOverflows(initialTokenSupply)) revert TotalSupplyOverflow();
$.totalSupply = uint96(initialTokenSupply);
AddressData storage initialOwnerAddressData = _addressData(initialSupplyOwner);
initialOwnerAddressData.balance = uint96(initialTokenSupply);
assembly {
mstore(0x00, initialTokenSupply)
log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, 0, shr(96, shl(96, initialSupplyOwner)))
}
_setSkipNFT(initialSupplyOwner, true);
}
}
function _unit() internal view virtual returns (uint256) {
return 10 ** 18;
}
function name() public view virtual returns (string memory);
function symbol() public view virtual returns (string memory);
function tokenURI(uint256 id) public view virtual returns (string memory);
function decimals() public pure returns (uint8) {
return 18;
}
function totalSupply() public view virtual returns (uint256) {
return uint256(_getDN404Storage().totalSupply);
}
function balanceOf(address owner) public view virtual returns (uint256) {
return _getDN404Storage().addressData[owner].balance;
}
function allowance(address owner, address spender) public view returns (uint256) {
if (_givePermit2DefaultInfiniteAllowance() && spender == _PERMIT2) {
uint8 flags = _getDN404Storage().addressData[owner].flags;
if (flags & _ADDRESS_DATA_OVERRIDE_PERMIT2_FLAG == 0) return type(uint256).max;
}
return _ref(_getDN404Storage().allowance, owner, spender).value;
}
function approve(address spender, uint256 amount) public virtual returns (bool) {
_approve(msg.sender, spender, amount);
return true;
}
function transfer(address to, uint256 amount) public virtual returns (bool) {
_transfer(msg.sender, to, amount);
return true;
}
function transferFrom(address from, address to, uint256 amount) public virtual returns (bool) {
Uint256Ref storage a = _ref(_getDN404Storage().allowance, from, msg.sender);
uint256 allowed = _givePermit2DefaultInfiniteAllowance() && msg.sender == _PERMIT2
&& (_getDN404Storage().addressData[from].flags & _ADDRESS_DATA_OVERRIDE_PERMIT2_FLAG) == 0
? type(uint256).max
: a.value;
if (allowed != type(uint256).max) {
if (amount > allowed) revert InsufficientAllowance();
unchecked {
a.value = allowed - amount;
}
}
_transfer(from, to, amount);
return true;
}
function _givePermit2DefaultInfiniteAllowance() internal view virtual returns (bool) {
return false;
}
function _mint(address to, uint256 amount) internal virtual {
if (to == address(0)) revert TransferToZeroAddress();
AddressData storage toAddressData = _addressData(to);
DN404Storage storage $ = _getDN404Storage();
_DNMintTemps memory t;
unchecked {
uint256 toBalance = uint256(toAddressData.balance) + amount;
toAddressData.balance = uint96(toBalance);
t.toEnd = toBalance / _unit();
}
uint256 maxId;
unchecked {
uint256 totalSupply_ = uint256($.totalSupply) + amount;
$.totalSupply = uint96(totalSupply_);
uint256 overflows = _toUint(_totalSupplyOverflows(totalSupply_));
if (overflows | _toUint(totalSupply_ < amount) != 0) revert TotalSupplyOverflow();
maxId = totalSupply_ / _unit();
}
unchecked {
if (toAddressData.flags & _ADDRESS_DATA_SKIP_NFT_FLAG == 0) {
Uint32Map storage toOwned = $.owned[to];
Uint32Map storage oo = $.oo;
uint256 toIndex = toAddressData.ownedLength;
_PackedLogs memory packedLogs = _packedLogsMalloc(_zeroFloorSub(t.toEnd, toIndex));
if (packedLogs.logs.length != 0) {
_packedLogsSet(packedLogs, to, 0);
$.totalNFTSupply += uint32(packedLogs.logs.length);
toAddressData.ownedLength = uint32(t.toEnd);
t.toAlias = _registerAndResolveAlias(toAddressData, to);
uint32 burnedPoolHead = $.burnedPoolHead;
uint32 burnedPoolTail = $.burnedPoolTail;
uint256 nextTokenId = $.nextTokenId;
do {
uint256 id;
if (burnedPoolHead != burnedPoolTail) {
id = _get($.burnedPool, burnedPoolHead++);
} else {
id = nextTokenId;
while (_get(oo, _ownershipIndex(id)) != 0) {
id = _useExistsLookup()
? _wrapNFTId(_findFirstUnset($.exists, id + 1, maxId + 1), maxId)
: _wrapNFTId(id + 1, maxId);
}
nextTokenId = _wrapNFTId(id + 1, maxId);
}
if (_useExistsLookup()) _set($.exists, id, true);
_set(toOwned, toIndex, uint32(id));
_setOwnerAliasAndOwnedIndex(oo, id, t.toAlias, uint32(toIndex++));
_packedLogsAppend(packedLogs, id);
} while (toIndex != t.toEnd);
$.nextTokenId = uint32(nextTokenId);
$.burnedPoolHead = burnedPoolHead;
_packedLogsSend(packedLogs, $.mirrorERC721);
}
}
}
assembly {
mstore(0x00, amount)
log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, 0, shr(96, shl(96, to)))
}
}
function _burn(address from, uint256 amount) internal virtual {
AddressData storage fromAddressData = _addressData(from);
DN404Storage storage $ = _getDN404Storage();
uint256 fromBalance = fromAddressData.balance;
if (amount > fromBalance) revert InsufficientBalance();
unchecked {
fromAddressData.balance = uint96(fromBalance -= amount);
uint256 totalSupply_ = uint256($.totalSupply) - amount;
$.totalSupply = uint96(totalSupply_);
Uint32Map storage fromOwned = $.owned[from];
uint256 fromIndex = fromAddressData.ownedLength;
uint256 numNFTBurns = _zeroFloorSub(fromIndex, fromBalance / _unit());
if (numNFTBurns != 0) {
_PackedLogs memory packedLogs = _packedLogsMalloc(numNFTBurns);
_packedLogsSet(packedLogs, from, 1);
uint256 totalNFTSupply = uint256($.totalNFTSupply) - numNFTBurns;
$.totalNFTSupply = uint32(totalNFTSupply);
bool addToBurnedPool = _addToBurnedPool(totalNFTSupply, totalSupply_);
Uint32Map storage oo = $.oo;
uint256 fromEnd = fromIndex - numNFTBurns;
fromAddressData.ownedLength = uint32(fromEnd);
uint32 burnedPoolTail = $.burnedPoolTail;
do {
uint256 id = _get(fromOwned, --fromIndex);
_setOwnerAliasAndOwnedIndex(oo, id, 0, 0);
_packedLogsAppend(packedLogs, id);
if (_useExistsLookup()) _set($.exists, id, false);
if (addToBurnedPool) _set($.burnedPool, burnedPoolTail++, uint32(id));
if (_get($.mayHaveNFTApproval, id)) {
_set($.mayHaveNFTApproval, id, false);
delete $.nftApprovals[id];
}
} while (fromIndex != fromEnd);
if (addToBurnedPool) $.burnedPoolTail = burnedPoolTail;
_packedLogsSend(packedLogs, $.mirrorERC721);
}
}
assembly {
mstore(0x00, amount)
log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, shl(96, from)), 0)
}
}
function _transfer(address from, address to, uint256 amount) internal virtual {
if (to == address(0)) revert TransferToZeroAddress();
AddressData storage fromAddressData = _addressData(from);
AddressData storage toAddressData = _addressData(to);
DN404Storage storage $ = _getDN404Storage();
_DNTransferTemps memory t;
t.fromOwnedLength = fromAddressData.ownedLength;
t.toOwnedLength = toAddressData.ownedLength;
t.totalSupply = $.totalSupply;
if (amount > (t.fromBalance = fromAddressData.balance)) revert InsufficientBalance();
unchecked {
fromAddressData.balance = uint96(t.fromBalance -= amount);
toAddressData.balance = uint96(t.toBalance = uint256(toAddressData.balance) + amount);
t.numNFTBurns = _zeroFloorSub(t.fromOwnedLength, t.fromBalance / _unit());
if (toAddressData.flags & _ADDRESS_DATA_SKIP_NFT_FLAG == 0) {
if (from == to) t.toOwnedLength = t.fromOwnedLength - t.numNFTBurns;
t.numNFTMints = _zeroFloorSub(t.toBalance / _unit(), t.toOwnedLength);
}
t.totalNFTSupply = uint256($.totalNFTSupply) + t.numNFTMints - t.numNFTBurns;
$.totalNFTSupply = uint32(t.totalNFTSupply);
_PackedLogs memory packedLogs = _packedLogsMalloc(t.numNFTBurns + t.numNFTMints);
Uint32Map storage oo = $.oo;
t.burnedPoolTail = $.burnedPoolTail;
if (t.numNFTBurns != 0) {
_packedLogsSet(packedLogs, from, 1);
bool addToBurnedPool = _addToBurnedPool(t.totalNFTSupply, t.totalSupply);
Uint32Map storage fromOwned = $.owned[from];
uint256 fromIndex = t.fromOwnedLength;
fromAddressData.ownedLength = uint32(t.fromEnd = fromIndex - t.numNFTBurns);
uint32 burnedPoolTail = t.burnedPoolTail;
do {
uint256 id = _get(fromOwned, --fromIndex);
_setOwnerAliasAndOwnedIndex(oo, id, 0, 0);
_packedLogsAppend(packedLogs, id);
if (_useExistsLookup()) _set($.exists, id, false);
if (addToBurnedPool) _set($.burnedPool, burnedPoolTail++, uint32(id));
if (_get($.mayHaveNFTApproval, id)) {
_set($.mayHaveNFTApproval, id, false);
delete $.nftApprovals[id];
}
} while (fromIndex != t.fromEnd);
if (addToBurnedPool) $.burnedPoolTail = (t.burnedPoolTail = burnedPoolTail);
}
if (t.numNFTMints != 0) {
_packedLogsSet(packedLogs, to, 0);
t.nextTokenId = $.nextTokenId;
Uint32Map storage toOwned = $.owned[to];
t.toAlias = _registerAndResolveAlias(toAddressData, to);
uint256 maxId = t.totalSupply / _unit();
uint256 toIndex = t.toOwnedLength;
toAddressData.ownedLength = uint32(t.toEnd = toIndex + t.numNFTMints);
uint32 burnedPoolHead = $.burnedPoolHead;
do {
uint256 id;
if (burnedPoolHead != t.burnedPoolTail) {
id = _get($.burnedPool, burnedPoolHead++);
} else {
id = t.nextTokenId;
while (_get(oo, _ownershipIndex(id)) != 0) {
id = _useExistsLookup()
? _wrapNFTId(_findFirstUnset($.exists, id + 1, maxId + 1), maxId)
: _wrapNFTId(id + 1, maxId);
}
t.nextTokenId = _wrapNFTId(id + 1, maxId);
}
if (_useExistsLookup()) _set($.exists, id, true);
_set(toOwned, toIndex, uint32(id));
_setOwnerAliasAndOwnedIndex(oo, id, t.toAlias, uint32(toIndex++));
_packedLogsAppend(packedLogs, id);
} while (toIndex != t.toEnd);
$.burnedPoolHead = burnedPoolHead;
$.nextTokenId = uint32(t.nextTokenId);
}
if (packedLogs.logs.length != 0) {
_packedLogsSend(packedLogs, $.mirrorERC721);
}
}
assembly {
mstore(0x00, amount)
log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, shl(96, from)), shr(96, shl(96, to)))
}
}
function _addToBurnedPool(uint256 totalNFTSupplyAfterBurn, uint256 totalSupplyAfterBurn)
internal
view
virtual
returns (bool)
{
totalNFTSupplyAfterBurn = totalNFTSupplyAfterBurn;
totalSupplyAfterBurn = totalSupplyAfterBurn;
return false;
}
function _useExistsLookup() internal pure virtual returns (bool) {
return true;
}
function _transferFromNFT(address from, address to, uint256 id, address msgSender)
internal
virtual
{
DN404Storage storage $ = _getDN404Storage();
if (to == address(0)) revert TransferToZeroAddress();
Uint32Map storage oo = $.oo;
if (from != $.aliasToAddress[_get(oo, _ownershipIndex(_restrictNFTId(id)))]) {
revert TransferFromIncorrectOwner();
}
if (msgSender != from) {
if (_ref($.operatorApprovals, from, msgSender).value == 0) {
if (msgSender != $.nftApprovals[id]) {
revert TransferCallerNotOwnerNorApproved();
}
}
}
AddressData storage fromAddressData = _addressData(from);
AddressData storage toAddressData = _addressData(to);
uint256 unit = _unit();
unchecked {
{
uint256 fromBalance = fromAddressData.balance;
if (unit > fromBalance) revert InsufficientBalance();
fromAddressData.balance = uint96(fromBalance - unit);
toAddressData.balance += uint96(unit);
}
mapping(address => Uint32Map) storage owned = $.owned;
Uint32Map storage fromOwned = owned[from];
if (_get($.mayHaveNFTApproval, id)) {
_set($.mayHaveNFTApproval, id, false);
delete $.nftApprovals[id];
}
{
uint32 updatedId = _get(fromOwned, --fromAddressData.ownedLength);
uint32 i = _get(oo, _ownedIndex(id));
_set(fromOwned, i, updatedId);
_set(oo, _ownedIndex(updatedId), i);
}
uint32 n = toAddressData.ownedLength++;
_set(owned[to], n, uint32(id));
_setOwnerAliasAndOwnedIndex(oo, id, _registerAndResolveAlias(toAddressData, to), n);
}
assembly {
mstore(0x00, unit)
log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, shl(96, from)), shr(96, shl(96, to)))
}
}
function _approve(address owner, address spender, uint256 amount) internal virtual {
if (_givePermit2DefaultInfiniteAllowance() && spender == _PERMIT2) {
_getDN404Storage().addressData[owner].flags |= _ADDRESS_DATA_OVERRIDE_PERMIT2_FLAG;
}
_ref(_getDN404Storage().allowance, owner, spender).value = amount;
assembly {
mstore(0x00, amount)
log3(0x00, 0x20, _APPROVAL_EVENT_SIGNATURE, shr(96, shl(96, owner)), shr(96, shl(96, spender)))
}
}
function _getAux(address owner) internal view virtual returns (uint88) {
return _getDN404Storage().addressData[owner].aux;
}
function _setAux(address owner, uint88 value) internal virtual {
_getDN404Storage().addressData[owner].aux = value;
}
function getSkipNFT(address owner) public view virtual returns (bool) {
AddressData storage d = _getDN404Storage().addressData[owner];
if (d.flags & _ADDRESS_DATA_INITIALIZED_FLAG == 0) return _hasCode(owner);
return d.flags & _ADDRESS_DATA_SKIP_NFT_FLAG != 0;
}
function setSkipNFT(bool skipNFT) public virtual returns (bool) {
_setSkipNFT(msg.sender, skipNFT);
return true;
}
function _setSkipNFT(address owner, bool state) internal virtual {
AddressData storage d = _addressData(owner);
if ((d.flags & _ADDRESS_DATA_SKIP_NFT_FLAG != 0) != state) {
d.flags ^= _ADDRESS_DATA_SKIP_NFT_FLAG;
}
assembly {
mstore(0x00, iszero(iszero(state)))
log2(0x00, 0x20, _SKIP_NFT_SET_EVENT_SIGNATURE, shr(96, shl(96, owner)))
}
}
function _addressData(address owner) internal virtual returns (AddressData storage d) {
d = _getDN404Storage().addressData[owner];
unchecked {
if (d.flags & _ADDRESS_DATA_INITIALIZED_FLAG == 0) {
uint256 skipNFT = (_toUint(_hasCode(owner)) * _ADDRESS_DATA_SKIP_NFT_FLAG);
d.flags = uint8(skipNFT | _ADDRESS_DATA_INITIALIZED_FLAG);
}
}
}
function _registerAndResolveAlias(AddressData storage toAddressData, address to)
internal
virtual
returns (uint32 addressAlias)
{
DN404Storage storage $ = _getDN404Storage();
addressAlias = toAddressData.addressAlias;
if (addressAlias == 0) {
unchecked {
addressAlias = ++$.numAliases;
}
toAddressData.addressAlias = addressAlias;
$.aliasToAddress[addressAlias] = to;
if (addressAlias == 0) revert();
}
}
function mirrorERC721() public view virtual returns (address) {
return _getDN404Storage().mirrorERC721;
}
function _totalNFTSupply() internal view virtual returns (uint256) {
return _getDN404Storage().totalNFTSupply;
}
function _balanceOfNFT(address owner) internal view virtual returns (uint256) {
return _getDN404Storage().addressData[owner].ownedLength;
}
function _ownerAt(uint256 id) internal view virtual returns (address) {
DN404Storage storage $ = _getDN404Storage();
return $.aliasToAddress[_get($.oo, _ownershipIndex(_restrictNFTId(id)))];
}
function _ownerOf(uint256 id) internal view virtual returns (address) {
if (!_exists(id)) revert TokenDoesNotExist();
return _ownerAt(id);
}
function _exists(uint256 id) internal view virtual returns (bool) {
return _ownerAt(id) != address(0);
}
function _getApproved(uint256 id) internal view virtual returns (address) {
if (!_exists(id)) revert TokenDoesNotExist();
return _getDN404Storage().nftApprovals[id];
}
function _approveNFT(address spender, uint256 id, address msgSender)
internal
virtual
returns (address owner)
{
DN404Storage storage $ = _getDN404Storage();
owner = $.aliasToAddress[_get($.oo, _ownershipIndex(_restrictNFTId(id)))];
if (msgSender != owner) {
if (_ref($.operatorApprovals, owner, msgSender).value == 0) {
revert ApprovalCallerNotOwnerNorApproved();
}
}
$.nftApprovals[id] = spender;
_set($.mayHaveNFTApproval, id, spender != address(0));
}
function _setApprovalForAll(address operator, bool approved, address msgSender)
internal
virtual
{
_ref(_getDN404Storage().operatorApprovals, msgSender, operator).value = _toUint(approved);
}
function _ownedIds(address owner, uint256 begin, uint256 end)
internal
view
virtual
returns (uint256[] memory ids)
{
DN404Storage storage $ = _getDN404Storage();
Uint32Map storage owned = $.owned[owner];
uint256 n = $.addressData[owner].ownedLength;
assembly {
n := xor(n, mul(lt(end, n), xor(end, n)))
ids := mload(0x40)
let i := begin
for {} lt(i, n) { i := add(i, 1) } {
let s := add(shl(96, owned.slot), shr(3, i))
let id := and(0xffffffff, shr(shl(5, and(i, 7)), sload(s)))
mstore(add(add(ids, 0x20), shl(5, sub(i, begin))), id)
}
mstore(ids, sub(i, begin))
mstore(0x40, add(add(ids, 0x20), shl(5, sub(i, begin))))
}
}
modifier dn404Fallback() virtual {
DN404Storage storage $ = _getDN404Storage();
uint256 fnSelector = _calldataload(0x00) >> 224;
if (fnSelector == 0xe5eb36c8) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x84) revert();
address from = address(uint160(_calldataload(0x04)));
address to = address(uint160(_calldataload(0x24)));
uint256 id = _calldataload(0x44);
address msgSender = address(uint160(_calldataload(0x64)));
_transferFromNFT(from, to, id, msgSender);
_return(1);
}
if (fnSelector == 0x813500fc) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x64) revert();
address spender = address(uint160(_calldataload(0x04)));
bool status = _calldataload(0x24) != 0;
address msgSender = address(uint160(_calldataload(0x44)));
_setApprovalForAll(spender, status, msgSender);
_return(1);
}
if (fnSelector == 0xe985e9c5) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x44) revert();
address owner = address(uint160(_calldataload(0x04)));
address operator = address(uint160(_calldataload(0x24)));
_return(_ref($.operatorApprovals, owner, operator).value);
}
if (fnSelector == 0x6352211e) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x24) revert();
uint256 id = _calldataload(0x04);
_return(uint160(_ownerOf(id)));
}
if (fnSelector == 0x24359879) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x24) revert();
uint256 id = _calldataload(0x04);
_return(uint160(_ownerAt(id)));
}
if (fnSelector == 0xd10b6e0c) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x64) revert();
address spender = address(uint160(_calldataload(0x04)));
uint256 id = _calldataload(0x24);
address msgSender = address(uint160(_calldataload(0x44)));
_return(uint160(_approveNFT(spender, id, msgSender)));
}
if (fnSelector == 0x081812fc) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x24) revert();
uint256 id = _calldataload(0x04);
_return(uint160(_getApproved(id)));
}
if (fnSelector == 0xf5b100ea) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x24) revert();
address owner = address(uint160(_calldataload(0x04)));
_return(_balanceOfNFT(owner));
}
if (fnSelector == 0xe2c79281) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x04) revert();
_return(_totalNFTSupply());
}
if (fnSelector == 0xb7a94eb8) {
_return(1);
}
_;
}
fallback() external payable virtual dn404Fallback {
revert FnSelectorNotRecognized();
}
receive() external payable virtual {
if (msg.value != 0) revert();
}
function _ownershipIndex(uint256 i) internal pure returns (uint256) {
unchecked {
return (i - 1) << 1;
}
}
function _ownedIndex(uint256 i) internal pure returns (uint256) {
unchecked {
return ((i - 1) << 1) + 1;
}
}
function _get(Uint32Map storage map, uint256 index) internal view returns (uint32 result) {
assembly {
let s := add(shl(96, map.slot), shr(3, index))
result := and(0xffffffff, shr(shl(5, and(index, 7)), sload(s)))
}
}
function _set(Uint32Map storage map, uint256 index, uint32 value) internal {
assembly {
let s := add(shl(96, map.slot), shr(3, index))
let o := shl(5, and(index, 7))
let v := sload(s)
let m := 0xffffffff
sstore(s, xor(v, shl(o, and(m, xor(shr(o, v), value)))))
}
}
function _setOwnerAliasAndOwnedIndex(
Uint32Map storage map,
uint256 id,
uint32 ownership,
uint32 ownedIndex
) internal {
assembly {
let i := sub(id, 1)
let s := add(shl(96, map.slot), shr(2, i))
let o := shl(6, and(i, 3))
let v := sload(s)
let m := 0xffffffffffffffff
let combined := or(shl(32, ownedIndex), and(0xffffffff, ownership))
sstore(s, xor(v, shl(o, and(m, xor(shr(o, v), combined)))))
}
}
function _get(Bitmap storage bitmap, uint256 index) internal view returns (bool result) {
assembly {
let s := add(shl(96, bitmap.slot), shr(8, index))
result := and(1, shr(and(0xff, index), sload(s)))
}
}
function _set(Bitmap storage bitmap, uint256 index, bool value) internal {
assembly {
let s := add(shl(96, bitmap.slot), shr(8, index))
let o := and(0xff, index)
sstore(s, or(and(sload(s), not(shl(o, 1))), shl(o, iszero(iszero(value)))))
}
}
function _findFirstUnset(Bitmap storage bitmap, uint256 begin, uint256 end)
internal
view
returns (uint256 unsetBitIndex)
{
assembly {
unsetBitIndex := not(0)
let s := shl(96, bitmap.slot)
let bucket := add(s, shr(8, begin))
let negBits := shl(and(0xff, begin), shr(and(0xff, begin), not(sload(bucket))))
if iszero(negBits) {
let lastBucket := add(s, shr(8, end))
for {} 1 {} {
bucket := add(bucket, 1)
negBits := not(sload(bucket))
if or(negBits, gt(bucket, lastBucket)) { break }
}
if gt(bucket, lastBucket) {
negBits := shr(and(0xff, not(end)), shl(and(0xff, not(end)), negBits))
}
}
if negBits {
let b := and(negBits, add(not(negBits), 1))
let r := shl(7, lt(0xffffffffffffffffffffffffffffffff, b))
r := or(r, shl(6, lt(0xffffffffffffffff, shr(r, b))))
r := or(r, shl(5, lt(0xffffffff, shr(r, b))))
r := or(r, byte(and(div(0xd76453e0, shr(r, b)), 0x1f),
0x001f0d1e100c1d070f090b19131c1706010e11080a1a141802121b1503160405))
r := or(shl(8, sub(bucket, s)), r)
unsetBitIndex := or(r, sub(0, or(iszero(lt(r, end)), lt(r, begin))))
}
}
}
function _ref(AddressPairToUint256RefMap storage map, address a0, address a1)
internal
pure
returns (Uint256Ref storage ref)
{
assembly {
mstore(0x28, a1)
mstore(0x14, a0)
mstore(0x00, map.slot)
ref.slot := keccak256(0x00, 0x48)
mstore(0x28, 0x00)
}
}
function _wrapNFTId(uint256 id, uint256 maxId) internal pure returns (uint256 result) {
assembly {
result := or(mul(iszero(gt(id, maxId)), id), gt(id, maxId))
}
}
function _restrictNFTId(uint256 id) internal pure returns (uint256 result) {
assembly {
result := mul(id, lt(id, 0x100000000))
}
}
function _totalSupplyOverflows(uint256 amount) internal view returns (bool) {
unchecked {
return _toUint(amount > type(uint96).max)
| _toUint(amount / _unit() > type(uint32).max - 1) != 0;
}
}
function _zeroFloorSub(uint256 x, uint256 y) internal pure returns (uint256 z) {
assembly {
z := mul(gt(x, y), sub(x, y))
}
}
function _toUint(bool b) internal pure returns (uint256 result) {
assembly {
result := iszero(iszero(b))
}
}
struct _PackedLogs {
uint256 offset;
uint256 addressAndBit;
uint256[] logs;
}
function _packedLogsMalloc(uint256 n) private pure returns (_PackedLogs memory p) {
assembly {
let logs := mload(0x40)
mstore(logs, n)
let offset := add(0x20, logs)
mstore(0x40, add(offset, shl(5, n)))
mstore(add(0x40, p), logs)
mstore(p, offset)
}
}
function _packedLogsSet(_PackedLogs memory p, address a, uint256 burnBit) private pure {
assembly {
mstore(add(p, 0x20), or(shl(96, a), burnBit))
}
}
function _packedLogsAppend(_PackedLogs memory p, uint256 id) private pure {
assembly {
let offset := mload(p)
mstore(offset, or(mload(add(p, 0x20)), shl(8, id)))
mstore(p, add(offset, 0x20))
}
}
function _packedLogsSend(_PackedLogs memory p, address mirror) private {
assembly {
let logs := mload(add(p, 0x40))
let o := sub(logs, 0x40)
mstore(o, 0x263c69d6)
mstore(add(o, 0x20), 0x20)
let n := add(0x44, shl(5, mload(logs)))
if iszero(and(eq(mload(o), 1), call(gas(), mirror, 0, add(o, 0x1c), n, o, 0x20))) {
revert(o, 0x00)
}
}
}
struct _DNTransferTemps {
uint256 numNFTBurns;
uint256 numNFTMints;
uint256 fromBalance;
uint256 toBalance;
uint256 fromOwnedLength;
uint256 toOwnedLength;
uint256 totalSupply;
uint256 totalNFTSupply;
uint256 fromEnd;
uint256 toEnd;
uint32 toAlias;
uint256 nextTokenId;
uint32 burnedPoolTail;
}
struct _DNMintTemps {
uint256 toEnd;
uint32 toAlias;
}
function _hasCode(address a) private view returns (bool result) {
assembly {
result := extcodesize(a)
}
}
function _calldataload(uint256 offset) private pure returns (uint256 value) {
assembly {
value := calldataload(offset)
}
}
function _return(uint256 x) private pure {
assembly {
mstore(0x00, x)
return(0x00, 0x20)
}
}
}文件 2 的 6：DN404Mirror.sol
pragma solidity ^0.8.4;
contract DN404Mirror {
event Transfer(address indexed from, address indexed to, uint256 indexed id);
event Approval(address indexed owner, address indexed account, uint256 indexed id);
event ApprovalForAll(address indexed owner, address indexed operator, bool isApproved);
event OwnershipTransferred(address indexed oldOwner, address indexed newOwner);
uint256 private constant _TRANSFER_EVENT_SIGNATURE =
0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;
uint256 private constant _APPROVAL_EVENT_SIGNATURE =
0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925;
uint256 private constant _APPROVAL_FOR_ALL_EVENT_SIGNATURE =
0x17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31;
error SenderNotBase();
error SenderNotDeployer();
error TransferToNonERC721ReceiverImplementer();
error CannotLink();
error AlreadyLinked();
error NotLinked();
error FnSelectorNotRecognized();
struct DN404NFTStorage {
address baseERC20;
address deployer;
address owner;
}
function _getDN404NFTStorage() internal pure virtual returns (DN404NFTStorage storage $) {
assembly {
$.slot := 0x3602298b8c10b01230
}
}
constructor(address deployer) {
_getDN404NFTStorage().deployer = deployer;
}
function name() public view virtual returns (string memory result) {
return _readString(0x06fdde03, 0);
}
function symbol() public view virtual returns (string memory result) {
return _readString(0x95d89b41, 0);
}
function tokenURI(uint256 id) public view virtual returns (string memory result) {
return _readString(0xc87b56dd, id);
}
function totalSupply() public view virtual returns (uint256 result) {
return _readWord(0xe2c79281, 0, 0);
}
function balanceOf(address nftOwner) public view virtual returns (uint256 result) {
return _readWord(0xf5b100ea, uint160(nftOwner), 0);
}
function ownerOf(uint256 id) public view virtual returns (address result) {
return address(uint160(_readWord(0x6352211e, id, 0)));
}
function ownerAt(uint256 id) public view virtual returns (address result) {
return address(uint160(_readWord(0x24359879, id, 0)));
}
function approve(address spender, uint256 id) public virtual {
address base = baseERC20();
assembly {
spender := shr(96, shl(96, spender))
let m := mload(0x40)
mstore(0x00, 0xd10b6e0c)
mstore(0x20, spender)
mstore(0x40, id)
mstore(0x60, caller())
if iszero(
and(
gt(returndatasize(), 0x1f),
call(gas(), base, callvalue(), 0x1c, 0x64, 0x00, 0x20)
)
) {
returndatacopy(m, 0x00, returndatasize())
revert(m, returndatasize())
}
mstore(0x40, m)
mstore(0x60, 0)
log4(codesize(), 0x00, _APPROVAL_EVENT_SIGNATURE, shr(96, mload(0x0c)), spender, id)
}
}
function getApproved(uint256 id) public view virtual returns (address) {
return address(uint160(_readWord(0x081812fc, id, 0)));
}
function setApprovalForAll(address operator, bool approved) public virtual {
address base = baseERC20();
assembly {
operator := shr(96, shl(96, operator))
let m := mload(0x40)
mstore(0x00, 0x813500fc)
mstore(0x20, operator)
mstore(0x40, iszero(iszero(approved)))
mstore(0x60, caller())
if iszero(
and(eq(mload(0x00), 1), call(gas(), base, callvalue(), 0x1c, 0x64, 0x00, 0x20))
) {
returndatacopy(m, 0x00, returndatasize())
revert(m, returndatasize())
}
log3(0x40, 0x20, _APPROVAL_FOR_ALL_EVENT_SIGNATURE, caller(), operator)
mstore(0x40, m)
mstore(0x60, 0)
}
}
function isApprovedForAll(address nftOwner, address operator)
public
view
virtual
returns (bool result)
{
return _readWord(0xe985e9c5, uint160(nftOwner), uint160(operator)) != 0;
}
function transferFrom(address from, address to, uint256 id) public virtual {
address base = baseERC20();
assembly {
from := shr(96, shl(96, from))
to := shr(96, shl(96, to))
let m := mload(0x40)
mstore(m, 0xe5eb36c8)
mstore(add(m, 0x20), from)
mstore(add(m, 0x40), to)
mstore(add(m, 0x60), id)
mstore(add(m, 0x80), caller())
if iszero(
and(eq(mload(m), 1), call(gas(), base, callvalue(), add(m, 0x1c), 0x84, m, 0x20))
) {
returndatacopy(m, 0x00, returndatasize())
revert(m, returndatasize())
}
log4(codesize(), 0x00, _TRANSFER_EVENT_SIGNATURE, from, to, id)
}
}
function safeTransferFrom(address from, address to, uint256 id) public payable virtual {
transferFrom(from, to, id);
if (_hasCode(to)) _checkOnERC721Received(from, to, id, "");
}
function safeTransferFrom(address from, address to, uint256 id, bytes calldata data)
public
virtual
{
transferFrom(from, to, id);
if (_hasCode(to)) _checkOnERC721Received(from, to, id, data);
}
function supportsInterface(bytes4 interfaceId) public view virtual returns (bool result) {
assembly {
let s := shr(224, interfaceId)
result := or(or(eq(s, 0x01ffc9a7), eq(s, 0x80ac58cd)), eq(s, 0x5b5e139f))
}
}
function owner() public view virtual returns (address) {
return _getDN404NFTStorage().owner;
}
function pullOwner() public virtual {
address newOwner;
address base = baseERC20();
assembly {
mstore(0x00, 0x8da5cb5b)
if and(gt(returndatasize(), 0x1f), staticcall(gas(), base, 0x1c, 0x04, 0x00, 0x20)) {
newOwner := shr(96, mload(0x0c))
}
}
DN404NFTStorage storage $ = _getDN404NFTStorage();
address oldOwner = $.owner;
if (oldOwner != newOwner) {
$.owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
function baseERC20() public view virtual returns (address base) {
base = _getDN404NFTStorage().baseERC20;
if (base == address(0)) revert NotLinked();
}
modifier dn404NFTFallback() virtual {
DN404NFTStorage storage $ = _getDN404NFTStorage();
uint256 fnSelector = _calldataload(0x00) >> 224;
if (fnSelector == 0x263c69d6) {
if (msg.sender != $.baseERC20) revert SenderNotBase();
assembly {
returndatacopy(0x00, returndatasize(), lt(calldatasize(), 0x20))
let o := add(0x24, calldataload(0x04))
returndatacopy(0x00, returndatasize(), lt(calldatasize(), o))
let end := add(o, shl(5, calldataload(sub(o, 0x20))))
returndatacopy(0x00, returndatasize(), lt(calldatasize(), end))
for {} iszero(eq(o, end)) { o := add(0x20, o) } {
let d := calldataload(o)
let a := shr(96, d)
let b := and(1, d)
log4(
codesize(),
0x00,
_TRANSFER_EVENT_SIGNATURE,
mul(a, b),
mul(a, iszero(b)),
shr(168, shl(160, d))
)
}
mstore(0x00, 0x01)
return(0x00, 0x20)
}
}
if (fnSelector == 0x0f4599e5) {
if ($.deployer != address(0)) {
if (address(uint160(_calldataload(0x04))) != $.deployer) {
revert SenderNotDeployer();
}
}
if ($.baseERC20 != address(0)) revert AlreadyLinked();
$.baseERC20 = msg.sender;
assembly {
mstore(0x00, 0x01)
return(0x00, 0x20)
}
}
_;
}
fallback() external payable virtual dn404NFTFallback {
revert FnSelectorNotRecognized();
}
receive() external payable virtual {
if (msg.value != 0) revert();
}
function _readString(uint256 fnSelector, uint256 arg0)
private
view
returns (string memory result)
{
address base = baseERC20();
assembly {
result := mload(0x40)
mstore(0x00, fnSelector)
mstore(0x20, arg0)
if iszero(staticcall(gas(), base, 0x1c, 0x24, 0x00, 0x00)) {
returndatacopy(result, 0x00, returndatasize())
revert(result, returndatasize())
}
returndatacopy(0x00, 0x00, 0x20)
returndatacopy(result, mload(0x00), 0x20)
returndatacopy(add(result, 0x20), add(mload(0x00), 0x20), mload(result))
mstore(0x40, add(add(result, 0x20), mload(result)))
}
}
function _readWord(uint256 fnSelector, uint256 arg0, uint256 arg1)
private
view
returns (uint256 result)
{
address base = baseERC20();
assembly {
let m := mload(0x40)
mstore(0x00, fnSelector)
mstore(0x20, arg0)
mstore(0x40, arg1)
if iszero(
and(gt(returndatasize(), 0x1f), staticcall(gas(), base, 0x1c, 0x44, 0x00, 0x20))
) {
returndatacopy(m, 0x00, returndatasize())
revert(m, returndatasize())
}
mstore(0x40, m)
result := mload(0x00)
}
}
function _calldataload(uint256 offset) private pure returns (uint256 value) {
assembly {
value := calldataload(offset)
}
}
function _hasCode(address a) private view returns (bool result) {
assembly {
result := extcodesize(a)
}
}
function _checkOnERC721Received(address from, address to, uint256 id, bytes memory data)
private
{
assembly {
let m := mload(0x40)
let onERC721ReceivedSelector := 0x150b7a02
mstore(m, onERC721ReceivedSelector)
mstore(add(m, 0x20), caller())
mstore(add(m, 0x40), shr(96, shl(96, from)))
mstore(add(m, 0x60), id)
mstore(add(m, 0x80), 0x80)
let n := mload(data)
mstore(add(m, 0xa0), n)
if n { pop(staticcall(gas(), 4, add(data, 0x20), n, add(m, 0xc0), n)) }
if iszero(call(gas(), to, 0, add(m, 0x1c), add(n, 0xa4), m, 0x20)) {
if returndatasize() {
returndatacopy(m, 0x00, returndatasize())
revert(m, returndatasize())
}
}
if iszero(eq(mload(m), shl(224, onERC721ReceivedSelector))) {
mstore(0x00, 0xd1a57ed6)
revert(0x1c, 0x04)
}
}
}
}文件 3 的 6：LibString.sol
pragma solidity ^0.8.4;
library LibString {
error HexLengthInsufficient();
error TooBigForSmallString();
uint256 internal constant NOT_FOUND = type(uint256).max;
function toString(uint256 value) internal pure returns (string memory str) {
assembly {
str := add(mload(0x40), 0x80)
mstore(0x40, add(str, 0x20))
mstore(str, 0)
let end := str
let w := not(0)
for { let temp := value } 1 {} {
str := add(str, w)
mstore8(str, add(48, mod(temp, 10)))
temp := div(temp, 10)
if iszero(temp) { break }
}
let length := sub(end, str)
str := sub(str, 0x20)
mstore(str, length)
}
}
function toString(int256 value) internal pure returns (string memory str) {
if (value >= 0) {
return toString(uint256(value));
}
unchecked {
str = toString(~uint256(value) + 1);
}
assembly {
let length := mload(str)
mstore(str, 0x2d)
str := sub(str, 1)
mstore(str, add(length, 1))
}
}
function toHexString(uint256 value, uint256 length) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value, length);
assembly {
let strLength := add(mload(str), 2)
mstore(str, 0x3078)
str := sub(str, 2)
mstore(str, strLength)
}
}
function toHexStringNoPrefix(uint256 value, uint256 length)
internal
pure
returns (string memory str)
{
assembly {
str := add(mload(0x40), and(add(shl(1, length), 0x42), not(0x1f)))
mstore(0x40, add(str, 0x20))
mstore(str, 0)
let end := str
mstore(0x0f, 0x30313233343536373839616263646566)
let start := sub(str, add(length, length))
let w := not(1)
let temp := value
for {} 1 {} {
str := add(str, w)
mstore8(add(str, 1), mload(and(temp, 15)))
mstore8(str, mload(and(shr(4, temp), 15)))
temp := shr(8, temp)
if iszero(xor(str, start)) { break }
}
if temp {
mstore(0x00, 0x2194895a)
revert(0x1c, 0x04)
}
let strLength := sub(end, str)
str := sub(str, 0x20)
mstore(str, strLength)
}
}
function toHexString(uint256 value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
assembly {
let strLength := add(mload(str), 2)
mstore(str, 0x3078)
str := sub(str, 2)
mstore(str, strLength)
}
}
function toMinimalHexString(uint256 value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
assembly {
let o := eq(byte(0, mload(add(str, 0x20))), 0x30)
let strLength := add(mload(str), 2)
mstore(add(str, o), 0x3078)
str := sub(add(str, o), 2)
mstore(str, sub(strLength, o))
}
}
function toMinimalHexStringNoPrefix(uint256 value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
assembly {
let o := eq(byte(0, mload(add(str, 0x20))), 0x30)
let strLength := mload(str)
str := add(str, o)
mstore(str, sub(strLength, o))
}
}
function toHexStringNoPrefix(uint256 value) internal pure returns (string memory str) {
assembly {
str := add(mload(0x40), 0x80)
mstore(0x40, add(str, 0x20))
mstore(str, 0)
let end := str
mstore(0x0f, 0x30313233343536373839616263646566)
let w := not(1)
for { let temp := value } 1 {} {
str := add(str, w)
mstore8(add(str, 1), mload(and(temp, 15)))
mstore8(str, mload(and(shr(4, temp), 15)))
temp := shr(8, temp)
if iszero(temp) { break }
}
let strLength := sub(end, str)
str := sub(str, 0x20)
mstore(str, strLength)
}
}
function toHexStringChecksummed(address value) internal pure returns (string memory str) {
str = toHexString(value);
assembly {
let mask := shl(6, div(not(0), 255))
let o := add(str, 0x22)
let hashed := and(keccak256(o, 40), mul(34, mask))
let t := shl(240, 136)
for { let i := 0 } 1 {} {
mstore(add(i, i), mul(t, byte(i, hashed)))
i := add(i, 1)
if eq(i, 20) { break }
}
mstore(o, xor(mload(o), shr(1, and(mload(0x00), and(mload(o), mask)))))
o := add(o, 0x20)
mstore(o, xor(mload(o), shr(1, and(mload(0x20), and(mload(o), mask)))))
}
}
function toHexString(address value) internal pure returns (string memory str) {
str = toHexStringNoPrefix(value);
assembly {
let strLength := add(mload(str), 2)
mstore(str, 0x3078)
str := sub(str, 2)
mstore(str, strLength)
}
}
function toHexStringNoPrefix(address value) internal pure returns (string memory str) {
assembly {
str := mload(0x40)
mstore(0x40, add(str, 0x80))
mstore(0x0f, 0x30313233343536373839616263646566)
str := add(str, 2)
mstore(str, 40)
let o := add(str, 0x20)
mstore(add(o, 40), 0)
value := shl(96, value)
for { let i := 0 } 1 {} {
let p := add(o, add(i, i))
let temp := byte(i, value)
mstore8(add(p, 1), mload(and(temp, 15)))
mstore8(p, mload(shr(4, temp)))
i := add(i, 1)
if eq(i, 20) { break }
}
}
}
function toHexString(bytes memory raw) internal pure returns (string memory str) {
str = toHexStringNoPrefix(raw);
assembly {
let strLength := add(mload(str), 2)
mstore(str, 0x3078)
str := sub(str, 2)
mstore(str, strLength)
}
}
function toHexStringNoPrefix(bytes memory raw) internal pure returns (string memory str) {
assembly {
let length := mload(raw)
str := add(mload(0x40), 2)
mstore(str, add(length, length))
mstore(0x0f, 0x30313233343536373839616263646566)
let o := add(str, 0x20)
let end := add(raw, length)
for {} iszero(eq(raw, end)) {} {
raw := add(raw, 1)
mstore8(add(o, 1), mload(and(mload(raw), 15)))
mstore8(o, mload(and(shr(4, mload(raw)), 15)))
o := add(o, 2)
}
mstore(o, 0)
mstore(0x40, add(o, 0x20))
}
}
function runeCount(string memory s) internal pure returns (uint256 result) {
assembly {
if mload(s) {
mstore(0x00, div(not(0), 255))
mstore(0x20, 0x0202020202020202020202020202020202020202020202020303030304040506)
let o := add(s, 0x20)
let end := add(o, mload(s))
for { result := 1 } 1 { result := add(result, 1) } {
o := add(o, byte(0, mload(shr(250, mload(o)))))
if iszero(lt(o, end)) { break }
}
}
}
}
function is7BitASCII(string memory s) internal pure returns (bool result) {
assembly {
let mask := shl(7, div(not(0), 255))
result := 1
let n := mload(s)
if n {
let o := add(s, 0x20)
let end := add(o, n)
let last := mload(end)
mstore(end, 0)
for {} 1 {} {
if and(mask, mload(o)) {
result := 0
break
}
o := add(o, 0x20)
if iszero(lt(o, end)) { break }
}
mstore(end, last)
}
}
}
function replace(string memory subject, string memory search, string memory replacement)
internal
pure
returns (string memory result)
{
assembly {
let subjectLength := mload(subject)
let searchLength := mload(search)
let replacementLength := mload(replacement)
subject := add(subject, 0x20)
search := add(search, 0x20)
replacement := add(replacement, 0x20)
result := add(mload(0x40), 0x20)
let subjectEnd := add(subject, subjectLength)
if iszero(gt(searchLength, subjectLength)) {
let subjectSearchEnd := add(sub(subjectEnd, searchLength), 1)
let h := 0
if iszero(lt(searchLength, 0x20)) { h := keccak256(search, searchLength) }
let m := shl(3, sub(0x20, and(searchLength, 0x1f)))
let s := mload(search)
for {} 1 {} {
let t := mload(subject)
if iszero(shr(m, xor(t, s))) {
if h {
if iszero(eq(keccak256(subject, searchLength), h)) {
mstore(result, t)
result := add(result, 1)
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
for { let o := 0 } 1 {} {
mstore(add(result, o), mload(add(replacement, o)))
o := add(o, 0x20)
if iszero(lt(o, replacementLength)) { break }
}
result := add(result, replacementLength)
subject := add(subject, searchLength)
if searchLength {
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
mstore(result, t)
result := add(result, 1)
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
}
}
let resultRemainder := result
result := add(mload(0x40), 0x20)
let k := add(sub(resultRemainder, result), sub(subjectEnd, subject))
for {} lt(subject, subjectEnd) {} {
mstore(resultRemainder, mload(subject))
resultRemainder := add(resultRemainder, 0x20)
subject := add(subject, 0x20)
}
result := sub(result, 0x20)
let last := add(add(result, 0x20), k)
mstore(last, 0)
mstore(0x40, add(last, 0x20))
mstore(result, k)
}
}
function indexOf(string memory subject, string memory search, uint256 from)
internal
pure
returns (uint256 result)
{
assembly {
for { let subjectLength := mload(subject) } 1 {} {
if iszero(mload(search)) {
if iszero(gt(from, subjectLength)) {
result := from
break
}
result := subjectLength
break
}
let searchLength := mload(search)
let subjectStart := add(subject, 0x20)
result := not(0)
subject := add(subjectStart, from)
let end := add(sub(add(subjectStart, subjectLength), searchLength), 1)
let m := shl(3, sub(0x20, and(searchLength, 0x1f)))
let s := mload(add(search, 0x20))
if iszero(and(lt(subject, end), lt(from, subjectLength))) { break }
if iszero(lt(searchLength, 0x20)) {
for { let h := keccak256(add(search, 0x20), searchLength) } 1 {} {
if iszero(shr(m, xor(mload(subject), s))) {
if eq(keccak256(subject, searchLength), h) {
result := sub(subject, subjectStart)
break
}
}
subject := add(subject, 1)
if iszero(lt(subject, end)) { break }
}
break
}
for {} 1 {} {
if iszero(shr(m, xor(mload(subject), s))) {
result := sub(subject, subjectStart)
break
}
subject := add(subject, 1)
if iszero(lt(subject, end)) { break }
}
break
}
}
}
function indexOf(string memory subject, string memory search)
internal
pure
returns (uint256 result)
{
result = indexOf(subject, search, 0);
}
function lastIndexOf(string memory subject, string memory search, uint256 from)
internal
pure
returns (uint256 result)
{
assembly {
for {} 1 {} {
result := not(0)
let searchLength := mload(search)
if gt(searchLength, mload(subject)) { break }
let w := result
let fromMax := sub(mload(subject), searchLength)
if iszero(gt(fromMax, from)) { from := fromMax }
let end := add(add(subject, 0x20), w)
subject := add(add(subject, 0x20), from)
if iszero(gt(subject, end)) { break }
for { let h := keccak256(add(search, 0x20), searchLength) } 1 {} {
if eq(keccak256(subject, searchLength), h) {
result := sub(subject, add(end, 1))
break
}
subject := add(subject, w)
if iszero(gt(subject, end)) { break }
}
break
}
}
}
function lastIndexOf(string memory subject, string memory search)
internal
pure
returns (uint256 result)
{
result = lastIndexOf(subject, search, uint256(int256(-1)));
}
function contains(string memory subject, string memory search) internal pure returns (bool) {
return indexOf(subject, search) != NOT_FOUND;
}
function startsWith(string memory subject, string memory search)
internal
pure
returns (bool result)
{
assembly {
let searchLength := mload(search)
result := and(
iszero(gt(searchLength, mload(subject))),
eq(
keccak256(add(subject, 0x20), searchLength),
keccak256(add(search, 0x20), searchLength)
)
)
}
}
function endsWith(string memory subject, string memory search)
internal
pure
returns (bool result)
{
assembly {
let searchLength := mload(search)
let subjectLength := mload(subject)
let withinRange := iszero(gt(searchLength, subjectLength))
result := and(
withinRange,
eq(
keccak256(
add(add(subject, 0x20), mul(withinRange, sub(subjectLength, searchLength))),
searchLength
),
keccak256(add(search, 0x20), searchLength)
)
)
}
}
function repeat(string memory subject, uint256 times)
internal
pure
returns (string memory result)
{
assembly {
let subjectLength := mload(subject)
if iszero(or(iszero(times), iszero(subjectLength))) {
subject := add(subject, 0x20)
result := mload(0x40)
let output := add(result, 0x20)
for {} 1 {} {
for { let o := 0 } 1 {} {
mstore(add(output, o), mload(add(subject, o)))
o := add(o, 0x20)
if iszero(lt(o, subjectLength)) { break }
}
output := add(output, subjectLength)
times := sub(times, 1)
if iszero(times) { break }
}
mstore(output, 0)
let resultLength := sub(output, add(result, 0x20))
mstore(result, resultLength)
mstore(0x40, add(result, add(resultLength, 0x20)))
}
}
}
function slice(string memory subject, uint256 start, uint256 end)
internal
pure
returns (string memory result)
{
assembly {
let subjectLength := mload(subject)
if iszero(gt(subjectLength, end)) { end := subjectLength }
if iszero(gt(subjectLength, start)) { start := subjectLength }
if lt(start, end) {
result := mload(0x40)
let resultLength := sub(end, start)
mstore(result, resultLength)
subject := add(subject, start)
let w := not(0x1f)
for { let o := and(add(resultLength, 0x1f), w) } 1 {} {
mstore(add(result, o), mload(add(subject, o)))
o := add(o, w)
if iszero(o) { break }
}
mstore(add(add(result, 0x20), resultLength), 0)
mstore(0x40, add(result, and(add(resultLength, 0x3f), w)))
}
}
}
function slice(string memory subject, uint256 start)
internal
pure
returns (string memory result)
{
result = slice(subject, start, uint256(int256(-1)));
}
function indicesOf(string memory subject, string memory search)
internal
pure
returns (uint256[] memory result)
{
assembly {
let subjectLength := mload(subject)
let searchLength := mload(search)
if iszero(gt(searchLength, subjectLength)) {
subject := add(subject, 0x20)
search := add(search, 0x20)
result := add(mload(0x40), 0x20)
let subjectStart := subject
let subjectSearchEnd := add(sub(add(subject, subjectLength), searchLength), 1)
let h := 0
if iszero(lt(searchLength, 0x20)) { h := keccak256(search, searchLength) }
let m := shl(3, sub(0x20, and(searchLength, 0x1f)))
let s := mload(search)
for {} 1 {} {
let t := mload(subject)
if iszero(shr(m, xor(t, s))) {
if h {
if iszero(eq(keccak256(subject, searchLength), h)) {
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
mstore(result, sub(subject, subjectStart))
result := add(result, 0x20)
subject := add(subject, searchLength)
if searchLength {
if iszero(lt(subject, subjectSearchEnd)) { break }
continue
}
}
subject := add(subject, 1)
if iszero(lt(subject, subjectSearchEnd)) { break }
}
let resultEnd := result
result := mload(0x40)
mstore(result, shr(5, sub(resultEnd, add(result, 0x20))))
mstore(0x40, add(resultEnd, 0x20))
}
}
}
function split(string memory subject, string memory delimiter)
internal
pure
returns (string[] memory result)
{
uint256[] memory indices = indicesOf(subject, delimiter);
assembly {
let w := not(0x1f)
let indexPtr := add(indices, 0x20)
let indicesEnd := add(indexPtr, shl(5, add(mload(indices), 1)))
mstore(add(indicesEnd, w), mload(subject))
mstore(indices, add(mload(indices), 1))
let prevIndex := 0
for {} 1 {} {
let index := mload(indexPtr)
mstore(indexPtr, 0x60)
if iszero(eq(index, prevIndex)) {
let element := mload(0x40)
let elementLength := sub(index, prevIndex)
mstore(element, elementLength)
for { let o := and(add(elementLength, 0x1f), w) } 1 {} {
mstore(add(element, o), mload(add(add(subject, prevIndex), o)))
o := add(o, w)
if iszero(o) { break }
}
mstore(add(add(element, 0x20), elementLength), 0)
mstore(0x40, add(element, and(add(elementLength, 0x3f), w)))
mstore(indexPtr, element)
}
prevIndex := add(index, mload(delimiter))
indexPtr := add(indexPtr, 0x20)
if iszero(lt(indexPtr, indicesEnd)) { break }
}
result := indices
if iszero(mload(delimiter)) {
result := add(indices, 0x20)
mstore(result, sub(mload(indices), 2))
}
}
}
function concat(string memory a, string memory b)
internal
pure
returns (string memory result)
{
assembly {
let w := not(0x1f)
result := mload(0x40)
let aLength := mload(a)
for { let o := and(add(aLength, 0x20), w) } 1 {} {
mstore(add(result, o), mload(add(a, o)))
o := add(o, w)
if iszero(o) { break }
}
let bLength := mload(b)
let output := add(result, aLength)
for { let o := and(add(bLength, 0x20), w) } 1 {} {
mstore(add(output, o), mload(add(b, o)))
o := add(o, w)
if iszero(o) { break }
}
let totalLength := add(aLength, bLength)
let last := add(add(result, 0x20), totalLength)
mstore(last, 0)
mstore(result, totalLength)
mstore(0x40, and(add(last, 0x1f), w))
}
}
function toCase(string memory subject, bool toUpper)
internal
pure
returns (string memory result)
{
assembly {
let length := mload(subject)
if length {
result := add(mload(0x40), 0x20)
subject := add(subject, 1)
let flags := shl(add(70, shl(5, toUpper)), 0x3ffffff)
let w := not(0)
for { let o := length } 1 {} {
o := add(o, w)
let b := and(0xff, mload(add(subject, o)))
mstore8(add(result, o), xor(b, and(shr(b, flags), 0x20)))
if iszero(o) { break }
}
result := mload(0x40)
mstore(result, length)
let last := add(add(result, 0x20), length)
mstore(last, 0)
mstore(0x40, add(last, 0x20))
}
}
}
function fromSmallString(bytes32 s) internal pure returns (string memory result) {
assembly {
result := mload(0x40)
let n := 0
for {} byte(n, s) { n := add(n, 1) } {}
mstore(result, n)
let o := add(result, 0x20)
mstore(o, s)
mstore(add(o, n), 0)
mstore(0x40, add(result, 0x40))
}
}
function normalizeSmallString(bytes32 s) internal pure returns (bytes32 result) {
assembly {
for {} byte(result, s) { result := add(result, 1) } {}
mstore(0x00, s)
mstore(result, 0x00)
result := mload(0x00)
}
}
function toSmallString(string memory s) internal pure returns (bytes32 result) {
assembly {
result := mload(s)
if iszero(lt(result, 33)) {
mstore(0x00, 0xec92f9a3)
revert(0x1c, 0x04)
}
result := shl(shl(3, sub(32, result)), mload(add(s, result)))
}
}
function lower(string memory subject) internal pure returns (string memory result) {
result = toCase(subject, false);
}
function upper(string memory subject) internal pure returns (string memory result) {
result = toCase(subject, true);
}
function escapeHTML(string memory s) internal pure returns (string memory result) {
assembly {
let end := add(s, mload(s))
result := add(mload(0x40), 0x20)
mstore(0x1f, 0x900094)
mstore(0x08, 0xc0000000a6ab)
mstore(0x00, shl(64, 0x2671756f743b26616d703b262333393b266c743b2667743b))
for {} iszero(eq(s, end)) {} {
s := add(s, 1)
let c := and(mload(s), 0xff)
if iszero(and(shl(c, 1), 0x500000c400000000)) {
mstore8(result, c)
result := add(result, 1)
continue
}
let t := shr(248, mload(c))
mstore(result, mload(and(t, 0x1f)))
result := add(result, shr(5, t))
}
let last := result
mstore(last, 0)
result := mload(0x40)
mstore(result, sub(last, add(result, 0x20)))
mstore(0x40, add(last, 0x20))
}
}
function escapeJSON(string memory s, bool addDoubleQuotes)
internal
pure
returns (string memory result)
{
assembly {
let end := add(s, mload(s))
result := add(mload(0x40), 0x20)
if addDoubleQuotes {
mstore8(result, 34)
result := add(1, result)
}
mstore(0x15, 0x5c75303030303031323334353637383961626364656662746e006672)
let e := or(shl(0x22, 1), shl(0x5c, 1))
for {} iszero(eq(s, end)) {} {
s := add(s, 1)
let c := and(mload(s), 0xff)
if iszero(lt(c, 0x20)) {
if iszero(and(shl(c, 1), e)) {
mstore8(result, c)
result := add(result, 1)
continue
}
mstore8(result, 0x5c)
mstore8(add(result, 1), c)
result := add(result, 2)
continue
}
if iszero(and(shl(c, 1), 0x3700)) {
mstore8(0x1d, mload(shr(4, c)))
mstore8(0x1e, mload(and(c, 15)))
mstore(result, mload(0x19))
result := add(result, 6)
continue
}
mstore8(result, 0x5c)
mstore8(add(result, 1), mload(add(c, 8)))
result := add(result, 2)
}
if addDoubleQuotes {
mstore8(result, 34)
result := add(1, result)
}
let last := result
mstore(last, 0)
result := mload(0x40)
mstore(result, sub(last, add(result, 0x20)))
mstore(0x40, add(last, 0x20))
}
}
function escapeJSON(string memory s) internal pure returns (string memory result) {
result = escapeJSON(s, false);
}
function eq(string memory a, string memory b) internal pure returns (bool result) {
assembly {
result := eq(keccak256(add(a, 0x20), mload(a)), keccak256(add(b, 0x20), mload(b)))
}
}
function eqs(string memory a, bytes32 b) internal pure returns (bool result) {
assembly {
let m := not(shl(7, div(not(iszero(b)), 255)))
let x := not(or(m, or(b, add(m, and(b, m)))))
let r := shl(7, iszero(iszero(shr(128, x))))
r := or(r, shl(6, iszero(iszero(shr(64, shr(r, x))))))
r := or(r, shl(5, lt(0xffffffff, shr(r, x))))
r := or(r, shl(4, lt(0xffff, shr(r, x))))
r := or(r, shl(3, lt(0xff, shr(r, x))))
result := gt(eq(mload(a), add(iszero(x), xor(31, shr(3, r)))),
xor(shr(add(8, r), b), shr(add(8, r), mload(add(a, 0x20)))))
}
}
function packOne(string memory a) internal pure returns (bytes32 result) {
assembly {
result :=
mul(
mload(add(a, 0x1f)),
lt(sub(mload(a), 1), 0x1f)
)
}
}
function unpackOne(bytes32 packed) internal pure returns (string memory result) {
assembly {
result := mload(0x40)
mstore(0x40, add(result, 0x40))
mstore(result, 0)
mstore(add(result, 0x1f), packed)
mstore(add(add(result, 0x20), mload(result)), 0)
}
}
function packTwo(string memory a, string memory b) internal pure returns (bytes32 result) {
assembly {
let aLength := mload(a)
result :=
mul(
or(
shl(shl(3, sub(0x1f, aLength)), mload(add(a, aLength))),
mload(sub(add(b, 0x1e), aLength))
),
lt(sub(add(aLength, mload(b)), 1), 0x1e)
)
}
}
function unpackTwo(bytes32 packed)
internal
pure
returns (string memory resultA, string memory resultB)
{
assembly {
resultA := mload(0x40)
resultB := add(resultA, 0x40)
mstore(0x40, add(resultB, 0x40))
mstore(resultA, 0)
mstore(resultB, 0)
mstore(add(resultA, 0x1f), packed)
mstore(add(resultB, 0x1f), mload(add(add(resultA, 0x20), mload(resultA))))
mstore(add(add(resultA, 0x20), mload(resultA)), 0)
mstore(add(add(resultB, 0x20), mload(resultB)), 0)
}
}
function directReturn(string memory a) internal pure {
assembly {
let retStart := sub(a, 0x20)
let retSize := add(mload(a), 0x40)
mstore(add(retStart, retSize), 0)
mstore(retStart, 0x20)
return(retStart, retSize)
}
}
}文件 4 的 6：Ownable.sol
pragma solidity ^0.8.4;
abstract contract Ownable {
error Unauthorized();
error NewOwnerIsZeroAddress();
error NoHandoverRequest();
error AlreadyInitialized();
event OwnershipTransferred(address indexed oldOwner, address indexed newOwner);
event OwnershipHandoverRequested(address indexed pendingOwner);
event OwnershipHandoverCanceled(address indexed pendingOwner);
uint256 private constant _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE =
0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0;
uint256 private constant _OWNERSHIP_HANDOVER_REQUESTED_EVENT_SIGNATURE =
0xdbf36a107da19e49527a7176a1babf963b4b0ff8cde35ee35d6cd8f1f9ac7e1d;
uint256 private constant _OWNERSHIP_HANDOVER_CANCELED_EVENT_SIGNATURE =
0xfa7b8eab7da67f412cc9575ed43464468f9bfbae89d1675917346ca6d8fe3c92;
bytes32 internal constant _OWNER_SLOT =
0xffffffffffffffffffffffffffffffffffffffffffffffffffffffff74873927;
uint256 private constant _HANDOVER_SLOT_SEED = 0x389a75e1;
function _guardInitializeOwner() internal pure virtual returns (bool guard) {}
function _initializeOwner(address newOwner) internal virtual {
if (_guardInitializeOwner()) {
assembly {
let ownerSlot := _OWNER_SLOT
if sload(ownerSlot) {
mstore(0x00, 0x0dc149f0)
revert(0x1c, 0x04)
}
newOwner := shr(96, shl(96, newOwner))
sstore(ownerSlot, or(newOwner, shl(255, iszero(newOwner))))
log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, 0, newOwner)
}
} else {
assembly {
newOwner := shr(96, shl(96, newOwner))
sstore(_OWNER_SLOT, newOwner)
log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, 0, newOwner)
}
}
}
function _setOwner(address newOwner) internal virtual {
if (_guardInitializeOwner()) {
assembly {
let ownerSlot := _OWNER_SLOT
newOwner := shr(96, shl(96, newOwner))
log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, sload(ownerSlot), newOwner)
sstore(ownerSlot, or(newOwner, shl(255, iszero(newOwner))))
}
} else {
assembly {
let ownerSlot := _OWNER_SLOT
newOwner := shr(96, shl(96, newOwner))
log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, sload(ownerSlot), newOwner)
sstore(ownerSlot, newOwner)
}
}
}
function _checkOwner() internal view virtual {
assembly {
if iszero(eq(caller(), sload(_OWNER_SLOT))) {
mstore(0x00, 0x82b42900)
revert(0x1c, 0x04)
}
}
}
function _ownershipHandoverValidFor() internal view virtual returns (uint64) {
return 48 * 3600;
}
function transferOwnership(address newOwner) public payable virtual onlyOwner {
assembly {
if iszero(shl(96, newOwner)) {
mstore(0x00, 0x7448fbae)
revert(0x1c, 0x04)
}
}
_setOwner(newOwner);
}
function renounceOwnership() public payable virtual onlyOwner {
_setOwner(address(0));
}
function requestOwnershipHandover() public payable virtual {
unchecked {
uint256 expires = block.timestamp + _ownershipHandoverValidFor();
assembly {
mstore(0x0c, _HANDOVER_SLOT_SEED)
mstore(0x00, caller())
sstore(keccak256(0x0c, 0x20), expires)
log2(0, 0, _OWNERSHIP_HANDOVER_REQUESTED_EVENT_SIGNATURE, caller())
}
}
}
function cancelOwnershipHandover() public payable virtual {
assembly {
mstore(0x0c, _HANDOVER_SLOT_SEED)
mstore(0x00, caller())
sstore(keccak256(0x0c, 0x20), 0)
log2(0, 0, _OWNERSHIP_HANDOVER_CANCELED_EVENT_SIGNATURE, caller())
}
}
function completeOwnershipHandover(address pendingOwner) public payable virtual onlyOwner {
assembly {
mstore(0x0c, _HANDOVER_SLOT_SEED)
mstore(0x00, pendingOwner)
let handoverSlot := keccak256(0x0c, 0x20)
if gt(timestamp(), sload(handoverSlot)) {
mstore(0x00, 0x6f5e8818)
revert(0x1c, 0x04)
}
sstore(handoverSlot, 0)
}
_setOwner(pendingOwner);
}
function owner() public view virtual returns (address result) {
assembly {
result := sload(_OWNER_SLOT)
}
}
function ownershipHandoverExpiresAt(address pendingOwner)
public
view
virtual
returns (uint256 result)
{
assembly {
mstore(0x0c, _HANDOVER_SLOT_SEED)
mstore(0x00, pendingOwner)
result := sload(keccak256(0x0c, 0x20))
}
}
modifier onlyOwner() virtual {
_checkOwner();
_;
}
}文件 5 的 6：PENGU.sol
pragma solidity ^0.8.4;
import "./DN404.sol";
import "./DN404Mirror.sol";
import {Ownable} from "./solady/auth/Ownable.sol";
import {LibString} from "./solady/utils/LibString.sol";
import {SafeTransferLib} from "./solady/utils/SafeTransferLib.sol";
contract PenguDN404 is DN404, Ownable {
string private _name;
string private _symbol;
string private _baseURI;
constructor(
string memory name_,
string memory symbol_,
uint96 initialTokenSupply,
address initialSupplyOwner
) {
_initializeOwner(msg.sender);
_name = name_;
_symbol = symbol_;
address mirror = address(new DN404Mirror(msg.sender));
_initializeDN404(initialTokenSupply, initialSupplyOwner, mirror);
}
function name() public view override returns (string memory) {
return _name;
}
function symbol() public view override returns (string memory) {
return _symbol;
}
function tokenURI(uint256 tokenId) public view override returns (string memory result) {
if (bytes(_baseURI).length != 0) {
return string.concat(_baseURI, LibString.toString(tokenId));
}
uint8 seed = uint8(bytes1(keccak256(abi.encodePacked(tokenId))));
string memory image;
string memory color;
string memory dataURI = "https://raw.githubusercontent.com/iampengu404/metadata/main/images/";
if (seed <= 100) {
image = "wrapped_black.png";
color = "green";
} else if (seed <= 160) {
image = "wrapped_dark_green.png";
color = "dark green";
} else if (seed <= 190) {
image = "wrapped_dark_teal.png";
color = "dark teal";
} else if (seed <= 210) {
image = "wrapped_light_blue.png";
color = "light blue";
} else if (seed <= 220) {
image = "wrapped_light_green.png";
color = "light green";
} else if (seed <= 230) {
image = "wrapped_midnight.png";
color = "midnight";
} else if (seed <= 255) {
image = "wrapped_teal.png";
color = "teal";
}
string memory jsonPreImage = string.concat(
string.concat(
string.concat('{"name": "Pengu Foods #', LibString.toString(tokenId)),
'","description":"Enter Pengu Foods: a collection of 10,000 DN404-enabled NFTs that can be cooked/burned into fractionalized tokens to nourish every penguin in the Pengu ecosystem.","external_url":"https://www.pengufoods.xyz/","image":"'
),
string.concat(dataURI, image)
);
string memory jsonPostImage = string.concat(
'","attributes":[{"trait_type":"color","value":"',
color
);
string memory jsonPostTraits = '"}]}';
return
string.concat(
"data:application/json;utf8,",
string.concat(
string.concat(jsonPreImage, jsonPostImage),
jsonPostTraits
)
);
}
function setBaseURI(string calldata baseURI_) public onlyOwner {
_baseURI = baseURI_;
}
function withdraw() public onlyOwner {
SafeTransferLib.safeTransferAllETH(msg.sender);
}
}文件 6 的 6：SafeTransferLib.sol
pragma solidity ^0.8.4;
library SafeTransferLib {
error ETHTransferFailed();
error TransferFromFailed();
error TransferFailed();
error ApproveFailed();
uint256 internal constant GAS_STIPEND_NO_STORAGE_WRITES = 2300;
uint256 internal constant GAS_STIPEND_NO_GRIEF = 100000;
function safeTransferETH(address to, uint256 amount) internal {
assembly {
if iszero(call(gas(), to, amount, codesize(), 0x00, codesize(), 0x00)) {
mstore(0x00, 0xb12d13eb)
revert(0x1c, 0x04)
}
}
}
function safeTransferAllETH(address to) internal {
assembly {
if iszero(call(gas(), to, selfbalance(), codesize(), 0x00, codesize(), 0x00)) {
mstore(0x00, 0xb12d13eb)
revert(0x1c, 0x04)
}
}
}
function forceSafeTransferETH(address to, uint256 amount, uint256 gasStipend) internal {
assembly {
if lt(selfbalance(), amount) {
mstore(0x00, 0xb12d13eb)
revert(0x1c, 0x04)
}
if iszero(call(gasStipend, to, amount, codesize(), 0x00, codesize(), 0x00)) {
mstore(0x00, to)
mstore8(0x0b, 0x73)
mstore8(0x20, 0xff)
if iszero(create(amount, 0x0b, 0x16)) { revert(codesize(), codesize()) }
}
}
}
function forceSafeTransferAllETH(address to, uint256 gasStipend) internal {
assembly {
if iszero(call(gasStipend, to, selfbalance(), codesize(), 0x00, codesize(), 0x00)) {
mstore(0x00, to)
mstore8(0x0b, 0x73)
mstore8(0x20, 0xff)
if iszero(create(selfbalance(), 0x0b, 0x16)) { revert(codesize(), codesize()) }
}
}
}
function forceSafeTransferETH(address to, uint256 amount) internal {
assembly {
if lt(selfbalance(), amount) {
mstore(0x00, 0xb12d13eb)
revert(0x1c, 0x04)
}
if iszero(call(GAS_STIPEND_NO_GRIEF, to, amount, codesize(), 0x00, codesize(), 0x00)) {
mstore(0x00, to)
mstore8(0x0b, 0x73)
mstore8(0x20, 0xff)
if iszero(create(amount, 0x0b, 0x16)) { revert(codesize(), codesize()) }
}
}
}
function forceSafeTransferAllETH(address to) internal {
assembly {
if iszero(call(GAS_STIPEND_NO_GRIEF, to, selfbalance(), codesize(), 0x00, codesize(), 0x00)) {
mstore(0x00, to)
mstore8(0x0b, 0x73)
mstore8(0x20, 0xff)
if iszero(create(selfbalance(), 0x0b, 0x16)) { revert(codesize(), codesize()) }
}
}
}
function trySafeTransferETH(address to, uint256 amount, uint256 gasStipend)
internal
returns (bool success)
{
assembly {
success := call(gasStipend, to, amount, codesize(), 0x00, codesize(), 0x00)
}
}
function trySafeTransferAllETH(address to, uint256 gasStipend)
internal
returns (bool success)
{
assembly {
success := call(gasStipend, to, selfbalance(), codesize(), 0x00, codesize(), 0x00)
}
}
function safeTransferFrom(address token, address from, address to, uint256 amount) internal {
assembly {
let m := mload(0x40)
mstore(0x60, amount)
mstore(0x40, to)
mstore(0x2c, shl(96, from))
mstore(0x0c, 0x23b872dd000000000000000000000000)
if iszero(
and(
or(eq(mload(0x00), 1), iszero(returndatasize())),
call(gas(), token, 0, 0x1c, 0x64, 0x00, 0x20)
)
) {
mstore(0x00, 0x7939f424)
revert(0x1c, 0x04)
}
mstore(0x60, 0)
mstore(0x40, m)
}
}
function safeTransferAllFrom(address token, address from, address to)
internal
returns (uint256 amount)
{
assembly {
let m := mload(0x40)
mstore(0x40, to)
mstore(0x2c, shl(96, from))
mstore(0x0c, 0x70a08231000000000000000000000000)
if iszero(
and(
gt(returndatasize(), 0x1f),
staticcall(gas(), token, 0x1c, 0x24, 0x60, 0x20)
)
) {
mstore(0x00, 0x7939f424)
revert(0x1c, 0x04)
}
mstore(0x00, 0x23b872dd)
amount := mload(0x60)
if iszero(
and(
or(eq(mload(0x00), 1), iszero(returndatasize())),
call(gas(), token, 0, 0x1c, 0x64, 0x00, 0x20)
)
) {
mstore(0x00, 0x7939f424)
revert(0x1c, 0x04)
}
mstore(0x60, 0)
mstore(0x40, m)
}
}
function safeTransfer(address token, address to, uint256 amount) internal {
assembly {
mstore(0x14, to)
mstore(0x34, amount)
mstore(0x00, 0xa9059cbb000000000000000000000000)
if iszero(
and(
or(eq(mload(0x00), 1), iszero(returndatasize())),
call(gas(), token, 0, 0x10, 0x44, 0x00, 0x20)
)
) {
mstore(0x00, 0x90b8ec18)
revert(0x1c, 0x04)
}
mstore(0x34, 0)
}
}
function safeTransferAll(address token, address to) internal returns (uint256 amount) {
assembly {
mstore(0x00, 0x70a08231)
mstore(0x20, address())
if iszero(
and(
gt(returndatasize(), 0x1f),
staticcall(gas(), token, 0x1c, 0x24, 0x34, 0x20)
)
) {
mstore(0x00, 0x90b8ec18)
revert(0x1c, 0x04)
}
mstore(0x14, to)
amount := mload(0x34)
mstore(0x00, 0xa9059cbb000000000000000000000000)
if iszero(
and(
or(eq(mload(0x00), 1), iszero(returndatasize())),
call(gas(), token, 0, 0x10, 0x44, 0x00, 0x20)
)
) {
mstore(0x00, 0x90b8ec18)
revert(0x1c, 0x04)
}
mstore(0x34, 0)
}
}
function safeApprove(address token, address to, uint256 amount) internal {
assembly {
mstore(0x14, to)
mstore(0x34, amount)
mstore(0x00, 0x095ea7b3000000000000000000000000)
if iszero(
and(
or(eq(mload(0x00), 1), iszero(returndatasize())),
call(gas(), token, 0, 0x10, 0x44, 0x00, 0x20)
)
) {
mstore(0x00, 0x3e3f8f73)
revert(0x1c, 0x04)
}
mstore(0x34, 0)
}
}
function safeApproveWithRetry(address token, address to, uint256 amount) internal {
assembly {
mstore(0x14, to)
mstore(0x34, amount)
mstore(0x00, 0x095ea7b3000000000000000000000000)
if iszero(
and(
or(eq(mload(0x00), 1), iszero(returndatasize())),
call(gas(), token, 0, 0x10, 0x44, 0x00, 0x20)
)
) {
mstore(0x34, 0)
mstore(0x00, 0x095ea7b3000000000000000000000000)
pop(call(gas(), token, 0, 0x10, 0x44, codesize(), 0x00))
mstore(0x34, amount)
if iszero(
and(
or(eq(mload(0x00), 1), iszero(returndatasize())),
call(gas(), token, 0, 0x10, 0x44, 0x00, 0x20)
)
) {
mstore(0x00, 0x3e3f8f73)
revert(0x1c, 0x04)
}
}
mstore(0x34, 0)
}
}
function balanceOf(address token, address account) internal view returns (uint256 amount) {
assembly {
mstore(0x14, account)
mstore(0x00, 0x70a08231000000000000000000000000)
amount :=
mul(
mload(0x20),
and(
gt(returndatasize(), 0x1f),
staticcall(gas(), token, 0x10, 0x24, 0x20, 0x20)
)
)
}
}
}{
"compilationTarget": {
"contracts/PENGU.sol": "PenguDN404"
},
"evmVersion": "paris",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 200
},
"remappings": []
}[{"inputs":[{"internalType":"string","name":"name_","type":"string"},{"internalType":"string","name":"symbol_","type":"string"},{"internalType":"uint96","name":"initialTokenSupply","type":"uint96"},{"internalType":"address","name":"initialSupplyOwner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AlreadyInitialized","type":"error"},{"inputs":[],"name":"ApprovalCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"DNAlreadyInitialized","type":"error"},{"inputs":[],"name":"FnSelectorNotRecognized","type":"error"},{"inputs":[],"name":"InsufficientAllowance","type":"error"},{"inputs":[],"name":"InsufficientBalance","type":"error"},{"inputs":[],"name":"LinkMirrorContractFailed","type":"error"},{"inputs":[],"name":"MirrorAddressIsZero","type":"error"},{"inputs":[],"name":"NewOwnerIsZeroAddress","type":"error"},{"inputs":[],"name":"NoHandoverRequest","type":"error"},{"inputs":[],"name":"SenderNotMirror","type":"error"},{"inputs":[],"name":"TokenDoesNotExist","type":"error"},{"inputs":[],"name":"TotalSupplyOverflow","type":"error"},{"inputs":[],"name":"TransferCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"TransferFromIncorrectOwner","type":"error"},{"inputs":[],"name":"TransferToZeroAddress","type":"error"},{"inputs":[],"name":"Unauthorized","type":"error"},{"inputs":[],"name":"UnitIsZero","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"pendingOwner","type":"address"}],"name":"OwnershipHandoverCanceled","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"pendingOwner","type":"address"}],"name":"OwnershipHandoverRequested","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"target","type":"address"},{"indexed":false,"internalType":"bool","name":"status","type":"bool"}],"name":"SkipNFTSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Transfer","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"cancelOwnershipHandover","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"pendingOwner","type":"address"}],"name":"completeOwnershipHandover","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"getSkipNFT","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"mirrorERC721","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":"owner","outputs":[{"internalType":"address","name":"result","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"pendingOwner","type":"address"}],"name":"ownershipHandoverExpiresAt","outputs":[{"internalType":"uint256","name":"result","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"requestOwnershipHandover","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"string","name":"baseURI_","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"skipNFT","type":"bool"}],"name":"setSkipNFT","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","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":"result","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]
