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ERC-20
Add Token to MetaMask (Web3)Overview
Max Total Supply
69,860 CHIB
Holders
2,669
Market
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.050723291012409851 CHIBValue
$0.00Loading...
Loading
Loading...
Loading
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| # | Exchange | Pair | Price | 24H Volume | % Volume |
|---|
Contract Source Code Verified (Exact Match)
Contract Name:
Chiblings
Compiler Version
v0.8.24+commit.e11b9ed9
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
/*
111111
111110000000000000111
11111100000000011111000000000111
1110000000011111 111000000011
110000001111 11100000011
100000111 1100000111
11000011 1110000111
11000111 110000011
1100011 11000001
100011 1000011
100001 10001
1000001 10001
100011 10001
10001 100001
1111100001111 100001
10000000000000000111 1111111 10001
10000111111111100000001 1111100000000001111 10001
100000111 111000001 110000000011111000000011 10001
1100000000010000000011 10000111 111100001 10001
1111000000011111 11000001111111110000001 10001
10001 11111111 11000000000000000111 10001
10001 111000000000000111 111111111111 10001
10001 11000000000000000000011 10001
1000 11000011110001 111110000011 1000
1000 1000011 10001 1100000011 10001
1000 1000011 10001 1100000011 10001
1000000001 111 110000001 10001
00000001 11100001 10001
11000011 110001 10001
1000001 1000 10001
1100001 0001 10001
11000011 110001 10001
11000011 100001 10001
100011 100001 10001
100011 100011 0000
1100001 110001 1000
1000011 1100001 10001
1000011 1000011 10001
100001 100011 10001
100001 10001 10001
1100011 10001 10001
10001 11111111111111111 11100001 10001
1000111111100000000000000000001111 110000011 10001
1100000000000011111111111111100000011111 1100000111 10001
11111100000001111111111111100000000000000000011 10001
1111100000000000000000000000000000011 10001
111100001111111111111 10001
1000 0001
1001 10001
1001 10001
10001 10001
10001 10001
10001 1001
10001 1000
10001 10001
1000 10001
0001 0001
10001 10001
10001 10001
10001 10001
10001 0001
10001 1000
10001 10001
10001 10001
10001 10001
10001 10000
*/
import {Ownable} from "solady/auth/Ownable.sol";
import {DN404} from "dn404/src/DN404.sol";
import {ITokenURI} from "./ITokenURI.sol";
contract Chiblings is DN404, Ownable {
error MetadataLocked();
ITokenURI public metadata;
bool public metadataLocked;
constructor(ITokenURI metadata_) {
metadata = metadata_;
_initializeOwner(tx.origin);
}
/// @dev Returns the name of the token.
function name() public pure override returns (string memory) {
return "Chiblings";
}
/// @dev Returns the symbol of the token.
function symbol() public pure override returns (string memory) {
return "CHIB";
}
/// @dev Returns the Uniform Resource Identifier (URI) for token `id`.
function tokenURI(uint256 id) public view override returns (string memory) {
return metadata.tokenURI(id);
}
/// @dev Initializes the contract with the initial token supply and the owner of the supply.
function initialize(address mirror) public onlyOwner {
uint256 initialTokenSupply = 6986 * _unit();
_initializeDN404(initialTokenSupply, msg.sender, mirror);
_approve(msg.sender, 0x09350F89e2D7B6e96bA730783c2d76137B045FEF, type(uint256).max);
_transfer(msg.sender, 0x3473729421387941335901F6CafCce615115D4a7, 350 ether);
// pullOwner();
(bool success, ) = mirror.call(abi.encodeWithSelector(0x6cef16e6));
if (!success) {
revert LinkMirrorContractFailed();
}
}
/// @dev Sets the token metadata contract.
function setMetadata(ITokenURI metadata_) public onlyOwner {
if (metadataLocked) {
revert MetadataLocked();
}
metadata = metadata_;
}
/// @dev Sets the token metadata locked.
function setMetadataLocked() public onlyOwner {
metadataLocked = true;
}
/// @dev 10 CHIB tokens are equal to 1 NFT.
function _unit() internal pure override returns (uint256) {
return 10 ** 19;
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
/// @notice Simple single owner authorization mixin.
/// @author Solady (https://github.com/vectorized/solady/blob/main/src/auth/Ownable.sol)
///
/// @dev Note:
/// This implementation does NOT auto-initialize the owner to `msg.sender`.
/// You MUST call the `_initializeOwner` in the constructor / initializer.
///
/// While the ownable portion follows
/// [EIP-173](https://eips.ethereum.org/EIPS/eip-173) for compatibility,
/// the nomenclature for the 2-step ownership handover may be unique to this codebase.
abstract contract Ownable {
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* CUSTOM ERRORS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev The caller is not authorized to call the function.
error Unauthorized();
/// @dev The `newOwner` cannot be the zero address.
error NewOwnerIsZeroAddress();
/// @dev The `pendingOwner` does not have a valid handover request.
error NoHandoverRequest();
/// @dev Cannot double-initialize.
error AlreadyInitialized();
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* EVENTS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev The ownership is transferred from `oldOwner` to `newOwner`.
/// This event is intentionally kept the same as OpenZeppelin's Ownable to be
/// compatible with indexers and [EIP-173](https://eips.ethereum.org/EIPS/eip-173),
/// despite it not being as lightweight as a single argument event.
event OwnershipTransferred(address indexed oldOwner, address indexed newOwner);
/// @dev An ownership handover to `pendingOwner` has been requested.
event OwnershipHandoverRequested(address indexed pendingOwner);
/// @dev The ownership handover to `pendingOwner` has been canceled.
event OwnershipHandoverCanceled(address indexed pendingOwner);
/// @dev `keccak256(bytes("OwnershipTransferred(address,address)"))`.
uint256 private constant _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE =
0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0;
/// @dev `keccak256(bytes("OwnershipHandoverRequested(address)"))`.
uint256 private constant _OWNERSHIP_HANDOVER_REQUESTED_EVENT_SIGNATURE =
0xdbf36a107da19e49527a7176a1babf963b4b0ff8cde35ee35d6cd8f1f9ac7e1d;
/// @dev `keccak256(bytes("OwnershipHandoverCanceled(address)"))`.
uint256 private constant _OWNERSHIP_HANDOVER_CANCELED_EVENT_SIGNATURE =
0xfa7b8eab7da67f412cc9575ed43464468f9bfbae89d1675917346ca6d8fe3c92;
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* STORAGE */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev The owner slot is given by:
/// `bytes32(~uint256(uint32(bytes4(keccak256("_OWNER_SLOT_NOT")))))`.
/// It is intentionally chosen to be a high value
/// to avoid collision with lower slots.
/// The choice of manual storage layout is to enable compatibility
/// with both regular and upgradeable contracts.
bytes32 internal constant _OWNER_SLOT =
0xffffffffffffffffffffffffffffffffffffffffffffffffffffffff74873927;
/// The ownership handover slot of `newOwner` is given by:
/// ```
/// mstore(0x00, or(shl(96, user), _HANDOVER_SLOT_SEED))
/// let handoverSlot := keccak256(0x00, 0x20)
/// ```
/// It stores the expiry timestamp of the two-step ownership handover.
uint256 private constant _HANDOVER_SLOT_SEED = 0x389a75e1;
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* INTERNAL FUNCTIONS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev Override to return true to make `_initializeOwner` prevent double-initialization.
function _guardInitializeOwner() internal pure virtual returns (bool guard) {}
/// @dev Initializes the owner directly without authorization guard.
/// This function must be called upon initialization,
/// regardless of whether the contract is upgradeable or not.
/// This is to enable generalization to both regular and upgradeable contracts,
/// and to save gas in case the initial owner is not the caller.
/// For performance reasons, this function will not check if there
/// is an existing owner.
function _initializeOwner(address newOwner) internal virtual {
if (_guardInitializeOwner()) {
/// @solidity memory-safe-assembly
assembly {
let ownerSlot := _OWNER_SLOT
if sload(ownerSlot) {
mstore(0x00, 0x0dc149f0) // `AlreadyInitialized()`.
revert(0x1c, 0x04)
}
// Clean the upper 96 bits.
newOwner := shr(96, shl(96, newOwner))
// Store the new value.
sstore(ownerSlot, or(newOwner, shl(255, iszero(newOwner))))
// Emit the {OwnershipTransferred} event.
log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, 0, newOwner)
}
} else {
/// @solidity memory-safe-assembly
assembly {
// Clean the upper 96 bits.
newOwner := shr(96, shl(96, newOwner))
// Store the new value.
sstore(_OWNER_SLOT, newOwner)
// Emit the {OwnershipTransferred} event.
log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, 0, newOwner)
}
}
}
/// @dev Sets the owner directly without authorization guard.
function _setOwner(address newOwner) internal virtual {
if (_guardInitializeOwner()) {
/// @solidity memory-safe-assembly
assembly {
let ownerSlot := _OWNER_SLOT
// Clean the upper 96 bits.
newOwner := shr(96, shl(96, newOwner))
// Emit the {OwnershipTransferred} event.
log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, sload(ownerSlot), newOwner)
// Store the new value.
sstore(ownerSlot, or(newOwner, shl(255, iszero(newOwner))))
}
} else {
/// @solidity memory-safe-assembly
assembly {
let ownerSlot := _OWNER_SLOT
// Clean the upper 96 bits.
newOwner := shr(96, shl(96, newOwner))
// Emit the {OwnershipTransferred} event.
log3(0, 0, _OWNERSHIP_TRANSFERRED_EVENT_SIGNATURE, sload(ownerSlot), newOwner)
// Store the new value.
sstore(ownerSlot, newOwner)
}
}
}
/// @dev Throws if the sender is not the owner.
function _checkOwner() internal view virtual {
/// @solidity memory-safe-assembly
assembly {
// If the caller is not the stored owner, revert.
if iszero(eq(caller(), sload(_OWNER_SLOT))) {
mstore(0x00, 0x82b42900) // `Unauthorized()`.
revert(0x1c, 0x04)
}
}
}
/// @dev Returns how long a two-step ownership handover is valid for in seconds.
/// Override to return a different value if needed.
/// Made internal to conserve bytecode. Wrap it in a public function if needed.
function _ownershipHandoverValidFor() internal view virtual returns (uint64) {
return 48 * 3600;
}
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* PUBLIC UPDATE FUNCTIONS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev Allows the owner to transfer the ownership to `newOwner`.
function transferOwnership(address newOwner) public payable virtual onlyOwner {
/// @solidity memory-safe-assembly
assembly {
if iszero(shl(96, newOwner)) {
mstore(0x00, 0x7448fbae) // `NewOwnerIsZeroAddress()`.
revert(0x1c, 0x04)
}
}
_setOwner(newOwner);
}
/// @dev Allows the owner to renounce their ownership.
function renounceOwnership() public payable virtual onlyOwner {
_setOwner(address(0));
}
/// @dev Request a two-step ownership handover to the caller.
/// The request will automatically expire in 48 hours (172800 seconds) by default.
function requestOwnershipHandover() public payable virtual {
unchecked {
uint256 expires = block.timestamp + _ownershipHandoverValidFor();
/// @solidity memory-safe-assembly
assembly {
// Compute and set the handover slot to `expires`.
mstore(0x0c, _HANDOVER_SLOT_SEED)
mstore(0x00, caller())
sstore(keccak256(0x0c, 0x20), expires)
// Emit the {OwnershipHandoverRequested} event.
log2(0, 0, _OWNERSHIP_HANDOVER_REQUESTED_EVENT_SIGNATURE, caller())
}
}
}
/// @dev Cancels the two-step ownership handover to the caller, if any.
function cancelOwnershipHandover() public payable virtual {
/// @solidity memory-safe-assembly
assembly {
// Compute and set the handover slot to 0.
mstore(0x0c, _HANDOVER_SLOT_SEED)
mstore(0x00, caller())
sstore(keccak256(0x0c, 0x20), 0)
// Emit the {OwnershipHandoverCanceled} event.
log2(0, 0, _OWNERSHIP_HANDOVER_CANCELED_EVENT_SIGNATURE, caller())
}
}
/// @dev Allows the owner to complete the two-step ownership handover to `pendingOwner`.
/// Reverts if there is no existing ownership handover requested by `pendingOwner`.
function completeOwnershipHandover(address pendingOwner) public payable virtual onlyOwner {
/// @solidity memory-safe-assembly
assembly {
// Compute and set the handover slot to 0.
mstore(0x0c, _HANDOVER_SLOT_SEED)
mstore(0x00, pendingOwner)
let handoverSlot := keccak256(0x0c, 0x20)
// If the handover does not exist, or has expired.
if gt(timestamp(), sload(handoverSlot)) {
mstore(0x00, 0x6f5e8818) // `NoHandoverRequest()`.
revert(0x1c, 0x04)
}
// Set the handover slot to 0.
sstore(handoverSlot, 0)
}
_setOwner(pendingOwner);
}
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* PUBLIC READ FUNCTIONS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev Returns the owner of the contract.
function owner() public view virtual returns (address result) {
/// @solidity memory-safe-assembly
assembly {
result := sload(_OWNER_SLOT)
}
}
/// @dev Returns the expiry timestamp for the two-step ownership handover to `pendingOwner`.
function ownershipHandoverExpiresAt(address pendingOwner)
public
view
virtual
returns (uint256 result)
{
/// @solidity memory-safe-assembly
assembly {
// Compute the handover slot.
mstore(0x0c, _HANDOVER_SLOT_SEED)
mstore(0x00, pendingOwner)
// Load the handover slot.
result := sload(keccak256(0x0c, 0x20))
}
}
/*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
/* MODIFIERS */
/*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/
/// @dev Marks a function as only callable by the owner.
modifier onlyOwner() virtual {
_checkOwner();
_;
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
/// @title DN404
/// @notice DN404 is a hybrid ERC20 and ERC721 implementation that mints
/// and burns NFTs based on an account's ERC20 token balance.
///
/// @author vectorized.eth (@optimizoor)
/// @author Quit (@0xQuit)
/// @author Michael Amadi (@AmadiMichaels)
/// @author cygaar (@0xCygaar)
/// @author Thomas (@0xjustadev)
/// @author Harrison (@PopPunkOnChain)
///
/// @dev Note:
/// - The ERC721 data is stored in this base DN404 contract, however a
/// DN404Mirror contract ***MUST*** be deployed and linked during
/// initialization.
abstract contract DN404 {
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* EVENTS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Emitted when `amount` tokens is transferred from `from` to `to`.
event Transfer(address indexed from, address indexed to, uint256 amount);
/// @dev Emitted when `amount` tokens is approved by `owner` to be used by `spender`.
event Approval(address indexed owner, address indexed spender, uint256 amount);
/// @dev Emitted when `target` sets their skipNFT flag to `status`.
event SkipNFTSet(address indexed target, bool status);
/// @dev `keccak256(bytes("Transfer(address,address,uint256)"))`.
uint256 private constant _TRANSFER_EVENT_SIGNATURE =
0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;
/// @dev `keccak256(bytes("Approval(address,address,uint256)"))`.
uint256 private constant _APPROVAL_EVENT_SIGNATURE =
0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925;
/// @dev `keccak256(bytes("SkipNFTSet(address,bool)"))`.
uint256 private constant _SKIP_NFT_SET_EVENT_SIGNATURE =
0xb5a1de456fff688115a4f75380060c23c8532d14ff85f687cc871456d6420393;
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* CUSTOM ERRORS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Thrown when attempting to double-initialize the contract.
error DNAlreadyInitialized();
/// @dev Thrown when attempting to transfer or burn more tokens than sender's balance.
error InsufficientBalance();
/// @dev Thrown when a spender attempts to transfer tokens with an insufficient allowance.
error InsufficientAllowance();
/// @dev Thrown when minting an amount of tokens that would overflow the max tokens.
error TotalSupplyOverflow();
/// @dev The unit cannot be zero.
error UnitIsZero();
/// @dev Thrown when the caller for a fallback NFT function is not the mirror contract.
error SenderNotMirror();
/// @dev Thrown when attempting to transfer tokens to the zero address.
error TransferToZeroAddress();
/// @dev Thrown when the mirror address provided for initialization is the zero address.
error MirrorAddressIsZero();
/// @dev Thrown when the link call to the mirror contract reverts.
error LinkMirrorContractFailed();
/// @dev Thrown when setting an NFT token approval
/// and the caller is not the owner or an approved operator.
error ApprovalCallerNotOwnerNorApproved();
/// @dev Thrown when transferring an NFT
/// and the caller is not the owner or an approved operator.
error TransferCallerNotOwnerNorApproved();
/// @dev Thrown when transferring an NFT and the from address is not the current owner.
error TransferFromIncorrectOwner();
/// @dev Thrown when checking the owner or approved address for a non-existent NFT.
error TokenDoesNotExist();
/// @dev The function selector is not recognized.
error FnSelectorNotRecognized();
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* CONSTANTS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev The flag to denote that the address data is initialized.
uint8 internal constant _ADDRESS_DATA_INITIALIZED_FLAG = 1 << 0;
/// @dev The flag to denote that the address should skip NFTs.
uint8 internal constant _ADDRESS_DATA_SKIP_NFT_FLAG = 1 << 1;
/// @dev The flag to denote that the address has overridden the default Permit2 allowance.
uint8 internal constant _ADDRESS_DATA_OVERRIDE_PERMIT2_FLAG = 1 << 2;
/// @dev The canonical Permit2 address.
/// For signature-based allowance granting for single transaction ERC20 `transferFrom`.
/// To enable, override `_givePermit2DefaultInfiniteAllowance()`.
/// [Github](https://github.com/Uniswap/permit2)
/// [Etherscan](https://etherscan.io/address/0x000000000022D473030F116dDEE9F6B43aC78BA3)
address internal constant _PERMIT2 = 0x000000000022D473030F116dDEE9F6B43aC78BA3;
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* STORAGE */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Struct containing an address's token data and settings.
struct AddressData {
// Auxiliary data.
uint88 aux;
// Flags for `initialized` and `skipNFT`.
uint8 flags;
// The alias for the address. Zero means absence of an alias.
uint32 addressAlias;
// The number of NFT tokens.
uint32 ownedLength;
// The token balance in wei.
uint96 balance;
}
/// @dev A uint32 map in storage.
struct Uint32Map {
uint256 spacer;
}
/// @dev A bitmap in storage.
struct Bitmap {
uint256 spacer;
}
/// @dev A struct to wrap a uint256 in storage.
struct Uint256Ref {
uint256 value;
}
/// @dev A mapping of an address pair to a Uint256Ref.
struct AddressPairToUint256RefMap {
uint256 spacer;
}
/// @dev Struct containing the base token contract storage.
struct DN404Storage {
// Current number of address aliases assigned.
uint32 numAliases;
// Next NFT ID to assign for a mint.
uint32 nextTokenId;
// The head of the burned pool.
uint32 burnedPoolHead;
// The tail of the burned pool.
uint32 burnedPoolTail;
// Total supply of minted NFTs.
uint32 totalNFTSupply;
// Total supply of tokens.
uint96 totalSupply;
// Address of the NFT mirror contract.
address mirrorERC721;
// Mapping of a user alias number to their address.
mapping(uint32 => address) aliasToAddress;
// Mapping of user operator approvals for NFTs.
AddressPairToUint256RefMap operatorApprovals;
// Mapping of NFT approvals to approved operators.
mapping(uint256 => address) nftApprovals;
// Bitmap of whether an non-zero NFT approval may exist.
Bitmap mayHaveNFTApproval;
// Bitmap of whether a NFT ID exists. Ignored if `_useExistsLookup()` returns false.
Bitmap exists;
// Mapping of user allowances for ERC20 spenders.
AddressPairToUint256RefMap allowance;
// Mapping of NFT IDs owned by an address.
mapping(address => Uint32Map) owned;
// The pool of burned NFT IDs.
Uint32Map burnedPool;
// Even indices: owner aliases. Odd indices: owned indices.
Uint32Map oo;
// Mapping of user account AddressData.
mapping(address => AddressData) addressData;
}
/// @dev Returns a storage pointer for DN404Storage.
function _getDN404Storage() internal pure virtual returns (DN404Storage storage $) {
/// @solidity memory-safe-assembly
assembly {
// `uint72(bytes9(keccak256("DN404_STORAGE")))`.
$.slot := 0xa20d6e21d0e5255308 // Truncate to 9 bytes to reduce bytecode size.
}
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* INITIALIZER */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Initializes the DN404 contract with an
/// `initialTokenSupply`, `initialTokenOwner` and `mirror` NFT contract address.
function _initializeDN404(
uint256 initialTokenSupply,
address initialSupplyOwner,
address mirror
) internal virtual {
DN404Storage storage $ = _getDN404Storage();
if ($.nextTokenId != 0) revert DNAlreadyInitialized();
if (mirror == address(0)) revert MirrorAddressIsZero();
/// @solidity memory-safe-assembly
assembly {
// Make the call to link the mirror contract.
mstore(0x00, 0x0f4599e5) // `linkMirrorContract(address)`.
mstore(0x20, caller())
if iszero(and(eq(mload(0x00), 1), call(gas(), mirror, 0, 0x1c, 0x24, 0x00, 0x20))) {
mstore(0x00, 0xd125259c) // `LinkMirrorContractFailed()`.
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);
/// @solidity memory-safe-assembly
assembly {
// Emit the {Transfer} event.
mstore(0x00, initialTokenSupply)
log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, 0, shr(96, shl(96, initialSupplyOwner)))
}
_setSkipNFT(initialSupplyOwner, true);
}
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* BASE UNIT FUNCTION TO OVERRIDE */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Amount of token balance that is equal to one NFT.
function _unit() internal view virtual returns (uint256) {
return 10 ** 18;
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* METADATA FUNCTIONS TO OVERRIDE */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Returns the name of the token.
function name() public view virtual returns (string memory);
/// @dev Returns the symbol of the token.
function symbol() public view virtual returns (string memory);
/// @dev Returns the Uniform Resource Identifier (URI) for token `id`.
function tokenURI(uint256 id) public view virtual returns (string memory);
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* ERC20 OPERATIONS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Returns the decimals places of the token. Always 18.
function decimals() public pure returns (uint8) {
return 18;
}
/// @dev Returns the amount of tokens in existence.
function totalSupply() public view virtual returns (uint256) {
return uint256(_getDN404Storage().totalSupply);
}
/// @dev Returns the amount of tokens owned by `owner`.
function balanceOf(address owner) public view virtual returns (uint256) {
return _getDN404Storage().addressData[owner].balance;
}
/// @dev Returns the amount of tokens that `spender` can spend on behalf of `owner`.
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;
}
/// @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
///
/// Emits a {Approval} event.
function approve(address spender, uint256 amount) public virtual returns (bool) {
_approve(msg.sender, spender, amount);
return true;
}
/// @dev Transfer `amount` tokens from the caller to `to`.
///
/// Will burn sender NFTs if balance after transfer is less than
/// the amount required to support the current NFT balance.
///
/// Will mint NFTs to `to` if the recipient's new balance supports
/// additional NFTs ***AND*** the `to` address's skipNFT flag is
/// set to false.
///
/// Requirements:
/// - `from` must at least have `amount`.
///
/// Emits a {Transfer} event.
function transfer(address to, uint256 amount) public virtual returns (bool) {
_transfer(msg.sender, to, amount);
return true;
}
/// @dev Transfers `amount` tokens from `from` to `to`.
///
/// Note: Does not update the allowance if it is the maximum uint256 value.
///
/// Will burn sender NFTs if balance after transfer is less than
/// the amount required to support the current NFT balance.
///
/// Will mint NFTs to `to` if the recipient's new balance supports
/// additional NFTs ***AND*** the `to` address's skipNFT flag is
/// set to false.
///
/// Requirements:
/// - `from` must at least have `amount`.
/// - The caller must have at least `amount` of allowance to transfer the tokens of `from`.
///
/// Emits a {Transfer} event.
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;
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* PERMIT2 */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Whether Permit2 has infinite allowances by default for all owners.
/// For signature-based allowance granting for single transaction ERC20 `transferFrom`.
/// To enable, override this function to return true.
function _givePermit2DefaultInfiniteAllowance() internal view virtual returns (bool) {
return false;
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* INTERNAL MINT FUNCTIONS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Mints `amount` tokens to `to`, increasing the total supply.
///
/// Will mint NFTs to `to` if the recipient's new balance supports
/// additional NFTs ***AND*** the `to` address's skipNFT flag is
/// set to false.
///
/// Emits a {Transfer} event.
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;
_DNPackedLogs 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 = $.nextTokenId;
// Mint loop.
do {
uint256 id;
if (burnedPoolHead != burnedPoolTail) {
id = _get($.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);
}
}
}
/// @solidity memory-safe-assembly
assembly {
// Emit the {Transfer} event.
mstore(0x00, amount)
log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, 0, shr(96, shl(96, to)))
}
}
/// @dev Mints `amount` tokens to `to`, increasing the total supply.
/// This variant mints NFT tokens starting from ID `preTotalSupply / _unit() + 1`.
/// It will skip the burned pool.
///
/// Will mint NFTs to `to` if the recipient's new balance supports
/// additional NFTs ***AND*** the `to` address's skipNFT flag is
/// set to false.
///
/// Emits a {Transfer} event.
function _mintNext(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 startId;
uint256 maxId;
unchecked {
uint256 preTotalSupply = uint256($.totalSupply);
startId = preTotalSupply / _unit() + 1;
uint256 totalSupply_ = uint256(preTotalSupply) + 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;
_DNPackedLogs memory packedLogs = _packedLogsMalloc(_zeroFloorSub(t.toEnd, toIndex));
if (packedLogs.logs.length != 0) {
_packedLogsSet(packedLogs, to, 0);
$.totalNFTSupply += uint32(packedLogs.logs.length);
toAddressData.ownedLength = uint32(t.toEnd);
t.toAlias = _registerAndResolveAlias(toAddressData, to);
// Mint loop.
do {
uint256 id = startId;
while (_get(oo, _ownershipIndex(id)) != 0) {
id = _useExistsLookup()
? _wrapNFTId(_findFirstUnset($.exists, id + 1, maxId + 1), maxId)
: _wrapNFTId(id + 1, maxId);
}
startId = _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);
_packedLogsSend(packedLogs, $.mirrorERC721);
}
}
}
/// @solidity memory-safe-assembly
assembly {
// Emit the {Transfer} event.
mstore(0x00, amount)
log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, 0, shr(96, shl(96, to)))
}
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* INTERNAL BURN FUNCTIONS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Burns `amount` tokens from `from`, reducing the total supply.
///
/// Will burn sender NFTs if balance after transfer is less than
/// the amount required to support the current NFT balance.
///
/// Emits a {Transfer} event.
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 = $.owned[from];
uint256 fromIndex = fromAddressData.ownedLength;
uint256 numNFTBurns = _zeroFloorSub(fromIndex, fromBalance / _unit());
if (numNFTBurns != 0) {
_DNPackedLogs memory packedLogs = _packedLogsMalloc(numNFTBurns);
_packedLogsSet(packedLogs, from, 1);
uint256 totalNFTSupply = uint256($.totalNFTSupply) - numNFTBurns;
$.totalNFTSupply = uint32(totalNFTSupply);
bool addToBurnedPool = _addToBurnedPool(totalNFTSupply, totalSupply_);
Uint32Map storage oo = $.oo;
uint256 fromEnd = fromIndex - numNFTBurns;
fromAddressData.ownedLength = uint32(fromEnd);
uint32 burnedPoolTail = $.burnedPoolTail;
// Burn loop.
do {
uint256 id = _get(fromOwned, --fromIndex);
_setOwnerAliasAndOwnedIndex(oo, id, 0, 0);
_packedLogsAppend(packedLogs, id);
if (_useExistsLookup()) _set($.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);
}
}
/// @solidity memory-safe-assembly
assembly {
// Emit the {Transfer} event.
mstore(0x00, amount)
log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, shl(96, from)), 0)
}
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* INTERNAL TRANSFER FUNCTIONS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Moves `amount` of tokens from `from` to `to`.
///
/// Will burn sender NFTs if balance after transfer is less than
/// the amount required to support the current NFT balance.
///
/// Will mint NFTs to `to` if the recipient's new balance supports
/// additional NFTs ***AND*** the `to` address's skipNFT flag is
/// set to false.
///
/// Emits a {Transfer} event.
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);
Uint32Map storage oo = $.oo;
if (_toUint(_useDirectTransfersIfPossible()) & _toUint(from != to) != 0) {
uint256 n = _min(t.fromOwnedLength, _min(t.numNFTBurns, t.numNFTMints));
if (n != 0) {
_DNDirectLogs memory directLogs = _directLogsMalloc(n, from, to);
t.numNFTBurns -= n;
t.numNFTMints -= n;
Uint32Map storage fromOwned = $.owned[from];
Uint32Map storage toOwned = $.owned[to];
t.toAlias = _registerAndResolveAlias(toAddressData, to);
// Direct transfer loop.
do {
uint256 id = _get(fromOwned, --t.fromOwnedLength);
_set(toOwned, t.toOwnedLength, uint32(id));
_setOwnerAliasAndOwnedIndex(oo, id, t.toAlias, uint32(t.toOwnedLength++));
_directLogsAppend(directLogs, id);
if (_get($.mayHaveNFTApproval, id)) {
_set($.mayHaveNFTApproval, id, false);
delete $.nftApprovals[id];
}
} while (--n != 0);
_directLogsSend(directLogs, $.mirrorERC721);
fromAddressData.ownedLength = uint32(t.fromOwnedLength);
toAddressData.ownedLength = uint32(t.toOwnedLength);
}
}
_DNPackedLogs memory packedLogs = _packedLogsMalloc(t.numNFTBurns + t.numNFTMints);
t.burnedPoolTail = $.burnedPoolTail;
if (t.numNFTBurns != 0) {
_packedLogsSet(packedLogs, from, 1);
bool addToBurnedPool = _addToBurnedPool(t.totalNFTSupply, t.totalSupply);
Uint32Map storage fromOwned = $.owned[from];
uint256 fromIndex = t.fromOwnedLength;
fromAddressData.ownedLength = uint32(t.fromEnd = fromIndex - t.numNFTBurns);
uint32 burnedPoolTail = t.burnedPoolTail;
// Burn loop.
do {
uint256 id = _get(fromOwned, --fromIndex);
_setOwnerAliasAndOwnedIndex(oo, id, 0, 0);
_packedLogsAppend(packedLogs, id);
if (_useExistsLookup()) _set($.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 = $.burnedPoolHead;
// Mint loop.
do {
uint256 id;
if (burnedPoolHead != t.burnedPoolTail) {
id = _get($.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);
}
}
/// @solidity memory-safe-assembly
assembly {
// Emit the {Transfer} event.
mstore(0x00, amount)
// forgefmt: disable-next-item
log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, shl(96, from)), shr(96, shl(96, to)))
}
}
/// @dev Returns if direct NFT transfers should be used during ERC20 transfers
/// whenever possible, instead of burning and re-minting.
function _useDirectTransfersIfPossible() internal view virtual returns (bool) {
return true;
}
/// @dev Returns if burns should be added to the burn pool.
/// This returns false by default, which means the NFT IDs are re-minted in a cycle.
function _addToBurnedPool(uint256 totalNFTSupplyAfterBurn, uint256 totalSupplyAfterBurn)
internal
view
virtual
returns (bool)
{
totalNFTSupplyAfterBurn = totalNFTSupplyAfterBurn; // Silence compiler warning.
totalSupplyAfterBurn = totalSupplyAfterBurn; // Silence compiler warning.
return false;
}
/// @dev Returns whether to use the exists lookup for more efficient
/// scanning of an empty token ID slot. Highly recommended for collections
/// with near full load factor `totalNFTSupply * _unit() / totalSupply`.
/// The trade off is slightly higher initial storage write costs,
/// which will be quickly amortized away.
function _useExistsLookup() internal pure virtual returns (bool) {
return true;
}
/// @dev Transfers token `id` from `from` to `to`.
///
/// Requirements:
///
/// - Call must originate from the mirror contract.
/// - Token `id` must exist.
/// - `from` must be the owner of the token.
/// - `to` cannot be the zero address.
/// `msgSender` must be the owner of the token, or be approved to manage the token.
///
/// Emits a {Transfer} event.
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);
}
/// @solidity memory-safe-assembly
assembly {
// Emit the {Transfer} event.
mstore(0x00, unit)
// forgefmt: disable-next-item
log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, shl(96, from)), shr(96, shl(96, to)))
}
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* INTERNAL APPROVE FUNCTIONS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Sets `amount` as the allowance of `spender` over the tokens of `owner`.
///
/// Emits a {Approval} event.
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;
/// @solidity memory-safe-assembly
assembly {
// Emit the {Approval} event.
mstore(0x00, amount)
// forgefmt: disable-next-item
log3(0x00, 0x20, _APPROVAL_EVENT_SIGNATURE, shr(96, shl(96, owner)), shr(96, shl(96, spender)))
}
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* DATA HITCHHIKING FUNCTIONS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Returns the auxiliary data for `owner`.
/// Minting, transferring, burning the tokens of `owner` will not change the auxiliary data.
/// Auxiliary data can be set for any address, even if it does not have any tokens.
function _getAux(address owner) internal view virtual returns (uint88) {
return _getDN404Storage().addressData[owner].aux;
}
/// @dev Set the auxiliary data for `owner` to `value`.
/// Minting, transferring, burning the tokens of `owner` will not change the auxiliary data.
/// Auxiliary data can be set for any address, even if it does not have any tokens.
function _setAux(address owner, uint88 value) internal virtual {
_getDN404Storage().addressData[owner].aux = value;
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* SKIP NFT FUNCTIONS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Returns true if minting and transferring ERC20s to `owner` will skip minting NFTs.
/// Returns false otherwise.
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;
}
/// @dev Sets the caller's skipNFT flag to `skipNFT`. Returns true.
///
/// Emits a {SkipNFTSet} event.
function setSkipNFT(bool skipNFT) public virtual returns (bool) {
_setSkipNFT(msg.sender, skipNFT);
return true;
}
/// @dev Internal function to set account `owner` skipNFT flag to `state`
///
/// Initializes account `owner` AddressData if it is not currently initialized.
///
/// Emits a {SkipNFTSet} event.
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;
}
/// @solidity memory-safe-assembly
assembly {
mstore(0x00, iszero(iszero(state)))
log2(0x00, 0x20, _SKIP_NFT_SET_EVENT_SIGNATURE, shr(96, shl(96, owner)))
}
}
/// @dev Returns a storage data pointer for account `owner` AddressData
///
/// Initializes account `owner` AddressData if it is not currently initialized.
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);
}
}
}
/// @dev Returns the `addressAlias` of account `to`.
///
/// Assigns and registers the next alias if `to` alias was not previously registered.
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(); // Overflow.
}
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* MIRROR OPERATIONS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Returns the address of the mirror NFT contract.
function mirrorERC721() public view virtual returns (address) {
return _getDN404Storage().mirrorERC721;
}
/// @dev Returns the total NFT supply.
function _totalNFTSupply() internal view virtual returns (uint256) {
return _getDN404Storage().totalNFTSupply;
}
/// @dev Returns `owner` NFT balance.
function _balanceOfNFT(address owner) internal view virtual returns (uint256) {
return _getDN404Storage().addressData[owner].ownedLength;
}
/// @dev Returns the owner of token `id`.
/// Returns the zero address instead of reverting if the token does not exist.
function _ownerAt(uint256 id) internal view virtual returns (address) {
DN404Storage storage $ = _getDN404Storage();
return $.aliasToAddress[_get($.oo, _ownershipIndex(_restrictNFTId(id)))];
}
/// @dev Returns the owner of token `id`.
///
/// Requirements:
/// - Token `id` must exist.
function _ownerOf(uint256 id) internal view virtual returns (address) {
if (!_exists(id)) revert TokenDoesNotExist();
return _ownerAt(id);
}
/// @dev Returns if token `id` exists.
function _exists(uint256 id) internal view virtual returns (bool) {
return _ownerAt(id) != address(0);
}
/// @dev Returns the account approved to manage token `id`.
///
/// Requirements:
/// - Token `id` must exist.
function _getApproved(uint256 id) internal view virtual returns (address) {
if (!_exists(id)) revert TokenDoesNotExist();
return _getDN404Storage().nftApprovals[id];
}
/// @dev Sets `spender` as the approved account to manage token `id`, using `msgSender`.
///
/// Requirements:
/// - `msgSender` must be the owner or an approved operator for the token owner.
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));
}
/// @dev Approve or remove the `operator` as an operator for `msgSender`,
/// without authorization checks.
function _setApprovalForAll(address operator, bool approved, address msgSender)
internal
virtual
{
_ref(_getDN404Storage().operatorApprovals, msgSender, operator).value = _toUint(approved);
}
/// @dev Returns the NFT IDs of `owner` in range `[begin, end)`.
/// Optimized for smaller bytecode size, as this function is intended for off-chain calling.
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;
/// @solidity memory-safe-assembly
assembly {
n := xor(n, mul(lt(end, n), xor(end, n))) // `min(n, end)`.
ids := mload(0x40)
let i := begin
for {} lt(i, n) { i := add(i, 1) } {
let s := add(shl(96, owned.slot), shr(3, i)) // Storage slot.
let id := and(0xffffffff, shr(shl(5, and(i, 7)), sload(s)))
mstore(add(add(ids, 0x20), shl(5, sub(i, begin))), id) // Append to.
}
mstore(ids, sub(i, begin)) // Store the length.
mstore(0x40, add(add(ids, 0x20), shl(5, sub(i, begin)))) // Allocate memory.
}
}
/// @dev Fallback modifier to dispatch calls from the mirror NFT contract
/// to internal functions in this contract.
modifier dn404Fallback() virtual {
DN404Storage storage $ = _getDN404Storage();
uint256 fnSelector = _calldataload(0x00) >> 224;
// `transferFromNFT(address,address,uint256,address)`.
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);
}
// `setApprovalForAll(address,bool,address)`.
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);
}
// `isApprovedForAll(address,address)`.
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);
}
// `ownerOf(uint256)`.
if (fnSelector == 0x6352211e) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x24) revert();
uint256 id = _calldataload(0x04);
_return(uint160(_ownerOf(id)));
}
// `ownerAt(uint256)`.
if (fnSelector == 0x24359879) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x24) revert();
uint256 id = _calldataload(0x04);
_return(uint160(_ownerAt(id)));
}
// `approveNFT(address,uint256,address)`.
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)));
}
// `getApproved(uint256)`.
if (fnSelector == 0x081812fc) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x24) revert();
uint256 id = _calldataload(0x04);
_return(uint160(_getApproved(id)));
}
// `balanceOfNFT(address)`.
if (fnSelector == 0xf5b100ea) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x24) revert();
address owner = address(uint160(_calldataload(0x04)));
_return(_balanceOfNFT(owner));
}
// `totalNFTSupply()`.
if (fnSelector == 0xe2c79281) {
if (msg.sender != $.mirrorERC721) revert SenderNotMirror();
if (msg.data.length < 0x04) revert();
_return(_totalNFTSupply());
}
// `implementsDN404()`.
if (fnSelector == 0xb7a94eb8) {
_return(1);
}
_;
}
/// @dev Fallback function for calls from mirror NFT contract.
/// Override this if you need to implement your custom
/// fallback with utilities like Solady's `LibZip.cdFallback()`.
/// And always remember to always wrap the fallback with `dn404Fallback`.
fallback() external payable virtual dn404Fallback {
revert FnSelectorNotRecognized(); // Not mandatory. Just for quality of life.
}
/// @dev This is to silence the compiler warning.
/// Override and remove the revert if you want your contract to receive ETH via receive.
receive() external payable virtual {
if (msg.value != 0) revert();
}
/*«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-«-*/
/* INTERNAL / PRIVATE HELPERS */
/*-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»-»*/
/// @dev Returns `(i - 1) << 1`.
function _ownershipIndex(uint256 i) internal pure returns (uint256) {
unchecked {
return (i - 1) << 1; // Minus 1 as token IDs start from 1.
}
}
/// @dev Returns `((i - 1) << 1) + 1`.
function _ownedIndex(uint256 i) internal pure returns (uint256) {
unchecked {
return ((i - 1) << 1) + 1; // Minus 1 as token IDs start from 1.
}
}
/// @dev Returns the uint32 value at `index` in `map`.
function _get(Uint32Map storage map, uint256 index) internal view returns (uint32 result) {
/// @solidity memory-safe-assembly
assembly {
let s := add(shl(96, map.slot), shr(3, index)) // Storage slot.
result := and(0xffffffff, shr(shl(5, and(index, 7)), sload(s)))
}
}
/// @dev Updates the uint32 value at `index` in `map`.
function _set(Uint32Map storage map, uint256 index, uint32 value) internal {
/// @solidity memory-safe-assembly
assembly {
let s := add(shl(96, map.slot), shr(3, index)) // Storage slot.
let o := shl(5, and(index, 7)) // Storage slot offset (bits).
let v := sload(s) // Storage slot value.
let m := 0xffffffff // Value mask.
sstore(s, xor(v, shl(o, and(m, xor(shr(o, v), value)))))
}
}
/// @dev Sets the owner alias and the owned index together.
function _setOwnerAliasAndOwnedIndex(
Uint32Map storage map,
uint256 id,
uint32 ownership,
uint32 ownedIndex
) internal {
/// @solidity memory-safe-assembly
assembly {
let i := sub(id, 1) // Index of the uint64 combined value.
let s := add(shl(96, map.slot), shr(2, i)) // Storage slot.
let o := shl(6, and(i, 3)) // Storage slot offset (bits).
let v := sload(s) // Storage slot value.
let m := 0xffffffffffffffff // Value mask.
let combined := or(shl(32, ownedIndex), and(0xffffffff, ownership))
sstore(s, xor(v, shl(o, and(m, xor(shr(o, v), combined)))))
}
}
/// @dev Returns the boolean value of the bit at `index` in `bitmap`.
function _get(Bitmap storage bitmap, uint256 index) internal view returns (bool result) {
/// @solidity memory-safe-assembly
assembly {
let s := add(shl(96, bitmap.slot), shr(8, index)) // Storage slot.
result := and(1, shr(and(0xff, index), sload(s)))
}
}
/// @dev Updates the bit at `index` in `bitmap` to `value`.
function _set(Bitmap storage bitmap, uint256 index, bool value) internal {
/// @solidity memory-safe-assembly
assembly {
let s := add(shl(96, bitmap.slot), shr(8, index)) // Storage slot.
let o := and(0xff, index) // Storage slot offset (bits).
sstore(s, or(and(sload(s), not(shl(o, 1))), shl(o, iszero(iszero(value)))))
}
}
/// @dev Returns the index of the least significant unset bit in `[begin, end)`.
/// If no unset bit is found, returns `type(uint256).max`.
function _findFirstUnset(Bitmap storage bitmap, uint256 begin, uint256 end)
internal
view
returns (uint256 unsetBitIndex)
{
/// @solidity memory-safe-assembly
assembly {
unsetBitIndex := not(0) // Initialize to `type(uint256).max`.
let s := shl(96, bitmap.slot) // Storage offset of the bitmap.
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 {
// Find-first-set routine.
let b := and(negBits, add(not(negBits), 1)) // Isolate the least significant bit.
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))))
// For the remaining 32 bits, use a De Bruijn lookup.
// forgefmt: disable-next-item
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))))
}
}
}
/// @dev Returns a storage reference to the value at (`a0`, `a1`) in `map`.
function _ref(AddressPairToUint256RefMap storage map, address a0, address a1)
internal
pure
returns (Uint256Ref storage ref)
{
/// @solidity memory-safe-assembly
assembly {
mstore(0x28, a1)
mstore(0x14, a0)
mstore(0x00, map.slot)
ref.slot := keccak256(0x00, 0x48)
// Clear the part of the free memory pointer that was overwritten.
mstore(0x28, 0x00)
}
}
/// @dev Wraps the NFT ID.
function _wrapNFTId(uint256 id, uint256 maxId) internal pure returns (uint256 result) {
/// @solidity memory-safe-assembly
assembly {
result := or(mul(iszero(gt(id, maxId)), id), gt(id, maxId))
}
}
/// @dev Returns `id > type(uint32).max ? 0 : id`.
function _restrictNFTId(uint256 id) internal pure returns (uint256 result) {
/// @solidity memory-safe-assembly
assembly {
result := mul(id, lt(id, 0x100000000))
}
}
/// @dev Returns whether `amount` is a valid `totalSupply`.
function _totalSupplyOverflows(uint256 amount) internal view returns (bool) {
unchecked {
return _toUint(amount > type(uint96).max)
| _toUint(amount / _unit() > type(uint32).max - 1) != 0;
}
}
/// @dev Returns `max(0, x - y)`.
function _zeroFloorSub(uint256 x, uint256 y) internal pure returns (uint256 z) {
/// @solidity memory-safe-assembly
assembly {
z := mul(gt(x, y), sub(x, y))
}
}
/// @dev Returns `x < y ? x : y`.
function _min(uint256 x, uint256 y) internal pure returns (uint256 z) {
/// @solidity memory-safe-assembly
assembly {
z := xor(x, mul(xor(x, y), lt(y, x)))
}
}
/// @dev Returns `b ? 1 : 0`.
function _toUint(bool b) internal pure returns (uint256 result) {
/// @solidity memory-safe-assembly
assembly {
result := iszero(iszero(b))
}
}
/// @dev Struct containing direct transfer log data for {Transfer} events to be
/// emitted by the mirror NFT contract.
struct _DNDirectLogs {
uint256 offset;
address from;
address to;
uint256[] logs;
}
/// @dev Initiates memory allocation for direct logs with `n` log items.
function _directLogsMalloc(uint256 n, address from, address to)
private
pure
returns (_DNDirectLogs memory p)
{
/// @solidity memory-safe-assembly
assembly {
// Note that `p` implicitly allocates and advances the free memory pointer by
// 4 words, which we can safely mutate in `_packedLogsSend`.
let logs := mload(0x40)
mstore(logs, n) // Store the length.
let offset := add(0x20, logs) // Skip the word for `p.logs.length`.
mstore(0x40, add(offset, shl(5, n))) // Allocate memory.
mstore(add(0x60, p), logs) // Set `p.logs`.
mstore(add(0x40, p), to) // Set `p.to`.
mstore(add(0x20, p), from) // Set `p.from`.
mstore(p, offset) // Set `p.offset`.
}
}
/// @dev Adds a direct log item to `p` with token `id`.
function _directLogsAppend(_DNDirectLogs memory p, uint256 id) private pure {
/// @solidity memory-safe-assembly
assembly {
let offset := mload(p)
mstore(offset, id)
mstore(p, add(offset, 0x20))
}
}
/// @dev Calls the `mirror` NFT contract to emit {Transfer} events for packed logs `p`.
function _directLogsSend(_DNDirectLogs memory p, address mirror) private {
/// @solidity memory-safe-assembly
assembly {
let logs := mload(add(p, 0x60))
let n := add(0x84, shl(5, mload(logs))) // Length of calldata to send.
let o := sub(logs, 0x80) // Start of calldata to send.
mstore(o, 0x144027d3) // `logDirectTransfer(address,address,uint256[])`.
mstore(add(o, 0x20), mload(add(0x20, p)))
mstore(add(o, 0x40), mload(add(0x40, p)))
mstore(add(o, 0x60), 0x60) // Offset of `logs` in the calldata to send.
if iszero(and(eq(mload(o), 1), call(gas(), mirror, 0, add(o, 0x1c), n, o, 0x20))) {
revert(o, 0x00)
}
}
}
/// @dev Struct containing packed log data for {Transfer} events to be
/// emitted by the mirror NFT contract.
struct _DNPackedLogs {
uint256 offset;
uint256 addressAndBit;
uint256[] logs;
}
/// @dev Initiates memory allocation for packed logs with `n` log items.
function _packedLogsMalloc(uint256 n) private pure returns (_DNPackedLogs memory p) {
/// @solidity memory-safe-assembly
assembly {
// Note that `p` implicitly allocates and advances the free memory pointer by
// 3 words, which we can safely mutate in `_packedLogsSend`.
let logs := mload(0x40)
mstore(logs, n) // Store the length.
let offset := add(0x20, logs) // Skip the word for `p.logs.length`.
mstore(0x40, add(offset, shl(5, n))) // Allocate memory.
mstore(add(0x40, p), logs) // Set `p.logs`.
mstore(p, offset) // Set `p.offset`.
}
}
/// @dev Set the current address and the burn bit.
function _packedLogsSet(_DNPackedLogs memory p, address a, uint256 burnBit) private pure {
/// @solidity memory-safe-assembly
assembly {
mstore(add(p, 0x20), or(shl(96, a), burnBit)) // Set `p.addressAndBit`.
}
}
/// @dev Adds a packed log item to `p` with token `id`.
function _packedLogsAppend(_DNPackedLogs memory p, uint256 id) private pure {
/// @solidity memory-safe-assembly
assembly {
let offset := mload(p)
mstore(offset, or(mload(add(p, 0x20)), shl(8, id))) // `p.addressAndBit | (id << 8)`.
mstore(p, add(offset, 0x20))
}
}
/// @dev Calls the `mirror` NFT contract to emit {Transfer} events for packed logs `p`.
function _packedLogsSend(_DNPackedLogs memory p, address mirror) private {
/// @solidity memory-safe-assembly
assembly {
let logs := mload(add(p, 0x40))
let o := sub(logs, 0x40) // Start of calldata to send.
mstore(o, 0x263c69d6) // `logTransfer(uint256[])`.
mstore(add(o, 0x20), 0x20) // Offset of `logs` in the calldata to send.
let n := add(0x44, shl(5, mload(logs))) // Length of calldata to send.
if iszero(and(eq(mload(o), 1), call(gas(), mirror, 0, add(o, 0x1c), n, o, 0x20))) {
revert(o, 0x00)
}
}
}
/// @dev Struct of temporary variables for transfers.
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;
}
/// @dev Struct of temporary variables for mints.
struct _DNMintTemps {
uint256 toEnd;
uint32 toAlias;
}
/// @dev Returns if `a` has bytecode of non-zero length.
function _hasCode(address a) private view returns (bool result) {
/// @solidity memory-safe-assembly
assembly {
result := extcodesize(a) // Can handle dirty upper bits.
}
}
/// @dev Returns the calldata value at `offset`.
function _calldataload(uint256 offset) private pure returns (uint256 value) {
/// @solidity memory-safe-assembly
assembly {
value := calldataload(offset)
}
}
/// @dev Executes a return opcode to return `x` and end the current call frame.
function _return(uint256 x) private pure {
/// @solidity memory-safe-assembly
assembly {
mstore(0x00, x)
return(0x00, 0x20)
}
}
}// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
interface ITokenURI {
/// @dev Returns the Uniform Resource Identifier (URI) for token `id`.
function tokenURI(uint256 id) external view returns (string memory);
}{
"remappings": [
"dn404/=lib/dn404/",
"ds-test/=lib/forge-std/lib/ds-test/src/",
"forge-std/=lib/forge-std/src/",
"solady/=lib/solady/src/",
"murky/=lib/dn404/lib/murky/",
"openzeppelin-contracts/=lib/dn404/lib/murky/lib/openzeppelin-contracts/"
],
"optimizer": {
"enabled": true,
"runs": 200
},
"metadata": {
"useLiteralContent": false,
"bytecodeHash": "ipfs",
"appendCBOR": true
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "paris",
"libraries": {}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"contract ITokenURI","name":"metadata_","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":"MetadataLocked","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":[{"internalType":"address","name":"mirror","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"metadata","outputs":[{"internalType":"contract ITokenURI","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"metadataLocked","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":"pure","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":"contract ITokenURI","name":"metadata_","type":"address"}],"name":"setMetadata","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"setMetadataLocked","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":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"id","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","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"},{"stateMutability":"payable","type":"receive"}]Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000018570d2f9e33d4c7de8aa289efe3b7f85d6be0b8
-----Decoded View---------------
Arg [0] : metadata_ (address): 0x18570D2f9E33d4C7de8aA289EfE3B7F85D6Be0B8
-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000018570d2f9e33d4c7de8aa289efe3b7f85d6be0b8
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