Token Reliquary Deposit
Overview ERC-721
Total Supply:
2,504 RELIC
Holders:
2,019 addresses
Transfers:
-
Contract:
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Contract Source Code Verified (Exact Match)
Contract Name:
Reliquary
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.15;
import "./ReliquaryEvents.sol";
import "./interfaces/IReliquary.sol";
import "./interfaces/IEmissionCurve.sol";
import "./interfaces/IRewarder.sol";
import "./interfaces/INFTDescriptor.sol";
import "openzeppelin-contracts/contracts/token/ERC20/utils/SafeERC20.sol";
import "openzeppelin-contracts/contracts/token/ERC721/extensions/ERC721Burnable.sol";
import "openzeppelin-contracts/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "openzeppelin-contracts/contracts/utils/Multicall.sol";
import "openzeppelin-contracts/contracts/access/AccessControlEnumerable.sol";
import "openzeppelin-contracts/contracts/security/ReentrancyGuard.sol";
/**
* @title Reliquary
* @author Justin Bebis, Zokunei & the Byte Masons team
*
* @notice This system is designed to manage incentives for deposited assets such that
* behaviors can be programmed on a per-pool basis using maturity levels. Stake in a
* pool, also referred to as "position," is represented by means of an NFT called a
* "Relic." Each position has a "maturity" which captures the age of the position.
*
* @notice Deposits are tracked by Relic ID instead of by user. This allows for
* increased composability without affecting accounting logic too much, and users can
* trade their Relics without withdrawing liquidity or affecting the position's maturity.
*/
contract Reliquary is
IReliquary,
ERC721Burnable,
ERC721Enumerable,
AccessControlEnumerable,
Multicall,
ReentrancyGuard
{
using SafeERC20 for IERC20;
/// @dev Access control roles.
bytes32 private constant OPERATOR = keccak256("OPERATOR");
bytes32 private constant EMISSION_CURVE = keccak256("EMISSION_CURVE");
/// @dev Indicates whether tokens are being added to, or removed from, a pool.
enum Kind {
DEPOSIT,
WITHDRAW,
OTHER
}
/// @dev Level of precision rewards are calculated to.
uint private constant ACC_REWARD_PRECISION = 1e12;
/// @dev Nonce to use for new relicId.
uint private idNonce;
/// @notice Address of the reward token contract.
address public immutable rewardToken;
/// @notice Address of each NFTDescriptor contract.
address[] public nftDescriptor;
/// @notice Address of EmissionCurve contract.
address public emissionCurve;
/// @notice Info of each Reliquary pool.
PoolInfo[] private poolInfo;
/// @notice Level system for each Reliquary pool.
LevelInfo[] private levels;
/// @notice Address of the LP token for each Reliquary pool.
address[] public poolToken;
/// @notice Address of IRewarder contract for each Reliquary pool.
address[] public rewarder;
/// @notice Info of each staked position.
mapping(uint => PositionInfo) internal positionForId;
/// @dev Total allocation points. Must be the sum of all allocation points in all pools.
uint public totalAllocPoint;
error NonExistentRelic();
error BurningPrincipal();
error BurningRewards();
error RewardTokenAsPoolToken();
error EmptyArray();
error ArrayLengthMismatch();
error NonZeroFirstMaturity();
error UnsortedMaturityLevels();
error ZeroTotalAllocPoint();
error NonExistentPool();
error ZeroAmount();
error NotOwner();
error DuplicateRelicIds();
error RelicsNotOfSamePool();
error MergingEmptyRelics();
error MaxEmissionRateExceeded();
error NotApprovedOrOwner();
/**
* @dev Constructs and initializes the contract.
* @param _rewardToken The reward token contract address.
* @param _emissionCurve The contract address for the EmissionCurve, which will return the emission rate.
*/
constructor(address _rewardToken, address _emissionCurve) ERC721("Reliquary Deposit", "RELIC") {
rewardToken = _rewardToken;
emissionCurve = _emissionCurve;
_grantRole(DEFAULT_ADMIN_ROLE, msg.sender);
}
/// @notice Sets a new EmissionCurve for overall rewardToken emissions. Can only be called with the proper role.
/// @param _emissionCurve The contract address for the EmissionCurve, which will return the base emission rate.
function setEmissionCurve(address _emissionCurve) external override onlyRole(EMISSION_CURVE) {
emissionCurve = _emissionCurve;
emit ReliquaryEvents.LogSetEmissionCurve(_emissionCurve);
}
/**
* @notice Add a new pool for the specified LP. Can only be called by an operator.
* @param allocPoint The allocation points for the new pool.
* @param _poolToken Address of the pooled ERC-20 token.
* @param _rewarder Address of the rewarder delegate.
* @param requiredMaturities Array of maturity (in seconds) required to achieve each level for this pool.
* @param levelMultipliers The multipliers applied to the amount of `_poolToken` for each level within this pool.
* @param name Name of pool to be displayed in NFT image.
* @param _nftDescriptor The contract address for NFTDescriptor, which will return the token URI.
*/
function addPool(
uint allocPoint,
address _poolToken,
address _rewarder,
uint[] calldata requiredMaturities,
uint[] calldata levelMultipliers,
string memory name,
address _nftDescriptor
) external override onlyRole(OPERATOR) {
if (_poolToken == rewardToken) revert RewardTokenAsPoolToken();
if (requiredMaturities.length == 0) revert EmptyArray();
if (requiredMaturities.length != levelMultipliers.length) revert ArrayLengthMismatch();
if (requiredMaturities[0] != 0) revert NonZeroFirstMaturity();
if (requiredMaturities.length > 1) {
uint highestMaturity;
for (uint i = 1; i < requiredMaturities.length;) {
if (requiredMaturities[i] <= highestMaturity) revert UnsortedMaturityLevels();
highestMaturity = requiredMaturities[i];
unchecked {
++i;
}
}
}
uint length = poolLength();
for (uint i; i < length;) {
_updatePool(i);
unchecked {
++i;
}
}
uint totalAlloc = totalAllocPoint + allocPoint;
if (totalAlloc == 0) revert ZeroTotalAllocPoint();
totalAllocPoint = totalAlloc;
poolToken.push(_poolToken);
rewarder.push(_rewarder);
nftDescriptor.push(_nftDescriptor);
poolInfo.push(
PoolInfo({allocPoint: allocPoint, lastRewardTime: block.timestamp, accRewardPerShare: 0, name: name})
);
levels.push(
LevelInfo({
requiredMaturities: requiredMaturities,
multipliers: levelMultipliers,
balance: new uint[](levelMultipliers.length)
})
);
emit ReliquaryEvents.LogPoolAddition((poolToken.length - 1), allocPoint, _poolToken, _rewarder, _nftDescriptor);
}
/**
* @notice Modify the given pool's properties. Can only be called by an operator.
* @param pid The index of the pool. See poolInfo.
* @param allocPoint New AP of the pool.
* @param _rewarder Address of the rewarder delegate.
* @param name Name of pool to be displayed in NFT image.
* @param _nftDescriptor The contract address for NFTDescriptor, which will return the token URI.
* @param overwriteRewarder True if _rewarder should be set. Otherwise _rewarder is ignored.
*/
function modifyPool(
uint pid,
uint allocPoint,
address _rewarder,
string calldata name,
address _nftDescriptor,
bool overwriteRewarder
) external override onlyRole(OPERATOR) {
if (pid >= poolInfo.length) revert NonExistentPool();
uint length = poolLength();
for (uint i; i < length;) {
_updatePool(i);
unchecked {
++i;
}
}
PoolInfo storage pool = poolInfo[pid];
uint totalAlloc = totalAllocPoint + allocPoint - pool.allocPoint;
if (totalAlloc == 0) revert ZeroTotalAllocPoint();
totalAllocPoint = totalAlloc;
pool.allocPoint = allocPoint;
if (overwriteRewarder) {
rewarder[pid] = _rewarder;
}
pool.name = name;
nftDescriptor[pid] = _nftDescriptor;
emit ReliquaryEvents.LogPoolModified(
pid, allocPoint, overwriteRewarder ? _rewarder : rewarder[pid], _nftDescriptor
);
}
/// @notice Update reward variables for all pools. Be careful of gas spending!
/// @param pids Pool IDs of all to be updated. Make sure to update all active pools.
function massUpdatePools(uint[] calldata pids) external override nonReentrant {
for (uint i; i < pids.length;) {
_updatePool(pids[i]);
unchecked {
++i;
}
}
}
/// @notice Update reward variables of the given pool.
/// @param pid The index of the pool. See poolInfo.
function updatePool(uint pid) external override nonReentrant {
_updatePool(pid);
}
/**
* @notice Deposit pool tokens to Reliquary for reward token allocation.
* @param amount Token amount to deposit.
* @param relicId NFT ID of the position being deposited to.
*/
function deposit(uint amount, uint relicId) external override nonReentrant {
_requireApprovedOrOwner(relicId);
_deposit(amount, relicId);
}
/**
* @notice Withdraw pool tokens.
* @param amount token amount to withdraw.
* @param relicId NFT ID of the position being withdrawn.
*/
function withdraw(uint amount, uint relicId) external override nonReentrant {
if (amount == 0) revert ZeroAmount();
_requireApprovedOrOwner(relicId);
(uint poolId,) = _updatePosition(amount, relicId, Kind.WITHDRAW, address(0));
IERC20(poolToken[poolId]).safeTransfer(msg.sender, amount);
emit ReliquaryEvents.Withdraw(poolId, amount, msg.sender, relicId);
}
/**
* @notice Harvest proceeds for transaction sender to owner of Relic `relicId`.
* @param relicId NFT ID of the position being harvested.
* @param harvestTo Address to send rewards to (zero address if harvest should not be performed).
*/
function harvest(uint relicId, address harvestTo) external override nonReentrant {
_requireApprovedOrOwner(relicId);
(uint poolId, uint _pendingReward) = _updatePosition(0, relicId, Kind.OTHER, harvestTo);
emit ReliquaryEvents.Harvest(poolId, _pendingReward, harvestTo, relicId);
}
/**
* @notice Withdraw pool tokens and harvest proceeds for transaction sender to owner of Relic `relicId`.
* @param amount token amount to withdraw.
* @param relicId NFT ID of the position being withdrawn and harvested.
* @param harvestTo Address to send rewards to (zero address if harvest should not be performed).
*/
function withdrawAndHarvest(uint amount, uint relicId, address harvestTo) external override nonReentrant {
if (amount == 0) revert ZeroAmount();
_requireApprovedOrOwner(relicId);
(uint poolId, uint _pendingReward) = _updatePosition(amount, relicId, Kind.WITHDRAW, harvestTo);
IERC20(poolToken[poolId]).safeTransfer(msg.sender, amount);
emit ReliquaryEvents.Withdraw(poolId, amount, msg.sender, relicId);
emit ReliquaryEvents.Harvest(poolId, _pendingReward, harvestTo, relicId);
}
/**
* @notice Withdraw without caring about rewards. EMERGENCY ONLY.
* @param relicId NFT ID of the position to emergency withdraw from and burn.
*/
function emergencyWithdraw(uint relicId) external override nonReentrant {
address to = ownerOf(relicId);
if (to != msg.sender) revert NotOwner();
PositionInfo storage position = positionForId[relicId];
uint amount = position.amount;
uint poolId = position.poolId;
levels[poolId].balance[position.level] -= amount;
_burn(relicId);
delete positionForId[relicId];
IERC20(poolToken[poolId]).safeTransfer(to, amount);
emit ReliquaryEvents.EmergencyWithdraw(poolId, amount, to, relicId);
}
/// @notice Update position without performing a deposit/withdraw/harvest.
/// @param relicId The NFT ID of the position being updated.
function updatePosition(uint relicId) external override nonReentrant {
if (!_exists(relicId)) revert NonExistentRelic();
_updatePosition(0, relicId, Kind.OTHER, address(0));
}
/// @notice Returns a PositionInfo object for the given relicId.
function getPositionForId(uint relicId) external view override returns (PositionInfo memory position) {
position = positionForId[relicId];
}
/// @notice Returns a PoolInfo object for pool ID `pid`.
function getPoolInfo(uint pid) external view override returns (PoolInfo memory pool) {
pool = poolInfo[pid];
}
/// @notice Returns a LevelInfo object for pool ID `pid`.
function getLevelInfo(uint pid) external view override returns (LevelInfo memory levelInfo) {
levelInfo = levels[pid];
}
/**
* @notice View function to retrieve the relicIds, poolIds, and pendingReward for each Relic owned by an address.
* @param owner Address of the owner to retrieve info for.
* @return pendingRewards Array of PendingReward objects.
*/
function pendingRewardsOfOwner(address owner)
external
view
override
returns (PendingReward[] memory pendingRewards)
{
uint balance = balanceOf(owner);
pendingRewards = new PendingReward[](balance);
for (uint i; i < balance;) {
uint relicId = tokenOfOwnerByIndex(owner, i);
pendingRewards[i] = PendingReward({
relicId: relicId,
poolId: positionForId[relicId].poolId,
pendingReward: pendingReward(relicId)
});
unchecked {
++i;
}
}
}
/**
* @notice View function to retrieve owned positions for an address.
* @param owner Address of the owner to retrieve info for.
* @return relicIds Each relicId owned by the given address.
* @return positionInfos The PositionInfo object for each relicId.
*/
function relicPositionsOfOwner(address owner)
external
view
override
returns (uint[] memory relicIds, PositionInfo[] memory positionInfos)
{
uint balance = balanceOf(owner);
relicIds = new uint[](balance);
positionInfos = new PositionInfo[](balance);
for (uint i; i < balance;) {
relicIds[i] = tokenOfOwnerByIndex(owner, i);
positionInfos[i] = positionForId[relicIds[i]];
unchecked {
++i;
}
}
}
/// @notice Returns whether `spender` is allowed to manage Relic `relicId`.
function isApprovedOrOwner(address spender, uint relicId) external view override returns (bool) {
return _isApprovedOrOwner(spender, relicId);
}
/**
* @notice Create a new Relic NFT and deposit into this position.
* @param to Address to mint the Relic to.
* @param pid The index of the pool. See poolInfo.
* @param amount Token amount to deposit.
*/
function createRelicAndDeposit(address to, uint pid, uint amount)
public
virtual
override
nonReentrant
returns (uint id)
{
if (pid >= poolInfo.length) revert NonExistentPool();
id = _mint(to);
PositionInfo storage position = positionForId[id];
position.poolId = pid;
_deposit(amount, id);
emit ReliquaryEvents.CreateRelic(pid, to, id);
}
/**
* @notice Split an owned Relic into a new one, while maintaining maturity.
* @param fromId The NFT ID of the Relic to split from.
* @param amount Amount to move from existing Relic into the new one.
* @param to Address to mint the Relic to.
* @return newId The NFT ID of the new Relic.
*/
function split(uint fromId, uint amount, address to) public virtual override nonReentrant returns (uint newId) {
if (amount == 0) revert ZeroAmount();
_requireApprovedOrOwner(fromId);
PositionInfo storage fromPosition = positionForId[fromId];
uint fromAmount = fromPosition.amount;
uint newFromAmount = fromAmount - amount;
fromPosition.amount = newFromAmount;
newId = _mint(to);
PositionInfo storage newPosition = positionForId[newId];
newPosition.amount = amount;
newPosition.entry = fromPosition.entry;
uint level = fromPosition.level;
newPosition.level = level;
uint poolId = fromPosition.poolId;
newPosition.poolId = poolId;
uint multiplier = _updatePool(poolId) * levels[poolId].multipliers[level];
uint pendingFrom = fromAmount * multiplier / ACC_REWARD_PRECISION - fromPosition.rewardDebt;
if (pendingFrom != 0) {
fromPosition.rewardCredit += pendingFrom;
}
fromPosition.rewardDebt = newFromAmount * multiplier / ACC_REWARD_PRECISION;
newPosition.rewardDebt = amount * multiplier / ACC_REWARD_PRECISION;
emit ReliquaryEvents.CreateRelic(poolId, to, newId);
emit ReliquaryEvents.Split(fromId, newId, amount);
}
/**
* @notice Transfer amount from one Relic into another, updating maturity in the receiving Relic.
* @param fromId The NFT ID of the Relic to transfer from.
* @param toId The NFT ID of the Relic being transferred to.
* @param amount The amount being transferred.
*/
function shift(uint fromId, uint toId, uint amount) public virtual override nonReentrant {
if (amount == 0) revert ZeroAmount();
if (fromId == toId) revert DuplicateRelicIds();
_requireApprovedOrOwner(fromId);
_requireApprovedOrOwner(toId);
PositionInfo storage fromPosition = positionForId[fromId];
uint fromAmount = fromPosition.amount;
uint poolId = fromPosition.poolId;
PositionInfo storage toPosition = positionForId[toId];
if (poolId != toPosition.poolId) revert RelicsNotOfSamePool();
uint toAmount = toPosition.amount;
toPosition.entry = (fromAmount * fromPosition.entry + toAmount * toPosition.entry) / (fromAmount + toAmount);
uint newFromAmount = fromAmount - amount;
fromPosition.amount = newFromAmount;
uint newToAmount = toAmount + amount;
toPosition.amount = newToAmount;
(uint fromLevel, uint oldToLevel, uint newToLevel) =
_shiftLevelBalances(fromId, toId, poolId, amount, toAmount, newToAmount);
uint accRewardPerShare = _updatePool(poolId);
uint fromMultiplier = accRewardPerShare * levels[poolId].multipliers[fromLevel];
uint pendingFrom = fromAmount * fromMultiplier / ACC_REWARD_PRECISION - fromPosition.rewardDebt;
if (pendingFrom != 0) {
fromPosition.rewardCredit += pendingFrom;
}
uint pendingTo = toAmount * levels[poolId].multipliers[oldToLevel] * accRewardPerShare / ACC_REWARD_PRECISION
- toPosition.rewardDebt;
if (pendingTo != 0) {
toPosition.rewardCredit += pendingTo;
}
fromPosition.rewardDebt = newFromAmount * fromMultiplier / ACC_REWARD_PRECISION;
toPosition.rewardDebt =
newToAmount * accRewardPerShare * levels[poolId].multipliers[newToLevel] / ACC_REWARD_PRECISION;
emit ReliquaryEvents.Shift(fromId, toId, amount);
}
/**
* @notice Transfer entire position (including rewards) from one Relic into another, burning it
* and updating maturity in the receiving Relic.
* @param fromId The NFT ID of the Relic to transfer from.
* @param toId The NFT ID of the Relic being transferred to.
*/
function merge(uint fromId, uint toId) public virtual override nonReentrant {
if (fromId == toId) revert DuplicateRelicIds();
_requireApprovedOrOwner(fromId);
_requireApprovedOrOwner(toId);
PositionInfo storage fromPosition = positionForId[fromId];
uint fromAmount = fromPosition.amount;
uint poolId = fromPosition.poolId;
PositionInfo storage toPosition = positionForId[toId];
if (poolId != toPosition.poolId) revert RelicsNotOfSamePool();
uint toAmount = toPosition.amount;
uint newToAmount = toAmount + fromAmount;
if (newToAmount == 0) revert MergingEmptyRelics();
toPosition.entry = (fromAmount * fromPosition.entry + toAmount * toPosition.entry) / newToAmount;
toPosition.amount = newToAmount;
(uint fromLevel, uint oldToLevel, uint newToLevel) =
_shiftLevelBalances(fromId, toId, poolId, fromAmount, toAmount, newToAmount);
uint accRewardPerShare = _updatePool(poolId);
uint pendingTo = accRewardPerShare
* (fromAmount * levels[poolId].multipliers[fromLevel] + toAmount * levels[poolId].multipliers[oldToLevel])
/ ACC_REWARD_PRECISION + fromPosition.rewardCredit - fromPosition.rewardDebt - toPosition.rewardDebt;
if (pendingTo != 0) {
toPosition.rewardCredit += pendingTo;
}
toPosition.rewardDebt =
newToAmount * accRewardPerShare * levels[poolId].multipliers[newToLevel] / ACC_REWARD_PRECISION;
_burn(fromId);
delete positionForId[fromId];
emit ReliquaryEvents.Merge(fromId, toId, fromAmount);
}
/// @notice Burns the Relic with ID `tokenId`. Cannot be called if there is any principal or rewards in the Relic.
function burn(uint tokenId) public virtual override (IReliquary, ERC721Burnable) {
if (positionForId[tokenId].amount != 0) revert BurningPrincipal();
if (pendingReward(tokenId) != 0) revert BurningRewards();
super.burn(tokenId);
}
/**
* @notice View function to see pending reward tokens on frontend.
* @param relicId ID of the position.
* @return pending reward amount for a given position owner.
*/
function pendingReward(uint relicId) public view override returns (uint pending) {
PositionInfo storage position = positionForId[relicId];
uint poolId = position.poolId;
PoolInfo storage pool = poolInfo[poolId];
uint accRewardPerShare = pool.accRewardPerShare;
uint lpSupply = _poolBalance(position.poolId);
uint lastRewardTime = pool.lastRewardTime;
uint secondsSinceReward = block.timestamp - lastRewardTime;
if (secondsSinceReward != 0 && lpSupply != 0) {
uint reward =
secondsSinceReward * _baseEmissionsPerSecond(lastRewardTime) * pool.allocPoint / totalAllocPoint;
accRewardPerShare += reward * ACC_REWARD_PRECISION / lpSupply;
}
uint leveledAmount = position.amount * levels[poolId].multipliers[position.level];
pending = leveledAmount * accRewardPerShare / ACC_REWARD_PRECISION + position.rewardCredit - position.rewardDebt;
}
/**
* @notice View function to see level of position if it were to be updated.
* @param relicId ID of the position.
* @return level Level for given position upon update.
*/
function levelOnUpdate(uint relicId) public view override returns (uint level) {
PositionInfo storage position = positionForId[relicId];
LevelInfo storage levelInfo = levels[position.poolId];
uint length = levelInfo.requiredMaturities.length;
if (length == 1) {
return 0;
}
uint maturity = block.timestamp - position.entry;
for (level = length - 1; true;) {
if (maturity >= levelInfo.requiredMaturities[level]) {
break;
}
unchecked {
--level;
}
}
}
/// @notice Returns the number of Reliquary pools.
function poolLength() public view override returns (uint pools) {
pools = poolInfo.length;
}
/**
* @notice Returns the ERC721 tokenURI given by the pool's NFTDescriptor.
* @dev Can be gas expensive if used in a transaction and the NFTDescriptor is complex.
* @param tokenId The NFT ID of the Relic to get the tokenURI for.
*/
function tokenURI(uint tokenId) public view override (ERC721) returns (string memory) {
if (!_exists(tokenId)) revert NonExistentRelic();
return INFTDescriptor(nftDescriptor[positionForId[tokenId].poolId]).constructTokenURI(tokenId);
}
/// @dev Implement ERC165 to return which interfaces this contract conforms to
function supportsInterface(bytes4 interfaceId)
public
view
virtual
override (IERC165, AccessControlEnumerable, ERC721, ERC721Enumerable)
returns (bool)
{
return interfaceId == type(IReliquary).interfaceId || super.supportsInterface(interfaceId);
}
/// @dev Internal _updatePool function without nonReentrant modifier.
function _updatePool(uint pid) internal returns (uint accRewardPerShare) {
if (pid >= poolLength()) revert NonExistentPool();
PoolInfo storage pool = poolInfo[pid];
uint timestamp = block.timestamp;
uint lastRewardTime = pool.lastRewardTime;
uint secondsSinceReward = timestamp - lastRewardTime;
accRewardPerShare = pool.accRewardPerShare;
if (secondsSinceReward != 0) {
uint lpSupply = _poolBalance(pid);
if (lpSupply != 0) {
uint reward =
secondsSinceReward * _baseEmissionsPerSecond(lastRewardTime) * pool.allocPoint / totalAllocPoint;
accRewardPerShare += reward * ACC_REWARD_PRECISION / lpSupply;
pool.accRewardPerShare = accRewardPerShare;
}
pool.lastRewardTime = timestamp;
emit ReliquaryEvents.LogUpdatePool(pid, timestamp, lpSupply, accRewardPerShare);
}
}
/// @dev Internal deposit function that assumes relicId is valid.
function _deposit(uint amount, uint relicId) internal {
if (amount == 0) revert ZeroAmount();
(uint poolId,) = _updatePosition(amount, relicId, Kind.DEPOSIT, address(0));
IERC20(poolToken[poolId]).safeTransferFrom(msg.sender, address(this), amount);
emit ReliquaryEvents.Deposit(poolId, amount, ownerOf(relicId), relicId);
}
/**
* @dev Internal function called whenever a position's state needs to be modified.
* @param amount Amount of poolToken to deposit/withdraw.
* @param relicId The NFT ID of the position being updated.
* @param kind Indicates whether tokens are being added to, or removed from, a pool.
* @param harvestTo Address to send rewards to (zero address if harvest should not be performed).
* @return poolId Pool ID of the given position.
* @return _pendingReward Pending reward for given position owner.
*/
function _updatePosition(uint amount, uint relicId, Kind kind, address harvestTo)
internal
returns (uint poolId, uint _pendingReward)
{
PositionInfo storage position = positionForId[relicId];
poolId = position.poolId;
uint accRewardPerShare = _updatePool(poolId);
uint oldAmount = position.amount;
uint newAmount;
if (kind == Kind.DEPOSIT) {
_updateEntry(amount, relicId);
newAmount = oldAmount + amount;
position.amount = newAmount;
} else if (kind == Kind.WITHDRAW) {
newAmount = oldAmount - amount;
position.amount = newAmount;
} else {
newAmount = oldAmount;
}
uint oldLevel = position.level;
uint newLevel = _updateLevel(relicId);
if (oldLevel != newLevel) {
levels[poolId].balance[oldLevel] -= oldAmount;
levels[poolId].balance[newLevel] += newAmount;
} else if (kind == Kind.DEPOSIT) {
levels[poolId].balance[oldLevel] += amount;
} else if (kind == Kind.WITHDRAW) {
levels[poolId].balance[oldLevel] -= amount;
}
_pendingReward = oldAmount * levels[poolId].multipliers[oldLevel] * accRewardPerShare / ACC_REWARD_PRECISION
- position.rewardDebt;
position.rewardDebt =
newAmount * levels[poolId].multipliers[newLevel] * accRewardPerShare / ACC_REWARD_PRECISION;
bool _harvest = harvestTo != address(0);
if (!_harvest && _pendingReward != 0) {
position.rewardCredit += _pendingReward;
} else if (_harvest) {
uint total = _pendingReward + position.rewardCredit;
uint received = _receivedReward(total);
position.rewardCredit = total - received;
if (received != 0) {
IERC20(rewardToken).safeTransfer(harvestTo, received);
address _rewarder = rewarder[poolId];
if (_rewarder != address(0)) {
IRewarder(_rewarder).onReward(relicId, received, harvestTo);
}
}
}
if (kind == Kind.DEPOSIT) {
address _rewarder = rewarder[poolId];
if (_rewarder != address(0)) {
IRewarder(_rewarder).onDeposit(relicId, amount);
}
} else if (kind == Kind.WITHDRAW) {
address _rewarder = rewarder[poolId];
if (_rewarder != address(0)) {
IRewarder(_rewarder).onWithdraw(relicId, amount);
}
}
}
/**
* @notice Updates the user's entry time based on the weight of their deposit or withdrawal.
* @param amount The amount of the deposit / withdrawal.
* @param relicId The NFT ID of the position being updated.
*/
function _updateEntry(uint amount, uint relicId) internal {
PositionInfo storage position = positionForId[relicId];
uint weight = _findWeight(amount, position.amount);
uint maturity = block.timestamp - position.entry;
position.entry += maturity * weight / 1e18;
}
/**
* @notice Updates the position's level based on entry time.
* @param relicId The NFT ID of the position being updated.
* @return newLevel Level of position after update.
*/
function _updateLevel(uint relicId) internal returns (uint newLevel) {
newLevel = levelOnUpdate(relicId);
PositionInfo storage position = positionForId[relicId];
if (position.level != newLevel) {
position.level = newLevel;
emit ReliquaryEvents.LevelChanged(relicId, newLevel);
}
}
/// @dev Ensure the behavior of ERC721Enumerable _beforeTokenTransfer is preserved.
function _beforeTokenTransfer(address from, address to, uint tokenId)
internal
override (ERC721, ERC721Enumerable)
{
ERC721Enumerable._beforeTokenTransfer(from, to, tokenId);
}
/**
* @notice Calculate how much the owner will actually receive on harvest, given available reward tokens.
* @param _pendingReward Amount of reward token owed.
* @return received The minimum between amount owed and amount available.
*/
function _receivedReward(uint _pendingReward) internal view returns (uint received) {
uint available = IERC20(rewardToken).balanceOf(address(this));
received = (available > _pendingReward) ? _pendingReward : available;
}
/// @notice Gets the base emission rate from external, upgradable contract.
function _baseEmissionsPerSecond(uint lastRewardTime) internal view returns (uint rate) {
rate = IEmissionCurve(emissionCurve).getRate(lastRewardTime);
if (rate > 6e18) revert MaxEmissionRateExceeded();
}
/**
* @notice returns The total deposits of the pool's token, weighted by maturity level allocation.
* @param pid The index of the pool. See poolInfo.
* @return total The amount of pool tokens held by the contract.
*/
function _poolBalance(uint pid) internal view returns (uint total) {
LevelInfo storage levelInfo = levels[pid];
uint length = levelInfo.balance.length;
for (uint i; i < length;) {
total += levelInfo.balance[i] * levelInfo.multipliers[i];
unchecked {
++i;
}
}
}
/// @notice Require the sender is either the owner of the Relic or approved to transfer it.
/// @param relicId The NFT ID of the Relic.
function _requireApprovedOrOwner(uint relicId) internal view {
if (!_isApprovedOrOwner(msg.sender, relicId)) revert NotApprovedOrOwner();
}
/**
* @notice Utility function to find weights without any underflows or zero division problems.
* @param addedValue New value being added.
* @param oldValue Current amount of x.
*/
function _findWeight(uint addedValue, uint oldValue) internal pure returns (uint weightNew) {
if (oldValue == 0) {
weightNew = 1e18;
} else {
if (oldValue < addedValue) {
uint weightOld = oldValue * 1e18 / (addedValue + oldValue);
weightNew = 1e18 - weightOld;
} else if (addedValue < oldValue) {
weightNew = addedValue * 1e18 / (addedValue + oldValue);
} else {
weightNew = 1e18 / 2;
}
}
}
/// @dev Handle updating balances for each affected tranche when shifting and merging.
function _shiftLevelBalances(uint fromId, uint toId, uint poolId, uint amount, uint toAmount, uint newToAmount)
private
returns (uint fromLevel, uint oldToLevel, uint newToLevel)
{
fromLevel = positionForId[fromId].level;
oldToLevel = positionForId[toId].level;
newToLevel = _updateLevel(toId);
if (fromLevel != newToLevel) {
levels[poolId].balance[fromLevel] -= amount;
}
if (oldToLevel != newToLevel) {
levels[poolId].balance[oldToLevel] -= toAmount;
}
if (fromLevel != newToLevel && oldToLevel != newToLevel) {
levels[poolId].balance[newToLevel] += newToAmount;
} else if (fromLevel != newToLevel) {
levels[poolId].balance[newToLevel] += amount;
} else if (oldToLevel != newToLevel) {
levels[poolId].balance[newToLevel] += toAmount;
}
}
/// @dev Increments the ID nonce and mints a new Relic to `to`.
function _mint(address to) private returns (uint id) {
id = ++idNonce;
_safeMint(to, id);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
library ReliquaryEvents {
event CreateRelic(uint indexed pid, address indexed to, uint indexed relicId);
event Deposit(uint indexed pid, uint amount, address indexed to, uint indexed relicId);
event Withdraw(uint indexed pid, uint amount, address indexed to, uint indexed relicId);
event EmergencyWithdraw(uint indexed pid, uint amount, address indexed to, uint indexed relicId);
event Harvest(uint indexed pid, uint amount, address indexed to, uint indexed relicId);
event LogPoolAddition(
uint indexed pid, uint allocPoint, address indexed poolToken, address indexed rewarder, address nftDescriptor
);
event LogPoolModified(uint indexed pid, uint allocPoint, address indexed rewarder, address nftDescriptor);
event LogUpdatePool(uint indexed pid, uint lastRewardTime, uint lpSupply, uint accRewardPerShare);
event LogSetEmissionCurve(address indexed emissionCurveAddress);
event LevelChanged(uint indexed relicId, uint newLevel);
event Split(uint indexed fromId, uint indexed toId, uint amount);
event Shift(uint indexed fromId, uint indexed toId, uint amount);
event Merge(uint indexed fromId, uint indexed toId, uint amount);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.15;
import "openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Enumerable.sol";
/**
* @notice Info for each Reliquary position.
* `amount` LP token amount the position owner has provided.
* `rewardDebt` Amount of reward token accumalated before the position's entry or last harvest.
* `rewardCredit` Amount of reward token owed to the user on next harvest.
* `entry` Used to determine the maturity of the position.
* `poolId` ID of the pool to which this position belongs.
* `level` Index of this position's level within the pool's array of levels.
*/
struct PositionInfo {
uint amount;
uint rewardDebt;
uint rewardCredit;
uint entry; // position owner's relative entry into the pool.
uint poolId; // ensures that a single Relic is only used for one pool.
uint level;
}
/**
* @notice Info of each Reliquary pool.
* `accRewardPerShare` Accumulated reward tokens per share of pool (1 / 1e12).
* `lastRewardTime` Last timestamp the accumulated reward was updated.
* `allocPoint` Pool's individual allocation - ratio of the total allocation.
* `name` Name of pool to be displayed in NFT image.
*/
struct PoolInfo {
uint accRewardPerShare;
uint lastRewardTime;
uint allocPoint;
string name;
}
/**
* @notice Info for each level in a pool that determines how maturity is rewarded.
* `requiredMaturities` The minimum maturity (in seconds) required to reach each Level.
* `multipliers` Multiplier for each level applied to amount of incentivized token when calculating rewards in the pool.
* This is applied to both the numerator and denominator in the calculation such that the size of a user's position
* is effectively considered to be the actual number of tokens times the multiplier for their level.
* Also note that these multipliers do not affect the overall emission rate.
* `balance` Total (actual) number of tokens deposited in positions at each level.
*/
struct LevelInfo {
uint[] requiredMaturities;
uint[] multipliers;
uint[] balance;
}
/**
* @notice Object representing pending rewards and related data for a position.
* `relicId` The NFT ID of the given position.
* `poolId` ID of the pool to which this position belongs.
* `pendingReward` pending reward amount for a given position.
*/
struct PendingReward {
uint relicId;
uint poolId;
uint pendingReward;
}
interface IReliquary is IERC721Enumerable {
function setEmissionCurve(address _emissionCurve) external;
function addPool(
uint allocPoint,
address _poolToken,
address _rewarder,
uint[] calldata requiredMaturity,
uint[] calldata allocPoints,
string memory name,
address _nftDescriptor
) external;
function modifyPool(
uint pid,
uint allocPoint,
address _rewarder,
string calldata name,
address _nftDescriptor,
bool overwriteRewarder
) external;
function massUpdatePools(uint[] calldata pids) external;
function updatePool(uint pid) external;
function deposit(uint amount, uint relicId) external;
function withdraw(uint amount, uint relicId) external;
function harvest(uint relicId, address harvestTo) external;
function withdrawAndHarvest(uint amount, uint relicId, address harvestTo) external;
function emergencyWithdraw(uint relicId) external;
function updatePosition(uint relicId) external;
function getPositionForId(uint) external view returns (PositionInfo memory);
function getPoolInfo(uint) external view returns (PoolInfo memory);
function getLevelInfo(uint) external view returns (LevelInfo memory);
function pendingRewardsOfOwner(address owner) external view returns (PendingReward[] memory pendingRewards);
function relicPositionsOfOwner(address owner)
external
view
returns (uint[] memory relicIds, PositionInfo[] memory positionInfos);
function isApprovedOrOwner(address, uint) external view returns (bool);
function createRelicAndDeposit(address to, uint pid, uint amount) external returns (uint id);
function split(uint relicId, uint amount, address to) external returns (uint newId);
function shift(uint fromId, uint toId, uint amount) external;
function merge(uint fromId, uint toId) external;
function burn(uint tokenId) external;
function pendingReward(uint relicId) external view returns (uint pending);
function levelOnUpdate(uint relicId) external view returns (uint level);
function poolLength() external view returns (uint);
function rewardToken() external view returns (address);
function nftDescriptor(uint) external view returns (address);
function emissionCurve() external view returns (address);
function poolToken(uint) external view returns (address);
function rewarder(uint) external view returns (address);
function totalAllocPoint() external view returns (uint);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.15;
interface IEmissionCurve {
function getRate(uint lastRewardTime) external view returns (uint rate);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.15;
interface IRewarder {
function onReward(uint relicId, uint rewardAmount, address to) external;
function onDeposit(uint relicId, uint depositAmount) external;
function onWithdraw(uint relicId, uint withdrawalAmount) external;
function pendingTokens(uint relicId, uint rewardAmount) external view returns (address[] memory, uint[] memory);
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.15;
interface INFTDescriptor {
function constructTokenURI(uint relicId) external view returns (string memory);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
function safePermit(
IERC20Permit token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/extensions/ERC721Burnable.sol)
pragma solidity ^0.8.0;
import "../ERC721.sol";
import "../../../utils/Context.sol";
/**
* @title ERC721 Burnable Token
* @dev ERC721 Token that can be burned (destroyed).
*/
abstract contract ERC721Burnable is Context, ERC721 {
/**
* @dev Burns `tokenId`. See {ERC721-_burn}.
*
* Requirements:
*
* - The caller must own `tokenId` or be an approved operator.
*/
function burn(uint256 tokenId) public virtual {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
_burn(tokenId);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol)
pragma solidity ^0.8.0;
import "../ERC721.sol";
import "./IERC721Enumerable.sol";
/**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Multicall.sol)
pragma solidity ^0.8.0;
import "./Address.sol";
/**
* @dev Provides a function to batch together multiple calls in a single external call.
*
* _Available since v4.1._
*/
abstract contract Multicall {
/**
* @dev Receives and executes a batch of function calls on this contract.
*/
function multicall(bytes[] calldata data) external virtual returns (bytes[] memory results) {
results = new bytes[](data.length);
for (uint256 i = 0; i < data.length; i++) {
results[i] = Address.functionDelegateCall(address(this), data[i]);
}
return results;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (access/AccessControlEnumerable.sol)
pragma solidity ^0.8.0;
import "./IAccessControlEnumerable.sol";
import "./AccessControl.sol";
import "../utils/structs/EnumerableSet.sol";
/**
* @dev Extension of {AccessControl} that allows enumerating the members of each role.
*/
abstract contract AccessControlEnumerable is IAccessControlEnumerable, AccessControl {
using EnumerableSet for EnumerableSet.AddressSet;
mapping(bytes32 => EnumerableSet.AddressSet) private _roleMembers;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IAccessControlEnumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Returns one of the accounts that have `role`. `index` must be a
* value between 0 and {getRoleMemberCount}, non-inclusive.
*
* Role bearers are not sorted in any particular way, and their ordering may
* change at any point.
*
* WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
* you perform all queries on the same block. See the following
* https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
* for more information.
*/
function getRoleMember(bytes32 role, uint256 index) public view virtual override returns (address) {
return _roleMembers[role].at(index);
}
/**
* @dev Returns the number of accounts that have `role`. Can be used
* together with {getRoleMember} to enumerate all bearers of a role.
*/
function getRoleMemberCount(bytes32 role) public view virtual override returns (uint256) {
return _roleMembers[role].length();
}
/**
* @dev Overload {_grantRole} to track enumerable memberships
*/
function _grantRole(bytes32 role, address account) internal virtual override {
super._grantRole(role, account);
_roleMembers[role].add(account);
}
/**
* @dev Overload {_revokeRole} to track enumerable memberships
*/
function _revokeRole(bytes32 role, address account) internal virtual override {
super._revokeRole(role, account);
_roleMembers[role].remove(account);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
_nonReentrantBefore();
_;
_nonReentrantAfter();
}
function _nonReentrantBefore() private {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
}
function _nonReentrantAfter() private {
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*/
interface IERC20Permit {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
/**
* @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: address zero is not a valid owner");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: invalid token ID");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
_requireMinted(tokenId);
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overridden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not token owner or approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
_requireMinted(tokenId);
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
_safeTransfer(from, to, tokenId, data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
_afterTokenTransfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
* This is an internal function that does not check if the sender is authorized to operate on the token.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
delete _tokenApprovals[tokenId];
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
_afterTokenTransfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
delete _tokenApprovals[tokenId];
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
_afterTokenTransfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits an {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits an {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Reverts if the `tokenId` has not been minted yet.
*/
function _requireMinted(uint256 tokenId) internal view virtual {
require(_exists(tokenId), "ERC721: invalid token ID");
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
/// @solidity memory-safe-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControlEnumerable.sol)
pragma solidity ^0.8.0;
import "./IAccessControl.sol";
/**
* @dev External interface of AccessControlEnumerable declared to support ERC165 detection.
*/
interface IAccessControlEnumerable is IAccessControl {
/**
* @dev Returns one of the accounts that have `role`. `index` must be a
* value between 0 and {getRoleMemberCount}, non-inclusive.
*
* Role bearers are not sorted in any particular way, and their ordering may
* change at any point.
*
* WARNING: When using {getRoleMember} and {getRoleMemberCount}, make sure
* you perform all queries on the same block. See the following
* https://forum.openzeppelin.com/t/iterating-over-elements-on-enumerableset-in-openzeppelin-contracts/2296[forum post]
* for more information.
*/
function getRoleMember(bytes32 role, uint256 index) external view returns (address);
/**
* @dev Returns the number of accounts that have `role`. Can be used
* together with {getRoleMember} to enumerate all bearers of a role.
*/
function getRoleMemberCount(bytes32 role) external view returns (uint256);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/AccessControl.sol)
pragma solidity ^0.8.0;
import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms. This is a lightweight version that doesn't allow enumerating role
* members except through off-chain means by accessing the contract event logs. Some
* applications may benefit from on-chain enumerability, for those cases see
* {AccessControlEnumerable}.
*
* Roles are referred to by their `bytes32` identifier. These should be exposed
* in the external API and be unique. The best way to achieve this is by
* using `public constant` hash digests:
*
* ```
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
* ```
*
* Roles can be used to represent a set of permissions. To restrict access to a
* function call, use {hasRole}:
*
* ```
* function foo() public {
* require(hasRole(MY_ROLE, msg.sender));
* ...
* }
* ```
*
* Roles can be granted and revoked dynamically via the {grantRole} and
* {revokeRole} functions. Each role has an associated admin role, and only
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
*
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
* that only accounts with this role will be able to grant or revoke other
* roles. More complex role relationships can be created by using
* {_setRoleAdmin}.
*
* WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
* grant and revoke this role. Extra precautions should be taken to secure
* accounts that have been granted it.
*/
abstract contract AccessControl is Context, IAccessControl, ERC165 {
struct RoleData {
mapping(address => bool) members;
bytes32 adminRole;
}
mapping(bytes32 => RoleData) private _roles;
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/**
* @dev Modifier that checks that an account has a specific role. Reverts
* with a standardized message including the required role.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*
* _Available since v4.1._
*/
modifier onlyRole(bytes32 role) {
_checkRole(role);
_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
return _roles[role].members[account];
}
/**
* @dev Revert with a standard message if `_msgSender()` is missing `role`.
* Overriding this function changes the behavior of the {onlyRole} modifier.
*
* Format of the revert message is described in {_checkRole}.
*
* _Available since v4.6._
*/
function _checkRole(bytes32 role) internal view virtual {
_checkRole(role, _msgSender());
}
/**
* @dev Revert with a standard message if `account` is missing `role`.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*/
function _checkRole(bytes32 role, address account) internal view virtual {
if (!hasRole(role, account)) {
revert(
string(
abi.encodePacked(
"AccessControl: account ",
Strings.toHexString(account),
" is missing role ",
Strings.toHexString(uint256(role), 32)
)
)
);
}
}
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
return _roles[role].adminRole;
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*
* May emit a {RoleGranted} event.
*/
function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
_grantRole(role, account);
}
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*
* May emit a {RoleRevoked} event.
*/
function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
_revokeRole(role, account);
}
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been revoked `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*
* May emit a {RoleRevoked} event.
*/
function renounceRole(bytes32 role, address account) public virtual override {
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
_revokeRole(role, account);
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event. Note that unlike {grantRole}, this function doesn't perform any
* checks on the calling account.
*
* May emit a {RoleGranted} event.
*
* [WARNING]
* ====
* This function should only be called from the constructor when setting
* up the initial roles for the system.
*
* Using this function in any other way is effectively circumventing the admin
* system imposed by {AccessControl}.
* ====
*
* NOTE: This function is deprecated in favor of {_grantRole}.
*/
function _setupRole(bytes32 role, address account) internal virtual {
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*
* Emits a {RoleAdminChanged} event.
*/
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
bytes32 previousAdminRole = getRoleAdmin(role);
_roles[role].adminRole = adminRole;
emit RoleAdminChanged(role, previousAdminRole, adminRole);
}
/**
* @dev Grants `role` to `account`.
*
* Internal function without access restriction.
*
* May emit a {RoleGranted} event.
*/
function _grantRole(bytes32 role, address account) internal virtual {
if (!hasRole(role, account)) {
_roles[role].members[account] = true;
emit RoleGranted(role, account, _msgSender());
}
}
/**
* @dev Revokes `role` from `account`.
*
* Internal function without access restriction.
*
* May emit a {RoleRevoked} event.
*/
function _revokeRole(bytes32 role, address account) internal virtual {
if (hasRole(role, account)) {
_roles[role].members[account] = false;
emit RoleRevoked(role, account, _msgSender());
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/structs/EnumerableSet.sol)
pragma solidity ^0.8.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*
* [WARNING]
* ====
* Trying to delete such a structure from storage will likely result in data corruption, rendering the structure unusable.
* See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.
*
* In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an array of EnumerableSet.
* ====
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping(bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) {
// Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
if (lastIndex != toDeleteIndex) {
bytes32 lastValue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastValue;
// Update the index for the moved value
set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex
}
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
return set._values[index];
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function _values(Set storage set) private view returns (bytes32[] memory) {
return set._values;
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
return _values(set._inner);
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(AddressSet storage set) internal view returns (address[] memory) {
bytes32[] memory store = _values(set._inner);
address[] memory result;
/// @solidity memory-safe-assembly
assembly {
result := store
}
return result;
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(UintSet storage set) internal view returns (uint256[] memory) {
bytes32[] memory store = _values(set._inner);
uint256[] memory result;
/// @solidity memory-safe-assembly
assembly {
result := store
}
return result;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
uint8 private constant _ADDRESS_LENGTH = 20;
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
*/
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)
pragma solidity ^0.8.0;
/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/
interface IAccessControl {
/**
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {AccessControl-_setupRole}.
*/
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) external view returns (bool);
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {AccessControl-_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) external view returns (bytes32);
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function grantRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function revokeRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) external;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}{
"remappings": [
"base64/=lib/base64/",
"cache_path /= 'forge-cache'/",
"ds-test/=lib/forge-std/lib/ds-test/src/",
"forge-std/=lib/forge-std/src/",
"libs /= ['lib']/",
"openzeppelin-contracts/=lib/openzeppelin-contracts/",
"out /= 'out'/",
"script /= 'scripts'/",
"src /= 'contracts'/",
"test /= 'test/foundry'/",
"v2-core/=lib/v2-core/contracts/"
],
"optimizer": {
"enabled": true,
"runs": 200
},
"metadata": {
"bytecodeHash": "ipfs"
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"evmVersion": "london",
"viaIR": true,
"libraries": {}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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bility":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"pid","type":"uint256"}],"name":"getLevelInfo","outputs":[{"components":[{"internalType":"uint256[]","name":"requiredMaturities","type":"uint256[]"},{"internalType":"uint256[]","name":"multipliers","type":"uint256[]"},{"internalType":"uint256[]","name":"balance","type":"uint256[]"}],"internalType":"struct LevelInfo","name":"levelInfo","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"pid","type":"uint256"}],"name":"getPoolInfo","outputs":[{"components":[{"internalType":"uint256","name":"accRewardPerShare","type":"uint256"},{"internalType":"uint256","name":"lastRewardTime","type":"uint256"},{"internalType":"uint256","name":"allocPoint","type":"uint256"},{"internalType":"string","name":"name","type":"string"}],"internalType":"struct PoolInfo","name":"pool","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"relicId","type":"uint256"}],"name":"getPositionForId","outputs":[{"components":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"rewardDebt","type":"uint256"},{"internalType":"uint256","name":"rewardCredit","type":"uint256"},{"internalType":"uint256","name":"entry","type":"uint256"},{"internalType":"uint256","name":"poolId","type":"uint256"},{"internalType":"uint256","name":"level","type":"uint256"}],"internalType":"struct PositionInfo","name":"position","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"getRoleMember","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleMemberCount","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"relicId","type":"uint256"},{"internalType":"address","name":"harvestTo","type":"address"}],"name":"harvest","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"relicId","type":"uint256"}],"name":"isApprovedOrOwner","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"relicId","type":"uint256"}],"name":"levelOnUpdate","outputs":[{"internalType":"uint256","name":"level","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"pids","type":"uint256[]"}],"name":"massUpdatePools","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"fromId","type":"uint256"},{"internalType":"uint256","name":"toId","type":"uint256"}],"name":"merge","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"pid","type":"uint256"},{"internalType":"uint256","name":"allocPoint","type":"uint256"},{"internalType":"address","name":"_rewarder","type":"address"},{"internalType":"string","name":"name","type":"string"},{"internalType":"address","name":"_nftDescriptor","type":"address"},{"internalType":"bool","name":"overwriteRewarder","type":"bool"}],"name":"modifyPool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes[]","name":"data","type":"bytes[]"}],"name":"multicall","outputs":[{"internalType":"bytes[]","name":"results","type":"bytes[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"nftDescriptor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"relicId","type":"uint256"}],"name":"pendingReward","outputs":[{"internalType":"uint256","name":"pending","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"pendingRewardsOfOwner","outputs":[{"components":[{"internalType":"uint256","name":"relicId","type":"uint256"},{"internalType":"uint256","name":"poolId","type":"uint256"},{"internalType":"uint256","name":"pendingReward","type":"uint256"}],"internalType":"struct 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PositionInfo[]","name":"positionInfos","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rewardToken","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"rewarder","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_emissionCurve","type":"address"}],"name":"setEmissionCurve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"fromId","type":"uint256"},{"internalType":"uint256","name":"toId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"shift","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"fromId","type":"uint256"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"address","name":"to","type":"address"}],"name":"split","outputs":[{"internalType":"uint256","name":"newId","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAllocPoint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"pid","type":"uint256"}],"name":"updatePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"relicId","type":"uint256"}],"name":"updatePosition","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"relicId","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"relicId","type":"uint256"},{"internalType":"address","name":"harvestTo","type":"address"}],"name":"withdrawAndHarvest","outputs":[],"stateMutability":"nonpayable","type":"function"}]Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000f24bcf4d1e507740041c9cfd2dddb29585adce1e0000000000000000000000009b3a90c586f25d815076636f71df721a88c9408a
-----Decoded View---------------
Arg [0] : _rewardToken (address): 0xf24bcf4d1e507740041c9cfd2dddb29585adce1e
Arg [1] : _emissionCurve (address): 0x9b3a90c586f25d815076636f71df721a88c9408a
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000f24bcf4d1e507740041c9cfd2dddb29585adce1e
Arg [1] : 0000000000000000000000009b3a90c586f25d815076636f71df721a88c9408a