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TokenTracker
Latest 25 from a total of 57 transactions
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| Withdraw Lender | 271637582 | 451 days ago | IN | 0 ETH | 0.00000315 | ||||
| Withdraw Lender | 271505438 | 451 days ago | IN | 0 ETH | 0.00002492 | ||||
| Withdraw Borrowe... | 271501899 | 451 days ago | IN | 0 ETH | 0.00010273 | ||||
| Withdraw Lender | 268667737 | 459 days ago | IN | 0 ETH | 0.00000243 | ||||
| Withdraw Lender | 268663256 | 459 days ago | IN | 0 ETH | 0.00000243 | ||||
| Withdraw Lender | 267391002 | 463 days ago | IN | 0 ETH | 0.00000252 | ||||
| Withdraw Lender | 267390045 | 463 days ago | IN | 0 ETH | 0.0000028 | ||||
| Withdraw Lender | 267384700 | 463 days ago | IN | 0 ETH | 0.0000018 | ||||
| Withdraw Lender | 267382456 | 463 days ago | IN | 0 ETH | 0.00000184 | ||||
| Withdraw Lender | 266921758 | 465 days ago | IN | 0 ETH | 0.00000229 | ||||
| Withdraw Lender | 266918203 | 465 days ago | IN | 0 ETH | 0.00000238 | ||||
| Withdraw Lender | 262531025 | 477 days ago | IN | 0 ETH | 0.00000213 | ||||
| Withdraw Lender | 257877709 | 491 days ago | IN | 0 ETH | 0.00000241 | ||||
| Withdraw Lender | 257875831 | 491 days ago | IN | 0 ETH | 0.0000023 | ||||
| Withdraw Lender | 257824190 | 491 days ago | IN | 0 ETH | 0.00000247 | ||||
| Withdraw Lender | 257189775 | 493 days ago | IN | 0 ETH | 0.00000278 | ||||
| Withdraw Lender | 257185337 | 493 days ago | IN | 0 ETH | 0.00000313 | ||||
| Deposit Lender | 254391905 | 501 days ago | IN | 0 ETH | 0.00000322 | ||||
| Deposit Lender | 254364335 | 501 days ago | IN | 0 ETH | 0.00000314 | ||||
| Withdraw Lender | 254277183 | 501 days ago | IN | 0 ETH | 0.000002 | ||||
| Withdraw Lender | 252446578 | 507 days ago | IN | 0 ETH | 0.00000523 | ||||
| Withdraw Lender | 250866629 | 511 days ago | IN | 0 ETH | 0.00000208 | ||||
| Deposit Lender | 248384487 | 519 days ago | IN | 0 ETH | 0.00000326 | ||||
| Deposit Lender | 248313418 | 519 days ago | IN | 0 ETH | 0.00000843 | ||||
| Withdraw Lender | 243061063 | 534 days ago | IN | 0 ETH | 0.00000288 |
Cross-Chain Transactions
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Contract Name:
CurveTwoCryptoOptimizedLiquidityWarehouse
Compiler Version
v0.8.19+commit.7dd6d404
Optimization Enabled:
Yes with 125 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.19;
import {LiquidityWarehouse} from "./LiquidityWarehouse.sol";
import {CurveTwoCryptoOptimizedHelperLibrary} from "./CurveTwoCryptoOptimizedHelperLibrary.sol";
contract CurveTwoCryptoOptimizedLiquidityWarehouse is LiquidityWarehouse {
/// @notice Price deviation threshold
CurveTwoCryptoOptimizedHelperLibrary.CurveLWVariables internal variables;
/// @notice Withdraw asset list
mapping(address curvePool => address withdrawAsset) internal s_withdrawAsset;
/// @notice Map for asset configuration
mapping(address asset => CurveTwoCryptoOptimizedHelperLibrary.AssetConfig config) internal s_assetConfigs;
constructor(
LiquidityWarehouse.ConstructorParams memory params,
CurveTwoCryptoOptimizedHelperLibrary.AssetConfigParams[] memory assetConfigs,
CurveTwoCryptoOptimizedHelperLibrary.WithdrawAssetConfig[] memory withdrawAsset,
uint256 maxDeviation,
uint256 extraMargin
) LiquidityWarehouse(params) {
CurveTwoCryptoOptimizedHelperLibrary.setAssetConfigs(assetConfigs, s_assetConfigs);
CurveTwoCryptoOptimizedHelperLibrary.setWithdrawAsset(withdrawAsset, s_withdrawAsset);
CurveTwoCryptoOptimizedHelperLibrary.setMaxDeviation(maxDeviation, variables);
CurveTwoCryptoOptimizedHelperLibrary.setExtraMargin(extraMargin, variables);
}
/// @notice Sets asset configurations
/// @param withdrawAssetConfig Array of struct of curvePool with their withdraw asset
function setWithdrawAsset(CurveTwoCryptoOptimizedHelperLibrary.WithdrawAssetConfig[] calldata withdrawAssetConfig)
external
onlyRole(DEFAULT_ADMIN_ROLE)
{
CurveTwoCryptoOptimizedHelperLibrary.setWithdrawAsset(withdrawAssetConfig, s_withdrawAsset);
}
/// @notice Sets asset configurations
/// @param assetConfigs Array of assets with their configuration
function setAssetConfigs(CurveTwoCryptoOptimizedHelperLibrary.AssetConfigParams[] calldata assetConfigs)
external
onlyRole(DEFAULT_ADMIN_ROLE)
{
CurveTwoCryptoOptimizedHelperLibrary.setAssetConfigs(assetConfigs, s_assetConfigs);
}
/// @notice Function to set maxDeviation
/// @param maxDeviation value of max deviation
function setMaxDeviation(uint256 maxDeviation) external onlyRole(DEFAULT_ADMIN_ROLE) {
CurveTwoCryptoOptimizedHelperLibrary.setMaxDeviation(maxDeviation, variables);
}
/// @notice Function to set maxDeviation
/// @param extraMargin value of extra margin
function setExtraMargin(uint256 extraMargin) external onlyRole(DEFAULT_ADMIN_ROLE) {
CurveTwoCryptoOptimizedHelperLibrary.setExtraMargin(extraMargin, variables);
}
/// @inheritdoc LiquidityWarehouse
function _withdrawFromTarget(uint256 withdrawAmount, address withdrawTarget, bytes memory)
internal
override
returns (bool)
{
return CurveTwoCryptoOptimizedHelperLibrary.withdrawAndSwap(
CurveTwoCryptoOptimizedHelperLibrary.WithdrawAndSwapParams({
maxDeviation: variables.maxDeviation,
withdrawAmount: withdrawAmount,
extraMargin: variables.extraMargin,
withdrawTarget: withdrawTarget,
baseAsset: address(s_terms.asset)
}),
s_withdrawAsset,
s_assetConfigs
);
}
/// @inheritdoc LiquidityWarehouse
function _getDeployedAssetValue(address withdrawTarget) internal view override returns (uint256) {
return CurveTwoCryptoOptimizedHelperLibrary.convertToBaseAsset(
withdrawTarget,
s_withdrawAsset[withdrawTarget],
address(s_terms.asset),
variables.maxDeviation,
s_assetConfigs
);
}
/// @inheritdoc LiquidityWarehouse
function _afterExecute(bytes memory data) internal override {}
}// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.19;
import {IERC20} from "openzeppelin/token/ERC20/IERC20.sol";
import {ILiquidityWarehouse} from "./interfaces/ILiquidityWarehouse.sol";
import {ERC1155Supply} from "openzeppelin/token/ERC1155/extensions/ERC1155Supply.sol";
import {ERC1155} from "openzeppelin/token/ERC1155/ERC1155.sol";
import {EnumerableSet} from "openzeppelin/utils/structs/EnumerableSet.sol";
import {SafeCast} from "openzeppelin/utils/math/SafeCast.sol";
import {SafeERC20} from "openzeppelin/token/ERC20/utils/SafeERC20.sol";
import {LiquidityWarehouseAccessControl} from "./utils/LiquidityWarehouseAccessControl.sol";
import {ReentrancyGuard} from "openzeppelin/security/ReentrancyGuard.sol";
import {Pausable} from "openzeppelin/security/Pausable.sol";
import {MathUtils} from "aave-v3-core/contracts/protocol/libraries/math/MathUtils.sol";
import {WadRayMath} from "aave-v3-core/contracts/protocol/libraries/math/WadRayMath.sol";
import {Math} from "openzeppelin/utils/math/Math.sol";
import {IEmergencyPausable} from "./interfaces/IEmergencyPausable.sol";
import {AccessControlDefaultAdminRules} from "openzeppelin/access/AccessControlDefaultAdminRules.sol";
import {IWETH} from "./vendor/IWETH.sol";
abstract contract LiquidityWarehouse is
ILiquidityWarehouse,
IEmergencyPausable,
ERC1155Supply,
LiquidityWarehouseAccessControl,
ReentrancyGuard,
Pausable,
AccessControlDefaultAdminRules
{
using SafeERC20 for IERC20;
using SafeCast for uint256;
using EnumerableSet for EnumerableSet.AddressSet;
using WadRayMath for uint256;
/// @notice The role required to emergency pause or emergency
/// unpause the contract
bytes32 public constant PAUSER_ROLE = keccak256("PAUSER_ROLE");
/// @notice The role required to make an initial borrower deposit
bytes32 public constant PRIMARY_BORROWER_ROLE = keccak256("PRIMARY_BORROWER_ROLE");
uint256 public constant LENDER_LP_TOKEN_ID = 0;
uint256 public constant BORROWER_LP_TOKEN_ID = 1;
/// @notice Struct containing the list of constructor params
/// to initialize the liquidity warehouse
struct ConstructorParams {
/// @notice The liquidity threshold to 18dp
uint256 liquidationThreshold;
/// @notice The capacity threshold to 18dp
uint256 capacityThreshold;
/// @notice The interest rate to 18dp
uint256 interestRate;
/// @notice The interest fee percentage to 18dp
uint256 interestFee;
/// @notice The withdrawal fee percentage to 18dp
uint256 withdrawalFee;
/// @notice The initial amount of seconds before the default admin role can
/// be transferred
uint48 initialDelay;
/// @notice The address of the asset the loans in the liquidity warehouse
/// will be denominated in
address asset;
/// @notice The address that will receive fees
address feeRecipient;
/// @notice The address of the admin
address initialAdmin;
/// @notice The address of the wrapped native token
address wrappedNativeToken;
/// @notice The uri for the LP tokens
string uri;
}
//###########################//
// Storage Variables //
//###########################//
/// @notice The wrapped native token
IWETH internal immutable i_wrappedNativeToken;
/// @notice The liquidity warehouse terms
Terms internal s_terms;
/// @notice The asset data
Asset internal s_assetData;
/// @notice The assets in the liquidity warehouse
EnumerableSet.AddressSet internal s_assets;
/// @notice True if the liquidity warehouse is active
bool internal s_isActive;
constructor(ConstructorParams memory params)
ERC1155(params.uri)
AccessControlDefaultAdminRules(params.initialDelay, params.initialAdmin)
{
if (params.asset == address(0)) revert InvalidAsset();
if (params.wrappedNativeToken == address(0)) revert InvalidWrappedNativeToken();
i_wrappedNativeToken = IWETH(params.wrappedNativeToken);
s_terms.asset = IERC20(params.asset);
_setCapacityThreshold(params.capacityThreshold);
_setLiquidationThreshold(params.liquidationThreshold);
_setInterestFee(params.interestFee);
_setWithdrawalFee(params.withdrawalFee);
_setFeeRecipient(params.feeRecipient);
_setInterestRate(params.interestRate);
}
/// @inheritdoc ERC1155
function supportsInterface(bytes4 interfaceId)
public
view
virtual
override(AccessControlDefaultAdminRules, ERC1155)
returns (bool)
{
return AccessControlDefaultAdminRules.supportsInterface(interfaceId) || ERC1155.supportsInterface(interfaceId);
}
/// @notice Receive function to allow liquidity warehouse to receive native tokens
receive() external payable {
// Automatically wrap native tokens
i_wrappedNativeToken.deposit{value: msg.value}();
}
//############################//
// Deposits/Withdrawals //
//############################//
/// @inheritdoc ILiquidityWarehouse
function deactivate(address[] calldata withdrawTargets, bytes calldata data) external {
if (!s_isActive) revert Inactive();
if (_isLiquidationThresholdFulfilled()) revert LiquidationThresholdNotBreached();
_compoundInterest();
s_isActive = false;
_withdrawAllFromTargets(withdrawTargets, data);
emit Deactivated();
}
/// @inheritdoc ILiquidityWarehouse
function activate() external {
if (s_isActive) revert Active();
if (!_isLiquidationThresholdFulfilled()) revert LiquidationThresholdBreached();
// Set interestLastUpdatedAt to current time to prevent
// interest from accruing from the last time the
// liquidity warehouse was deactivated
s_assetData.interestLastUpdatedAt = block.timestamp.toUint40();
_activate();
}
/// @inheritdoc ILiquidityWarehouse
function liquidate(address[] calldata withdrawTargets, bytes calldata data) external {
if (s_isActive) revert Active();
_withdrawAllFromTargets(withdrawTargets, data);
}
/// @inheritdoc ILiquidityWarehouse
function depositLender(uint256 depositAmount) external whenNotPaused nonReentrant {
if (getBorrowerNetAssetValue() == 0) revert CapacityThresholdBreached();
_compoundInterest();
uint256 shareAmt = _convertToShares(totalSupply(LENDER_LP_TOKEN_ID), getLenderNetAssetValue(), depositAmount);
if (shareAmt == 0) revert ZeroShareAmt();
s_assetData.lenderBalance += depositAmount.toUint216();
s_terms.asset.safeTransferFrom(msg.sender, address(this), depositAmount);
_mint(msg.sender, LENDER_LP_TOKEN_ID, shareAmt, bytes(""));
if (!_isCapacityThresholdFulfilled()) {
revert CapacityThresholdBreached();
}
emit AssetDeposited(depositAmount, false);
}
/// @inheritdoc ILiquidityWarehouse
function depositBorrower(uint256 depositAmount) external whenNotPaused nonReentrant {
_compoundInterest();
uint256 shareAmt =
_convertToShares(totalSupply(BORROWER_LP_TOKEN_ID), getBorrowerNetAssetValue(), depositAmount);
if (shareAmt == 0) revert ZeroShareAmt();
if (totalSupply(BORROWER_LP_TOKEN_ID) == 0 && !hasRole(PRIMARY_BORROWER_ROLE, msg.sender)) {
revert AccessForbidden();
}
s_terms.asset.safeTransferFrom(msg.sender, address(this), depositAmount);
_mint(msg.sender, BORROWER_LP_TOKEN_ID, shareAmt, bytes(""));
if (_isLiquidationThresholdFulfilled()) {
_activate();
}
emit AssetDeposited(depositAmount, true);
}
/// @inheritdoc ILiquidityWarehouse
function withdrawLender(uint256 shareAmount, bytes calldata data) external nonReentrant {
if (msg.sender == s_terms.feeRecipient) revert AccessForbidden();
_compoundInterest();
if (shareAmount > balanceOf(msg.sender, LENDER_LP_TOKEN_ID)) revert InsufficientBalance();
uint256 withdrawableAmount =
_convertToAssets(totalSupply(LENDER_LP_TOKEN_ID), getLenderNetAssetValue(), shareAmount);
uint256 actualWithdrawableAmount = withdrawableAmount - _withdrawFromTargets(withdrawableAmount, data);
uint256 feeAmount = uint256(s_terms.withdrawalFee).wadMul(actualWithdrawableAmount);
/// Subtract by the full withdrawableAmount to account for any losses from withdrawing
/// from any target contracts on the borrower's protocol. The fee amount should still
/// be calculated based on the actual amount withdrawn from the borrower protocol.
s_assetData.lenderBalance -= (withdrawableAmount - feeAmount).toUint216();
uint256 feeShares = feeAmount * shareAmount / withdrawableAmount;
_safeTransferFrom(msg.sender, s_terms.feeRecipient, LENDER_LP_TOKEN_ID, feeShares, bytes(""));
_burn(msg.sender, LENDER_LP_TOKEN_ID, shareAmount - feeShares);
s_terms.asset.safeTransfer(msg.sender, actualWithdrawableAmount - feeAmount);
emit AssetWithdrawn(actualWithdrawableAmount - feeAmount, false);
}
/// @inheritdoc ILiquidityWarehouse
function withdrawLenderFees(bytes calldata data) external nonReentrant onlyFeeRecipient {
_compoundInterest();
uint256 shareAmount = balanceOf(s_terms.feeRecipient, LENDER_LP_TOKEN_ID);
uint256 withdrawableAmount =
_convertToAssets(totalSupply(LENDER_LP_TOKEN_ID), getLenderNetAssetValue(), shareAmount);
s_assetData.lenderBalance -= withdrawableAmount.toUint216();
withdrawableAmount -= _withdrawFromTargets(withdrawableAmount, data);
_burn(msg.sender, LENDER_LP_TOKEN_ID, shareAmount);
s_terms.asset.safeTransfer(msg.sender, withdrawableAmount);
emit AssetWithdrawn(withdrawableAmount, false);
}
/// @inheritdoc ILiquidityWarehouse
function withdrawBorrower(uint256 shareAmount, bytes calldata data) external nonReentrant {
if (msg.sender == s_terms.feeRecipient) revert AccessForbidden();
_compoundInterest();
if (shareAmount > balanceOf(msg.sender, BORROWER_LP_TOKEN_ID)) revert InsufficientBalance();
uint256 withdrawableAmount =
_convertToAssets(totalSupply(BORROWER_LP_TOKEN_ID), getBorrowerNetAssetValue(), shareAmount);
withdrawableAmount -= _withdrawFromTargets(withdrawableAmount, data);
uint256 withdrawalFee = uint256(s_terms.withdrawalFee);
uint256 feeAmount = withdrawalFee.wadMul(withdrawableAmount);
uint256 withdrawableAmountAfterFee = withdrawableAmount - feeAmount;
_safeTransferFrom(
msg.sender, s_terms.feeRecipient, BORROWER_LP_TOKEN_ID, withdrawalFee.wadMul(shareAmount), bytes("")
);
_burn(msg.sender, BORROWER_LP_TOKEN_ID, shareAmount - withdrawalFee.wadMul(shareAmount));
s_terms.asset.safeTransfer(msg.sender, withdrawableAmountAfterFee);
if (s_isActive && !_isCapacityThresholdFulfilled()) {
revert CapacityThresholdBreached();
}
emit AssetWithdrawn(withdrawableAmountAfterFee, true);
}
/// @inheritdoc ILiquidityWarehouse
function withdrawBorrowerFees(bytes calldata data) external nonReentrant onlyFeeRecipient {
_compoundInterest();
uint256 shareAmount = balanceOf(s_terms.feeRecipient, BORROWER_LP_TOKEN_ID);
uint256 withdrawableAmount =
_convertToAssets(totalSupply(BORROWER_LP_TOKEN_ID), getBorrowerNetAssetValue(), shareAmount);
withdrawableAmount -= _withdrawFromTargets(withdrawableAmount, data);
_burn(msg.sender, BORROWER_LP_TOKEN_ID, shareAmount);
s_terms.asset.safeTransfer(msg.sender, withdrawableAmount);
emit AssetWithdrawn(withdrawableAmount, true);
}
//####################################//
// Liquidity Warehouse Access Control //
//####################################//
/// @inheritdoc ILiquidityWarehouse
function toggleWhitelist(LiquidityWarehouseAccessControl.Action[] calldata actions)
external
override
onlyRole(DEFAULT_ADMIN_ROLE)
{
_toggleWhitelist(actions);
}
/// @inheritdoc ILiquidityWarehouse
function execute(LiquidityWarehouseAccessControl.ExecuteAction[] calldata executeActions, bytes calldata data)
external
payable
override
nonReentrant
{
_execute(executeActions, msg.sender == owner());
_afterExecute(data);
}
/// @inheritdoc ILiquidityWarehouse
function isWhitelisted(address target, address caller, bytes4 fnSelector) external view override returns (bool) {
return _isWhitelisted(target, caller, fnSelector);
}
//################//
// Set Terms //
//################//
/// @inheritdoc ILiquidityWarehouse
function setLiquidationThreshold(uint256 liquidationThreshold) public onlyRole(DEFAULT_ADMIN_ROLE) {
_setLiquidationThreshold(liquidationThreshold);
}
/// @inheritdoc ILiquidityWarehouse
function setCapacityThreshold(uint256 capacityThreshold) public onlyRole(DEFAULT_ADMIN_ROLE) {
_setCapacityThreshold(capacityThreshold);
}
/// @inheritdoc ILiquidityWarehouse
function setInterestFee(uint256 fee) public onlyRole(DEFAULT_ADMIN_ROLE) {
_compoundInterest();
_setInterestFee(fee);
}
/// @inheritdoc ILiquidityWarehouse
function setWithdrawalFee(uint256 fee) public onlyRole(DEFAULT_ADMIN_ROLE) {
_setWithdrawalFee(fee);
}
/// @inheritdoc ILiquidityWarehouse
function setFeeRecipient(address feeRecipient) public onlyRole(DEFAULT_ADMIN_ROLE) {
_compoundInterest();
_setFeeRecipient(feeRecipient);
}
/// @inheritdoc ILiquidityWarehouse
function setInterestRate(uint256 interestRate) public onlyRole(DEFAULT_ADMIN_ROLE) {
_compoundInterest();
_setInterestRate(interestRate);
}
//################//
// Pausable //
//################//
/// @inheritdoc IEmergencyPausable
function emergencyPause() external onlyRole(PAUSER_ROLE) whenNotPaused {
_pause();
}
/// @inheritdoc IEmergencyPausable
function emergencyUnpause() external onlyRole(PAUSER_ROLE) whenPaused {
_unpause();
}
//############//
// View //
//############//
/// @inheritdoc ILiquidityWarehouse
function isPaused() external view returns (bool) {
return paused();
}
/// @inheritdoc ILiquidityWarehouse
function convertToAssets(bool isBorrower, uint256 shareAmount) external view returns (uint256) {
uint256 lpTokenId = isBorrower ? BORROWER_LP_TOKEN_ID : LENDER_LP_TOKEN_ID;
uint256 totalAssetAmount = isBorrower ? getBorrowerNetAssetValue() : getLenderNetAssetValue();
return _convertToAssets(totalSupply(lpTokenId), totalAssetAmount, shareAmount);
}
/// @inheritdoc ILiquidityWarehouse
function convertToShares(bool isBorrower, uint256 assetAmount) external view returns (uint256) {
uint256 lpTokenId = isBorrower ? BORROWER_LP_TOKEN_ID : LENDER_LP_TOKEN_ID;
uint256 totalAssetAmount = isBorrower ? getBorrowerNetAssetValue() : getLenderNetAssetValue();
return _convertToShares(totalSupply(lpTokenId), totalAssetAmount, assetAmount);
}
/// @inheritdoc ILiquidityWarehouse
function getLenderBalance() public view returns (uint256) {
uint256 lenderBalance = s_assetData.lenderBalance;
if (!s_isActive) return lenderBalance;
uint256 compoundedInterest = MathUtils.calculateCompoundedInterest(
uint256(s_terms.interestRate).wadToRay(), s_assetData.interestLastUpdatedAt, block.timestamp
).rayToWad();
return lenderBalance.wadMul(compoundedInterest);
}
/// @inheritdoc ILiquidityWarehouse
function getTerms() external view returns (Terms memory) {
return s_terms;
}
/// @inheritdoc ILiquidityWarehouse
function getNetAssetValue() public view returns (uint256) {
address[] memory withdrawTargets = _getWithdrawableTargets();
uint256 nav;
/// We acknowledge that this may be gas intensive but we do not foresee there being
/// a high number of withdraw targets
for (uint256 i; i < withdrawTargets.length; ++i) {
nav += _getDeployedAssetValue(withdrawTargets[i]);
}
return s_terms.asset.balanceOf(address(this)) + nav;
}
/// @inheritdoc ILiquidityWarehouse
function getLenderNetAssetValue() public view returns (uint256) {
return Math.min(getNetAssetValue(), getLenderBalance());
}
/// @inheritdoc ILiquidityWarehouse
function getBorrowerNetAssetValue() public view returns (uint256) {
return getNetAssetValue() - getLenderNetAssetValue();
}
/// @inheritdoc ILiquidityWarehouse
function isLiquidationThresholdFulfilled() external view returns (bool) {
return _isLiquidationThresholdFulfilled();
}
/// @inheritdoc ILiquidityWarehouse
function isCapacityThresholdFulfilled() external view returns (bool) {
return _isCapacityThresholdFulfilled();
}
/// @inheritdoc ILiquidityWarehouse
function getWithdrawTargets() external view returns (address[] memory) {
return s_withdrawTargets.values();
}
/// @inheritdoc ILiquidityWarehouse
function isActive() external view returns (bool) {
return s_isActive;
}
//################//
// Internal //
//################//
/// @notice Hook to run before withdrawals are processed
/// @param withdrawAmount The amount to withdraw from the target
/// @param withdrawTarget The target address to withdraw from
/// @param data Arbitrary data that can be used by the underlying implementation
/// @return bool Returns true if should stop withdrawing from the next withdraw target
function _withdrawFromTarget(uint256 withdrawAmount, address withdrawTarget, bytes memory data)
internal
virtual
returns (bool);
/// @notice Converts assets to share value
/// @param totalShareAmount The total amount of minted shares
/// @param totalAssetAmount The total amount of owed assets
/// @param assetAmount The amount of assets to convert to shares
/// @return uint256 The number of shares
function _convertToShares(uint256 totalShareAmount, uint256 totalAssetAmount, uint256 assetAmount)
internal
pure
returns (uint256)
{
if (totalShareAmount == 0) return assetAmount; // Handle case when no shares have been minted yet
return assetAmount * totalShareAmount / totalAssetAmount;
}
/// @notice Converts shares to the asset value
/// @param totalShareAmount The total amount of minted shares
/// @param totalAssetAmount The total amount of owed assets
/// @param shareAmount The amount of shares to convert to assets
/// @return uint256 The number of assets
function _convertToAssets(uint256 totalShareAmount, uint256 totalAssetAmount, uint256 shareAmount)
internal
pure
returns (uint256)
{
if (totalShareAmount == 0) return 0;
return shareAmount * totalAssetAmount / totalShareAmount;
}
/// @notice Updates the lender's balance with the interest owed
function _compoundInterest() internal {
uint256 lenderBalanceBefore = uint256(s_assetData.lenderBalance);
uint40 interestLastUpdatedAt = s_assetData.interestLastUpdatedAt;
s_assetData.interestLastUpdatedAt = block.timestamp.toUint40();
if (lenderBalanceBefore > 0 && s_isActive && block.timestamp > interestLastUpdatedAt) {
uint256 compoundedInterest = MathUtils.calculateCompoundedInterest(
uint256(s_terms.interestRate).wadToRay(), interestLastUpdatedAt, block.timestamp
).rayToWad();
s_assetData.lenderBalance = lenderBalanceBefore.wadMul(compoundedInterest).toUint216();
uint256 earnedFeeAmount =
uint256(s_terms.interestFee).wadMul(s_assetData.lenderBalance - lenderBalanceBefore);
// There is an edge case for when the net asset value of the liquidity warehouse is less
// than the lender's owed balance. In this case the interest will continue to compound and a portion
// of the fees will be minted to the fee recipient address even though the lender's net asset value is
// capped at the liquidity warehouse's net asset value. We expect this to be fine as in such cases
// the liquidity warehouse will most likely be deactivated and interest will stop accruing so the
// losses will be minimal.
uint256 feeShareAmount =
earnedFeeAmount * totalSupply(LENDER_LP_TOKEN_ID) / (s_assetData.lenderBalance - earnedFeeAmount);
_mint(s_terms.feeRecipient, LENDER_LP_TOKEN_ID, feeShareAmount, bytes(""));
}
}
/// @notice Updates the interest rate
/// @param interestRate The new interest rate
function _setInterestRate(uint256 interestRate) internal {
uint256 oldInterestRate = s_terms.interestRate;
s_terms.interestRate = interestRate.toUint64();
emit InterestRateSet(oldInterestRate, interestRate);
}
/// @notice Updates the liquidation threshold
/// @param liquidationThreshold The new liquidation threshold
function _setLiquidationThreshold(uint256 liquidationThreshold) internal {
uint256 oldLiquidationThreshold = s_terms.liquidationThreshold;
s_terms.liquidationThreshold = liquidationThreshold.toUint64();
emit LiquidationThresholdSet(oldLiquidationThreshold, liquidationThreshold);
}
/// @notice Updates the capacity threshold
/// @param capacityThreshold The new capacity threshold
function _setCapacityThreshold(uint256 capacityThreshold) internal {
if (capacityThreshold < s_terms.liquidationThreshold) {
revert InvalidCapacityThreshold();
}
uint256 oldCapacityThreshold = s_terms.capacityThreshold;
s_terms.capacityThreshold = capacityThreshold.toUint64();
emit CapacityThresholdSet(oldCapacityThreshold, capacityThreshold);
}
/// @notice Updates the interest fee
/// @param fee The new interest fee
function _setInterestFee(uint256 fee) internal {
uint256 oldFee = s_terms.interestFee;
s_terms.interestFee = fee.toUint64();
emit InterestFeeSet(oldFee, fee);
}
/// @notice Updates the fee taken from withdrawals
/// @param fee The new withdrawal fee
function _setWithdrawalFee(uint256 fee) internal {
uint256 oldFee = s_terms.withdrawalFee;
s_terms.withdrawalFee = fee.toUint64();
emit WithdrawalFeeSet(oldFee, fee);
}
/// @notice Updates the fee recipient
/// @param feeRecipient The new fee recipient
function _setFeeRecipient(address feeRecipient) internal {
if (feeRecipient == address(0)) revert InvalidFeeRecipient();
address oldFeeRecipient = s_terms.feeRecipient;
s_terms.feeRecipient = feeRecipient;
emit FeeRecipientSet(oldFeeRecipient, feeRecipient);
}
/// @notice Determines if the capacity threshold is fulfilled
/// @return bool True if the capacity threshold is fulfilled
function _isCapacityThresholdFulfilled() internal view returns (bool) {
uint256 totalNetAssetValue = getNetAssetValue();
uint256 borrowerNetAssetValue = getBorrowerNetAssetValue();
return totalNetAssetValue > 0 && borrowerNetAssetValue.wadDiv(totalNetAssetValue) > s_terms.capacityThreshold;
}
/// @notice Determines if the liquidation threshold is fulfilled
/// @return bool True if the liquidation threshold is fulfilled
function _isLiquidationThresholdFulfilled() internal view returns (bool) {
uint256 totalNetAssetValue = getNetAssetValue();
uint256 borrowerNetAssetValue = getBorrowerNetAssetValue();
return totalNetAssetValue > 0 && borrowerNetAssetValue.wadDiv(totalNetAssetValue) > s_terms.liquidationThreshold;
}
/// @notice Withdraws from all whitelisted pools
/// @param withdrawTargets The target addresses to try withdraw from
/// @param data Arbitrary data that can be used by the underlying implementation
function _withdrawAllFromTargets(address[] memory withdrawTargets, bytes memory data) internal {
uint256 numWithdrawTargets = withdrawTargets.length;
for (uint256 i; i < numWithdrawTargets; ++i) {
address withdrawTarget = withdrawTargets[i];
if (!s_withdrawTargets.contains(withdrawTarget)) revert InvalidWithdrawTarget(withdrawTarget);
_withdrawFromTarget(type(uint256).max, withdrawTarget, data);
}
}
/// @notice Withdraws from a list of withdraw target addresses
/// @param withdrawAmount The amount to withdraw
/// @param data Arbitrary data that can be used by the underlying implementation
/// @return uint256 The amount of missing dust
function _withdrawFromTargets(uint256 withdrawAmount, bytes memory data) internal returns (uint256) {
uint256 currentAssetBalance = s_terms.asset.balanceOf(address(this));
if (currentAssetBalance > withdrawAmount) return 0;
uint256 missingWithdrawableAmount = withdrawAmount - currentAssetBalance;
uint256 idx;
bool shouldStopWithdrawing;
while (!shouldStopWithdrawing && idx < s_withdrawTargets.values().length) {
shouldStopWithdrawing = _withdrawFromTarget(missingWithdrawableAmount, s_withdrawTargets.at(idx), data);
currentAssetBalance = s_terms.asset.balanceOf(address(this));
missingWithdrawableAmount = currentAssetBalance > withdrawAmount ? 0 : withdrawAmount - currentAssetBalance;
++idx;
}
(uint256 maxLossAmount) = abi.decode(data, (uint256));
if (missingWithdrawableAmount > maxLossAmount) revert InsufficientLiquidity(missingWithdrawableAmount);
return missingWithdrawableAmount;
}
/// @notice Activate the liquidity warehouse
function _activate() internal {
s_isActive = true;
emit Activated();
}
/// @notice Fetches the net asset value for the assets deployed
/// @param withdrawTarget The address to read the deployed asset value from
/// @return uint256 The asset's net asset value
function _getDeployedAssetValue(address withdrawTarget) internal view virtual returns (uint256);
/// @notice Hook to run after execute
function _afterExecute(bytes memory data) internal virtual;
//################//
// Modifiers //
//################//
modifier onlyFeeRecipient() {
if (msg.sender != s_terms.feeRecipient) revert AccessForbidden();
_;
}
}// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.19;
import {ICurveTwocryptoOptimized} from "./vendor/curve/ICurveTwocryptoOptimized.sol";
import {ICurveStableSwapNG} from "./vendor/curve/ICurveStableSwapNG.sol";
import {IERC20Metadata} from "openzeppelin/token/ERC20/extensions/IERC20Metadata.sol";
library CurveTwoCryptoOptimizedHelperLibrary {
/// @notice This error is thrown when asset is not found in curve pool's index
error AssetNotFound(address asset);
/// @notice This error is thrown when asset config argument is invalid
error InvalidAssetConfig();
/// @notice This error is thrown when price deviation surpass max deviation threshold
error PriceDeviationTooHigh();
/// @notice Asset configuration params
struct AssetConfigParams {
/// @notice Asset contract address
address asset;
/// @notice Asset configuration
AssetConfig assetConfig;
}
/// @notice Asset configuration
struct AssetConfig {
/// @notice Swap pool id
/// @dev 0 for StableSwapNg
/// @dev 1 for TwoCryptoOptimized
uint8 id;
/// @notice Asset path fee
uint24 fee;
/// @notice Asset swap slippage
uint128 slippage;
/// @notice Curve Swap Pool
address curveSwapPool;
}
/// @notice Asset withdraw configuration
struct WithdrawAssetConfig {
/// @notice withdraw asset curve pool
address curvePool;
/// @notice withdraw asset address
address withdrawAsset;
}
/// @notice WithdrawAndSwap parameters
struct WithdrawAndSwapParams {
/// @notice Max deviation threshold
uint256 maxDeviation;
/// @notice Withdraw amount in base asset decimals
uint256 withdrawAmount;
/// @notice Extra margin to counter slippage
uint256 extraMargin;
/// @notice Withdraw target address
address withdrawTarget;
/// @notice Base asset address
address baseAsset;
}
/// @notice SwapToBaseAsset parameters
struct SwapToBaseAssetParams {
/// @notice Initial asset address
address asset;
/// @notice Base asset address
address baseAsset;
/// @notice Max deviation threshold
uint256 maxDeviation;
}
/// @notice Curve Pool paramater to get expected exchange amount
struct CurvePoolExpectationParams {
/// @notice Curve pool address
address poolAddress;
/// @notice assetIn Address that want to be swap
address assetIn;
/// @notice assetOut Address of received asset
address assetOut;
/// @notice Amount of received asset
uint256 amount;
/// @notice Max deviation threshold
uint256 maxDeviation;
}
/// @notice Curve LW variables
struct CurveLWVariables {
/// @notice Max deviation threshold
uint256 maxDeviation;
/// @notice Withdraw extra margin
uint256 extraMargin;
}
/// @notice This event emitted when max deviation is changed
/// @param maxDeviation new maxDeviation value
event MaxDeviationSet(uint256 maxDeviation);
/// @notice This event emitted when max deviation is changed
/// @param extraMargin new maxDeviation value
event ExtraMarginSet(uint256 extraMargin);
/// @notice Sets assets with their configuration
/// @param assetConfigs Array of assets with config
/// @param s_assetConfigs Mapping asset to its config
function setAssetConfigs(
AssetConfigParams[] memory assetConfigs,
mapping(address asset => AssetConfig config) storage s_assetConfigs
) public {
for (uint256 i; i < assetConfigs.length; ++i) {
AssetConfigParams memory assetConfigParams = assetConfigs[i];
if (assetConfigParams.asset == address(0)) {
revert InvalidAssetConfig();
}
s_assetConfigs[assetConfigParams.asset] = assetConfigParams.assetConfig;
}
}
/// @notice Sets asset configurations
/// @param withdrawAssetConfig Array of struct of curvePool with their withdraw asset
/// @param s_withdrawAsset Mapping for curvePool to their desired withdraw asset
function setWithdrawAsset(
WithdrawAssetConfig[] memory withdrawAssetConfig,
mapping(address curvePool => address withdrawAsset) storage s_withdrawAsset
) public {
for (uint256 i; i < withdrawAssetConfig.length; ++i) {
s_withdrawAsset[withdrawAssetConfig[i].curvePool] = withdrawAssetConfig[i].withdrawAsset;
}
}
/// @notice Function to set maxDeviation
/// @param maxDeviation New max deviation value
/// @param variables Struct for all LWs variable
function setMaxDeviation(uint256 maxDeviation, CurveLWVariables storage variables) public {
variables.maxDeviation = maxDeviation;
emit MaxDeviationSet(maxDeviation);
}
/// @notice Function to set maxDeviation
/// @param extraMargin New max deviation value
/// @param variables Struct for all LWs variable
function setExtraMargin(uint256 extraMargin, CurveLWVariables storage variables) public {
variables.extraMargin = extraMargin;
emit ExtraMarginSet(extraMargin);
}
/// @notice Function to withdraw curve lp token and swap it to desired asset
/// @param params Struct for WithdrawAndSwap base parameters
/// @param s_withdrawAsset Mapping for curvePool to their desired withdraw asset
/// @param s_assetConfigs Mapping asset to its config
function withdrawAndSwap(
WithdrawAndSwapParams memory params,
mapping(address curvePool => address withdrawAsset) storage s_withdrawAsset,
mapping(address asset => AssetConfig config) storage s_assetConfigs
) public returns (bool) {
ICurveTwocryptoOptimized curveStableSwapPool = ICurveTwocryptoOptimized(params.withdrawTarget);
/// check if the price has been manipulated
_checkPriceTwoCryptoSwapPoolDeviation(curveStableSwapPool, params.maxDeviation);
address withdrawAsset = s_withdrawAsset[address(curveStableSwapPool)];
uint256 curvePoolCoinIdx = _getAssetIdxInCurveTwoCryptoSwapPool(curveStableSwapPool, withdrawAsset);
uint256 withdrawTargetDecimals = IERC20Metadata(params.withdrawTarget).decimals();
uint256 withdrawAssetDecimals = IERC20Metadata(withdrawAsset).decimals();
/// @dev Withdraw asset must have Curve Pool with the baseAsset
if (withdrawAsset != params.baseAsset && params.withdrawAmount != type(uint256).max) {
if (s_assetConfigs[withdrawAsset].id == 0) {
params.withdrawAmount = _getCurvePoolExpectedAmountIn(
CurvePoolExpectationParams({
poolAddress: s_assetConfigs[withdrawAsset].curveSwapPool,
assetIn: withdrawAsset,
assetOut: params.baseAsset,
amount: params.withdrawAmount,
maxDeviation: params.maxDeviation
})
);
}
if (s_assetConfigs[withdrawAsset].id == 1) {
params.withdrawAmount = _getCurveSwapPoolExpectedAmountIn(
CurvePoolExpectationParams({
poolAddress: s_assetConfigs[withdrawAsset].curveSwapPool,
assetIn: withdrawAsset,
assetOut: params.baseAsset,
amount: params.withdrawAmount,
maxDeviation: params.maxDeviation
})
);
}
}
uint256 sharePrice =
curveStableSwapPool.calc_withdraw_one_coin(10 ** (withdrawTargetDecimals), curvePoolCoinIdx);
uint256 burnAmt = params.withdrawAmount == type(uint256).max
? IERC20Metadata(params.withdrawTarget).balanceOf(address(this))
: (params.withdrawAmount * 10 ** (withdrawTargetDecimals) / sharePrice) * params.extraMargin / 1 ether;
if (burnAmt > ICurveTwocryptoOptimized(params.withdrawTarget).balanceOf(address(this))) {
burnAmt = ICurveTwocryptoOptimized(params.withdrawTarget).balanceOf(address(this));
}
uint256 minReceivedShares = withdrawTargetDecimals > withdrawAssetDecimals
? burnAmt / 10 ** (withdrawTargetDecimals - withdrawAssetDecimals) * s_assetConfigs[withdrawAsset].slippage
/ 1 ether
: burnAmt * 10 ** (withdrawAssetDecimals - withdrawTargetDecimals) * s_assetConfigs[withdrawAsset].slippage
/ 1 ether;
uint256 receivedAmount;
receivedAmount = curveStableSwapPool.remove_liquidity_one_coin(
burnAmt, curvePoolCoinIdx, curveStableSwapPool.calc_withdraw_one_coin(minReceivedShares, curvePoolCoinIdx)
);
if (withdrawAsset != address(params.baseAsset)) {
receivedAmount = _swapToBaseAsset(
SwapToBaseAssetParams({
asset: withdrawAsset,
baseAsset: address(params.baseAsset),
maxDeviation: params.maxDeviation
}),
s_assetConfigs
);
}
return params.withdrawAmount <= receivedAmount;
}
/// @notice Function to convert lp token to base asset token value
/// @param withdrawTarget Withdraw target address
/// @param withdrawAsset Withdraw asset address
/// @param baseAsset Base asset address
/// @param maxDeviation Max deviation threshold
/// @param s_assetConfigs Mapping asset to its config
/// @return uint256 Withdraw asset in base asset value
function convertToBaseAsset(
address withdrawTarget,
address withdrawAsset,
address baseAsset,
uint256 maxDeviation,
mapping(address asset => AssetConfig config) storage s_assetConfigs
) public view returns (uint256) {
ICurveTwocryptoOptimized curveSwapPool = ICurveTwocryptoOptimized(withdrawTarget);
/// check if the price has been manipulated
_checkPriceTwoCryptoSwapPoolDeviation(curveSwapPool, maxDeviation);
if (ICurveTwocryptoOptimized(withdrawTarget).balanceOf(address(this)) == 0) {
return 0;
}
if (withdrawAsset != baseAsset) {
if (s_assetConfigs[withdrawAsset].id == 0) {
return _getCurveStableSwapPoolExpectedAmountOut(
CurvePoolExpectationParams({
poolAddress: s_assetConfigs[withdrawAsset].curveSwapPool,
assetIn: withdrawAsset,
assetOut: address(baseAsset),
amount: curveSwapPool.calc_withdraw_one_coin(
ICurveTwocryptoOptimized(withdrawTarget).balanceOf(address(this)),
_getAssetIdxInCurveTwoCryptoSwapPool(curveSwapPool, withdrawAsset)
),
maxDeviation: maxDeviation
})
);
}
if (s_assetConfigs[withdrawAsset].id == 1) {
return _getCurveTwoCryptoSwapPoolExpectedAmountOut(
CurvePoolExpectationParams({
poolAddress: s_assetConfigs[withdrawAsset].curveSwapPool,
assetIn: withdrawAsset,
assetOut: address(baseAsset),
amount: curveSwapPool.calc_withdraw_one_coin(
ICurveTwocryptoOptimized(withdrawTarget).balanceOf(address(this)),
_getAssetIdxInCurveTwoCryptoSwapPool(curveSwapPool, withdrawAsset)
),
maxDeviation: maxDeviation
})
);
}
}
return curveSwapPool.calc_withdraw_one_coin(
ICurveTwocryptoOptimized(withdrawTarget).balanceOf(address(this)),
_getAssetIdxInCurveTwoCryptoSwapPool(curveSwapPool, address(baseAsset))
);
}
/// @notice Function to swap asset to base asset
/// @param params Struct for functions base parameters
/// @param s_assetConfigs Mapping asset to its config
function _swapToBaseAsset(
SwapToBaseAssetParams memory params,
mapping(address asset => AssetConfig config) storage s_assetConfigs
) internal returns (uint256) {
uint256 assetBalance = IERC20Metadata(params.asset).balanceOf(address(this));
if (assetBalance > 0) {
uint256 slippage = s_assetConfigs[params.asset].slippage;
if (s_assetConfigs[params.asset].id == 0) {
uint256 assetOutExpected = _getCurveStableSwapPoolExpectedAmountOut(
CurvePoolExpectationParams({
poolAddress: s_assetConfigs[params.asset].curveSwapPool,
assetIn: params.asset,
assetOut: params.baseAsset,
amount: assetBalance,
maxDeviation: params.maxDeviation
})
);
ICurveStableSwapNG curvePool = ICurveStableSwapNG(s_assetConfigs[params.asset].curveSwapPool);
return curvePool.exchange(
int128(uint128(_getAssetIdxInCurveStableSwapPool(curvePool, params.asset))),
int128(uint128(_getAssetIdxInCurveStableSwapPool(curvePool, params.baseAsset))),
assetBalance,
assetOutExpected * slippage / 1 ether - (assetOutExpected * s_assetConfigs[params.asset].fee / 1e10)
);
}
if (s_assetConfigs[params.asset].id == 1) {
uint256 assetOutExpected = _getCurveTwoCryptoSwapPoolExpectedAmountOut(
CurvePoolExpectationParams({
poolAddress: s_assetConfigs[params.asset].curveSwapPool,
assetIn: params.asset,
assetOut: params.baseAsset,
amount: assetBalance,
maxDeviation: params.maxDeviation
})
);
ICurveTwocryptoOptimized curvePool =
ICurveTwocryptoOptimized(s_assetConfigs[params.asset].curveSwapPool);
return curvePool.exchange(
_getAssetIdxInCurveTwoCryptoSwapPool(curvePool, params.asset),
_getAssetIdxInCurveTwoCryptoSwapPool(curvePool, params.baseAsset),
assetBalance,
assetOutExpected * slippage / 1 ether - (assetOutExpected * s_assetConfigs[params.asset].fee / 1e10)
);
}
}
return 0;
}
/// @notice Fetches the index of the asset inside the curve stable pool
/// @param curveStableSwapPool The curve stable swap pool
/// @param asset The asset to query
/// @return uint256 The index of the asset
function _getAssetIdxInCurveStableSwapPool(ICurveStableSwapNG curveStableSwapPool, address asset)
internal
view
returns (uint256)
{
uint256 numCoins = curveStableSwapPool.N_COINS();
for (uint256 i; i < numCoins; ++i) {
address assetAtIdx = curveStableSwapPool.coins(i);
if (assetAtIdx == asset) return i;
}
revert AssetNotFound(asset);
}
/// @notice Fetches the index of the asset inside the curve stable pool
/// @param curveStableSwapPool The curve stable swap pool
/// @param asset The asset to query
/// @return uint256 The index of the asset
function _getAssetIdxInCurveTwoCryptoSwapPool(ICurveTwocryptoOptimized curveStableSwapPool, address asset)
internal
view
returns (uint256)
{
for (uint256 i; i < 2; ++i) {
address assetAtIdx = curveStableSwapPool.coins(i);
if (assetAtIdx == asset) return i;
}
revert AssetNotFound(asset);
}
/// @notice Function to check price deviation between curve pool last_price and price_oracle.
/// @notice This function prevent sudden price action which can lead to LP token price manipulation
/// @param curvePool curve pool interface
/// @param maxDeviation Max deviation threshold
function _checkStableSwapPoolPriceDeviation(ICurveStableSwapNG curvePool, uint256 maxDeviation) internal view {
uint256 lastPrice = curvePool.last_price(0);
uint256 oraclePrice = curvePool.price_oracle(0);
uint256 deviation = lastPrice > oraclePrice ? lastPrice - oraclePrice : oraclePrice - lastPrice;
/// revert when deviation between lastPrice and oraclePrice is > than 1%
if ((deviation * 1 ether / oraclePrice) > maxDeviation) {
revert PriceDeviationTooHigh();
}
}
/// @notice Function to check price deviation between curve pool last_price and price_oracle.
/// @notice This function prevent sudden price action which can lead to LP token price manipulation
/// @param curvePool Curve pool interface
/// @param maxDeviation Max deviation threshold
function _checkPriceTwoCryptoSwapPoolDeviation(ICurveTwocryptoOptimized curvePool, uint256 maxDeviation)
internal
view
{
uint256 lastPrice = curvePool.last_prices();
uint256 oraclePrice = curvePool.price_oracle();
uint256 deviation = lastPrice > oraclePrice ? lastPrice - oraclePrice : oraclePrice - lastPrice;
/// revert when deviation between lastPrice and oraclePrice is > than 1%
if ((deviation * 1 ether / oraclePrice) > maxDeviation) {
revert PriceDeviationTooHigh();
}
}
/// @notice Function to get expected amount in for the swap
/// @param params Struct for functions base parameter
/// @return uint256 Expected amount in for doing exchange on the curve pool
function _getCurvePoolExpectedAmountIn(CurvePoolExpectationParams memory params) internal view returns (uint256) {
ICurveStableSwapNG curvePool = ICurveStableSwapNG(params.poolAddress);
_checkStableSwapPoolPriceDeviation(curvePool, params.maxDeviation);
return curvePool.get_dx(
int128(uint128(_getAssetIdxInCurveStableSwapPool(curvePool, params.assetIn))),
int128(uint128(_getAssetIdxInCurveStableSwapPool(curvePool, params.assetOut))),
params.amount
);
}
/// @notice Function to get expected amount in for the swap
/// @param params Struct for functions base parameter
/// @return uint256 Expected amount in for doing exchange on the curve pool
function _getCurveSwapPoolExpectedAmountIn(CurvePoolExpectationParams memory params)
internal
view
returns (uint256)
{
ICurveTwocryptoOptimized curvePool = ICurveTwocryptoOptimized(params.poolAddress);
_checkPriceTwoCryptoSwapPoolDeviation(curvePool, params.maxDeviation);
return curvePool.get_dx(
_getAssetIdxInCurveTwoCryptoSwapPool(curvePool, params.assetIn),
_getAssetIdxInCurveTwoCryptoSwapPool(curvePool, params.assetOut),
params.amount
);
}
/// @notice Function to get expected amount out after doing a swap
/// @param params Struct for functions base parameter
/// @return uint256 Expected amount out for doing exchange on the curve pool
function _getCurveStableSwapPoolExpectedAmountOut(CurvePoolExpectationParams memory params)
internal
view
returns (uint256)
{
ICurveStableSwapNG curvePool = ICurveStableSwapNG(params.poolAddress);
_checkStableSwapPoolPriceDeviation(curvePool, params.maxDeviation);
return curvePool.get_dy(
int128(uint128(_getAssetIdxInCurveStableSwapPool(curvePool, params.assetIn))),
int128(uint128(_getAssetIdxInCurveStableSwapPool(curvePool, params.assetOut))),
params.amount
);
}
/// @notice Function to get expected amount in for the swap
/// @param params Struct for functions base parameter
/// @return uint256 Expected amount in for doing exchange on the curve pool
function _getCurveTwoCryptoSwapPoolExpectedAmountOut(CurvePoolExpectationParams memory params)
internal
view
returns (uint256)
{
ICurveTwocryptoOptimized curvePool = ICurveTwocryptoOptimized(params.poolAddress);
_checkPriceTwoCryptoSwapPoolDeviation(curvePool, params.maxDeviation);
return curvePool.get_dy(
_getAssetIdxInCurveTwoCryptoSwapPool(curvePool, params.assetIn),
_getAssetIdxInCurveTwoCryptoSwapPool(curvePool, params.assetOut),
params.amount
);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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: UNLICENSED
pragma solidity 0.8.19;
import {LiquidityWarehouseAccessControl} from "../utils/LiquidityWarehouseAccessControl.sol";
import {IERC20} from "openzeppelin/token/ERC20/IERC20.sol";
interface ILiquidityWarehouse {
/// @notice The data for an asset
struct Asset {
/// @notice The lender's total balance
uint216 lenderBalance;
/// @notice The last time the asset's lender balance was updated with interest
uint40 interestLastUpdatedAt;
}
/// @notice The terms of the liquidity warehouse
struct Terms {
/// @notice The asset the loans in the liquidity
/// warehouse is denominated in
IERC20 asset;
/// @notice The address that will receive fees
address feeRecipient;
/// @notice The liquidation threshold of the liquidity warehouse
uint64 liquidationThreshold;
/// @notice The capacity threshold of the liquidity warehouse
uint64 capacityThreshold;
/// @notice The interest rate of the liquidity warehouse
uint64 interestRate;
/// @notice The fee taken from compounded interest of the liquidity warehouse
uint64 interestFee;
/// @notice The fee taken from withdrawals
uint64 withdrawalFee;
}
//################//
// Errors //
//################//
/// @notice This error is thrown when an address attempts to execute
/// a transaction that it does not have permissions for
error AccessForbidden();
/// @notice This error is thrown when the liquidity warehouse is active
error Active();
/// @notice This error is thrown whenever the amount of shares minted
/// from a deposit is zero
error ZeroShareAmt();
/// @notice This error is thrown when the liquidity warehouse is inactive
error Inactive();
/// @notice This error is thrown when there is insufficient liquidity in all
/// whitelisted targets to cover a withdrawal
/// @param missingAmount The missing amount of liquidity
error InsufficientLiquidity(uint256 missingAmount);
/// @notice This error is thrown when the zero address
/// is passed in as the asset's address
error InvalidAsset();
/// @notice This error is thrown when the wrapped native token
/// address is zero
error InvalidWrappedNativeToken();
/// @notice This error is thrown when there is an insufficient
/// amount of assets that can be withdrawn
error InsufficientBalance();
/// @notice This error is thrown when the liquidation threshold
/// is set to 0
error InvalidLiquidationThreshold();
/// @notice This error is thrown when the capacity threshold
/// is set to 0
error InvalidCapacityThreshold();
/// @notice This error is thrown when the fee recipient is set
/// to the zero address
error InvalidFeeRecipient();
/// @notice This error is thrown when the capacity threshold is
/// breached
error CapacityThresholdBreached();
/// @notice This error is thrown when the liquidation threshold
/// is breached
error LiquidationThresholdBreached();
/// @notice This error is thrown when the liquidation threshold
/// is not breached
error LiquidationThresholdNotBreached();
//################//
// Events //
//################//
/// @notice This event is emitted when the is active flag is
/// set
/// @param isActive True if the liquidity warehouse has been
/// set to active
event IsActiveSet(bool isActive);
/// @notice This event is emitted when an asset is deposited
/// @param depositAmount The amount of assets that was deposited
/// @param isBorrower True if deposited into the borrower pool
event AssetDeposited(uint256 depositAmount, bool isBorrower);
/// @notice This event is emitted when an asset is withdrawn
/// @param withdrawAmount The amount of assets that was withdrawn
/// @param isBorrower True if withdrawn into the borrower pool
event AssetWithdrawn(uint256 withdrawAmount, bool isBorrower);
/// @notice This event is emitted when the liquidation threshold is set
/// @param oldLiquidationThreshold The old liquidation threshold
/// @param newLiquidationThreshold The new liquidation threshold
event LiquidationThresholdSet(uint256 oldLiquidationThreshold, uint256 newLiquidationThreshold);
/// @notice This event is emitted when the capacity threshold is set
/// @param oldCapacityThreshold The old capacity threshold
/// @param newCapacityThreshold The new capacity threshold
event CapacityThresholdSet(uint256 oldCapacityThreshold, uint256 newCapacityThreshold);
/// @notice This event is emitted when the interest rate is set
/// @param oldInterestRate The old interest rate
/// @param newInterestRate The new interest rate
event InterestRateSet(uint256 oldInterestRate, uint256 newInterestRate);
/// @notice This event is emitted when the interest fee is set
/// @param oldFee The old interest fee
/// @param newFee The new interest fee
event InterestFeeSet(uint256 oldFee, uint256 newFee);
/// @notice This event is emitted when the withdrawal fee is set
/// @param oldFee The old withdrawal fee
/// @param newFee The new withdrawal fee
event WithdrawalFeeSet(uint256 oldFee, uint256 newFee);
/// @notice This event is emitted when the fee recipient is set
/// @param oldFeeRecipient The old fee recipient
/// @param newFeeRecipient The new fee recipient
event FeeRecipientSet(address indexed oldFeeRecipient, address indexed newFeeRecipient);
/// @notice This event is emitted when the liquidity warehouse is activated
event Activated();
/// @notice This event is emitted when the liquidity warehouse is deactivated
event Deactivated();
//################//
// Write //
//################//
/// @notice Deactivates pool
/// @param withdrawTargets The list of targets to withdraw liquidity from
/// @param data Arbitrary data that can be used when withdrawing
function deactivate(address[] calldata withdrawTargets, bytes calldata data) external;
/// @notice Activates pool
function activate() external;
/// @notice Withdraws from all whitelisted pools
/// @param withdrawTargets The list of targets to withdraw liquidity from
/// @param data Arbitrary data that can be used when withdrawing
function liquidate(address[] calldata withdrawTargets, bytes calldata data) external;
/// @notice Deposits ERC20 tokens as a lender
/// @param depositedAmount The amount of assets to deposit
function depositLender(uint256 depositedAmount) external;
/// @notice Deposits ERC20 tokens as a borrower
/// @param depositedAmount The amount of assets to deposit
function depositBorrower(uint256 depositedAmount) external;
/// @notice Withdraws ERC20 tokens as a lender
/// @param shareAmount The amount of shares to burn
/// @param data Arbitrary data that can be used by the underlying implementation
function withdrawLender(uint256 shareAmount, bytes calldata data) external;
/// @notice Withdraws lender fees
/// there is insufficient liquidity in the warehouse
/// @param data Arbitrary data that can be used by the underlying implementation
function withdrawLenderFees(bytes calldata data) external;
/// @notice Withdraws ERC20 tokens as a borrower
/// @param shareAmount The amount of shares to burn
/// @param data Arbitrary data that can be used by the underlying implementation
function withdrawBorrower(uint256 shareAmount, bytes calldata data) external;
/// @notice Withdraws lender fees
/// @param data Arbitrary data that can be used by the underlying implementation
function withdrawBorrowerFees(bytes calldata data) external;
/// @notice Updates the liquidation threshold
/// @param liquidationThreshold The new liquidation threshold
function setLiquidationThreshold(uint256 liquidationThreshold) external;
/// @notice Updates the capacity threshold
/// @param capacityThreshold The new capacity threshold
function setCapacityThreshold(uint256 capacityThreshold) external;
/// @notice Updates the fees taken from interest
/// @param fee The new fee taken from interest
function setInterestFee(uint256 fee) external;
/// @notice Updates the fee taken from withdrawals
/// @param fee The new withdrawal fee
function setWithdrawalFee(uint256 fee) external;
/// @notice Updates the fee recipient
/// @param feeRecipient The new fee recipient
function setFeeRecipient(address feeRecipient) external;
/// @notice Updates the interest rate
/// @param interestRate The new interest rate
function setInterestRate(uint256 interestRate) external;
/// @notice Toggles a set of actions to either whitelist or unwhitelist them
/// @param actions The set of actions to toggle whitelisting for
function toggleWhitelist(LiquidityWarehouseAccessControl.Action[] calldata actions) external;
/// @notice Executes a set of actions as the liquidity warehouse
/// @param executeActions The set of actions to execute
/// @param data Arbitrary data to be used in the execute transaction
function execute(LiquidityWarehouseAccessControl.ExecuteAction[] calldata executeActions, bytes calldata data)
external
payable;
//#############//
// Read //
//##############//
/// @notice Returns true if an action is callable by a caller at a target
/// @param target The target being called
/// @param caller The caller calling the action on the target
/// @param fnSelector The action's function selector
/// @return bool True if the caller is able to call the function at the target
function isWhitelisted(address target, address caller, bytes4 fnSelector) external view returns (bool);
/// @notice Converts an asset amount to shares
/// @param isBorrower True if converting borrower assets
/// @param assetAmount The amount of assets to convert
/// @return uint256 The amount of shares
function convertToShares(bool isBorrower, uint256 assetAmount) external view returns (uint256);
/// @notice Converts a share amount to asset amount
/// @param isBorrower True if converting borrower shares
/// @param shareAmount The amount of shares to convert
/// @return uint256 The amount of assets
function convertToAssets(bool isBorrower, uint256 shareAmount) external view returns (uint256);
/// @notice Fetches the lender balance for an asset
/// @return uint256 The lender balance
function getLenderBalance() external view returns (uint256);
/// @notice Fetches the lender withdrawable amount
/// @return uint256 The lender withdrawable amount
function getLenderNetAssetValue() external view returns (uint256);
/// @notice Fetches the borrower withdrawable amount
/// @return uint256 The borrower withdrawable amount
function getBorrowerNetAssetValue() external view returns (uint256);
/// @notice The current terms for the liquidity warehouse
/// @return Terms The current liquidity warehouse terms
function getTerms() external view returns (Terms memory);
/// @notice Fetches the current net asset value of an asset
/// @return uint256 The net asset value of the asset
function getNetAssetValue() external view returns (uint256);
/// @notice Determines if the liquidation threshold is fulfilled
/// @return bool True if the liquidation threshold is fulfilled
function isLiquidationThresholdFulfilled() external view returns (bool);
/// @notice Determines if the capacity threshold is fulfilled
/// @return bool True if the capacity threshold is fulfilled
function isCapacityThresholdFulfilled() external view returns (bool);
/// @notice Retrieves the list of addresses that the warehouse can withdraw from
/// @return address[] The list of addresses that the warehouse can withdraw from
function getWithdrawTargets() external view returns (address[] memory);
/// @notice Returns whether or not the liquidity warehouse is paused
/// @return bool True if the liquidity warehouse is paused
function isPaused() external view returns (bool);
/// @notice Returns whether or not the liquidity warehouse is active
/// @return bool True if the liquidity warehouse is active
function isActive() external view returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC1155/extensions/ERC1155Supply.sol)
pragma solidity ^0.8.0;
import "../ERC1155.sol";
/**
* @dev Extension of ERC1155 that adds tracking of total supply per id.
*
* Useful for scenarios where Fungible and Non-fungible tokens have to be
* clearly identified. Note: While a totalSupply of 1 might mean the
* corresponding is an NFT, there is no guarantees that no other token with the
* same id are not going to be minted.
*/
abstract contract ERC1155Supply is ERC1155 {
mapping(uint256 => uint256) private _totalSupply;
/**
* @dev Total amount of tokens in with a given id.
*/
function totalSupply(uint256 id) public view virtual returns (uint256) {
return _totalSupply[id];
}
/**
* @dev Indicates whether any token exist with a given id, or not.
*/
function exists(uint256 id) public view virtual returns (bool) {
return ERC1155Supply.totalSupply(id) > 0;
}
/**
* @dev See {ERC1155-_beforeTokenTransfer}.
*/
function _beforeTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual override {
super._beforeTokenTransfer(operator, from, to, ids, amounts, data);
if (from == address(0)) {
for (uint256 i = 0; i < ids.length; ++i) {
_totalSupply[ids[i]] += amounts[i];
}
}
if (to == address(0)) {
for (uint256 i = 0; i < ids.length; ++i) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 supply = _totalSupply[id];
require(supply >= amount, "ERC1155: burn amount exceeds totalSupply");
unchecked {
_totalSupply[id] = supply - amount;
}
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC1155/ERC1155.sol)
pragma solidity ^0.8.0;
import "./IERC1155.sol";
import "./IERC1155Receiver.sol";
import "./extensions/IERC1155MetadataURI.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of the basic standard multi-token.
* See https://eips.ethereum.org/EIPS/eip-1155
* Originally based on code by Enjin: https://github.com/enjin/erc-1155
*
* _Available since v3.1._
*/
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {
using Address for address;
// Mapping from token ID to account balances
mapping(uint256 => mapping(address => uint256)) private _balances;
// Mapping from account to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
// Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json
string private _uri;
/**
* @dev See {_setURI}.
*/
constructor(string memory uri_) {
_setURI(uri_);
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC1155).interfaceId ||
interfaceId == type(IERC1155MetadataURI).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC1155MetadataURI-uri}.
*
* This implementation returns the same URI for *all* token types. It relies
* on the token type ID substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* Clients calling this function must replace the `\{id\}` substring with the
* actual token type ID.
*/
function uri(uint256) public view virtual override returns (string memory) {
return _uri;
}
/**
* @dev See {IERC1155-balanceOf}.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {
require(account != address(0), "ERC1155: address zero is not a valid owner");
return _balances[id][account];
}
/**
* @dev See {IERC1155-balanceOfBatch}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(
address[] memory accounts,
uint256[] memory ids
) public view virtual override returns (uint256[] memory) {
require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch");
uint256[] memory batchBalances = new uint256[](accounts.length);
for (uint256 i = 0; i < accounts.length; ++i) {
batchBalances[i] = balanceOf(accounts[i], ids[i]);
}
return batchBalances;
}
/**
* @dev See {IERC1155-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC1155-isApprovedForAll}.
*/
function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {
return _operatorApprovals[account][operator];
}
/**
* @dev See {IERC1155-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) public virtual override {
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: caller is not token owner or approved"
);
_safeTransferFrom(from, to, id, amount, data);
}
/**
* @dev See {IERC1155-safeBatchTransferFrom}.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) public virtual override {
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: caller is not token owner or approved"
);
_safeBatchTransferFrom(from, to, ids, amounts, data);
}
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function _safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) internal virtual {
require(to != address(0), "ERC1155: transfer to the zero address");
address operator = _msgSender();
uint256[] memory ids = _asSingletonArray(id);
uint256[] memory amounts = _asSingletonArray(amount);
_beforeTokenTransfer(operator, from, to, ids, amounts, data);
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
unchecked {
_balances[id][from] = fromBalance - amount;
}
_balances[id][to] += amount;
emit TransferSingle(operator, from, to, id, amount);
_afterTokenTransfer(operator, from, to, ids, amounts, data);
_doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function _safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
require(to != address(0), "ERC1155: transfer to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, ids, amounts, data);
for (uint256 i = 0; i < ids.length; ++i) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
unchecked {
_balances[id][from] = fromBalance - amount;
}
_balances[id][to] += amount;
}
emit TransferBatch(operator, from, to, ids, amounts);
_afterTokenTransfer(operator, from, to, ids, amounts, data);
_doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
}
/**
* @dev Sets a new URI for all token types, by relying on the token type ID
* substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* By this mechanism, any occurrence of the `\{id\}` substring in either the
* URI or any of the amounts in the JSON file at said URI will be replaced by
* clients with the token type ID.
*
* For example, the `https://token-cdn-domain/\{id\}.json` URI would be
* interpreted by clients as
* `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
* for token type ID 0x4cce0.
*
* See {uri}.
*
* Because these URIs cannot be meaningfully represented by the {URI} event,
* this function emits no events.
*/
function _setURI(string memory newuri) internal virtual {
_uri = newuri;
}
/**
* @dev Creates `amount` tokens of token type `id`, and assigns them to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function _mint(address to, uint256 id, uint256 amount, bytes memory data) internal virtual {
require(to != address(0), "ERC1155: mint to the zero address");
address operator = _msgSender();
uint256[] memory ids = _asSingletonArray(id);
uint256[] memory amounts = _asSingletonArray(amount);
_beforeTokenTransfer(operator, address(0), to, ids, amounts, data);
_balances[id][to] += amount;
emit TransferSingle(operator, address(0), to, id, amount);
_afterTokenTransfer(operator, address(0), to, ids, amounts, data);
_doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function _mintBatch(
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {
require(to != address(0), "ERC1155: mint to the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), to, ids, amounts, data);
for (uint256 i = 0; i < ids.length; i++) {
_balances[ids[i]][to] += amounts[i];
}
emit TransferBatch(operator, address(0), to, ids, amounts);
_afterTokenTransfer(operator, address(0), to, ids, amounts, data);
_doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
}
/**
* @dev Destroys `amount` tokens of token type `id` from `from`
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `from` must have at least `amount` tokens of token type `id`.
*/
function _burn(address from, uint256 id, uint256 amount) internal virtual {
require(from != address(0), "ERC1155: burn from the zero address");
address operator = _msgSender();
uint256[] memory ids = _asSingletonArray(id);
uint256[] memory amounts = _asSingletonArray(amount);
_beforeTokenTransfer(operator, from, address(0), ids, amounts, "");
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
unchecked {
_balances[id][from] = fromBalance - amount;
}
emit TransferSingle(operator, from, address(0), id, amount);
_afterTokenTransfer(operator, from, address(0), ids, amounts, "");
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
*/
function _burnBatch(address from, uint256[] memory ids, uint256[] memory amounts) internal virtual {
require(from != address(0), "ERC1155: burn from the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, address(0), ids, amounts, "");
for (uint256 i = 0; i < ids.length; i++) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
unchecked {
_balances[id][from] = fromBalance - amount;
}
}
emit TransferBatch(operator, from, address(0), ids, amounts);
_afterTokenTransfer(operator, from, address(0), ids, amounts, "");
}
/**
* @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, "ERC1155: setting approval status for self");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning, as well as batched variants.
*
* The same hook is called on both single and batched variants. For single
* transfers, the length of the `ids` and `amounts` arrays will be 1.
*
* Calling conditions (for each `id` and `amount` pair):
*
* - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* of token type `id` will be transferred to `to`.
* - When `from` is zero, `amount` tokens of token type `id` will be minted
* for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
* will be burned.
* - `from` and `to` are never both zero.
* - `ids` and `amounts` have the same, non-zero length.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {}
/**
* @dev Hook that is called after any token transfer. This includes minting
* and burning, as well as batched variants.
*
* The same hook is called on both single and batched variants. For single
* transfers, the length of the `id` and `amount` arrays will be 1.
*
* Calling conditions (for each `id` and `amount` pair):
*
* - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* of token type `id` will be transferred to `to`.
* - When `from` is zero, `amount` tokens of token type `id` will be minted
* for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
* will be burned.
* - `from` and `to` are never both zero.
* - `ids` and `amounts` have the same, non-zero length.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {}
function _doSafeTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) private {
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
if (response != IERC1155Receiver.onERC1155Received.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non-ERC1155Receiver implementer");
}
}
}
function _doSafeBatchTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) private {
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
bytes4 response
) {
if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non-ERC1155Receiver implementer");
}
}
}
function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {
uint256[] memory array = new uint256[](1);
array[0] = element;
return array;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/structs/EnumerableSet.sol)
// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.
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.
*
* ```solidity
* 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) {
bytes32[] memory store = _values(set._inner);
bytes32[] memory result;
/// @solidity memory-safe-assembly
assembly {
result := store
}
return result;
}
// 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 in 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 v4.8.0) (utils/math/SafeCast.sol)
// This file was procedurally generated from scripts/generate/templates/SafeCast.js.
pragma solidity ^0.8.0;
/**
* @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
* checks.
*
* Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
* easily result in undesired exploitation or bugs, since developers usually
* assume that overflows raise errors. `SafeCast` restores this intuition by
* reverting the transaction when such an operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*
* Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
* all math on `uint256` and `int256` and then downcasting.
*/
library SafeCast {
/**
* @dev Returns the downcasted uint248 from uint256, reverting on
* overflow (when the input is greater than largest uint248).
*
* Counterpart to Solidity's `uint248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*
* _Available since v4.7._
*/
function toUint248(uint256 value) internal pure returns (uint248) {
require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits");
return uint248(value);
}
/**
* @dev Returns the downcasted uint240 from uint256, reverting on
* overflow (when the input is greater than largest uint240).
*
* Counterpart to Solidity's `uint240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*
* _Available since v4.7._
*/
function toUint240(uint256 value) internal pure returns (uint240) {
require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits");
return uint240(value);
}
/**
* @dev Returns the downcasted uint232 from uint256, reverting on
* overflow (when the input is greater than largest uint232).
*
* Counterpart to Solidity's `uint232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*
* _Available since v4.7._
*/
function toUint232(uint256 value) internal pure returns (uint232) {
require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits");
return uint232(value);
}
/**
* @dev Returns the downcasted uint224 from uint256, reverting on
* overflow (when the input is greater than largest uint224).
*
* Counterpart to Solidity's `uint224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*
* _Available since v4.2._
*/
function toUint224(uint256 value) internal pure returns (uint224) {
require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits");
return uint224(value);
}
/**
* @dev Returns the downcasted uint216 from uint256, reverting on
* overflow (when the input is greater than largest uint216).
*
* Counterpart to Solidity's `uint216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*
* _Available since v4.7._
*/
function toUint216(uint256 value) internal pure returns (uint216) {
require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits");
return uint216(value);
}
/**
* @dev Returns the downcasted uint208 from uint256, reverting on
* overflow (when the input is greater than largest uint208).
*
* Counterpart to Solidity's `uint208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*
* _Available since v4.7._
*/
function toUint208(uint256 value) internal pure returns (uint208) {
require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits");
return uint208(value);
}
/**
* @dev Returns the downcasted uint200 from uint256, reverting on
* overflow (when the input is greater than largest uint200).
*
* Counterpart to Solidity's `uint200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*
* _Available since v4.7._
*/
function toUint200(uint256 value) internal pure returns (uint200) {
require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits");
return uint200(value);
}
/**
* @dev Returns the downcasted uint192 from uint256, reverting on
* overflow (when the input is greater than largest uint192).
*
* Counterpart to Solidity's `uint192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*
* _Available since v4.7._
*/
function toUint192(uint256 value) internal pure returns (uint192) {
require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits");
return uint192(value);
}
/**
* @dev Returns the downcasted uint184 from uint256, reverting on
* overflow (when the input is greater than largest uint184).
*
* Counterpart to Solidity's `uint184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*
* _Available since v4.7._
*/
function toUint184(uint256 value) internal pure returns (uint184) {
require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits");
return uint184(value);
}
/**
* @dev Returns the downcasted uint176 from uint256, reverting on
* overflow (when the input is greater than largest uint176).
*
* Counterpart to Solidity's `uint176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*
* _Available since v4.7._
*/
function toUint176(uint256 value) internal pure returns (uint176) {
require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits");
return uint176(value);
}
/**
* @dev Returns the downcasted uint168 from uint256, reverting on
* overflow (when the input is greater than largest uint168).
*
* Counterpart to Solidity's `uint168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*
* _Available since v4.7._
*/
function toUint168(uint256 value) internal pure returns (uint168) {
require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits");
return uint168(value);
}
/**
* @dev Returns the downcasted uint160 from uint256, reverting on
* overflow (when the input is greater than largest uint160).
*
* Counterpart to Solidity's `uint160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*
* _Available since v4.7._
*/
function toUint160(uint256 value) internal pure returns (uint160) {
require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits");
return uint160(value);
}
/**
* @dev Returns the downcasted uint152 from uint256, reverting on
* overflow (when the input is greater than largest uint152).
*
* Counterpart to Solidity's `uint152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*
* _Available since v4.7._
*/
function toUint152(uint256 value) internal pure returns (uint152) {
require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits");
return uint152(value);
}
/**
* @dev Returns the downcasted uint144 from uint256, reverting on
* overflow (when the input is greater than largest uint144).
*
* Counterpart to Solidity's `uint144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*
* _Available since v4.7._
*/
function toUint144(uint256 value) internal pure returns (uint144) {
require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits");
return uint144(value);
}
/**
* @dev Returns the downcasted uint136 from uint256, reverting on
* overflow (when the input is greater than largest uint136).
*
* Counterpart to Solidity's `uint136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*
* _Available since v4.7._
*/
function toUint136(uint256 value) internal pure returns (uint136) {
require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits");
return uint136(value);
}
/**
* @dev Returns the downcasted uint128 from uint256, reverting on
* overflow (when the input is greater than largest uint128).
*
* Counterpart to Solidity's `uint128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*
* _Available since v2.5._
*/
function toUint128(uint256 value) internal pure returns (uint128) {
require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits");
return uint128(value);
}
/**
* @dev Returns the downcasted uint120 from uint256, reverting on
* overflow (when the input is greater than largest uint120).
*
* Counterpart to Solidity's `uint120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*
* _Available since v4.7._
*/
function toUint120(uint256 value) internal pure returns (uint120) {
require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits");
return uint120(value);
}
/**
* @dev Returns the downcasted uint112 from uint256, reverting on
* overflow (when the input is greater than largest uint112).
*
* Counterpart to Solidity's `uint112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*
* _Available since v4.7._
*/
function toUint112(uint256 value) internal pure returns (uint112) {
require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits");
return uint112(value);
}
/**
* @dev Returns the downcasted uint104 from uint256, reverting on
* overflow (when the input is greater than largest uint104).
*
* Counterpart to Solidity's `uint104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*
* _Available since v4.7._
*/
function toUint104(uint256 value) internal pure returns (uint104) {
require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits");
return uint104(value);
}
/**
* @dev Returns the downcasted uint96 from uint256, reverting on
* overflow (when the input is greater than largest uint96).
*
* Counterpart to Solidity's `uint96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*
* _Available since v4.2._
*/
function toUint96(uint256 value) internal pure returns (uint96) {
require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits");
return uint96(value);
}
/**
* @dev Returns the downcasted uint88 from uint256, reverting on
* overflow (when the input is greater than largest uint88).
*
* Counterpart to Solidity's `uint88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*
* _Available since v4.7._
*/
function toUint88(uint256 value) internal pure returns (uint88) {
require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits");
return uint88(value);
}
/**
* @dev Returns the downcasted uint80 from uint256, reverting on
* overflow (when the input is greater than largest uint80).
*
* Counterpart to Solidity's `uint80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*
* _Available since v4.7._
*/
function toUint80(uint256 value) internal pure returns (uint80) {
require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits");
return uint80(value);
}
/**
* @dev Returns the downcasted uint72 from uint256, reverting on
* overflow (when the input is greater than largest uint72).
*
* Counterpart to Solidity's `uint72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*
* _Available since v4.7._
*/
function toUint72(uint256 value) internal pure returns (uint72) {
require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits");
return uint72(value);
}
/**
* @dev Returns the downcasted uint64 from uint256, reverting on
* overflow (when the input is greater than largest uint64).
*
* Counterpart to Solidity's `uint64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*
* _Available since v2.5._
*/
function toUint64(uint256 value) internal pure returns (uint64) {
require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits");
return uint64(value);
}
/**
* @dev Returns the downcasted uint56 from uint256, reverting on
* overflow (when the input is greater than largest uint56).
*
* Counterpart to Solidity's `uint56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*
* _Available since v4.7._
*/
function toUint56(uint256 value) internal pure returns (uint56) {
require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits");
return uint56(value);
}
/**
* @dev Returns the downcasted uint48 from uint256, reverting on
* overflow (when the input is greater than largest uint48).
*
* Counterpart to Solidity's `uint48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*
* _Available since v4.7._
*/
function toUint48(uint256 value) internal pure returns (uint48) {
require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits");
return uint48(value);
}
/**
* @dev Returns the downcasted uint40 from uint256, reverting on
* overflow (when the input is greater than largest uint40).
*
* Counterpart to Solidity's `uint40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*
* _Available since v4.7._
*/
function toUint40(uint256 value) internal pure returns (uint40) {
require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits");
return uint40(value);
}
/**
* @dev Returns the downcasted uint32 from uint256, reverting on
* overflow (when the input is greater than largest uint32).
*
* Counterpart to Solidity's `uint32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*
* _Available since v2.5._
*/
function toUint32(uint256 value) internal pure returns (uint32) {
require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits");
return uint32(value);
}
/**
* @dev Returns the downcasted uint24 from uint256, reverting on
* overflow (when the input is greater than largest uint24).
*
* Counterpart to Solidity's `uint24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*
* _Available since v4.7._
*/
function toUint24(uint256 value) internal pure returns (uint24) {
require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits");
return uint24(value);
}
/**
* @dev Returns the downcasted uint16 from uint256, reverting on
* overflow (when the input is greater than largest uint16).
*
* Counterpart to Solidity's `uint16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*
* _Available since v2.5._
*/
function toUint16(uint256 value) internal pure returns (uint16) {
require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits");
return uint16(value);
}
/**
* @dev Returns the downcasted uint8 from uint256, reverting on
* overflow (when the input is greater than largest uint8).
*
* Counterpart to Solidity's `uint8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*
* _Available since v2.5._
*/
function toUint8(uint256 value) internal pure returns (uint8) {
require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits");
return uint8(value);
}
/**
* @dev Converts a signed int256 into an unsigned uint256.
*
* Requirements:
*
* - input must be greater than or equal to 0.
*
* _Available since v3.0._
*/
function toUint256(int256 value) internal pure returns (uint256) {
require(value >= 0, "SafeCast: value must be positive");
return uint256(value);
}
/**
* @dev Returns the downcasted int248 from int256, reverting on
* overflow (when the input is less than smallest int248 or
* greater than largest int248).
*
* Counterpart to Solidity's `int248` operator.
*
* Requirements:
*
* - input must fit into 248 bits
*
* _Available since v4.7._
*/
function toInt248(int256 value) internal pure returns (int248 downcasted) {
downcasted = int248(value);
require(downcasted == value, "SafeCast: value doesn't fit in 248 bits");
}
/**
* @dev Returns the downcasted int240 from int256, reverting on
* overflow (when the input is less than smallest int240 or
* greater than largest int240).
*
* Counterpart to Solidity's `int240` operator.
*
* Requirements:
*
* - input must fit into 240 bits
*
* _Available since v4.7._
*/
function toInt240(int256 value) internal pure returns (int240 downcasted) {
downcasted = int240(value);
require(downcasted == value, "SafeCast: value doesn't fit in 240 bits");
}
/**
* @dev Returns the downcasted int232 from int256, reverting on
* overflow (when the input is less than smallest int232 or
* greater than largest int232).
*
* Counterpart to Solidity's `int232` operator.
*
* Requirements:
*
* - input must fit into 232 bits
*
* _Available since v4.7._
*/
function toInt232(int256 value) internal pure returns (int232 downcasted) {
downcasted = int232(value);
require(downcasted == value, "SafeCast: value doesn't fit in 232 bits");
}
/**
* @dev Returns the downcasted int224 from int256, reverting on
* overflow (when the input is less than smallest int224 or
* greater than largest int224).
*
* Counterpart to Solidity's `int224` operator.
*
* Requirements:
*
* - input must fit into 224 bits
*
* _Available since v4.7._
*/
function toInt224(int256 value) internal pure returns (int224 downcasted) {
downcasted = int224(value);
require(downcasted == value, "SafeCast: value doesn't fit in 224 bits");
}
/**
* @dev Returns the downcasted int216 from int256, reverting on
* overflow (when the input is less than smallest int216 or
* greater than largest int216).
*
* Counterpart to Solidity's `int216` operator.
*
* Requirements:
*
* - input must fit into 216 bits
*
* _Available since v4.7._
*/
function toInt216(int256 value) internal pure returns (int216 downcasted) {
downcasted = int216(value);
require(downcasted == value, "SafeCast: value doesn't fit in 216 bits");
}
/**
* @dev Returns the downcasted int208 from int256, reverting on
* overflow (when the input is less than smallest int208 or
* greater than largest int208).
*
* Counterpart to Solidity's `int208` operator.
*
* Requirements:
*
* - input must fit into 208 bits
*
* _Available since v4.7._
*/
function toInt208(int256 value) internal pure returns (int208 downcasted) {
downcasted = int208(value);
require(downcasted == value, "SafeCast: value doesn't fit in 208 bits");
}
/**
* @dev Returns the downcasted int200 from int256, reverting on
* overflow (when the input is less than smallest int200 or
* greater than largest int200).
*
* Counterpart to Solidity's `int200` operator.
*
* Requirements:
*
* - input must fit into 200 bits
*
* _Available since v4.7._
*/
function toInt200(int256 value) internal pure returns (int200 downcasted) {
downcasted = int200(value);
require(downcasted == value, "SafeCast: value doesn't fit in 200 bits");
}
/**
* @dev Returns the downcasted int192 from int256, reverting on
* overflow (when the input is less than smallest int192 or
* greater than largest int192).
*
* Counterpart to Solidity's `int192` operator.
*
* Requirements:
*
* - input must fit into 192 bits
*
* _Available since v4.7._
*/
function toInt192(int256 value) internal pure returns (int192 downcasted) {
downcasted = int192(value);
require(downcasted == value, "SafeCast: value doesn't fit in 192 bits");
}
/**
* @dev Returns the downcasted int184 from int256, reverting on
* overflow (when the input is less than smallest int184 or
* greater than largest int184).
*
* Counterpart to Solidity's `int184` operator.
*
* Requirements:
*
* - input must fit into 184 bits
*
* _Available since v4.7._
*/
function toInt184(int256 value) internal pure returns (int184 downcasted) {
downcasted = int184(value);
require(downcasted == value, "SafeCast: value doesn't fit in 184 bits");
}
/**
* @dev Returns the downcasted int176 from int256, reverting on
* overflow (when the input is less than smallest int176 or
* greater than largest int176).
*
* Counterpart to Solidity's `int176` operator.
*
* Requirements:
*
* - input must fit into 176 bits
*
* _Available since v4.7._
*/
function toInt176(int256 value) internal pure returns (int176 downcasted) {
downcasted = int176(value);
require(downcasted == value, "SafeCast: value doesn't fit in 176 bits");
}
/**
* @dev Returns the downcasted int168 from int256, reverting on
* overflow (when the input is less than smallest int168 or
* greater than largest int168).
*
* Counterpart to Solidity's `int168` operator.
*
* Requirements:
*
* - input must fit into 168 bits
*
* _Available since v4.7._
*/
function toInt168(int256 value) internal pure returns (int168 downcasted) {
downcasted = int168(value);
require(downcasted == value, "SafeCast: value doesn't fit in 168 bits");
}
/**
* @dev Returns the downcasted int160 from int256, reverting on
* overflow (when the input is less than smallest int160 or
* greater than largest int160).
*
* Counterpart to Solidity's `int160` operator.
*
* Requirements:
*
* - input must fit into 160 bits
*
* _Available since v4.7._
*/
function toInt160(int256 value) internal pure returns (int160 downcasted) {
downcasted = int160(value);
require(downcasted == value, "SafeCast: value doesn't fit in 160 bits");
}
/**
* @dev Returns the downcasted int152 from int256, reverting on
* overflow (when the input is less than smallest int152 or
* greater than largest int152).
*
* Counterpart to Solidity's `int152` operator.
*
* Requirements:
*
* - input must fit into 152 bits
*
* _Available since v4.7._
*/
function toInt152(int256 value) internal pure returns (int152 downcasted) {
downcasted = int152(value);
require(downcasted == value, "SafeCast: value doesn't fit in 152 bits");
}
/**
* @dev Returns the downcasted int144 from int256, reverting on
* overflow (when the input is less than smallest int144 or
* greater than largest int144).
*
* Counterpart to Solidity's `int144` operator.
*
* Requirements:
*
* - input must fit into 144 bits
*
* _Available since v4.7._
*/
function toInt144(int256 value) internal pure returns (int144 downcasted) {
downcasted = int144(value);
require(downcasted == value, "SafeCast: value doesn't fit in 144 bits");
}
/**
* @dev Returns the downcasted int136 from int256, reverting on
* overflow (when the input is less than smallest int136 or
* greater than largest int136).
*
* Counterpart to Solidity's `int136` operator.
*
* Requirements:
*
* - input must fit into 136 bits
*
* _Available since v4.7._
*/
function toInt136(int256 value) internal pure returns (int136 downcasted) {
downcasted = int136(value);
require(downcasted == value, "SafeCast: value doesn't fit in 136 bits");
}
/**
* @dev Returns the downcasted int128 from int256, reverting on
* overflow (when the input is less than smallest int128 or
* greater than largest int128).
*
* Counterpart to Solidity's `int128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*
* _Available since v3.1._
*/
function toInt128(int256 value) internal pure returns (int128 downcasted) {
downcasted = int128(value);
require(downcasted == value, "SafeCast: value doesn't fit in 128 bits");
}
/**
* @dev Returns the downcasted int120 from int256, reverting on
* overflow (when the input is less than smallest int120 or
* greater than largest int120).
*
* Counterpart to Solidity's `int120` operator.
*
* Requirements:
*
* - input must fit into 120 bits
*
* _Available since v4.7._
*/
function toInt120(int256 value) internal pure returns (int120 downcasted) {
downcasted = int120(value);
require(downcasted == value, "SafeCast: value doesn't fit in 120 bits");
}
/**
* @dev Returns the downcasted int112 from int256, reverting on
* overflow (when the input is less than smallest int112 or
* greater than largest int112).
*
* Counterpart to Solidity's `int112` operator.
*
* Requirements:
*
* - input must fit into 112 bits
*
* _Available since v4.7._
*/
function toInt112(int256 value) internal pure returns (int112 downcasted) {
downcasted = int112(value);
require(downcasted == value, "SafeCast: value doesn't fit in 112 bits");
}
/**
* @dev Returns the downcasted int104 from int256, reverting on
* overflow (when the input is less than smallest int104 or
* greater than largest int104).
*
* Counterpart to Solidity's `int104` operator.
*
* Requirements:
*
* - input must fit into 104 bits
*
* _Available since v4.7._
*/
function toInt104(int256 value) internal pure returns (int104 downcasted) {
downcasted = int104(value);
require(downcasted == value, "SafeCast: value doesn't fit in 104 bits");
}
/**
* @dev Returns the downcasted int96 from int256, reverting on
* overflow (when the input is less than smallest int96 or
* greater than largest int96).
*
* Counterpart to Solidity's `int96` operator.
*
* Requirements:
*
* - input must fit into 96 bits
*
* _Available since v4.7._
*/
function toInt96(int256 value) internal pure returns (int96 downcasted) {
downcasted = int96(value);
require(downcasted == value, "SafeCast: value doesn't fit in 96 bits");
}
/**
* @dev Returns the downcasted int88 from int256, reverting on
* overflow (when the input is less than smallest int88 or
* greater than largest int88).
*
* Counterpart to Solidity's `int88` operator.
*
* Requirements:
*
* - input must fit into 88 bits
*
* _Available since v4.7._
*/
function toInt88(int256 value) internal pure returns (int88 downcasted) {
downcasted = int88(value);
require(downcasted == value, "SafeCast: value doesn't fit in 88 bits");
}
/**
* @dev Returns the downcasted int80 from int256, reverting on
* overflow (when the input is less than smallest int80 or
* greater than largest int80).
*
* Counterpart to Solidity's `int80` operator.
*
* Requirements:
*
* - input must fit into 80 bits
*
* _Available since v4.7._
*/
function toInt80(int256 value) internal pure returns (int80 downcasted) {
downcasted = int80(value);
require(downcasted == value, "SafeCast: value doesn't fit in 80 bits");
}
/**
* @dev Returns the downcasted int72 from int256, reverting on
* overflow (when the input is less than smallest int72 or
* greater than largest int72).
*
* Counterpart to Solidity's `int72` operator.
*
* Requirements:
*
* - input must fit into 72 bits
*
* _Available since v4.7._
*/
function toInt72(int256 value) internal pure returns (int72 downcasted) {
downcasted = int72(value);
require(downcasted == value, "SafeCast: value doesn't fit in 72 bits");
}
/**
* @dev Returns the downcasted int64 from int256, reverting on
* overflow (when the input is less than smallest int64 or
* greater than largest int64).
*
* Counterpart to Solidity's `int64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*
* _Available since v3.1._
*/
function toInt64(int256 value) internal pure returns (int64 downcasted) {
downcasted = int64(value);
require(downcasted == value, "SafeCast: value doesn't fit in 64 bits");
}
/**
* @dev Returns the downcasted int56 from int256, reverting on
* overflow (when the input is less than smallest int56 or
* greater than largest int56).
*
* Counterpart to Solidity's `int56` operator.
*
* Requirements:
*
* - input must fit into 56 bits
*
* _Available since v4.7._
*/
function toInt56(int256 value) internal pure returns (int56 downcasted) {
downcasted = int56(value);
require(downcasted == value, "SafeCast: value doesn't fit in 56 bits");
}
/**
* @dev Returns the downcasted int48 from int256, reverting on
* overflow (when the input is less than smallest int48 or
* greater than largest int48).
*
* Counterpart to Solidity's `int48` operator.
*
* Requirements:
*
* - input must fit into 48 bits
*
* _Available since v4.7._
*/
function toInt48(int256 value) internal pure returns (int48 downcasted) {
downcasted = int48(value);
require(downcasted == value, "SafeCast: value doesn't fit in 48 bits");
}
/**
* @dev Returns the downcasted int40 from int256, reverting on
* overflow (when the input is less than smallest int40 or
* greater than largest int40).
*
* Counterpart to Solidity's `int40` operator.
*
* Requirements:
*
* - input must fit into 40 bits
*
* _Available since v4.7._
*/
function toInt40(int256 value) internal pure returns (int40 downcasted) {
downcasted = int40(value);
require(downcasted == value, "SafeCast: value doesn't fit in 40 bits");
}
/**
* @dev Returns the downcasted int32 from int256, reverting on
* overflow (when the input is less than smallest int32 or
* greater than largest int32).
*
* Counterpart to Solidity's `int32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*
* _Available since v3.1._
*/
function toInt32(int256 value) internal pure returns (int32 downcasted) {
downcasted = int32(value);
require(downcasted == value, "SafeCast: value doesn't fit in 32 bits");
}
/**
* @dev Returns the downcasted int24 from int256, reverting on
* overflow (when the input is less than smallest int24 or
* greater than largest int24).
*
* Counterpart to Solidity's `int24` operator.
*
* Requirements:
*
* - input must fit into 24 bits
*
* _Available since v4.7._
*/
function toInt24(int256 value) internal pure returns (int24 downcasted) {
downcasted = int24(value);
require(downcasted == value, "SafeCast: value doesn't fit in 24 bits");
}
/**
* @dev Returns the downcasted int16 from int256, reverting on
* overflow (when the input is less than smallest int16 or
* greater than largest int16).
*
* Counterpart to Solidity's `int16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*
* _Available since v3.1._
*/
function toInt16(int256 value) internal pure returns (int16 downcasted) {
downcasted = int16(value);
require(downcasted == value, "SafeCast: value doesn't fit in 16 bits");
}
/**
* @dev Returns the downcasted int8 from int256, reverting on
* overflow (when the input is less than smallest int8 or
* greater than largest int8).
*
* Counterpart to Solidity's `int8` operator.
*
* Requirements:
*
* - input must fit into 8 bits
*
* _Available since v3.1._
*/
function toInt8(int256 value) internal pure returns (int8 downcasted) {
downcasted = int8(value);
require(downcasted == value, "SafeCast: value doesn't fit in 8 bits");
}
/**
* @dev Converts an unsigned uint256 into a signed int256.
*
* Requirements:
*
* - input must be less than or equal to maxInt256.
*
* _Available since v3.0._
*/
function toInt256(uint256 value) internal pure returns (int256) {
// Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive
require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256");
return int256(value);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/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;
/**
* @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
/**
* @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
* calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
*/
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));
}
/**
* @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 oldAllowance = token.allowance(address(this), spender);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
}
/**
* @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
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");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
}
}
/**
* @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
* non-reverting calls are assumed to be successful. Compatible with tokens that require the approval to be set to
* 0 before setting it to a non-zero value.
*/
function forceApprove(IERC20 token, address spender, uint256 value) internal {
bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
_callOptionalReturn(token, approvalCall);
}
}
/**
* @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
* Revert on invalid signature.
*/
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");
require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation 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).
*
* This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
*/
function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
// 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 cannot use {Address-functionCall} here since this should return false
// and not revert is the subcall reverts.
(bool success, bytes memory returndata) = address(token).call(data);
return
success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
}
}// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.19;
import {EnumerableSet} from "openzeppelin/utils/structs/EnumerableSet.sol";
abstract contract LiquidityWarehouseAccessControl {
using EnumerableSet for EnumerableSet.AddressSet;
/// @notice Parameters for an action that
/// requires access control
struct Action {
/// @notice The caller of the action
address caller;
/// @notice The target of the action
address target;
/// @notice The function that the action
/// will call
bytes4 fnSelector;
/// @notice True if the action is whitelisted
bool isWhitelisted;
/// @notice True if this is the withdraw function
bool isWithdraw;
}
/// @notice Parameters for executing an action
struct ExecuteAction {
/// @notice The target address the action will call
address target;
/// @notice The action's calldata
bytes data;
/// @notice The amount of wei to send when executing
/// the action
uint256 value;
}
//################//
// Errors //
//################//
/// @notice This error is thrown whenever an invalid withdraw target is called
/// @param withdrawTarget The invalid withdraw target address
error InvalidWithdrawTarget(address withdrawTarget);
/// @notice This error is thrown whenever a caller tries to execute an action
/// that they do not have authorization to do
/// @param target The target address the action is calling
/// @param caller The address trying to execute the action
/// @param fnSelector The function the action is trying to execute
error AccessToCallForbidden(address target, address caller, bytes4 fnSelector);
/// @notice This error is thrown whenever the action being executed fails
/// @param target The target address the action is calling
/// @param caller The address trying to execute the action
/// @param fnSelector The function the action is trying to execute
error ExecutionFailed(address target, address caller, bytes4 fnSelector);
//################//
// Events //
//################//
/// @notice This event is emitted whenever an action is whitelisted or unwhitelisted
/// @param target The target address the action is calling
/// @param caller The address trying to execute the action
/// @param fnSelector The function the action is trying to execute
/// @param isWhitelisted True if the action is whitelisted
event WhitelistedActionChanged(
address indexed target, address indexed caller, bytes4 fnSelector, bool isWhitelisted
);
//###########################//
// Storage Variables //
//###########################//
/// @notice Tracks the list of whitelisted function calls
mapping(bytes32 => bool) internal s_isWhitelisted;
/// @notice Tracks the list of whitelisted addresses that have a withdraw function
EnumerableSet.AddressSet internal s_withdrawTargets;
//################//
// Internal //
//################//
/// @notice Toggles a set of actions to either whitelist or unwhitelist them
/// @param actions The set of actions to toggle whitelisting for
function _toggleWhitelist(Action[] calldata actions) internal {
for (uint256 i; i < actions.length; ++i) {
Action memory action = actions[i];
bytes32 actionId = _generateActionId(action.target, action.caller, action.fnSelector);
s_isWhitelisted[actionId] = action.isWhitelisted;
if (action.isWithdraw && action.isWhitelisted) {
s_withdrawTargets.add(action.target);
} else if (action.isWithdraw && !action.isWhitelisted) {
s_withdrawTargets.remove(action.target);
}
emit WhitelistedActionChanged(action.target, action.caller, action.fnSelector, action.isWhitelisted);
}
}
/// @notice Executes a set of actions as the liquidity warehouse
/// @param executeActions The set of actions to execute
/// @param isOwner True if the caller is the liquidity warehouse's owner
function _execute(ExecuteAction[] calldata executeActions, bool isOwner) internal {
for (uint256 i; i < executeActions.length; ++i) {
ExecuteAction memory executeAction = executeActions[i];
bytes4 fnSelector = bytes4(executeAction.data);
bytes32 actionId = _generateActionId(executeAction.target, msg.sender, fnSelector);
if (!isOwner && !s_isWhitelisted[actionId]) {
revert AccessToCallForbidden(executeAction.target, msg.sender, fnSelector);
}
(bool success,) = executeAction.target.call{value: executeAction.value}(executeAction.data);
if (!success) revert ExecutionFailed(executeAction.target, msg.sender, fnSelector);
}
}
/// @notice Returns true if an action is callable by a caller at a target
/// @param target The target being called
/// @param caller The caller calling the action on the target
/// @param fnSelector The action's function selector
/// @return bool True if the caller is able to call the function at the target
function _isWhitelisted(address target, address caller, bytes4 fnSelector) internal view returns (bool) {
return s_isWhitelisted[_generateActionId(target, caller, fnSelector)];
}
/// @notice Generates an action ID for an action given it's parameters
/// @param target The target being called
/// @param caller The caller calling the action on the target
/// @param fnSelector The action's function selector
/// @return bytes32 The keccak256 hash of the action's parameters
function _generateActionId(address target, address caller, bytes4 fnSelector) internal pure returns (bytes32) {
return keccak256(abi.encode(target, caller, fnSelector));
}
/// @notice Returns the list of target addresses that are withdrawable
/// @return address[] The list of withdrawable targets
function _getWithdrawableTargets() internal view returns (address[] memory) {
return s_withdrawTargets.values();
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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, _status will be _NOT_ENTERED
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;
}
/**
* @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a
* `nonReentrant` function in the call stack.
*/
function _reentrancyGuardEntered() internal view returns (bool) {
return _status == _ENTERED;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract Pausable is Context {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
constructor() {
_paused = false;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
_requireNotPaused();
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
_requirePaused();
_;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Throws if the contract is paused.
*/
function _requireNotPaused() internal view virtual {
require(!paused(), "Pausable: paused");
}
/**
* @dev Throws if the contract is not paused.
*/
function _requirePaused() internal view virtual {
require(paused(), "Pausable: not paused");
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
import {WadRayMath} from './WadRayMath.sol';
/**
* @title MathUtils library
* @author Aave
* @notice Provides functions to perform linear and compounded interest calculations
*/
library MathUtils {
using WadRayMath for uint256;
/// @dev Ignoring leap years
uint256 internal constant SECONDS_PER_YEAR = 365 days;
/**
* @dev Function to calculate the interest accumulated using a linear interest rate formula
* @param rate The interest rate, in ray
* @param lastUpdateTimestamp The timestamp of the last update of the interest
* @return The interest rate linearly accumulated during the timeDelta, in ray
*/
function calculateLinearInterest(
uint256 rate,
uint40 lastUpdateTimestamp
) internal view returns (uint256) {
//solium-disable-next-line
uint256 result = rate * (block.timestamp - uint256(lastUpdateTimestamp));
unchecked {
result = result / SECONDS_PER_YEAR;
}
return WadRayMath.RAY + result;
}
/**
* @dev Function to calculate the interest using a compounded interest rate formula
* To avoid expensive exponentiation, the calculation is performed using a binomial approximation:
*
* (1+x)^n = 1+n*x+[n/2*(n-1)]*x^2+[n/6*(n-1)*(n-2)*x^3...
*
* The approximation slightly underpays liquidity providers and undercharges borrowers, with the advantage of great
* gas cost reductions. The whitepaper contains reference to the approximation and a table showing the margin of
* error per different time periods
*
* @param rate The interest rate, in ray
* @param lastUpdateTimestamp The timestamp of the last update of the interest
* @return The interest rate compounded during the timeDelta, in ray
*/
function calculateCompoundedInterest(
uint256 rate,
uint40 lastUpdateTimestamp,
uint256 currentTimestamp
) internal pure returns (uint256) {
//solium-disable-next-line
uint256 exp = currentTimestamp - uint256(lastUpdateTimestamp);
if (exp == 0) {
return WadRayMath.RAY;
}
uint256 expMinusOne;
uint256 expMinusTwo;
uint256 basePowerTwo;
uint256 basePowerThree;
unchecked {
expMinusOne = exp - 1;
expMinusTwo = exp > 2 ? exp - 2 : 0;
basePowerTwo = rate.rayMul(rate) / (SECONDS_PER_YEAR * SECONDS_PER_YEAR);
basePowerThree = basePowerTwo.rayMul(rate) / SECONDS_PER_YEAR;
}
uint256 secondTerm = exp * expMinusOne * basePowerTwo;
unchecked {
secondTerm /= 2;
}
uint256 thirdTerm = exp * expMinusOne * expMinusTwo * basePowerThree;
unchecked {
thirdTerm /= 6;
}
return WadRayMath.RAY + (rate * exp) / SECONDS_PER_YEAR + secondTerm + thirdTerm;
}
/**
* @dev Calculates the compounded interest between the timestamp of the last update and the current block timestamp
* @param rate The interest rate (in ray)
* @param lastUpdateTimestamp The timestamp from which the interest accumulation needs to be calculated
* @return The interest rate compounded between lastUpdateTimestamp and current block timestamp, in ray
*/
function calculateCompoundedInterest(
uint256 rate,
uint40 lastUpdateTimestamp
) internal view returns (uint256) {
return calculateCompoundedInterest(rate, lastUpdateTimestamp, block.timestamp);
}
}// SPDX-License-Identifier: BUSL-1.1
pragma solidity ^0.8.0;
/**
* @title WadRayMath library
* @author Aave
* @notice Provides functions to perform calculations with Wad and Ray units
* @dev Provides mul and div function for wads (decimal numbers with 18 digits of precision) and rays (decimal numbers
* with 27 digits of precision)
* @dev Operations are rounded. If a value is >=.5, will be rounded up, otherwise rounded down.
*/
library WadRayMath {
// HALF_WAD and HALF_RAY expressed with extended notation as constant with operations are not supported in Yul assembly
uint256 internal constant WAD = 1e18;
uint256 internal constant HALF_WAD = 0.5e18;
uint256 internal constant RAY = 1e27;
uint256 internal constant HALF_RAY = 0.5e27;
uint256 internal constant WAD_RAY_RATIO = 1e9;
/**
* @dev Multiplies two wad, rounding half up to the nearest wad
* @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328
* @param a Wad
* @param b Wad
* @return c = a*b, in wad
*/
function wadMul(uint256 a, uint256 b) internal pure returns (uint256 c) {
// to avoid overflow, a <= (type(uint256).max - HALF_WAD) / b
assembly {
if iszero(or(iszero(b), iszero(gt(a, div(sub(not(0), HALF_WAD), b))))) {
revert(0, 0)
}
c := div(add(mul(a, b), HALF_WAD), WAD)
}
}
/**
* @dev Divides two wad, rounding half up to the nearest wad
* @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328
* @param a Wad
* @param b Wad
* @return c = a/b, in wad
*/
function wadDiv(uint256 a, uint256 b) internal pure returns (uint256 c) {
// to avoid overflow, a <= (type(uint256).max - halfB) / WAD
assembly {
if or(iszero(b), iszero(iszero(gt(a, div(sub(not(0), div(b, 2)), WAD))))) {
revert(0, 0)
}
c := div(add(mul(a, WAD), div(b, 2)), b)
}
}
/**
* @notice Multiplies two ray, rounding half up to the nearest ray
* @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328
* @param a Ray
* @param b Ray
* @return c = a raymul b
*/
function rayMul(uint256 a, uint256 b) internal pure returns (uint256 c) {
// to avoid overflow, a <= (type(uint256).max - HALF_RAY) / b
assembly {
if iszero(or(iszero(b), iszero(gt(a, div(sub(not(0), HALF_RAY), b))))) {
revert(0, 0)
}
c := div(add(mul(a, b), HALF_RAY), RAY)
}
}
/**
* @notice Divides two ray, rounding half up to the nearest ray
* @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328
* @param a Ray
* @param b Ray
* @return c = a raydiv b
*/
function rayDiv(uint256 a, uint256 b) internal pure returns (uint256 c) {
// to avoid overflow, a <= (type(uint256).max - halfB) / RAY
assembly {
if or(iszero(b), iszero(iszero(gt(a, div(sub(not(0), div(b, 2)), RAY))))) {
revert(0, 0)
}
c := div(add(mul(a, RAY), div(b, 2)), b)
}
}
/**
* @dev Casts ray down to wad
* @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328
* @param a Ray
* @return b = a converted to wad, rounded half up to the nearest wad
*/
function rayToWad(uint256 a) internal pure returns (uint256 b) {
assembly {
b := div(a, WAD_RAY_RATIO)
let remainder := mod(a, WAD_RAY_RATIO)
if iszero(lt(remainder, div(WAD_RAY_RATIO, 2))) {
b := add(b, 1)
}
}
}
/**
* @dev Converts wad up to ray
* @dev assembly optimized for improved gas savings, see https://twitter.com/transmissions11/status/1451131036377571328
* @param a Wad
* @return b = a converted in ray
*/
function wadToRay(uint256 a) internal pure returns (uint256 b) {
// to avoid overflow, b/WAD_RAY_RATIO == a
assembly {
b := mul(a, WAD_RAY_RATIO)
if iszero(eq(div(b, WAD_RAY_RATIO), a)) {
revert(0, 0)
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
enum Rounding {
Down, // Toward negative infinity
Up, // Toward infinity
Zero // Toward zero
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a == 0 ? 0 : (a - 1) / b + 1;
}
/**
* @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
* @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
* with further edits by Uniswap Labs also under MIT license.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
// Solidity will revert if denominator == 0, unlike the div opcode on its own.
// The surrounding unchecked block does not change this fact.
// See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
require(denominator > prod1, "Math: mulDiv overflow");
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
// See https://cs.stackexchange.com/q/138556/92363.
// Does not overflow because the denominator cannot be zero at this stage in the function.
uint256 twos = denominator & (~denominator + 1);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
// in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/**
* @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
uint256 result = mulDiv(x, y, denominator);
if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
result += 1;
}
return result;
}
/**
* @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
*
* Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
*/
function sqrt(uint256 a) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
// For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
//
// We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
// `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
//
// This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
// → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
// → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
//
// Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
uint256 result = 1 << (log2(a) >> 1);
// At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
// since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
// every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
// into the expected uint128 result.
unchecked {
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
return min(result, a / result);
}
}
/**
* @notice Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = sqrt(a);
return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
}
}
/**
* @dev Return the log in base 2, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 128;
}
if (value >> 64 > 0) {
value >>= 64;
result += 64;
}
if (value >> 32 > 0) {
value >>= 32;
result += 32;
}
if (value >> 16 > 0) {
value >>= 16;
result += 16;
}
if (value >> 8 > 0) {
value >>= 8;
result += 8;
}
if (value >> 4 > 0) {
value >>= 4;
result += 4;
}
if (value >> 2 > 0) {
value >>= 2;
result += 2;
}
if (value >> 1 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 2, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log2(value);
return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 10, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10 ** 64) {
value /= 10 ** 64;
result += 64;
}
if (value >= 10 ** 32) {
value /= 10 ** 32;
result += 32;
}
if (value >= 10 ** 16) {
value /= 10 ** 16;
result += 16;
}
if (value >= 10 ** 8) {
value /= 10 ** 8;
result += 8;
}
if (value >= 10 ** 4) {
value /= 10 ** 4;
result += 4;
}
if (value >= 10 ** 2) {
value /= 10 ** 2;
result += 2;
}
if (value >= 10 ** 1) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 256, rounded down, of a positive value.
* Returns 0 if given 0.
*
* Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
*/
function log256(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 16;
}
if (value >> 64 > 0) {
value >>= 64;
result += 8;
}
if (value >> 32 > 0) {
value >>= 32;
result += 4;
}
if (value >> 16 > 0) {
value >>= 16;
result += 2;
}
if (value >> 8 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 256, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
}
}
}// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.19;
interface IEmergencyPausable {
/// @notice Pauses the contract
function emergencyPause() external;
/// @notice Unpauses the contract
function emergencyUnpause() external;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/AccessControlDefaultAdminRules.sol)
pragma solidity ^0.8.0;
import "./AccessControl.sol";
import "./IAccessControlDefaultAdminRules.sol";
import "../utils/math/SafeCast.sol";
import "../interfaces/IERC5313.sol";
/**
* @dev Extension of {AccessControl} that allows specifying special rules to manage
* the `DEFAULT_ADMIN_ROLE` holder, which is a sensitive role with special permissions
* over other roles that may potentially have privileged rights in the system.
*
* If a specific role doesn't have an admin role assigned, the holder of the
* `DEFAULT_ADMIN_ROLE` will have the ability to grant it and revoke it.
*
* This contract implements the following risk mitigations on top of {AccessControl}:
*
* * Only one account holds the `DEFAULT_ADMIN_ROLE` since deployment until it's potentially renounced.
* * Enforces a 2-step process to transfer the `DEFAULT_ADMIN_ROLE` to another account.
* * Enforces a configurable delay between the two steps, with the ability to cancel before the transfer is accepted.
* * The delay can be changed by scheduling, see {changeDefaultAdminDelay}.
* * It is not possible to use another role to manage the `DEFAULT_ADMIN_ROLE`.
*
* Example usage:
*
* ```solidity
* contract MyToken is AccessControlDefaultAdminRules {
* constructor() AccessControlDefaultAdminRules(
* 3 days,
* msg.sender // Explicit initial `DEFAULT_ADMIN_ROLE` holder
* ) {}
* }
* ```
*
* _Available since v4.9._
*/
abstract contract AccessControlDefaultAdminRules is IAccessControlDefaultAdminRules, IERC5313, AccessControl {
// pending admin pair read/written together frequently
address private _pendingDefaultAdmin;
uint48 private _pendingDefaultAdminSchedule; // 0 == unset
uint48 private _currentDelay;
address private _currentDefaultAdmin;
// pending delay pair read/written together frequently
uint48 private _pendingDelay;
uint48 private _pendingDelaySchedule; // 0 == unset
/**
* @dev Sets the initial values for {defaultAdminDelay} and {defaultAdmin} address.
*/
constructor(uint48 initialDelay, address initialDefaultAdmin) {
require(initialDefaultAdmin != address(0), "AccessControl: 0 default admin");
_currentDelay = initialDelay;
_grantRole(DEFAULT_ADMIN_ROLE, initialDefaultAdmin);
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IAccessControlDefaultAdminRules).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC5313-owner}.
*/
function owner() public view virtual returns (address) {
return defaultAdmin();
}
///
/// Override AccessControl role management
///
/**
* @dev See {AccessControl-grantRole}. Reverts for `DEFAULT_ADMIN_ROLE`.
*/
function grantRole(bytes32 role, address account) public virtual override(AccessControl, IAccessControl) {
require(role != DEFAULT_ADMIN_ROLE, "AccessControl: can't directly grant default admin role");
super.grantRole(role, account);
}
/**
* @dev See {AccessControl-revokeRole}. Reverts for `DEFAULT_ADMIN_ROLE`.
*/
function revokeRole(bytes32 role, address account) public virtual override(AccessControl, IAccessControl) {
require(role != DEFAULT_ADMIN_ROLE, "AccessControl: can't directly revoke default admin role");
super.revokeRole(role, account);
}
/**
* @dev See {AccessControl-renounceRole}.
*
* For the `DEFAULT_ADMIN_ROLE`, it only allows renouncing in two steps by first calling
* {beginDefaultAdminTransfer} to the `address(0)`, so it's required that the {pendingDefaultAdmin} schedule
* has also passed when calling this function.
*
* After its execution, it will not be possible to call `onlyRole(DEFAULT_ADMIN_ROLE)` functions.
*
* NOTE: Renouncing `DEFAULT_ADMIN_ROLE` will leave the contract without a {defaultAdmin},
* thereby disabling any functionality that is only available for it, and the possibility of reassigning a
* non-administrated role.
*/
function renounceRole(bytes32 role, address account) public virtual override(AccessControl, IAccessControl) {
if (role == DEFAULT_ADMIN_ROLE && account == defaultAdmin()) {
(address newDefaultAdmin, uint48 schedule) = pendingDefaultAdmin();
require(
newDefaultAdmin == address(0) && _isScheduleSet(schedule) && _hasSchedulePassed(schedule),
"AccessControl: only can renounce in two delayed steps"
);
delete _pendingDefaultAdminSchedule;
}
super.renounceRole(role, account);
}
/**
* @dev See {AccessControl-_grantRole}.
*
* For `DEFAULT_ADMIN_ROLE`, it only allows granting if there isn't already a {defaultAdmin} or if the
* role has been previously renounced.
*
* NOTE: Exposing this function through another mechanism may make the `DEFAULT_ADMIN_ROLE`
* assignable again. Make sure to guarantee this is the expected behavior in your implementation.
*/
function _grantRole(bytes32 role, address account) internal virtual override {
if (role == DEFAULT_ADMIN_ROLE) {
require(defaultAdmin() == address(0), "AccessControl: default admin already granted");
_currentDefaultAdmin = account;
}
super._grantRole(role, account);
}
/**
* @dev See {AccessControl-_revokeRole}.
*/
function _revokeRole(bytes32 role, address account) internal virtual override {
if (role == DEFAULT_ADMIN_ROLE && account == defaultAdmin()) {
delete _currentDefaultAdmin;
}
super._revokeRole(role, account);
}
/**
* @dev See {AccessControl-_setRoleAdmin}. Reverts for `DEFAULT_ADMIN_ROLE`.
*/
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual override {
require(role != DEFAULT_ADMIN_ROLE, "AccessControl: can't violate default admin rules");
super._setRoleAdmin(role, adminRole);
}
///
/// AccessControlDefaultAdminRules accessors
///
/**
* @inheritdoc IAccessControlDefaultAdminRules
*/
function defaultAdmin() public view virtual returns (address) {
return _currentDefaultAdmin;
}
/**
* @inheritdoc IAccessControlDefaultAdminRules
*/
function pendingDefaultAdmin() public view virtual returns (address newAdmin, uint48 schedule) {
return (_pendingDefaultAdmin, _pendingDefaultAdminSchedule);
}
/**
* @inheritdoc IAccessControlDefaultAdminRules
*/
function defaultAdminDelay() public view virtual returns (uint48) {
uint48 schedule = _pendingDelaySchedule;
return (_isScheduleSet(schedule) && _hasSchedulePassed(schedule)) ? _pendingDelay : _currentDelay;
}
/**
* @inheritdoc IAccessControlDefaultAdminRules
*/
function pendingDefaultAdminDelay() public view virtual returns (uint48 newDelay, uint48 schedule) {
schedule = _pendingDelaySchedule;
return (_isScheduleSet(schedule) && !_hasSchedulePassed(schedule)) ? (_pendingDelay, schedule) : (0, 0);
}
/**
* @inheritdoc IAccessControlDefaultAdminRules
*/
function defaultAdminDelayIncreaseWait() public view virtual returns (uint48) {
return 5 days;
}
///
/// AccessControlDefaultAdminRules public and internal setters for defaultAdmin/pendingDefaultAdmin
///
/**
* @inheritdoc IAccessControlDefaultAdminRules
*/
function beginDefaultAdminTransfer(address newAdmin) public virtual onlyRole(DEFAULT_ADMIN_ROLE) {
_beginDefaultAdminTransfer(newAdmin);
}
/**
* @dev See {beginDefaultAdminTransfer}.
*
* Internal function without access restriction.
*/
function _beginDefaultAdminTransfer(address newAdmin) internal virtual {
uint48 newSchedule = SafeCast.toUint48(block.timestamp) + defaultAdminDelay();
_setPendingDefaultAdmin(newAdmin, newSchedule);
emit DefaultAdminTransferScheduled(newAdmin, newSchedule);
}
/**
* @inheritdoc IAccessControlDefaultAdminRules
*/
function cancelDefaultAdminTransfer() public virtual onlyRole(DEFAULT_ADMIN_ROLE) {
_cancelDefaultAdminTransfer();
}
/**
* @dev See {cancelDefaultAdminTransfer}.
*
* Internal function without access restriction.
*/
function _cancelDefaultAdminTransfer() internal virtual {
_setPendingDefaultAdmin(address(0), 0);
}
/**
* @inheritdoc IAccessControlDefaultAdminRules
*/
function acceptDefaultAdminTransfer() public virtual {
(address newDefaultAdmin, ) = pendingDefaultAdmin();
require(_msgSender() == newDefaultAdmin, "AccessControl: pending admin must accept");
_acceptDefaultAdminTransfer();
}
/**
* @dev See {acceptDefaultAdminTransfer}.
*
* Internal function without access restriction.
*/
function _acceptDefaultAdminTransfer() internal virtual {
(address newAdmin, uint48 schedule) = pendingDefaultAdmin();
require(_isScheduleSet(schedule) && _hasSchedulePassed(schedule), "AccessControl: transfer delay not passed");
_revokeRole(DEFAULT_ADMIN_ROLE, defaultAdmin());
_grantRole(DEFAULT_ADMIN_ROLE, newAdmin);
delete _pendingDefaultAdmin;
delete _pendingDefaultAdminSchedule;
}
///
/// AccessControlDefaultAdminRules public and internal setters for defaultAdminDelay/pendingDefaultAdminDelay
///
/**
* @inheritdoc IAccessControlDefaultAdminRules
*/
function changeDefaultAdminDelay(uint48 newDelay) public virtual onlyRole(DEFAULT_ADMIN_ROLE) {
_changeDefaultAdminDelay(newDelay);
}
/**
* @dev See {changeDefaultAdminDelay}.
*
* Internal function without access restriction.
*/
function _changeDefaultAdminDelay(uint48 newDelay) internal virtual {
uint48 newSchedule = SafeCast.toUint48(block.timestamp) + _delayChangeWait(newDelay);
_setPendingDelay(newDelay, newSchedule);
emit DefaultAdminDelayChangeScheduled(newDelay, newSchedule);
}
/**
* @inheritdoc IAccessControlDefaultAdminRules
*/
function rollbackDefaultAdminDelay() public virtual onlyRole(DEFAULT_ADMIN_ROLE) {
_rollbackDefaultAdminDelay();
}
/**
* @dev See {rollbackDefaultAdminDelay}.
*
* Internal function without access restriction.
*/
function _rollbackDefaultAdminDelay() internal virtual {
_setPendingDelay(0, 0);
}
/**
* @dev Returns the amount of seconds to wait after the `newDelay` will
* become the new {defaultAdminDelay}.
*
* The value returned guarantees that if the delay is reduced, it will go into effect
* after a wait that honors the previously set delay.
*
* See {defaultAdminDelayIncreaseWait}.
*/
function _delayChangeWait(uint48 newDelay) internal view virtual returns (uint48) {
uint48 currentDelay = defaultAdminDelay();
// When increasing the delay, we schedule the delay change to occur after a period of "new delay" has passed, up
// to a maximum given by defaultAdminDelayIncreaseWait, by default 5 days. For example, if increasing from 1 day
// to 3 days, the new delay will come into effect after 3 days. If increasing from 1 day to 10 days, the new
// delay will come into effect after 5 days. The 5 day wait period is intended to be able to fix an error like
// using milliseconds instead of seconds.
//
// When decreasing the delay, we wait the difference between "current delay" and "new delay". This guarantees
// that an admin transfer cannot be made faster than "current delay" at the time the delay change is scheduled.
// For example, if decreasing from 10 days to 3 days, the new delay will come into effect after 7 days.
return
newDelay > currentDelay
? uint48(Math.min(newDelay, defaultAdminDelayIncreaseWait())) // no need to safecast, both inputs are uint48
: currentDelay - newDelay;
}
///
/// Private setters
///
/**
* @dev Setter of the tuple for pending admin and its schedule.
*
* May emit a DefaultAdminTransferCanceled event.
*/
function _setPendingDefaultAdmin(address newAdmin, uint48 newSchedule) private {
(, uint48 oldSchedule) = pendingDefaultAdmin();
_pendingDefaultAdmin = newAdmin;
_pendingDefaultAdminSchedule = newSchedule;
// An `oldSchedule` from `pendingDefaultAdmin()` is only set if it hasn't been accepted.
if (_isScheduleSet(oldSchedule)) {
// Emit for implicit cancellations when another default admin was scheduled.
emit DefaultAdminTransferCanceled();
}
}
/**
* @dev Setter of the tuple for pending delay and its schedule.
*
* May emit a DefaultAdminDelayChangeCanceled event.
*/
function _setPendingDelay(uint48 newDelay, uint48 newSchedule) private {
uint48 oldSchedule = _pendingDelaySchedule;
if (_isScheduleSet(oldSchedule)) {
if (_hasSchedulePassed(oldSchedule)) {
// Materialize a virtual delay
_currentDelay = _pendingDelay;
} else {
// Emit for implicit cancellations when another delay was scheduled.
emit DefaultAdminDelayChangeCanceled();
}
}
_pendingDelay = newDelay;
_pendingDelaySchedule = newSchedule;
}
///
/// Private helpers
///
/**
* @dev Defines if an `schedule` is considered set. For consistency purposes.
*/
function _isScheduleSet(uint48 schedule) private pure returns (bool) {
return schedule != 0;
}
/**
* @dev Defines if an `schedule` is considered passed. For consistency purposes.
*/
function _hasSchedulePassed(uint48 schedule) private view returns (bool) {
return schedule < block.timestamp;
}
}// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.19;
interface IWETH {
function deposit() external payable;
}// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.19;
interface ICurveTwocryptoOptimized {
function calc_withdraw_one_coin(uint256 _burn_amount, uint256 i) external view returns (uint256);
function add_liquidity(uint256[2] memory _amounts, uint256 _min_mint_amount) external returns (uint256);
function remove_liquidity_one_coin(uint256 _burn_amount, uint256 i, uint256 _min_received)
external
returns (uint256);
function coins(uint256 idx) external view returns (address);
function last_prices() external view returns (uint256);
function price_oracle() external view returns (uint256);
function balances(uint256) external view returns (uint256);
function balanceOf(address) external view returns (uint256);
function get_dx(uint256 i, uint256 j, uint256 dy) external view returns (uint256);
function get_dy(uint256 i, uint256 j, uint256 dx) external view returns (uint256);
function exchange(uint256 i, uint256 j, uint256 _dx, uint256 _min_dy) external returns (uint256);
}// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.19;
interface ICurveStableSwapNG {
function coins(uint256 idx) external view returns (address);
function N_COINS() external view returns (uint256);
function remove_liquidity_one_coin(uint256 _burn_amount, int128 i, uint256 _min_received)
external
returns (uint256);
function exchange(int128 i, int128 j, uint256 _dx, uint256 _min_dy) external returns (uint256);
function get_dx(int128 i, int128 j, uint256 dy) external view returns (uint256);
function get_dy(int128 i, int128 j, uint256 dx) external view returns (uint256);
function calc_withdraw_one_coin(uint256 _burn_amount, int128 i) external view returns (uint256);
function add_liquidity(uint256[] memory _amounts, uint256 _min_mint_amount) external returns (uint256);
function balanceOf(address) external view returns (uint256);
function last_price(uint256 i) external view returns (uint256);
function price_oracle(uint256 i) external view returns (uint256);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC1155/IERC1155.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC1155 compliant contract, as defined in the
* https://eips.ethereum.org/EIPS/eip-1155[EIP].
*
* _Available since v3.1._
*/
interface IERC1155 is IERC165 {
/**
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
*/
event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);
/**
* @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
* transfers.
*/
event TransferBatch(
address indexed operator,
address indexed from,
address indexed to,
uint256[] ids,
uint256[] values
);
/**
* @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
* `approved`.
*/
event ApprovalForAll(address indexed account, address indexed operator, bool approved);
/**
* @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
*
* If an {URI} event was emitted for `id`, the standard
* https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
* returned by {IERC1155MetadataURI-uri}.
*/
event URI(string value, uint256 indexed id);
/**
* @dev Returns the amount of tokens of token type `id` owned by `account`.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) external view returns (uint256);
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(
address[] calldata accounts,
uint256[] calldata ids
) external view returns (uint256[] memory);
/**
* @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
*
* Emits an {ApprovalForAll} event.
*
* Requirements:
*
* - `operator` cannot be the caller.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address account, address operator) external view returns (bool);
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If the caller is not `from`, it must have been approved to spend ``from``'s tokens via {setApprovalForAll}.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function safeTransferFrom(address from, address to, uint256 id, uint256 amount, bytes calldata data) external;
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata amounts,
bytes calldata data
) external;
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev _Available since v3.1._
*/
interface IERC1155Receiver is IERC165 {
/**
* @dev Handles the receipt of a single ERC1155 token type. This function is
* called at the end of a `safeTransferFrom` after the balance has been updated.
*
* NOTE: To accept the transfer, this must return
* `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
* (i.e. 0xf23a6e61, or its own function selector).
*
* @param operator The address which initiated the transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param id The ID of the token being transferred
* @param value The amount of tokens being transferred
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
*/
function onERC1155Received(
address operator,
address from,
uint256 id,
uint256 value,
bytes calldata data
) external returns (bytes4);
/**
* @dev Handles the receipt of a multiple ERC1155 token types. This function
* is called at the end of a `safeBatchTransferFrom` after the balances have
* been updated.
*
* NOTE: To accept the transfer(s), this must return
* `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
* (i.e. 0xbc197c81, or its own function selector).
*
* @param operator The address which initiated the batch transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param ids An array containing ids of each token being transferred (order and length must match values array)
* @param values An array containing amounts of each token being transferred (order and length must match ids array)
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
*/
function onERC1155BatchReceived(
address operator,
address from,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
) external returns (bytes4);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol)
pragma solidity ^0.8.0;
import "../IERC1155.sol";
/**
* @dev Interface of the optional ERC1155MetadataExtension interface, as defined
* in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
*
* _Available since v3.1._
*/
interface IERC1155MetadataURI is IERC1155 {
/**
* @dev Returns the URI for token type `id`.
*
* If the `\{id\}` substring is present in the URI, it must be replaced by
* clients with the actual token type ID.
*/
function uri(uint256 id) external view returns (string memory);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (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
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [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://consensys.net/diligence/blog/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/v0.8.0/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 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 (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 (last updated v4.9.0) (token/ERC20/extensions/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 v4.9.0) (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:
*
* ```solidity
* 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}:
*
* ```solidity
* 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. We recommend using {AccessControlDefaultAdminRules}
* to enforce additional security measures for this role.
*/
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 v4.9.0) (access/IAccessControlDefaultAdminRules.sol)
pragma solidity ^0.8.0;
import "./IAccessControl.sol";
/**
* @dev External interface of AccessControlDefaultAdminRules declared to support ERC165 detection.
*
* _Available since v4.9._
*/
interface IAccessControlDefaultAdminRules is IAccessControl {
/**
* @dev Emitted when a {defaultAdmin} transfer is started, setting `newAdmin` as the next
* address to become the {defaultAdmin} by calling {acceptDefaultAdminTransfer} only after `acceptSchedule`
* passes.
*/
event DefaultAdminTransferScheduled(address indexed newAdmin, uint48 acceptSchedule);
/**
* @dev Emitted when a {pendingDefaultAdmin} is reset if it was never accepted, regardless of its schedule.
*/
event DefaultAdminTransferCanceled();
/**
* @dev Emitted when a {defaultAdminDelay} change is started, setting `newDelay` as the next
* delay to be applied between default admin transfer after `effectSchedule` has passed.
*/
event DefaultAdminDelayChangeScheduled(uint48 newDelay, uint48 effectSchedule);
/**
* @dev Emitted when a {pendingDefaultAdminDelay} is reset if its schedule didn't pass.
*/
event DefaultAdminDelayChangeCanceled();
/**
* @dev Returns the address of the current `DEFAULT_ADMIN_ROLE` holder.
*/
function defaultAdmin() external view returns (address);
/**
* @dev Returns a tuple of a `newAdmin` and an accept schedule.
*
* After the `schedule` passes, the `newAdmin` will be able to accept the {defaultAdmin} role
* by calling {acceptDefaultAdminTransfer}, completing the role transfer.
*
* A zero value only in `acceptSchedule` indicates no pending admin transfer.
*
* NOTE: A zero address `newAdmin` means that {defaultAdmin} is being renounced.
*/
function pendingDefaultAdmin() external view returns (address newAdmin, uint48 acceptSchedule);
/**
* @dev Returns the delay required to schedule the acceptance of a {defaultAdmin} transfer started.
*
* This delay will be added to the current timestamp when calling {beginDefaultAdminTransfer} to set
* the acceptance schedule.
*
* NOTE: If a delay change has been scheduled, it will take effect as soon as the schedule passes, making this
* function returns the new delay. See {changeDefaultAdminDelay}.
*/
function defaultAdminDelay() external view returns (uint48);
/**
* @dev Returns a tuple of `newDelay` and an effect schedule.
*
* After the `schedule` passes, the `newDelay` will get into effect immediately for every
* new {defaultAdmin} transfer started with {beginDefaultAdminTransfer}.
*
* A zero value only in `effectSchedule` indicates no pending delay change.
*
* NOTE: A zero value only for `newDelay` means that the next {defaultAdminDelay}
* will be zero after the effect schedule.
*/
function pendingDefaultAdminDelay() external view returns (uint48 newDelay, uint48 effectSchedule);
/**
* @dev Starts a {defaultAdmin} transfer by setting a {pendingDefaultAdmin} scheduled for acceptance
* after the current timestamp plus a {defaultAdminDelay}.
*
* Requirements:
*
* - Only can be called by the current {defaultAdmin}.
*
* Emits a DefaultAdminRoleChangeStarted event.
*/
function beginDefaultAdminTransfer(address newAdmin) external;
/**
* @dev Cancels a {defaultAdmin} transfer previously started with {beginDefaultAdminTransfer}.
*
* A {pendingDefaultAdmin} not yet accepted can also be cancelled with this function.
*
* Requirements:
*
* - Only can be called by the current {defaultAdmin}.
*
* May emit a DefaultAdminTransferCanceled event.
*/
function cancelDefaultAdminTransfer() external;
/**
* @dev Completes a {defaultAdmin} transfer previously started with {beginDefaultAdminTransfer}.
*
* After calling the function:
*
* - `DEFAULT_ADMIN_ROLE` should be granted to the caller.
* - `DEFAULT_ADMIN_ROLE` should be revoked from the previous holder.
* - {pendingDefaultAdmin} should be reset to zero values.
*
* Requirements:
*
* - Only can be called by the {pendingDefaultAdmin}'s `newAdmin`.
* - The {pendingDefaultAdmin}'s `acceptSchedule` should've passed.
*/
function acceptDefaultAdminTransfer() external;
/**
* @dev Initiates a {defaultAdminDelay} update by setting a {pendingDefaultAdminDelay} scheduled for getting
* into effect after the current timestamp plus a {defaultAdminDelay}.
*
* This function guarantees that any call to {beginDefaultAdminTransfer} done between the timestamp this
* method is called and the {pendingDefaultAdminDelay} effect schedule will use the current {defaultAdminDelay}
* set before calling.
*
* The {pendingDefaultAdminDelay}'s effect schedule is defined in a way that waiting until the schedule and then
* calling {beginDefaultAdminTransfer} with the new delay will take at least the same as another {defaultAdmin}
* complete transfer (including acceptance).
*
* The schedule is designed for two scenarios:
*
* - When the delay is changed for a larger one the schedule is `block.timestamp + newDelay` capped by
* {defaultAdminDelayIncreaseWait}.
* - When the delay is changed for a shorter one, the schedule is `block.timestamp + (current delay - new delay)`.
*
* A {pendingDefaultAdminDelay} that never got into effect will be canceled in favor of a new scheduled change.
*
* Requirements:
*
* - Only can be called by the current {defaultAdmin}.
*
* Emits a DefaultAdminDelayChangeScheduled event and may emit a DefaultAdminDelayChangeCanceled event.
*/
function changeDefaultAdminDelay(uint48 newDelay) external;
/**
* @dev Cancels a scheduled {defaultAdminDelay} change.
*
* Requirements:
*
* - Only can be called by the current {defaultAdmin}.
*
* May emit a DefaultAdminDelayChangeCanceled event.
*/
function rollbackDefaultAdminDelay() external;
/**
* @dev Maximum time in seconds for an increase to {defaultAdminDelay} (that is scheduled using {changeDefaultAdminDelay})
* to take effect. Default to 5 days.
*
* When the {defaultAdminDelay} is scheduled to be increased, it goes into effect after the new delay has passed with
* the purpose of giving enough time for reverting any accidental change (i.e. using milliseconds instead of seconds)
* that may lock the contract. However, to avoid excessive schedules, the wait is capped by this function and it can
* be overrode for a custom {defaultAdminDelay} increase scheduling.
*
* IMPORTANT: Make sure to add a reasonable amount of time while overriding this value, otherwise,
* there's a risk of setting a high new delay that goes into effect almost immediately without the
* possibility of human intervention in the case of an input error (eg. set milliseconds instead of seconds).
*/
function defaultAdminDelayIncreaseWait() external view returns (uint48);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC5313.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface for the Light Contract Ownership Standard.
*
* A standardized minimal interface required to identify an account that controls a contract
*
* _Available since v4.9._
*/
interface IERC5313 {
/**
* @dev Gets the address of the owner.
*/
function owner() external view returns (address);
}// 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);
}// 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 (last updated v4.9.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
import "./math/Math.sol";
import "./math/SignedMath.sol";
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _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) {
unchecked {
uint256 length = Math.log10(value) + 1;
string memory buffer = new string(length);
uint256 ptr;
/// @solidity memory-safe-assembly
assembly {
ptr := add(buffer, add(32, length))
}
while (true) {
ptr--;
/// @solidity memory-safe-assembly
assembly {
mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
}
value /= 10;
if (value == 0) break;
}
return buffer;
}
}
/**
* @dev Converts a `int256` to its ASCII `string` decimal representation.
*/
function toString(int256 value) internal pure returns (string memory) {
return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
unchecked {
return toHexString(value, Math.log256(value) + 1);
}
}
/**
* @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] = _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);
}
/**
* @dev Returns true if the two strings are equal.
*/
function equal(string memory a, string memory b) internal pure returns (bool) {
return keccak256(bytes(a)) == keccak256(bytes(b));
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard signed math utilities missing in the Solidity language.
*/
library SignedMath {
/**
* @dev Returns the largest of two signed numbers.
*/
function max(int256 a, int256 b) internal pure returns (int256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two signed numbers.
*/
function min(int256 a, int256 b) internal pure returns (int256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two signed numbers without overflow.
* The result is rounded towards zero.
*/
function average(int256 a, int256 b) internal pure returns (int256) {
// Formula from the book "Hacker's Delight"
int256 x = (a & b) + ((a ^ b) >> 1);
return x + (int256(uint256(x) >> 255) & (a ^ b));
}
/**
* @dev Returns the absolute unsigned value of a signed value.
*/
function abs(int256 n) internal pure returns (uint256) {
unchecked {
// must be unchecked in order to support `n = type(int256).min`
return uint256(n >= 0 ? n : -n);
}
}
}{
"remappings": [
"erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
"forge-std/=lib/forge-std/src/",
"openzeppelin-contracts/=lib/openzeppelin-contracts/",
"openzeppelin/=lib/openzeppelin-contracts/contracts/",
"@openzeppelin/=lib/openzeppelin-contracts/",
"@uniswap/v3-core/=lib/v3-core/",
"gamma/v1/=lib/v1-core/",
"chainlink/=lib/chainlink/contracts/",
"KTX-core/=lib/KTX-core/contracts/",
"TeaVaultV3Pair/=lib/TeaVaultV3Pair/contracts/",
"aave-v3-core/=lib/aave-v3-core/",
"ds-test/=lib/v1-core/lib/forge-std/lib/ds-test/src/",
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- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
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Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : params (tuple):
Arg [1] : liquidationThreshold (uint256): 10000000000000000
Arg [2] : capacityThreshold (uint256): 50000000000000000
Arg [3] : interestRate (uint256): 150000000000000000
Arg [4] : interestFee (uint256): 0
Arg [5] : withdrawalFee (uint256): 1000000000000000
Arg [6] : initialDelay (uint48): 0
Arg [7] : asset (address): 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1
Arg [8] : feeRecipient (address): 0x8Af45C444e7110276adebc5322358DC77A34D4bE
Arg [9] : initialAdmin (address): 0x12ee348880DafF8effAdEb0e6551cff7de9bb0c6
Arg [10] : wrappedNativeToken (address): 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1
Arg [11] : uri (string): reserve-weth-liquidity-warehouse
Arg [1] : assetConfigs (tuple[]):
Arg [1] : asset (address): 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1
Arg [2] : assetConfig (tuple):
Arg [1] : id (uint8): 0
Arg [2] : fee (uint24): 0
Arg [3] : slippage (uint128): 990000000000000000
Arg [4] : curveSwapPool (address): 0x0000000000000000000000000000000000000000
Arg [2] : withdrawAsset (tuple[]):
Arg [1] : curvePool (address): 0x1Fb84Fa6D252762e8367eA607A6586E09dceBe3D
Arg [2] : withdrawAsset (address): 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1
Arg [3] : maxDeviation (uint256): 10000000000000000
Arg [4] : extraMargin (uint256): 1002000000000000000
-----Encoded View---------------
27 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000a0
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000240
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000300
Arg [3] : 000000000000000000000000000000000000000000000000002386f26fc10000
Arg [4] : 0000000000000000000000000000000000000000000000000de7d1b0f0f10000
Arg [5] : 000000000000000000000000000000000000000000000000002386f26fc10000
Arg [6] : 00000000000000000000000000000000000000000000000000b1a2bc2ec50000
Arg [7] : 0000000000000000000000000000000000000000000000000214e8348c4f0000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [9] : 00000000000000000000000000000000000000000000000000038d7ea4c68000
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [11] : 00000000000000000000000082af49447d8a07e3bd95bd0d56f35241523fbab1
Arg [12] : 0000000000000000000000008af45c444e7110276adebc5322358dc77a34d4be
Arg [13] : 00000000000000000000000012ee348880daff8effadeb0e6551cff7de9bb0c6
Arg [14] : 00000000000000000000000082af49447d8a07e3bd95bd0d56f35241523fbab1
Arg [15] : 0000000000000000000000000000000000000000000000000000000000000160
Arg [16] : 0000000000000000000000000000000000000000000000000000000000000020
Arg [17] : 726573657276652d776574682d6c69717569646974792d77617265686f757365
Arg [18] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [19] : 00000000000000000000000082af49447d8a07e3bd95bd0d56f35241523fbab1
Arg [20] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [21] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [22] : 0000000000000000000000000000000000000000000000000dbd2fc137a30000
Arg [23] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [24] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [25] : 0000000000000000000000001fb84fa6d252762e8367ea607a6586e09dcebe3d
Arg [26] : 00000000000000000000000082af49447d8a07e3bd95bd0d56f35241523fbab1
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Net Worth in USD
$0.34
Net Worth in ETH
0.000144
Token Allocations
WETH
100.00%
Multichain Portfolio | 35 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
|---|---|---|---|---|---|
| ARB | 100.00% | $2,370.58 | 0.00014466 | $0.3429 |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.