Contract Source Code:
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;
import "openzeppelin-contracts/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
import "openzeppelin-contracts/contracts/access/Ownable.sol";
import "openzeppelin-contracts/contracts/utils/math/Math.sol";
import "./Interfaces/ITroveManager.sol";
import "./Interfaces/ILQTYStaking.sol";
import "./Interfaces/IPickleJar.sol";
import "./Interfaces/ICurveGaugeController.sol";
import "./Interfaces/IBondNFTArtwork.sol";
import "./Interfaces/IBondNFT.sol";
//import "forge-std/console.sol";
contract BondNFT is ERC721Enumerable, Ownable, IBondNFT {
uint256 public constant CURVE_GAUGE_SLOPES_PRECISION = 1e9; // The minimum slope to get extra weight 1e-9
IChickenBondManager public chickenBondManager;
IBondNFTArtwork public artwork;
ITroveManager immutable public troveManager;
IERC20 immutable public lqtyToken;
ILQTYStaking immutable public lqtyStaking;
IPickleJar immutable public pickleLQTYJar;
IERC20 immutable public pickleLQTYFarm;
ICurveGaugeController immutable public curveGaugeController;
address immutable public curveLUSD3CRVGauge;
address immutable public curveLUSDFRAXGauge;
uint256 immutable public transferLockoutPeriodSeconds;
mapping (uint256 => BondExtraData) private idToBondExtraData;
struct LiquityDataAddresses {
address troveManagerAddress;
address lqtyToken;
address lqtyStaking;
address pickleLQTYJar;
address pickleLQTYFarm;
address curveGaugeController;
address curveLUSD3CRVGauge;
address curveLUSDFRAXGauge;
}
constructor(
string memory name_,
string memory symbol_,
address _initialArtworkAddress,
uint256 _transferLockoutPeriodSeconds,
LiquityDataAddresses memory _liquityDataAddresses // to avoid stack too deep issues
)
ERC721(name_, symbol_)
{
require(_liquityDataAddresses.troveManagerAddress != address(0), "BondNFT: _troveManagerAddress must be non-zero");
require(_liquityDataAddresses.lqtyToken != address(0), "BondNFT: _lqtyToken must be non-zero");
require(_liquityDataAddresses.lqtyStaking != address(0), "BondNFT: _lqtyStaking must be non-zero");
require(_liquityDataAddresses.pickleLQTYJar != address(0), "BondNFT: _pickleLQTYJar must be non-zero");
require(_liquityDataAddresses.pickleLQTYFarm != address(0), "BondNFT: _pickleLQTYFarm must be non-zero");
require(_liquityDataAddresses.curveGaugeController != address(0), "BondNFT: _curveGaugeController must be non-zero");
require(_liquityDataAddresses.curveLUSD3CRVGauge != address(0), "BondNFT: _curveLUSD3CRVGauge must be non-zero");
require(_liquityDataAddresses.curveLUSDFRAXGauge != address(0), "BondNFT: _curveLUSDFRAXGauge must be non-zero");
artwork = IBondNFTArtwork(_initialArtworkAddress);
transferLockoutPeriodSeconds = _transferLockoutPeriodSeconds;
troveManager = ITroveManager(_liquityDataAddresses.troveManagerAddress);
lqtyToken = IERC20(_liquityDataAddresses.lqtyToken);
lqtyStaking = ILQTYStaking(_liquityDataAddresses.lqtyStaking);
pickleLQTYJar = IPickleJar(_liquityDataAddresses.pickleLQTYJar);
pickleLQTYFarm = IERC20(_liquityDataAddresses.pickleLQTYFarm);
curveGaugeController = ICurveGaugeController(_liquityDataAddresses.curveGaugeController);
curveLUSD3CRVGauge = _liquityDataAddresses.curveLUSD3CRVGauge;
curveLUSDFRAXGauge = _liquityDataAddresses.curveLUSDFRAXGauge;
}
function setAddresses(address _chickenBondManagerAddress) external onlyOwner {
require(_chickenBondManagerAddress != address(0), "BondNFT: _chickenBondManagerAddress must be non-zero");
require(address(chickenBondManager) == address(0), "BondNFT: setAddresses() can only be called once");
chickenBondManager = IChickenBondManager(_chickenBondManagerAddress);
}
function setArtworkAddress(address _artworkAddress) external onlyOwner {
// Make sure addresses have been set, as we'll be renouncing ownership
require(address(chickenBondManager) != address(0), "BondNFT: setAddresses() must be called first");
artwork = IBondNFTArtwork(_artworkAddress);
renounceOwnership();
}
function mint(address _bonder, uint256 _permanentSeed) external returns (uint256, uint80) {
requireCallerIsChickenBondsManager();
// We actually increase totalSupply in `ERC721Enumerable._beforeTokenTransfer` when we `_mint`.
uint256 tokenID = totalSupply() + 1;
//Record first half of DNA
BondExtraData memory bondExtraData;
uint80 initialHalfDna = getHalfDna(tokenID, _permanentSeed);
bondExtraData.initialHalfDna = initialHalfDna;
idToBondExtraData[tokenID] = bondExtraData;
_mint(_bonder, tokenID);
return (tokenID, initialHalfDna);
}
function _uint256ToUint32(uint256 _inputAmount) internal pure returns (uint32) {
return uint32(Math.min(_inputAmount / 1e18, type(uint32).max));
}
function setFinalExtraData(address _bonder, uint256 _tokenID, uint256 _permanentSeed) external returns (uint80) {
requireCallerIsChickenBondsManager();
// let’s build the struct first in memory
BondExtraData memory tmpBondExtraData = idToBondExtraData[_tokenID];
uint80 newDna = getHalfDna(_tokenID, _permanentSeed);
tmpBondExtraData.finalHalfDna = newDna;
// Liquity Data
// Trove
tmpBondExtraData.troveSize = _uint256ToUint32(troveManager.getTroveDebt(_bonder));
// LQTY
uint256 pickleLQTYAmount;
if (pickleLQTYJar.totalSupply() > 0) {
pickleLQTYAmount = (pickleLQTYJar.balanceOf(_bonder) + pickleLQTYFarm.balanceOf(_bonder)) * pickleLQTYJar.getRatio();
}
tmpBondExtraData.lqtyAmount = _uint256ToUint32(
lqtyToken.balanceOf(_bonder) + lqtyStaking.stakes(_bonder) + pickleLQTYAmount
);
// Curve Gauge votes
(uint256 curveLUSD3CRVGaugeSlope,,) = curveGaugeController.vote_user_slopes(_bonder, curveLUSD3CRVGauge);
(uint256 curveLUSDFRAXGaugeSlope,,) = curveGaugeController.vote_user_slopes(_bonder, curveLUSDFRAXGauge);
tmpBondExtraData.curveGaugeSlopes = _uint256ToUint32((curveLUSD3CRVGaugeSlope + curveLUSDFRAXGaugeSlope) * CURVE_GAUGE_SLOPES_PRECISION);
// finally copy from memory to storage
idToBondExtraData[_tokenID] = tmpBondExtraData;
return newDna;
}
function getHalfDna(uint256 _tokenID, uint256 _permanentSeed) internal view returns (uint80) {
return uint80(uint256(keccak256(abi.encode(_tokenID, block.timestamp, _permanentSeed))));
}
function requireCallerIsChickenBondsManager() internal view {
require(msg.sender == address(chickenBondManager), "BondNFT: Caller must be ChickenBondManager");
}
function tokenURI(uint256 _tokenID) public view virtual override returns (string memory) {
require(_exists(_tokenID), "BondNFT: URI query for nonexistent token");
return address(artwork) != address(0) ? artwork.tokenURI(_tokenID, idToBondExtraData[_tokenID]) : "";
}
// Prevent transfers for a period of time after chickening in or out
function _beforeTokenTransfer(address _from, address _to, uint256 _tokenID) internal virtual override {
if (_from != address(0)) {
(,,, uint256 endTime, uint8 status) = chickenBondManager.getBondData(_tokenID);
require(
status == uint8(IChickenBondManager.BondStatus.active) ||
block.timestamp >= endTime + transferLockoutPeriodSeconds,
"BondNFT: cannot transfer during lockout period"
);
}
super._beforeTokenTransfer(_from, _to, _tokenID);
}
function getBondAmount(uint256 _tokenID) external view returns (uint256 amount) {
(amount,,,,) = chickenBondManager.getBondData(_tokenID);
}
function getBondClaimedBLUSD(uint256 _tokenID) external view returns (uint256 claimedBLUSD) {
(,claimedBLUSD,,,) = chickenBondManager.getBondData(_tokenID);
}
function getBondStartTime(uint256 _tokenID) external view returns (uint256 startTime) {
(,,startTime,,) = chickenBondManager.getBondData(_tokenID);
}
function getBondEndTime(uint256 _tokenID) external view returns (uint256 endTime) {
(,,, endTime,) = chickenBondManager.getBondData(_tokenID);
}
function getBondInitialHalfDna(uint256 _tokenID) external view returns (uint80 initialHalfDna) {
return idToBondExtraData[_tokenID].initialHalfDna;
}
function getBondInitialDna(uint256 _tokenID) external view returns (uint256 initialDna) {
return uint256(idToBondExtraData[_tokenID].initialHalfDna);
}
function getBondFinalHalfDna(uint256 _tokenID) external view returns (uint80 finalHalfDna) {
return idToBondExtraData[_tokenID].finalHalfDna;
}
function getBondFinalDna(uint256 _tokenID) external view returns (uint256 finalDna) {
BondExtraData memory bondExtraData = idToBondExtraData[_tokenID];
return (uint256(bondExtraData.initialHalfDna) << 128) + uint256(bondExtraData.finalHalfDna);
}
function getBondStatus(uint256 _tokenID) external view returns (uint8 status) {
(,,,, status) = chickenBondManager.getBondData(_tokenID);
}
function getBondExtraData(uint256 _tokenID)
external
view
returns (
uint80 initialHalfDna,
uint80 finalHalfDna,
uint32 troveSize,
uint32 lqtyAmount,
uint32 curveGaugeSlopes
)
{
BondExtraData memory bondExtraData = idToBondExtraData[_tokenID];
return (
bondExtraData.initialHalfDna,
bondExtraData.finalHalfDna,
bondExtraData.troveSize,
bondExtraData.lqtyAmount,
bondExtraData.curveGaugeSlopes
);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/ERC721Enumerable.sol)
pragma solidity ^0.8.0;
import "../ERC721.sol";
import "./IERC721Enumerable.sol";
/**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @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);
/**
* @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);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
/**
* @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 / b + (a % b == 0 ? 0 : 1);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.11;
// Common interface for the Trove Manager.
interface ITroveManager {
/*
function getTroveOwnersCount() external view returns (uint);
function getTroveFromTroveOwnersArray(uint _index) external view returns (address);
function getNominalICR(address _borrower) external view returns (uint);
function getCurrentICR(address _borrower, uint _price) external view returns (uint);
function liquidate(address _borrower) external;
function liquidateTroves(uint _n) external;
function batchLiquidateTroves(address[] calldata _troveArray) external;
function redeemCollateral(
uint _LUSDAmount,
address _firstRedemptionHint,
address _upperPartialRedemptionHint,
address _lowerPartialRedemptionHint,
uint _partialRedemptionHintNICR,
uint _maxIterations,
uint _maxFee
) external;
function updateStakeAndTotalStakes(address _borrower) external returns (uint);
function updateTroveRewardSnapshots(address _borrower) external;
function addTroveOwnerToArray(address _borrower) external returns (uint index);
function applyPendingRewards(address _borrower) external;
function getPendingETHReward(address _borrower) external view returns (uint);
function getPendingLUSDDebtReward(address _borrower) external view returns (uint);
function hasPendingRewards(address _borrower) external view returns (bool);
function getEntireDebtAndColl(address _borrower) external view returns (
uint debt,
uint coll,
uint pendingLUSDDebtReward,
uint pendingETHReward
);
function closeTrove(address _borrower) external;
function removeStake(address _borrower) external;
function getRedemptionRate() external view returns (uint);
function getRedemptionRateWithDecay() external view returns (uint);
function getRedemptionFeeWithDecay(uint _ETHDrawn) external view returns (uint);
function getBorrowingRate() external view returns (uint);
function getBorrowingRateWithDecay() external view returns (uint);
function getBorrowingFee(uint LUSDDebt) external view returns (uint);
function getBorrowingFeeWithDecay(uint _LUSDDebt) external view returns (uint);
function decayBaseRateFromBorrowing() external;
function getTroveStatus(address _borrower) external view returns (uint);
function getTroveStake(address _borrower) external view returns (uint);
*/
function getTroveDebt(address _borrower) external view returns (uint);
/*
function getTroveColl(address _borrower) external view returns (uint);
function setTroveStatus(address _borrower, uint num) external;
function increaseTroveColl(address _borrower, uint _collIncrease) external returns (uint);
function decreaseTroveColl(address _borrower, uint _collDecrease) external returns (uint);
function increaseTroveDebt(address _borrower, uint _debtIncrease) external returns (uint);
function decreaseTroveDebt(address _borrower, uint _collDecrease) external returns (uint);
function getTCR(uint _price) external view returns (uint);
function checkRecoveryMode(uint _price) external view returns (bool);
*/
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.11;
interface ILQTYStaking {
/*
function stake(uint _LQTYamount) external;
function unstake(uint _LQTYamount) external;
function increaseF_ETH(uint _ETHFee) external;
function increaseF_LUSD(uint _LQTYFee) external;
function getPendingETHGain(address _user) external view returns (uint);
function getPendingLUSDGain(address _user) external view returns (uint);
*/
function stakes(address) external view returns (uint256);
}
pragma solidity ^0.8.11;
import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
interface IPickleJar is IERC20 {
function getRatio() external view returns (uint256);
}
pragma solidity ^0.8.11;
interface ICurveGaugeController {
function vote_user_slopes(address, address) external view returns (uint256, uint256, uint256);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;
import "../Interfaces/IBondNFT.sol";
interface IBondNFTArtwork {
function tokenURI(uint256 _tokenID, IBondNFT.BondExtraData calldata _bondExtraData) external view returns (string memory);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;
import "openzeppelin-contracts/contracts/token/ERC721/extensions/IERC721Enumerable.sol";
import "./IChickenBondManager.sol";
interface IBondNFT is IERC721Enumerable {
struct BondExtraData {
uint80 initialHalfDna;
uint80 finalHalfDna;
uint32 troveSize; // Debt in LUSD
uint32 lqtyAmount; // Holding LQTY, staking or deposited into Pickle
uint32 curveGaugeSlopes; // For 3CRV and Frax pools combined
}
function mint(address _bonder, uint256 _permanentSeed) external returns (uint256, uint80);
function setFinalExtraData(address _bonder, uint256 _tokenID, uint256 _permanentSeed) external returns (uint80);
function chickenBondManager() external view returns (IChickenBondManager);
function getBondAmount(uint256 _tokenID) external view returns (uint256 amount);
function getBondStartTime(uint256 _tokenID) external view returns (uint256 startTime);
function getBondEndTime(uint256 _tokenID) external view returns (uint256 endTime);
function getBondInitialHalfDna(uint256 _tokenID) external view returns (uint80 initialHalfDna);
function getBondInitialDna(uint256 _tokenID) external view returns (uint256 initialDna);
function getBondFinalHalfDna(uint256 _tokenID) external view returns (uint80 finalHalfDna);
function getBondFinalDna(uint256 _tokenID) external view returns (uint256 finalDna);
function getBondStatus(uint256 _tokenID) external view returns (uint8 status);
function getBondExtraData(uint256 _tokenID) external view returns (uint80 initialHalfDna, uint80 finalHalfDna, uint32 troveSize, uint32 lqtyAmount, uint32 curveGaugeSlopes);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overridden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
_afterTokenTransfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
_afterTokenTransfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
_afterTokenTransfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts 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: GPL-3.0
pragma solidity ^0.8.10;
import "./ILUSDToken.sol";
import "./IBLUSDToken.sol";
import "./ICurvePool.sol";
import "./IYearnVault.sol";
import "./IBAMM.sol";
interface IChickenBondManager {
// Valid values for `status` returned by `getBondData()`
enum BondStatus {
nonExistent,
active,
chickenedOut,
chickenedIn
}
function lusdToken() external view returns (ILUSDToken);
function bLUSDToken() external view returns (IBLUSDToken);
function curvePool() external view returns (ICurvePool);
function bammSPVault() external view returns (IBAMM);
function yearnCurveVault() external view returns (IYearnVault);
// constants
function INDEX_OF_LUSD_TOKEN_IN_CURVE_POOL() external pure returns (int128);
function createBond(uint256 _lusdAmount) external returns (uint256);
function createBondWithPermit(
address owner,
uint256 amount,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256);
function chickenOut(uint256 _bondID, uint256 _minLUSD) external;
function chickenIn(uint256 _bondID) external;
function redeem(uint256 _bLUSDToRedeem, uint256 _minLUSDFromBAMMSPVault) external returns (uint256, uint256);
// getters
function calcRedemptionFeePercentage(uint256 _fractionOfBLUSDToRedeem) external view returns (uint256);
function getBondData(uint256 _bondID) external view returns (uint256 lusdAmount, uint64 claimedBLUSD, uint64 startTime, uint64 endTime, uint8 status);
function getLUSDToAcquire(uint256 _bondID) external view returns (uint256);
function calcAccruedBLUSD(uint256 _bondID) external view returns (uint256);
function calcBondBLUSDCap(uint256 _bondID) external view returns (uint256);
function getLUSDInBAMMSPVault() external view returns (uint256);
function calcTotalYearnCurveVaultShareValue() external view returns (uint256);
function calcTotalLUSDValue() external view returns (uint256);
function getPendingLUSD() external view returns (uint256);
function getAcquiredLUSDInSP() external view returns (uint256);
function getAcquiredLUSDInCurve() external view returns (uint256);
function getTotalAcquiredLUSD() external view returns (uint256);
function getPermanentLUSD() external view returns (uint256);
function getOwnedLUSDInSP() external view returns (uint256);
function getOwnedLUSDInCurve() external view returns (uint256);
function calcSystemBackingRatio() external view returns (uint256);
function calcUpdatedAccrualParameter() external view returns (uint256);
function getBAMMLUSDDebt() external view returns (uint256);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "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");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(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) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(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) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason 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 {
// 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
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/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// 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
pragma solidity ^0.8.10;
import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
interface ILUSDToken is IERC20 {
// --- Events ---
event TroveManagerAddressChanged(address _troveManagerAddress);
event StabilityPoolAddressChanged(address _newStabilityPoolAddress);
event BorrowerOperationsAddressChanged(address _newBorrowerOperationsAddress);
event LUSDTokenBalanceUpdated(address _user, uint _amount);
// --- Functions ---
function mint(address _account, uint256 _amount) external;
function burn(address _account, uint256 _amount) external;
function sendToPool(address _sender, address poolAddress, uint256 _amount) external;
function returnFromPool(address poolAddress, address user, uint256 _amount ) external;
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;
import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
interface IBLUSDToken is IERC20 {
function mint(address _to, uint256 _bLUSDAmount) external;
function burn(address _from, uint256 _bLUSDAmount) external;
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;
import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
interface ICurvePool is IERC20 {
function add_liquidity(uint256[2] memory _amounts, uint256 _min_mint_amount) external returns (uint256 mint_amount);
function remove_liquidity(uint256 burn_amount, uint256[2] memory _min_amounts) external;
function remove_liquidity_one_coin(uint256 _burn_amount, int128 i, uint256 _min_received) external;
function exchange(int128 i, int128 j, uint256 dx, uint256 min_dy, address _receiver) external returns (uint256);
function exchange_underlying(int128 i, int128 j, uint256 dx, uint256 min_dy, address _receiver) external returns (uint256);
function calc_withdraw_one_coin(uint256 _burn_amount, int128 i) external view returns (uint256);
function calc_token_amount(uint256[2] memory _amounts, bool _is_deposit) external view returns (uint256);
function balances(uint256 arg0) external view returns (uint256);
function token() external view returns (address);
function totalSupply() external view returns (uint256);
function get_dy(int128 i,int128 j, uint256 dx) external view returns (uint256);
function get_dy_underlying(int128 i,int128 j, uint256 dx) external view returns (uint256);
function get_virtual_price() external view returns (uint256);
function fee() external view returns (uint256);
function D() external returns (uint256);
function future_A_gamma_time() external returns (uint256);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;
import "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";
interface IYearnVault is IERC20 {
function deposit(uint256 _tokenAmount) external returns (uint256);
function withdraw(uint256 _tokenAmount) external returns (uint256);
function lastReport() external view returns (uint256);
function totalDebt() external view returns (uint256);
function calcTokenToYToken(uint256 _tokenAmount) external pure returns (uint256);
function token() external view returns (address);
function availableDepositLimit() external view returns (uint256);
function pricePerShare() external view returns (uint256);
function name() external view returns (string memory);
function setDepositLimit(uint256 limit) external;
function withdrawalQueue(uint256) external returns (address);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.10;
interface IBAMM {
function deposit(uint256 lusdAmount) external;
function withdraw(uint256 lusdAmount, address to) external;
function swap(uint lusdAmount, uint minEthReturn, address payable dest) external returns(uint);
function getSwapEthAmount(uint lusdQty) external view returns(uint ethAmount, uint feeLusdAmount);
function getLUSDValue() external view returns (uint256, uint256, uint256);
function setChicken(address _chicken) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}