编译器
0.8.17+commit.8df45f5f
文件 1 的 33：Address.sol
pragma solidity ^0.8.1;
library Address {
function isContract(address account) internal view returns (bool) {
return account.code.length > 0;
}
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");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
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");
}
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);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
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);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
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);
}
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
文件 2 的 33：ArrayLib.sol
pragma solidity >=0.8.0;
library ArrayLib {
function sum(uint256[] memory input) internal pure returns (uint256) {
uint256 value = 0;
for (uint256 i = 0; i < input.length; ) {
value += input[i];
unchecked {
i++;
}
}
return value;
}
function find(address[] memory array, address element) internal pure returns (uint256 index) {
uint256 length = array.length;
for (uint256 i = 0; i < length; ) {
if (array[i] == element) return i;
unchecked {
i++;
}
}
return type(uint256).max;
}
function contains(address[] memory array, address element) internal pure returns (bool) {
uint256 length = array.length;
for (uint256 i = 0; i < length; ) {
if (array[i] == element) return true;
unchecked {
i++;
}
}
return false;
}
function append(address[] memory inp, address element)
internal
pure
returns (address[] memory out)
{
uint256 length = inp.length;
out = new address[](length + 1);
for (uint256 i = 0; i < length; ) {
out[i] = inp[i];
unchecked {
i++;
}
}
out[length] = element;
}
}
文件 3 的 33：Context.sol
pragma solidity ^0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
文件 4 的 33：Counters.sol
pragma solidity ^0.8.0;
library Counters {
struct Counter {
uint256 _value;
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
counter._value += 1;
}
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
unchecked {
counter._value = value - 1;
}
}
function reset(Counter storage counter) internal {
counter._value = 0;
}
}
文件 5 的 33：ECDSA.sol
pragma solidity ^0.8.0;
import "../Strings.sol";
library ECDSA {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return;
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
} else if (error == RecoverError.InvalidSignatureS) {
revert("ECDSA: invalid signature 's' value");
} else if (error == RecoverError.InvalidSignatureV) {
revert("ECDSA: invalid signature 'v' value");
}
}
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return tryRecover(hash, v, r, s);
} else {
return (address(0), RecoverError.InvalidSignatureLength);
}
}
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
return recovered;
}
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address, RecoverError) {
bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
uint8 v = uint8((uint256(vs) >> 255) + 27);
return tryRecover(hash, v, r, s);
}
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address, RecoverError) {
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS);
}
if (v != 27 && v != 28) {
return (address(0), RecoverError.InvalidSignatureV);
}
address signer = ecrecover(hash, v, r, s);
if (signer == address(0)) {
return (address(0), RecoverError.InvalidSignature);
}
return (signer, RecoverError.NoError);
}
function recover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
_throwError(error);
return recovered;
}
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
}
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
文件 6 的 33：ERC20.sol
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
文件 7 的 33：Errors.sol
pragma solidity 0.8.17;
library Errors {
error BulkInsufficientSyForTrade(uint256 currentAmount, uint256 requiredAmount);
error BulkInsufficientTokenForTrade(uint256 currentAmount, uint256 requiredAmount);
error BulkInSufficientSyOut(uint256 actualSyOut, uint256 requiredSyOut);
error BulkInSufficientTokenOut(uint256 actualTokenOut, uint256 requiredTokenOut);
error BulkInsufficientSyReceived(uint256 actualBalance, uint256 requiredBalance);
error BulkNotMaintainer();
error BulkNotAdmin();
error BulkSellerAlreadyExisted(address token, address SY, address bulk);
error BulkSellerInvalidToken(address token, address SY);
error BulkBadRateTokenToSy(uint256 actualRate, uint256 currentRate, uint256 eps);
error BulkBadRateSyToToken(uint256 actualRate, uint256 currentRate, uint256 eps);
error ApproxFail();
error ApproxParamsInvalid(uint256 guessMin, uint256 guessMax, uint256 eps);
error ApproxBinarySearchInputInvalid(
uint256 approxGuessMin,
uint256 approxGuessMax,
uint256 minGuessMin,
uint256 maxGuessMax
);
error MarketExpired();
error MarketZeroAmountsInput();
error MarketZeroAmountsOutput();
error MarketZeroLnImpliedRate();
error MarketInsufficientPtForTrade(int256 currentAmount, int256 requiredAmount);
error MarketInsufficientPtReceived(uint256 actualBalance, uint256 requiredBalance);
error MarketInsufficientSyReceived(uint256 actualBalance, uint256 requiredBalance);
error MarketZeroTotalPtOrTotalAsset(int256 totalPt, int256 totalAsset);
error MarketExchangeRateBelowOne(int256 exchangeRate);
error MarketProportionMustNotEqualOne();
error MarketRateScalarBelowZero(int256 rateScalar);
error MarketScalarRootBelowZero(int256 scalarRoot);
error MarketProportionTooHigh(int256 proportion, int256 maxProportion);
error OracleUninitialized();
error OracleTargetTooOld(uint32 target, uint32 oldest);
error OracleZeroCardinality();
error MarketFactoryExpiredPt();
error MarketFactoryInvalidPt();
error MarketFactoryMarketExists();
error MarketFactoryLnFeeRateRootTooHigh(uint80 lnFeeRateRoot, uint256 maxLnFeeRateRoot);
error MarketFactoryReserveFeePercentTooHigh(
uint8 reserveFeePercent,
uint8 maxReserveFeePercent
);
error MarketFactoryZeroTreasury();
error MarketFactoryInitialAnchorTooLow(int256 initialAnchor, int256 minInitialAnchor);
error RouterInsufficientLpOut(uint256 actualLpOut, uint256 requiredLpOut);
error RouterInsufficientSyOut(uint256 actualSyOut, uint256 requiredSyOut);
error RouterInsufficientPtOut(uint256 actualPtOut, uint256 requiredPtOut);
error RouterInsufficientYtOut(uint256 actualYtOut, uint256 requiredYtOut);
error RouterInsufficientPYOut(uint256 actualPYOut, uint256 requiredPYOut);
error RouterInsufficientTokenOut(uint256 actualTokenOut, uint256 requiredTokenOut);
error RouterExceededLimitSyIn(uint256 actualSyIn, uint256 limitSyIn);
error RouterExceededLimitPtIn(uint256 actualPtIn, uint256 limitPtIn);
error RouterExceededLimitYtIn(uint256 actualYtIn, uint256 limitYtIn);
error RouterInsufficientSyRepay(uint256 actualSyRepay, uint256 requiredSyRepay);
error RouterInsufficientPtRepay(uint256 actualPtRepay, uint256 requiredPtRepay);
error RouterNotAllSyUsed(uint256 netSyDesired, uint256 netSyUsed);
error RouterTimeRangeZero();
error RouterCallbackNotPendleMarket(address caller);
error RouterInvalidAction(bytes4 selector);
error RouterInvalidFacet(address facet);
error RouterKyberSwapDataZero();
error YCExpired();
error YCNotExpired();
error YieldContractInsufficientSy(uint256 actualSy, uint256 requiredSy);
error YCNothingToRedeem();
error YCPostExpiryDataNotSet();
error YCNoFloatingSy();
error YCFactoryInvalidExpiry();
error YCFactoryYieldContractExisted();
error YCFactoryZeroExpiryDivisor();
error YCFactoryZeroTreasury();
error YCFactoryInterestFeeRateTooHigh(uint256 interestFeeRate, uint256 maxInterestFeeRate);
error YCFactoryRewardFeeRateTooHigh(uint256 newRewardFeeRate, uint256 maxRewardFeeRate);
error SYInvalidTokenIn(address token);
error SYInvalidTokenOut(address token);
error SYZeroDeposit();
error SYZeroRedeem();
error SYInsufficientSharesOut(uint256 actualSharesOut, uint256 requiredSharesOut);
error SYInsufficientTokenOut(uint256 actualTokenOut, uint256 requiredTokenOut);
error SYQiTokenMintFailed(uint256 errCode);
error SYQiTokenRedeemFailed(uint256 errCode);
error SYQiTokenRedeemRewardsFailed(uint256 rewardAccruedType0, uint256 rewardAccruedType1);
error SYQiTokenBorrowRateTooHigh(uint256 borrowRate, uint256 borrowRateMax);
error SYCurveInvalidPid();
error SYCurve3crvPoolNotFound();
error SYApeDepositAmountTooSmall(uint256 amountDeposited);
error SYBalancerInvalidPid();
error SYInvalidRewardToken(address token);
error VCInactivePool(address pool);
error VCPoolAlreadyActive(address pool);
error VCZeroVePendle(address user);
error VCExceededMaxWeight(uint256 totalWeight, uint256 maxWeight);
error VCEpochNotFinalized(uint256 wTime);
error VCPoolAlreadyAddAndRemoved(address pool);
error VEInvalidNewExpiry(uint256 newExpiry);
error VEExceededMaxLockTime();
error VEInsufficientLockTime();
error VENotAllowedReduceExpiry();
error VEZeroAmountLocked();
error VEPositionNotExpired();
error VEZeroPosition();
error VEZeroSlope(uint128 bias, uint128 slope);
error VEReceiveOldSupply(uint256 msgTime);
error GCNotPendleMarket(address caller);
error GCNotVotingController(address caller);
error InvalidWTime(uint256 wTime);
error ExpiryInThePast(uint256 expiry);
error ChainNotSupported(uint256 chainId);
error FDTotalAmountFundedNotMatch(uint256 actualTotalAmount, uint256 expectedTotalAmount);
error FDEpochLengthMismatch();
error FDInvalidPool(address pool);
error FDPoolAlreadyExists(address pool);
error FDInvalidNewFinishedEpoch(uint256 oldFinishedEpoch, uint256 newFinishedEpoch);
error FDInvalidStartEpoch(uint256 startEpoch);
error FDInvalidWTimeFund(uint256 lastFunded, uint256 wTime);
error FDFutureFunding(uint256 lastFunded, uint256 currentWTime);
error BDInvalidEpoch(uint256 epoch, uint256 startTime);
error MsgNotFromSendEndpoint(uint16 srcChainId, bytes path);
error MsgNotFromReceiveEndpoint(address sender);
error InsufficientFeeToSendMsg(uint256 currentFee, uint256 requiredFee);
error ApproxDstExecutionGasNotSet();
error InvalidRetryData();
error ArrayLengthMismatch();
error ArrayEmpty();
error ArrayOutOfBounds();
error ZeroAddress();
error FailedToSendEther();
error OnlyLayerZeroEndpoint();
error OnlyYT();
error OnlyYCFactory();
error OnlyWhitelisted();
error SAInsufficientTokenIn(address tokenIn, uint256 amountExpected, uint256 amountActual);
error UnsupportedSelector(uint256 aggregatorType, bytes4 selector);
}
文件 8 的 33：IERC20.sol
pragma solidity ^0.8.0;
interface IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
}
文件 9 的 33：IERC20Metadata.sol
pragma solidity ^0.8.0;
import "../IERC20.sol";
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
文件 10 的 33：IPInterestManagerYT.sol
pragma solidity 0.8.17;
interface IPInterestManagerYT {
function userInterest(address user)
external
view
returns (uint128 lastPYIndex, uint128 accruedInterest);
}
文件 11 的 33：IPInterestManagerYTV2.sol
pragma solidity 0.8.17;
interface IPInterestManagerYTV2 {
function userInterest(address user)
external
view
returns (
uint128 lastInterestIndex,
uint128 accruedInterest,
uint256 lastPYIndex
);
}
文件 12 的 33：IPPrincipalToken.sol
pragma solidity 0.8.17;
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
interface IPPrincipalToken is IERC20Metadata {
function burnByYT(address user, uint256 amount) external;
function mintByYT(address user, uint256 amount) external;
function initialize(address _YT) external;
function SY() external view returns (address);
function YT() external view returns (address);
function factory() external view returns (address);
function expiry() external view returns (uint256);
function isExpired() external view returns (bool);
}
文件 13 的 33：IPYieldContractFactory.sol
pragma solidity 0.8.17;
interface IPYieldContractFactory {
event CreateYieldContract(address indexed SY, uint256 indexed expiry, address PT, address YT);
event SetExpiryDivisor(uint256 newExpiryDivisor);
event SetInterestFeeRate(uint256 newInterestFeeRate);
event SetRewardFeeRate(uint256 newRewardFeeRate);
event SetTreasury(address indexed treasury);
function getPT(address SY, uint256 expiry) external view returns (address);
function getYT(address SY, uint256 expiry) external view returns (address);
function expiryDivisor() external view returns (uint96);
function interestFeeRate() external view returns (uint128);
function rewardFeeRate() external view returns (uint128);
function treasury() external view returns (address);
function isPT(address) external view returns (bool);
function isYT(address) external view returns (bool);
}
文件 14 的 33：IPYieldToken.sol
pragma solidity 0.8.17;
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "./IRewardManager.sol";
import "./IPInterestManagerYT.sol";
interface IPYieldToken is IERC20Metadata, IRewardManager, IPInterestManagerYT {
event NewInterestIndex(uint256 indexed newIndex);
event Mint(
address indexed caller,
address indexed receiverPT,
address indexed receiverYT,
uint256 amountSyToMint,
uint256 amountPYOut
);
event Burn(
address indexed caller,
address indexed receiver,
uint256 amountPYToRedeem,
uint256 amountSyOut
);
event RedeemRewards(address indexed user, uint256[] amountRewardsOut);
event RedeemInterest(address indexed user, uint256 interestOut);
event WithdrawFeeToTreasury(uint256[] amountRewardsOut, uint256 syOut);
function mintPY(address receiverPT, address receiverYT) external returns (uint256 amountPYOut);
function redeemPY(address receiver) external returns (uint256 amountSyOut);
function redeemPYMulti(address[] calldata receivers, uint256[] calldata amountPYToRedeems)
external
returns (uint256[] memory amountSyOuts);
function redeemDueInterestAndRewards(
address user,
bool redeemInterest,
bool redeemRewards
) external returns (uint256 interestOut, uint256[] memory rewardsOut);
function rewardIndexesCurrent() external returns (uint256[] memory);
function pyIndexCurrent() external returns (uint256);
function pyIndexStored() external view returns (uint256);
function getRewardTokens() external view returns (address[] memory);
function SY() external view returns (address);
function PT() external view returns (address);
function factory() external view returns (address);
function expiry() external view returns (uint256);
function isExpired() external view returns (bool);
function doCacheIndexSameBlock() external view returns (bool);
}
文件 15 的 33：IPYieldTokenV2.sol
pragma solidity 0.8.17;
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "./IRewardManager.sol";
import "./IPInterestManagerYTV2.sol";
interface IPYieldTokenV2 is IERC20Metadata, IRewardManager, IPInterestManagerYTV2 {
event Mint(
address indexed caller,
address indexed receiverPT,
address indexed receiverYT,
uint256 amountSyToMint,
uint256 amountPYOut
);
event Burn(
address indexed caller,
address indexed receiver,
uint256 amountPYToRedeem,
uint256 amountSyOut
);
event RedeemRewards(address indexed user, uint256[] amountRewardsOut);
event RedeemInterest(address indexed user, uint256 interestOut);
event WithdrawFeeToTreasury(uint256[] amountRewardsOut, uint256 syOut);
event CollectInterestFee(uint256 amountInterestFee);
event CollectRewardFee(address indexed rewardToken, uint256 amountRewardFee);
function mintPY(address receiverPT, address receiverYT) external returns (uint256 amountPYOut);
function redeemPY(address receiver) external returns (uint256 amountSyOut);
function redeemPYMulti(address[] calldata receivers, uint256[] calldata amountPYToRedeems)
external
returns (uint256[] memory amountSyOuts);
function redeemDueInterestAndRewards(
address user,
bool redeemInterest,
bool redeemRewards
) external returns (uint256 interestOut, uint256[] memory rewardsOut);
function rewardIndexesCurrent() external returns (uint256[] memory);
function pyIndexCurrent() external returns (uint256);
function pyIndexStored() external view returns (uint256);
function getRewardTokens() external view returns (address[] memory);
function SY() external view returns (address);
function PT() external view returns (address);
function factory() external view returns (address);
function expiry() external view returns (uint256);
function isExpired() external view returns (bool);
function doCacheIndexSameBlock() external view returns (bool);
}
文件 16 的 33：IRewardManager.sol
pragma solidity 0.8.17;
interface IRewardManager {
function userReward(address token, address user)
external
view
returns (uint128 index, uint128 accrued);
}
文件 17 的 33：IStandardizedYield.sol
pragma solidity 0.8.17;
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
interface IStandardizedYield is IERC20Metadata {
event Deposit(
address indexed caller,
address indexed receiver,
address indexed tokenIn,
uint256 amountDeposited,
uint256 amountSyOut
);
event Redeem(
address indexed caller,
address indexed receiver,
address indexed tokenOut,
uint256 amountSyToRedeem,
uint256 amountTokenOut
);
enum AssetType {
TOKEN,
LIQUIDITY
}
event ClaimRewards(address indexed user, address[] rewardTokens, uint256[] rewardAmounts);
function deposit(
address receiver,
address tokenIn,
uint256 amountTokenToDeposit,
uint256 minSharesOut
) external payable returns (uint256 amountSharesOut);
function redeem(
address receiver,
uint256 amountSharesToRedeem,
address tokenOut,
uint256 minTokenOut,
bool burnFromInternalBalance
) external returns (uint256 amountTokenOut);
function exchangeRate() external view returns (uint256 res);
function claimRewards(address user) external returns (uint256[] memory rewardAmounts);
function accruedRewards(address user) external view returns (uint256[] memory rewardAmounts);
function rewardIndexesCurrent() external returns (uint256[] memory indexes);
function rewardIndexesStored() external view returns (uint256[] memory indexes);
function getRewardTokens() external view returns (address[] memory);
function yieldToken() external view returns (address);
function getTokensIn() external view returns (address[] memory res);
function getTokensOut() external view returns (address[] memory res);
function isValidTokenIn(address token) external view returns (bool);
function isValidTokenOut(address token) external view returns (bool);
function previewDeposit(address tokenIn, uint256 amountTokenToDeposit)
external
view
returns (uint256 amountSharesOut);
function previewRedeem(address tokenOut, uint256 amountSharesToRedeem)
external
view
returns (uint256 amountTokenOut);
function assetInfo()
external
view
returns (
AssetType assetType,
address assetAddress,
uint8 assetDecimals
);
}
文件 18 的 33：IWETH.sol
pragma solidity 0.8.17;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface IWETH is IERC20 {
event Deposit(address indexed dst, uint256 wad);
event Withdrawal(address indexed src, uint256 wad);
function deposit() external payable;
function withdraw(uint256 wad) external;
}
文件 19 的 33：InterestManagerYTV2.sol
pragma solidity 0.8.17;
import "../../interfaces/IPYieldToken.sol";
import "../../interfaces/IPPrincipalToken.sol";
import "../../interfaces/IPInterestManagerYTV2.sol";
import "../../interfaces/IPYieldContractFactory.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "../libraries/math/Math.sol";
import "../libraries/TokenHelper.sol";
import "../StandardizedYield/SYUtils.sol";
abstract contract InterestManagerYTV2 is TokenHelper, IPInterestManagerYTV2 {
using Math for uint256;
struct UserInterest {
uint128 index;
uint128 accrued;
uint256 pyIndex;
}
uint256 public lastInterestBlock;
uint256 public globalInterestIndex;
mapping(address => UserInterest) public userInterest;
uint256 internal constant INITIAL_INTEREST_INDEX = 1;
function _updateAndDistributeInterest(address user) internal virtual {
_updateAndDistributeInterestForTwo(user, address(0));
}
function _updateAndDistributeInterestForTwo(address user1, address user2) internal virtual {
(uint256 index, uint256 pyIndex) = _updateInterestIndex();
if (user1 != address(0) && user1 != address(this))
_distributeInterestPrivate(user1, index, pyIndex);
if (user2 != address(0) && user2 != address(this))
_distributeInterestPrivate(user2, index, pyIndex);
}
function _doTransferOutInterest(address user, address SY)
internal
returns (uint256 interestAmount)
{
interestAmount = userInterest[user].accrued;
userInterest[user].accrued = 0;
_transferOut(SY, user, interestAmount);
}
function _distributeInterestPrivate(
address user,
uint256 currentIndex,
uint256 pyIndex
) private {
assert(user != address(0) && user != address(this));
uint256 prevIndex = userInterest[user].index;
if (prevIndex == currentIndex) return;
if (prevIndex == 0) {
userInterest[user].index = currentIndex.Uint128();
userInterest[user].pyIndex = pyIndex;
return;
}
userInterest[user].accrued += _YTbalance(user).mulDown(currentIndex - prevIndex).Uint128();
userInterest[user].index = currentIndex.Uint128();
userInterest[user].pyIndex = pyIndex;
}
function _updateInterestIndex() internal returns (uint256 index, uint256 pyIndex) {
if (lastInterestBlock != block.number) {
lastInterestBlock = block.number;
uint256 totalShares = _YTSupply();
uint256 accrued;
(accrued, pyIndex) = _collectInterest();
index = globalInterestIndex;
if (index == 0) index = INITIAL_INTEREST_INDEX;
if (totalShares != 0) index += accrued.divDown(totalShares);
globalInterestIndex = index;
} else {
index = globalInterestIndex;
pyIndex = _getGlobalPYIndex();
}
}
function _getGlobalPYIndex() internal view virtual returns (uint256);
function _collectInterest() internal virtual returns (uint256, uint256);
function _YTbalance(address user) internal view virtual returns (uint256);
function _YTSupply() internal view virtual returns (uint256);
}
文件 20 的 33：Math.sol
pragma solidity 0.8.17;
library Math {
uint256 internal constant ONE = 1e18;
int256 internal constant IONE = 1e18;
function subMax0(uint256 a, uint256 b) internal pure returns (uint256) {
unchecked {
return (a >= b ? a - b : 0);
}
}
function subNoNeg(int256 a, int256 b) internal pure returns (int256) {
require(a >= b, "negative");
return a - b;
}
function mulDown(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 product = a * b;
unchecked {
return product / ONE;
}
}
function mulDown(int256 a, int256 b) internal pure returns (int256) {
int256 product = a * b;
unchecked {
return product / IONE;
}
}
function divDown(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 aInflated = a * ONE;
unchecked {
return aInflated / b;
}
}
function divDown(int256 a, int256 b) internal pure returns (int256) {
int256 aInflated = a * IONE;
unchecked {
return aInflated / b;
}
}
function rawDivUp(uint256 a, uint256 b) internal pure returns (uint256) {
return (a + b - 1) / b;
}
function sqrt(uint256 y) internal pure returns (uint256 z) {
if (y > 3) {
z = y;
uint256 x = y / 2 + 1;
while (x < z) {
z = x;
x = (y / x + x) / 2;
}
} else if (y != 0) {
z = 1;
}
}
function abs(int256 x) internal pure returns (uint256) {
return uint256(x > 0 ? x : -x);
}
function neg(int256 x) internal pure returns (int256) {
return x * (-1);
}
function neg(uint256 x) internal pure returns (int256) {
return Int(x) * (-1);
}
function max(uint256 x, uint256 y) internal pure returns (uint256) {
return (x > y ? x : y);
}
function max(int256 x, int256 y) internal pure returns (int256) {
return (x > y ? x : y);
}
function min(uint256 x, uint256 y) internal pure returns (uint256) {
return (x < y ? x : y);
}
function min(int256 x, int256 y) internal pure returns (int256) {
return (x < y ? x : y);
}
function Int(uint256 x) internal pure returns (int256) {
require(x <= uint256(type(int256).max));
return int256(x);
}
function Int128(int256 x) internal pure returns (int128) {
require(type(int128).min <= x && x <= type(int128).max);
return int128(x);
}
function Int128(uint256 x) internal pure returns (int128) {
return Int128(Int(x));
}
function Uint(int256 x) internal pure returns (uint256) {
require(x >= 0);
return uint256(x);
}
function Uint32(uint256 x) internal pure returns (uint32) {
require(x <= type(uint32).max);
return uint32(x);
}
function Uint112(uint256 x) internal pure returns (uint112) {
require(x <= type(uint112).max);
return uint112(x);
}
function Uint96(uint256 x) internal pure returns (uint96) {
require(x <= type(uint96).max);
return uint96(x);
}
function Uint128(uint256 x) internal pure returns (uint128) {
require(x <= type(uint128).max);
return uint128(x);
}
function isAApproxB(
uint256 a,
uint256 b,
uint256 eps
) internal pure returns (bool) {
return mulDown(b, ONE - eps) <= a && a <= mulDown(b, ONE + eps);
}
function isAGreaterApproxB(
uint256 a,
uint256 b,
uint256 eps
) internal pure returns (bool) {
return a >= b && a <= mulDown(b, ONE + eps);
}
function isASmallerApproxB(
uint256 a,
uint256 b,
uint256 eps
) internal pure returns (bool) {
return a <= b && a >= mulDown(b, ONE - eps);
}
}
文件 21 的 33：MiniHelpers.sol
pragma solidity 0.8.17;
library MiniHelpers {
function isCurrentlyExpired(uint256 expiry) internal view returns (bool) {
return (expiry <= block.timestamp);
}
function isExpired(uint256 expiry, uint256 blockTime) internal pure returns (bool) {
return (expiry <= blockTime);
}
function isTimeInThePast(uint256 timestamp) internal view returns (bool) {
return (timestamp <= block.timestamp);
}
}
文件 22 的 33：PendleERC20.sol
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "@openzeppelin/contracts/utils/Context.sol";
contract PendleERC20 is Context, IERC20, IERC20Metadata {
uint8 private constant _NOT_ENTERED = 1;
uint8 private constant _ENTERED = 2;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint248 private _totalSupply;
uint8 private _status;
string private _name;
string private _symbol;
uint8 public immutable decimals;
modifier nonReentrant() {
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
_status = _ENTERED;
_;
_status = _NOT_ENTERED;
}
constructor(
string memory name_,
string memory symbol_,
uint8 decimals_
) {
_name = name_;
_symbol = symbol_;
decimals = decimals_;
_status = _NOT_ENTERED;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address to, uint256 amount)
external
virtual
override
nonReentrant
returns (bool)
{
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
function allowance(address owner, address spender)
public
view
virtual
override
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) external virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
function transferFrom(
address from,
address to,
uint256 amount
) external virtual override nonReentrant returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(from != to, "ERC20: transfer to self");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += toUint248(amount);
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= toUint248(amount);
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
function toUint248(uint256 x) internal virtual returns (uint248) {
require(x <= type(uint248).max);
return uint248(x);
}
}
文件 23 的 33：PendleERC20Permit.sol
pragma solidity ^0.8.0;
import "./PendleERC20.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/token/ERC20/extensions/draft-ERC20Permit.sol";
import "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
contract PendleERC20Permit is PendleERC20, IERC20Permit, EIP712 {
using Counters for Counters.Counter;
mapping(address => Counters.Counter) private _nonces;
bytes32 private constant _PERMIT_TYPEHASH =
keccak256(
"Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
);
constructor(
string memory name_,
string memory symbol_,
uint8 decimals_
) PendleERC20(name_, symbol_, decimals_) EIP712(name_, "1") {}
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public virtual override {
require(block.timestamp <= deadline, "ERC20Permit: expired deadline");
bytes32 structHash = keccak256(
abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline)
);
bytes32 hash = _hashTypedDataV4(structHash);
address signer = ECDSA.recover(hash, v, r, s);
require(signer == owner, "ERC20Permit: invalid signature");
_approve(owner, spender, value);
}
function nonces(address owner) public view virtual override returns (uint256) {
return _nonces[owner].current();
}
function DOMAIN_SEPARATOR() external view override returns (bytes32) {
return _domainSeparatorV4();
}
function _useNonce(address owner) internal virtual returns (uint256 current) {
Counters.Counter storage nonce = _nonces[owner];
current = nonce.current();
nonce.increment();
}
}
文件 24 的 33：PendleYieldTokenV2.sol
pragma solidity 0.8.17;
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "../../interfaces/IStandardizedYield.sol";
import "../../interfaces/IPYieldTokenV2.sol";
import "../../interfaces/IPPrincipalToken.sol";
import "../libraries/math/Math.sol";
import "../libraries/ArrayLib.sol";
import "../../interfaces/IPYieldContractFactory.sol";
import "../StandardizedYield/SYUtils.sol";
import "../libraries/Errors.sol";
import "../libraries/MiniHelpers.sol";
import "../RewardManager/RewardManager.sol";
import "../erc20/PendleERC20Permit.sol";
import "./InterestManagerYTV2.sol";
contract PendleYieldTokenV2 is
IPYieldTokenV2,
PendleERC20Permit,
RewardManager,
InterestManagerYTV2
{
using Math for uint256;
using SafeERC20 for IERC20;
using ArrayLib for uint256[];
struct PostExpiryData {
uint256 firstPYIndex;
}
address public immutable SY;
address public immutable PT;
address public immutable factory;
uint256 public immutable expiry;
bool public immutable doCacheIndexSameBlock;
uint256 public syReserve;
uint128 public pyIndexLastUpdatedBlock;
uint128 internal _pyIndexStored;
PostExpiryData public postExpiry;
uint256 internal _lastCollectedInterestIndex;
modifier updateData() {
if (isExpired()) _setPostExpiryData();
_;
_updateSyReserve();
}
modifier notExpired() {
if (isExpired()) revert Errors.YCExpired();
_;
}
constructor(
address _SY,
address _PT,
string memory _name,
string memory _symbol,
uint8 __decimals,
uint256 _expiry,
bool _doCacheIndexSameBlock
) PendleERC20Permit(_name, _symbol, __decimals) {
SY = _SY;
PT = _PT;
expiry = _expiry;
factory = msg.sender;
doCacheIndexSameBlock = _doCacheIndexSameBlock;
}
function mintPY(address receiverPT, address receiverYT)
external
nonReentrant
notExpired
updateData
returns (uint256 amountPYOut)
{
address[] memory receiverPTs = new address[](1);
address[] memory receiverYTs = new address[](1);
uint256[] memory amountSyToMints = new uint256[](1);
(receiverPTs[0], receiverYTs[0], amountSyToMints[0]) = (
receiverPT,
receiverYT,
_getFloatingSyAmount()
);
uint256[] memory amountPYOuts = _mintPY(receiverPTs, receiverYTs, amountSyToMints);
amountPYOut = amountPYOuts[0];
}
function mintPYMulti(
address[] calldata receiverPTs,
address[] calldata receiverYTs,
uint256[] calldata amountSyToMints
) external nonReentrant notExpired updateData returns (uint256[] memory amountPYOuts) {
uint256 length = receiverPTs.length;
if (length == 0) revert Errors.ArrayEmpty();
if (receiverYTs.length != length || amountSyToMints.length != length)
revert Errors.ArrayLengthMismatch();
uint256 totalSyToMint = amountSyToMints.sum();
if (totalSyToMint > _getFloatingSyAmount())
revert Errors.YieldContractInsufficientSy(totalSyToMint, _getFloatingSyAmount());
amountPYOuts = _mintPY(receiverPTs, receiverYTs, amountSyToMints);
}
function redeemPY(address receiver)
external
nonReentrant
updateData
returns (uint256 amountSyOut)
{
address[] memory receivers = new address[](1);
uint256[] memory amounts = new uint256[](1);
(receivers[0], amounts[0]) = (receiver, _getAmountPYToRedeem());
uint256[] memory amountSyOuts;
amountSyOuts = _redeemPY(receivers, amounts);
amountSyOut = amountSyOuts[0];
}
function redeemPYMulti(address[] calldata receivers, uint256[] calldata amountPYToRedeems)
external
nonReentrant
updateData
returns (uint256[] memory amountSyOuts)
{
if (receivers.length != amountPYToRedeems.length) revert Errors.ArrayLengthMismatch();
if (receivers.length == 0) revert Errors.ArrayEmpty();
amountSyOuts = _redeemPY(receivers, amountPYToRedeems);
}
function redeemDueInterestAndRewards(
address user,
bool redeemInterest,
bool redeemRewards
) external nonReentrant updateData returns (uint256 interestOut, uint256[] memory rewardsOut) {
if (!redeemInterest && !redeemRewards) revert Errors.YCNothingToRedeem();
_updateAndDistributeRewards(user);
if (redeemRewards) {
rewardsOut = _doTransferOutRewards(user, user);
emit RedeemRewards(user, rewardsOut);
} else {
address[] memory tokens = getRewardTokens();
rewardsOut = new uint256[](tokens.length);
}
if (redeemInterest) {
_updateAndDistributeInterest(user);
interestOut = _doTransferOutInterest(user, SY);
emit RedeemInterest(user, interestOut);
} else {
interestOut = 0;
}
}
function redeemInterestAndRewardsPostExpiryForTreasury() external nonReentrant updateData {
if (!isExpired()) revert Errors.YCNotExpired();
_collectInterest();
_redeemExternalReward();
}
function rewardIndexesCurrent() external override nonReentrant returns (uint256[] memory) {
return IStandardizedYield(SY).rewardIndexesCurrent();
}
function pyIndexCurrent() public nonReentrant returns (uint256 currentIndex) {
currentIndex = _pyIndexCurrent();
}
function pyIndexStored() public view returns (uint256) {
return _pyIndexStored;
}
function setPostExpiryData() external nonReentrant {
if (isExpired()) {
_setPostExpiryData();
}
}
function getPostExpiryData() external view returns (uint256 firstPYIndex) {
if (postExpiry.firstPYIndex == 0) revert Errors.YCPostExpiryDataNotSet();
firstPYIndex = postExpiry.firstPYIndex;
}
function _mintPY(
address[] memory receiverPTs,
address[] memory receiverYTs,
uint256[] memory amountSyToMints
) internal returns (uint256[] memory amountPYOuts) {
amountPYOuts = new uint256[](amountSyToMints.length);
uint256 index = _pyIndexCurrent();
for (uint256 i = 0; i < amountSyToMints.length; i++) {
amountPYOuts[i] = _calcPYToMint(amountSyToMints[i], index);
_mint(receiverYTs[i], amountPYOuts[i]);
IPPrincipalToken(PT).mintByYT(receiverPTs[i], amountPYOuts[i]);
emit Mint(
msg.sender,
receiverPTs[i],
receiverYTs[i],
amountSyToMints[i],
amountPYOuts[i]
);
}
}
function isExpired() public view returns (bool) {
return MiniHelpers.isCurrentlyExpired(expiry);
}
function isDistributingInterestAndRewards() public view returns (bool) {
return postExpiry.firstPYIndex == 0;
}
function _redeemPY(address[] memory receivers, uint256[] memory amountPYToRedeems)
internal
returns (uint256[] memory amountSyOuts)
{
uint256 totalAmountPYToRedeem = amountPYToRedeems.sum();
IPPrincipalToken(PT).burnByYT(address(this), totalAmountPYToRedeem);
if (!isExpired()) _burn(address(this), totalAmountPYToRedeem);
uint256 index = _pyIndexCurrent();
uint256 totalSyInterestPostExpiry;
amountSyOuts = new uint256[](receivers.length);
for (uint256 i = 0; i < receivers.length; i++) {
uint256 syInterestPostExpiry;
(amountSyOuts[i], syInterestPostExpiry) = _calcSyRedeemableFromPY(
amountPYToRedeems[i],
index
);
_transferOut(SY, receivers[i], amountSyOuts[i]);
totalSyInterestPostExpiry += syInterestPostExpiry;
emit Burn(msg.sender, receivers[i], amountPYToRedeems[i], amountSyOuts[i]);
}
address treasury = IPYieldContractFactory(factory).treasury();
_transferOut(SY, treasury, totalSyInterestPostExpiry);
}
function _calcPYToMint(uint256 amountSy, uint256 indexCurrent)
internal
pure
returns (uint256 amountPY)
{
return SYUtils.syToAsset(indexCurrent, amountSy);
}
function _calcSyRedeemableFromPY(uint256 amountPY, uint256 indexCurrent)
internal
view
returns (uint256 syToUser, uint256 syInterestPostExpiry)
{
syToUser = SYUtils.assetToSy(indexCurrent, amountPY);
if (isExpired()) {
uint256 totalSyRedeemable = SYUtils.assetToSy(postExpiry.firstPYIndex, amountPY);
syInterestPostExpiry = totalSyRedeemable - syToUser;
}
}
function _getAmountPYToRedeem() internal view returns (uint256) {
if (!isExpired()) return Math.min(_selfBalance(PT), balanceOf(address(this)));
else return _selfBalance(PT);
}
function _updateSyReserve() internal virtual {
syReserve = _selfBalance(SY);
}
function _getFloatingSyAmount() internal view returns (uint256 amount) {
amount = _selfBalance(SY) - syReserve;
if (amount == 0) revert Errors.YCNoFloatingSy();
}
function _setPostExpiryData() internal {
PostExpiryData storage local = postExpiry;
if (local.firstPYIndex != 0) return;
_updateInterestIndex();
_updateRewardIndex();
local.firstPYIndex = _pyIndexCurrent().Uint128();
}
function _pyIndexCurrent() internal returns (uint256 currentIndex) {
if (doCacheIndexSameBlock && pyIndexLastUpdatedBlock == block.number)
return _pyIndexStored;
uint128 index128 = Math
.max(IStandardizedYield(SY).exchangeRate(), _pyIndexStored)
.Uint128();
currentIndex = index128;
_pyIndexStored = index128;
pyIndexLastUpdatedBlock = uint128(block.number);
}
function _collectInterest()
internal
override
returns (uint256 accuredAmount, uint256 currentIndex)
{
uint256 prevIndex = _lastCollectedInterestIndex;
currentIndex = _pyIndexCurrent();
if (prevIndex != 0 && prevIndex != currentIndex) {
address treasury = IPYieldContractFactory(factory).treasury();
uint256 interestFeeRate = isDistributingInterestAndRewards()
? IPYieldContractFactory(factory).interestFeeRate()
: Math.ONE;
uint256 totalInterest = _calcInterest(totalSupply(), prevIndex, currentIndex);
uint256 feeAmount = totalInterest.mulDown(interestFeeRate);
accuredAmount = totalInterest - feeAmount;
_transferOut(SY, treasury, feeAmount);
_updateSyReserve();
emit CollectInterestFee(feeAmount);
}
_lastCollectedInterestIndex = currentIndex;
}
function _calcInterest(
uint256 principal,
uint256 prevIndex,
uint256 currentIndex
) internal pure returns (uint256) {
return (principal * (currentIndex - prevIndex)).divDown(prevIndex * currentIndex);
}
function _YTbalance(address user) internal view override returns (uint256) {
return balanceOf(user);
}
function _YTSupply() internal view override returns (uint256) {
return totalSupply();
}
function _getGlobalPYIndex() internal view virtual override returns (uint256) {
return _pyIndexStored;
}
function getRewardTokens() public view returns (address[] memory) {
return IStandardizedYield(SY).getRewardTokens();
}
function _redeemExternalReward() internal virtual override {
IStandardizedYield(SY).claimRewards(address(this));
address treasury = IPYieldContractFactory(factory).treasury();
uint256 rewardFeeRate = isDistributingInterestAndRewards()
? IPYieldContractFactory(factory).rewardFeeRate()
: Math.ONE;
address[] memory rewardTokens = getRewardTokens();
for (uint256 i = 0; i < rewardTokens.length; ++i) {
address token = rewardTokens[i];
uint256 accruedReward = _selfBalance(token) - rewardState[token].lastBalance;
uint256 amountRewardFee = accruedReward.mulDown(rewardFeeRate);
_transferOut(token, treasury, amountRewardFee);
emit CollectRewardFee(token, amountRewardFee);
}
}
function _rewardSharesUser(address user) internal view virtual override returns (uint256) {
uint256 index = userInterest[user].pyIndex;
if (index == 0) return 0;
return SYUtils.assetToSy(index, balanceOf(user)) + userInterest[user].accrued;
}
function _rewardSharesTotal() internal view virtual override returns (uint256) {
return syReserve;
}
function _getRewardTokens() internal view virtual override returns (address[] memory) {
return IStandardizedYield(SY).getRewardTokens();
}
function _beforeTokenTransfer(
address from,
address to,
uint256
) internal override {
if (isExpired()) _setPostExpiryData();
_updateAndDistributeRewardsForTwo(from, to);
_updateAndDistributeInterestForTwo(from, to);
}
}
文件 25 的 33：RewardManager.sol
pragma solidity 0.8.17;
import "./RewardManagerAbstract.sol";
abstract contract RewardManager is RewardManagerAbstract {
using Math for uint256;
using ArrayLib for uint256[];
uint256 public lastRewardBlock;
mapping(address => RewardState) public rewardState;
uint256 internal constant INITIAL_REWARD_INDEX = 1;
function _updateRewardIndex()
internal
virtual
override
returns (address[] memory tokens, uint256[] memory indexes)
{
tokens = _getRewardTokens();
indexes = new uint256[](tokens.length);
if (tokens.length == 0) return (tokens, indexes);
if (lastRewardBlock != block.number) {
lastRewardBlock = block.number;
uint256 totalShares = _rewardSharesTotal();
_redeemExternalReward();
for (uint256 i = 0; i < tokens.length; ++i) {
address token = tokens[i];
uint256 accrued = _selfBalance(tokens[i]) - rewardState[token].lastBalance;
uint256 index = rewardState[token].index;
if (index == 0) index = INITIAL_REWARD_INDEX;
if (totalShares != 0) index += accrued.divDown(totalShares);
rewardState[token].index = index.Uint128();
rewardState[token].lastBalance += accrued.Uint128();
}
}
for (uint256 i = 0; i < tokens.length; i++) indexes[i] = rewardState[tokens[i]].index;
}
function _doTransferOutRewards(address user, address receiver)
internal
virtual
override
returns (uint256[] memory rewardAmounts)
{
address[] memory tokens = _getRewardTokens();
rewardAmounts = new uint256[](tokens.length);
for (uint256 i = 0; i < tokens.length; i++) {
rewardAmounts[i] = userReward[tokens[i]][user].accrued;
if (rewardAmounts[i] != 0) {
userReward[tokens[i]][user].accrued = 0;
rewardState[tokens[i]].lastBalance -= rewardAmounts[i].Uint128();
_transferOut(tokens[i], receiver, rewardAmounts[i]);
}
}
}
function _getRewardTokens() internal view virtual returns (address[] memory);
function _rewardSharesTotal() internal view virtual returns (uint256);
}
文件 26 的 33：RewardManagerAbstract.sol
pragma solidity 0.8.17;
import "../../interfaces/IRewardManager.sol";
import "../libraries/ArrayLib.sol";
import "../libraries/TokenHelper.sol";
import "../libraries/math/Math.sol";
import "./RewardManagerAbstract.sol";
abstract contract RewardManagerAbstract is IRewardManager, TokenHelper {
using Math for uint256;
struct RewardState {
uint128 index;
uint128 lastBalance;
}
struct UserReward {
uint128 index;
uint128 accrued;
}
mapping(address => mapping(address => UserReward)) public userReward;
function _updateAndDistributeRewards(address user) internal virtual {
_updateAndDistributeRewardsForTwo(user, address(0));
}
function _updateAndDistributeRewardsForTwo(address user1, address user2) internal virtual {
(address[] memory tokens, uint256[] memory indexes) = _updateRewardIndex();
if (tokens.length == 0) return;
if (user1 != address(0) && user1 != address(this))
_distributeRewardsPrivate(user1, tokens, indexes);
if (user2 != address(0) && user2 != address(this))
_distributeRewardsPrivate(user2, tokens, indexes);
}
function _distributeRewardsPrivate(
address user,
address[] memory tokens,
uint256[] memory indexes
) private {
assert(user != address(0) && user != address(this));
uint256 userShares = _rewardSharesUser(user);
for (uint256 i = 0; i < tokens.length; ++i) {
address token = tokens[i];
uint256 index = indexes[i];
uint256 userIndex = userReward[token][user].index;
if (userIndex == 0) {
userReward[token][user].index = index.Uint128();
continue;
}
if (userIndex == index) continue;
uint256 deltaIndex = index - userIndex;
uint256 rewardDelta = userShares.mulDown(deltaIndex);
uint256 rewardAccrued = userReward[token][user].accrued + rewardDelta;
userReward[token][user] = UserReward({
index: index.Uint128(),
accrued: rewardAccrued.Uint128()
});
}
}
function _updateRewardIndex()
internal
virtual
returns (address[] memory tokens, uint256[] memory indexes);
function _redeemExternalReward() internal virtual;
function _doTransferOutRewards(address user, address receiver)
internal
virtual
returns (uint256[] memory rewardAmounts);
function _rewardSharesUser(address user) internal view virtual returns (uint256);
}
文件 27 的 33：SYUtils.sol
pragma solidity 0.8.17;
library SYUtils {
uint256 internal constant ONE = 1e18;
function syToAsset(uint256 exchangeRate, uint256 syAmount) internal pure returns (uint256) {
return (syAmount * exchangeRate) / ONE;
}
function syToAssetUp(uint256 exchangeRate, uint256 syAmount) internal pure returns (uint256) {
return (syAmount * exchangeRate + ONE - 1) / ONE;
}
function assetToSy(uint256 exchangeRate, uint256 assetAmount) internal pure returns (uint256) {
return (assetAmount * ONE) / exchangeRate;
}
function assetToSyUp(uint256 exchangeRate, uint256 assetAmount)
internal
pure
returns (uint256)
{
return (assetAmount * ONE + exchangeRate - 1) / exchangeRate;
}
}
文件 28 的 33：SafeERC20.sol
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/Address.sol";
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
function safePermit(
IERC20Permit token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
function _callOptionalReturn(IERC20 token, bytes memory data) private {
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
文件 29 的 33：Strings.sol
pragma solidity ^0.8.0;
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
uint8 private constant _ADDRESS_LENGTH = 20;
function toString(uint256 value) internal pure returns (string memory) {
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);
}
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);
}
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);
}
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
}
}
文件 30 的 33：TokenHelper.sol
pragma solidity 0.8.17;
import "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "../../interfaces/IWETH.sol";
abstract contract TokenHelper {
using SafeERC20 for IERC20;
address internal constant NATIVE = address(0);
uint256 internal constant LOWER_BOUND_APPROVAL = type(uint96).max / 2;
function _transferIn(
address token,
address from,
uint256 amount
) internal {
if (token == NATIVE) require(msg.value == amount, "eth mismatch");
else if (amount != 0) IERC20(token).safeTransferFrom(from, address(this), amount);
}
function _transferFrom(
IERC20 token,
address from,
address to,
uint256 amount
) internal {
if (amount != 0) token.safeTransferFrom(from, to, amount);
}
function _transferOut(
address token,
address to,
uint256 amount
) internal {
if (amount == 0) return;
if (token == NATIVE) {
(bool success, ) = to.call{ value: amount }("");
require(success, "eth send failed");
} else {
IERC20(token).safeTransfer(to, amount);
}
}
function _transferOut(
address[] memory tokens,
address to,
uint256[] memory amounts
) internal {
uint256 numTokens = tokens.length;
require(numTokens == amounts.length, "length mismatch");
for (uint256 i = 0; i < numTokens; ) {
_transferOut(tokens[i], to, amounts[i]);
unchecked {
i++;
}
}
}
function _selfBalance(address token) internal view returns (uint256) {
return (token == NATIVE) ? address(this).balance : IERC20(token).balanceOf(address(this));
}
function _selfBalance(IERC20 token) internal view returns (uint256) {
return token.balanceOf(address(this));
}
function _safeApprove(
address token,
address to,
uint256 value
) internal {
(bool success, bytes memory data) = token.call(
abi.encodeWithSelector(IERC20.approve.selector, to, value)
);
require(success && (data.length == 0 || abi.decode(data, (bool))), "Safe Approve");
}
function _safeApproveInf(address token, address to) internal {
if (token == NATIVE) return;
if (IERC20(token).allowance(address(this), to) < LOWER_BOUND_APPROVAL) {
_safeApprove(token, to, 0);
_safeApprove(token, to, type(uint256).max);
}
}
function _wrap_unwrap_ETH(
address tokenIn,
address tokenOut,
uint256 netTokenIn
) internal {
if (tokenIn == NATIVE) IWETH(tokenOut).deposit{ value: netTokenIn }();
else IWETH(tokenIn).withdraw(netTokenIn);
}
}
文件 31 的 33：draft-EIP712.sol
pragma solidity ^0.8.0;
import "./ECDSA.sol";
abstract contract EIP712 {
bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
uint256 private immutable _CACHED_CHAIN_ID;
address private immutable _CACHED_THIS;
bytes32 private immutable _HASHED_NAME;
bytes32 private immutable _HASHED_VERSION;
bytes32 private immutable _TYPE_HASH;
constructor(string memory name, string memory version) {
bytes32 hashedName = keccak256(bytes(name));
bytes32 hashedVersion = keccak256(bytes(version));
bytes32 typeHash = keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
);
_HASHED_NAME = hashedName;
_HASHED_VERSION = hashedVersion;
_CACHED_CHAIN_ID = block.chainid;
_CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
_CACHED_THIS = address(this);
_TYPE_HASH = typeHash;
}
function _domainSeparatorV4() internal view returns (bytes32) {
if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
return _CACHED_DOMAIN_SEPARATOR;
} else {
return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
}
}
function _buildDomainSeparator(
bytes32 typeHash,
bytes32 nameHash,
bytes32 versionHash
) private view returns (bytes32) {
return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
}
function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
}
}
文件 32 的 33：draft-ERC20Permit.sol
pragma solidity ^0.8.0;
import "./draft-IERC20Permit.sol";
import "../ERC20.sol";
import "../../../utils/cryptography/draft-EIP712.sol";
import "../../../utils/cryptography/ECDSA.sol";
import "../../../utils/Counters.sol";
abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {
using Counters for Counters.Counter;
mapping(address => Counters.Counter) private _nonces;
bytes32 private constant _PERMIT_TYPEHASH =
keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT;
constructor(string memory name) EIP712(name, "1") {}
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public virtual override {
require(block.timestamp <= deadline, "ERC20Permit: expired deadline");
bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));
bytes32 hash = _hashTypedDataV4(structHash);
address signer = ECDSA.recover(hash, v, r, s);
require(signer == owner, "ERC20Permit: invalid signature");
_approve(owner, spender, value);
}
function nonces(address owner) public view virtual override returns (uint256) {
return _nonces[owner].current();
}
function DOMAIN_SEPARATOR() external view override returns (bytes32) {
return _domainSeparatorV4();
}
function _useNonce(address owner) internal virtual returns (uint256 current) {
Counters.Counter storage nonce = _nonces[owner];
current = nonce.current();
nonce.increment();
}
}
文件 33 的 33：draft-IERC20Permit.sol
pragma solidity ^0.8.0;
interface IERC20Permit {
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
function nonces(address owner) external view returns (uint256);
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
{
"compilationTarget": {
"contracts/pendle/contracts/core/YieldContractsV2/PendleYieldTokenV2.sol": "PendleYieldTokenV2"
},
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs"
},
"optimizer": {
"enabled": true,
"runs": 1000000
},
"remappings": [],
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