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0x02119C949D827ca1FaFFDb17B14E6A9dEE04f410

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0x2892e3...00270971 at txn 0xb4647e428d187aa3c221475099de962cddcb015f6a20e01c0c94001375ec5d48

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	Transaction Hash	Method	Block		From		To	Value
	0xb4647e428d187aa3c221475099de962cddcb015f6a20e01c0c94001375ec5d48	0x61014060	8378985	2023-01-26 9:35:12	315 days 17 hrs ago	1674725712	0x2892e3...00270971	IN	Create: StakeUIHelper	0 ETH	0.00307029	2.50000021

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Contract Name:

StakeUIHelper

Compiler Version

v0.7.5+commit.eb77ed08

Optimization Enabled:

Yes with 200 runs

Other Settings:

default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 11 of 11 : StakeUIHelper.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.7.5;
pragma experimental ABIEncoderV2;

import {IStakedToken} from '../interfaces/IStakedToken.sol';
import {StakeUIHelperI} from '../interfaces/StakeUIHelperI.sol';
import {IERC20WithNonce} from '../interfaces/IERC20WithNonce.sol';
import {BPTPriceFeedI} from '../interfaces/BPTPriceFeedI.sol';
import {IPriceOracle} from '../interfaces/IPriceOracle.sol';
import {IERC20} from '../interfaces/IERC20.sol';

contract StakeUIHelper is StakeUIHelperI {
  IPriceOracle public immutable PRICE_ORACLE;
  BPTPriceFeedI public immutable BPT_PRICE_FEED;

  address public immutable AAVE;
  IStakedToken public immutable STAKED_AAVE;

  address public immutable BPT;
  IStakedToken public immutable STAKED_BPT;

  uint256 constant SECONDS_PER_YEAR = 365 * 24 * 60 * 60;
  uint256 constant APY_PRECISION = 10000;

  address constant MOCK_USD_ADDRESS = 0xCCa7d1416518D095E729904aAeA087dBA749A4dC;
  uint256 internal constant USD_BASE = 1e26;

  constructor(
    IPriceOracle priceOracle,
    BPTPriceFeedI bptPriceFeed,
    address aave,
    IStakedToken stkAave,
    address bpt,
    IStakedToken stkBpt
  ) public {
    PRICE_ORACLE = priceOracle;
    BPT_PRICE_FEED = bptPriceFeed;

    AAVE = aave;
    STAKED_AAVE = stkAave;

    BPT = bpt;
    STAKED_BPT = stkBpt;
  }

  function _getUserAndGeneralStakedAssetData(
    IStakedToken stakeToken,
    address underlyingToken,
    address user,
    bool isNonceAvailable
  ) internal view returns (AssetUIData memory) {
    AssetUIData memory data;
    GeneralStakeUIData memory generalStakeData = _getGeneralStakedAssetData(stakeToken);

    data.stakeTokenTotalSupply = generalStakeData.stakeTokenTotalSupply;
    data.stakeCooldownSeconds = generalStakeData.stakeCooldownSeconds;
    data.stakeUnstakeWindow = generalStakeData.stakeUnstakeWindow;
    data.rewardTokenPriceEth = generalStakeData.rewardTokenPriceEth;
    data.distributionEnd = generalStakeData.distributionEnd;
    data.distributionPerSecond = generalStakeData.distributionPerSecond;

    if (user != address(0)) {
      UserStakeUIData memory userStakeData = _getUserStakedAssetData(
        stakeToken,
        underlyingToken,
        user,
        isNonceAvailable
      );

      data.underlyingTokenUserBalance = userStakeData.underlyingTokenUserBalance;
      data.stakeTokenUserBalance = userStakeData.stakeTokenUserBalance;
      data.userIncentivesToClaim = userStakeData.userIncentivesToClaim;
      data.userCooldown = userStakeData.userCooldown;
      data.userPermitNonce = userStakeData.userPermitNonce;
    }

    return data;
  }

  function _getUserStakedAssetData(
    IStakedToken stakeToken,
    address underlyingToken,
    address user,
    bool isNonceAvailable
  ) internal view returns (UserStakeUIData memory) {
    UserStakeUIData memory data;
    data.underlyingTokenUserBalance = IERC20(underlyingToken).balanceOf(user);
    data.stakeTokenUserBalance = stakeToken.balanceOf(user);
    data.userIncentivesToClaim = stakeToken.getTotalRewardsBalance(user);
    data.userCooldown = stakeToken.stakersCooldowns(user);
    data.userPermitNonce = isNonceAvailable ? IERC20WithNonce(underlyingToken)._nonces(user) : 0;

    return data;
  }

  function _getGeneralStakedAssetData(IStakedToken stakeToken)
    internal
    view
    returns (GeneralStakeUIData memory)
  {
    GeneralStakeUIData memory data;

    data.stakeTokenTotalSupply = stakeToken.totalSupply();
    data.stakeCooldownSeconds = stakeToken.COOLDOWN_SECONDS();
    data.stakeUnstakeWindow = stakeToken.UNSTAKE_WINDOW();
    data.rewardTokenPriceEth = PRICE_ORACLE.getAssetPrice(AAVE);
    data.distributionEnd = stakeToken.DISTRIBUTION_END();
    if (block.timestamp < data.distributionEnd) {
      data.distributionPerSecond = stakeToken.assets(address(stakeToken)).emissionPerSecond;
    }

    return data;
  }

  function _calculateApy(uint256 distributionPerSecond, uint256 stakeTokenTotalSupply)
    internal
    pure
    returns (uint256)
  {
    if (stakeTokenTotalSupply == 0) return 0;
    return (distributionPerSecond * SECONDS_PER_YEAR * APY_PRECISION) / stakeTokenTotalSupply;
  }

  function getStkAaveData(address user) public view override returns (AssetUIData memory) {
    AssetUIData memory data = _getUserAndGeneralStakedAssetData(STAKED_AAVE, AAVE, user, false);

    data.stakeTokenPriceEth = data.rewardTokenPriceEth;
    data.stakeApy = _calculateApy(data.distributionPerSecond, data.stakeTokenTotalSupply);
    return data;
  }

  function getStkBptData(address user) public view override returns (AssetUIData memory) {
    AssetUIData memory data = _getUserAndGeneralStakedAssetData(STAKED_BPT, BPT, user, false);

    data.stakeTokenPriceEth = address(BPT_PRICE_FEED) != address(0)
      ? BPT_PRICE_FEED.latestAnswer()
      : PRICE_ORACLE.getAssetPrice(BPT);
    data.stakeApy = _calculateApy(
      data.distributionPerSecond * data.rewardTokenPriceEth,
      data.stakeTokenTotalSupply * data.stakeTokenPriceEth
    );

    return data;
  }

  function getStkGeneralAaveData() public view override returns (GeneralStakeUIData memory) {
    GeneralStakeUIData memory data = _getGeneralStakedAssetData(STAKED_AAVE);

    data.stakeTokenPriceEth = data.rewardTokenPriceEth;
    data.stakeApy = _calculateApy(data.distributionPerSecond, data.stakeTokenTotalSupply);
    return data;
  }

  function getStkGeneralBptData() public view override returns (GeneralStakeUIData memory) {
    GeneralStakeUIData memory data = _getGeneralStakedAssetData(STAKED_BPT);

    data.stakeTokenPriceEth = address(BPT_PRICE_FEED) != address(0)
      ? BPT_PRICE_FEED.latestAnswer()
      : PRICE_ORACLE.getAssetPrice(BPT);
    data.stakeApy = _calculateApy(
      data.distributionPerSecond * data.rewardTokenPriceEth,
      data.stakeTokenTotalSupply * data.stakeTokenPriceEth
    );

    return data;
  }

  function getStkUserAaveData(address user) public view override returns (UserStakeUIData memory) {
    UserStakeUIData memory data = _getUserStakedAssetData(STAKED_AAVE, AAVE, user, false);
    return data;
  }

  function getStkUserBptData(address user) public view override returns (UserStakeUIData memory) {
    UserStakeUIData memory data = _getUserStakedAssetData(STAKED_BPT, BPT, user, false);
    return data;
  }

  function getUserUIData(address user)
    external
    view
    override
    returns (
      AssetUIData memory,
      AssetUIData memory emptyData,
      uint256
    )
  {
    return (
      getStkAaveData(user),
      emptyData,
      USD_BASE / PRICE_ORACLE.getAssetPrice(MOCK_USD_ADDRESS)
    );
  }

  function getGeneralStakeUIData()
    external
    view
    override
    returns (
      GeneralStakeUIData memory,
      GeneralStakeUIData memory emptyData,
      uint256
    )
  {
    return (
      getStkGeneralAaveData(),
      emptyData,
      USD_BASE / PRICE_ORACLE.getAssetPrice(MOCK_USD_ADDRESS)
    );
  }

  function getUserStakeUIData(address user)
    external
    view
    override
    returns (
      UserStakeUIData memory,
      UserStakeUIData memory emptyData,
      uint256
    )
  {
    return (
      getStkUserAaveData(user),
      emptyData,
      USD_BASE / PRICE_ORACLE.getAssetPrice(MOCK_USD_ADDRESS)
    );
  }
}

File 2 of 11 : BPTPriceFeedI.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.7.5;

interface BPTPriceFeedI {
  function latestAnswer() external view returns (uint256);
}

File 3 of 11 : IERC20.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.7.5;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 * From https://github.com/OpenZeppelin/openzeppelin-contracts
 */
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 `recipient`.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
    address recipient,
    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);
}

File 4 of 11 : IERC20Detailed.sol

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.5;

import {IERC20} from './IERC20.sol';

/**
 * @dev Interface for ERC20 including metadata
 **/
interface IERC20Detailed is IERC20 {
  function name() external view returns (string memory);

  function symbol() external view returns (string memory);

  function decimals() external view returns (uint8);
}

File 5 of 11 : IERC20WithNonce.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.7.5;

import {IERC20} from '../lib/ERC20.sol';

interface IERC20WithNonce is IERC20 {
  function _nonces(address user) external view returns (uint256);
}

File 6 of 11 : IPriceOracle.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.7.5;

interface IPriceOracle {
  function getAssetPrice(address asset) external view returns (uint256);
}

File 7 of 11 : IStakedToken.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.7.5;
pragma experimental ABIEncoderV2;

interface IStakedToken {
  struct AssetData {
    uint128 emissionPerSecond;
    uint128 lastUpdateTimestamp;
    uint256 index;
  }

  function totalSupply() external view returns (uint256);

  function COOLDOWN_SECONDS() external view returns (uint256);

  function UNSTAKE_WINDOW() external view returns (uint256);

  function DISTRIBUTION_END() external view returns (uint256);

  function assets(address asset) external view returns (AssetData memory);

  function balanceOf(address user) external view returns (uint256);

  function getTotalRewardsBalance(address user) external view returns (uint256);

  function stakersCooldowns(address user) external view returns (uint256);
}

File 8 of 11 : StakeUIHelperI.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.7.5;
pragma experimental ABIEncoderV2;

interface StakeUIHelperI {
  struct AssetUIData {
    uint256 stakeTokenTotalSupply;
    uint256 stakeCooldownSeconds;
    uint256 stakeUnstakeWindow;
    uint256 stakeTokenPriceEth;
    uint256 rewardTokenPriceEth;
    uint256 stakeApy;
    uint128 distributionPerSecond;
    uint256 distributionEnd;
    uint256 stakeTokenUserBalance;
    uint256 underlyingTokenUserBalance;
    uint256 userCooldown;
    uint256 userIncentivesToClaim;
    uint256 userPermitNonce;
  }

  struct GeneralStakeUIData {
    uint256 stakeTokenTotalSupply;
    uint256 stakeCooldownSeconds;
    uint256 stakeUnstakeWindow;
    uint256 stakeTokenPriceEth;
    uint256 rewardTokenPriceEth;
    uint256 stakeApy;
    uint128 distributionPerSecond;
    uint256 distributionEnd;
  }

  struct UserStakeUIData {
    uint256 stakeTokenUserBalance;
    uint256 underlyingTokenUserBalance;
    uint256 userCooldown;
    uint256 userIncentivesToClaim;
    uint256 userPermitNonce;
  }

  function getStkAaveData(address user) external view returns (AssetUIData memory);

  function getStkBptData(address user) external view returns (AssetUIData memory);

  function getStkGeneralAaveData() external view returns (GeneralStakeUIData memory);

  function getStkGeneralBptData() external view returns (GeneralStakeUIData memory);

  function getStkUserAaveData(address user) external view returns (UserStakeUIData memory);

  function getStkUserBptData(address user) external view returns (UserStakeUIData memory);

  /// @dev This will return user + general for fallback
  function getUserUIData(address user)
    external
    view
    returns (
      AssetUIData memory,
      AssetUIData memory,
      uint256
    );

  function getGeneralStakeUIData()
    external
    view
    returns (
      GeneralStakeUIData memory,
      GeneralStakeUIData memory,
      uint256
    );

  function getUserStakeUIData(address user)
    external
    view
    returns (
      UserStakeUIData memory,
      UserStakeUIData memory,
      uint256
    );
}

File 9 of 11 : Context.sol

// SPDX-License-Identifier: MIT

pragma solidity 0.7.5;

/**
 * @dev From https://github.com/OpenZeppelin/openzeppelin-contracts
 * 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 GSN 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 payable) {
    return msg.sender;
  }

  function _msgData() internal view virtual returns (bytes memory) {
    this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
    return msg.data;
  }
}

File 10 of 11 : ERC20.sol

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.5;

import {Context} from './Context.sol';
import {IERC20} from '../interfaces/IERC20.sol';
import {IERC20Detailed} from '../interfaces/IERC20Detailed.sol';
import {SafeMath} from './SafeMath.sol';

/**
 * @title ERC20
 * @notice Basic ERC20 implementation
 * @author Aave
 **/
contract ERC20 is Context, IERC20, IERC20Detailed {
  using SafeMath for uint256;

  mapping(address => uint256) private _balances;
  mapping(address => mapping(address => uint256)) private _allowances;
  uint256 private _totalSupply;
  string private _name;
  string private _symbol;
  uint8 private _decimals;

  constructor(
    string memory name,
    string memory symbol,
    uint8 decimals
  ) public {
    _name = name;
    _symbol = symbol;
    _decimals = decimals;
  }

  /**
   * @return the name of the token
   **/
  function name() public view override returns (string memory) {
    return _name;
  }

  /**
   * @return the symbol of the token
   **/
  function symbol() public view override returns (string memory) {
    return _symbol;
  }

  /**
   * @return the decimals of the token
   **/
  function decimals() public view override returns (uint8) {
    return _decimals;
  }

  /**
   * @return the total supply of the token
   **/
  function totalSupply() public view override returns (uint256) {
    return _totalSupply;
  }

  /**
   * @return the balance of the token
   **/
  function balanceOf(address account) public view override returns (uint256) {
    return _balances[account];
  }

  /**
   * @dev executes a transfer of tokens from msg.sender to recipient
   * @param recipient the recipient of the tokens
   * @param amount the amount of tokens being transferred
   * @return true if the transfer succeeds, false otherwise
   **/
  function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
    _transfer(_msgSender(), recipient, amount);
    return true;
  }

  /**
   * @dev returns the allowance of spender on the tokens owned by owner
   * @param owner the owner of the tokens
   * @param spender the user allowed to spend the owner's tokens
   * @return the amount of owner's tokens spender is allowed to spend
   **/
  function allowance(address owner, address spender)
    public
    view
    virtual
    override
    returns (uint256)
  {
    return _allowances[owner][spender];
  }

  /**
   * @dev allows spender to spend the tokens owned by msg.sender
   * @param spender the user allowed to spend msg.sender tokens
   * @return true
   **/
  function approve(address spender, uint256 amount) public virtual override returns (bool) {
    _approve(_msgSender(), spender, amount);
    return true;
  }

  /**
   * @dev executes a transfer of token from sender to recipient, if msg.sender is allowed to do so
   * @param sender the owner of the tokens
   * @param recipient the recipient of the tokens
   * @param amount the amount of tokens being transferred
   * @return true if the transfer succeeds, false otherwise
   **/
  function transferFrom(
    address sender,
    address recipient,
    uint256 amount
  ) public virtual override returns (bool) {
    _transfer(sender, recipient, amount);
    _approve(
      sender,
      _msgSender(),
      _allowances[sender][_msgSender()].sub(amount, 'ERC20: transfer amount exceeds allowance')
    );
    return true;
  }

  /**
   * @dev increases the allowance of spender to spend msg.sender tokens
   * @param spender the user allowed to spend on behalf of msg.sender
   * @param addedValue the amount being added to the allowance
   * @return true
   **/
  function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
    _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
    return true;
  }

  /**
   * @dev decreases the allowance of spender to spend msg.sender tokens
   * @param spender the user allowed to spend on behalf of msg.sender
   * @param subtractedValue the amount being subtracted to the allowance
   * @return true
   **/
  function decreaseAllowance(address spender, uint256 subtractedValue)
    public
    virtual
    returns (bool)
  {
    _approve(
      _msgSender(),
      spender,
      _allowances[_msgSender()][spender].sub(
        subtractedValue,
        'ERC20: decreased allowance below zero'
      )
    );
    return true;
  }

  function _transfer(
    address sender,
    address recipient,
    uint256 amount
  ) internal virtual {
    require(sender != address(0), 'ERC20: transfer from the zero address');
    require(recipient != address(0), 'ERC20: transfer to the zero address');

    _beforeTokenTransfer(sender, recipient, amount);

    _balances[sender] = _balances[sender].sub(amount, 'ERC20: transfer amount exceeds balance');
    _balances[recipient] = _balances[recipient].add(amount);
    emit Transfer(sender, recipient, 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 = _totalSupply.add(amount);
    _balances[account] = _balances[account].add(amount);
    emit Transfer(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);

    _balances[account] = _balances[account].sub(amount, 'ERC20: burn amount exceeds balance');
    _totalSupply = _totalSupply.sub(amount);
    emit Transfer(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 _setName(string memory newName) internal {
    _name = newName;
  }

  function _setSymbol(string memory newSymbol) internal {
    _symbol = newSymbol;
  }

  function _setDecimals(uint8 newDecimals) internal {
    _decimals = newDecimals;
  }

  function _beforeTokenTransfer(
    address from,
    address to,
    uint256 amount
  ) internal virtual {}
}

File 11 of 11 : SafeMath.sol

// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.7.5;

/**
 * @dev From https://github.com/OpenZeppelin/openzeppelin-contracts
 * Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
  /**
   * @dev Returns the addition of two unsigned integers, reverting on
   * overflow.
   *
   * Counterpart to Solidity's `+` operator.
   *
   * Requirements:
   * - Addition cannot overflow.
   */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    require(c >= a, 'SafeMath: addition overflow');

    return c;
  }

  /**
   * @dev Returns the subtraction of two unsigned integers, reverting on
   * overflow (when the result is negative).
   *
   * Counterpart to Solidity's `-` operator.
   *
   * Requirements:
   * - Subtraction cannot overflow.
   */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    return sub(a, b, 'SafeMath: subtraction overflow');
  }

  /**
   * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
   * overflow (when the result is negative).
   *
   * Counterpart to Solidity's `-` operator.
   *
   * Requirements:
   * - Subtraction cannot overflow.
   */
  function sub(
    uint256 a,
    uint256 b,
    string memory errorMessage
  ) internal pure returns (uint256) {
    require(b <= a, errorMessage);
    uint256 c = a - b;

    return c;
  }

  /**
   * @dev Returns the multiplication of two unsigned integers, reverting on
   * overflow.
   *
   * Counterpart to Solidity's `*` operator.
   *
   * Requirements:
   * - Multiplication cannot overflow.
   */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
    // benefit is lost if 'b' is also tested.
    // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
    if (a == 0) {
      return 0;
    }

    uint256 c = a * b;
    require(c / a == b, 'SafeMath: multiplication overflow');

    return c;
  }

  /**
   * @dev Returns the integer division of two unsigned integers. Reverts on
   * division by zero. The result is rounded towards zero.
   *
   * Counterpart to Solidity's `/` operator. Note: this function uses a
   * `revert` opcode (which leaves remaining gas untouched) while Solidity
   * uses an invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    return div(a, b, 'SafeMath: division by zero');
  }

  /**
   * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
   * division by zero. The result is rounded towards zero.
   *
   * Counterpart to Solidity's `/` operator. Note: this function uses a
   * `revert` opcode (which leaves remaining gas untouched) while Solidity
   * uses an invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function div(
    uint256 a,
    uint256 b,
    string memory errorMessage
  ) internal pure returns (uint256) {
    // Solidity only automatically asserts when dividing by 0
    require(b > 0, errorMessage);
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold

    return c;
  }

  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * Reverts when dividing by zero.
   *
   * Counterpart to Solidity's `%` operator. This function uses a `revert`
   * opcode (which leaves remaining gas untouched) while Solidity uses an
   * invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function mod(uint256 a, uint256 b) internal pure returns (uint256) {
    return mod(a, b, 'SafeMath: modulo by zero');
  }

  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * Reverts with custom message when dividing by zero.
   *
   * Counterpart to Solidity's `%` operator. This function uses a `revert`
   * opcode (which leaves remaining gas untouched) while Solidity uses an
   * invalid opcode to revert (consuming all remaining gas).
   *
   * Requirements:
   * - The divisor cannot be zero.
   */
  function mod(
    uint256 a,
    uint256 b,
    string memory errorMessage
  ) internal pure returns (uint256) {
    require(b != 0, errorMessage);
    return a % b;
  }
}

Settings

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "istanbul",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

Contract ABI

[{"inputs":[{"internalType":"contract IPriceOracle","name":"priceOracle","type":"address"},{"internalType":"contract BPTPriceFeedI","name":"bptPriceFeed","type":"address"},{"internalType":"address","name":"aave","type":"address"},{"internalType":"contract IStakedToken","name":"stkAave","type":"address"},{"internalType":"address","name":"bpt","type":"address"},{"internalType":"contract IStakedToken","name":"stkBpt","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AAVE","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"BPT","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"BPT_PRICE_FEED","outputs":[{"internalType":"contract BPTPriceFeedI","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PRICE_ORACLE","outputs":[{"internalType":"contract IPriceOracle","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"STAKED_AAVE","outputs":[{"internalType":"contract IStakedToken","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"STAKED_BPT","outputs":[{"internalType":"contract IStakedToken","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getGeneralStakeUIData","outputs":[{"components":[{"internalType":"uint256","name":"stakeTokenTotalSupply","type":"uint256"},{"internalType":"uint256","name":"stakeCooldownSeconds","type":"uint256"},{"internalType":"uint256","name":"stakeUnstakeWindow","type":"uint256"},{"internalType":"uint256","name":"stakeTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"rewardTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"stakeApy","type":"uint256"},{"internalType":"uint128","name":"distributionPerSecond","type":"uint128"},{"internalType":"uint256","name":"distributionEnd","type":"uint256"}],"internalType":"struct StakeUIHelperI.GeneralStakeUIData","name":"","type":"tuple"},{"components":[{"internalType":"uint256","name":"stakeTokenTotalSupply","type":"uint256"},{"internalType":"uint256","name":"stakeCooldownSeconds","type":"uint256"},{"internalType":"uint256","name":"stakeUnstakeWindow","type":"uint256"},{"internalType":"uint256","name":"stakeTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"rewardTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"stakeApy","type":"uint256"},{"internalType":"uint128","name":"distributionPerSecond","type":"uint128"},{"internalType":"uint256","name":"distributionEnd","type":"uint256"}],"internalType":"struct StakeUIHelperI.GeneralStakeUIData","name":"emptyData","type":"tuple"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getStkAaveData","outputs":[{"components":[{"internalType":"uint256","name":"stakeTokenTotalSupply","type":"uint256"},{"internalType":"uint256","name":"stakeCooldownSeconds","type":"uint256"},{"internalType":"uint256","name":"stakeUnstakeWindow","type":"uint256"},{"internalType":"uint256","name":"stakeTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"rewardTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"stakeApy","type":"uint256"},{"internalType":"uint128","name":"distributionPerSecond","type":"uint128"},{"internalType":"uint256","name":"distributionEnd","type":"uint256"},{"internalType":"uint256","name":"stakeTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"underlyingTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"userCooldown","type":"uint256"},{"internalType":"uint256","name":"userIncentivesToClaim","type":"uint256"},{"internalType":"uint256","name":"userPermitNonce","type":"uint256"}],"internalType":"struct StakeUIHelperI.AssetUIData","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getStkBptData","outputs":[{"components":[{"internalType":"uint256","name":"stakeTokenTotalSupply","type":"uint256"},{"internalType":"uint256","name":"stakeCooldownSeconds","type":"uint256"},{"internalType":"uint256","name":"stakeUnstakeWindow","type":"uint256"},{"internalType":"uint256","name":"stakeTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"rewardTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"stakeApy","type":"uint256"},{"internalType":"uint128","name":"distributionPerSecond","type":"uint128"},{"internalType":"uint256","name":"distributionEnd","type":"uint256"},{"internalType":"uint256","name":"stakeTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"underlyingTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"userCooldown","type":"uint256"},{"internalType":"uint256","name":"userIncentivesToClaim","type":"uint256"},{"internalType":"uint256","name":"userPermitNonce","type":"uint256"}],"internalType":"struct StakeUIHelperI.AssetUIData","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getStkGeneralAaveData","outputs":[{"components":[{"internalType":"uint256","name":"stakeTokenTotalSupply","type":"uint256"},{"internalType":"uint256","name":"stakeCooldownSeconds","type":"uint256"},{"internalType":"uint256","name":"stakeUnstakeWindow","type":"uint256"},{"internalType":"uint256","name":"stakeTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"rewardTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"stakeApy","type":"uint256"},{"internalType":"uint128","name":"distributionPerSecond","type":"uint128"},{"internalType":"uint256","name":"distributionEnd","type":"uint256"}],"internalType":"struct StakeUIHelperI.GeneralStakeUIData","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getStkGeneralBptData","outputs":[{"components":[{"internalType":"uint256","name":"stakeTokenTotalSupply","type":"uint256"},{"internalType":"uint256","name":"stakeCooldownSeconds","type":"uint256"},{"internalType":"uint256","name":"stakeUnstakeWindow","type":"uint256"},{"internalType":"uint256","name":"stakeTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"rewardTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"stakeApy","type":"uint256"},{"internalType":"uint128","name":"distributionPerSecond","type":"uint128"},{"internalType":"uint256","name":"distributionEnd","type":"uint256"}],"internalType":"struct StakeUIHelperI.GeneralStakeUIData","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getStkUserAaveData","outputs":[{"components":[{"internalType":"uint256","name":"stakeTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"underlyingTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"userCooldown","type":"uint256"},{"internalType":"uint256","name":"userIncentivesToClaim","type":"uint256"},{"internalType":"uint256","name":"userPermitNonce","type":"uint256"}],"internalType":"struct StakeUIHelperI.UserStakeUIData","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getStkUserBptData","outputs":[{"components":[{"internalType":"uint256","name":"stakeTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"underlyingTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"userCooldown","type":"uint256"},{"internalType":"uint256","name":"userIncentivesToClaim","type":"uint256"},{"internalType":"uint256","name":"userPermitNonce","type":"uint256"}],"internalType":"struct StakeUIHelperI.UserStakeUIData","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserStakeUIData","outputs":[{"components":[{"internalType":"uint256","name":"stakeTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"underlyingTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"userCooldown","type":"uint256"},{"internalType":"uint256","name":"userIncentivesToClaim","type":"uint256"},{"internalType":"uint256","name":"userPermitNonce","type":"uint256"}],"internalType":"struct StakeUIHelperI.UserStakeUIData","name":"","type":"tuple"},{"components":[{"internalType":"uint256","name":"stakeTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"underlyingTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"userCooldown","type":"uint256"},{"internalType":"uint256","name":"userIncentivesToClaim","type":"uint256"},{"internalType":"uint256","name":"userPermitNonce","type":"uint256"}],"internalType":"struct StakeUIHelperI.UserStakeUIData","name":"emptyData","type":"tuple"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"user","type":"address"}],"name":"getUserUIData","outputs":[{"components":[{"internalType":"uint256","name":"stakeTokenTotalSupply","type":"uint256"},{"internalType":"uint256","name":"stakeCooldownSeconds","type":"uint256"},{"internalType":"uint256","name":"stakeUnstakeWindow","type":"uint256"},{"internalType":"uint256","name":"stakeTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"rewardTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"stakeApy","type":"uint256"},{"internalType":"uint128","name":"distributionPerSecond","type":"uint128"},{"internalType":"uint256","name":"distributionEnd","type":"uint256"},{"internalType":"uint256","name":"stakeTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"underlyingTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"userCooldown","type":"uint256"},{"internalType":"uint256","name":"userIncentivesToClaim","type":"uint256"},{"internalType":"uint256","name":"userPermitNonce","type":"uint256"}],"internalType":"struct StakeUIHelperI.AssetUIData","name":"","type":"tuple"},{"components":[{"internalType":"uint256","name":"stakeTokenTotalSupply","type":"uint256"},{"internalType":"uint256","name":"stakeCooldownSeconds","type":"uint256"},{"internalType":"uint256","name":"stakeUnstakeWindow","type":"uint256"},{"internalType":"uint256","name":"stakeTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"rewardTokenPriceEth","type":"uint256"},{"internalType":"uint256","name":"stakeApy","type":"uint256"},{"internalType":"uint128","name":"distributionPerSecond","type":"uint128"},{"internalType":"uint256","name":"distributionEnd","type":"uint256"},{"internalType":"uint256","name":"stakeTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"underlyingTokenUserBalance","type":"uint256"},{"internalType":"uint256","name":"userCooldown","type":"uint256"},{"internalType":"uint256","name":"userIncentivesToClaim","type":"uint256"},{"internalType":"uint256","name":"userPermitNonce","type":"uint256"}],"internalType":"struct StakeUIHelperI.AssetUIData","name":"emptyData","type":"tuple"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}]

Contract Creation Code

Decompile Bytecode Switch to Opcodes View

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000cb601629b36891c43943e3cda2eb18fac38b5c4e0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000e205181eb3d7415f15377f79aa7769f846ce56dd000000000000000000000000b85b34c58129a9a7d54149e86934ed3922b0559200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : priceOracle (address): 0xcb601629B36891c43943e3CDa2eB18FAc38B5c4e
Arg [1] : bptPriceFeed (address): 0x0000000000000000000000000000000000000000
Arg [2] : aave (address): 0xE205181Eb3D7415f15377F79aA7769F846cE56DD
Arg [3] : stkAave (address): 0xb85B34C58129a9a7d54149e86934ed3922b05592
Arg [4] : bpt (address): 0x0000000000000000000000000000000000000000
Arg [5] : stkBpt (address): 0x0000000000000000000000000000000000000000

-----Encoded View---------------
6 Constructor Arguments found :
Arg [0] : 000000000000000000000000cb601629b36891c43943e3cda2eb18fac38b5c4e
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [2] : 000000000000000000000000e205181eb3d7415f15377f79aa7769f846ce56dd
Arg [3] : 000000000000000000000000b85b34c58129a9a7d54149e86934ed3922b05592
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [5] : 0000000000000000000000000000000000000000000000000000000000000000

Block		Transaction	Difficulty	Gas Used	Reward

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Block		Uncle Number	Difficulty	Gas Used	Reward

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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.