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import "./libraries/SafeMath.sol";
import "./libraries/FixedPoint.sol";
import "./libraries/Address.sol";
import "./libraries/SafeERC20.sol";
import "./interface/IHATETreasury.sol";

// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity ^0.7.5;

contract BondERC20 {
    using FixedPoint for *;
    using SafeERC20 for IERC20;
    using SafeMath for uint;

    modifier onlyOwner() {
        require(owner == msg.sender, "Ownable: caller is not the owner");
        _;
    }

    /* ======== EVENTS ======== */

    event BondCreated(uint deposit, uint payout, uint expires);
    event BondRedeemed(address recipient, uint payout, uint remaining);
    event BondPriceChanged(uint internalPrice, uint debtRatio);
    event ControlVariableAdjustment(uint initialBCV, uint newBCV, uint adjustment, bool addition);

    /* ======== STATE VARIABLES ======== */

    address public owner;

    IERC20 private immutable HATE; // token paid for principal
    IERC20 private immutable principalToken; // inflow token
    IHATETreasury private immutable treasury; // pays for and receives principal

    address public feeTo;
    // in thousandths of a %. i.e. 500 = 0.5%
    uint public feePercent;

    uint public totalPrincipalBonded;
    uint public totalPayoutGiven;
    uint public totalDebt; // total value of outstanding bonds; used for pricing
    uint public lastDecay; // reference timestamp for debt decay

    Terms public terms; // stores terms for new bonds
    Adjust public adjustment; // stores adjustment to BCV data

    mapping(address => Bond) public bondInfo; // stores bond information for depositors

    /* ======== STRUCTS ======== */

    // Info for creating new bonds
    struct Terms {
        uint controlVariable; // scaling variable for price
        uint vestingTerm; // in seconds
        uint minimumPrice; // vs principal value
        uint maxPayout; // in thousandths of a %. i.e. 500 = 0.5%
        uint maxDebt; // payout token decimal debt ratio, max % total supply created as debt
    }

    // Info for bond holder
    struct Bond {
        uint payout; // payout token remaining to be paid
        uint vesting; // seconds left to vest
        uint lastBlockTimestamp; // Last interaction
        uint truePricePaid; // Price paid (principal tokens per payout token) in ten-millionths - 4000000 = 0.4
    }

    // Info for incremental adjustments to control variable
    struct Adjust {
        bool add; // addition or subtraction
        uint rate; // increment
        uint target; // BCV when adjustment finished
        uint buffer; // minimum length (in seconds) between adjustments
        uint lastBlockTimestamp; // timestamp when last adjustment made
    }

    /* ======== CONSTRUCTOR ======== */

    constructor(address _treasury, address _principalToken) {
        require(_treasury != address(0));
        treasury = IHATETreasury(_treasury);
        HATE = IERC20(IHATETreasury(_treasury).HATE());
        require(_principalToken != address(0));
        principalToken = IERC20(_principalToken);
        owner = msg.sender;
    }

    /* ======== INITIALIZATION ======== */

    /**
     *  @notice initializes bond parameters
     *  @param _controlVariable uint
     *  @param _vestingTerm uint
     *  @param _minimumPrice uint
     *  @param _maxPayout uint
     *  @param _maxDebt uint
     *  @param _initialDebt uint
     */
    function initializeBond(
        uint _controlVariable,
        uint _vestingTerm,
        uint _minimumPrice,
        uint _maxPayout,
        uint _maxDebt,
        uint _initialDebt
    ) external onlyOwner {
        require(currentDebt() == 0, "Debt must be 0 for initialization");
        terms = Terms({
            controlVariable: _controlVariable,
            vestingTerm: _vestingTerm,
            minimumPrice: _minimumPrice,
            maxPayout: _maxPayout,
            maxDebt: _maxDebt
        });
        totalDebt = _initialDebt;
        lastDecay = block.timestamp;
    }

    /* ======== POLICY FUNCTIONS ======== */

    function setFeeAndFeeTo(address feeTo_, uint256 feePercent_) external onlyOwner {
        feeTo = feeTo_;
        feePercent = feePercent_;
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        owner = newOwner;
    }

    enum PARAMETER {
        VESTING,
        PAYOUT,
        DEBT
    }

    /**
     *  @notice set parameters for new bonds
     *  @param _parameter PARAMETER
     *  @param _input uint
     */
    function setBondTerms(PARAMETER _parameter, uint _input) external onlyOwner {
        if (_parameter == PARAMETER.VESTING) {
            // 0
            require(_input >= 129600, "Vesting must be longer than 36 hours");
            terms.vestingTerm = _input;
        } else if (_parameter == PARAMETER.PAYOUT) {
            // 1
            terms.maxPayout = _input;
        } else if (_parameter == PARAMETER.DEBT) {
            // 2
            terms.maxDebt = _input;
        }
    }

    /**
     *  @notice set control variable adjustment
     *  @param _addition bool
     *  @param _increment uint
     *  @param _target uint
     *  @param _buffer uint
     */
    function setAdjustment(bool _addition, uint _increment, uint _target, uint _buffer) external onlyOwner {
        require(_increment <= terms.controlVariable.mul(30).div(1000), "Increment too large");

        adjustment = Adjust({
            add: _addition,
            rate: _increment,
            target: _target,
            buffer: _buffer,
            lastBlockTimestamp: block.timestamp
        });
    }

    /* ======== USER FUNCTIONS ======== */

    /**
     *  @notice deposit bond
     *  @param _amount uint
     *  @param _maxPrice uint
     *  @param _depositor address
     *  @return uint
     */
    function deposit(uint _amount, uint _maxPrice, address _depositor) external returns (uint) {
        require(_depositor != address(0), "Invalid address");

        decayDebt();

        uint nativePrice = bondPrice();

        require(_maxPrice >= nativePrice, "Slippage limit: more than max price"); // slippage protection

        uint value = treasury.valueOfToken(address(principalToken), _amount);

        uint payout = payoutFor(value);

        require(payout >= 10 ** HATE.decimals() / 100, "Bond too small"); // must be > 0.01 payout token ( underflow protection )
        require(payout <= maxPayout(), "Bond too large"); // size protection because there is no slippage

        // total debt is increased
        totalDebt = totalDebt.add(value);

        require(totalDebt <= terms.maxDebt, "Max capacity reached");

        // depositor info is stored
        bondInfo[_depositor] = Bond({
            payout: bondInfo[_depositor].payout.add(payout),
            vesting: terms.vestingTerm,
            lastBlockTimestamp: block.timestamp,
            truePricePaid: bondPrice()
        });

        totalPrincipalBonded = totalPrincipalBonded.add(_amount); // total bonded increased
        totalPayoutGiven = totalPayoutGiven.add(payout); // total payout increased

        treasury.mintHATE(address(this), payout);

        if (feeTo != address(0) && feePercent > 0) {
            uint256 _fee = payout.mul(feePercent).div(100000);
            treasury.mintHATE(feeTo, _fee);
        }

        principalToken.safeTransferFrom(msg.sender, address(treasury), _amount); // transfer principal bonded to custom treasury

        // indexed events are emitted
        emit BondCreated(_amount, payout, block.timestamp.add(terms.vestingTerm));
        emit BondPriceChanged(_bondPrice(), debtRatio());

        adjust(); // control variable is adjusted
        return payout;
    }

    /**
     *  @notice redeem bond for user
     *  @param _depositor address
     *  @return uint
     */
    function redeem(address _depositor) external returns (uint) {
        Bond memory info = bondInfo[_depositor];
        uint percentVested = percentVestedFor(_depositor); // (seconds since last interaction / vesting term remaining)

        if (percentVested >= 10000) {
            // if fully vested
            delete bondInfo[_depositor]; // delete user info
            emit BondRedeemed(_depositor, info.payout, 0); // emit bond data
            HATE.safeTransfer(_depositor, info.payout);
            return info.payout;
        } else {
            // if unfinished
            // calculate payout vested
            uint payout = info.payout.mul(percentVested).div(10000);

            // store updated deposit info
            bondInfo[_depositor] = Bond({
                payout: info.payout.sub(payout),
                vesting: info.vesting.sub(block.timestamp.sub(info.lastBlockTimestamp)),
                lastBlockTimestamp: block.timestamp,
                truePricePaid: info.truePricePaid
            });

            emit BondRedeemed(_depositor, payout, bondInfo[_depositor].payout);
            HATE.safeTransfer(_depositor, payout);
            return payout;
        }
    }

    /* ======== INTERNAL HELPER FUNCTIONS ======== */

    /**
     *  @notice makes incremental adjustment to control variable
     */
    function adjust() internal {
        uint timestampCanAdjust = adjustment.lastBlockTimestamp.add(adjustment.buffer);
        if (adjustment.rate != 0 && block.timestamp >= timestampCanAdjust) {
            uint initial = terms.controlVariable;
            if (adjustment.add) {
                terms.controlVariable = terms.controlVariable.add(adjustment.rate);
                if (terms.controlVariable >= adjustment.target) {
                    adjustment.rate = 0;
                }
            } else {
                terms.controlVariable = terms.controlVariable.sub(adjustment.rate);
                if (terms.controlVariable <= adjustment.target) {
                    adjustment.rate = 0;
                }
            }
            adjustment.lastBlockTimestamp = block.timestamp;
            emit ControlVariableAdjustment(initial, terms.controlVariable, adjustment.rate, adjustment.add);
        }
    }

    /**
     *  @notice reduce total debt
     */
    function decayDebt() internal {
        totalDebt = totalDebt.sub(debtDecay());
        lastDecay = block.timestamp;
    }

    /**
     *  @notice calculate current bond price and remove floor if above
     *  @return price_ uint
     */
    function _bondPrice() internal returns (uint price_) {
        price_ = terms.controlVariable.mul(debtRatio()).div(10 ** (uint256(HATE.decimals()).sub(5)));
        if (price_ < terms.minimumPrice) {
            price_ = terms.minimumPrice;
        } else if (terms.minimumPrice != 0) {
            terms.minimumPrice = 0;
        }
    }

    /* ======== VIEW FUNCTIONS ======== */

    /**
     *  @notice calculate current bond premium
     *  @return price_ uint
     */
    function bondPrice() public view returns (uint price_) {
        price_ = terms.controlVariable.mul(debtRatio()).div(10 ** (uint256(HATE.decimals()).sub(5)));
        if (price_ < terms.minimumPrice) {
            price_ = terms.minimumPrice;
        }
    }

    /**
     *  @notice determine maximum bond size
     *  @return uint
     */
    function maxPayout() public view returns (uint) {
        return HATE.totalSupply().mul(terms.maxPayout).div(100000);
    }

    /*
     *  @param _value uint
     *  @return _payout uint
     */
    function payoutFor(uint _value) public view returns (uint _payout) {
        _payout = FixedPoint.fraction(_value, bondPrice()).decode112with18().div(1e9);
    }

    /**
     *  @notice calculate current ratio of debt to payout token supply
     *  @return debtRatio_ uint
     */
    function debtRatio() public view returns (uint debtRatio_) {
        debtRatio_ = FixedPoint
            .fraction(currentDebt().mul(10 ** HATE.decimals()), HATE.totalSupply())
            .decode112with18()
            .div(1e18);
    }

    /**
     *  @notice calculate debt factoring in decay
     *  @return uint
     */
    function currentDebt() public view returns (uint) {
        return totalDebt.sub(debtDecay());
    }

    /**
     *  @notice amount to decay total debt by
     *  @return decay_ uint
     */
    function debtDecay() public view returns (uint decay_) {
        uint timestampSinceLast = block.timestamp.sub(lastDecay);
        decay_ = totalDebt.mul(timestampSinceLast).div(terms.vestingTerm);
        if (decay_ > totalDebt) {
            decay_ = totalDebt;
        }
    }

    /**
     *  @notice calculate how far into vesting a depositor is
     *  @param _depositor address
     *  @return percentVested_ uint
     */
    function percentVestedFor(address _depositor) public view returns (uint percentVested_) {
        Bond memory bond = bondInfo[_depositor];
        uint timestampSinceLast = block.timestamp.sub(bond.lastBlockTimestamp);
        uint vesting = bond.vesting;

        if (vesting > 0) {
            percentVested_ = timestampSinceLast.mul(10000).div(vesting);
        } else {
            percentVested_ = 0;
        }
    }

    /**
     *  @notice calculate amount of payout token available for claim by depositor
     *  @param _depositor address
     *  @return pendingPayout_ uint
     */
    function pendingPayoutFor(address _depositor) external view returns (uint pendingPayout_) {
        uint percentVested = percentVestedFor(_depositor);
        uint payout = bondInfo[_depositor].payout;

        if (percentVested >= 10000) {
            pendingPayout_ = payout;
        } else {
            pendingPayout_ = payout.mul(percentVested).div(10000);
        }
    }
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity >=0.7.5;

interface IERC20 {

  function decimals() external view returns (uint8);
  
  /**
   * @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);
}

pragma solidity >=0.7.5;

interface IHATETreasury {
    function mintHATE(address to_, uint256 amount_) external;
    function valueOfToken(address _principalToken, uint _amount) external view returns (uint value_);
    function HATE() external view returns (address);
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.7.5;


// TODO(zx): replace with OZ implementation.
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies in extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    // function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
    //     require(address(this).balance >= value, "Address: insufficient balance for call");
    //     return _functionCallWithValue(target, data, value, errorMessage);
    // }
    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");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }

  /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.3._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.3._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }

    function addressToString(address _address) internal pure returns(string memory) {
        bytes32 _bytes = bytes32(uint256(_address));
        bytes memory HEX = "0123456789abcdef";
        bytes memory _addr = new bytes(42);

        _addr[0] = '0';
        _addr[1] = 'x';

        for(uint256 i = 0; i < 20; i++) {
            _addr[2+i*2] = HEX[uint8(_bytes[i + 12] >> 4)];
            _addr[3+i*2] = HEX[uint8(_bytes[i + 12] & 0x0f)];
        }

        return string(_addr);

    }
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.7.5;

import "./FullMath.sol";


library Babylonian {

    function sqrt(uint256 x) internal pure returns (uint256) {
        if (x == 0) return 0;

        uint256 xx = x;
        uint256 r = 1;
        if (xx >= 0x100000000000000000000000000000000) {
            xx >>= 128;
            r <<= 64;
        }
        if (xx >= 0x10000000000000000) {
            xx >>= 64;
            r <<= 32;
        }
        if (xx >= 0x100000000) {
            xx >>= 32;
            r <<= 16;
        }
        if (xx >= 0x10000) {
            xx >>= 16;
            r <<= 8;
        }
        if (xx >= 0x100) {
            xx >>= 8;
            r <<= 4;
        }
        if (xx >= 0x10) {
            xx >>= 4;
            r <<= 2;
        }
        if (xx >= 0x8) {
            r <<= 1;
        }
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1;
        r = (r + x / r) >> 1; // Seven iterations should be enough
        uint256 r1 = x / r;
        return (r < r1 ? r : r1);
    }
}

library BitMath {

    function mostSignificantBit(uint256 x) internal pure returns (uint8 r) {
        require(x > 0, 'BitMath::mostSignificantBit: zero');

        if (x >= 0x100000000000000000000000000000000) {
            x >>= 128;
            r += 128;
        }
        if (x >= 0x10000000000000000) {
            x >>= 64;
            r += 64;
        }
        if (x >= 0x100000000) {
            x >>= 32;
            r += 32;
        }
        if (x >= 0x10000) {
            x >>= 16;
            r += 16;
        }
        if (x >= 0x100) {
            x >>= 8;
            r += 8;
        }
        if (x >= 0x10) {
            x >>= 4;
            r += 4;
        }
        if (x >= 0x4) {
            x >>= 2;
            r += 2;
        }
        if (x >= 0x2) r += 1;
    }
}


library FixedPoint {

    struct uq112x112 {
        uint224 _x;
    }

    struct uq144x112 {
        uint256 _x;
    }

    uint8 private constant RESOLUTION = 112;
    uint256 private constant Q112 = 0x10000000000000000000000000000;
    uint256 private constant Q224 = 0x100000000000000000000000000000000000000000000000000000000;
    uint256 private constant LOWER_MASK = 0xffffffffffffffffffffffffffff; // decimal of UQ*x112 (lower 112 bits)

    function decode(uq112x112 memory self) internal pure returns (uint112) {
        return uint112(self._x >> RESOLUTION);
    }

    function decode112with18(uq112x112 memory self) internal pure returns (uint) {

        return uint(self._x) / 5192296858534827;
    }

    function fraction(uint256 numerator, uint256 denominator) internal pure returns (uq112x112 memory) {
        require(denominator > 0, 'FixedPoint::fraction: division by zero');
        if (numerator == 0) return FixedPoint.uq112x112(0);

        if (numerator <= uint144(-1)) {
            uint256 result = (numerator << RESOLUTION) / denominator;
            require(result <= uint224(-1), 'FixedPoint::fraction: overflow');
            return uq112x112(uint224(result));
        } else {
            uint256 result = FullMath.mulDiv(numerator, Q112, denominator);
            require(result <= uint224(-1), 'FixedPoint::fraction: overflow');
            return uq112x112(uint224(result));
        }
    }
    
    // square root of a UQ112x112
    // lossy between 0/1 and 40 bits
    function sqrt(uq112x112 memory self) internal pure returns (uq112x112 memory) {
        if (self._x <= uint144(-1)) {
            return uq112x112(uint224(Babylonian.sqrt(uint256(self._x) << 112)));
        }

        uint8 safeShiftBits = 255 - BitMath.mostSignificantBit(self._x);
        safeShiftBits -= safeShiftBits % 2;
        return uq112x112(uint224(Babylonian.sqrt(uint256(self._x) << safeShiftBits) << ((112 - safeShiftBits) / 2)));
    }
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.7.5;

library FullMath {
    function fullMul(uint256 x, uint256 y) private pure returns (uint256 l, uint256 h) {
        uint256 mm = mulmod(x, y, uint256(-1));
        l = x * y;
        h = mm - l;
        if (mm < l) h -= 1;
    }

    function fullDiv(
        uint256 l,
        uint256 h,
        uint256 d
    ) private pure returns (uint256) {
        uint256 pow2 = d & -d;
        d /= pow2;
        l /= pow2;
        l += h * ((-pow2) / pow2 + 1);
        uint256 r = 1;
        r *= 2 - d * r;
        r *= 2 - d * r;
        r *= 2 - d * r;
        r *= 2 - d * r;
        r *= 2 - d * r;
        r *= 2 - d * r;
        r *= 2 - d * r;
        r *= 2 - d * r;
        return l * r;
    }

    function mulDiv(
        uint256 x,
        uint256 y,
        uint256 d
    ) internal pure returns (uint256) {
        (uint256 l, uint256 h) = fullMul(x, y);

        uint256 mm = mulmod(x, y, d);
        if (mm > l) h -= 1;
        l -= mm;

        if (h == 0) return l / d;

        require(h < d, 'FullMath: FULLDIV_OVERFLOW');
        return fullDiv(l, h, d);
    }
}

// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.7.5;

import {IERC20} from "../interface/IERC20.sol";

/// @notice Safe IERC20 and ETH transfer library that safely handles missing return values.
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v3-periphery/blob/main/contracts/libraries/TransferHelper.sol)
/// Taken from Solmate
library SafeERC20 {
    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 amount
    ) internal {
        (bool success, bytes memory data) = address(token).call(
            abi.encodeWithSelector(IERC20.transferFrom.selector, from, to, amount)
        );

        require(success && (data.length == 0 || abi.decode(data, (bool))), "TRANSFER_FROM_FAILED");
    }

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 amount
    ) internal {
        (bool success, bytes memory data) = address(token).call(
            abi.encodeWithSelector(IERC20.transfer.selector, to, amount)
        );

        require(success && (data.length == 0 || abi.decode(data, (bool))), "TRANSFER_FAILED");
    }

    function safeApprove(
        IERC20 token,
        address to,
        uint256 amount
    ) internal {
        (bool success, bytes memory data) = address(token).call(
            abi.encodeWithSelector(IERC20.approve.selector, to, amount)
        );

        require(success && (data.length == 0 || abi.decode(data, (bool))), "APPROVE_FAILED");
    }

    function safeTransferETH(address to, uint256 amount) internal {
        (bool success, ) = to.call{value: amount}(new bytes(0));

        require(success, "ETH_TRANSFER_FAILED");
    }
}

// SPDX-License-Identifier: AGPL-3.0
pragma solidity ^0.7.5;


// TODO(zx): Replace all instances of SafeMath with OZ implementation
library SafeMath {

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

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

        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        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;
    }

    // Only used in the  BondingCalculator.sol
    function sqrrt(uint256 a) internal pure returns (uint c) {
        if (a > 3) {
            c = a;
            uint b = add( div( a, 2), 1 );
            while (b < c) {
                c = b;
                b = div( add( div( a, b ), b), 2 );
            }
        } else if (a != 0) {
            c = 1;
        }
    }

}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_treasury","type":"address"},{"internalType":"address","name":"_principalToken","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"deposit","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"payout","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"expires","type":"uint256"}],"name":"BondCreated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"internalPrice","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"debtRatio","type":"uint256"}],"name":"BondPriceChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"payout","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"remaining","type":"uint256"}],"name":"BondRedeemed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"initialBCV","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newBCV","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"adjustment","type":"uint256"},{"indexed":false,"internalType":"bool","name":"addition","type":"bool"}],"name":"ControlVariableAdjustment","type":"event"},{"inputs":[],"name":"adjustment","outputs":[{"internalType":"bool","name":"add","type":"bool"},{"internalType":"uint256","name":"rate","type":"uint256"},{"internalType":"uint256","name":"target","type":"uint256"},{"internalType":"uint256","name":"buffer","type":"uint256"},{"internalType":"uint256","name":"lastBlockTimestamp","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"bondInfo","outputs":[{"internalType":"uint256","name":"payout","type":"uint256"},{"internalType":"uint256","name":"vesting","type":"uint256"},{"internalType":"uint256","name":"lastBlockTimestamp","type":"uint256"},{"internalType":"uint256","name":"truePricePaid","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"bondPrice","outputs":[{"internalType":"uint256","name":"price_","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"currentDebt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"debtDecay","outputs":[{"internalType":"uint256","name":"decay_","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"debtRatio","outputs":[{"internalType":"uint256","name":"debtRatio_","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint256","name":"_maxPrice","type":"uint256"},{"internalType":"address","name":"_depositor","type":"address"}],"name":"deposit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"feePercent","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeTo","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_controlVariable","type":"uint256"},{"internalType":"uint256","name":"_vestingTerm","type":"uint256"},{"internalType":"uint256","name":"_minimumPrice","type":"uint256"},{"internalType":"uint256","name":"_maxPayout","type":"uint256"},{"internalType":"uint256","name":"_maxDebt","type":"uint256"},{"internalType":"uint256","name":"_initialDebt","type":"uint256"}],"name":"initializeBond","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"lastDecay","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxPayout","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_value","type":"uint256"}],"name":"payoutFor","outputs":[{"internalType":"uint256","name":"_payout","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_depositor","type":"address"}],"name":"pendingPayoutFor","outputs":[{"internalType":"uint256","name":"pendingPayout_","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_depositor","type":"address"}],"name":"percentVestedFor","outputs":[{"internalType":"uint256","name":"percentVested_","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_depositor","type":"address"}],"name":"redeem","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_addition","type":"bool"},{"internalType":"uint256","name":"_increment","type":"uint256"},{"internalType":"uint256","name":"_target","type":"uint256"},{"internalType":"uint256","name":"_buffer","type":"uint256"}],"name":"setAdjustment","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"enum BondERC20.PARAMETER","name":"_parameter","type":"uint8"},{"internalType":"uint256","name":"_input","type":"uint256"}],"name":"setBondTerms","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"feeTo_","type":"address"},{"internalType":"uint256","name":"feePercent_","type":"uint256"}],"name":"setFeeAndFeeTo","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"terms","outputs":[{"internalType":"uint256","name":"controlVariable","type":"uint256"},{"internalType":"uint256","name":"vestingTerm","type":"uint256"},{"internalType":"uint256","name":"minimumPrice","type":"uint256"},{"internalType":"uint256","name":"maxPayout","type":"uint256"},{"internalType":"uint256","name":"maxDebt","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalDebt","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalPayoutGiven","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalPrincipalBonded","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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000000000000000000000000710154a8503428d53710a620b8a1c970beddb8ca0000000000000000000000000fe0ed7f146cb12e4b9759aff4fa8d34571802ca

-----Decoded View---------------
Arg [0] : _treasury (address): 0x710154A8503428D53710A620B8A1C970BeDdB8CA
Arg [1] : _principalToken (address): 0x0fE0Ed7F146Cb12e4B9759afF4FA8d34571802ca

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000710154a8503428d53710a620b8a1c970beddb8ca
Arg [1] : 0000000000000000000000000fe0ed7f146cb12e4b9759aff4fa8d34571802ca