Contract

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.7.3;

import "./BurnAddress.sol";
import "./StakeToken.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Pausable.sol";

contract TokenSwap is Ownable, Pausable {

  using SafeMath for uint256;
  using SafeERC20 for IERC20;
  uint256 public swapFromQuantity;
  uint256 public swapToQuantity;


  // the burn address is the address of a contract with no functions
  // this makes the swap contract usable with a token contract that does not allow transferring to the 0x0 address
  // it also guarantees that no one has the private key to the burn address
  address public burnAddress;
  IERC20 public fromToken;
  StakeToken public toToken;

  event Swap(
    address indexed sender,
    uint256 sentAmount,
    uint256 receivedAmount
  );

  /**
  * @param _swapFromQuantity: denominator in the swapping fraction (e.g. 30 NewTokens for 100 OldTokens)
  * @param _swapToQuantity: numerator in the swapping fraction, respectively
  * @param _fromTokenAddress: source token, the one being swapped
  * @param _toTokenAddress: destination token, the one we mint and give out
  */
  constructor(
    uint256 _swapFromQuantity,
    uint256 _swapToQuantity,
    address _fromTokenAddress,
    address _toTokenAddress
  ) {
    require(_swapFromQuantity > 0, "TokenSwap: Trying to set zero numerator");
    require(_swapToQuantity > 0, "TokenSwap: Trying to set zero denominator");
    require(_fromTokenAddress != address(0), "TokenSwap: Trying to set zero address source token");
    require(_toTokenAddress != address(0), "TokenSwap: Trying to set zero address destination token");

    swapFromQuantity = _swapFromQuantity;
    swapToQuantity = _swapToQuantity;
    burnAddress = address(new BurnAddress());
    fromToken = IERC20(_fromTokenAddress);
    toToken = StakeToken(_toTokenAddress);
  }

  /**
  * Performs the swap for the given amount of source tokens. Uses pull, so needs allowance
  *
  * @param fromAmount: how many tokens the contract will attempt to pull
  */
  function swap(uint256 fromAmount) public whenNotPaused {
    require(fromAmount > 0, "TokenSwap: Amount of swapped tokens cannot be zero");
    fromToken.safeTransferFrom(msg.sender, burnAddress, fromAmount);
    uint256 exchangeAmount = fromAmount.mul(swapToQuantity).div(swapFromQuantity);
    toToken.mint(msg.sender, exchangeAmount);
    emit Swap(msg.sender, fromAmount, exchangeAmount);
  }

  function pause() public onlyOwner {
    _pause();
  }

  function unpause() public onlyOwner {
    _unpause();
  }

  /**
  * View for the source token
  */
  function fromTokenAddress() public view returns (address) {
    return address(fromToken);
  }

  /**
  * View for the exchange ratio (returns numerator and denominator)
  */
  function swapRatio() public view returns (uint256, uint256) {
    return (swapFromQuantity, swapToQuantity);
  }

  /**
  * View for the destination token
  */
  function toTokenAddress() public view returns (address) {
    return address(toToken);
  }
}

// SPDX-License-Identifier: UNLICENSED
// the purpose of this contract is to provide an address that certainly has no private key associated with it
// it has no functions so it cannot transfer tokens that have been sent to it
pragma solidity 0.7.3;

contract BurnAddress {

}

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.7.3;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/math/SafeMath.sol";
import "./interfaces/IStakingContract.sol";

contract StakeToken is ERC20, Ownable {
  using SafeMath for uint256;

  mapping (address => bool) private _isMinter;
  bool private _isInitialized;
  IStakingContract private _stakingContract;

  modifier onlyMinter {
    require(_isMinter[msg.sender]);
    _;
  }

  /**
  * @param name: ERC20 name of the token
  * @param symbol: ERC20 symbol (ticker) of the token
  */
  constructor(
    string memory name,
    string memory symbol
  )
  ERC20(name, symbol)
  {
    _setupDecimals(8);
  }

  /**
  * Sets up minters and initializes the link to the staking contract
  *
  * @param minterAddresses: list of addresses to receive minter roles
  * @param stakingContract: address of the staking contract, needs to support IStakingContract
  */
  function init(
    address[] calldata minterAddresses,
    address stakingContract
  )
  external
  onlyOwner
  {
    require(stakingContract != address(0), "Staking contract cannot be zero address");
    require(!_isInitialized, "Minters are already set");
    require(minterAddresses.length > 0, "Trying to initialize with no minters");
    for (uint8 i=0; i<minterAddresses.length; i++) {
      require(minterAddresses[i]  != address(0), "StakeToken: Trying to init with a zero address minter");
      _isMinter[minterAddresses[i]] = true;
    }
    _stakingContract = IStakingContract(stakingContract);
    _isInitialized = true;
  }

  /**
  * Minting wrapper for the privileged role
  */
  function mint(address account, uint256 amount) public onlyMinter {
    require(account != address(0), "StakeToken: Trying to mint to zero address");
    require(amount > 0, "StakeToken: Trying to mint zero tokens");
    _mint(account, amount);
  }

  /**
  * Total supply that includes "virtual" tokens which will be minted by staking, to date
  */
  function totalSupplyVirtual() public view returns (uint256) {
    return totalSupply().add(_stakingContract.totalUnmintedInterest());
  }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `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);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    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));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        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).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev 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) {
        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;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../GSN/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../GSN/Context.sol";

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
    /**
     * @dev Emitted when the pause is triggered by `account`.
     */
    event Paused(address account);

    /**
     * @dev Emitted when the pause is lifted by `account`.
     */
    event Unpaused(address account);

    bool private _paused;

    /**
     * @dev Initializes the contract in unpaused state.
     */
    constructor () internal {
        _paused = false;
    }

    /**
     * @dev Returns true if the contract is paused, and false otherwise.
     */
    function paused() public view returns (bool) {
        return _paused;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is not paused.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    modifier whenNotPaused() {
        require(!_paused, "Pausable: paused");
        _;
    }

    /**
     * @dev Modifier to make a function callable only when the contract is paused.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    modifier whenPaused() {
        require(_paused, "Pausable: not paused");
        _;
    }

    /**
     * @dev Triggers stopped state.
     *
     * Requirements:
     *
     * - The contract must not be paused.
     */
    function _pause() internal virtual whenNotPaused {
        _paused = true;
        emit Paused(_msgSender());
    }

    /**
     * @dev Returns to normal state.
     *
     * Requirements:
     *
     * - The contract must be paused.
     */
    function _unpause() internal virtual whenPaused {
        _paused = false;
        emit Unpaused(_msgSender());
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../../GSN/Context.sol";
import "./IERC20.sol";
import "../../math/SafeMath.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20 {
    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;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name_, string memory symbol_) public {
        _name = name_;
        _symbol = symbol_;
        _decimals = 18;
    }

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

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
     * called.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    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 Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    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;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    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);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     */
    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);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    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);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    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);
    }

    /**
     * @dev Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal {
        _decimals = decimals_;
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be to transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.7.3;

interface IStakingContract {
  function totalUnmintedInterest() external view returns (uint256);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with 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;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on 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");
        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);
    }

    /**
     * @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);
    }

    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);
            }
        }
    }
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"uint256","name":"_swapFromQuantity","type":"uint256"},{"internalType":"uint256","name":"_swapToQuantity","type":"uint256"},{"internalType":"address","name":"_fromTokenAddress","type":"address"},{"internalType":"address","name":"_toTokenAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Paused","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"sentAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"receivedAmount","type":"uint256"}],"name":"Swap","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"account","type":"address"}],"name":"Unpaused","type":"event"},{"inputs":[],"name":"burnAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"fromToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"fromTokenAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"fromAmount","type":"uint256"}],"name":"swap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"swapFromQuantity","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"swapRatio","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"swapToQuantity","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"toToken","outputs":[{"internalType":"contract StakeToken","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"toTokenAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000010000000000000000000000005af2be193a6abca9c8817001f45744777db307560000000000000000000000003c4b6e6e1ea3d4863700d7f76b36b7f3d3f13e3d

-----Decoded View---------------
Arg [0] : _swapFromQuantity (uint256): 1
Arg [1] : _swapToQuantity (uint256): 1
Arg [2] : _fromTokenAddress (address): 0x5Af2Be193a6ABCa9c8817001F45744777Db30756
Arg [3] : _toTokenAddress (address): 0x3C4B6E6e1eA3D4863700D7F76b36B7f3D3f13E3d

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [2] : 0000000000000000000000005af2be193a6abca9c8817001f45744777db30756
Arg [3] : 0000000000000000000000003c4b6e6e1ea3d4863700d7f76b36b7f3d3f13e3d