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// SPDX-License-Identifier: MIT

/**

*Submitted for verification at BscScan.com on 2021-03-28

// File: src/lib/GSN/Context.sol

pragma solidity >=0.4.0;

* @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.

contract Context {

// Empty internal constructor, to prevent people from mistakenly deploying

// an instance of this contract, which should be used via inheritance.

constructor() internal {}

function _msgSender() internal view returns (address payable) {

return msg.sender;

}

function _msgData() internal view returns (bytes memory) {

this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691

return msg.data;

}

// File: src/lib/access/Ownable.sol

pragma solidity >=0.4.0;

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 {

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 {

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");

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 {

function renounceOwnership() public 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 {

function transferOwnership(address newOwner) public onlyOwner {

require(newOwner != address(0), "Ownable: new owner is the zero address");

_transferOwnership(newOwner);

}

/**

* @dev Transfers ownership of the contract to a new account (`newOwner`).

function _transferOwnership(address newOwner) internal {

require(newOwner != address(0), 'Ownable: new owner is the zero address');

emit OwnershipTransferred(_owner, newOwner);

_owner = newOwner;

}

// File: src/lib/token/BEP20/IBEP20.sol

* @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) {

pragma solidity >=0.4.0;

this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691

return msg.data;

}

interface IBEP20 {

/**

* @dev Returns the amount of tokens in existence.

function totalSupply() external view returns (uint256);

/**

* @dev Returns the token decimals.

function decimals() external view returns (uint8);

/**

* @dev Returns the token symbol.

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

/**

* @dev Returns the token name.

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

/**

* @dev Returns the bep token owner.

function getOwner() external view returns (address);

/**

* @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);

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: src/lib/math/SafeMath.sol

pragma solidity >=0.4.0;

/**

* @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");

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");

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) {

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");

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");

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) {

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");

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) {

function mod(

uint256 a,

uint256 b,

string memory errorMessage

) internal pure returns (uint256) {

require(b != 0, errorMessage);

return a % b;

}

function min(uint256 x, uint256 y) internal pure returns (uint256 z) {

z = x < y ? x : y;

}

// babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)

function sqrt(uint256 y) internal pure returns (uint256 z) {

if (y > 3) {

z = y;

uint256 x = y / 2 + 1;

while (x < z) {

z = x;

x = (y / x + x) / 2;

}

} else if (y != 0) {

z = 1;

}

// File: src/lib/utils/Address.sol

pragma solidity ^0.6.2;

/**

* @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) {

// According to EIP-1052, 0x0 is the value returned for not-yet created accounts

// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned

// for accounts without code, i.e. `keccak256('')`

bytes32 codehash;

bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;

// solhint-disable-next-line no-inline-assembly

assembly {

codehash := extcodehash(account)

}

return (codehash != accountHash && codehash != 0x0);

}

/**

* @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 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);

}

// File: src/lib/token/BEP20/BEP20.sol

pragma solidity >=0.4.0;

/**

* @dev Implementation of the {IBEP20} 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 {BEP20PresetMinterPauser}.

* TIP: For a detailed writeup see our guide

* https://forum.zeppelin.solutions/t/how-to-implement-BEP20-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 BEP20 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 {IBEP20-approve}.

contract BEP20 is Context, IBEP20, Ownable {

using SafeMath for uint256;

using Address for address;

mapping(address => uint256) private _balances;

mapping(address => uint256) internal _balances;

mapping(address => mapping(address => uint256)) private _allowances;

mapping(address => mapping(address => uint256)) internal _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 bep token owner.

function getOwner() external override view returns (address) {

return owner();

}

/**

* @dev Returns the name of the token.

* @dev Returns the token name.

function name() public override view returns (string memory) {

return _name;

}

/**

* @dev Returns the symbol of the token, usually a shorter version of the

* @dev Returns the token decimals.

* name.

function symbol() public override view returns (string memory) {

function decimals() public override view returns (uint8) {

return _symbol;

return _decimals;

}

/**

* @dev Returns the number of decimals used to get its user representation.

* @dev Returns the token symbol.

function decimals() public override view returns (uint8) {

function symbol() public override view returns (string memory) {

return _decimals;

return _symbol;

}

/**

* @dev See {BEP20-totalSupply}.

function totalSupply() public override view returns (uint256) {

return _totalSupply;

}

/**

* @dev See {BEP20-balanceOf}.

function balanceOf(address account) public override view returns (uint256) {

return _balances[account];

}

/**

* @dev See {BEP20-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 override returns (bool) {

function transfer(address recipient, uint256 amount) public virtual override returns (bool) {

_transfer(_msgSender(), recipient, amount);

return true;

}

/**

* @dev See {BEP20-allowance}.

function allowance(address owner, address spender) public override view returns (uint256) {

return _allowances[owner][spender];

}

/**

* @dev See {BEP20-approve}.

* Requirements:

* - `spender` cannot be the zero address.

function approve(address spender, uint256 amount) public override returns (bool) {

_approve(_msgSender(), spender, amount);

return true;

}

/**

* @dev See {BEP20-transferFrom}.

* Emits an {Approval} event indicating the updated allowance. This is not

* required by the EIP. See the note at the beginning of {BEP20};

* 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 override returns (bool) {

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, 'BEP20: 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 {BEP20-approve}.

* Emits an {Approval} event indicating the updated allowance.

* Requirements:

* - `spender` cannot be the zero address.

function increaseAllowance(address spender, uint256 addedValue) public 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 {BEP20-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 returns (bool) {

_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, 'BEP20: decreased allowance below zero'));

_approve(

_msgSender(),

spender,

_allowances[_msgSender()][spender].sub(subtractedValue, 'BEP20: decreased allowance below zero')

);

return true;

}

/**

* @dev Creates `amount` tokens and assigns them to `msg.sender`, increasing

* the total supply.

* Requirements

* - `msg.sender` must be the token owner

* - `msg.sender` mu

function mint(uint256 amount) public onlyOwner returns (bool) {

_mint(_msgSender(), amount);

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 {

require(sender != address(0), 'BEP20: transfer from the zero address');

require(recipient != address(0), 'BEP20: transfer to the zero address');

_balances[sender] = _balances[sender].sub(amount, 'BEP20: 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 {

require(account != address(0), 'BEP20: mint to the zero address');

_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 {

require(account != address(0), 'BEP20: burn from the zero address');

_balances[account] = _balances[account].sub(amount, 'BEP20: 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 is 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 {

require(owner != address(0), 'BEP20: approve from the zero address');

require(spender != address(0), 'BEP20: approve to the zero address');

_allowances[owner][spender] = amount;

emit Approval(owner, spender, amount);

}

/**

* @dev Destroys `amount` tokens from `account`.`amount` is then deducted

* from the caller's allowance.

* See {_burn} and {_approve}.

function _burnFrom(address account, uint256 amount) internal {

_burn(account, amount);

_approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, 'BEP20: burn amount exceeds allowance'));

}

// EggToken with Governance.

contract EggToken is BEP20('Goose Golden Egg', 'EGG') {

/// @notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterChef).

function mint(address _to, uint256 _amount) public onlyOwner {

_mint(_to, _amount);

_moveDelegates(address(0), _delegates[_to], _amount);

}

// Copied and modified from YAM code:

// https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernanceStorage.sol

// https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernance.sol

// Which is copied and modified from COMPOUND:

// https://github.com/compound-finance/compound-protocol/blob/master/contracts/Governance/Comp.sol

/// @notice A record of each accounts delegate

mapping (address => address) internal _delegates;

/// @notice A checkpoint for marking number of votes from a given block

struct Checkpoint {

uint32 fromBlock;

uint256 votes;

}

/// @notice A record of votes checkpoints for each account, by index

mapping (address => mapping (uint32 => Checkpoint)) public checkpoints;

/// @notice The number of checkpoints for each account

mapping (address => uint32) public numCheckpoints;

/// @notice The EIP-712 typehash for the contract's domain

bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint256 chainId,address verifyingContract)");

/// @notice The EIP-712 typehash for the delegation struct used by the contract

bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint256 nonce,uint256 expiry)");

/// @notice A record of states for signing / validating signatures

mapping (address => uint) public nonces;

/// @notice An event thats emitted when an account changes its delegate

event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);

/// @notice An event thats emitted when a delegate account's vote balance changes

event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);

/**

* @notice Delegate votes from `msg.sender` to `delegatee`

* @param delegator The address to get delegatee for

function delegates(address delegator)

external

view

returns (address)

{

return _delegates[delegator];

}

/**

* @notice Delegate votes from `msg.sender` to `delegatee`

* @param delegatee The address to delegate votes to

function delegate(address delegatee) external {

return _delegate(msg.sender, delegatee);

}

/**

* @notice Delegates votes from signatory to `delegatee`

* @param delegatee The address to delegate votes to

* @param nonce The contract state required to match the signature

* @param expiry The time at which to expire the signature

* @param v The recovery byte of the signature

* @param r Half of the ECDSA signature pair

* @param s Half of the ECDSA signature pair

function delegateBySig(

address delegatee,

uint nonce,

uint expiry,

uint8 v,

bytes32 r,

bytes32 s

)

external

{

bytes32 domainSeparator = keccak256(

abi.encode(

DOMAIN_TYPEHASH,

keccak256(bytes(name())),

getChainId(),

address(this)

)

);

bytes32 structHash = keccak256(

abi.encode(

DELEGATION_TYPEHASH,

delegatee,

nonce,

expiry

)

);

bytes32 digest = keccak256(

abi.encodePacked(

"\x19\x01",

domainSeparator,

structHash

)

);

address signatory = ecrecover(digest, v, r, s);

require(signatory != address(0), "EGG::delegateBySig: invalid signature");

Original Text

// SPDX-License-Identifier: MIT

pragma solidity >=0.4.0;

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;
    }
}

/*
 * @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;
    }
}

interface IBEP20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

/**
     * @dev Returns the token decimals.
     */
    function decimals() external view returns (uint8);

/**
     * @dev Returns the token symbol.
     */
    function symbol() external view returns (string memory);

/**
     * @dev Returns the token name.
     */
    function name() external view returns (string memory);

/**
     * @dev Returns the bep token owner.
     */
    function getOwner() external view returns (address);

/**
     * @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);
}

/**
 * @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;
    }
}

/**
 * @dev Implementation of the {IBEP20} 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 {BEP20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-BEP20-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 BEP20 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 {IBEP20-approve}.
 */
contract BEP20 is Context, IBEP20, Ownable {
    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 bep token owner.
     */
    function getOwner() external override view returns (address) {
        return owner();
    }

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

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

/**
    * @dev Returns the number of decimals used to get its user representation.
    */
    function decimals() public override view returns (uint8) {
        return _decimals;
    }

/**
     * @dev See {BEP20-totalSupply}.
     */
    function totalSupply() public override view returns (uint256) {
        return _totalSupply;
    }

/**
     * @dev See {BEP20-balanceOf}.
     */
    function balanceOf(address account) public override view returns (uint256) {
        return _balances[account];
    }

/**
     * @dev See {BEP20-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 override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

/**
     * @dev See {BEP20-allowance}.
     */
    function allowance(address owner, address spender) public override view returns (uint256) {
        return _allowances[owner][spender];
    }

/**
     * @dev See {BEP20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

/**
     * @dev See {BEP20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {BEP20};
     *
     * 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 override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowances[sender][_msgSender()].sub(amount, 'BEP20: 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 {BEP20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public 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 {BEP20-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 returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, 'BEP20: decreased allowance below zero'));
        return true;
    }

/**
     * @dev Creates `amount` tokens and assigns them to `msg.sender`, increasing
     * the total supply.
     *
     * Requirements
     *
     * - `msg.sender` must be the token owner
     */
    function mint(uint256 amount) public onlyOwner returns (bool) {
        _mint(_msgSender(), amount);
        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 {
        require(sender != address(0), 'BEP20: transfer from the zero address');
        require(recipient != address(0), 'BEP20: transfer to the zero address');

_balances[sender] = _balances[sender].sub(amount, 'BEP20: 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 {
        require(account != address(0), 'BEP20: mint to the zero address');

_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 {
        require(account != address(0), 'BEP20: burn from the zero address');

_balances[account] = _balances[account].sub(amount, 'BEP20: 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 is 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 {
        require(owner != address(0), 'BEP20: approve from the zero address');
        require(spender != address(0), 'BEP20: approve to the zero address');

_allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

/**
     * @dev Destroys `amount` tokens from `account`.`amount` is then deducted
     * from the caller's allowance.
     *
     * See {_burn} and {_approve}.
     */
    function _burnFrom(address account, uint256 amount) internal {
        _burn(account, amount);
        _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, 'BEP20: burn amount exceeds allowance'));
    }
}

// EggToken with Governance.
contract EggToken is BEP20('Goose Golden Egg', 'EGG') {
    /// @notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterChef).
    function mint(address _to, uint256 _amount) public onlyOwner {
        _mint(_to, _amount);
        _moveDelegates(address(0), _delegates[_to], _amount);
    }

// Copied and modified from YAM code:
    // https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernanceStorage.sol
    // https://github.com/yam-finance/yam-protocol/blob/master/contracts/token/YAMGovernance.sol
    // Which is copied and modified from COMPOUND:
    // https://github.com/compound-finance/compound-protocol/blob/master/contracts/Governance/Comp.sol

/// @notice A record of each accounts delegate
    mapping (address => address) internal _delegates;

/// @notice A checkpoint for marking number of votes from a given block
    struct Checkpoint {
        uint32 fromBlock;
        uint256 votes;
    }

/// @notice A record of votes checkpoints for each account, by index
    mapping (address => mapping (uint32 => Checkpoint)) public checkpoints;

/// @notice The number of checkpoints for each account
    mapping (address => uint32) public numCheckpoints;

/// @notice The EIP-712 typehash for the contract's domain
    bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint256 chainId,address verifyingContract)");

/// @notice The EIP-712 typehash for the delegation struct used by the contract
    bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint256 nonce,uint256 expiry)");

/// @notice A record of states for signing / validating signatures
    mapping (address => uint) public nonces;

/// @notice An event thats emitted when an account changes its delegate
    event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);

/// @notice An event thats emitted when a delegate account's vote balance changes
    event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);

/**
     * @notice Delegate votes from `msg.sender` to `delegatee`
     * @param delegator The address to get delegatee for
     */
    function delegates(address delegator)
        external
        view
        returns (address)
    {
        return _delegates[delegator];
    }

/**
    * @notice Delegate votes from `msg.sender` to `delegatee`
    * @param delegatee The address to delegate votes to
    */
    function delegate(address delegatee) external {
        return _delegate(msg.sender, delegatee);
    }

/**
     * @notice Delegates votes from signatory to `delegatee`
     * @param delegatee The address to delegate votes to
     * @param nonce The contract state required to match the signature
     * @param expiry The time at which to expire the signature
     * @param v The recovery byte of the signature
     * @param r Half of the ECDSA signature pair
     * @param s Half of the ECDSA signature pair
     */
    function delegateBySig(
        address delegatee,
        uint nonce,
        uint expiry,
        uint8 v,
        bytes32 r,
        bytes32 s
    )
        external
    {
        bytes32 domainSeparator = keccak256(
            abi.encode(
                DOMAIN_TYPEHASH,
                keccak256(bytes(name())),
                getChainId(),
                address(this)
            )
        );

bytes32 structHash = keccak256(
            abi.encode(
                DELEGATION_TYPEHASH,
                delegatee,
                nonce,
                expiry
            )
        );

bytes32 digest = keccak256(
            abi.encodePacked(
                "\x19\x01",
                domainSeparator,
                structHash
            )
        );

address signatory = ecrecover(digest, v, r, s);
        require(signatory != address(0), "EGG::delegateBySig: invalid signature");
        require(nonce == nonces[signatory]++, "EGG::delegateBySig: invalid nonce");
        require(now <= expiry, "EGG::delegateBySig: signature expired");
        return _delegate(signatory, delegatee);
    }

/**
     * @notice Gets the current votes balance for `account`
     * @param account The address to get votes balance
     * @return The number of current votes for `account`
     */
    function getCurrentVotes(address account)
        external
        view
        returns (uint256)
    {
        uint32 nCheckpoints = numCheckpoints[account];
        return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
    }

/**
     * @notice Determine the prior number of votes for an account as of a block number
     * @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
     * @param account The address of the account to check
     * @param blockNumber The block number to get the vote balance at
     * @return The number of votes the account had as of the given block
     */
    function getPriorVotes(address account, uint blockNumber)
        external
        view
        returns (uint256)
    {
        require(blockNumber < block.number, "EGG::getPriorVotes: not yet determined");

uint32 nCheckpoints = numCheckpoints[account];
        if (nCheckpoints == 0) {
            return 0;
        }

// First check most recent balance
        if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
            return checkpoints[account][nCheckpoints - 1].votes;
        }

// Next check implicit zero balance
        if (checkpoints[account][0].fromBlock > blockNumber) {
            return 0;
        }

uint32 lower = 0;
        uint32 upper = nCheckpoints - 1;
        while (upper > lower) {
            uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
            Checkpoint memory cp = checkpoints[account][center];
            if (cp.fromBlock == blockNumber) {
                return cp.votes;
            } else if (cp.fromBlock < blockNumber) {
                lower = center;
            } else {
                upper = center - 1;
            }
        }
        return checkpoints[account][lower].votes;
    }

function _delegate(address delegator, address delegatee)
        internal
    {
        address currentDelegate = _delegates[delegator];
        uint256 delegatorBalance = balanceOf(delegator); // balance of underlying EGGs (not scaled);
        _delegates[delegator] = delegatee;

emit DelegateChanged(delegator, currentDelegate, delegatee);

_moveDelegates(currentDelegate, delegatee, delegatorBalance);
    }

function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal {
        if (srcRep != dstRep && amount > 0) {
            if (srcRep != address(0)) {
                // decrease old representative
                uint32 srcRepNum = numCheckpoints[srcRep];
                uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
                uint256 srcRepNew = srcRepOld.sub(amount);
                _writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
            }

if (dstRep != address(0)) {
                // increase new representative
                uint32 dstRepNum = numCheckpoints[dstRep];
                uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
                uint256 dstRepNew = dstRepOld.add(amount);
                _writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
            }
        }
    }

function _writeCheckpoint(
        address delegatee,
        uint32 nCheckpoints,
        uint256 oldVotes,
        uint256 newVotes
    )
        internal
    {
        uint32 blockNumber = safe32(block.number, "EGG::_writeCheckpoint: block number exceeds 32 bits");

if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
            checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
        } else {
            checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
            numCheckpoints[delegatee] = nCheckpoints + 1;
        }

emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
    }

function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
        require(n < 2**32, errorMessage);
        return uint32(n);
    }

function getChainId() internal pure returns (uint) {
        uint256 chainId;
        assembly { chainId := chainid() }
        return chainId;
    }
}

Changed Text

/**
 *Submitted for verification at BscScan.com on 2021-03-28
*/

// File: src/lib/GSN/Context.sol

pragma solidity >=0.4.0;

/*
 * @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.
 */
contract Context {
    // Empty internal constructor, to prevent people from mistakenly deploying
    // an instance of this contract, which should be used via inheritance.
    constructor() internal {}

function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }

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

// File: src/lib/access/Ownable.sol

pragma solidity >=0.4.0;

/**
 * @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.
 */
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 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 onlyOwner {
        _transferOwnership(newOwner);
    }

/**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     */
    function _transferOwnership(address newOwner) internal {
        require(newOwner != address(0), 'Ownable: new owner is the zero address');
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// File: src/lib/token/BEP20/IBEP20.sol

pragma solidity >=0.4.0;

interface IBEP20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

/**
     * @dev Returns the token decimals.
     */
    function decimals() external view returns (uint8);

/**
     * @dev Returns the token symbol.
     */
    function symbol() external view returns (string memory);

/**
     * @dev Returns the token name.
     */
    function name() external view returns (string memory);

/**
     * @dev Returns the bep token owner.
     */
    function getOwner() external view returns (address);

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

/**
     * @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);

// File: src/lib/math/SafeMath.sol

pragma solidity >=0.4.0;

return c;
    }

/**
     * @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;
    }

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

return c;
    }

/**
     * @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 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;
    }

function min(uint256 x, uint256 y) internal pure returns (uint256 z) {
        z = x < y ? x : y;
    }

// babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }
}

// File: src/lib/utils/Address.sol

pragma solidity ^0.6.2;

/**
 * @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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            codehash := extcodehash(account)
        }
        return (codehash != accountHash && codehash != 0x0);
    }

/**
     * @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 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);
            }
        }
    }
}

// File: src/lib/token/BEP20/BEP20.sol

pragma solidity >=0.4.0;

mapping(address => uint256) internal _balances;

mapping(address => mapping(address => uint256)) internal _allowances;

uint256 private _totalSupply;

string private _name;
    string private _symbol;
    uint8 private _decimals;

/**
     * @dev Returns the bep token owner.
     */
    function getOwner() external override view returns (address) {
        return owner();
    }

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

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

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

/**
     * @dev See {BEP20-totalSupply}.
     */
    function totalSupply() public override view returns (uint256) {
        return _totalSupply;
    }

/**
     * @dev See {BEP20-balanceOf}.
     */
    function balanceOf(address account) public override view returns (uint256) {
        return _balances[account];
    }

/**
     * @dev See {BEP20-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 {BEP20-allowance}.
     */
    function allowance(address owner, address spender) public override view returns (uint256) {
        return _allowances[owner][spender];
    }

/**
     * @dev See {BEP20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {BEP20};
     *
     * 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, 'BEP20: transfer amount exceeds allowance')
        );
        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 {BEP20-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 returns (bool) {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender].sub(subtractedValue, 'BEP20: 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), 'BEP20: transfer from the zero address');
        require(recipient != address(0), 'BEP20: transfer to the zero address');

_totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

_balances[account] = _balances[account].sub(amount, 'BEP20: 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 is 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 {
        require(owner != address(0), 'BEP20: approve from the zero address');
        require(spender != address(0), 'BEP20: approve to the zero address');

_allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

/**
     * @dev Destroys `amount` tokens from `account`.`amount` is then deducted
     * from the caller's allowance.
     *
     * See {_burn} and {_approve}.
     */
    function _burnFrom(address account, uint256 amount) internal {
        _burn(account, amount);
        _approve(
            account,
            _msgSender(),
            _allowances[account][_msgSender()].sub(amount, 'BEP20: burn amount exceeds allowance')
        );
    }
}

// File: src/RuneToken.sol

pragma solidity 0.6.12;

// RuneToken with Governance.
contract RuneToken is BEP20('Rune', 'RUNE') {
    uint256 public vaultFee = 0;
    uint256 public charityFee = 0;
    uint256 public devFee = 0;

address public vaultAddress;
    address public charityAddress;
    address public devAddress;

mapping (address => bool) public isExcluded;
    address[] public excluded;

bool mintable = true;

/// @notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterChef).
    function mint(address _to, uint256 _amount) public onlyOwner {
        require(mintable == true, 'Minting has been forever disabled');
        _mint(_to, _amount);
        _moveDelegates(address(0), delegateList[_to], _amount);
    }

/// @notice A record of each accounts delegate
    mapping (address => address) internal delegateList;