Contract Name:
PhenixFinance
Contract Source Code:
File 1 of 1 : PhenixFinance
// File: contracts/InterfaceLP.sol
pragma solidity ^0.7.4;
interface InterfaceLP {
function sync() external;
}
// File: contracts/SafeMathInt.sol
pragma solidity ^0.7.4;
library SafeMathInt {
int256 private constant MIN_INT256 = int256(1) << 255;
int256 private constant MAX_INT256 = ~(int256(1) << 255);
function mul(int256 a, int256 b) internal pure returns (int256) {
int256 c = a * b;
require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
require((b == 0) || (c / b == a));
return c;
}
function div(int256 a, int256 b) internal pure returns (int256) {
require(b != -1 || a != MIN_INT256);
return a / b;
}
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a));
return c;
}
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a));
return c;
}
function abs(int256 a) internal pure returns (int256) {
require(a != MIN_INT256);
return a < 0 ? -a : a;
}
}
// File: contracts/SafeMath.sol
pragma solidity ^0.7.4;
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
// File: contracts/Ownable.sol
pragma solidity ^0.7.4;
contract Ownable {
address private _owner;
event OwnershipRenounced(address indexed previousOwner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
_owner = msg.sender;
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(isOwner());
_;
}
function isOwner() public view returns (bool) {
return msg.sender == _owner;
}
function renounceOwnership() public onlyOwner {
emit OwnershipRenounced(_owner);
_owner = address(0);
}
function transferOwnership(address newOwner) public onlyOwner {
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal {
require(newOwner != address(0));
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// File: contracts/IVVSRouter01.sol
pragma solidity ^0.7.4;
interface IVVSRouter01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
)
external
returns (
uint256 amountA,
uint256 amountB,
uint256 liquidity
);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function removeLiquidity(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETH(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountToken, uint256 amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETHWithPermit(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountToken, uint256 amountETH);
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactETHForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);
function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);
function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);
function getAmountsIn(uint256 amountOut, address[] calldata path)
external
view
returns (uint256[] memory amounts);
}
// File: contracts/IVVSRouter.sol
pragma solidity ^0.7.4;
interface IVVSRouter is IVVSRouter01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
// File: contracts/IVVSFactory.sol
pragma solidity ^0.7.4;
interface IVVSFactory {
event PairCreated(
address indexed token0,
address indexed token1,
address pair,
uint256
);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB)
external
view
returns (address pair);
function allPairs(uint256) external view returns (address pair);
function allPairsLength() external view returns (uint256);
function createPair(address tokenA, address tokenB)
external
returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
// File: contracts/IERC20.sol
pragma solidity ^0.7.4;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender)
external
view
returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value) external returns (bool);
function transferFrom(
address from,
address to,
uint256 value
) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
// File: contracts/ERC20Detailed.sol
pragma solidity ^0.7.4;
abstract contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(
string memory name,
string memory symbol,
uint8 decimals
) {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
}
// File: contracts/Phenix.sol
pragma solidity ^0.7.4;
contract PhenixFinance is ERC20Detailed, Ownable {
using SafeMath for uint256;
using SafeMathInt for int256;
event Rebase(uint256 indexed totalSupply);
address[] public pairAddresses;
address public liquidityReceiver;
address public phenixFundReserveReceiver;
bool public initialDistributionFinished;
mapping(address => bool) _allowTransfer;
mapping(address => bool) _isFeeExempt;
uint256 private constant FXP_BASE = 1000000;
uint256 private constant DECIMALS = 18;
uint256 private constant MAX_UINT256 = ~uint256(0);
address private constant DEAD = 0x000000000000000000000000000000000000dEaD;
address private constant ZERO = 0x0000000000000000000000000000000000000000;
uint256 private constant REBASE_INTERVAL = 86400;
uint256 private constant INITIAL_FRAGMENTS_SUPPLY =
300 * 10**6 * 10**DECIMALS;
uint256 public liquidityFee = 2;
uint256 public phenixVaultFee = 8;
uint256 public sellFee = 15;
uint256 public totalFee = liquidityFee.add(phenixVaultFee);
uint256 public feeDenominator = 100;
uint256 public lastRebaseTimestamp = block.timestamp;
uint256 public lastRebaseDelta = 0;
uint256 public rebasePercentDelta = (18 * FXP_BASE) / 1000;
bool public rebaseRX3Enabled = true;
uint256 public rebaseRX3Multiplier = FXP_BASE;
uint256 public rebaseMaxRX3Multiplier = FXP_BASE + FXP_BASE / 2;
uint256 public rebaseRX3MultiplierStep = (1 * FXP_BASE) / 1000;
IVVSRouter public router;
bool public swapEnabled = true;
uint256 private gonSwapThreshold = (TOTAL_GONS * 10) / 10000;
bool inSwap;
uint256 private constant TOTAL_GONS =
MAX_UINT256 - (MAX_UINT256 % INITIAL_FRAGMENTS_SUPPLY);
uint256 private constant MAX_SUPPLY = ~uint128(0);
uint256 private _totalSupply;
uint256 private _gonsPerFragment;
mapping(address => uint256) private _gonBalances;
mapping(address => mapping(address => uint256)) private _allowedFragments;
mapping(address => bool) public taxableAddress;
mapping(address => bool) public authorizedRebaseAddress;
constructor() ERC20Detailed("Phenix Finance", "PHNX", uint8(DECIMALS)) {
router = IVVSRouter(0x145677FC4d9b8F19B5D56d1820c48e0443049a30);
address _pairAddress = address(
IVVSFactory(router.factory()).createPair(
router.WETH(),
address(this)
)
);
liquidityReceiver = address(msg.sender);
phenixFundReserveReceiver = address(msg.sender);
_allowedFragments[address(this)][address(router)] = uint256(-1);
_totalSupply = INITIAL_FRAGMENTS_SUPPLY;
_gonBalances[address(msg.sender)] = TOTAL_GONS;
_gonsPerFragment = TOTAL_GONS.div(_totalSupply);
_isFeeExempt[address(phenixFundReserveReceiver)] = true;
_isFeeExempt[address(this)] = true;
_isFeeExempt[address(msg.sender)] = true;
taxableAddress[_pairAddress] = true;
pairAddresses.push(_pairAddress);
authorizedRebaseAddress[address(msg.sender)] = true;
emit Transfer(address(0x0), address(msg.sender), _totalSupply);
}
/**
* @dev Swapping switch used to mitigate any calculation
* issues during swapBack.
*/
modifier noReentrancy() {
inSwap = true;
_;
inSwap = false;
}
modifier initialDistributionLock() {
require(
initialDistributionFinished ||
isOwner() ||
_allowTransfer[msg.sender],
"Initial distirbution not finalized."
);
_;
}
modifier validRecipient(address to) {
require(to != address(0x0));
_;
}
/**
* @dev Returns the delta of the next rebase.
* @return next rebase delta as uint256 value.
*/
function getNextRebase(uint256 _timestamp) public view returns (uint256) {
uint256 rebaseTimestampDelta = _timestamp - lastRebaseTimestamp;
uint256 nextScaledRebaseIntervalPercentage = rebaseTimestampDelta
.mul(FXP_BASE)
.div(REBASE_INTERVAL);
uint256 nextRebaseDelta = _totalSupply
.mul(rebasePercentDelta)
.div(FXP_BASE)
.mul(nextScaledRebaseIntervalPercentage)
.div(FXP_BASE);
if (rebaseRX3Enabled == true) {
nextRebaseDelta = nextRebaseDelta
.mul(
rebaseRX3Multiplier < rebaseMaxRX3Multiplier
? rebaseRX3Multiplier
: rebaseMaxRX3Multiplier
)
.div(FXP_BASE);
}
return nextRebaseDelta;
}
/**
* @dev Rebases total token supply based on the getNextRebase()
* return result. Rebase is capped when MAX_SUPPLY is reached.
*/
function _rebase() internal {
uint256 supplyDelta = getNextRebase(block.timestamp);
_totalSupply = _totalSupply.add(uint256(supplyDelta));
if (_totalSupply > MAX_SUPPLY) {
_totalSupply = MAX_SUPPLY;
}
_gonsPerFragment = TOTAL_GONS.div(_totalSupply);
lastRebaseDelta = supplyDelta;
lastRebaseTimestamp = block.timestamp;
rebaseRX3Multiplier = FXP_BASE;
emit Rebase(_totalSupply);
}
/**
* @dev Executes the internal _rebase() function and then
* performs the sync() call on all applicable pairAddresses
*/
function rebaseAndSync() external {
require(
authorizedRebaseAddress[msg.sender] == true,
"Not authroized to execute rebase"
);
_rebase();
for (uint256 i = 0; i < pairAddresses.length; i++) {
if (taxableAddress[pairAddresses[i]] == true) {
InterfaceLP(pairAddresses[i]).sync();
}
}
}
/**
* @dev Sets the last rebase time to the current block
* timestamp as means to reset the value.
*/
function resetLastRebaseTimestamp() external {
require(
authorizedRebaseAddress[msg.sender] == true,
"Not authroized to execute this function."
);
lastRebaseTimestamp = block.timestamp;
}
/**
* @dev Returns total token supply. Overrides ERC-20
* totalSupply() function to return elastic supply.
*/
function totalSupply() external view override returns (uint256) {
return _totalSupply;
}
/**
* @dev Transfers amount tokens to an address.
* @param to Receiver of the transfered tokens.
* @param value Amount of tokens that are received.
* @return true
*/
function transfer(address to, uint256 value)
external
override
validRecipient(to)
initialDistributionLock
returns (bool)
{
_transferFrom(msg.sender, to, value);
return true;
}
/**
* @dev Adds LP contract address and removes
* fees from the given address. Added pair contract tested
* sync() before adding to see if it is a pair address.
* Addition will fail if sync() fails.
* @param _address Update LP contract address.
*/
function addLPAddress(address _address) external onlyOwner {
InterfaceLP(_address).sync();
for (uint256 i = 0; i < pairAddresses.length; i++) {
require(pairAddresses[i] != _address, "Pair address already added");
}
pairAddresses.push(_address);
taxableAddress[_address] = true;
}
/**
* @dev Returns array of all LP Addresses
* @return address[] Array of LP Addresses.
**/
function getLPAddresses() external view returns (address[] memory) {
return pairAddresses;
}
/**
* @dev Updates given address' taxable status.
* @param _address Subject address of taxable state adjustment.
* @param _status State if address should be taxed.
*/
function setTaxableAddress(address _address, bool _status)
external
onlyOwner
{
taxableAddress[_address] = _status;
}
/**
* @dev Updates given address' Authorized Rebase status.
* @param _address Subject address of Authorized Rebase state adjustment.
* @param _status State if address should be allowed call rebaseAndSync().
*/
function setAuthorizedRebaseAddress(address _address, bool _status)
external
onlyOwner
{
authorizedRebaseAddress[_address] = _status;
}
/**
* @dev Returns spender alloance of an owner address.
* Overides ERC-20 allowance(address, address) function
* to return allowed fragments.
* @param owner Owner address of tokens.
* @param spender Spender address of tokens.
* @return uint256 Amount of allowed tokens for the spender to use.
*/
function allowance(address owner, address spender)
external
view
override
returns (uint256)
{
return _allowedFragments[owner][spender];
}
/**
* @dev Returns balance of given address. Overrides
* ERC-20 balanceOf(address) to provide balance based
* on holder gons and gonsPerFragment.
* @param who Balance of address.
* @return uint256 value of address balance.
*/
function balanceOf(address who) external view override returns (uint256) {
return _gonBalances[who].div(_gonsPerFragment);
}
/**
* @dev Performs basic token transfer. Used as
* internal function in _transferFrom(address,
* address, uint256) function.
* @param from sender address of transfer.
* @param to receiver adddress of transfer.
* @param amount amount of tokens for receiver.
* @return true.
*/
function _basicTransfer(
address from,
address to,
uint256 amount
) internal returns (bool) {
uint256 gonAmount = amount.mul(_gonsPerFragment);
_gonBalances[from] = _gonBalances[from].sub(gonAmount);
_gonBalances[to] = _gonBalances[to].add(gonAmount);
return true;
}
/**
* @dev Transfers token from sender address
* to receiver address. Performs token supply
* rebase provided it is acceptable. Executes
* _baseTransfer(address, address, uint256) if
* swap is in progress.
* @param sender sender address of transfer.
* @param to receiver adddress of transfer.
* @param amount amount of tokens for receiver.
* @return true.
*/
function _transferFrom(
address sender,
address to,
uint256 amount
) internal returns (bool) {
if (inSwap) {
return _basicTransfer(sender, to, amount);
}
uint256 gonAmount = amount.mul(_gonsPerFragment);
if (_shouldSwapBack()) {
_swapBack();
}
if (rebaseRX3Enabled == true) {
rebaseRX3Multiplier = rebaseRX3Multiplier.add(
rebaseRX3MultiplierStep
);
}
_gonBalances[sender] = _gonBalances[sender].sub(gonAmount);
uint256 gonAmountReceived = _shouldTakeFee(sender, to)
? _takeFee(sender, to, gonAmount)
: gonAmount;
_gonBalances[to] = _gonBalances[to].add(gonAmountReceived);
emit Transfer(sender, to, gonAmountReceived.div(_gonsPerFragment));
return true;
}
/**
* @dev Transfers token from sender address
* to receiver address. Overrides ERC-20
* transferFrom(address, address, uint256) to
* check value of allowed fragments that sender
* can access from the owner (from address).
* @param from sender address of transfer.
* @param to receiver adddress of transfer.
* @param value amount of tokens for receiver.
* @return true.
*/
function transferFrom(
address from,
address to,
uint256 value
) external override validRecipient(to) returns (bool) {
if (_allowedFragments[from][msg.sender] != uint256(-1)) {
_allowedFragments[from][msg.sender] = _allowedFragments[from][
msg.sender
].sub(value, "Insufficient Allowance");
}
_transferFrom(from, to, value);
return true;
}
/**
* @dev Executes fee allocations and distributes tokens
* to contract address, phenix vault receiver address, and
* liquidity receiver address.
*/
function _swapBack() internal noReentrancy {
uint256 contractTokenBalance = _gonBalances[address(this)].div(
_gonsPerFragment
);
uint256 amountToLiquify = contractTokenBalance
.mul(liquidityFee)
.div(totalFee)
.div(2);
uint256 amountToSwap = contractTokenBalance.sub(amountToLiquify);
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = router.WETH();
uint256 balanceBefore = address(this).balance;
router.swapExactTokensForETHSupportingFeeOnTransferTokens(
amountToSwap,
0,
path,
address(this),
block.timestamp
);
uint256 amountETH = address(this).balance.sub(balanceBefore);
uint256 totalETHFee = totalFee.sub(liquidityFee.div(2));
uint256 amountETHLiquidity = amountETH
.mul(liquidityFee)
.div(totalETHFee)
.div(2);
if (amountToLiquify > 0) {
router.addLiquidityETH{value: amountETHLiquidity}(
address(this),
amountToLiquify,
0,
0,
liquidityReceiver,
block.timestamp
);
}
(bool success, ) = payable(phenixFundReserveReceiver).call{
value: address(this).balance
}("");
}
/**
* @dev Calculates swap fee and returns new allocation
* of swap based on swap conditions. Calculate is based
* on liquidity fee and phenix vault fee. Sell fee will also
* be taken into consideration if receiver is pair address.
* @return uint256 gonAmount that is transfered in the swap.
*/
function _takeFee(
address sender,
address to,
uint256 gonAmount
) internal returns (uint256) {
uint256 _totalFee = totalFee;
if (taxableAddress[to] == true) _totalFee = _totalFee.add(sellFee);
uint256 feeAmount = gonAmount.mul(_totalFee).div(feeDenominator);
_gonBalances[address(this)] = _gonBalances[address(this)].add(
feeAmount
);
emit Transfer(sender, address(this), feeAmount.div(_gonsPerFragment));
return gonAmount.sub(feeAmount);
}
/**
* @dev Decreases spender allowance of sender address.
* @param spender Spender address.
* @param subtractedValue Amount to reduce spender allowance by.
* @return bool
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
external
initialDistributionLock
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(
subtractedValue
);
}
emit Approval(
msg.sender,
spender,
_allowedFragments[msg.sender][spender]
);
return true;
}
/**
* @dev Updates router address
* @param _address address to set for the dex router
*/
function updateRouter(address _address) external onlyOwner {
require(address(router) != _address, "Router address already set");
router = IVVSRouter(_address);
}
/**
* @dev Increases spender allowance of sender address.
* @param spender Spender address.
* @param addedValue Amount to increase spender allowance by.
* @return bool
*/
function increaseAllowance(address spender, uint256 addedValue)
external
initialDistributionLock
returns (bool)
{
_allowedFragments[msg.sender][spender] = _allowedFragments[msg.sender][
spender
].add(addedValue);
emit Approval(
msg.sender,
spender,
_allowedFragments[msg.sender][spender]
);
return true;
}
/**
* @dev Approves spender address to use sender tokens.
* @param spender Spender address.
* @param value Amount of tokens spender can access.
* @return bool
*/
function approve(address spender, uint256 value)
external
override
initialDistributionLock
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Checks if given address is exempt from swap fees.
* @param _addr Address to check current exemption status.
* @return bool
*/
function checkFeeExempt(address _addr) external view returns (bool) {
return _isFeeExempt[_addr];
}
/**
* @dev Unlocks tokens and sets initialDistributedFinished
* to true. Only callable from owner address.
*/
function setInitialDistributionFinished() external onlyOwner {
initialDistributionFinished = true;
}
/**
* @dev Enables transfers for a specific address.
* Only callable from owner address.
* @param _addr Address to enable transfers.
*/
function enableTransfer(address _addr) external onlyOwner {
_allowTransfer[_addr] = true;
}
/**
* @dev Sets given address to have exceptions from
* swap fees. Only callable from owner address.
* @param _addr Address to set fee exemptions.
*/
function setFeeExempt(address _addr) external onlyOwner {
_isFeeExempt[_addr] = true;
}
/**
* @dev Checks if a sender (from) and receiver
* (to) need swap fees applied in transfer. Used
* in _transferFrom(address, address, uint256) internal
* function. Should only apply when user is interacting with
* the pair (to or from)
* @param from Sender address of swap
* @param to Receiver address of swap.
* @return bool True if fees apply on transfer.
*/
function _shouldTakeFee(address from, address to)
internal
view
returns (bool)
{
return
(taxableAddress[from] || taxableAddress[to]) &&
(!_isFeeExempt[from] && !_isFeeExempt[to]);
}
/**
* @dev Updates swap back settings.
* @param _enabled bool value to determine of swap back is enabled.
* @param _num uint256 value for the swap back threshhold
* @param _denom uint256 value used for the threshold deminator
*/
function setSwapBackSettings(
bool _enabled,
uint256 _num,
uint256 _denom
) external onlyOwner {
swapEnabled = _enabled;
gonSwapThreshold = TOTAL_GONS.div(_denom).mul(_num);
}
/**
* @dev Updates RX3 Rebase settings.
* @param _enabled bool value to determine of RX3 Protocol is enabled.
* @param _rebaseMaxRX3Multiplier uint256 value for the max RX3 Multiplier
* @param _rebaseRX3MultiplierStep uint256 value used for the RX3 Multiplier Step
*/
function setRX3Settings(
bool _enabled,
uint256 _rebaseMaxRX3Multiplier,
uint256 _rebaseRX3MultiplierStep
) external onlyOwner {
rebaseRX3Enabled = _enabled;
rebaseMaxRX3Multiplier = _rebaseMaxRX3Multiplier;
rebaseRX3MultiplierStep = _rebaseRX3MultiplierStep;
}
/**
* @dev Configures Rebase settings. Sets
* RebasePercentDelta, and Accuracy.
* @param _percentage value of rebase percent delta based on a daily interval (18)
* @param _accuracy defines the value of the rebase delta percentage demoninator (1000)
*/
function setRebaseSettings(uint256 _percentage, uint256 _accuracy)
external
onlyOwner
{
rebasePercentDelta = (_percentage * FXP_BASE) / _accuracy;
}
/**
* @dev Check whether the a swap back can be performed.
* @return bool, true if swapBack is allowed to execute.
*/
function _shouldSwapBack() internal view returns (bool) {
return
taxableAddress[msg.sender] == false &&
!inSwap &&
swapEnabled &&
_gonBalances[address(this)] >= gonSwapThreshold;
}
/**
* @dev Returns current circulating token supply
* @return uint256, value of total circulating supply.
*/
function getCirculatingSupply() public view returns (uint256) {
return
(TOTAL_GONS.sub(_gonBalances[DEAD]).sub(_gonBalances[ZERO])).div(
_gonsPerFragment
);
}
function isNotInSwap() external view returns (bool) {
return !inSwap;
}
function checkSwapThreshold() external view returns (uint256) {
return gonSwapThreshold.div(_gonsPerFragment);
}
function setFeeReceivers(
address _liquidityReceiver,
address _phenixFundReserveReceiver
) external onlyOwner {
liquidityReceiver = _liquidityReceiver;
phenixFundReserveReceiver = _phenixFundReserveReceiver;
}
function setFees(
uint256 _liquidityFee,
uint256 _phenixVaultFee,
uint256 _sellFee,
uint256 _feeDenominator
) external onlyOwner {
liquidityFee = _liquidityFee;
phenixVaultFee = _phenixVaultFee;
sellFee = _sellFee;
totalFee = liquidityFee.add(phenixVaultFee);
feeDenominator = _feeDenominator;
require(totalFee < feeDenominator / 4);
}
function emergencyRecoverETH() external onlyOwner {
require(address(this).balance > 0, "No ETH to recover.");
(bool success, ) = address(msg.sender).call{
value: address(this).balance
}("");
require(success, "Failed to recover ETH.");
}
function emergencyRecoverToken(address _tokenAddress) external onlyOwner {
require(
IERC20(_tokenAddress).balanceOf(address(this)) > 0,
"No tokens to recover."
);
IERC20(_tokenAddress).transfer(
msg.sender,
IERC20(_tokenAddress).balanceOf(address(this))
);
}
receive() external payable {}
}