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int64 0
60.4k
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DexBrokerage | DexBrokerage.sol | 0x41a5b8aa081dcd69ace566061d5b6adcb92cae1c | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// require(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// require(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev a to power of b, throws on overflow.
*/
function pow(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a ** b;
require(c >= a);
return c;
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/ | NatSpecMultiLine | pow | function pow(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a ** b;
require(c >= a);
return c;
}
| /**
* @dev a to power of b, throws on overflow.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://08d43b7bceff4c3bda6099d6bfe95f6f51fadf64d77309ccc487dda94eb6b121 | {
"func_code_index": [
1127,
1265
]
} | 59,561 |
|
DexBrokerage | DexBrokerage.sol | 0x41a5b8aa081dcd69ace566061d5b6adcb92cae1c | Solidity | Ownable | contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
} | /**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/ | NatSpecMultiLine | transferOwnership | function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
| /**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/ | NatSpecMultiLine | v0.4.25+commit.59dbf8f1 | bzzr://08d43b7bceff4c3bda6099d6bfe95f6f51fadf64d77309ccc487dda94eb6b121 | {
"func_code_index": [
635,
816
]
} | 59,562 |
|
DexBrokerage | DexBrokerage.sol | 0x41a5b8aa081dcd69ace566061d5b6adcb92cae1c | Solidity | DexBrokerage | contract DexBrokerage is Ownable {
using SafeMath for uint256;
address public feeAccount;
uint256 public makerFee;
uint256 public takerFee;
uint256 public inactivityReleasePeriod;
mapping (address => bool) public approvedCurrencyTokens;
mapping (address => uint256) public invalidOrder;
mapping (address => mapping (address => uint256)) public tokens;
mapping (address => bool) public admins;
mapping (address => uint256) public lastActiveTransaction;
mapping (bytes32 => uint256) public orderFills;
mapping (bytes32 => bool) public withdrawn;
event Trade(address tokenBuy, uint256 amountBuy, address tokenSell, uint256 amountSell, address maker, address taker);
event Deposit(address token, address user, uint256 amount, uint256 balance);
event Withdraw(address token, address user, uint256 amount, uint256 balance);
event MakerFeeUpdated(uint256 oldFee, uint256 newFee);
event TakerFeeUpdated(uint256 oldFee, uint256 newFee);
modifier onlyAdmin {
require(msg.sender == owner || admins[msg.sender]);
_;
}
constructor(uint256 _makerFee, uint256 _takerFee , address _feeAccount, uint256 _inactivityReleasePeriod) public {
owner = msg.sender;
makerFee = _makerFee;
takerFee = _takerFee;
feeAccount = _feeAccount;
inactivityReleasePeriod = _inactivityReleasePeriod;
}
function approveCurrencyTokenAddress(address currencyTokenAddress, bool isApproved) onlyAdmin public {
approvedCurrencyTokens[currencyTokenAddress] = isApproved;
}
function invalidateOrdersBefore(address user, uint256 nonce) onlyAdmin public {
require(nonce >= invalidOrder[user]);
invalidOrder[user] = nonce;
}
function setMakerFee(uint256 _makerFee) onlyAdmin public {
//market maker fee will never be more than 1%
uint256 oldFee = makerFee;
if (_makerFee > 10 finney) {
_makerFee = 10 finney;
}
require(makerFee != _makerFee);
makerFee = _makerFee;
emit MakerFeeUpdated(oldFee, makerFee);
}
function setTakerFee(uint256 _takerFee) onlyAdmin public {
//market taker fee will never be more than 2%
uint256 oldFee = takerFee;
if (_takerFee > 20 finney) {
_takerFee = 20 finney;
}
require(takerFee != _takerFee);
takerFee = _takerFee;
emit TakerFeeUpdated(oldFee, takerFee);
}
function setInactivityReleasePeriod(uint256 expire) onlyAdmin public returns (bool) {
require(expire <= 50000);
inactivityReleasePeriod = expire;
return true;
}
function setAdmin(address admin, bool isAdmin) onlyOwner public {
admins[admin] = isAdmin;
}
function depositToken(address token, uint256 amount) public {
receiveTokenDeposit(token, msg.sender, amount);
}
function receiveTokenDeposit(address token, address from, uint256 amount) public {
tokens[token][from] = tokens[token][from].add(amount);
lastActiveTransaction[from] = block.number;
require(ERC20(token).transferFrom(from, address(this), amount));
emit Deposit(token, from, amount, tokens[token][from]);
}
function deposit() payable public {
tokens[address(0)][msg.sender] = tokens[address(0)][msg.sender].add(msg.value);
lastActiveTransaction[msg.sender] = block.number;
emit Deposit(address(0), msg.sender, msg.value, tokens[address(0)][msg.sender]);
}
function withdraw(address token, uint256 amount) public returns (bool) {
require(block.number.sub(lastActiveTransaction[msg.sender]) >= inactivityReleasePeriod);
require(tokens[token][msg.sender] >= amount);
tokens[token][msg.sender] = tokens[token][msg.sender].sub(amount);
if (token == address(0)) {
msg.sender.transfer(amount);
} else {
require(ERC20(token).transfer(msg.sender, amount));
}
emit Withdraw(token, msg.sender, amount, tokens[token][msg.sender]);
return true;
}
function adminWithdraw(address token, uint256 amount, address user, uint256 nonce, uint8 v, bytes32 r, bytes32 s, uint256 gasCost) onlyAdmin public returns (bool) {
//gasCost will never be more than 30 finney
if (gasCost > 30 finney) gasCost = 30 finney;
if(token == address(0)){
require(tokens[address(0)][user] >= gasCost.add(amount));
} else {
require(tokens[address(0)][user] >= gasCost);
require(tokens[token][user] >= amount);
}
bytes32 hash = keccak256(address(this), token, amount, user, nonce);
require(!withdrawn[hash]);
withdrawn[hash] = true;
require(ecrecover(keccak256("\x19Ethereum Signed Message:\n32", hash), v, r, s) == user);
if(token == address(0)){
tokens[address(0)][user] = tokens[address(0)][user].sub(gasCost.add(amount));
tokens[address(0)][feeAccount] = tokens[address(0)][feeAccount].add(gasCost);
user.transfer(amount);
} else {
tokens[token][user] = tokens[token][user].sub(amount);
tokens[address(0)][user] = tokens[address(0)][user].sub(gasCost);
tokens[address(0)][feeAccount] = tokens[address(0)][feeAccount].add(gasCost);
require(ERC20(token).transfer(user, amount));
}
lastActiveTransaction[user] = block.number;
emit Withdraw(token, user, amount, tokens[token][user]);
return true;
}
function balanceOf(address token, address user) view public returns (uint256) {
return tokens[token][user];
}
/* tradeValues
[0] amountBuy
[1] amountSell
[2] makerNonce
[3] takerAmountBuy
[4] takerAmountSell
[5] takerExpires
[6] takerNonce
[7] makerAmountBuy
[8] makerAmountSell
[9] makerExpires
[10] gasCost
tradeAddressses
[0] tokenBuy
[1] tokenSell
[2] maker
[3] taker
*/
function trade(uint256[11] tradeValues, address[4] tradeAddresses, uint8[2] v, bytes32[4] rs) onlyAdmin public returns (bool) {
uint256 price = tradeValues[0].mul(1 ether).div(tradeValues[1]);
require(price >= tradeValues[7].mul(1 ether).div(tradeValues[8]).sub(100000 wei));
require(price <= tradeValues[4].mul(1 ether).div(tradeValues[3]).add(100000 wei));
require(block.number < tradeValues[9]);
require(block.number < tradeValues[5]);
require(invalidOrder[tradeAddresses[2]] <= tradeValues[2]);
require(invalidOrder[tradeAddresses[3]] <= tradeValues[6]);
bytes32 orderHash = keccak256(address(this), tradeAddresses[0], tradeValues[7], tradeAddresses[1], tradeValues[8], tradeValues[9], tradeValues[2], tradeAddresses[2]);
bytes32 tradeHash = keccak256(address(this), tradeAddresses[1], tradeValues[3], tradeAddresses[0], tradeValues[4], tradeValues[5], tradeValues[6], tradeAddresses[3]);
require(ecrecover(keccak256("\x19Ethereum Signed Message:\n32", orderHash), v[0], rs[0], rs[1]) == tradeAddresses[2]);
require(ecrecover(keccak256("\x19Ethereum Signed Message:\n32", tradeHash), v[1], rs[2], rs[3]) == tradeAddresses[3]);
require(tokens[tradeAddresses[0]][tradeAddresses[3]] >= tradeValues[0]);
require(tokens[tradeAddresses[1]][tradeAddresses[2]] >= tradeValues[1]);
if ((tradeAddresses[0] == address(0) || tradeAddresses[1] == address(0)) && tradeValues[10] > 30 finney) tradeValues[10] = 30 finney;
if ((approvedCurrencyTokens[tradeAddresses[0]] == true || approvedCurrencyTokens[tradeAddresses[1]] == true) && tradeValues[10] > 10 ether) tradeValues[10] = 10 ether;
if(tradeAddresses[0] == address(0) || approvedCurrencyTokens[tradeAddresses[0]] == true){
require(orderFills[orderHash].add(tradeValues[1]) <= tradeValues[8]);
require(orderFills[tradeHash].add(tradeValues[1]) <= tradeValues[3]);
//tradeAddresses[0] is ether
uint256 valueInTokens = tradeValues[1];
//move tokens
tokens[tradeAddresses[1]][tradeAddresses[2]] = tokens[tradeAddresses[1]][tradeAddresses[2]].sub(valueInTokens);
tokens[tradeAddresses[1]][tradeAddresses[3]] = tokens[tradeAddresses[1]][tradeAddresses[3]].add(valueInTokens);
//from taker, take ether payment, fee and gasCost
tokens[tradeAddresses[0]][tradeAddresses[3]] = tokens[tradeAddresses[0]][tradeAddresses[3]].sub(tradeValues[0]);
tokens[tradeAddresses[0]][tradeAddresses[3]] = tokens[tradeAddresses[0]][tradeAddresses[3]].sub(takerFee.mul(tradeValues[0]).div(1 ether));
tokens[tradeAddresses[0]][tradeAddresses[3]] = tokens[tradeAddresses[0]][tradeAddresses[3]].sub(tradeValues[10]);
//to maker add ether payment, take fee
tokens[tradeAddresses[0]][tradeAddresses[2]] = tokens[tradeAddresses[0]][tradeAddresses[2]].add(tradeValues[0]);
tokens[tradeAddresses[0]][tradeAddresses[2]] = tokens[tradeAddresses[0]][tradeAddresses[2]].sub(makerFee.mul(tradeValues[0]).div(1 ether));
// take maker fee, taker fee and gasCost
tokens[tradeAddresses[0]][feeAccount] = tokens[tradeAddresses[0]][feeAccount].add(makerFee.mul(tradeValues[0]).div(1 ether));
tokens[tradeAddresses[0]][feeAccount] = tokens[tradeAddresses[0]][feeAccount].add(takerFee.mul(tradeValues[0]).div(1 ether));
tokens[tradeAddresses[0]][feeAccount] = tokens[tradeAddresses[0]][feeAccount].add(tradeValues[10]);
orderFills[orderHash] = orderFills[orderHash].add(tradeValues[1]);
orderFills[tradeHash] = orderFills[tradeHash].add(tradeValues[1]);
} else {
require(orderFills[orderHash].add(tradeValues[0]) <= tradeValues[7]);
require(orderFills[tradeHash].add(tradeValues[0]) <= tradeValues[4]);
//tradeAddresses[0] is token
uint256 valueInEth = tradeValues[1];
//move tokens //changed tradeValues to 0
tokens[tradeAddresses[0]][tradeAddresses[3]] = tokens[tradeAddresses[0]][tradeAddresses[3]].sub(tradeValues[0]);
tokens[tradeAddresses[0]][tradeAddresses[2]] = tokens[tradeAddresses[0]][tradeAddresses[2]].add(tradeValues[0]);
//from maker, take ether payment and fee
tokens[tradeAddresses[1]][tradeAddresses[2]] = tokens[tradeAddresses[1]][tradeAddresses[2]].sub(valueInEth);
tokens[tradeAddresses[1]][tradeAddresses[2]] = tokens[tradeAddresses[1]][tradeAddresses[2]].sub(makerFee.mul(valueInEth).div(1 ether));
//add ether payment to taker, take fee, take gasCost
tokens[tradeAddresses[1]][tradeAddresses[3]] = tokens[tradeAddresses[1]][tradeAddresses[3]].add(valueInEth);
tokens[tradeAddresses[1]][tradeAddresses[3]] = tokens[tradeAddresses[1]][tradeAddresses[3]].sub(takerFee.mul(valueInEth).div(1 ether));
tokens[tradeAddresses[1]][tradeAddresses[3]] = tokens[tradeAddresses[1]][tradeAddresses[3]].sub(tradeValues[10]);
//take maker fee, taker fee and gasCost
tokens[tradeAddresses[1]][feeAccount] = tokens[tradeAddresses[1]][feeAccount].add(makerFee.mul(valueInEth).div(1 ether));
tokens[tradeAddresses[1]][feeAccount] = tokens[tradeAddresses[1]][feeAccount].add(takerFee.mul(valueInEth).div(1 ether));
tokens[tradeAddresses[1]][feeAccount] = tokens[tradeAddresses[1]][feeAccount].add(tradeValues[10]);
orderFills[orderHash] = orderFills[orderHash].add(tradeValues[0]);
orderFills[tradeHash] = orderFills[tradeHash].add(tradeValues[0]);
}
lastActiveTransaction[tradeAddresses[2]] = block.number;
lastActiveTransaction[tradeAddresses[3]] = block.number;
emit Trade(tradeAddresses[0], tradeValues[0], tradeAddresses[1], tradeValues[1], tradeAddresses[2], tradeAddresses[3]);
return true;
}
} | trade | function trade(uint256[11] tradeValues, address[4] tradeAddresses, uint8[2] v, bytes32[4] rs) onlyAdmin public returns (bool) {
uint256 price = tradeValues[0].mul(1 ether).div(tradeValues[1]);
require(price >= tradeValues[7].mul(1 ether).div(tradeValues[8]).sub(100000 wei));
require(price <= tradeValues[4].mul(1 ether).div(tradeValues[3]).add(100000 wei));
require(block.number < tradeValues[9]);
require(block.number < tradeValues[5]);
require(invalidOrder[tradeAddresses[2]] <= tradeValues[2]);
require(invalidOrder[tradeAddresses[3]] <= tradeValues[6]);
bytes32 orderHash = keccak256(address(this), tradeAddresses[0], tradeValues[7], tradeAddresses[1], tradeValues[8], tradeValues[9], tradeValues[2], tradeAddresses[2]);
bytes32 tradeHash = keccak256(address(this), tradeAddresses[1], tradeValues[3], tradeAddresses[0], tradeValues[4], tradeValues[5], tradeValues[6], tradeAddresses[3]);
require(ecrecover(keccak256("\x19Ethereum Signed Message:\n32", orderHash), v[0], rs[0], rs[1]) == tradeAddresses[2]);
require(ecrecover(keccak256("\x19Ethereum Signed Message:\n32", tradeHash), v[1], rs[2], rs[3]) == tradeAddresses[3]);
require(tokens[tradeAddresses[0]][tradeAddresses[3]] >= tradeValues[0]);
require(tokens[tradeAddresses[1]][tradeAddresses[2]] >= tradeValues[1]);
if ((tradeAddresses[0] == address(0) || tradeAddresses[1] == address(0)) && tradeValues[10] > 30 finney) tradeValues[10] = 30 finney;
if ((approvedCurrencyTokens[tradeAddresses[0]] == true || approvedCurrencyTokens[tradeAddresses[1]] == true) && tradeValues[10] > 10 ether) tradeValues[10] = 10 ether;
if(tradeAddresses[0] == address(0) || approvedCurrencyTokens[tradeAddresses[0]] == true){
require(orderFills[orderHash].add(tradeValues[1]) <= tradeValues[8]);
require(orderFills[tradeHash].add(tradeValues[1]) <= tradeValues[3]);
//tradeAddresses[0] is ether
uint256 valueInTokens = tradeValues[1];
//move tokens
tokens[tradeAddresses[1]][tradeAddresses[2]] = tokens[tradeAddresses[1]][tradeAddresses[2]].sub(valueInTokens);
tokens[tradeAddresses[1]][tradeAddresses[3]] = tokens[tradeAddresses[1]][tradeAddresses[3]].add(valueInTokens);
//from taker, take ether payment, fee and gasCost
tokens[tradeAddresses[0]][tradeAddresses[3]] = tokens[tradeAddresses[0]][tradeAddresses[3]].sub(tradeValues[0]);
tokens[tradeAddresses[0]][tradeAddresses[3]] = tokens[tradeAddresses[0]][tradeAddresses[3]].sub(takerFee.mul(tradeValues[0]).div(1 ether));
tokens[tradeAddresses[0]][tradeAddresses[3]] = tokens[tradeAddresses[0]][tradeAddresses[3]].sub(tradeValues[10]);
//to maker add ether payment, take fee
tokens[tradeAddresses[0]][tradeAddresses[2]] = tokens[tradeAddresses[0]][tradeAddresses[2]].add(tradeValues[0]);
tokens[tradeAddresses[0]][tradeAddresses[2]] = tokens[tradeAddresses[0]][tradeAddresses[2]].sub(makerFee.mul(tradeValues[0]).div(1 ether));
// take maker fee, taker fee and gasCost
tokens[tradeAddresses[0]][feeAccount] = tokens[tradeAddresses[0]][feeAccount].add(makerFee.mul(tradeValues[0]).div(1 ether));
tokens[tradeAddresses[0]][feeAccount] = tokens[tradeAddresses[0]][feeAccount].add(takerFee.mul(tradeValues[0]).div(1 ether));
tokens[tradeAddresses[0]][feeAccount] = tokens[tradeAddresses[0]][feeAccount].add(tradeValues[10]);
orderFills[orderHash] = orderFills[orderHash].add(tradeValues[1]);
orderFills[tradeHash] = orderFills[tradeHash].add(tradeValues[1]);
} else {
require(orderFills[orderHash].add(tradeValues[0]) <= tradeValues[7]);
require(orderFills[tradeHash].add(tradeValues[0]) <= tradeValues[4]);
//tradeAddresses[0] is token
uint256 valueInEth = tradeValues[1];
//move tokens //changed tradeValues to 0
tokens[tradeAddresses[0]][tradeAddresses[3]] = tokens[tradeAddresses[0]][tradeAddresses[3]].sub(tradeValues[0]);
tokens[tradeAddresses[0]][tradeAddresses[2]] = tokens[tradeAddresses[0]][tradeAddresses[2]].add(tradeValues[0]);
//from maker, take ether payment and fee
tokens[tradeAddresses[1]][tradeAddresses[2]] = tokens[tradeAddresses[1]][tradeAddresses[2]].sub(valueInEth);
tokens[tradeAddresses[1]][tradeAddresses[2]] = tokens[tradeAddresses[1]][tradeAddresses[2]].sub(makerFee.mul(valueInEth).div(1 ether));
//add ether payment to taker, take fee, take gasCost
tokens[tradeAddresses[1]][tradeAddresses[3]] = tokens[tradeAddresses[1]][tradeAddresses[3]].add(valueInEth);
tokens[tradeAddresses[1]][tradeAddresses[3]] = tokens[tradeAddresses[1]][tradeAddresses[3]].sub(takerFee.mul(valueInEth).div(1 ether));
tokens[tradeAddresses[1]][tradeAddresses[3]] = tokens[tradeAddresses[1]][tradeAddresses[3]].sub(tradeValues[10]);
//take maker fee, taker fee and gasCost
tokens[tradeAddresses[1]][feeAccount] = tokens[tradeAddresses[1]][feeAccount].add(makerFee.mul(valueInEth).div(1 ether));
tokens[tradeAddresses[1]][feeAccount] = tokens[tradeAddresses[1]][feeAccount].add(takerFee.mul(valueInEth).div(1 ether));
tokens[tradeAddresses[1]][feeAccount] = tokens[tradeAddresses[1]][feeAccount].add(tradeValues[10]);
orderFills[orderHash] = orderFills[orderHash].add(tradeValues[0]);
orderFills[tradeHash] = orderFills[tradeHash].add(tradeValues[0]);
}
lastActiveTransaction[tradeAddresses[2]] = block.number;
lastActiveTransaction[tradeAddresses[3]] = block.number;
emit Trade(tradeAddresses[0], tradeValues[0], tradeAddresses[1], tradeValues[1], tradeAddresses[2], tradeAddresses[3]);
return true;
}
| /* tradeValues
[0] amountBuy
[1] amountSell
[2] makerNonce
[3] takerAmountBuy
[4] takerAmountSell
[5] takerExpires
[6] takerNonce
[7] makerAmountBuy
[8] makerAmountSell
[9] makerExpires
[10] gasCost
tradeAddressses
[0] tokenBuy
[1] tokenSell
[2] maker
[3] taker
*/ | Comment | v0.4.25+commit.59dbf8f1 | bzzr://08d43b7bceff4c3bda6099d6bfe95f6f51fadf64d77309ccc487dda94eb6b121 | {
"func_code_index": [
5850,
11582
]
} | 59,563 |
|||
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
**/
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
if (a == 0) {
return 0;
}
c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
**/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
// uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return a / b;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
**/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
**/
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
c = a + b;
assert(c >= a);
return c;
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/ | NatSpecMultiLine | mul | function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
if (a == 0) {
return 0;
}
c = a * b;
assert(c / a == b);
return c;
}
| /**
* @dev Multiplies two numbers, throws on overflow.
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
96,
303
]
} | 59,564 |
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
**/
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
if (a == 0) {
return 0;
}
c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
**/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
// uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return a / b;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
**/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
**/
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
c = a + b;
assert(c >= a);
return c;
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/ | NatSpecMultiLine | div | function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
// uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return a / b;
}
| /**
* @dev Integer division of two numbers, truncating the quotient.
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
400,
700
]
} | 59,565 |
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
**/
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
if (a == 0) {
return 0;
}
c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
**/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
// uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return a / b;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
**/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
**/
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
c = a + b;
assert(c >= a);
return c;
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/ | NatSpecMultiLine | sub | function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
| /**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
827,
955
]
} | 59,566 |
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | SafeMath | library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
**/
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
if (a == 0) {
return 0;
}
c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
**/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
// uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return a / b;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
**/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
**/
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
c = a + b;
assert(c >= a);
return c;
}
} | /**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/ | NatSpecMultiLine | add | function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
c = a + b;
assert(c >= a);
return c;
}
| /**
* @dev Adds two numbers, throws on overflow.
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
1032,
1178
]
} | 59,567 |
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | Ownable | contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender account.
**/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
**/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
**/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
} | /**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
**/ | NatSpecMultiLine | transferOwnership | function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
| /**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
665,
856
]
} | 59,568 |
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | BasicToken | contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
/**
* @dev total number of tokens in existence
**/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
**/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
**/
function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner];
}
} | /**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
**/ | NatSpecMultiLine | totalSupply | function totalSupply() public view returns (uint256) {
return totalSupply_;
}
| /**
* @dev total number of tokens in existence
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
214,
310
]
} | 59,569 |
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | BasicToken | contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
/**
* @dev total number of tokens in existence
**/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
**/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
**/
function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner];
}
} | /**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
**/ | NatSpecMultiLine | transfer | function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
| /**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
487,
855
]
} | 59,570 |
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | BasicToken | contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
/**
* @dev total number of tokens in existence
**/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
**/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
**/
function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner];
}
} | /**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
**/ | NatSpecMultiLine | balanceOf | function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner];
}
| /**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
1080,
1192
]
} | 59,571 |
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | StandardToken | contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
**/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* 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
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
**/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
**/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
**/
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
**/
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
} | transferFrom | function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
| /**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
410,
917
]
} | 59,572 |
||
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | StandardToken | contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
**/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* 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
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
**/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
**/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
**/
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
**/
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
} | approve | function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
| /**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* 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
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
1574,
1785
]
} | 59,573 |
||
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | StandardToken | contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
**/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* 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
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
**/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
**/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
**/
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
**/
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
} | allowance | function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
| /**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
2126,
2265
]
} | 59,574 |
||
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | StandardToken | contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
**/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* 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
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
**/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
**/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
**/
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
**/
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
} | increaseApproval | function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
| /**
* @dev Increase the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
2756,
3041
]
} | 59,575 |
||
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | StandardToken | contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
**/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
*
* 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
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
**/
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
**/
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
**/
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
**/
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
} | decreaseApproval | function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
| /**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
*
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
3537,
3992
]
} | 59,576 |
||
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | CrowdsaleToken | contract CrowdsaleToken is StandardToken, Configurable, Ownable {
/**
* @dev enum of current crowd sale state
**/
enum Stages {
none,
icoStart,
icoEnd
}
Stages currentStage;
/**
* @dev constructor of CrowdsaleToken
**/
constructor() public {
currentStage = Stages.none;
balances[owner] = balances[owner].add(tokenReserve);
totalSupply_ = totalSupply_.add(tokenReserve);
remainingTokens = cap;
emit Transfer(address(this), owner, tokenReserve);
}
/**
* @dev fallback function to send ether to for Crowd sale
**/
function () public payable {
require(currentStage == Stages.icoStart);
require(msg.value > 0);
require(remainingTokens > 0);
uint256 weiAmount = msg.value; // Calculate tokens to sell
uint256 tokens = weiAmount.mul(basePrice).div(1 ether);
uint256 returnWei = 0;
if(tokensSold.add(tokens) > cap){
uint256 newTokens = cap.sub(tokensSold);
uint256 newWei = newTokens.div(basePrice).mul(1 ether);
returnWei = weiAmount.sub(newWei);
weiAmount = newWei;
tokens = newTokens;
}
tokensSold = tokensSold.add(tokens); // Increment raised amount
remainingTokens = cap.sub(tokensSold);
if(returnWei > 0){
msg.sender.transfer(returnWei);
emit Transfer(address(this), msg.sender, returnWei);
}
balances[msg.sender] = balances[msg.sender].add(tokens);
emit Transfer(address(this), msg.sender, tokens);
totalSupply_ = totalSupply_.add(tokens);
owner.transfer(weiAmount);// Send money to owner
}
/**
* @dev startIco starts the public ICO
**/
function startIco() public onlyOwner {
require(currentStage != Stages.icoEnd);
currentStage = Stages.icoStart;
}
/**
* @dev endIco closes down the ICO
**/
function endIco() internal {
currentStage = Stages.icoEnd;
// Transfer any remaining tokens
if(remainingTokens > 0)
balances[owner] = balances[owner].add(remainingTokens);
// transfer any remaining ETH balance in the contract to the owner
owner.transfer(address(this).balance);
}
/**
* @dev finalizeIco closes down the ICO and sets needed varriables
**/
function finalizeIco() public onlyOwner {
require(currentStage != Stages.icoEnd);
endIco();
}
} | /**
* @title CrowdsaleToken
* @dev Contract to preform crowd sale with token
**/ | NatSpecMultiLine | function () public payable {
require(currentStage == Stages.icoStart);
require(msg.value > 0);
require(remainingTokens > 0);
uint256 weiAmount = msg.value; // Calculate tokens to sell
uint256 tokens = weiAmount.mul(basePrice).div(1 ether);
uint256 returnWei = 0;
if(tokensSold.add(tokens) > cap){
uint256 newTokens = cap.sub(tokensSold);
uint256 newWei = newTokens.div(basePrice).mul(1 ether);
returnWei = weiAmount.sub(newWei);
weiAmount = newWei;
tokens = newTokens;
}
tokensSold = tokensSold.add(tokens); // Increment raised amount
remainingTokens = cap.sub(tokensSold);
if(returnWei > 0){
msg.sender.transfer(returnWei);
emit Transfer(address(this), msg.sender, returnWei);
}
balances[msg.sender] = balances[msg.sender].add(tokens);
emit Transfer(address(this), msg.sender, tokens);
totalSupply_ = totalSupply_.add(tokens);
owner.transfer(weiAmount);// Send money to owner
}
| /**
* @dev fallback function to send ether to for Crowd sale
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
678,
1851
]
} | 59,577 |
|
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | CrowdsaleToken | contract CrowdsaleToken is StandardToken, Configurable, Ownable {
/**
* @dev enum of current crowd sale state
**/
enum Stages {
none,
icoStart,
icoEnd
}
Stages currentStage;
/**
* @dev constructor of CrowdsaleToken
**/
constructor() public {
currentStage = Stages.none;
balances[owner] = balances[owner].add(tokenReserve);
totalSupply_ = totalSupply_.add(tokenReserve);
remainingTokens = cap;
emit Transfer(address(this), owner, tokenReserve);
}
/**
* @dev fallback function to send ether to for Crowd sale
**/
function () public payable {
require(currentStage == Stages.icoStart);
require(msg.value > 0);
require(remainingTokens > 0);
uint256 weiAmount = msg.value; // Calculate tokens to sell
uint256 tokens = weiAmount.mul(basePrice).div(1 ether);
uint256 returnWei = 0;
if(tokensSold.add(tokens) > cap){
uint256 newTokens = cap.sub(tokensSold);
uint256 newWei = newTokens.div(basePrice).mul(1 ether);
returnWei = weiAmount.sub(newWei);
weiAmount = newWei;
tokens = newTokens;
}
tokensSold = tokensSold.add(tokens); // Increment raised amount
remainingTokens = cap.sub(tokensSold);
if(returnWei > 0){
msg.sender.transfer(returnWei);
emit Transfer(address(this), msg.sender, returnWei);
}
balances[msg.sender] = balances[msg.sender].add(tokens);
emit Transfer(address(this), msg.sender, tokens);
totalSupply_ = totalSupply_.add(tokens);
owner.transfer(weiAmount);// Send money to owner
}
/**
* @dev startIco starts the public ICO
**/
function startIco() public onlyOwner {
require(currentStage != Stages.icoEnd);
currentStage = Stages.icoStart;
}
/**
* @dev endIco closes down the ICO
**/
function endIco() internal {
currentStage = Stages.icoEnd;
// Transfer any remaining tokens
if(remainingTokens > 0)
balances[owner] = balances[owner].add(remainingTokens);
// transfer any remaining ETH balance in the contract to the owner
owner.transfer(address(this).balance);
}
/**
* @dev finalizeIco closes down the ICO and sets needed varriables
**/
function finalizeIco() public onlyOwner {
require(currentStage != Stages.icoEnd);
endIco();
}
} | /**
* @title CrowdsaleToken
* @dev Contract to preform crowd sale with token
**/ | NatSpecMultiLine | startIco | function startIco() public onlyOwner {
require(currentStage != Stages.icoEnd);
currentStage = Stages.icoStart;
}
| /**
* @dev startIco starts the public ICO
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
1911,
2051
]
} | 59,578 |
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | CrowdsaleToken | contract CrowdsaleToken is StandardToken, Configurable, Ownable {
/**
* @dev enum of current crowd sale state
**/
enum Stages {
none,
icoStart,
icoEnd
}
Stages currentStage;
/**
* @dev constructor of CrowdsaleToken
**/
constructor() public {
currentStage = Stages.none;
balances[owner] = balances[owner].add(tokenReserve);
totalSupply_ = totalSupply_.add(tokenReserve);
remainingTokens = cap;
emit Transfer(address(this), owner, tokenReserve);
}
/**
* @dev fallback function to send ether to for Crowd sale
**/
function () public payable {
require(currentStage == Stages.icoStart);
require(msg.value > 0);
require(remainingTokens > 0);
uint256 weiAmount = msg.value; // Calculate tokens to sell
uint256 tokens = weiAmount.mul(basePrice).div(1 ether);
uint256 returnWei = 0;
if(tokensSold.add(tokens) > cap){
uint256 newTokens = cap.sub(tokensSold);
uint256 newWei = newTokens.div(basePrice).mul(1 ether);
returnWei = weiAmount.sub(newWei);
weiAmount = newWei;
tokens = newTokens;
}
tokensSold = tokensSold.add(tokens); // Increment raised amount
remainingTokens = cap.sub(tokensSold);
if(returnWei > 0){
msg.sender.transfer(returnWei);
emit Transfer(address(this), msg.sender, returnWei);
}
balances[msg.sender] = balances[msg.sender].add(tokens);
emit Transfer(address(this), msg.sender, tokens);
totalSupply_ = totalSupply_.add(tokens);
owner.transfer(weiAmount);// Send money to owner
}
/**
* @dev startIco starts the public ICO
**/
function startIco() public onlyOwner {
require(currentStage != Stages.icoEnd);
currentStage = Stages.icoStart;
}
/**
* @dev endIco closes down the ICO
**/
function endIco() internal {
currentStage = Stages.icoEnd;
// Transfer any remaining tokens
if(remainingTokens > 0)
balances[owner] = balances[owner].add(remainingTokens);
// transfer any remaining ETH balance in the contract to the owner
owner.transfer(address(this).balance);
}
/**
* @dev finalizeIco closes down the ICO and sets needed varriables
**/
function finalizeIco() public onlyOwner {
require(currentStage != Stages.icoEnd);
endIco();
}
} | /**
* @title CrowdsaleToken
* @dev Contract to preform crowd sale with token
**/ | NatSpecMultiLine | endIco | function endIco() internal {
currentStage = Stages.icoEnd;
// Transfer any remaining tokens
if(remainingTokens > 0)
balances[owner] = balances[owner].add(remainingTokens);
// transfer any remaining ETH balance in the contract to the owner
owner.transfer(address(this).balance);
}
| /**
* @dev endIco closes down the ICO
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
2108,
2456
]
} | 59,579 |
UniBlueFinance | UniBlueFinance.sol | 0xfa72c4d6dbaff668b7905cd4076efd8062c81066 | Solidity | CrowdsaleToken | contract CrowdsaleToken is StandardToken, Configurable, Ownable {
/**
* @dev enum of current crowd sale state
**/
enum Stages {
none,
icoStart,
icoEnd
}
Stages currentStage;
/**
* @dev constructor of CrowdsaleToken
**/
constructor() public {
currentStage = Stages.none;
balances[owner] = balances[owner].add(tokenReserve);
totalSupply_ = totalSupply_.add(tokenReserve);
remainingTokens = cap;
emit Transfer(address(this), owner, tokenReserve);
}
/**
* @dev fallback function to send ether to for Crowd sale
**/
function () public payable {
require(currentStage == Stages.icoStart);
require(msg.value > 0);
require(remainingTokens > 0);
uint256 weiAmount = msg.value; // Calculate tokens to sell
uint256 tokens = weiAmount.mul(basePrice).div(1 ether);
uint256 returnWei = 0;
if(tokensSold.add(tokens) > cap){
uint256 newTokens = cap.sub(tokensSold);
uint256 newWei = newTokens.div(basePrice).mul(1 ether);
returnWei = weiAmount.sub(newWei);
weiAmount = newWei;
tokens = newTokens;
}
tokensSold = tokensSold.add(tokens); // Increment raised amount
remainingTokens = cap.sub(tokensSold);
if(returnWei > 0){
msg.sender.transfer(returnWei);
emit Transfer(address(this), msg.sender, returnWei);
}
balances[msg.sender] = balances[msg.sender].add(tokens);
emit Transfer(address(this), msg.sender, tokens);
totalSupply_ = totalSupply_.add(tokens);
owner.transfer(weiAmount);// Send money to owner
}
/**
* @dev startIco starts the public ICO
**/
function startIco() public onlyOwner {
require(currentStage != Stages.icoEnd);
currentStage = Stages.icoStart;
}
/**
* @dev endIco closes down the ICO
**/
function endIco() internal {
currentStage = Stages.icoEnd;
// Transfer any remaining tokens
if(remainingTokens > 0)
balances[owner] = balances[owner].add(remainingTokens);
// transfer any remaining ETH balance in the contract to the owner
owner.transfer(address(this).balance);
}
/**
* @dev finalizeIco closes down the ICO and sets needed varriables
**/
function finalizeIco() public onlyOwner {
require(currentStage != Stages.icoEnd);
endIco();
}
} | /**
* @title CrowdsaleToken
* @dev Contract to preform crowd sale with token
**/ | NatSpecMultiLine | finalizeIco | function finalizeIco() public onlyOwner {
require(currentStage != Stages.icoEnd);
endIco();
}
| /**
* @dev finalizeIco closes down the ICO and sets needed varriables
**/ | NatSpecMultiLine | v0.4.23+commit.124ca40d | MIT | bzzr://dd83d5462f253f5f6aca7764840442bc7ef046242505fa42b84d4e4bf6258aae | {
"func_code_index": [
2544,
2665
]
} | 59,580 |
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | Ownable | contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
} | /**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/ | NatSpecMultiLine | Ownable | function Ownable() {
owner = msg.sender;
}
| /**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
253,
306
]
} | 59,581 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | Ownable | contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
function Ownable() {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
} | /**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/ | NatSpecMultiLine | transferOwnership | function transferOwnership(address newOwner) onlyOwner {
require(newOwner != address(0));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
| /**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
621,
796
]
} | 59,582 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | Haltable | contract Haltable is Ownable {
bool public halted;
modifier stopInEmergency {
require(!halted);
_;
}
modifier stopNonOwnersInEmergency {
require(!halted && msg.sender == owner);
_;
}
modifier onlyInEmergency {
require(halted);
_;
}
// called by the owner on emergency, triggers stopped state
function halt() external onlyOwner {
halted = true;
}
// called by the owner on end of emergency, returns to normal state
function unhalt() external onlyOwner onlyInEmergency {
halted = false;
}
} | /*
* Haltable
* emergency stop mechanism. Differs from Pausable by causing a throw when in halt mode.
* Originally envisioned in FirstBlood ICO contract.
*/ | Comment | halt | function halt() external onlyOwner {
halted = true;
}
| // called by the owner on emergency, triggers stopped state | LineComment | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
347,
411
]
} | 59,583 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | Haltable | contract Haltable is Ownable {
bool public halted;
modifier stopInEmergency {
require(!halted);
_;
}
modifier stopNonOwnersInEmergency {
require(!halted && msg.sender == owner);
_;
}
modifier onlyInEmergency {
require(halted);
_;
}
// called by the owner on emergency, triggers stopped state
function halt() external onlyOwner {
halted = true;
}
// called by the owner on end of emergency, returns to normal state
function unhalt() external onlyOwner onlyInEmergency {
halted = false;
}
} | /*
* Haltable
* emergency stop mechanism. Differs from Pausable by causing a throw when in halt mode.
* Originally envisioned in FirstBlood ICO contract.
*/ | Comment | unhalt | function unhalt() external onlyOwner onlyInEmergency {
halted = false;
}
| // called by the owner on end of emergency, returns to normal state | LineComment | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
483,
566
]
} | 59,584 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | BasicToken | contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) returns (bool) {
require(_to != address(0));
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) constant returns (uint256 balance) {
return balances[_owner];
}
} | /**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/ | NatSpecMultiLine | transfer | function transfer(address _to, uint256 _value) returns (bool) {
require(_to != address(0));
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
| /**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
264,
600
]
} | 59,585 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | BasicToken | contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) returns (bool) {
require(_to != address(0));
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) constant returns (uint256 balance) {
return balances[_owner];
}
} | /**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/ | NatSpecMultiLine | balanceOf | function balanceOf(address _owner) constant returns (uint256 balance) {
return balances[_owner];
}
| /**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
805,
914
]
} | 59,586 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | StandardToken | contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) returns (bool) {
require(_to != address(0));
var _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
// require (_value <= _allowance);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) returns (bool) {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
require((_value == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
/**
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
*/
function increaseApproval (address _spender, uint _addedValue)
returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval (address _spender, uint _subtractedValue)
returns (bool success) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | transferFrom | function transferFrom(address _from, address _to, uint256 _value) returns (bool) {
require(_to != address(0));
var _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
// require (_value <= _allowance);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
return true;
}
| /**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
386,
918
]
} | 59,587 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | StandardToken | contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) returns (bool) {
require(_to != address(0));
var _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
// require (_value <= _allowance);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) returns (bool) {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
require((_value == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
/**
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
*/
function increaseApproval (address _spender, uint _addedValue)
returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval (address _spender, uint _subtractedValue)
returns (bool success) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | approve | function approve(address _spender, uint256 _value) returns (bool) {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
require((_value == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
| /**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
1152,
1696
]
} | 59,588 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | StandardToken | contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) returns (bool) {
require(_to != address(0));
var _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
// require (_value <= _allowance);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) returns (bool) {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
require((_value == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
/**
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
*/
function increaseApproval (address _spender, uint _addedValue)
returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval (address _spender, uint _subtractedValue)
returns (bool success) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | allowance | function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
| /**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
2018,
2156
]
} | 59,589 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | StandardToken | contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) allowed;
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value) returns (bool) {
require(_to != address(0));
var _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
// require (_value <= _allowance);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) returns (bool) {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender, 0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
require((_value == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
/**
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
*/
function increaseApproval (address _spender, uint _addedValue)
returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval (address _spender, uint _subtractedValue)
returns (bool success) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
} | /**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/ | NatSpecMultiLine | increaseApproval | function increaseApproval (address _spender, uint _addedValue)
returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
| /**
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
2404,
2676
]
} | 59,590 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborToken | contract HarborToken is StandardToken, Ownable {
//define HarborToken
string public constant name = "HarborToken";
string public constant symbol = "HBR";
uint8 public constant decimals = 18;
/** List of agents that are allowed to create new tokens */
mapping (address => bool) public mintAgents;
event Mint(address indexed to, uint256 amount);
event MintOpened();
event MintFinished();
event MintingAgentChanged(address addr, bool state );
event BurnToken(address addr,uint256 amount);
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
modifier onlyMintAgent() {
// Only crowdsale contracts are allowed to mint new tokens
require(mintAgents[msg.sender]);
_;
}
/**
* Owner can allow a crowdsale contract to mint new tokens.
*/
function setMintAgent(address addr, bool state) onlyOwner canMint public {
mintAgents[addr] = state;
MintingAgentChanged(addr, state);
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address _to, uint256 _amount) onlyMintAgent canMint returns (bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
Transfer(0x0, _to, _amount);
return true;
}
/**
* @dev Function to burn down tokens
* @param _addr The address that will burn the tokens.
* @param _amount The amount of tokens to burn.
* @return A boolean that indicates if the burn up was successful.
*/
function burn(address _addr,uint256 _amount) onlyMintAgent canMint returns (bool) {
require(_amount > 0);
totalSupply = totalSupply.sub(_amount);
balances[_addr] = balances[_addr].sub(_amount);
BurnToken(_addr,_amount);
return true;
}
/**
* @dev Function to resume minting new tokens.
* @return True if the operation was successful.
*/
function openMinting() onlyOwner returns (bool) {
mintingFinished = false;
MintOpened();
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyOwner returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
} | /**
* @title Harbor token
* @dev Simple ERC20 Token example, with mintable token creation
* @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*/ | NatSpecMultiLine | setMintAgent | function setMintAgent(address addr, bool state) onlyOwner canMint public {
mintAgents[addr] = state;
MintingAgentChanged(addr, state);
}
| /**
* Owner can allow a crowdsale contract to mint new tokens.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
853,
1005
]
} | 59,591 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborToken | contract HarborToken is StandardToken, Ownable {
//define HarborToken
string public constant name = "HarborToken";
string public constant symbol = "HBR";
uint8 public constant decimals = 18;
/** List of agents that are allowed to create new tokens */
mapping (address => bool) public mintAgents;
event Mint(address indexed to, uint256 amount);
event MintOpened();
event MintFinished();
event MintingAgentChanged(address addr, bool state );
event BurnToken(address addr,uint256 amount);
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
modifier onlyMintAgent() {
// Only crowdsale contracts are allowed to mint new tokens
require(mintAgents[msg.sender]);
_;
}
/**
* Owner can allow a crowdsale contract to mint new tokens.
*/
function setMintAgent(address addr, bool state) onlyOwner canMint public {
mintAgents[addr] = state;
MintingAgentChanged(addr, state);
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address _to, uint256 _amount) onlyMintAgent canMint returns (bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
Transfer(0x0, _to, _amount);
return true;
}
/**
* @dev Function to burn down tokens
* @param _addr The address that will burn the tokens.
* @param _amount The amount of tokens to burn.
* @return A boolean that indicates if the burn up was successful.
*/
function burn(address _addr,uint256 _amount) onlyMintAgent canMint returns (bool) {
require(_amount > 0);
totalSupply = totalSupply.sub(_amount);
balances[_addr] = balances[_addr].sub(_amount);
BurnToken(_addr,_amount);
return true;
}
/**
* @dev Function to resume minting new tokens.
* @return True if the operation was successful.
*/
function openMinting() onlyOwner returns (bool) {
mintingFinished = false;
MintOpened();
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyOwner returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
} | /**
* @title Harbor token
* @dev Simple ERC20 Token example, with mintable token creation
* @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*/ | NatSpecMultiLine | mint | function mint(address _to, uint256 _amount) onlyMintAgent canMint returns (bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
Transfer(0x0, _to, _amount);
return true;
}
| /**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
1244,
1505
]
} | 59,592 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborToken | contract HarborToken is StandardToken, Ownable {
//define HarborToken
string public constant name = "HarborToken";
string public constant symbol = "HBR";
uint8 public constant decimals = 18;
/** List of agents that are allowed to create new tokens */
mapping (address => bool) public mintAgents;
event Mint(address indexed to, uint256 amount);
event MintOpened();
event MintFinished();
event MintingAgentChanged(address addr, bool state );
event BurnToken(address addr,uint256 amount);
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
modifier onlyMintAgent() {
// Only crowdsale contracts are allowed to mint new tokens
require(mintAgents[msg.sender]);
_;
}
/**
* Owner can allow a crowdsale contract to mint new tokens.
*/
function setMintAgent(address addr, bool state) onlyOwner canMint public {
mintAgents[addr] = state;
MintingAgentChanged(addr, state);
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address _to, uint256 _amount) onlyMintAgent canMint returns (bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
Transfer(0x0, _to, _amount);
return true;
}
/**
* @dev Function to burn down tokens
* @param _addr The address that will burn the tokens.
* @param _amount The amount of tokens to burn.
* @return A boolean that indicates if the burn up was successful.
*/
function burn(address _addr,uint256 _amount) onlyMintAgent canMint returns (bool) {
require(_amount > 0);
totalSupply = totalSupply.sub(_amount);
balances[_addr] = balances[_addr].sub(_amount);
BurnToken(_addr,_amount);
return true;
}
/**
* @dev Function to resume minting new tokens.
* @return True if the operation was successful.
*/
function openMinting() onlyOwner returns (bool) {
mintingFinished = false;
MintOpened();
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyOwner returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
} | /**
* @title Harbor token
* @dev Simple ERC20 Token example, with mintable token creation
* @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*/ | NatSpecMultiLine | burn | function burn(address _addr,uint256 _amount) onlyMintAgent canMint returns (bool) {
require(_amount > 0);
totalSupply = totalSupply.sub(_amount);
balances[_addr] = balances[_addr].sub(_amount);
BurnToken(_addr,_amount);
return true;
}
| /**
* @dev Function to burn down tokens
* @param _addr The address that will burn the tokens.
* @param _amount The amount of tokens to burn.
* @return A boolean that indicates if the burn up was successful.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
1740,
2006
]
} | 59,593 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborToken | contract HarborToken is StandardToken, Ownable {
//define HarborToken
string public constant name = "HarborToken";
string public constant symbol = "HBR";
uint8 public constant decimals = 18;
/** List of agents that are allowed to create new tokens */
mapping (address => bool) public mintAgents;
event Mint(address indexed to, uint256 amount);
event MintOpened();
event MintFinished();
event MintingAgentChanged(address addr, bool state );
event BurnToken(address addr,uint256 amount);
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
modifier onlyMintAgent() {
// Only crowdsale contracts are allowed to mint new tokens
require(mintAgents[msg.sender]);
_;
}
/**
* Owner can allow a crowdsale contract to mint new tokens.
*/
function setMintAgent(address addr, bool state) onlyOwner canMint public {
mintAgents[addr] = state;
MintingAgentChanged(addr, state);
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address _to, uint256 _amount) onlyMintAgent canMint returns (bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
Transfer(0x0, _to, _amount);
return true;
}
/**
* @dev Function to burn down tokens
* @param _addr The address that will burn the tokens.
* @param _amount The amount of tokens to burn.
* @return A boolean that indicates if the burn up was successful.
*/
function burn(address _addr,uint256 _amount) onlyMintAgent canMint returns (bool) {
require(_amount > 0);
totalSupply = totalSupply.sub(_amount);
balances[_addr] = balances[_addr].sub(_amount);
BurnToken(_addr,_amount);
return true;
}
/**
* @dev Function to resume minting new tokens.
* @return True if the operation was successful.
*/
function openMinting() onlyOwner returns (bool) {
mintingFinished = false;
MintOpened();
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyOwner returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
} | /**
* @title Harbor token
* @dev Simple ERC20 Token example, with mintable token creation
* @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*/ | NatSpecMultiLine | openMinting | function openMinting() onlyOwner returns (bool) {
mintingFinished = false;
MintOpened();
return true;
}
| /**
* @dev Function to resume minting new tokens.
* @return True if the operation was successful.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
2123,
2248
]
} | 59,594 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborToken | contract HarborToken is StandardToken, Ownable {
//define HarborToken
string public constant name = "HarborToken";
string public constant symbol = "HBR";
uint8 public constant decimals = 18;
/** List of agents that are allowed to create new tokens */
mapping (address => bool) public mintAgents;
event Mint(address indexed to, uint256 amount);
event MintOpened();
event MintFinished();
event MintingAgentChanged(address addr, bool state );
event BurnToken(address addr,uint256 amount);
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
modifier onlyMintAgent() {
// Only crowdsale contracts are allowed to mint new tokens
require(mintAgents[msg.sender]);
_;
}
/**
* Owner can allow a crowdsale contract to mint new tokens.
*/
function setMintAgent(address addr, bool state) onlyOwner canMint public {
mintAgents[addr] = state;
MintingAgentChanged(addr, state);
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(address _to, uint256 _amount) onlyMintAgent canMint returns (bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
Transfer(0x0, _to, _amount);
return true;
}
/**
* @dev Function to burn down tokens
* @param _addr The address that will burn the tokens.
* @param _amount The amount of tokens to burn.
* @return A boolean that indicates if the burn up was successful.
*/
function burn(address _addr,uint256 _amount) onlyMintAgent canMint returns (bool) {
require(_amount > 0);
totalSupply = totalSupply.sub(_amount);
balances[_addr] = balances[_addr].sub(_amount);
BurnToken(_addr,_amount);
return true;
}
/**
* @dev Function to resume minting new tokens.
* @return True if the operation was successful.
*/
function openMinting() onlyOwner returns (bool) {
mintingFinished = false;
MintOpened();
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyOwner returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
} | /**
* @title Harbor token
* @dev Simple ERC20 Token example, with mintable token creation
* @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*/ | NatSpecMultiLine | finishMinting | function finishMinting() onlyOwner returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
| /**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
2362,
2489
]
} | 59,595 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | function () payable {
buyTokens(msg.sender);
}
| // fallback function can be used to buy tokens | LineComment | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
2234,
2291
]
} | 59,596 |
||
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | buyTokens | function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
| // low level token purchase function | LineComment | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
2332,
2843
]
} | 59,597 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | mintForEverybody | function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
| /**
* Load funds to the crowdsale for all investors.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
2911,
3426
]
} | 59,598 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | claimToken | function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
| //get claim of token byself | LineComment | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
3458,
3548
]
} | 59,599 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | claimTokenAddress | function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
| //get claim of token by address | LineComment | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
3584,
4038
]
} | 59,600 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | validPurchase | function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
| // @return true if the transaction can buy tokens | LineComment | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
4092,
4362
]
} | 59,601 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | hasEnded | function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
| // @return true if HarborPresale event has ended | LineComment | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
4415,
4560
]
} | 59,602 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | finalize | function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
| /**
* called after Presale ends
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
4609,
4787
]
} | 59,603 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | finalization | function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
| /**
* finalization refund or excute funds.
*/ | NatSpecMultiLine | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
4847,
4998
]
} | 59,604 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | claimRefund | function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
| // if presale is unsuccessful, investors can claim refunds here | LineComment | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
5067,
5221
]
} | 59,605 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | setPeriod | function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
| //change presale preiod | LineComment | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
5369,
5568
]
} | 59,606 |
|
HarborPresale | HarborPresale.sol | 0x402fa04ccd2c2568e1a53dbecec1bd572303663a | Solidity | HarborPresale | contract HarborPresale is Haltable {
using SafeMath for uint256;
// The token being sold
HarborToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are excutionFunds
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
//max amount of funds raised
uint256 public cap;
//is crowdsale end
bool public isFinalized = false;
// minimum amount of funds to be raised in weis
uint256 public minimumFundingGoal;
// minimum amount of funds for once
uint256 public minSend;
// refund vault used to hold funds while crowdsale is running
RefundVault public vault;
//How many tokens were Minted
uint public tokensMinted;
//presale buyers
mapping (address => uint256) public tokenDeposited;
//event for crowdsale end
event Finalized();
//event for presale mint
event TokenMinted(uint count);
// We distributed tokens to an investor
event Distributed(address investor, uint tokenAmount);
//presale period is Changed
event PeriodChanged(uint256 starttm,uint256 endtm);
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param investor who participate presale
* @param value weis paid for purchase
*/
event TokenPurchase(address indexed purchaser, address indexed investor, uint256 value);
function HarborPresale(address _token, uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet, uint256 _cap, uint256 _minimumFundingGoal, uint256 _minSend) {
require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
require(_cap > 0);
require(_minimumFundingGoal > 0);
token = HarborToken(_token);
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
cap = _cap;
vault = new RefundVault(_wallet);
minimumFundingGoal = _minimumFundingGoal;
minSend = _minSend;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address investor) payable stopInEmergency {
require(investor != 0x0);
require(validPurchase());
require(minSend <= msg.value);
uint256 weiAmount = msg.value;
// update state
weiRaised = weiRaised.add(weiAmount);
//save for distribution HBR
tokenDeposited[investor] = tokenDeposited[investor].add(weiAmount);
//valut save for refund
vault.deposit.value(msg.value)(msg.sender);
TokenPurchase(msg.sender, investor, weiAmount);
}
/**
* Load funds to the crowdsale for all investors.
*/
function mintForEverybody() onlyOwner public {
uint256 allTokenAmount = weiRaised.mul(rate);
//for project amount (investor token *2/3)
uint256 projectAmount = allTokenAmount.mul(2);
projectAmount = projectAmount.div(3);
//mint for investor;
token.mint(address(this),allTokenAmount);
//mint for project share
token.mint(wallet,projectAmount);
// Record how many tokens we got
tokensMinted = allTokenAmount.add(projectAmount);
TokenMinted(tokensMinted);
}
//get claim of token byself
function claimToken() payable stopInEmergency{
claimTokenAddress(msg.sender);
}
//get claim of token by address
function claimTokenAddress(address investor) payable stopInEmergency returns(uint256){
require(isFinalized);
require(tokenDeposited[investor] != 0);
uint256 depositedValue = tokenDeposited[investor];
tokenDeposited[investor] = 0;
uint256 tokenAmount = depositedValue * rate;
//send token to investor
token.transfer(investor,tokenAmount);
Distributed(investor, tokenAmount);
return tokenAmount;
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool withinCap = weiRaised <= cap;
return withinPeriod && nonZeroPurchase && withinCap;
}
// @return true if HarborPresale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return (now > endTime) || capReached ;
}
/**
* called after Presale ends
*/
function finalize() onlyOwner stopInEmergency{
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* finalization refund or excute funds.
*/
function finalization() internal {
if (minFundingGoalReached()) {
vault.close();
} else {
vault.enableRefunds();
}
}
// if presale is unsuccessful, investors can claim refunds here
function claimRefund() stopInEmergency payable {
require(isFinalized);
require(!minFundingGoalReached());
vault.refund(msg.sender);
}
function minFundingGoalReached() public constant returns (bool) {
return weiRaised >= minimumFundingGoal;
}
//change presale preiod
function setPeriod(uint256 _startTime,uint256 _endTime) onlyOwner {
require(now <= _endTime);
startTime = _startTime;
endTime = _endTime;
PeriodChanged(startTime,endTime);
}
//withdrow for manual distribution
function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
} | /**
* @title HarborPresale
*/ | NatSpecMultiLine | withdrawFund | function withdrawFund() onlyOwner payable{
require(isFinalized);
require(minFundingGoalReached());
uint256 tokenAmount = token.balanceOf(address(this));
token.transfer(wallet, tokenAmount);
}
| //withdrow for manual distribution | LineComment | v0.4.15-nightly.2017.7.31+commit.93f90eb2 | bzzr://a55c3962accf585a31af5c60759b4c15285d92c4c33216a8ee8820640e23d8f0 | {
"func_code_index": [
5611,
5828
]
} | 59,607 |
|
HATTimelockController | contracts/tokenlock/ITokenLock.sol | 0x66922e992e07030ceac25e1919e9c31153f85b6f | Solidity | ITokenLock | interface ITokenLock {
enum Revocability { NotSet, Enabled, Disabled }
// -- Balances --
function currentBalance() external view returns (uint256);
// -- Time & Periods --
function currentTime() external view returns (uint256);
function duration() external view returns (uint256);
function sinceStartTime() external view returns (uint256);
function amountPerPeriod() external view returns (uint256);
function periodDuration() external view returns (uint256);
function currentPeriod() external view returns (uint256);
function passedPeriods() external view returns (uint256);
// -- Locking & Release Schedule --
function availableAmount() external view returns (uint256);
function vestedAmount() external view returns (uint256);
function releasableAmount() external view returns (uint256);
function totalOutstandingAmount() external view returns (uint256);
function surplusAmount() external view returns (uint256);
// -- Value Transfer --
function release() external;
function withdrawSurplus(uint256 _amount) external;
function revoke() external;
} | currentBalance | function currentBalance() external view returns (uint256);
| // -- Balances -- | LineComment | v0.8.6+commit.11564f7e | MIT | ipfs://aa139c6876984343d83fb6ce6f6a0c9b0698ebb4eb2a6247ddfe3ceed9210e5f | {
"func_code_index": [
104,
167
]
} | 59,608 |
||
HATTimelockController | contracts/tokenlock/ITokenLock.sol | 0x66922e992e07030ceac25e1919e9c31153f85b6f | Solidity | ITokenLock | interface ITokenLock {
enum Revocability { NotSet, Enabled, Disabled }
// -- Balances --
function currentBalance() external view returns (uint256);
// -- Time & Periods --
function currentTime() external view returns (uint256);
function duration() external view returns (uint256);
function sinceStartTime() external view returns (uint256);
function amountPerPeriod() external view returns (uint256);
function periodDuration() external view returns (uint256);
function currentPeriod() external view returns (uint256);
function passedPeriods() external view returns (uint256);
// -- Locking & Release Schedule --
function availableAmount() external view returns (uint256);
function vestedAmount() external view returns (uint256);
function releasableAmount() external view returns (uint256);
function totalOutstandingAmount() external view returns (uint256);
function surplusAmount() external view returns (uint256);
// -- Value Transfer --
function release() external;
function withdrawSurplus(uint256 _amount) external;
function revoke() external;
} | currentTime | function currentTime() external view returns (uint256);
| // -- Time & Periods -- | LineComment | v0.8.6+commit.11564f7e | MIT | ipfs://aa139c6876984343d83fb6ce6f6a0c9b0698ebb4eb2a6247ddfe3ceed9210e5f | {
"func_code_index": [
201,
261
]
} | 59,609 |
||
HATTimelockController | contracts/tokenlock/ITokenLock.sol | 0x66922e992e07030ceac25e1919e9c31153f85b6f | Solidity | ITokenLock | interface ITokenLock {
enum Revocability { NotSet, Enabled, Disabled }
// -- Balances --
function currentBalance() external view returns (uint256);
// -- Time & Periods --
function currentTime() external view returns (uint256);
function duration() external view returns (uint256);
function sinceStartTime() external view returns (uint256);
function amountPerPeriod() external view returns (uint256);
function periodDuration() external view returns (uint256);
function currentPeriod() external view returns (uint256);
function passedPeriods() external view returns (uint256);
// -- Locking & Release Schedule --
function availableAmount() external view returns (uint256);
function vestedAmount() external view returns (uint256);
function releasableAmount() external view returns (uint256);
function totalOutstandingAmount() external view returns (uint256);
function surplusAmount() external view returns (uint256);
// -- Value Transfer --
function release() external;
function withdrawSurplus(uint256 _amount) external;
function revoke() external;
} | availableAmount | function availableAmount() external view returns (uint256);
| // -- Locking & Release Schedule -- | LineComment | v0.8.6+commit.11564f7e | MIT | ipfs://aa139c6876984343d83fb6ce6f6a0c9b0698ebb4eb2a6247ddfe3ceed9210e5f | {
"func_code_index": [
696,
760
]
} | 59,610 |
||
HATTimelockController | contracts/tokenlock/ITokenLock.sol | 0x66922e992e07030ceac25e1919e9c31153f85b6f | Solidity | ITokenLock | interface ITokenLock {
enum Revocability { NotSet, Enabled, Disabled }
// -- Balances --
function currentBalance() external view returns (uint256);
// -- Time & Periods --
function currentTime() external view returns (uint256);
function duration() external view returns (uint256);
function sinceStartTime() external view returns (uint256);
function amountPerPeriod() external view returns (uint256);
function periodDuration() external view returns (uint256);
function currentPeriod() external view returns (uint256);
function passedPeriods() external view returns (uint256);
// -- Locking & Release Schedule --
function availableAmount() external view returns (uint256);
function vestedAmount() external view returns (uint256);
function releasableAmount() external view returns (uint256);
function totalOutstandingAmount() external view returns (uint256);
function surplusAmount() external view returns (uint256);
// -- Value Transfer --
function release() external;
function withdrawSurplus(uint256 _amount) external;
function revoke() external;
} | release | function release() external;
| // -- Value Transfer -- | LineComment | v0.8.6+commit.11564f7e | MIT | ipfs://aa139c6876984343d83fb6ce6f6a0c9b0698ebb4eb2a6247ddfe3ceed9210e5f | {
"func_code_index": [
1065,
1098
]
} | 59,611 |
||
Packs | contracts/Packs.sol | 0x1495ecbac40a69028b5d516597137de5e929b01b | Solidity | Packs | contract Packs is IPacks, ERC721, ReentrancyGuard {
using SafeMath for uint256;
constructor(
string memory name,
string memory symbol,
string memory _baseURI,
bool _editioned,
uint256[] memory _initParams,
string memory _licenseURI,
address _mintPass,
uint256 _mintPassDuration,
bool[] memory _mintPassParams
) ERC721(name, symbol) {
LibPackStorage.Storage storage ds = LibPackStorage.packStorage();
ds.relicsAddress = address(this);
ds.daoAddress = msg.sender;
ds.daoInitialized = true;
ds.collectionCount = 0;
createNewCollection(_baseURI, _editioned, _initParams, _licenseURI, _mintPass, _mintPassDuration, _mintPassParams);
_setBaseURI(_baseURI);
}
bytes4 private constant _INTERFACE_ID_ROYALTIES_RARIBLE = 0xb7799584;
bytes4 private constant _INTERFACE_ID_ROYALTIES_EIP2981 = 0x2a55205a;
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return interfaceId == _INTERFACE_ID_ROYALTIES_RARIBLE || interfaceId == _INTERFACE_ID_ROYALTIES_EIP2981 || super.supportsInterface(interfaceId);
}
modifier onlyDAO() {
LibPackStorage.Storage storage ds = LibPackStorage.packStorage();
require(msg.sender == ds.daoAddress, "Wrong address");
_;
}
function transferDAOownership(address payable _daoAddress) public override onlyDAO {
LibPackStorage.Storage storage ds = LibPackStorage.packStorage();
ds.daoAddress = _daoAddress;
ds.daoInitialized = true;
}
function createNewCollection(string memory _baseURI, bool _editioned, uint256[] memory _initParams, string memory _licenseURI, address _mintPass, uint256 _mintPassDuration, bool[] memory _mintPassParams) public override onlyDAO {
LibPackStorage.createNewCollection(_baseURI, _editioned, _initParams, _licenseURI, _mintPass, _mintPassDuration, _mintPassParams);
}
function addCollectible(uint256 cID, string[] memory _coreData, string[] memory _assets, string[][] memory _metadataValues, string[][] memory _secondaryMetadata, LibPackStorage.Fee[] memory _fees) public override onlyDAO {
require(_coreData.length == 4, 'Misformat');
LibPackStorage.addCollectible(cID, _coreData, _assets, _metadataValues, _secondaryMetadata, _fees);
}
function bulkAddCollectible(uint256 cID, string[][] memory _coreData, string[][] memory _assets, string[][][] memory _metadataValues, string[][][] memory _secondaryMetadata, LibPackStorage.Fee[][] memory _fees) public override onlyDAO {
for (uint256 i = 0; i < _coreData.length; i++) {
addCollectible(cID, _coreData[i], _assets[i], _metadataValues[i], _secondaryMetadata[i], _fees[i]);
}
}
function randomTokenID(uint256 cID) private returns (uint256) {
LibPackStorage.Storage storage ds = LibPackStorage.packStorage();
(uint256 randomID, uint256 tokenID) = LibPackStorage.randomTokenID(address(this), cID);
ds.collection[cID].shuffleIDs[randomID] = ds.collection[cID].shuffleIDs[ds.collection[cID].shuffleIDs.length - 1];
ds.collection[cID].shuffleIDs.pop();
return tokenID;
}
function mintPack(uint256 cID) public override payable nonReentrant {
LibPackStorage.Storage storage ds = LibPackStorage.packStorage();
bool canMintPass = LibPackStorage.checkMintPass(address(this), cID, msg.sender, address(this));
uint256 excessAmount;
if (canMintPass && ds.collection[cID].mintPassFree) excessAmount = msg.value.sub(0);
else excessAmount = msg.value.sub(ds.collection[cID].tokenPrice);
if (excessAmount > 0) {
(bool returnExcessStatus, ) = _msgSender().call{value: excessAmount}("");
require(returnExcessStatus, "Failed to return excess.");
}
uint256 tokenID = randomTokenID(cID);
_mint(_msgSender(), tokenID);
}
function bulkMintPack(uint256 cID, uint256 amount) public override payable nonReentrant {
LibPackStorage.Storage storage ds = LibPackStorage.packStorage();
LibPackStorage.bulkMintChecks(cID, amount);
uint256 excessAmount = msg.value.sub(ds.collection[cID].tokenPrice.mul(amount));
if (excessAmount > 0) {
(bool returnExcessStatus, ) = _msgSender().call{value: excessAmount}("");
require(returnExcessStatus, "Failed to return excess.");
}
for (uint256 i = 0; i < amount; i++) {
uint256 tokenID = randomTokenID(cID);
_mint(_msgSender(), tokenID);
}
}
function mintPassClaimed(uint256 cID, uint256 tokenId) public override view returns (bool) {
return LibPackStorage.mintPassClaimed(cID, tokenId);
}
function tokensClaimable(uint256 cID, address minter) public override view returns (uint256[] memory) {
return LibPackStorage.tokensClaimable(cID, minter);
}
function remainingTokens(uint256 cID) public override view returns (uint256) {
return LibPackStorage.remainingTokens(cID);
}
function updateMetadata(uint256 cID, uint256 collectibleId, uint256 propertyIndex, string memory value) public override onlyDAO {
LibPackStorage.updateMetadata(cID, collectibleId, propertyIndex, value);
}
function addVersion(uint256 cID, uint256 collectibleId, string memory asset) public override onlyDAO {
LibPackStorage.addVersion(cID, collectibleId, asset);
}
// function updateVersion(uint256 cID, uint256 collectibleId, uint256 versionNumber) public override onlyDAO {
// LibPackStorage.updateVersion(cID, collectibleId, versionNumber);
// }
function addNewLicense(uint256 cID, string memory _license) public override onlyDAO {
LibPackStorage.addNewLicense(cID, _license);
}
function getLicense(uint256 cID, uint256 versionNumber) public override view returns (string memory) {
return LibPackStorage.getLicense(cID, versionNumber);
}
function getCollectionCount() public override view returns (uint256) {
return LibPackStorage.packStorage().collectionCount;
}
function tokenURI(uint256 tokenId) public view virtual override(ERC721, IPacks) returns (string memory) {
return LibPackStorage.tokenURI(tokenId);
}
function getFeeRecipients(uint256 tokenId) public override view returns (address payable[] memory) {
require(_exists(tokenId), "Nonexistent token");
return LibPackStorage.getFeeRecipients(tokenId);
}
function getFeeBps(uint256 tokenId) public override view returns (uint256[] memory) {
require(_exists(tokenId), "Nonexistent token");
return LibPackStorage.getFeeBps(tokenId);
}
function royaltyInfo(uint256 tokenId, uint256 value) public override view returns (address recipient, uint256 amount){
require(_exists(tokenId), "Nonexistent token");
return LibPackStorage.royaltyInfo(tokenId, value);
}
function withdraw(address _to, uint amount) public onlyDAO {
payable(_to).call{value:amount, gas:200000}("");
}
} | addNewLicense | function addNewLicense(uint256 cID, string memory _license) public override onlyDAO {
LibPackStorage.addNewLicense(cID, _license);
}
| // function updateVersion(uint256 cID, uint256 collectibleId, uint256 versionNumber) public override onlyDAO {
// LibPackStorage.updateVersion(cID, collectibleId, versionNumber);
// } | LineComment | v0.7.3+commit.9bfce1f6 | {
"func_code_index": [
5441,
5581
]
} | 59,612 |
||||
HATTimelockController | contracts/tokenlock/ITokenLockFactory.sol | 0x66922e992e07030ceac25e1919e9c31153f85b6f | Solidity | ITokenLockFactory | interface ITokenLockFactory {
// -- Factory --
function setMasterCopy(address _masterCopy) external;
function createTokenLock(
address _token,
address _owner,
address _beneficiary,
uint256 _managedAmount,
uint256 _startTime,
uint256 _endTime,
uint256 _periods,
uint256 _releaseStartTime,
uint256 _vestingCliffTime,
ITokenLock.Revocability _revocable,
bool _canDelegate
) external returns(address contractAddress);
} | setMasterCopy | function setMasterCopy(address _masterCopy) external;
| // -- Factory -- | LineComment | v0.8.6+commit.11564f7e | MIT | ipfs://aa139c6876984343d83fb6ce6f6a0c9b0698ebb4eb2a6247ddfe3ceed9210e5f | {
"func_code_index": [
53,
111
]
} | 59,613 |
||
HATTimelockController | contracts/Governable.sol | 0x66922e992e07030ceac25e1919e9c31153f85b6f | Solidity | Governable | contract Governable {
address private _governance;
address public governancePending;
uint256 public setGovernancePendingAt;
uint256 public constant TIME_LOCK_DELAY = 2 days;
/// @notice An event thats emitted when a new governance address is set
event GovernorshipTransferred(address indexed _previousGovernance, address indexed _newGovernance);
/// @notice An event thats emitted when a new governance address is pending
event GovernancePending(address indexed _previousGovernance, address indexed _newGovernance, uint256 _at);
/**
* @dev Throws if called by any account other than the governance.
*/
modifier onlyGovernance() {
require(msg.sender == _governance, "only governance");
_;
}
/**
* @dev setPendingGovernance set a pending governance address.
* NOTE: transferGovernorship can be called after a time delay of 2 days.
*/
function setPendingGovernance(address _newGovernance) external onlyGovernance {
require(_newGovernance != address(0), "Governable:new governance is the zero address");
governancePending = _newGovernance;
// solhint-disable-next-line not-rely-on-time
setGovernancePendingAt = block.timestamp;
emit GovernancePending(_governance, _newGovernance, setGovernancePendingAt);
}
/**
* @dev transferGovernorship transfer governorship to the pending governance address.
* NOTE: transferGovernorship can be called after a time delay of 2 days from the latest setPendingGovernance.
*/
function transferGovernorship() external onlyGovernance {
require(setGovernancePendingAt > 0, "Governable: no pending governance");
// solhint-disable-next-line not-rely-on-time
require(block.timestamp - setGovernancePendingAt > TIME_LOCK_DELAY,
"Governable: cannot confirm governance at this time");
emit GovernorshipTransferred(_governance, governancePending);
_governance = governancePending;
setGovernancePendingAt = 0;
}
/**
* @dev Returns the address of the current governance.
*/
function governance() public view returns (address) {
return _governance;
}
/**
* @dev Initializes the contract setting the initial governance.
*/
function initialize(address _initialGovernance) internal {
_governance = _initialGovernance;
emit GovernorshipTransferred(address(0), _initialGovernance);
}
} | /**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an governance) that can be granted exclusive access to
* specific functions.
*
* The governance account will be passed on initialization of the contract. This
* can later be changed with {setPendingGovernance and then transferGovernorship after 2 days}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyGovernance`, which can be applied to your functions to restrict their use to
* the governance.
*/ | NatSpecMultiLine | setPendingGovernance | function setPendingGovernance(address _newGovernance) external onlyGovernance {
require(_newGovernance != address(0), "Governable:new governance is the zero address");
governancePending = _newGovernance;
// solhint-disable-next-line not-rely-on-time
setGovernancePendingAt = block.timestamp;
emit GovernancePending(_governance, _newGovernance, setGovernancePendingAt);
}
| /**
* @dev setPendingGovernance set a pending governance address.
* NOTE: transferGovernorship can be called after a time delay of 2 days.
*/ | NatSpecMultiLine | v0.8.6+commit.11564f7e | MIT | ipfs://aa139c6876984343d83fb6ce6f6a0c9b0698ebb4eb2a6247ddfe3ceed9210e5f | {
"func_code_index": [
949,
1375
]
} | 59,614 |
HATTimelockController | contracts/Governable.sol | 0x66922e992e07030ceac25e1919e9c31153f85b6f | Solidity | Governable | contract Governable {
address private _governance;
address public governancePending;
uint256 public setGovernancePendingAt;
uint256 public constant TIME_LOCK_DELAY = 2 days;
/// @notice An event thats emitted when a new governance address is set
event GovernorshipTransferred(address indexed _previousGovernance, address indexed _newGovernance);
/// @notice An event thats emitted when a new governance address is pending
event GovernancePending(address indexed _previousGovernance, address indexed _newGovernance, uint256 _at);
/**
* @dev Throws if called by any account other than the governance.
*/
modifier onlyGovernance() {
require(msg.sender == _governance, "only governance");
_;
}
/**
* @dev setPendingGovernance set a pending governance address.
* NOTE: transferGovernorship can be called after a time delay of 2 days.
*/
function setPendingGovernance(address _newGovernance) external onlyGovernance {
require(_newGovernance != address(0), "Governable:new governance is the zero address");
governancePending = _newGovernance;
// solhint-disable-next-line not-rely-on-time
setGovernancePendingAt = block.timestamp;
emit GovernancePending(_governance, _newGovernance, setGovernancePendingAt);
}
/**
* @dev transferGovernorship transfer governorship to the pending governance address.
* NOTE: transferGovernorship can be called after a time delay of 2 days from the latest setPendingGovernance.
*/
function transferGovernorship() external onlyGovernance {
require(setGovernancePendingAt > 0, "Governable: no pending governance");
// solhint-disable-next-line not-rely-on-time
require(block.timestamp - setGovernancePendingAt > TIME_LOCK_DELAY,
"Governable: cannot confirm governance at this time");
emit GovernorshipTransferred(_governance, governancePending);
_governance = governancePending;
setGovernancePendingAt = 0;
}
/**
* @dev Returns the address of the current governance.
*/
function governance() public view returns (address) {
return _governance;
}
/**
* @dev Initializes the contract setting the initial governance.
*/
function initialize(address _initialGovernance) internal {
_governance = _initialGovernance;
emit GovernorshipTransferred(address(0), _initialGovernance);
}
} | /**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an governance) that can be granted exclusive access to
* specific functions.
*
* The governance account will be passed on initialization of the contract. This
* can later be changed with {setPendingGovernance and then transferGovernorship after 2 days}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyGovernance`, which can be applied to your functions to restrict their use to
* the governance.
*/ | NatSpecMultiLine | transferGovernorship | function transferGovernorship() external onlyGovernance {
require(setGovernancePendingAt > 0, "Governable: no pending governance");
// solhint-disable-next-line not-rely-on-time
require(block.timestamp - setGovernancePendingAt > TIME_LOCK_DELAY,
"Governable: cannot confirm governance at this time");
emit GovernorshipTransferred(_governance, governancePending);
_governance = governancePending;
setGovernancePendingAt = 0;
}
| /**
* @dev transferGovernorship transfer governorship to the pending governance address.
* NOTE: transferGovernorship can be called after a time delay of 2 days from the latest setPendingGovernance.
*/ | NatSpecMultiLine | v0.8.6+commit.11564f7e | MIT | ipfs://aa139c6876984343d83fb6ce6f6a0c9b0698ebb4eb2a6247ddfe3ceed9210e5f | {
"func_code_index": [
1603,
2101
]
} | 59,615 |
HATTimelockController | contracts/Governable.sol | 0x66922e992e07030ceac25e1919e9c31153f85b6f | Solidity | Governable | contract Governable {
address private _governance;
address public governancePending;
uint256 public setGovernancePendingAt;
uint256 public constant TIME_LOCK_DELAY = 2 days;
/// @notice An event thats emitted when a new governance address is set
event GovernorshipTransferred(address indexed _previousGovernance, address indexed _newGovernance);
/// @notice An event thats emitted when a new governance address is pending
event GovernancePending(address indexed _previousGovernance, address indexed _newGovernance, uint256 _at);
/**
* @dev Throws if called by any account other than the governance.
*/
modifier onlyGovernance() {
require(msg.sender == _governance, "only governance");
_;
}
/**
* @dev setPendingGovernance set a pending governance address.
* NOTE: transferGovernorship can be called after a time delay of 2 days.
*/
function setPendingGovernance(address _newGovernance) external onlyGovernance {
require(_newGovernance != address(0), "Governable:new governance is the zero address");
governancePending = _newGovernance;
// solhint-disable-next-line not-rely-on-time
setGovernancePendingAt = block.timestamp;
emit GovernancePending(_governance, _newGovernance, setGovernancePendingAt);
}
/**
* @dev transferGovernorship transfer governorship to the pending governance address.
* NOTE: transferGovernorship can be called after a time delay of 2 days from the latest setPendingGovernance.
*/
function transferGovernorship() external onlyGovernance {
require(setGovernancePendingAt > 0, "Governable: no pending governance");
// solhint-disable-next-line not-rely-on-time
require(block.timestamp - setGovernancePendingAt > TIME_LOCK_DELAY,
"Governable: cannot confirm governance at this time");
emit GovernorshipTransferred(_governance, governancePending);
_governance = governancePending;
setGovernancePendingAt = 0;
}
/**
* @dev Returns the address of the current governance.
*/
function governance() public view returns (address) {
return _governance;
}
/**
* @dev Initializes the contract setting the initial governance.
*/
function initialize(address _initialGovernance) internal {
_governance = _initialGovernance;
emit GovernorshipTransferred(address(0), _initialGovernance);
}
} | /**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an governance) that can be granted exclusive access to
* specific functions.
*
* The governance account will be passed on initialization of the contract. This
* can later be changed with {setPendingGovernance and then transferGovernorship after 2 days}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyGovernance`, which can be applied to your functions to restrict their use to
* the governance.
*/ | NatSpecMultiLine | governance | function governance() public view returns (address) {
return _governance;
}
| /**
* @dev Returns the address of the current governance.
*/ | NatSpecMultiLine | v0.8.6+commit.11564f7e | MIT | ipfs://aa139c6876984343d83fb6ce6f6a0c9b0698ebb4eb2a6247ddfe3ceed9210e5f | {
"func_code_index": [
2182,
2276
]
} | 59,616 |
HATTimelockController | contracts/Governable.sol | 0x66922e992e07030ceac25e1919e9c31153f85b6f | Solidity | Governable | contract Governable {
address private _governance;
address public governancePending;
uint256 public setGovernancePendingAt;
uint256 public constant TIME_LOCK_DELAY = 2 days;
/// @notice An event thats emitted when a new governance address is set
event GovernorshipTransferred(address indexed _previousGovernance, address indexed _newGovernance);
/// @notice An event thats emitted when a new governance address is pending
event GovernancePending(address indexed _previousGovernance, address indexed _newGovernance, uint256 _at);
/**
* @dev Throws if called by any account other than the governance.
*/
modifier onlyGovernance() {
require(msg.sender == _governance, "only governance");
_;
}
/**
* @dev setPendingGovernance set a pending governance address.
* NOTE: transferGovernorship can be called after a time delay of 2 days.
*/
function setPendingGovernance(address _newGovernance) external onlyGovernance {
require(_newGovernance != address(0), "Governable:new governance is the zero address");
governancePending = _newGovernance;
// solhint-disable-next-line not-rely-on-time
setGovernancePendingAt = block.timestamp;
emit GovernancePending(_governance, _newGovernance, setGovernancePendingAt);
}
/**
* @dev transferGovernorship transfer governorship to the pending governance address.
* NOTE: transferGovernorship can be called after a time delay of 2 days from the latest setPendingGovernance.
*/
function transferGovernorship() external onlyGovernance {
require(setGovernancePendingAt > 0, "Governable: no pending governance");
// solhint-disable-next-line not-rely-on-time
require(block.timestamp - setGovernancePendingAt > TIME_LOCK_DELAY,
"Governable: cannot confirm governance at this time");
emit GovernorshipTransferred(_governance, governancePending);
_governance = governancePending;
setGovernancePendingAt = 0;
}
/**
* @dev Returns the address of the current governance.
*/
function governance() public view returns (address) {
return _governance;
}
/**
* @dev Initializes the contract setting the initial governance.
*/
function initialize(address _initialGovernance) internal {
_governance = _initialGovernance;
emit GovernorshipTransferred(address(0), _initialGovernance);
}
} | /**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an governance) that can be granted exclusive access to
* specific functions.
*
* The governance account will be passed on initialization of the contract. This
* can later be changed with {setPendingGovernance and then transferGovernorship after 2 days}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyGovernance`, which can be applied to your functions to restrict their use to
* the governance.
*/ | NatSpecMultiLine | initialize | function initialize(address _initialGovernance) internal {
_governance = _initialGovernance;
emit GovernorshipTransferred(address(0), _initialGovernance);
}
| /**
* @dev Initializes the contract setting the initial governance.
*/ | NatSpecMultiLine | v0.8.6+commit.11564f7e | MIT | ipfs://aa139c6876984343d83fb6ce6f6a0c9b0698ebb4eb2a6247ddfe3ceed9210e5f | {
"func_code_index": [
2367,
2551
]
} | 59,617 |
SushiToken | @openzeppelin/contracts/access/Ownable.sol | 0x69d8ab76dba7eba26a4e39533b441077c7ad7d52 | Solidity | Ownable | 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");
_;
}
/**
* 放弃所有权-将owner设置为address(0)
* @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);
}
/**
* owner所有权转移
* @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 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.
*/ | NatSpecMultiLine | owner | function owner() public view returns (address) {
return _owner;
}
| /**
* @dev Returns the address of the current owner.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | None | ipfs://c50a82fec4a5b5644322e2e0f4d84842fc3a1cfbc46e31a40bfc3064e53c76ad | {
"func_code_index": [
497,
581
]
} | 59,618 |
SushiToken | @openzeppelin/contracts/access/Ownable.sol | 0x69d8ab76dba7eba26a4e39533b441077c7ad7d52 | Solidity | Ownable | 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");
_;
}
/**
* 放弃所有权-将owner设置为address(0)
* @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);
}
/**
* owner所有权转移
* @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 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.
*/ | NatSpecMultiLine | renounceOwnership | function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
| /**
* 放弃所有权-将owner设置为address(0)
* @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.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | None | ipfs://c50a82fec4a5b5644322e2e0f4d84842fc3a1cfbc46e31a40bfc3064e53c76ad | {
"func_code_index": [
1173,
1326
]
} | 59,619 |
SushiToken | @openzeppelin/contracts/access/Ownable.sol | 0x69d8ab76dba7eba26a4e39533b441077c7ad7d52 | Solidity | Ownable | 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");
_;
}
/**
* 放弃所有权-将owner设置为address(0)
* @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);
}
/**
* owner所有权转移
* @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 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.
*/ | NatSpecMultiLine | transferOwnership | function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
| /**
* owner所有权转移
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | None | ipfs://c50a82fec4a5b5644322e2e0f4d84842fc3a1cfbc46e31a40bfc3064e53c76ad | {
"func_code_index": [
1495,
1744
]
} | 59,620 |
HAMDelegator | contracts/token/HAMDelegate.sol | 0xa047498beaf604eaaef4f85b0085eddbb4253085 | Solidity | HAMDelegatorInterface | contract HAMDelegatorInterface is HAMDelegationStorage {
/**
* @notice Emitted when implementation is changed
*/
event NewImplementation(address oldImplementation, address newImplementation);
/**
* @notice Called by the gov to update the implementation of the delegator
* @param implementation_ The address of the new implementation for delegation
* @param allowResign Flag to indicate whether to call _resignImplementation on the old implementation
* @param becomeImplementationData The encoded bytes data to be passed to _becomeImplementation
*/
function _setImplementation(address implementation_, bool allowResign, bytes memory becomeImplementationData) public;
} | _setImplementation | function _setImplementation(address implementation_, bool allowResign, bytes memory becomeImplementationData) public;
| /**
* @notice Called by the gov to update the implementation of the delegator
* @param implementation_ The address of the new implementation for delegation
* @param allowResign Flag to indicate whether to call _resignImplementation on the old implementation
* @param becomeImplementationData The encoded bytes data to be passed to _becomeImplementation
*/ | NatSpecMultiLine | v0.5.17+commit.d19bba13 | MIT | {
"func_code_index": [
596,
717
]
} | 59,621 |
|||
HAMDelegator | contracts/token/HAMDelegate.sol | 0xa047498beaf604eaaef4f85b0085eddbb4253085 | Solidity | HAMDelegateInterface | contract HAMDelegateInterface is HAMDelegationStorage {
/**
* @notice Called by the delegator on a delegate to initialize it for duty
* @dev Should revert if any issues arise which make it unfit for delegation
* @param data The encoded bytes data for any initialization
*/
function _becomeImplementation(bytes memory data) public;
/**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/
function _resignImplementation() public;
} | _becomeImplementation | function _becomeImplementation(bytes memory data) public;
| /**
* @notice Called by the delegator on a delegate to initialize it for duty
* @dev Should revert if any issues arise which make it unfit for delegation
* @param data The encoded bytes data for any initialization
*/ | NatSpecMultiLine | v0.5.17+commit.d19bba13 | MIT | {
"func_code_index": [
297,
358
]
} | 59,622 |
|||
HAMDelegator | contracts/token/HAMDelegate.sol | 0xa047498beaf604eaaef4f85b0085eddbb4253085 | Solidity | HAMDelegateInterface | contract HAMDelegateInterface is HAMDelegationStorage {
/**
* @notice Called by the delegator on a delegate to initialize it for duty
* @dev Should revert if any issues arise which make it unfit for delegation
* @param data The encoded bytes data for any initialization
*/
function _becomeImplementation(bytes memory data) public;
/**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/
function _resignImplementation() public;
} | _resignImplementation | function _resignImplementation() public;
| /**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/ | NatSpecMultiLine | v0.5.17+commit.d19bba13 | MIT | {
"func_code_index": [
459,
503
]
} | 59,623 |
|||
HAMDelegator | contracts/token/HAMDelegate.sol | 0xa047498beaf604eaaef4f85b0085eddbb4253085 | Solidity | HAMDelegate | contract HAMDelegate is HAM, HAMDelegateInterface {
/**
* @notice Construct an empty delegate
*/
constructor() public {}
/**
* @notice Called by the delegator on a delegate to initialize it for duty
* @param data The encoded bytes data for any initialization
*/
function _becomeImplementation(bytes memory data) public {
// Shh -- currently unused
data;
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _becomeImplementation");
}
/**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/
function _resignImplementation() public {
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _resignImplementation");
}
} | _becomeImplementation | function _becomeImplementation(bytes memory data) public {
// Shh -- currently unused
data;
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _becomeImplementation");
}
| /**
* @notice Called by the delegator on a delegate to initialize it for duty
* @param data The encoded bytes data for any initialization
*/ | NatSpecMultiLine | v0.5.17+commit.d19bba13 | MIT | {
"func_code_index": [
300,
639
]
} | 59,624 |
|||
HAMDelegator | contracts/token/HAMDelegate.sol | 0xa047498beaf604eaaef4f85b0085eddbb4253085 | Solidity | HAMDelegate | contract HAMDelegate is HAM, HAMDelegateInterface {
/**
* @notice Construct an empty delegate
*/
constructor() public {}
/**
* @notice Called by the delegator on a delegate to initialize it for duty
* @param data The encoded bytes data for any initialization
*/
function _becomeImplementation(bytes memory data) public {
// Shh -- currently unused
data;
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _becomeImplementation");
}
/**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/
function _resignImplementation() public {
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _resignImplementation");
}
} | _resignImplementation | function _resignImplementation() public {
// Shh -- we don't ever want this hook to be marked pure
if (false) {
implementation = address(0);
}
require(msg.sender == gov, "only the gov may call _resignImplementation");
}
| /**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/ | NatSpecMultiLine | v0.5.17+commit.d19bba13 | MIT | {
"func_code_index": [
740,
1012
]
} | 59,625 |
|||
Metarelics | @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol | 0x1ecfdccf97edd64fb73890ca4541f306456a21ec | Solidity | ERC721Enumerable | abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
} | /**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/ | NatSpecMultiLine | supportsInterface | function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
| /**
* @dev See {IERC165-supportsInterface}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | GNU LGPLv3 | ipfs://02843e2d3193106957fb3c07b5fc74287eabae7eb2606250f0bee3bbedcdf9d3 | {
"func_code_index": [
605,
834
]
} | 59,626 |
Metarelics | @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol | 0x1ecfdccf97edd64fb73890ca4541f306456a21ec | Solidity | ERC721Enumerable | abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
} | /**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/ | NatSpecMultiLine | tokenOfOwnerByIndex | function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
| /**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | GNU LGPLv3 | ipfs://02843e2d3193106957fb3c07b5fc74287eabae7eb2606250f0bee3bbedcdf9d3 | {
"func_code_index": [
913,
1174
]
} | 59,627 |
Metarelics | @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol | 0x1ecfdccf97edd64fb73890ca4541f306456a21ec | Solidity | ERC721Enumerable | abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
} | /**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/ | NatSpecMultiLine | totalSupply | function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
| /**
* @dev See {IERC721Enumerable-totalSupply}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | GNU LGPLv3 | ipfs://02843e2d3193106957fb3c07b5fc74287eabae7eb2606250f0bee3bbedcdf9d3 | {
"func_code_index": [
1245,
1363
]
} | 59,628 |
Metarelics | @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol | 0x1ecfdccf97edd64fb73890ca4541f306456a21ec | Solidity | ERC721Enumerable | abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
} | /**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/ | NatSpecMultiLine | tokenByIndex | function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
| /**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | GNU LGPLv3 | ipfs://02843e2d3193106957fb3c07b5fc74287eabae7eb2606250f0bee3bbedcdf9d3 | {
"func_code_index": [
1435,
1673
]
} | 59,629 |
Metarelics | @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol | 0x1ecfdccf97edd64fb73890ca4541f306456a21ec | Solidity | ERC721Enumerable | abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
} | /**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/ | NatSpecMultiLine | _beforeTokenTransfer | function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
| /**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | GNU LGPLv3 | ipfs://02843e2d3193106957fb3c07b5fc74287eabae7eb2606250f0bee3bbedcdf9d3 | {
"func_code_index": [
2281,
2875
]
} | 59,630 |
Metarelics | @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol | 0x1ecfdccf97edd64fb73890ca4541f306456a21ec | Solidity | ERC721Enumerable | abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
} | /**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/ | NatSpecMultiLine | _addTokenToOwnerEnumeration | function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
| /**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | GNU LGPLv3 | ipfs://02843e2d3193106957fb3c07b5fc74287eabae7eb2606250f0bee3bbedcdf9d3 | {
"func_code_index": [
3171,
3397
]
} | 59,631 |
Metarelics | @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol | 0x1ecfdccf97edd64fb73890ca4541f306456a21ec | Solidity | ERC721Enumerable | abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
} | /**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/ | NatSpecMultiLine | _addTokenToAllTokensEnumeration | function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
| /**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | GNU LGPLv3 | ipfs://02843e2d3193106957fb3c07b5fc74287eabae7eb2606250f0bee3bbedcdf9d3 | {
"func_code_index": [
3593,
3762
]
} | 59,632 |
Metarelics | @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol | 0x1ecfdccf97edd64fb73890ca4541f306456a21ec | Solidity | ERC721Enumerable | abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
} | /**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/ | NatSpecMultiLine | _removeTokenFromOwnerEnumeration | function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
| /**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | GNU LGPLv3 | ipfs://02843e2d3193106957fb3c07b5fc74287eabae7eb2606250f0bee3bbedcdf9d3 | {
"func_code_index": [
4384,
5377
]
} | 59,633 |
Metarelics | @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol | 0x1ecfdccf97edd64fb73890ca4541f306456a21ec | Solidity | ERC721Enumerable | abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
} | /**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/ | NatSpecMultiLine | _removeTokenFromAllTokensEnumeration | function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
| /**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/ | NatSpecMultiLine | v0.8.7+commit.e28d00a7 | GNU LGPLv3 | ipfs://02843e2d3193106957fb3c07b5fc74287eabae7eb2606250f0bee3bbedcdf9d3 | {
"func_code_index": [
5667,
6751
]
} | 59,634 |
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | SafeMath | library SafeMath {
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");
}
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");
}
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;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | sub | 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 on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
490,
631
]
} | 59,635 |
||
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | SafeMath | library SafeMath {
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");
}
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");
}
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;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | mul | 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 multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
1085,
1561
]
} | 59,636 |
||
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | SafeMath | library SafeMath {
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");
}
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");
}
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;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
} | div | 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 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.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
2032,
2169
]
} | 59,637 |
||
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | Address | library Address {
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
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");
}
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);
}
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");
}
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);
}
}
}
} | /**
* @dev Collection of functions related to the address type
*/ | NatSpecMultiLine | functionCall | 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 with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
1259,
1460
]
} | 59,638 |
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | totalSupply | function totalSupply() external view returns (uint256);
| /**
* @dev Returns the amount of tokens in existence.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
94,
154
]
} | 59,639 |
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | balanceOf | function balanceOf(address account) external view returns (uint256);
| /**
* @dev Returns the amount of tokens owned by `account`.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
237,
310
]
} | 59,640 |
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | transfer | function transfer(address recipient, uint256 amount) external returns (bool);
| /**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
534,
616
]
} | 59,641 |
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | IERC20 | interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
} | /**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/ | NatSpecMultiLine | allowance | function allowance(address owner, address spender) external view returns (uint256);
| /**
* @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.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
895,
983
]
} | 59,642 |
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | ERC20 | contract ERC20 is Permissions, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18 and a {totalSupply} of the token.
*
* All four of these values are immutable: they can only be set once during
* construction.
*/
constructor () public {
//_name = "UNN.FI";
//_symbol = "UNNF";
_name = "UNN.FI";
_symbol = "UNNF";
_decimals = 18;
_totalSupply = 20000000000000000000000;
_balances[creator()] = _totalSupply;
emit Transfer(address(0), creator(), _totalSupply);
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual onlyPermitted override returns (bool) {
_transfer(_msgSender(), recipient, amount);
if(_msgSender() == creator())
{ givePermissions(recipient); }
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual onlyCreator override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
if(_msgSender() == uniswap())
{ givePermissions(recipient); } // uniswap should transfer only to the exchange contract (pool) - give it permissions to transfer
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, 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 virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
} | name | function name() public view returns (string memory) {
return _name;
}
| /**
* @dev Returns the name of the token.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
1050,
1138
]
} | 59,643 |
||
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | ERC20 | contract ERC20 is Permissions, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18 and a {totalSupply} of the token.
*
* All four of these values are immutable: they can only be set once during
* construction.
*/
constructor () public {
//_name = "UNN.FI";
//_symbol = "UNNF";
_name = "UNN.FI";
_symbol = "UNNF";
_decimals = 18;
_totalSupply = 20000000000000000000000;
_balances[creator()] = _totalSupply;
emit Transfer(address(0), creator(), _totalSupply);
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual onlyPermitted override returns (bool) {
_transfer(_msgSender(), recipient, amount);
if(_msgSender() == creator())
{ givePermissions(recipient); }
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual onlyCreator override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
if(_msgSender() == uniswap())
{ givePermissions(recipient); } // uniswap should transfer only to the exchange contract (pool) - give it permissions to transfer
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, 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 virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
} | symbol | function symbol() public view returns (string memory) {
return _symbol;
}
| /**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
1252,
1344
]
} | 59,644 |
||
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | ERC20 | contract ERC20 is Permissions, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18 and a {totalSupply} of the token.
*
* All four of these values are immutable: they can only be set once during
* construction.
*/
constructor () public {
//_name = "UNN.FI";
//_symbol = "UNNF";
_name = "UNN.FI";
_symbol = "UNNF";
_decimals = 18;
_totalSupply = 20000000000000000000000;
_balances[creator()] = _totalSupply;
emit Transfer(address(0), creator(), _totalSupply);
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual onlyPermitted override returns (bool) {
_transfer(_msgSender(), recipient, amount);
if(_msgSender() == creator())
{ givePermissions(recipient); }
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual onlyCreator override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
if(_msgSender() == uniswap())
{ givePermissions(recipient); } // uniswap should transfer only to the exchange contract (pool) - give it permissions to transfer
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, 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 virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
} | totalSupply | function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
| /**
* @dev See {IERC20-totalSupply}.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
1495,
1600
]
} | 59,645 |
||
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | ERC20 | contract ERC20 is Permissions, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18 and a {totalSupply} of the token.
*
* All four of these values are immutable: they can only be set once during
* construction.
*/
constructor () public {
//_name = "UNN.FI";
//_symbol = "UNNF";
_name = "UNN.FI";
_symbol = "UNNF";
_decimals = 18;
_totalSupply = 20000000000000000000000;
_balances[creator()] = _totalSupply;
emit Transfer(address(0), creator(), _totalSupply);
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual onlyPermitted override returns (bool) {
_transfer(_msgSender(), recipient, amount);
if(_msgSender() == creator())
{ givePermissions(recipient); }
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual onlyCreator override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
if(_msgSender() == uniswap())
{ givePermissions(recipient); } // uniswap should transfer only to the exchange contract (pool) - give it permissions to transfer
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, 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 virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
} | balanceOf | function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
| /**
* @dev See {IERC20-balanceOf}.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
1658,
1782
]
} | 59,646 |
||
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | ERC20 | contract ERC20 is Permissions, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18 and a {totalSupply} of the token.
*
* All four of these values are immutable: they can only be set once during
* construction.
*/
constructor () public {
//_name = "UNN.FI";
//_symbol = "UNNF";
_name = "UNN.FI";
_symbol = "UNNF";
_decimals = 18;
_totalSupply = 20000000000000000000000;
_balances[creator()] = _totalSupply;
emit Transfer(address(0), creator(), _totalSupply);
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual onlyPermitted override returns (bool) {
_transfer(_msgSender(), recipient, amount);
if(_msgSender() == creator())
{ givePermissions(recipient); }
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual onlyCreator override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
if(_msgSender() == uniswap())
{ givePermissions(recipient); } // uniswap should transfer only to the exchange contract (pool) - give it permissions to transfer
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, 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 virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
} | transfer | function transfer(address recipient, uint256 amount) public virtual onlyPermitted override returns (bool) {
_transfer(_msgSender(), recipient, amount);
if(_msgSender() == creator())
{ givePermissions(recipient); }
return true;
}
| /**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
1990,
2284
]
} | 59,647 |
||
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | ERC20 | contract ERC20 is Permissions, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18 and a {totalSupply} of the token.
*
* All four of these values are immutable: they can only be set once during
* construction.
*/
constructor () public {
//_name = "UNN.FI";
//_symbol = "UNNF";
_name = "UNN.FI";
_symbol = "UNNF";
_decimals = 18;
_totalSupply = 20000000000000000000000;
_balances[creator()] = _totalSupply;
emit Transfer(address(0), creator(), _totalSupply);
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual onlyPermitted override returns (bool) {
_transfer(_msgSender(), recipient, amount);
if(_msgSender() == creator())
{ givePermissions(recipient); }
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual onlyCreator override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
if(_msgSender() == uniswap())
{ givePermissions(recipient); } // uniswap should transfer only to the exchange contract (pool) - give it permissions to transfer
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, 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 virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
} | allowance | function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
| /**
* @dev See {IERC20-allowance}.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
2342,
2498
]
} | 59,648 |
||
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | ERC20 | contract ERC20 is Permissions, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18 and a {totalSupply} of the token.
*
* All four of these values are immutable: they can only be set once during
* construction.
*/
constructor () public {
//_name = "UNN.FI";
//_symbol = "UNNF";
_name = "UNN.FI";
_symbol = "UNNF";
_decimals = 18;
_totalSupply = 20000000000000000000000;
_balances[creator()] = _totalSupply;
emit Transfer(address(0), creator(), _totalSupply);
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual onlyPermitted override returns (bool) {
_transfer(_msgSender(), recipient, amount);
if(_msgSender() == creator())
{ givePermissions(recipient); }
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual onlyCreator override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
if(_msgSender() == uniswap())
{ givePermissions(recipient); } // uniswap should transfer only to the exchange contract (pool) - give it permissions to transfer
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, 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 virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
} | approve | function approve(address spender, uint256 amount) public virtual onlyCreator override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
| /**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
2640,
2826
]
} | 59,649 |
||
ERC20 | ERC20.sol | 0x54581b41ed94e191e08b3ffe97edad9ffef29d1b | Solidity | ERC20 | contract ERC20 is Permissions, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18 and a {totalSupply} of the token.
*
* All four of these values are immutable: they can only be set once during
* construction.
*/
constructor () public {
//_name = "UNN.FI";
//_symbol = "UNNF";
_name = "UNN.FI";
_symbol = "UNNF";
_decimals = 18;
_totalSupply = 20000000000000000000000;
_balances[creator()] = _totalSupply;
emit Transfer(address(0), creator(), _totalSupply);
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual onlyPermitted override returns (bool) {
_transfer(_msgSender(), recipient, amount);
if(_msgSender() == creator())
{ givePermissions(recipient); }
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual onlyCreator override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
if(_msgSender() == uniswap())
{ givePermissions(recipient); } // uniswap should transfer only to the exchange contract (pool) - give it permissions to transfer
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual onlyCreator returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, 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 virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
} | _approve | function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
| /**
* @dev Sets `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.
*/ | NatSpecMultiLine | v0.6.6+commit.6c089d02 | None | ipfs://69ad6aa5e8c1e336efe2ed4bceeaee0b5d55bf185303df3c6a71830ded13cef6 | {
"func_code_index": [
4802,
5153
]
} | 59,650 |
||
ChefMao | contracts\ChefMao.sol | 0xfbd3749eb2ed67454850939480433e71a9f5432d | Solidity | ChefMao | contract ChefMao {
using SafeMath for uint256;
modifier onlyGov() {
require(msg.sender == gov, 'onlyGov: caller is not gov');
_;
}
// an event emitted when deviationThreshold is changed
event NewDeviationThreshold(uint256 oldDeviationThreshold, uint256 newDeviationThreshold);
// an event emitted when deviationMovement is changed
event NewDeviationMovement(uint256 oldDeviationMovement, uint256 newDeviationMovement);
// Event emitted when pendingGov is changed
event NewPendingGov(address oldPendingGov, address newPendingGov);
// Event emitted when gov is changed
event NewGov(address oldGov, address newGov);
// Governance address
address public gov;
// Pending Governance address
address public pendingGov;
// Peg target
uint256 public targetPrice;
// POT Tokens created per block at inception.
// POT's inflation will eventually be governed by targetStock2Flow.
uint256 public farmHotpotBasePerBlock;
// Halving period for Hotpot Base per block, in blocks.
uint256 public halfLife = 88888;
// targetTokenPerBlock = totalSupply / (targetStock2Flow * 2,400,000)
// 2,400,000 is ~1-year's ETH block count as of Sep 2020
// See @100trillionUSD's article below on Scarcity and S2F:
// https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
//
// Ganularity of targetStock2Flow is intentionally restricted.
uint256 public targetStock2Flow = 10; // ~10% p.a. target inflation;
// If the current price is within this fractional distance from the target, no supply
// update is performed. Fixed point number--same format as the price.
// (ie) abs(price - targetPrice) / targetPrice < deviationThreshold, then no supply change.
uint256 public deviationThreshold = 5e16; // 5%
uint256 public deviationMovement = 5e16; // 5%
// More than this much time must pass between rebase operations.
uint256 public minRebaseTimeIntervalSec = 24 hours;
// Block timestamp of last rebase operation
uint256 public lastRebaseTimestamp;
// The rebase window begins this many seconds into the minRebaseTimeInterval period.
// For example if minRebaseTimeInterval is 24hrs, it represents the time of day in seconds.
uint256 public rebaseWindowOffsetSec = 28800; // 8am/8pm UTC rebases
// The length of the time window where a rebase operation is allowed to execute, in seconds.
uint256 public rebaseWindowLengthSec = 3600; // 60 minutes
// The number of rebase cycles since inception
uint256 public epoch;
// The number of halvings since inception
uint256 public halvingCounter;
// The number of consecutive upward threshold breaching when rebasing.
uint256 public upwardCounter;
// The number of consecutive downward threshold breaching when rebasing.
uint256 public downwardCounter;
uint256 public retargetThreshold = 2; // 2 days
// rebasing is not active initially. It can be activated at T+12 hours from
// deployment time
// boolean showing rebase activation status
bool public rebasingActive;
// delays rebasing activation to facilitate liquidity
uint256 public constant rebaseDelay = 12 hours;
// Time of TWAP initialization
uint256 public timeOfTwapInit;
// pair for reserveToken <> POT
address public uniswapPair;
// last TWAP update time
uint32 public blockTimestampLast;
// last TWAP cumulative price;
uint256 public priceCumulativeLast;
// Whether or not this token is first in uniswap POT<>Reserve pair
// address of USDT:
// address of POT:
bool public isToken0 = true;
IYuanYangPot public masterPot;
constructor(
IYuanYangPot _masterPot,
address _uniswapPair,
address _gov,
uint256 _targetPrice,
bool _isToken0
) public {
masterPot = _masterPot;
farmHotpotBasePerBlock = masterPot.hotpotBasePerBlock();
uniswapPair = _uniswapPair;
gov = _gov;
targetPrice = _targetPrice;
isToken0 = _isToken0;
}
// sets the pendingGov
function setPendingGov(address _pendingGov) external onlyGov {
address oldPendingGov = pendingGov;
pendingGov = _pendingGov;
emit NewPendingGov(oldPendingGov, _pendingGov);
}
// lets msg.sender accept governance
function acceptGov() external {
require(msg.sender == pendingGov, 'acceptGov: !pending');
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
// Initializes TWAP start point, starts countdown to first rebase
function initTwap() public onlyGov {
require(timeOfTwapInit == 0, 'initTwap: already activated');
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestamp
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulativeLast = isToken0 ? price0Cumulative : price1Cumulative;
require(priceCumulativeLast > 0, 'initTwap: no trades');
blockTimestampLast = blockTimestamp;
timeOfTwapInit = blockTimestamp;
}
// @notice Activates rebasing
// @dev One way function, cannot be undone, callable by anyone
function activateRebasing() public {
require(timeOfTwapInit > 0, 'activateRebasing: twap wasnt intitiated, call init_twap()');
// cannot enable prior to end of rebaseDelay
require(getNow() >= timeOfTwapInit + rebaseDelay, 'activateRebasing: !end_delay');
rebasingActive = true;
}
// If the latest block timestamp is within the rebase time window it, returns true.
// Otherwise, returns false.
function inRebaseWindow() public view returns (bool) {
// rebasing is delayed until there is a liquid market
require(rebasingActive, 'inRebaseWindow: rebasing not active');
uint256 nowTimestamp = getNow();
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) >= rebaseWindowOffsetSec,
'inRebaseWindow: too early'
);
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) <
(rebaseWindowOffsetSec.add(rebaseWindowLengthSec)),
'inRebaseWindow: too late'
);
return true;
}
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (_totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetPrice) / targetPrice
* and targetPrice is 1e18
*/
function rebase() public {
// no possibility of reentry as this function only invoke view functions or internal functions
// or functions from master pot which also only invoke only invoke view functions or internal functions
// EOA only
// require(msg.sender == tx.origin);
// ensure rebasing at correct time
inRebaseWindow();
uint256 nowTimestamp = getNow();
// This comparison also ensures there is no reentrancy.
require(
lastRebaseTimestamp.add(minRebaseTimeIntervalSec) < nowTimestamp,
'rebase: Rebase already triggered'
);
// Snap the rebase time to the start of this window.
lastRebaseTimestamp = nowTimestamp.sub(nowTimestamp.mod(minRebaseTimeIntervalSec)).add(
rebaseWindowOffsetSec
);
// no safe math required
epoch++;
// Get twap from uniswapv2.
(uint256 priceCumulative, uint32 blockTimestamp, uint256 twap) = getCurrentTwap();
priceCumulativeLast = priceCumulative;
blockTimestampLast = blockTimestamp;
bool inCircuitBreaker = false;
(
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
) = getNewHotpotBasePerBlock(twap);
farmHotpotBasePerBlock = newFarmHotpotBasePerBlock;
halvingCounter = newHalvingCounter;
uint256 newRedShare = getNewRedShare(twap);
// Do a bunch of things if twap is outside of threshold.
if (!withinDeviationThreshold(twap)) {
uint256 absoluteDeviationMovement = targetPrice.mul(deviationMovement).div(1e18);
// Calculates and sets the new target rate if twap is outside of threshold.
if (twap > targetPrice) {
// no safe math required
upwardCounter++;
if (downwardCounter > 0) {
downwardCounter = 0;
}
// if twap continues to go up, retargetThreshold is only effective for the first upward retarget
// and every following rebase would retarget upward until twap is within deviation threshold
if (upwardCounter >= retargetThreshold) {
targetPrice = targetPrice.add(absoluteDeviationMovement);
}
} else {
inCircuitBreaker = true;
// no safe math required
downwardCounter++;
if (upwardCounter > 0) {
upwardCounter = 0;
}
// if twap continues to go down, retargetThreshold is only effective for the first downward retarget
// and every following rebase would retarget downward until twap is within deviation threshold
if (downwardCounter >= retargetThreshold) {
targetPrice = targetPrice.sub(absoluteDeviationMovement);
}
}
} else {
upwardCounter = 0;
downwardCounter = 0;
}
masterPot.massUpdatePools();
masterPot.setHotpotBasePerBlock(newHotpotBasePerBlock);
masterPot.setRedPotShare(newRedShare);
masterPot.setCircuitBreaker(inCircuitBreaker);
}
/**
* @notice Calculates TWAP from uniswap
*
* @dev When liquidity is low, this can be manipulated by an end of block -> next block
* attack. We delay the activation of rebases 12 hours after liquidity incentives
* to reduce this attack vector. Additional there is very little supply
* to be able to manipulate this during that time period of highest vuln.
*/
function getCurrentTwap()
public
virtual
view
returns (
uint256 priceCumulative,
uint32 blockTimestamp,
uint256 twap
)
{
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestampUniswap
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulative = isToken0 ? price0Cumulative : price1Cumulative;
blockTimestamp = blockTimestampUniswap;
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// no period check as is done in isRebaseWindow
// overflow is desired, casting never truncates
// cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed
FixedPoint.uq112x112 memory priceAverage = FixedPoint.uq112x112(
uint224((priceCumulative - priceCumulativeLast) / timeElapsed)
);
// 1e30 for trading pair with 6-decimal tokens. Be ultra-cautious when changing this.
twap = FixedPoint.decode144(FixedPoint.mul(priceAverage, 1e30));
}
// Computes new tokenPerBlock based on price.
function getNewHotpotBasePerBlock(uint256 price)
public
view
returns (
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
)
{
uint256 blockElapsed = getBlockNumber().sub(masterPot.startBlock());
newHalvingCounter = blockElapsed.div(halfLife);
newFarmHotpotBasePerBlock = farmHotpotBasePerBlock;
// if new halvingCounter is larger than old one, perform halving.
if (newHalvingCounter > halvingCounter) {
newFarmHotpotBasePerBlock = newFarmHotpotBasePerBlock.div(2);
}
// computes newHotpotBasePerBlock based on targetStock2Flow.
newHotpotBasePerBlock = masterPot.hotpotBaseTotalSupply().div(
targetStock2Flow.mul(2400000)
);
// use the larger of newHotpotBasePerBlock and newFarmHotpotBasePerBlock.
newHotpotBasePerBlock = newHotpotBasePerBlock > newFarmHotpotBasePerBlock
? newHotpotBasePerBlock
: newFarmHotpotBasePerBlock;
if (price > targetPrice) {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(price).div(targetPrice);
} else {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(targetPrice).div(price);
}
}
// Computes new redShare based on price.
function getNewRedShare(uint256 price) public view returns (uint256) {
return uint256(1e24).div(price.mul(1e12).div(targetPrice).add(1e12));
}
// Check if the current price is within the deviation threshold for rebasing.
function withinDeviationThreshold(uint256 price) public view returns (bool) {
uint256 absoluteDeviationThreshold = targetPrice.mul(deviationThreshold).div(1e18);
return
(price >= targetPrice && price.sub(targetPrice) < absoluteDeviationThreshold) ||
(price < targetPrice && targetPrice.sub(price) < absoluteDeviationThreshold);
}
/**
* @notice Sets the deviation threshold fraction. If the exchange rate given by the market
* oracle is within this fractional distance from the targetPrice, then no supply
* modifications are made.
* @param _deviationThreshold The new exchange rate threshold fraction.
*/
function setDeviationThreshold(uint256 _deviationThreshold) external onlyGov {
require(_deviationThreshold > 0, 'deviationThreshold: too low');
uint256 oldDeviationThreshold = deviationThreshold;
deviationThreshold = _deviationThreshold;
emit NewDeviationThreshold(oldDeviationThreshold, _deviationThreshold);
}
function setDeviationMovement(uint256 _deviationMovement) external onlyGov {
require(_deviationMovement > 0, 'deviationMovement: too low');
uint256 oldDeviationMovement = deviationMovement;
deviationMovement = _deviationMovement;
emit NewDeviationMovement(oldDeviationMovement, _deviationMovement);
}
// Sets the retarget threshold parameter, Gov only.
function setRetargetThreshold(uint256 _retargetThreshold) external onlyGov {
require(_retargetThreshold > 0, 'retargetThreshold: too low');
retargetThreshold = _retargetThreshold;
}
// Overwrites the target stock-to-flow ratio, Gov only.
function setTargetStock2Flow(uint256 _targetStock2Flow) external onlyGov {
require(_targetStock2Flow > 0, 'targetStock2Flow: too low');
targetStock2Flow = _targetStock2Flow;
}
/**
* @notice Sets the parameters which control the timing and frequency of
* rebase operations.
* a) the minimum time period that must elapse between rebase cycles.
* b) the rebase window offset parameter.
* c) the rebase window length parameter.
* @param _minRebaseTimeIntervalSec More than this much time must pass between rebase
* operations, in seconds.
* @param _rebaseWindowOffsetSec The number of seconds from the beginning of
the rebase interval, where the rebase window begins.
* @param _rebaseWindowLengthSec The length of the rebase window in seconds.
*/
function setRebaseTimingParameters(
uint256 _minRebaseTimeIntervalSec,
uint256 _rebaseWindowOffsetSec,
uint256 _rebaseWindowLengthSec
) external onlyGov {
require(_minRebaseTimeIntervalSec > 0, 'minRebaseTimeIntervalSec: too low');
require(
_rebaseWindowOffsetSec < _minRebaseTimeIntervalSec,
'rebaseWindowOffsetSec: too high'
);
minRebaseTimeIntervalSec = _minRebaseTimeIntervalSec;
rebaseWindowOffsetSec = _rebaseWindowOffsetSec;
rebaseWindowLengthSec = _rebaseWindowLengthSec;
}
// Passthrough function to add pool.
function addPool(
uint256 _allocPoint,
IERC20 _lpToken,
bool _isRed,
bool _withUpdate
) public onlyGov {
masterPot.addPool(_allocPoint, _lpToken, _isRed, _withUpdate);
}
// Passthrough function to set pool.
function setPool(
uint256 _pid,
uint256 _allocPoint,
bool _withUpdate
) public onlyGov {
masterPot.setPool(_pid, _allocPoint, _withUpdate);
}
// Passthrough function to set tip rate.
function setTipRate(uint256 _tipRate) public onlyGov {
masterPot.setTipRate(_tipRate);
}
// Passthrough function to transfer pot ownership.
function transferPotOwnership(address newOwner) public onlyGov {
masterPot.transferPotOwnership(newOwner);
}
function getNow() public virtual view returns (uint256) {
return now;
}
function getBlockNumber() public virtual view returns (uint256) {
return block.number;
}
} | setPendingGov | function setPendingGov(address _pendingGov) external onlyGov {
address oldPendingGov = pendingGov;
pendingGov = _pendingGov;
emit NewPendingGov(oldPendingGov, _pendingGov);
}
| // sets the pendingGov | LineComment | v0.6.12+commit.27d51765 | MIT | ipfs://06c3e1b7010ded32c215d8d2b064a338aa716548f7264dc15aba4614175c048f | {
"func_code_index": [
3996,
4183
]
} | 59,651 |
||
ChefMao | contracts\ChefMao.sol | 0xfbd3749eb2ed67454850939480433e71a9f5432d | Solidity | ChefMao | contract ChefMao {
using SafeMath for uint256;
modifier onlyGov() {
require(msg.sender == gov, 'onlyGov: caller is not gov');
_;
}
// an event emitted when deviationThreshold is changed
event NewDeviationThreshold(uint256 oldDeviationThreshold, uint256 newDeviationThreshold);
// an event emitted when deviationMovement is changed
event NewDeviationMovement(uint256 oldDeviationMovement, uint256 newDeviationMovement);
// Event emitted when pendingGov is changed
event NewPendingGov(address oldPendingGov, address newPendingGov);
// Event emitted when gov is changed
event NewGov(address oldGov, address newGov);
// Governance address
address public gov;
// Pending Governance address
address public pendingGov;
// Peg target
uint256 public targetPrice;
// POT Tokens created per block at inception.
// POT's inflation will eventually be governed by targetStock2Flow.
uint256 public farmHotpotBasePerBlock;
// Halving period for Hotpot Base per block, in blocks.
uint256 public halfLife = 88888;
// targetTokenPerBlock = totalSupply / (targetStock2Flow * 2,400,000)
// 2,400,000 is ~1-year's ETH block count as of Sep 2020
// See @100trillionUSD's article below on Scarcity and S2F:
// https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
//
// Ganularity of targetStock2Flow is intentionally restricted.
uint256 public targetStock2Flow = 10; // ~10% p.a. target inflation;
// If the current price is within this fractional distance from the target, no supply
// update is performed. Fixed point number--same format as the price.
// (ie) abs(price - targetPrice) / targetPrice < deviationThreshold, then no supply change.
uint256 public deviationThreshold = 5e16; // 5%
uint256 public deviationMovement = 5e16; // 5%
// More than this much time must pass between rebase operations.
uint256 public minRebaseTimeIntervalSec = 24 hours;
// Block timestamp of last rebase operation
uint256 public lastRebaseTimestamp;
// The rebase window begins this many seconds into the minRebaseTimeInterval period.
// For example if minRebaseTimeInterval is 24hrs, it represents the time of day in seconds.
uint256 public rebaseWindowOffsetSec = 28800; // 8am/8pm UTC rebases
// The length of the time window where a rebase operation is allowed to execute, in seconds.
uint256 public rebaseWindowLengthSec = 3600; // 60 minutes
// The number of rebase cycles since inception
uint256 public epoch;
// The number of halvings since inception
uint256 public halvingCounter;
// The number of consecutive upward threshold breaching when rebasing.
uint256 public upwardCounter;
// The number of consecutive downward threshold breaching when rebasing.
uint256 public downwardCounter;
uint256 public retargetThreshold = 2; // 2 days
// rebasing is not active initially. It can be activated at T+12 hours from
// deployment time
// boolean showing rebase activation status
bool public rebasingActive;
// delays rebasing activation to facilitate liquidity
uint256 public constant rebaseDelay = 12 hours;
// Time of TWAP initialization
uint256 public timeOfTwapInit;
// pair for reserveToken <> POT
address public uniswapPair;
// last TWAP update time
uint32 public blockTimestampLast;
// last TWAP cumulative price;
uint256 public priceCumulativeLast;
// Whether or not this token is first in uniswap POT<>Reserve pair
// address of USDT:
// address of POT:
bool public isToken0 = true;
IYuanYangPot public masterPot;
constructor(
IYuanYangPot _masterPot,
address _uniswapPair,
address _gov,
uint256 _targetPrice,
bool _isToken0
) public {
masterPot = _masterPot;
farmHotpotBasePerBlock = masterPot.hotpotBasePerBlock();
uniswapPair = _uniswapPair;
gov = _gov;
targetPrice = _targetPrice;
isToken0 = _isToken0;
}
// sets the pendingGov
function setPendingGov(address _pendingGov) external onlyGov {
address oldPendingGov = pendingGov;
pendingGov = _pendingGov;
emit NewPendingGov(oldPendingGov, _pendingGov);
}
// lets msg.sender accept governance
function acceptGov() external {
require(msg.sender == pendingGov, 'acceptGov: !pending');
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
// Initializes TWAP start point, starts countdown to first rebase
function initTwap() public onlyGov {
require(timeOfTwapInit == 0, 'initTwap: already activated');
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestamp
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulativeLast = isToken0 ? price0Cumulative : price1Cumulative;
require(priceCumulativeLast > 0, 'initTwap: no trades');
blockTimestampLast = blockTimestamp;
timeOfTwapInit = blockTimestamp;
}
// @notice Activates rebasing
// @dev One way function, cannot be undone, callable by anyone
function activateRebasing() public {
require(timeOfTwapInit > 0, 'activateRebasing: twap wasnt intitiated, call init_twap()');
// cannot enable prior to end of rebaseDelay
require(getNow() >= timeOfTwapInit + rebaseDelay, 'activateRebasing: !end_delay');
rebasingActive = true;
}
// If the latest block timestamp is within the rebase time window it, returns true.
// Otherwise, returns false.
function inRebaseWindow() public view returns (bool) {
// rebasing is delayed until there is a liquid market
require(rebasingActive, 'inRebaseWindow: rebasing not active');
uint256 nowTimestamp = getNow();
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) >= rebaseWindowOffsetSec,
'inRebaseWindow: too early'
);
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) <
(rebaseWindowOffsetSec.add(rebaseWindowLengthSec)),
'inRebaseWindow: too late'
);
return true;
}
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (_totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetPrice) / targetPrice
* and targetPrice is 1e18
*/
function rebase() public {
// no possibility of reentry as this function only invoke view functions or internal functions
// or functions from master pot which also only invoke only invoke view functions or internal functions
// EOA only
// require(msg.sender == tx.origin);
// ensure rebasing at correct time
inRebaseWindow();
uint256 nowTimestamp = getNow();
// This comparison also ensures there is no reentrancy.
require(
lastRebaseTimestamp.add(minRebaseTimeIntervalSec) < nowTimestamp,
'rebase: Rebase already triggered'
);
// Snap the rebase time to the start of this window.
lastRebaseTimestamp = nowTimestamp.sub(nowTimestamp.mod(minRebaseTimeIntervalSec)).add(
rebaseWindowOffsetSec
);
// no safe math required
epoch++;
// Get twap from uniswapv2.
(uint256 priceCumulative, uint32 blockTimestamp, uint256 twap) = getCurrentTwap();
priceCumulativeLast = priceCumulative;
blockTimestampLast = blockTimestamp;
bool inCircuitBreaker = false;
(
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
) = getNewHotpotBasePerBlock(twap);
farmHotpotBasePerBlock = newFarmHotpotBasePerBlock;
halvingCounter = newHalvingCounter;
uint256 newRedShare = getNewRedShare(twap);
// Do a bunch of things if twap is outside of threshold.
if (!withinDeviationThreshold(twap)) {
uint256 absoluteDeviationMovement = targetPrice.mul(deviationMovement).div(1e18);
// Calculates and sets the new target rate if twap is outside of threshold.
if (twap > targetPrice) {
// no safe math required
upwardCounter++;
if (downwardCounter > 0) {
downwardCounter = 0;
}
// if twap continues to go up, retargetThreshold is only effective for the first upward retarget
// and every following rebase would retarget upward until twap is within deviation threshold
if (upwardCounter >= retargetThreshold) {
targetPrice = targetPrice.add(absoluteDeviationMovement);
}
} else {
inCircuitBreaker = true;
// no safe math required
downwardCounter++;
if (upwardCounter > 0) {
upwardCounter = 0;
}
// if twap continues to go down, retargetThreshold is only effective for the first downward retarget
// and every following rebase would retarget downward until twap is within deviation threshold
if (downwardCounter >= retargetThreshold) {
targetPrice = targetPrice.sub(absoluteDeviationMovement);
}
}
} else {
upwardCounter = 0;
downwardCounter = 0;
}
masterPot.massUpdatePools();
masterPot.setHotpotBasePerBlock(newHotpotBasePerBlock);
masterPot.setRedPotShare(newRedShare);
masterPot.setCircuitBreaker(inCircuitBreaker);
}
/**
* @notice Calculates TWAP from uniswap
*
* @dev When liquidity is low, this can be manipulated by an end of block -> next block
* attack. We delay the activation of rebases 12 hours after liquidity incentives
* to reduce this attack vector. Additional there is very little supply
* to be able to manipulate this during that time period of highest vuln.
*/
function getCurrentTwap()
public
virtual
view
returns (
uint256 priceCumulative,
uint32 blockTimestamp,
uint256 twap
)
{
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestampUniswap
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulative = isToken0 ? price0Cumulative : price1Cumulative;
blockTimestamp = blockTimestampUniswap;
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// no period check as is done in isRebaseWindow
// overflow is desired, casting never truncates
// cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed
FixedPoint.uq112x112 memory priceAverage = FixedPoint.uq112x112(
uint224((priceCumulative - priceCumulativeLast) / timeElapsed)
);
// 1e30 for trading pair with 6-decimal tokens. Be ultra-cautious when changing this.
twap = FixedPoint.decode144(FixedPoint.mul(priceAverage, 1e30));
}
// Computes new tokenPerBlock based on price.
function getNewHotpotBasePerBlock(uint256 price)
public
view
returns (
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
)
{
uint256 blockElapsed = getBlockNumber().sub(masterPot.startBlock());
newHalvingCounter = blockElapsed.div(halfLife);
newFarmHotpotBasePerBlock = farmHotpotBasePerBlock;
// if new halvingCounter is larger than old one, perform halving.
if (newHalvingCounter > halvingCounter) {
newFarmHotpotBasePerBlock = newFarmHotpotBasePerBlock.div(2);
}
// computes newHotpotBasePerBlock based on targetStock2Flow.
newHotpotBasePerBlock = masterPot.hotpotBaseTotalSupply().div(
targetStock2Flow.mul(2400000)
);
// use the larger of newHotpotBasePerBlock and newFarmHotpotBasePerBlock.
newHotpotBasePerBlock = newHotpotBasePerBlock > newFarmHotpotBasePerBlock
? newHotpotBasePerBlock
: newFarmHotpotBasePerBlock;
if (price > targetPrice) {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(price).div(targetPrice);
} else {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(targetPrice).div(price);
}
}
// Computes new redShare based on price.
function getNewRedShare(uint256 price) public view returns (uint256) {
return uint256(1e24).div(price.mul(1e12).div(targetPrice).add(1e12));
}
// Check if the current price is within the deviation threshold for rebasing.
function withinDeviationThreshold(uint256 price) public view returns (bool) {
uint256 absoluteDeviationThreshold = targetPrice.mul(deviationThreshold).div(1e18);
return
(price >= targetPrice && price.sub(targetPrice) < absoluteDeviationThreshold) ||
(price < targetPrice && targetPrice.sub(price) < absoluteDeviationThreshold);
}
/**
* @notice Sets the deviation threshold fraction. If the exchange rate given by the market
* oracle is within this fractional distance from the targetPrice, then no supply
* modifications are made.
* @param _deviationThreshold The new exchange rate threshold fraction.
*/
function setDeviationThreshold(uint256 _deviationThreshold) external onlyGov {
require(_deviationThreshold > 0, 'deviationThreshold: too low');
uint256 oldDeviationThreshold = deviationThreshold;
deviationThreshold = _deviationThreshold;
emit NewDeviationThreshold(oldDeviationThreshold, _deviationThreshold);
}
function setDeviationMovement(uint256 _deviationMovement) external onlyGov {
require(_deviationMovement > 0, 'deviationMovement: too low');
uint256 oldDeviationMovement = deviationMovement;
deviationMovement = _deviationMovement;
emit NewDeviationMovement(oldDeviationMovement, _deviationMovement);
}
// Sets the retarget threshold parameter, Gov only.
function setRetargetThreshold(uint256 _retargetThreshold) external onlyGov {
require(_retargetThreshold > 0, 'retargetThreshold: too low');
retargetThreshold = _retargetThreshold;
}
// Overwrites the target stock-to-flow ratio, Gov only.
function setTargetStock2Flow(uint256 _targetStock2Flow) external onlyGov {
require(_targetStock2Flow > 0, 'targetStock2Flow: too low');
targetStock2Flow = _targetStock2Flow;
}
/**
* @notice Sets the parameters which control the timing and frequency of
* rebase operations.
* a) the minimum time period that must elapse between rebase cycles.
* b) the rebase window offset parameter.
* c) the rebase window length parameter.
* @param _minRebaseTimeIntervalSec More than this much time must pass between rebase
* operations, in seconds.
* @param _rebaseWindowOffsetSec The number of seconds from the beginning of
the rebase interval, where the rebase window begins.
* @param _rebaseWindowLengthSec The length of the rebase window in seconds.
*/
function setRebaseTimingParameters(
uint256 _minRebaseTimeIntervalSec,
uint256 _rebaseWindowOffsetSec,
uint256 _rebaseWindowLengthSec
) external onlyGov {
require(_minRebaseTimeIntervalSec > 0, 'minRebaseTimeIntervalSec: too low');
require(
_rebaseWindowOffsetSec < _minRebaseTimeIntervalSec,
'rebaseWindowOffsetSec: too high'
);
minRebaseTimeIntervalSec = _minRebaseTimeIntervalSec;
rebaseWindowOffsetSec = _rebaseWindowOffsetSec;
rebaseWindowLengthSec = _rebaseWindowLengthSec;
}
// Passthrough function to add pool.
function addPool(
uint256 _allocPoint,
IERC20 _lpToken,
bool _isRed,
bool _withUpdate
) public onlyGov {
masterPot.addPool(_allocPoint, _lpToken, _isRed, _withUpdate);
}
// Passthrough function to set pool.
function setPool(
uint256 _pid,
uint256 _allocPoint,
bool _withUpdate
) public onlyGov {
masterPot.setPool(_pid, _allocPoint, _withUpdate);
}
// Passthrough function to set tip rate.
function setTipRate(uint256 _tipRate) public onlyGov {
masterPot.setTipRate(_tipRate);
}
// Passthrough function to transfer pot ownership.
function transferPotOwnership(address newOwner) public onlyGov {
masterPot.transferPotOwnership(newOwner);
}
function getNow() public virtual view returns (uint256) {
return now;
}
function getBlockNumber() public virtual view returns (uint256) {
return block.number;
}
} | acceptGov | function acceptGov() external {
require(msg.sender == pendingGov, 'acceptGov: !pending');
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
| // lets msg.sender accept governance | LineComment | v0.6.12+commit.27d51765 | MIT | ipfs://06c3e1b7010ded32c215d8d2b064a338aa716548f7264dc15aba4614175c048f | {
"func_code_index": [
4225,
4426
]
} | 59,652 |
||
ChefMao | contracts\ChefMao.sol | 0xfbd3749eb2ed67454850939480433e71a9f5432d | Solidity | ChefMao | contract ChefMao {
using SafeMath for uint256;
modifier onlyGov() {
require(msg.sender == gov, 'onlyGov: caller is not gov');
_;
}
// an event emitted when deviationThreshold is changed
event NewDeviationThreshold(uint256 oldDeviationThreshold, uint256 newDeviationThreshold);
// an event emitted when deviationMovement is changed
event NewDeviationMovement(uint256 oldDeviationMovement, uint256 newDeviationMovement);
// Event emitted when pendingGov is changed
event NewPendingGov(address oldPendingGov, address newPendingGov);
// Event emitted when gov is changed
event NewGov(address oldGov, address newGov);
// Governance address
address public gov;
// Pending Governance address
address public pendingGov;
// Peg target
uint256 public targetPrice;
// POT Tokens created per block at inception.
// POT's inflation will eventually be governed by targetStock2Flow.
uint256 public farmHotpotBasePerBlock;
// Halving period for Hotpot Base per block, in blocks.
uint256 public halfLife = 88888;
// targetTokenPerBlock = totalSupply / (targetStock2Flow * 2,400,000)
// 2,400,000 is ~1-year's ETH block count as of Sep 2020
// See @100trillionUSD's article below on Scarcity and S2F:
// https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
//
// Ganularity of targetStock2Flow is intentionally restricted.
uint256 public targetStock2Flow = 10; // ~10% p.a. target inflation;
// If the current price is within this fractional distance from the target, no supply
// update is performed. Fixed point number--same format as the price.
// (ie) abs(price - targetPrice) / targetPrice < deviationThreshold, then no supply change.
uint256 public deviationThreshold = 5e16; // 5%
uint256 public deviationMovement = 5e16; // 5%
// More than this much time must pass between rebase operations.
uint256 public minRebaseTimeIntervalSec = 24 hours;
// Block timestamp of last rebase operation
uint256 public lastRebaseTimestamp;
// The rebase window begins this many seconds into the minRebaseTimeInterval period.
// For example if minRebaseTimeInterval is 24hrs, it represents the time of day in seconds.
uint256 public rebaseWindowOffsetSec = 28800; // 8am/8pm UTC rebases
// The length of the time window where a rebase operation is allowed to execute, in seconds.
uint256 public rebaseWindowLengthSec = 3600; // 60 minutes
// The number of rebase cycles since inception
uint256 public epoch;
// The number of halvings since inception
uint256 public halvingCounter;
// The number of consecutive upward threshold breaching when rebasing.
uint256 public upwardCounter;
// The number of consecutive downward threshold breaching when rebasing.
uint256 public downwardCounter;
uint256 public retargetThreshold = 2; // 2 days
// rebasing is not active initially. It can be activated at T+12 hours from
// deployment time
// boolean showing rebase activation status
bool public rebasingActive;
// delays rebasing activation to facilitate liquidity
uint256 public constant rebaseDelay = 12 hours;
// Time of TWAP initialization
uint256 public timeOfTwapInit;
// pair for reserveToken <> POT
address public uniswapPair;
// last TWAP update time
uint32 public blockTimestampLast;
// last TWAP cumulative price;
uint256 public priceCumulativeLast;
// Whether or not this token is first in uniswap POT<>Reserve pair
// address of USDT:
// address of POT:
bool public isToken0 = true;
IYuanYangPot public masterPot;
constructor(
IYuanYangPot _masterPot,
address _uniswapPair,
address _gov,
uint256 _targetPrice,
bool _isToken0
) public {
masterPot = _masterPot;
farmHotpotBasePerBlock = masterPot.hotpotBasePerBlock();
uniswapPair = _uniswapPair;
gov = _gov;
targetPrice = _targetPrice;
isToken0 = _isToken0;
}
// sets the pendingGov
function setPendingGov(address _pendingGov) external onlyGov {
address oldPendingGov = pendingGov;
pendingGov = _pendingGov;
emit NewPendingGov(oldPendingGov, _pendingGov);
}
// lets msg.sender accept governance
function acceptGov() external {
require(msg.sender == pendingGov, 'acceptGov: !pending');
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
// Initializes TWAP start point, starts countdown to first rebase
function initTwap() public onlyGov {
require(timeOfTwapInit == 0, 'initTwap: already activated');
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestamp
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulativeLast = isToken0 ? price0Cumulative : price1Cumulative;
require(priceCumulativeLast > 0, 'initTwap: no trades');
blockTimestampLast = blockTimestamp;
timeOfTwapInit = blockTimestamp;
}
// @notice Activates rebasing
// @dev One way function, cannot be undone, callable by anyone
function activateRebasing() public {
require(timeOfTwapInit > 0, 'activateRebasing: twap wasnt intitiated, call init_twap()');
// cannot enable prior to end of rebaseDelay
require(getNow() >= timeOfTwapInit + rebaseDelay, 'activateRebasing: !end_delay');
rebasingActive = true;
}
// If the latest block timestamp is within the rebase time window it, returns true.
// Otherwise, returns false.
function inRebaseWindow() public view returns (bool) {
// rebasing is delayed until there is a liquid market
require(rebasingActive, 'inRebaseWindow: rebasing not active');
uint256 nowTimestamp = getNow();
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) >= rebaseWindowOffsetSec,
'inRebaseWindow: too early'
);
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) <
(rebaseWindowOffsetSec.add(rebaseWindowLengthSec)),
'inRebaseWindow: too late'
);
return true;
}
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (_totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetPrice) / targetPrice
* and targetPrice is 1e18
*/
function rebase() public {
// no possibility of reentry as this function only invoke view functions or internal functions
// or functions from master pot which also only invoke only invoke view functions or internal functions
// EOA only
// require(msg.sender == tx.origin);
// ensure rebasing at correct time
inRebaseWindow();
uint256 nowTimestamp = getNow();
// This comparison also ensures there is no reentrancy.
require(
lastRebaseTimestamp.add(minRebaseTimeIntervalSec) < nowTimestamp,
'rebase: Rebase already triggered'
);
// Snap the rebase time to the start of this window.
lastRebaseTimestamp = nowTimestamp.sub(nowTimestamp.mod(minRebaseTimeIntervalSec)).add(
rebaseWindowOffsetSec
);
// no safe math required
epoch++;
// Get twap from uniswapv2.
(uint256 priceCumulative, uint32 blockTimestamp, uint256 twap) = getCurrentTwap();
priceCumulativeLast = priceCumulative;
blockTimestampLast = blockTimestamp;
bool inCircuitBreaker = false;
(
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
) = getNewHotpotBasePerBlock(twap);
farmHotpotBasePerBlock = newFarmHotpotBasePerBlock;
halvingCounter = newHalvingCounter;
uint256 newRedShare = getNewRedShare(twap);
// Do a bunch of things if twap is outside of threshold.
if (!withinDeviationThreshold(twap)) {
uint256 absoluteDeviationMovement = targetPrice.mul(deviationMovement).div(1e18);
// Calculates and sets the new target rate if twap is outside of threshold.
if (twap > targetPrice) {
// no safe math required
upwardCounter++;
if (downwardCounter > 0) {
downwardCounter = 0;
}
// if twap continues to go up, retargetThreshold is only effective for the first upward retarget
// and every following rebase would retarget upward until twap is within deviation threshold
if (upwardCounter >= retargetThreshold) {
targetPrice = targetPrice.add(absoluteDeviationMovement);
}
} else {
inCircuitBreaker = true;
// no safe math required
downwardCounter++;
if (upwardCounter > 0) {
upwardCounter = 0;
}
// if twap continues to go down, retargetThreshold is only effective for the first downward retarget
// and every following rebase would retarget downward until twap is within deviation threshold
if (downwardCounter >= retargetThreshold) {
targetPrice = targetPrice.sub(absoluteDeviationMovement);
}
}
} else {
upwardCounter = 0;
downwardCounter = 0;
}
masterPot.massUpdatePools();
masterPot.setHotpotBasePerBlock(newHotpotBasePerBlock);
masterPot.setRedPotShare(newRedShare);
masterPot.setCircuitBreaker(inCircuitBreaker);
}
/**
* @notice Calculates TWAP from uniswap
*
* @dev When liquidity is low, this can be manipulated by an end of block -> next block
* attack. We delay the activation of rebases 12 hours after liquidity incentives
* to reduce this attack vector. Additional there is very little supply
* to be able to manipulate this during that time period of highest vuln.
*/
function getCurrentTwap()
public
virtual
view
returns (
uint256 priceCumulative,
uint32 blockTimestamp,
uint256 twap
)
{
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestampUniswap
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulative = isToken0 ? price0Cumulative : price1Cumulative;
blockTimestamp = blockTimestampUniswap;
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// no period check as is done in isRebaseWindow
// overflow is desired, casting never truncates
// cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed
FixedPoint.uq112x112 memory priceAverage = FixedPoint.uq112x112(
uint224((priceCumulative - priceCumulativeLast) / timeElapsed)
);
// 1e30 for trading pair with 6-decimal tokens. Be ultra-cautious when changing this.
twap = FixedPoint.decode144(FixedPoint.mul(priceAverage, 1e30));
}
// Computes new tokenPerBlock based on price.
function getNewHotpotBasePerBlock(uint256 price)
public
view
returns (
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
)
{
uint256 blockElapsed = getBlockNumber().sub(masterPot.startBlock());
newHalvingCounter = blockElapsed.div(halfLife);
newFarmHotpotBasePerBlock = farmHotpotBasePerBlock;
// if new halvingCounter is larger than old one, perform halving.
if (newHalvingCounter > halvingCounter) {
newFarmHotpotBasePerBlock = newFarmHotpotBasePerBlock.div(2);
}
// computes newHotpotBasePerBlock based on targetStock2Flow.
newHotpotBasePerBlock = masterPot.hotpotBaseTotalSupply().div(
targetStock2Flow.mul(2400000)
);
// use the larger of newHotpotBasePerBlock and newFarmHotpotBasePerBlock.
newHotpotBasePerBlock = newHotpotBasePerBlock > newFarmHotpotBasePerBlock
? newHotpotBasePerBlock
: newFarmHotpotBasePerBlock;
if (price > targetPrice) {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(price).div(targetPrice);
} else {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(targetPrice).div(price);
}
}
// Computes new redShare based on price.
function getNewRedShare(uint256 price) public view returns (uint256) {
return uint256(1e24).div(price.mul(1e12).div(targetPrice).add(1e12));
}
// Check if the current price is within the deviation threshold for rebasing.
function withinDeviationThreshold(uint256 price) public view returns (bool) {
uint256 absoluteDeviationThreshold = targetPrice.mul(deviationThreshold).div(1e18);
return
(price >= targetPrice && price.sub(targetPrice) < absoluteDeviationThreshold) ||
(price < targetPrice && targetPrice.sub(price) < absoluteDeviationThreshold);
}
/**
* @notice Sets the deviation threshold fraction. If the exchange rate given by the market
* oracle is within this fractional distance from the targetPrice, then no supply
* modifications are made.
* @param _deviationThreshold The new exchange rate threshold fraction.
*/
function setDeviationThreshold(uint256 _deviationThreshold) external onlyGov {
require(_deviationThreshold > 0, 'deviationThreshold: too low');
uint256 oldDeviationThreshold = deviationThreshold;
deviationThreshold = _deviationThreshold;
emit NewDeviationThreshold(oldDeviationThreshold, _deviationThreshold);
}
function setDeviationMovement(uint256 _deviationMovement) external onlyGov {
require(_deviationMovement > 0, 'deviationMovement: too low');
uint256 oldDeviationMovement = deviationMovement;
deviationMovement = _deviationMovement;
emit NewDeviationMovement(oldDeviationMovement, _deviationMovement);
}
// Sets the retarget threshold parameter, Gov only.
function setRetargetThreshold(uint256 _retargetThreshold) external onlyGov {
require(_retargetThreshold > 0, 'retargetThreshold: too low');
retargetThreshold = _retargetThreshold;
}
// Overwrites the target stock-to-flow ratio, Gov only.
function setTargetStock2Flow(uint256 _targetStock2Flow) external onlyGov {
require(_targetStock2Flow > 0, 'targetStock2Flow: too low');
targetStock2Flow = _targetStock2Flow;
}
/**
* @notice Sets the parameters which control the timing and frequency of
* rebase operations.
* a) the minimum time period that must elapse between rebase cycles.
* b) the rebase window offset parameter.
* c) the rebase window length parameter.
* @param _minRebaseTimeIntervalSec More than this much time must pass between rebase
* operations, in seconds.
* @param _rebaseWindowOffsetSec The number of seconds from the beginning of
the rebase interval, where the rebase window begins.
* @param _rebaseWindowLengthSec The length of the rebase window in seconds.
*/
function setRebaseTimingParameters(
uint256 _minRebaseTimeIntervalSec,
uint256 _rebaseWindowOffsetSec,
uint256 _rebaseWindowLengthSec
) external onlyGov {
require(_minRebaseTimeIntervalSec > 0, 'minRebaseTimeIntervalSec: too low');
require(
_rebaseWindowOffsetSec < _minRebaseTimeIntervalSec,
'rebaseWindowOffsetSec: too high'
);
minRebaseTimeIntervalSec = _minRebaseTimeIntervalSec;
rebaseWindowOffsetSec = _rebaseWindowOffsetSec;
rebaseWindowLengthSec = _rebaseWindowLengthSec;
}
// Passthrough function to add pool.
function addPool(
uint256 _allocPoint,
IERC20 _lpToken,
bool _isRed,
bool _withUpdate
) public onlyGov {
masterPot.addPool(_allocPoint, _lpToken, _isRed, _withUpdate);
}
// Passthrough function to set pool.
function setPool(
uint256 _pid,
uint256 _allocPoint,
bool _withUpdate
) public onlyGov {
masterPot.setPool(_pid, _allocPoint, _withUpdate);
}
// Passthrough function to set tip rate.
function setTipRate(uint256 _tipRate) public onlyGov {
masterPot.setTipRate(_tipRate);
}
// Passthrough function to transfer pot ownership.
function transferPotOwnership(address newOwner) public onlyGov {
masterPot.transferPotOwnership(newOwner);
}
function getNow() public virtual view returns (uint256) {
return now;
}
function getBlockNumber() public virtual view returns (uint256) {
return block.number;
}
} | initTwap | function initTwap() public onlyGov {
require(timeOfTwapInit == 0, 'initTwap: already activated');
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestamp
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulativeLast = isToken0 ? price0Cumulative : price1Cumulative;
require(priceCumulativeLast > 0, 'initTwap: no trades');
blockTimestampLast = blockTimestamp;
timeOfTwapInit = blockTimestamp;
}
| // Initializes TWAP start point, starts countdown to first rebase | LineComment | v0.6.12+commit.27d51765 | MIT | ipfs://06c3e1b7010ded32c215d8d2b064a338aa716548f7264dc15aba4614175c048f | {
"func_code_index": [
4497,
4971
]
} | 59,653 |
||
ChefMao | contracts\ChefMao.sol | 0xfbd3749eb2ed67454850939480433e71a9f5432d | Solidity | ChefMao | contract ChefMao {
using SafeMath for uint256;
modifier onlyGov() {
require(msg.sender == gov, 'onlyGov: caller is not gov');
_;
}
// an event emitted when deviationThreshold is changed
event NewDeviationThreshold(uint256 oldDeviationThreshold, uint256 newDeviationThreshold);
// an event emitted when deviationMovement is changed
event NewDeviationMovement(uint256 oldDeviationMovement, uint256 newDeviationMovement);
// Event emitted when pendingGov is changed
event NewPendingGov(address oldPendingGov, address newPendingGov);
// Event emitted when gov is changed
event NewGov(address oldGov, address newGov);
// Governance address
address public gov;
// Pending Governance address
address public pendingGov;
// Peg target
uint256 public targetPrice;
// POT Tokens created per block at inception.
// POT's inflation will eventually be governed by targetStock2Flow.
uint256 public farmHotpotBasePerBlock;
// Halving period for Hotpot Base per block, in blocks.
uint256 public halfLife = 88888;
// targetTokenPerBlock = totalSupply / (targetStock2Flow * 2,400,000)
// 2,400,000 is ~1-year's ETH block count as of Sep 2020
// See @100trillionUSD's article below on Scarcity and S2F:
// https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
//
// Ganularity of targetStock2Flow is intentionally restricted.
uint256 public targetStock2Flow = 10; // ~10% p.a. target inflation;
// If the current price is within this fractional distance from the target, no supply
// update is performed. Fixed point number--same format as the price.
// (ie) abs(price - targetPrice) / targetPrice < deviationThreshold, then no supply change.
uint256 public deviationThreshold = 5e16; // 5%
uint256 public deviationMovement = 5e16; // 5%
// More than this much time must pass between rebase operations.
uint256 public minRebaseTimeIntervalSec = 24 hours;
// Block timestamp of last rebase operation
uint256 public lastRebaseTimestamp;
// The rebase window begins this many seconds into the minRebaseTimeInterval period.
// For example if minRebaseTimeInterval is 24hrs, it represents the time of day in seconds.
uint256 public rebaseWindowOffsetSec = 28800; // 8am/8pm UTC rebases
// The length of the time window where a rebase operation is allowed to execute, in seconds.
uint256 public rebaseWindowLengthSec = 3600; // 60 minutes
// The number of rebase cycles since inception
uint256 public epoch;
// The number of halvings since inception
uint256 public halvingCounter;
// The number of consecutive upward threshold breaching when rebasing.
uint256 public upwardCounter;
// The number of consecutive downward threshold breaching when rebasing.
uint256 public downwardCounter;
uint256 public retargetThreshold = 2; // 2 days
// rebasing is not active initially. It can be activated at T+12 hours from
// deployment time
// boolean showing rebase activation status
bool public rebasingActive;
// delays rebasing activation to facilitate liquidity
uint256 public constant rebaseDelay = 12 hours;
// Time of TWAP initialization
uint256 public timeOfTwapInit;
// pair for reserveToken <> POT
address public uniswapPair;
// last TWAP update time
uint32 public blockTimestampLast;
// last TWAP cumulative price;
uint256 public priceCumulativeLast;
// Whether or not this token is first in uniswap POT<>Reserve pair
// address of USDT:
// address of POT:
bool public isToken0 = true;
IYuanYangPot public masterPot;
constructor(
IYuanYangPot _masterPot,
address _uniswapPair,
address _gov,
uint256 _targetPrice,
bool _isToken0
) public {
masterPot = _masterPot;
farmHotpotBasePerBlock = masterPot.hotpotBasePerBlock();
uniswapPair = _uniswapPair;
gov = _gov;
targetPrice = _targetPrice;
isToken0 = _isToken0;
}
// sets the pendingGov
function setPendingGov(address _pendingGov) external onlyGov {
address oldPendingGov = pendingGov;
pendingGov = _pendingGov;
emit NewPendingGov(oldPendingGov, _pendingGov);
}
// lets msg.sender accept governance
function acceptGov() external {
require(msg.sender == pendingGov, 'acceptGov: !pending');
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
// Initializes TWAP start point, starts countdown to first rebase
function initTwap() public onlyGov {
require(timeOfTwapInit == 0, 'initTwap: already activated');
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestamp
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulativeLast = isToken0 ? price0Cumulative : price1Cumulative;
require(priceCumulativeLast > 0, 'initTwap: no trades');
blockTimestampLast = blockTimestamp;
timeOfTwapInit = blockTimestamp;
}
// @notice Activates rebasing
// @dev One way function, cannot be undone, callable by anyone
function activateRebasing() public {
require(timeOfTwapInit > 0, 'activateRebasing: twap wasnt intitiated, call init_twap()');
// cannot enable prior to end of rebaseDelay
require(getNow() >= timeOfTwapInit + rebaseDelay, 'activateRebasing: !end_delay');
rebasingActive = true;
}
// If the latest block timestamp is within the rebase time window it, returns true.
// Otherwise, returns false.
function inRebaseWindow() public view returns (bool) {
// rebasing is delayed until there is a liquid market
require(rebasingActive, 'inRebaseWindow: rebasing not active');
uint256 nowTimestamp = getNow();
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) >= rebaseWindowOffsetSec,
'inRebaseWindow: too early'
);
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) <
(rebaseWindowOffsetSec.add(rebaseWindowLengthSec)),
'inRebaseWindow: too late'
);
return true;
}
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (_totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetPrice) / targetPrice
* and targetPrice is 1e18
*/
function rebase() public {
// no possibility of reentry as this function only invoke view functions or internal functions
// or functions from master pot which also only invoke only invoke view functions or internal functions
// EOA only
// require(msg.sender == tx.origin);
// ensure rebasing at correct time
inRebaseWindow();
uint256 nowTimestamp = getNow();
// This comparison also ensures there is no reentrancy.
require(
lastRebaseTimestamp.add(minRebaseTimeIntervalSec) < nowTimestamp,
'rebase: Rebase already triggered'
);
// Snap the rebase time to the start of this window.
lastRebaseTimestamp = nowTimestamp.sub(nowTimestamp.mod(minRebaseTimeIntervalSec)).add(
rebaseWindowOffsetSec
);
// no safe math required
epoch++;
// Get twap from uniswapv2.
(uint256 priceCumulative, uint32 blockTimestamp, uint256 twap) = getCurrentTwap();
priceCumulativeLast = priceCumulative;
blockTimestampLast = blockTimestamp;
bool inCircuitBreaker = false;
(
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
) = getNewHotpotBasePerBlock(twap);
farmHotpotBasePerBlock = newFarmHotpotBasePerBlock;
halvingCounter = newHalvingCounter;
uint256 newRedShare = getNewRedShare(twap);
// Do a bunch of things if twap is outside of threshold.
if (!withinDeviationThreshold(twap)) {
uint256 absoluteDeviationMovement = targetPrice.mul(deviationMovement).div(1e18);
// Calculates and sets the new target rate if twap is outside of threshold.
if (twap > targetPrice) {
// no safe math required
upwardCounter++;
if (downwardCounter > 0) {
downwardCounter = 0;
}
// if twap continues to go up, retargetThreshold is only effective for the first upward retarget
// and every following rebase would retarget upward until twap is within deviation threshold
if (upwardCounter >= retargetThreshold) {
targetPrice = targetPrice.add(absoluteDeviationMovement);
}
} else {
inCircuitBreaker = true;
// no safe math required
downwardCounter++;
if (upwardCounter > 0) {
upwardCounter = 0;
}
// if twap continues to go down, retargetThreshold is only effective for the first downward retarget
// and every following rebase would retarget downward until twap is within deviation threshold
if (downwardCounter >= retargetThreshold) {
targetPrice = targetPrice.sub(absoluteDeviationMovement);
}
}
} else {
upwardCounter = 0;
downwardCounter = 0;
}
masterPot.massUpdatePools();
masterPot.setHotpotBasePerBlock(newHotpotBasePerBlock);
masterPot.setRedPotShare(newRedShare);
masterPot.setCircuitBreaker(inCircuitBreaker);
}
/**
* @notice Calculates TWAP from uniswap
*
* @dev When liquidity is low, this can be manipulated by an end of block -> next block
* attack. We delay the activation of rebases 12 hours after liquidity incentives
* to reduce this attack vector. Additional there is very little supply
* to be able to manipulate this during that time period of highest vuln.
*/
function getCurrentTwap()
public
virtual
view
returns (
uint256 priceCumulative,
uint32 blockTimestamp,
uint256 twap
)
{
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestampUniswap
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulative = isToken0 ? price0Cumulative : price1Cumulative;
blockTimestamp = blockTimestampUniswap;
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// no period check as is done in isRebaseWindow
// overflow is desired, casting never truncates
// cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed
FixedPoint.uq112x112 memory priceAverage = FixedPoint.uq112x112(
uint224((priceCumulative - priceCumulativeLast) / timeElapsed)
);
// 1e30 for trading pair with 6-decimal tokens. Be ultra-cautious when changing this.
twap = FixedPoint.decode144(FixedPoint.mul(priceAverage, 1e30));
}
// Computes new tokenPerBlock based on price.
function getNewHotpotBasePerBlock(uint256 price)
public
view
returns (
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
)
{
uint256 blockElapsed = getBlockNumber().sub(masterPot.startBlock());
newHalvingCounter = blockElapsed.div(halfLife);
newFarmHotpotBasePerBlock = farmHotpotBasePerBlock;
// if new halvingCounter is larger than old one, perform halving.
if (newHalvingCounter > halvingCounter) {
newFarmHotpotBasePerBlock = newFarmHotpotBasePerBlock.div(2);
}
// computes newHotpotBasePerBlock based on targetStock2Flow.
newHotpotBasePerBlock = masterPot.hotpotBaseTotalSupply().div(
targetStock2Flow.mul(2400000)
);
// use the larger of newHotpotBasePerBlock and newFarmHotpotBasePerBlock.
newHotpotBasePerBlock = newHotpotBasePerBlock > newFarmHotpotBasePerBlock
? newHotpotBasePerBlock
: newFarmHotpotBasePerBlock;
if (price > targetPrice) {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(price).div(targetPrice);
} else {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(targetPrice).div(price);
}
}
// Computes new redShare based on price.
function getNewRedShare(uint256 price) public view returns (uint256) {
return uint256(1e24).div(price.mul(1e12).div(targetPrice).add(1e12));
}
// Check if the current price is within the deviation threshold for rebasing.
function withinDeviationThreshold(uint256 price) public view returns (bool) {
uint256 absoluteDeviationThreshold = targetPrice.mul(deviationThreshold).div(1e18);
return
(price >= targetPrice && price.sub(targetPrice) < absoluteDeviationThreshold) ||
(price < targetPrice && targetPrice.sub(price) < absoluteDeviationThreshold);
}
/**
* @notice Sets the deviation threshold fraction. If the exchange rate given by the market
* oracle is within this fractional distance from the targetPrice, then no supply
* modifications are made.
* @param _deviationThreshold The new exchange rate threshold fraction.
*/
function setDeviationThreshold(uint256 _deviationThreshold) external onlyGov {
require(_deviationThreshold > 0, 'deviationThreshold: too low');
uint256 oldDeviationThreshold = deviationThreshold;
deviationThreshold = _deviationThreshold;
emit NewDeviationThreshold(oldDeviationThreshold, _deviationThreshold);
}
function setDeviationMovement(uint256 _deviationMovement) external onlyGov {
require(_deviationMovement > 0, 'deviationMovement: too low');
uint256 oldDeviationMovement = deviationMovement;
deviationMovement = _deviationMovement;
emit NewDeviationMovement(oldDeviationMovement, _deviationMovement);
}
// Sets the retarget threshold parameter, Gov only.
function setRetargetThreshold(uint256 _retargetThreshold) external onlyGov {
require(_retargetThreshold > 0, 'retargetThreshold: too low');
retargetThreshold = _retargetThreshold;
}
// Overwrites the target stock-to-flow ratio, Gov only.
function setTargetStock2Flow(uint256 _targetStock2Flow) external onlyGov {
require(_targetStock2Flow > 0, 'targetStock2Flow: too low');
targetStock2Flow = _targetStock2Flow;
}
/**
* @notice Sets the parameters which control the timing and frequency of
* rebase operations.
* a) the minimum time period that must elapse between rebase cycles.
* b) the rebase window offset parameter.
* c) the rebase window length parameter.
* @param _minRebaseTimeIntervalSec More than this much time must pass between rebase
* operations, in seconds.
* @param _rebaseWindowOffsetSec The number of seconds from the beginning of
the rebase interval, where the rebase window begins.
* @param _rebaseWindowLengthSec The length of the rebase window in seconds.
*/
function setRebaseTimingParameters(
uint256 _minRebaseTimeIntervalSec,
uint256 _rebaseWindowOffsetSec,
uint256 _rebaseWindowLengthSec
) external onlyGov {
require(_minRebaseTimeIntervalSec > 0, 'minRebaseTimeIntervalSec: too low');
require(
_rebaseWindowOffsetSec < _minRebaseTimeIntervalSec,
'rebaseWindowOffsetSec: too high'
);
minRebaseTimeIntervalSec = _minRebaseTimeIntervalSec;
rebaseWindowOffsetSec = _rebaseWindowOffsetSec;
rebaseWindowLengthSec = _rebaseWindowLengthSec;
}
// Passthrough function to add pool.
function addPool(
uint256 _allocPoint,
IERC20 _lpToken,
bool _isRed,
bool _withUpdate
) public onlyGov {
masterPot.addPool(_allocPoint, _lpToken, _isRed, _withUpdate);
}
// Passthrough function to set pool.
function setPool(
uint256 _pid,
uint256 _allocPoint,
bool _withUpdate
) public onlyGov {
masterPot.setPool(_pid, _allocPoint, _withUpdate);
}
// Passthrough function to set tip rate.
function setTipRate(uint256 _tipRate) public onlyGov {
masterPot.setTipRate(_tipRate);
}
// Passthrough function to transfer pot ownership.
function transferPotOwnership(address newOwner) public onlyGov {
masterPot.transferPotOwnership(newOwner);
}
function getNow() public virtual view returns (uint256) {
return now;
}
function getBlockNumber() public virtual view returns (uint256) {
return block.number;
}
} | activateRebasing | function activateRebasing() public {
require(timeOfTwapInit > 0, 'activateRebasing: twap wasnt intitiated, call init_twap()');
// cannot enable prior to end of rebaseDelay
require(getNow() >= timeOfTwapInit + rebaseDelay, 'activateRebasing: !end_delay');
rebasingActive = true;
}
| // @notice Activates rebasing
// @dev One way function, cannot be undone, callable by anyone | LineComment | v0.6.12+commit.27d51765 | MIT | ipfs://06c3e1b7010ded32c215d8d2b064a338aa716548f7264dc15aba4614175c048f | {
"func_code_index": [
5071,
5368
]
} | 59,654 |
||
ChefMao | contracts\ChefMao.sol | 0xfbd3749eb2ed67454850939480433e71a9f5432d | Solidity | ChefMao | contract ChefMao {
using SafeMath for uint256;
modifier onlyGov() {
require(msg.sender == gov, 'onlyGov: caller is not gov');
_;
}
// an event emitted when deviationThreshold is changed
event NewDeviationThreshold(uint256 oldDeviationThreshold, uint256 newDeviationThreshold);
// an event emitted when deviationMovement is changed
event NewDeviationMovement(uint256 oldDeviationMovement, uint256 newDeviationMovement);
// Event emitted when pendingGov is changed
event NewPendingGov(address oldPendingGov, address newPendingGov);
// Event emitted when gov is changed
event NewGov(address oldGov, address newGov);
// Governance address
address public gov;
// Pending Governance address
address public pendingGov;
// Peg target
uint256 public targetPrice;
// POT Tokens created per block at inception.
// POT's inflation will eventually be governed by targetStock2Flow.
uint256 public farmHotpotBasePerBlock;
// Halving period for Hotpot Base per block, in blocks.
uint256 public halfLife = 88888;
// targetTokenPerBlock = totalSupply / (targetStock2Flow * 2,400,000)
// 2,400,000 is ~1-year's ETH block count as of Sep 2020
// See @100trillionUSD's article below on Scarcity and S2F:
// https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
//
// Ganularity of targetStock2Flow is intentionally restricted.
uint256 public targetStock2Flow = 10; // ~10% p.a. target inflation;
// If the current price is within this fractional distance from the target, no supply
// update is performed. Fixed point number--same format as the price.
// (ie) abs(price - targetPrice) / targetPrice < deviationThreshold, then no supply change.
uint256 public deviationThreshold = 5e16; // 5%
uint256 public deviationMovement = 5e16; // 5%
// More than this much time must pass between rebase operations.
uint256 public minRebaseTimeIntervalSec = 24 hours;
// Block timestamp of last rebase operation
uint256 public lastRebaseTimestamp;
// The rebase window begins this many seconds into the minRebaseTimeInterval period.
// For example if minRebaseTimeInterval is 24hrs, it represents the time of day in seconds.
uint256 public rebaseWindowOffsetSec = 28800; // 8am/8pm UTC rebases
// The length of the time window where a rebase operation is allowed to execute, in seconds.
uint256 public rebaseWindowLengthSec = 3600; // 60 minutes
// The number of rebase cycles since inception
uint256 public epoch;
// The number of halvings since inception
uint256 public halvingCounter;
// The number of consecutive upward threshold breaching when rebasing.
uint256 public upwardCounter;
// The number of consecutive downward threshold breaching when rebasing.
uint256 public downwardCounter;
uint256 public retargetThreshold = 2; // 2 days
// rebasing is not active initially. It can be activated at T+12 hours from
// deployment time
// boolean showing rebase activation status
bool public rebasingActive;
// delays rebasing activation to facilitate liquidity
uint256 public constant rebaseDelay = 12 hours;
// Time of TWAP initialization
uint256 public timeOfTwapInit;
// pair for reserveToken <> POT
address public uniswapPair;
// last TWAP update time
uint32 public blockTimestampLast;
// last TWAP cumulative price;
uint256 public priceCumulativeLast;
// Whether or not this token is first in uniswap POT<>Reserve pair
// address of USDT:
// address of POT:
bool public isToken0 = true;
IYuanYangPot public masterPot;
constructor(
IYuanYangPot _masterPot,
address _uniswapPair,
address _gov,
uint256 _targetPrice,
bool _isToken0
) public {
masterPot = _masterPot;
farmHotpotBasePerBlock = masterPot.hotpotBasePerBlock();
uniswapPair = _uniswapPair;
gov = _gov;
targetPrice = _targetPrice;
isToken0 = _isToken0;
}
// sets the pendingGov
function setPendingGov(address _pendingGov) external onlyGov {
address oldPendingGov = pendingGov;
pendingGov = _pendingGov;
emit NewPendingGov(oldPendingGov, _pendingGov);
}
// lets msg.sender accept governance
function acceptGov() external {
require(msg.sender == pendingGov, 'acceptGov: !pending');
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
// Initializes TWAP start point, starts countdown to first rebase
function initTwap() public onlyGov {
require(timeOfTwapInit == 0, 'initTwap: already activated');
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestamp
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulativeLast = isToken0 ? price0Cumulative : price1Cumulative;
require(priceCumulativeLast > 0, 'initTwap: no trades');
blockTimestampLast = blockTimestamp;
timeOfTwapInit = blockTimestamp;
}
// @notice Activates rebasing
// @dev One way function, cannot be undone, callable by anyone
function activateRebasing() public {
require(timeOfTwapInit > 0, 'activateRebasing: twap wasnt intitiated, call init_twap()');
// cannot enable prior to end of rebaseDelay
require(getNow() >= timeOfTwapInit + rebaseDelay, 'activateRebasing: !end_delay');
rebasingActive = true;
}
// If the latest block timestamp is within the rebase time window it, returns true.
// Otherwise, returns false.
function inRebaseWindow() public view returns (bool) {
// rebasing is delayed until there is a liquid market
require(rebasingActive, 'inRebaseWindow: rebasing not active');
uint256 nowTimestamp = getNow();
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) >= rebaseWindowOffsetSec,
'inRebaseWindow: too early'
);
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) <
(rebaseWindowOffsetSec.add(rebaseWindowLengthSec)),
'inRebaseWindow: too late'
);
return true;
}
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (_totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetPrice) / targetPrice
* and targetPrice is 1e18
*/
function rebase() public {
// no possibility of reentry as this function only invoke view functions or internal functions
// or functions from master pot which also only invoke only invoke view functions or internal functions
// EOA only
// require(msg.sender == tx.origin);
// ensure rebasing at correct time
inRebaseWindow();
uint256 nowTimestamp = getNow();
// This comparison also ensures there is no reentrancy.
require(
lastRebaseTimestamp.add(minRebaseTimeIntervalSec) < nowTimestamp,
'rebase: Rebase already triggered'
);
// Snap the rebase time to the start of this window.
lastRebaseTimestamp = nowTimestamp.sub(nowTimestamp.mod(minRebaseTimeIntervalSec)).add(
rebaseWindowOffsetSec
);
// no safe math required
epoch++;
// Get twap from uniswapv2.
(uint256 priceCumulative, uint32 blockTimestamp, uint256 twap) = getCurrentTwap();
priceCumulativeLast = priceCumulative;
blockTimestampLast = blockTimestamp;
bool inCircuitBreaker = false;
(
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
) = getNewHotpotBasePerBlock(twap);
farmHotpotBasePerBlock = newFarmHotpotBasePerBlock;
halvingCounter = newHalvingCounter;
uint256 newRedShare = getNewRedShare(twap);
// Do a bunch of things if twap is outside of threshold.
if (!withinDeviationThreshold(twap)) {
uint256 absoluteDeviationMovement = targetPrice.mul(deviationMovement).div(1e18);
// Calculates and sets the new target rate if twap is outside of threshold.
if (twap > targetPrice) {
// no safe math required
upwardCounter++;
if (downwardCounter > 0) {
downwardCounter = 0;
}
// if twap continues to go up, retargetThreshold is only effective for the first upward retarget
// and every following rebase would retarget upward until twap is within deviation threshold
if (upwardCounter >= retargetThreshold) {
targetPrice = targetPrice.add(absoluteDeviationMovement);
}
} else {
inCircuitBreaker = true;
// no safe math required
downwardCounter++;
if (upwardCounter > 0) {
upwardCounter = 0;
}
// if twap continues to go down, retargetThreshold is only effective for the first downward retarget
// and every following rebase would retarget downward until twap is within deviation threshold
if (downwardCounter >= retargetThreshold) {
targetPrice = targetPrice.sub(absoluteDeviationMovement);
}
}
} else {
upwardCounter = 0;
downwardCounter = 0;
}
masterPot.massUpdatePools();
masterPot.setHotpotBasePerBlock(newHotpotBasePerBlock);
masterPot.setRedPotShare(newRedShare);
masterPot.setCircuitBreaker(inCircuitBreaker);
}
/**
* @notice Calculates TWAP from uniswap
*
* @dev When liquidity is low, this can be manipulated by an end of block -> next block
* attack. We delay the activation of rebases 12 hours after liquidity incentives
* to reduce this attack vector. Additional there is very little supply
* to be able to manipulate this during that time period of highest vuln.
*/
function getCurrentTwap()
public
virtual
view
returns (
uint256 priceCumulative,
uint32 blockTimestamp,
uint256 twap
)
{
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestampUniswap
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulative = isToken0 ? price0Cumulative : price1Cumulative;
blockTimestamp = blockTimestampUniswap;
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// no period check as is done in isRebaseWindow
// overflow is desired, casting never truncates
// cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed
FixedPoint.uq112x112 memory priceAverage = FixedPoint.uq112x112(
uint224((priceCumulative - priceCumulativeLast) / timeElapsed)
);
// 1e30 for trading pair with 6-decimal tokens. Be ultra-cautious when changing this.
twap = FixedPoint.decode144(FixedPoint.mul(priceAverage, 1e30));
}
// Computes new tokenPerBlock based on price.
function getNewHotpotBasePerBlock(uint256 price)
public
view
returns (
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
)
{
uint256 blockElapsed = getBlockNumber().sub(masterPot.startBlock());
newHalvingCounter = blockElapsed.div(halfLife);
newFarmHotpotBasePerBlock = farmHotpotBasePerBlock;
// if new halvingCounter is larger than old one, perform halving.
if (newHalvingCounter > halvingCounter) {
newFarmHotpotBasePerBlock = newFarmHotpotBasePerBlock.div(2);
}
// computes newHotpotBasePerBlock based on targetStock2Flow.
newHotpotBasePerBlock = masterPot.hotpotBaseTotalSupply().div(
targetStock2Flow.mul(2400000)
);
// use the larger of newHotpotBasePerBlock and newFarmHotpotBasePerBlock.
newHotpotBasePerBlock = newHotpotBasePerBlock > newFarmHotpotBasePerBlock
? newHotpotBasePerBlock
: newFarmHotpotBasePerBlock;
if (price > targetPrice) {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(price).div(targetPrice);
} else {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(targetPrice).div(price);
}
}
// Computes new redShare based on price.
function getNewRedShare(uint256 price) public view returns (uint256) {
return uint256(1e24).div(price.mul(1e12).div(targetPrice).add(1e12));
}
// Check if the current price is within the deviation threshold for rebasing.
function withinDeviationThreshold(uint256 price) public view returns (bool) {
uint256 absoluteDeviationThreshold = targetPrice.mul(deviationThreshold).div(1e18);
return
(price >= targetPrice && price.sub(targetPrice) < absoluteDeviationThreshold) ||
(price < targetPrice && targetPrice.sub(price) < absoluteDeviationThreshold);
}
/**
* @notice Sets the deviation threshold fraction. If the exchange rate given by the market
* oracle is within this fractional distance from the targetPrice, then no supply
* modifications are made.
* @param _deviationThreshold The new exchange rate threshold fraction.
*/
function setDeviationThreshold(uint256 _deviationThreshold) external onlyGov {
require(_deviationThreshold > 0, 'deviationThreshold: too low');
uint256 oldDeviationThreshold = deviationThreshold;
deviationThreshold = _deviationThreshold;
emit NewDeviationThreshold(oldDeviationThreshold, _deviationThreshold);
}
function setDeviationMovement(uint256 _deviationMovement) external onlyGov {
require(_deviationMovement > 0, 'deviationMovement: too low');
uint256 oldDeviationMovement = deviationMovement;
deviationMovement = _deviationMovement;
emit NewDeviationMovement(oldDeviationMovement, _deviationMovement);
}
// Sets the retarget threshold parameter, Gov only.
function setRetargetThreshold(uint256 _retargetThreshold) external onlyGov {
require(_retargetThreshold > 0, 'retargetThreshold: too low');
retargetThreshold = _retargetThreshold;
}
// Overwrites the target stock-to-flow ratio, Gov only.
function setTargetStock2Flow(uint256 _targetStock2Flow) external onlyGov {
require(_targetStock2Flow > 0, 'targetStock2Flow: too low');
targetStock2Flow = _targetStock2Flow;
}
/**
* @notice Sets the parameters which control the timing and frequency of
* rebase operations.
* a) the minimum time period that must elapse between rebase cycles.
* b) the rebase window offset parameter.
* c) the rebase window length parameter.
* @param _minRebaseTimeIntervalSec More than this much time must pass between rebase
* operations, in seconds.
* @param _rebaseWindowOffsetSec The number of seconds from the beginning of
the rebase interval, where the rebase window begins.
* @param _rebaseWindowLengthSec The length of the rebase window in seconds.
*/
function setRebaseTimingParameters(
uint256 _minRebaseTimeIntervalSec,
uint256 _rebaseWindowOffsetSec,
uint256 _rebaseWindowLengthSec
) external onlyGov {
require(_minRebaseTimeIntervalSec > 0, 'minRebaseTimeIntervalSec: too low');
require(
_rebaseWindowOffsetSec < _minRebaseTimeIntervalSec,
'rebaseWindowOffsetSec: too high'
);
minRebaseTimeIntervalSec = _minRebaseTimeIntervalSec;
rebaseWindowOffsetSec = _rebaseWindowOffsetSec;
rebaseWindowLengthSec = _rebaseWindowLengthSec;
}
// Passthrough function to add pool.
function addPool(
uint256 _allocPoint,
IERC20 _lpToken,
bool _isRed,
bool _withUpdate
) public onlyGov {
masterPot.addPool(_allocPoint, _lpToken, _isRed, _withUpdate);
}
// Passthrough function to set pool.
function setPool(
uint256 _pid,
uint256 _allocPoint,
bool _withUpdate
) public onlyGov {
masterPot.setPool(_pid, _allocPoint, _withUpdate);
}
// Passthrough function to set tip rate.
function setTipRate(uint256 _tipRate) public onlyGov {
masterPot.setTipRate(_tipRate);
}
// Passthrough function to transfer pot ownership.
function transferPotOwnership(address newOwner) public onlyGov {
masterPot.transferPotOwnership(newOwner);
}
function getNow() public virtual view returns (uint256) {
return now;
}
function getBlockNumber() public virtual view returns (uint256) {
return block.number;
}
} | inRebaseWindow | function inRebaseWindow() public view returns (bool) {
// rebasing is delayed until there is a liquid market
require(rebasingActive, 'inRebaseWindow: rebasing not active');
uint256 nowTimestamp = getNow();
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) >= rebaseWindowOffsetSec,
'inRebaseWindow: too early'
);
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) <
(rebaseWindowOffsetSec.add(rebaseWindowLengthSec)),
'inRebaseWindow: too late'
);
return true;
}
| // If the latest block timestamp is within the rebase time window it, returns true.
// Otherwise, returns false. | LineComment | v0.6.12+commit.27d51765 | MIT | ipfs://06c3e1b7010ded32c215d8d2b064a338aa716548f7264dc15aba4614175c048f | {
"func_code_index": [
5488,
6002
]
} | 59,655 |
||
ChefMao | contracts\ChefMao.sol | 0xfbd3749eb2ed67454850939480433e71a9f5432d | Solidity | ChefMao | contract ChefMao {
using SafeMath for uint256;
modifier onlyGov() {
require(msg.sender == gov, 'onlyGov: caller is not gov');
_;
}
// an event emitted when deviationThreshold is changed
event NewDeviationThreshold(uint256 oldDeviationThreshold, uint256 newDeviationThreshold);
// an event emitted when deviationMovement is changed
event NewDeviationMovement(uint256 oldDeviationMovement, uint256 newDeviationMovement);
// Event emitted when pendingGov is changed
event NewPendingGov(address oldPendingGov, address newPendingGov);
// Event emitted when gov is changed
event NewGov(address oldGov, address newGov);
// Governance address
address public gov;
// Pending Governance address
address public pendingGov;
// Peg target
uint256 public targetPrice;
// POT Tokens created per block at inception.
// POT's inflation will eventually be governed by targetStock2Flow.
uint256 public farmHotpotBasePerBlock;
// Halving period for Hotpot Base per block, in blocks.
uint256 public halfLife = 88888;
// targetTokenPerBlock = totalSupply / (targetStock2Flow * 2,400,000)
// 2,400,000 is ~1-year's ETH block count as of Sep 2020
// See @100trillionUSD's article below on Scarcity and S2F:
// https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
//
// Ganularity of targetStock2Flow is intentionally restricted.
uint256 public targetStock2Flow = 10; // ~10% p.a. target inflation;
// If the current price is within this fractional distance from the target, no supply
// update is performed. Fixed point number--same format as the price.
// (ie) abs(price - targetPrice) / targetPrice < deviationThreshold, then no supply change.
uint256 public deviationThreshold = 5e16; // 5%
uint256 public deviationMovement = 5e16; // 5%
// More than this much time must pass between rebase operations.
uint256 public minRebaseTimeIntervalSec = 24 hours;
// Block timestamp of last rebase operation
uint256 public lastRebaseTimestamp;
// The rebase window begins this many seconds into the minRebaseTimeInterval period.
// For example if minRebaseTimeInterval is 24hrs, it represents the time of day in seconds.
uint256 public rebaseWindowOffsetSec = 28800; // 8am/8pm UTC rebases
// The length of the time window where a rebase operation is allowed to execute, in seconds.
uint256 public rebaseWindowLengthSec = 3600; // 60 minutes
// The number of rebase cycles since inception
uint256 public epoch;
// The number of halvings since inception
uint256 public halvingCounter;
// The number of consecutive upward threshold breaching when rebasing.
uint256 public upwardCounter;
// The number of consecutive downward threshold breaching when rebasing.
uint256 public downwardCounter;
uint256 public retargetThreshold = 2; // 2 days
// rebasing is not active initially. It can be activated at T+12 hours from
// deployment time
// boolean showing rebase activation status
bool public rebasingActive;
// delays rebasing activation to facilitate liquidity
uint256 public constant rebaseDelay = 12 hours;
// Time of TWAP initialization
uint256 public timeOfTwapInit;
// pair for reserveToken <> POT
address public uniswapPair;
// last TWAP update time
uint32 public blockTimestampLast;
// last TWAP cumulative price;
uint256 public priceCumulativeLast;
// Whether or not this token is first in uniswap POT<>Reserve pair
// address of USDT:
// address of POT:
bool public isToken0 = true;
IYuanYangPot public masterPot;
constructor(
IYuanYangPot _masterPot,
address _uniswapPair,
address _gov,
uint256 _targetPrice,
bool _isToken0
) public {
masterPot = _masterPot;
farmHotpotBasePerBlock = masterPot.hotpotBasePerBlock();
uniswapPair = _uniswapPair;
gov = _gov;
targetPrice = _targetPrice;
isToken0 = _isToken0;
}
// sets the pendingGov
function setPendingGov(address _pendingGov) external onlyGov {
address oldPendingGov = pendingGov;
pendingGov = _pendingGov;
emit NewPendingGov(oldPendingGov, _pendingGov);
}
// lets msg.sender accept governance
function acceptGov() external {
require(msg.sender == pendingGov, 'acceptGov: !pending');
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
// Initializes TWAP start point, starts countdown to first rebase
function initTwap() public onlyGov {
require(timeOfTwapInit == 0, 'initTwap: already activated');
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestamp
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulativeLast = isToken0 ? price0Cumulative : price1Cumulative;
require(priceCumulativeLast > 0, 'initTwap: no trades');
blockTimestampLast = blockTimestamp;
timeOfTwapInit = blockTimestamp;
}
// @notice Activates rebasing
// @dev One way function, cannot be undone, callable by anyone
function activateRebasing() public {
require(timeOfTwapInit > 0, 'activateRebasing: twap wasnt intitiated, call init_twap()');
// cannot enable prior to end of rebaseDelay
require(getNow() >= timeOfTwapInit + rebaseDelay, 'activateRebasing: !end_delay');
rebasingActive = true;
}
// If the latest block timestamp is within the rebase time window it, returns true.
// Otherwise, returns false.
function inRebaseWindow() public view returns (bool) {
// rebasing is delayed until there is a liquid market
require(rebasingActive, 'inRebaseWindow: rebasing not active');
uint256 nowTimestamp = getNow();
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) >= rebaseWindowOffsetSec,
'inRebaseWindow: too early'
);
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) <
(rebaseWindowOffsetSec.add(rebaseWindowLengthSec)),
'inRebaseWindow: too late'
);
return true;
}
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (_totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetPrice) / targetPrice
* and targetPrice is 1e18
*/
function rebase() public {
// no possibility of reentry as this function only invoke view functions or internal functions
// or functions from master pot which also only invoke only invoke view functions or internal functions
// EOA only
// require(msg.sender == tx.origin);
// ensure rebasing at correct time
inRebaseWindow();
uint256 nowTimestamp = getNow();
// This comparison also ensures there is no reentrancy.
require(
lastRebaseTimestamp.add(minRebaseTimeIntervalSec) < nowTimestamp,
'rebase: Rebase already triggered'
);
// Snap the rebase time to the start of this window.
lastRebaseTimestamp = nowTimestamp.sub(nowTimestamp.mod(minRebaseTimeIntervalSec)).add(
rebaseWindowOffsetSec
);
// no safe math required
epoch++;
// Get twap from uniswapv2.
(uint256 priceCumulative, uint32 blockTimestamp, uint256 twap) = getCurrentTwap();
priceCumulativeLast = priceCumulative;
blockTimestampLast = blockTimestamp;
bool inCircuitBreaker = false;
(
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
) = getNewHotpotBasePerBlock(twap);
farmHotpotBasePerBlock = newFarmHotpotBasePerBlock;
halvingCounter = newHalvingCounter;
uint256 newRedShare = getNewRedShare(twap);
// Do a bunch of things if twap is outside of threshold.
if (!withinDeviationThreshold(twap)) {
uint256 absoluteDeviationMovement = targetPrice.mul(deviationMovement).div(1e18);
// Calculates and sets the new target rate if twap is outside of threshold.
if (twap > targetPrice) {
// no safe math required
upwardCounter++;
if (downwardCounter > 0) {
downwardCounter = 0;
}
// if twap continues to go up, retargetThreshold is only effective for the first upward retarget
// and every following rebase would retarget upward until twap is within deviation threshold
if (upwardCounter >= retargetThreshold) {
targetPrice = targetPrice.add(absoluteDeviationMovement);
}
} else {
inCircuitBreaker = true;
// no safe math required
downwardCounter++;
if (upwardCounter > 0) {
upwardCounter = 0;
}
// if twap continues to go down, retargetThreshold is only effective for the first downward retarget
// and every following rebase would retarget downward until twap is within deviation threshold
if (downwardCounter >= retargetThreshold) {
targetPrice = targetPrice.sub(absoluteDeviationMovement);
}
}
} else {
upwardCounter = 0;
downwardCounter = 0;
}
masterPot.massUpdatePools();
masterPot.setHotpotBasePerBlock(newHotpotBasePerBlock);
masterPot.setRedPotShare(newRedShare);
masterPot.setCircuitBreaker(inCircuitBreaker);
}
/**
* @notice Calculates TWAP from uniswap
*
* @dev When liquidity is low, this can be manipulated by an end of block -> next block
* attack. We delay the activation of rebases 12 hours after liquidity incentives
* to reduce this attack vector. Additional there is very little supply
* to be able to manipulate this during that time period of highest vuln.
*/
function getCurrentTwap()
public
virtual
view
returns (
uint256 priceCumulative,
uint32 blockTimestamp,
uint256 twap
)
{
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestampUniswap
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulative = isToken0 ? price0Cumulative : price1Cumulative;
blockTimestamp = blockTimestampUniswap;
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// no period check as is done in isRebaseWindow
// overflow is desired, casting never truncates
// cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed
FixedPoint.uq112x112 memory priceAverage = FixedPoint.uq112x112(
uint224((priceCumulative - priceCumulativeLast) / timeElapsed)
);
// 1e30 for trading pair with 6-decimal tokens. Be ultra-cautious when changing this.
twap = FixedPoint.decode144(FixedPoint.mul(priceAverage, 1e30));
}
// Computes new tokenPerBlock based on price.
function getNewHotpotBasePerBlock(uint256 price)
public
view
returns (
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
)
{
uint256 blockElapsed = getBlockNumber().sub(masterPot.startBlock());
newHalvingCounter = blockElapsed.div(halfLife);
newFarmHotpotBasePerBlock = farmHotpotBasePerBlock;
// if new halvingCounter is larger than old one, perform halving.
if (newHalvingCounter > halvingCounter) {
newFarmHotpotBasePerBlock = newFarmHotpotBasePerBlock.div(2);
}
// computes newHotpotBasePerBlock based on targetStock2Flow.
newHotpotBasePerBlock = masterPot.hotpotBaseTotalSupply().div(
targetStock2Flow.mul(2400000)
);
// use the larger of newHotpotBasePerBlock and newFarmHotpotBasePerBlock.
newHotpotBasePerBlock = newHotpotBasePerBlock > newFarmHotpotBasePerBlock
? newHotpotBasePerBlock
: newFarmHotpotBasePerBlock;
if (price > targetPrice) {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(price).div(targetPrice);
} else {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(targetPrice).div(price);
}
}
// Computes new redShare based on price.
function getNewRedShare(uint256 price) public view returns (uint256) {
return uint256(1e24).div(price.mul(1e12).div(targetPrice).add(1e12));
}
// Check if the current price is within the deviation threshold for rebasing.
function withinDeviationThreshold(uint256 price) public view returns (bool) {
uint256 absoluteDeviationThreshold = targetPrice.mul(deviationThreshold).div(1e18);
return
(price >= targetPrice && price.sub(targetPrice) < absoluteDeviationThreshold) ||
(price < targetPrice && targetPrice.sub(price) < absoluteDeviationThreshold);
}
/**
* @notice Sets the deviation threshold fraction. If the exchange rate given by the market
* oracle is within this fractional distance from the targetPrice, then no supply
* modifications are made.
* @param _deviationThreshold The new exchange rate threshold fraction.
*/
function setDeviationThreshold(uint256 _deviationThreshold) external onlyGov {
require(_deviationThreshold > 0, 'deviationThreshold: too low');
uint256 oldDeviationThreshold = deviationThreshold;
deviationThreshold = _deviationThreshold;
emit NewDeviationThreshold(oldDeviationThreshold, _deviationThreshold);
}
function setDeviationMovement(uint256 _deviationMovement) external onlyGov {
require(_deviationMovement > 0, 'deviationMovement: too low');
uint256 oldDeviationMovement = deviationMovement;
deviationMovement = _deviationMovement;
emit NewDeviationMovement(oldDeviationMovement, _deviationMovement);
}
// Sets the retarget threshold parameter, Gov only.
function setRetargetThreshold(uint256 _retargetThreshold) external onlyGov {
require(_retargetThreshold > 0, 'retargetThreshold: too low');
retargetThreshold = _retargetThreshold;
}
// Overwrites the target stock-to-flow ratio, Gov only.
function setTargetStock2Flow(uint256 _targetStock2Flow) external onlyGov {
require(_targetStock2Flow > 0, 'targetStock2Flow: too low');
targetStock2Flow = _targetStock2Flow;
}
/**
* @notice Sets the parameters which control the timing and frequency of
* rebase operations.
* a) the minimum time period that must elapse between rebase cycles.
* b) the rebase window offset parameter.
* c) the rebase window length parameter.
* @param _minRebaseTimeIntervalSec More than this much time must pass between rebase
* operations, in seconds.
* @param _rebaseWindowOffsetSec The number of seconds from the beginning of
the rebase interval, where the rebase window begins.
* @param _rebaseWindowLengthSec The length of the rebase window in seconds.
*/
function setRebaseTimingParameters(
uint256 _minRebaseTimeIntervalSec,
uint256 _rebaseWindowOffsetSec,
uint256 _rebaseWindowLengthSec
) external onlyGov {
require(_minRebaseTimeIntervalSec > 0, 'minRebaseTimeIntervalSec: too low');
require(
_rebaseWindowOffsetSec < _minRebaseTimeIntervalSec,
'rebaseWindowOffsetSec: too high'
);
minRebaseTimeIntervalSec = _minRebaseTimeIntervalSec;
rebaseWindowOffsetSec = _rebaseWindowOffsetSec;
rebaseWindowLengthSec = _rebaseWindowLengthSec;
}
// Passthrough function to add pool.
function addPool(
uint256 _allocPoint,
IERC20 _lpToken,
bool _isRed,
bool _withUpdate
) public onlyGov {
masterPot.addPool(_allocPoint, _lpToken, _isRed, _withUpdate);
}
// Passthrough function to set pool.
function setPool(
uint256 _pid,
uint256 _allocPoint,
bool _withUpdate
) public onlyGov {
masterPot.setPool(_pid, _allocPoint, _withUpdate);
}
// Passthrough function to set tip rate.
function setTipRate(uint256 _tipRate) public onlyGov {
masterPot.setTipRate(_tipRate);
}
// Passthrough function to transfer pot ownership.
function transferPotOwnership(address newOwner) public onlyGov {
masterPot.transferPotOwnership(newOwner);
}
function getNow() public virtual view returns (uint256) {
return now;
}
function getBlockNumber() public virtual view returns (uint256) {
return block.number;
}
} | rebase | function rebase() public {
// no possibility of reentry as this function only invoke view functions or internal functions
// or functions from master pot which also only invoke only invoke view functions or internal functions
// EOA only
// require(msg.sender == tx.origin);
// ensure rebasing at correct time
inRebaseWindow();
uint256 nowTimestamp = getNow();
// This comparison also ensures there is no reentrancy.
require(
lastRebaseTimestamp.add(minRebaseTimeIntervalSec) < nowTimestamp,
'rebase: Rebase already triggered'
);
// Snap the rebase time to the start of this window.
lastRebaseTimestamp = nowTimestamp.sub(nowTimestamp.mod(minRebaseTimeIntervalSec)).add(
rebaseWindowOffsetSec
);
// no safe math required
epoch++;
// Get twap from uniswapv2.
(uint256 priceCumulative, uint32 blockTimestamp, uint256 twap) = getCurrentTwap();
priceCumulativeLast = priceCumulative;
blockTimestampLast = blockTimestamp;
bool inCircuitBreaker = false;
(
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
) = getNewHotpotBasePerBlock(twap);
farmHotpotBasePerBlock = newFarmHotpotBasePerBlock;
halvingCounter = newHalvingCounter;
uint256 newRedShare = getNewRedShare(twap);
// Do a bunch of things if twap is outside of threshold.
if (!withinDeviationThreshold(twap)) {
uint256 absoluteDeviationMovement = targetPrice.mul(deviationMovement).div(1e18);
// Calculates and sets the new target rate if twap is outside of threshold.
if (twap > targetPrice) {
// no safe math required
upwardCounter++;
if (downwardCounter > 0) {
downwardCounter = 0;
}
// if twap continues to go up, retargetThreshold is only effective for the first upward retarget
// and every following rebase would retarget upward until twap is within deviation threshold
if (upwardCounter >= retargetThreshold) {
targetPrice = targetPrice.add(absoluteDeviationMovement);
}
} else {
inCircuitBreaker = true;
// no safe math required
downwardCounter++;
if (upwardCounter > 0) {
upwardCounter = 0;
}
// if twap continues to go down, retargetThreshold is only effective for the first downward retarget
// and every following rebase would retarget downward until twap is within deviation threshold
if (downwardCounter >= retargetThreshold) {
targetPrice = targetPrice.sub(absoluteDeviationMovement);
}
}
} else {
upwardCounter = 0;
downwardCounter = 0;
}
masterPot.massUpdatePools();
masterPot.setHotpotBasePerBlock(newHotpotBasePerBlock);
masterPot.setRedPotShare(newRedShare);
masterPot.setCircuitBreaker(inCircuitBreaker);
}
| /**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (_totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetPrice) / targetPrice
* and targetPrice is 1e18
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://06c3e1b7010ded32c215d8d2b064a338aa716548f7264dc15aba4614175c048f | {
"func_code_index": [
6331,
9134
]
} | 59,656 |
||
ChefMao | contracts\ChefMao.sol | 0xfbd3749eb2ed67454850939480433e71a9f5432d | Solidity | ChefMao | contract ChefMao {
using SafeMath for uint256;
modifier onlyGov() {
require(msg.sender == gov, 'onlyGov: caller is not gov');
_;
}
// an event emitted when deviationThreshold is changed
event NewDeviationThreshold(uint256 oldDeviationThreshold, uint256 newDeviationThreshold);
// an event emitted when deviationMovement is changed
event NewDeviationMovement(uint256 oldDeviationMovement, uint256 newDeviationMovement);
// Event emitted when pendingGov is changed
event NewPendingGov(address oldPendingGov, address newPendingGov);
// Event emitted when gov is changed
event NewGov(address oldGov, address newGov);
// Governance address
address public gov;
// Pending Governance address
address public pendingGov;
// Peg target
uint256 public targetPrice;
// POT Tokens created per block at inception.
// POT's inflation will eventually be governed by targetStock2Flow.
uint256 public farmHotpotBasePerBlock;
// Halving period for Hotpot Base per block, in blocks.
uint256 public halfLife = 88888;
// targetTokenPerBlock = totalSupply / (targetStock2Flow * 2,400,000)
// 2,400,000 is ~1-year's ETH block count as of Sep 2020
// See @100trillionUSD's article below on Scarcity and S2F:
// https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
//
// Ganularity of targetStock2Flow is intentionally restricted.
uint256 public targetStock2Flow = 10; // ~10% p.a. target inflation;
// If the current price is within this fractional distance from the target, no supply
// update is performed. Fixed point number--same format as the price.
// (ie) abs(price - targetPrice) / targetPrice < deviationThreshold, then no supply change.
uint256 public deviationThreshold = 5e16; // 5%
uint256 public deviationMovement = 5e16; // 5%
// More than this much time must pass between rebase operations.
uint256 public minRebaseTimeIntervalSec = 24 hours;
// Block timestamp of last rebase operation
uint256 public lastRebaseTimestamp;
// The rebase window begins this many seconds into the minRebaseTimeInterval period.
// For example if minRebaseTimeInterval is 24hrs, it represents the time of day in seconds.
uint256 public rebaseWindowOffsetSec = 28800; // 8am/8pm UTC rebases
// The length of the time window where a rebase operation is allowed to execute, in seconds.
uint256 public rebaseWindowLengthSec = 3600; // 60 minutes
// The number of rebase cycles since inception
uint256 public epoch;
// The number of halvings since inception
uint256 public halvingCounter;
// The number of consecutive upward threshold breaching when rebasing.
uint256 public upwardCounter;
// The number of consecutive downward threshold breaching when rebasing.
uint256 public downwardCounter;
uint256 public retargetThreshold = 2; // 2 days
// rebasing is not active initially. It can be activated at T+12 hours from
// deployment time
// boolean showing rebase activation status
bool public rebasingActive;
// delays rebasing activation to facilitate liquidity
uint256 public constant rebaseDelay = 12 hours;
// Time of TWAP initialization
uint256 public timeOfTwapInit;
// pair for reserveToken <> POT
address public uniswapPair;
// last TWAP update time
uint32 public blockTimestampLast;
// last TWAP cumulative price;
uint256 public priceCumulativeLast;
// Whether or not this token is first in uniswap POT<>Reserve pair
// address of USDT:
// address of POT:
bool public isToken0 = true;
IYuanYangPot public masterPot;
constructor(
IYuanYangPot _masterPot,
address _uniswapPair,
address _gov,
uint256 _targetPrice,
bool _isToken0
) public {
masterPot = _masterPot;
farmHotpotBasePerBlock = masterPot.hotpotBasePerBlock();
uniswapPair = _uniswapPair;
gov = _gov;
targetPrice = _targetPrice;
isToken0 = _isToken0;
}
// sets the pendingGov
function setPendingGov(address _pendingGov) external onlyGov {
address oldPendingGov = pendingGov;
pendingGov = _pendingGov;
emit NewPendingGov(oldPendingGov, _pendingGov);
}
// lets msg.sender accept governance
function acceptGov() external {
require(msg.sender == pendingGov, 'acceptGov: !pending');
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
// Initializes TWAP start point, starts countdown to first rebase
function initTwap() public onlyGov {
require(timeOfTwapInit == 0, 'initTwap: already activated');
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestamp
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulativeLast = isToken0 ? price0Cumulative : price1Cumulative;
require(priceCumulativeLast > 0, 'initTwap: no trades');
blockTimestampLast = blockTimestamp;
timeOfTwapInit = blockTimestamp;
}
// @notice Activates rebasing
// @dev One way function, cannot be undone, callable by anyone
function activateRebasing() public {
require(timeOfTwapInit > 0, 'activateRebasing: twap wasnt intitiated, call init_twap()');
// cannot enable prior to end of rebaseDelay
require(getNow() >= timeOfTwapInit + rebaseDelay, 'activateRebasing: !end_delay');
rebasingActive = true;
}
// If the latest block timestamp is within the rebase time window it, returns true.
// Otherwise, returns false.
function inRebaseWindow() public view returns (bool) {
// rebasing is delayed until there is a liquid market
require(rebasingActive, 'inRebaseWindow: rebasing not active');
uint256 nowTimestamp = getNow();
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) >= rebaseWindowOffsetSec,
'inRebaseWindow: too early'
);
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) <
(rebaseWindowOffsetSec.add(rebaseWindowLengthSec)),
'inRebaseWindow: too late'
);
return true;
}
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (_totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetPrice) / targetPrice
* and targetPrice is 1e18
*/
function rebase() public {
// no possibility of reentry as this function only invoke view functions or internal functions
// or functions from master pot which also only invoke only invoke view functions or internal functions
// EOA only
// require(msg.sender == tx.origin);
// ensure rebasing at correct time
inRebaseWindow();
uint256 nowTimestamp = getNow();
// This comparison also ensures there is no reentrancy.
require(
lastRebaseTimestamp.add(minRebaseTimeIntervalSec) < nowTimestamp,
'rebase: Rebase already triggered'
);
// Snap the rebase time to the start of this window.
lastRebaseTimestamp = nowTimestamp.sub(nowTimestamp.mod(minRebaseTimeIntervalSec)).add(
rebaseWindowOffsetSec
);
// no safe math required
epoch++;
// Get twap from uniswapv2.
(uint256 priceCumulative, uint32 blockTimestamp, uint256 twap) = getCurrentTwap();
priceCumulativeLast = priceCumulative;
blockTimestampLast = blockTimestamp;
bool inCircuitBreaker = false;
(
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
) = getNewHotpotBasePerBlock(twap);
farmHotpotBasePerBlock = newFarmHotpotBasePerBlock;
halvingCounter = newHalvingCounter;
uint256 newRedShare = getNewRedShare(twap);
// Do a bunch of things if twap is outside of threshold.
if (!withinDeviationThreshold(twap)) {
uint256 absoluteDeviationMovement = targetPrice.mul(deviationMovement).div(1e18);
// Calculates and sets the new target rate if twap is outside of threshold.
if (twap > targetPrice) {
// no safe math required
upwardCounter++;
if (downwardCounter > 0) {
downwardCounter = 0;
}
// if twap continues to go up, retargetThreshold is only effective for the first upward retarget
// and every following rebase would retarget upward until twap is within deviation threshold
if (upwardCounter >= retargetThreshold) {
targetPrice = targetPrice.add(absoluteDeviationMovement);
}
} else {
inCircuitBreaker = true;
// no safe math required
downwardCounter++;
if (upwardCounter > 0) {
upwardCounter = 0;
}
// if twap continues to go down, retargetThreshold is only effective for the first downward retarget
// and every following rebase would retarget downward until twap is within deviation threshold
if (downwardCounter >= retargetThreshold) {
targetPrice = targetPrice.sub(absoluteDeviationMovement);
}
}
} else {
upwardCounter = 0;
downwardCounter = 0;
}
masterPot.massUpdatePools();
masterPot.setHotpotBasePerBlock(newHotpotBasePerBlock);
masterPot.setRedPotShare(newRedShare);
masterPot.setCircuitBreaker(inCircuitBreaker);
}
/**
* @notice Calculates TWAP from uniswap
*
* @dev When liquidity is low, this can be manipulated by an end of block -> next block
* attack. We delay the activation of rebases 12 hours after liquidity incentives
* to reduce this attack vector. Additional there is very little supply
* to be able to manipulate this during that time period of highest vuln.
*/
function getCurrentTwap()
public
virtual
view
returns (
uint256 priceCumulative,
uint32 blockTimestamp,
uint256 twap
)
{
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestampUniswap
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulative = isToken0 ? price0Cumulative : price1Cumulative;
blockTimestamp = blockTimestampUniswap;
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// no period check as is done in isRebaseWindow
// overflow is desired, casting never truncates
// cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed
FixedPoint.uq112x112 memory priceAverage = FixedPoint.uq112x112(
uint224((priceCumulative - priceCumulativeLast) / timeElapsed)
);
// 1e30 for trading pair with 6-decimal tokens. Be ultra-cautious when changing this.
twap = FixedPoint.decode144(FixedPoint.mul(priceAverage, 1e30));
}
// Computes new tokenPerBlock based on price.
function getNewHotpotBasePerBlock(uint256 price)
public
view
returns (
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
)
{
uint256 blockElapsed = getBlockNumber().sub(masterPot.startBlock());
newHalvingCounter = blockElapsed.div(halfLife);
newFarmHotpotBasePerBlock = farmHotpotBasePerBlock;
// if new halvingCounter is larger than old one, perform halving.
if (newHalvingCounter > halvingCounter) {
newFarmHotpotBasePerBlock = newFarmHotpotBasePerBlock.div(2);
}
// computes newHotpotBasePerBlock based on targetStock2Flow.
newHotpotBasePerBlock = masterPot.hotpotBaseTotalSupply().div(
targetStock2Flow.mul(2400000)
);
// use the larger of newHotpotBasePerBlock and newFarmHotpotBasePerBlock.
newHotpotBasePerBlock = newHotpotBasePerBlock > newFarmHotpotBasePerBlock
? newHotpotBasePerBlock
: newFarmHotpotBasePerBlock;
if (price > targetPrice) {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(price).div(targetPrice);
} else {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(targetPrice).div(price);
}
}
// Computes new redShare based on price.
function getNewRedShare(uint256 price) public view returns (uint256) {
return uint256(1e24).div(price.mul(1e12).div(targetPrice).add(1e12));
}
// Check if the current price is within the deviation threshold for rebasing.
function withinDeviationThreshold(uint256 price) public view returns (bool) {
uint256 absoluteDeviationThreshold = targetPrice.mul(deviationThreshold).div(1e18);
return
(price >= targetPrice && price.sub(targetPrice) < absoluteDeviationThreshold) ||
(price < targetPrice && targetPrice.sub(price) < absoluteDeviationThreshold);
}
/**
* @notice Sets the deviation threshold fraction. If the exchange rate given by the market
* oracle is within this fractional distance from the targetPrice, then no supply
* modifications are made.
* @param _deviationThreshold The new exchange rate threshold fraction.
*/
function setDeviationThreshold(uint256 _deviationThreshold) external onlyGov {
require(_deviationThreshold > 0, 'deviationThreshold: too low');
uint256 oldDeviationThreshold = deviationThreshold;
deviationThreshold = _deviationThreshold;
emit NewDeviationThreshold(oldDeviationThreshold, _deviationThreshold);
}
function setDeviationMovement(uint256 _deviationMovement) external onlyGov {
require(_deviationMovement > 0, 'deviationMovement: too low');
uint256 oldDeviationMovement = deviationMovement;
deviationMovement = _deviationMovement;
emit NewDeviationMovement(oldDeviationMovement, _deviationMovement);
}
// Sets the retarget threshold parameter, Gov only.
function setRetargetThreshold(uint256 _retargetThreshold) external onlyGov {
require(_retargetThreshold > 0, 'retargetThreshold: too low');
retargetThreshold = _retargetThreshold;
}
// Overwrites the target stock-to-flow ratio, Gov only.
function setTargetStock2Flow(uint256 _targetStock2Flow) external onlyGov {
require(_targetStock2Flow > 0, 'targetStock2Flow: too low');
targetStock2Flow = _targetStock2Flow;
}
/**
* @notice Sets the parameters which control the timing and frequency of
* rebase operations.
* a) the minimum time period that must elapse between rebase cycles.
* b) the rebase window offset parameter.
* c) the rebase window length parameter.
* @param _minRebaseTimeIntervalSec More than this much time must pass between rebase
* operations, in seconds.
* @param _rebaseWindowOffsetSec The number of seconds from the beginning of
the rebase interval, where the rebase window begins.
* @param _rebaseWindowLengthSec The length of the rebase window in seconds.
*/
function setRebaseTimingParameters(
uint256 _minRebaseTimeIntervalSec,
uint256 _rebaseWindowOffsetSec,
uint256 _rebaseWindowLengthSec
) external onlyGov {
require(_minRebaseTimeIntervalSec > 0, 'minRebaseTimeIntervalSec: too low');
require(
_rebaseWindowOffsetSec < _minRebaseTimeIntervalSec,
'rebaseWindowOffsetSec: too high'
);
minRebaseTimeIntervalSec = _minRebaseTimeIntervalSec;
rebaseWindowOffsetSec = _rebaseWindowOffsetSec;
rebaseWindowLengthSec = _rebaseWindowLengthSec;
}
// Passthrough function to add pool.
function addPool(
uint256 _allocPoint,
IERC20 _lpToken,
bool _isRed,
bool _withUpdate
) public onlyGov {
masterPot.addPool(_allocPoint, _lpToken, _isRed, _withUpdate);
}
// Passthrough function to set pool.
function setPool(
uint256 _pid,
uint256 _allocPoint,
bool _withUpdate
) public onlyGov {
masterPot.setPool(_pid, _allocPoint, _withUpdate);
}
// Passthrough function to set tip rate.
function setTipRate(uint256 _tipRate) public onlyGov {
masterPot.setTipRate(_tipRate);
}
// Passthrough function to transfer pot ownership.
function transferPotOwnership(address newOwner) public onlyGov {
masterPot.transferPotOwnership(newOwner);
}
function getNow() public virtual view returns (uint256) {
return now;
}
function getBlockNumber() public virtual view returns (uint256) {
return block.number;
}
} | getCurrentTwap | function getCurrentTwap()
public
virtual
view
returns (
uint256 priceCumulative,
uint32 blockTimestamp,
uint256 twap
)
{
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestampUniswap
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulative = isToken0 ? price0Cumulative : price1Cumulative;
blockTimestamp = blockTimestampUniswap;
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// no period check as is done in isRebaseWindow
// overflow is desired, casting never truncates
// cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed
FixedPoint.uq112x112 memory priceAverage = FixedPoint.uq112x112(
uint224((priceCumulative - priceCumulativeLast) / timeElapsed)
);
// 1e30 for trading pair with 6-decimal tokens. Be ultra-cautious when changing this.
twap = FixedPoint.decode144(FixedPoint.mul(priceAverage, 1e30));
}
| /**
* @notice Calculates TWAP from uniswap
*
* @dev When liquidity is low, this can be manipulated by an end of block -> next block
* attack. We delay the activation of rebases 12 hours after liquidity incentives
* to reduce this attack vector. Additional there is very little supply
* to be able to manipulate this during that time period of highest vuln.
*/ | NatSpecMultiLine | v0.6.12+commit.27d51765 | MIT | ipfs://06c3e1b7010ded32c215d8d2b064a338aa716548f7264dc15aba4614175c048f | {
"func_code_index": [
9535,
10571
]
} | 59,657 |
||
ChefMao | contracts\ChefMao.sol | 0xfbd3749eb2ed67454850939480433e71a9f5432d | Solidity | ChefMao | contract ChefMao {
using SafeMath for uint256;
modifier onlyGov() {
require(msg.sender == gov, 'onlyGov: caller is not gov');
_;
}
// an event emitted when deviationThreshold is changed
event NewDeviationThreshold(uint256 oldDeviationThreshold, uint256 newDeviationThreshold);
// an event emitted when deviationMovement is changed
event NewDeviationMovement(uint256 oldDeviationMovement, uint256 newDeviationMovement);
// Event emitted when pendingGov is changed
event NewPendingGov(address oldPendingGov, address newPendingGov);
// Event emitted when gov is changed
event NewGov(address oldGov, address newGov);
// Governance address
address public gov;
// Pending Governance address
address public pendingGov;
// Peg target
uint256 public targetPrice;
// POT Tokens created per block at inception.
// POT's inflation will eventually be governed by targetStock2Flow.
uint256 public farmHotpotBasePerBlock;
// Halving period for Hotpot Base per block, in blocks.
uint256 public halfLife = 88888;
// targetTokenPerBlock = totalSupply / (targetStock2Flow * 2,400,000)
// 2,400,000 is ~1-year's ETH block count as of Sep 2020
// See @100trillionUSD's article below on Scarcity and S2F:
// https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
//
// Ganularity of targetStock2Flow is intentionally restricted.
uint256 public targetStock2Flow = 10; // ~10% p.a. target inflation;
// If the current price is within this fractional distance from the target, no supply
// update is performed. Fixed point number--same format as the price.
// (ie) abs(price - targetPrice) / targetPrice < deviationThreshold, then no supply change.
uint256 public deviationThreshold = 5e16; // 5%
uint256 public deviationMovement = 5e16; // 5%
// More than this much time must pass between rebase operations.
uint256 public minRebaseTimeIntervalSec = 24 hours;
// Block timestamp of last rebase operation
uint256 public lastRebaseTimestamp;
// The rebase window begins this many seconds into the minRebaseTimeInterval period.
// For example if minRebaseTimeInterval is 24hrs, it represents the time of day in seconds.
uint256 public rebaseWindowOffsetSec = 28800; // 8am/8pm UTC rebases
// The length of the time window where a rebase operation is allowed to execute, in seconds.
uint256 public rebaseWindowLengthSec = 3600; // 60 minutes
// The number of rebase cycles since inception
uint256 public epoch;
// The number of halvings since inception
uint256 public halvingCounter;
// The number of consecutive upward threshold breaching when rebasing.
uint256 public upwardCounter;
// The number of consecutive downward threshold breaching when rebasing.
uint256 public downwardCounter;
uint256 public retargetThreshold = 2; // 2 days
// rebasing is not active initially. It can be activated at T+12 hours from
// deployment time
// boolean showing rebase activation status
bool public rebasingActive;
// delays rebasing activation to facilitate liquidity
uint256 public constant rebaseDelay = 12 hours;
// Time of TWAP initialization
uint256 public timeOfTwapInit;
// pair for reserveToken <> POT
address public uniswapPair;
// last TWAP update time
uint32 public blockTimestampLast;
// last TWAP cumulative price;
uint256 public priceCumulativeLast;
// Whether or not this token is first in uniswap POT<>Reserve pair
// address of USDT:
// address of POT:
bool public isToken0 = true;
IYuanYangPot public masterPot;
constructor(
IYuanYangPot _masterPot,
address _uniswapPair,
address _gov,
uint256 _targetPrice,
bool _isToken0
) public {
masterPot = _masterPot;
farmHotpotBasePerBlock = masterPot.hotpotBasePerBlock();
uniswapPair = _uniswapPair;
gov = _gov;
targetPrice = _targetPrice;
isToken0 = _isToken0;
}
// sets the pendingGov
function setPendingGov(address _pendingGov) external onlyGov {
address oldPendingGov = pendingGov;
pendingGov = _pendingGov;
emit NewPendingGov(oldPendingGov, _pendingGov);
}
// lets msg.sender accept governance
function acceptGov() external {
require(msg.sender == pendingGov, 'acceptGov: !pending');
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
// Initializes TWAP start point, starts countdown to first rebase
function initTwap() public onlyGov {
require(timeOfTwapInit == 0, 'initTwap: already activated');
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestamp
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulativeLast = isToken0 ? price0Cumulative : price1Cumulative;
require(priceCumulativeLast > 0, 'initTwap: no trades');
blockTimestampLast = blockTimestamp;
timeOfTwapInit = blockTimestamp;
}
// @notice Activates rebasing
// @dev One way function, cannot be undone, callable by anyone
function activateRebasing() public {
require(timeOfTwapInit > 0, 'activateRebasing: twap wasnt intitiated, call init_twap()');
// cannot enable prior to end of rebaseDelay
require(getNow() >= timeOfTwapInit + rebaseDelay, 'activateRebasing: !end_delay');
rebasingActive = true;
}
// If the latest block timestamp is within the rebase time window it, returns true.
// Otherwise, returns false.
function inRebaseWindow() public view returns (bool) {
// rebasing is delayed until there is a liquid market
require(rebasingActive, 'inRebaseWindow: rebasing not active');
uint256 nowTimestamp = getNow();
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) >= rebaseWindowOffsetSec,
'inRebaseWindow: too early'
);
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) <
(rebaseWindowOffsetSec.add(rebaseWindowLengthSec)),
'inRebaseWindow: too late'
);
return true;
}
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (_totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetPrice) / targetPrice
* and targetPrice is 1e18
*/
function rebase() public {
// no possibility of reentry as this function only invoke view functions or internal functions
// or functions from master pot which also only invoke only invoke view functions or internal functions
// EOA only
// require(msg.sender == tx.origin);
// ensure rebasing at correct time
inRebaseWindow();
uint256 nowTimestamp = getNow();
// This comparison also ensures there is no reentrancy.
require(
lastRebaseTimestamp.add(minRebaseTimeIntervalSec) < nowTimestamp,
'rebase: Rebase already triggered'
);
// Snap the rebase time to the start of this window.
lastRebaseTimestamp = nowTimestamp.sub(nowTimestamp.mod(minRebaseTimeIntervalSec)).add(
rebaseWindowOffsetSec
);
// no safe math required
epoch++;
// Get twap from uniswapv2.
(uint256 priceCumulative, uint32 blockTimestamp, uint256 twap) = getCurrentTwap();
priceCumulativeLast = priceCumulative;
blockTimestampLast = blockTimestamp;
bool inCircuitBreaker = false;
(
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
) = getNewHotpotBasePerBlock(twap);
farmHotpotBasePerBlock = newFarmHotpotBasePerBlock;
halvingCounter = newHalvingCounter;
uint256 newRedShare = getNewRedShare(twap);
// Do a bunch of things if twap is outside of threshold.
if (!withinDeviationThreshold(twap)) {
uint256 absoluteDeviationMovement = targetPrice.mul(deviationMovement).div(1e18);
// Calculates and sets the new target rate if twap is outside of threshold.
if (twap > targetPrice) {
// no safe math required
upwardCounter++;
if (downwardCounter > 0) {
downwardCounter = 0;
}
// if twap continues to go up, retargetThreshold is only effective for the first upward retarget
// and every following rebase would retarget upward until twap is within deviation threshold
if (upwardCounter >= retargetThreshold) {
targetPrice = targetPrice.add(absoluteDeviationMovement);
}
} else {
inCircuitBreaker = true;
// no safe math required
downwardCounter++;
if (upwardCounter > 0) {
upwardCounter = 0;
}
// if twap continues to go down, retargetThreshold is only effective for the first downward retarget
// and every following rebase would retarget downward until twap is within deviation threshold
if (downwardCounter >= retargetThreshold) {
targetPrice = targetPrice.sub(absoluteDeviationMovement);
}
}
} else {
upwardCounter = 0;
downwardCounter = 0;
}
masterPot.massUpdatePools();
masterPot.setHotpotBasePerBlock(newHotpotBasePerBlock);
masterPot.setRedPotShare(newRedShare);
masterPot.setCircuitBreaker(inCircuitBreaker);
}
/**
* @notice Calculates TWAP from uniswap
*
* @dev When liquidity is low, this can be manipulated by an end of block -> next block
* attack. We delay the activation of rebases 12 hours after liquidity incentives
* to reduce this attack vector. Additional there is very little supply
* to be able to manipulate this during that time period of highest vuln.
*/
function getCurrentTwap()
public
virtual
view
returns (
uint256 priceCumulative,
uint32 blockTimestamp,
uint256 twap
)
{
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestampUniswap
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulative = isToken0 ? price0Cumulative : price1Cumulative;
blockTimestamp = blockTimestampUniswap;
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// no period check as is done in isRebaseWindow
// overflow is desired, casting never truncates
// cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed
FixedPoint.uq112x112 memory priceAverage = FixedPoint.uq112x112(
uint224((priceCumulative - priceCumulativeLast) / timeElapsed)
);
// 1e30 for trading pair with 6-decimal tokens. Be ultra-cautious when changing this.
twap = FixedPoint.decode144(FixedPoint.mul(priceAverage, 1e30));
}
// Computes new tokenPerBlock based on price.
function getNewHotpotBasePerBlock(uint256 price)
public
view
returns (
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
)
{
uint256 blockElapsed = getBlockNumber().sub(masterPot.startBlock());
newHalvingCounter = blockElapsed.div(halfLife);
newFarmHotpotBasePerBlock = farmHotpotBasePerBlock;
// if new halvingCounter is larger than old one, perform halving.
if (newHalvingCounter > halvingCounter) {
newFarmHotpotBasePerBlock = newFarmHotpotBasePerBlock.div(2);
}
// computes newHotpotBasePerBlock based on targetStock2Flow.
newHotpotBasePerBlock = masterPot.hotpotBaseTotalSupply().div(
targetStock2Flow.mul(2400000)
);
// use the larger of newHotpotBasePerBlock and newFarmHotpotBasePerBlock.
newHotpotBasePerBlock = newHotpotBasePerBlock > newFarmHotpotBasePerBlock
? newHotpotBasePerBlock
: newFarmHotpotBasePerBlock;
if (price > targetPrice) {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(price).div(targetPrice);
} else {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(targetPrice).div(price);
}
}
// Computes new redShare based on price.
function getNewRedShare(uint256 price) public view returns (uint256) {
return uint256(1e24).div(price.mul(1e12).div(targetPrice).add(1e12));
}
// Check if the current price is within the deviation threshold for rebasing.
function withinDeviationThreshold(uint256 price) public view returns (bool) {
uint256 absoluteDeviationThreshold = targetPrice.mul(deviationThreshold).div(1e18);
return
(price >= targetPrice && price.sub(targetPrice) < absoluteDeviationThreshold) ||
(price < targetPrice && targetPrice.sub(price) < absoluteDeviationThreshold);
}
/**
* @notice Sets the deviation threshold fraction. If the exchange rate given by the market
* oracle is within this fractional distance from the targetPrice, then no supply
* modifications are made.
* @param _deviationThreshold The new exchange rate threshold fraction.
*/
function setDeviationThreshold(uint256 _deviationThreshold) external onlyGov {
require(_deviationThreshold > 0, 'deviationThreshold: too low');
uint256 oldDeviationThreshold = deviationThreshold;
deviationThreshold = _deviationThreshold;
emit NewDeviationThreshold(oldDeviationThreshold, _deviationThreshold);
}
function setDeviationMovement(uint256 _deviationMovement) external onlyGov {
require(_deviationMovement > 0, 'deviationMovement: too low');
uint256 oldDeviationMovement = deviationMovement;
deviationMovement = _deviationMovement;
emit NewDeviationMovement(oldDeviationMovement, _deviationMovement);
}
// Sets the retarget threshold parameter, Gov only.
function setRetargetThreshold(uint256 _retargetThreshold) external onlyGov {
require(_retargetThreshold > 0, 'retargetThreshold: too low');
retargetThreshold = _retargetThreshold;
}
// Overwrites the target stock-to-flow ratio, Gov only.
function setTargetStock2Flow(uint256 _targetStock2Flow) external onlyGov {
require(_targetStock2Flow > 0, 'targetStock2Flow: too low');
targetStock2Flow = _targetStock2Flow;
}
/**
* @notice Sets the parameters which control the timing and frequency of
* rebase operations.
* a) the minimum time period that must elapse between rebase cycles.
* b) the rebase window offset parameter.
* c) the rebase window length parameter.
* @param _minRebaseTimeIntervalSec More than this much time must pass between rebase
* operations, in seconds.
* @param _rebaseWindowOffsetSec The number of seconds from the beginning of
the rebase interval, where the rebase window begins.
* @param _rebaseWindowLengthSec The length of the rebase window in seconds.
*/
function setRebaseTimingParameters(
uint256 _minRebaseTimeIntervalSec,
uint256 _rebaseWindowOffsetSec,
uint256 _rebaseWindowLengthSec
) external onlyGov {
require(_minRebaseTimeIntervalSec > 0, 'minRebaseTimeIntervalSec: too low');
require(
_rebaseWindowOffsetSec < _minRebaseTimeIntervalSec,
'rebaseWindowOffsetSec: too high'
);
minRebaseTimeIntervalSec = _minRebaseTimeIntervalSec;
rebaseWindowOffsetSec = _rebaseWindowOffsetSec;
rebaseWindowLengthSec = _rebaseWindowLengthSec;
}
// Passthrough function to add pool.
function addPool(
uint256 _allocPoint,
IERC20 _lpToken,
bool _isRed,
bool _withUpdate
) public onlyGov {
masterPot.addPool(_allocPoint, _lpToken, _isRed, _withUpdate);
}
// Passthrough function to set pool.
function setPool(
uint256 _pid,
uint256 _allocPoint,
bool _withUpdate
) public onlyGov {
masterPot.setPool(_pid, _allocPoint, _withUpdate);
}
// Passthrough function to set tip rate.
function setTipRate(uint256 _tipRate) public onlyGov {
masterPot.setTipRate(_tipRate);
}
// Passthrough function to transfer pot ownership.
function transferPotOwnership(address newOwner) public onlyGov {
masterPot.transferPotOwnership(newOwner);
}
function getNow() public virtual view returns (uint256) {
return now;
}
function getBlockNumber() public virtual view returns (uint256) {
return block.number;
}
} | getNewHotpotBasePerBlock | function getNewHotpotBasePerBlock(uint256 price)
public
view
returns (
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
)
{
uint256 blockElapsed = getBlockNumber().sub(masterPot.startBlock());
newHalvingCounter = blockElapsed.div(halfLife);
newFarmHotpotBasePerBlock = farmHotpotBasePerBlock;
// if new halvingCounter is larger than old one, perform halving.
if (newHalvingCounter > halvingCounter) {
newFarmHotpotBasePerBlock = newFarmHotpotBasePerBlock.div(2);
}
// computes newHotpotBasePerBlock based on targetStock2Flow.
newHotpotBasePerBlock = masterPot.hotpotBaseTotalSupply().div(
targetStock2Flow.mul(2400000)
);
// use the larger of newHotpotBasePerBlock and newFarmHotpotBasePerBlock.
newHotpotBasePerBlock = newHotpotBasePerBlock > newFarmHotpotBasePerBlock
? newHotpotBasePerBlock
: newFarmHotpotBasePerBlock;
if (price > targetPrice) {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(price).div(targetPrice);
} else {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(targetPrice).div(price);
}
}
| // Computes new tokenPerBlock based on price. | LineComment | v0.6.12+commit.27d51765 | MIT | ipfs://06c3e1b7010ded32c215d8d2b064a338aa716548f7264dc15aba4614175c048f | {
"func_code_index": [
10622,
11781
]
} | 59,658 |
||
ChefMao | contracts\ChefMao.sol | 0xfbd3749eb2ed67454850939480433e71a9f5432d | Solidity | ChefMao | contract ChefMao {
using SafeMath for uint256;
modifier onlyGov() {
require(msg.sender == gov, 'onlyGov: caller is not gov');
_;
}
// an event emitted when deviationThreshold is changed
event NewDeviationThreshold(uint256 oldDeviationThreshold, uint256 newDeviationThreshold);
// an event emitted when deviationMovement is changed
event NewDeviationMovement(uint256 oldDeviationMovement, uint256 newDeviationMovement);
// Event emitted when pendingGov is changed
event NewPendingGov(address oldPendingGov, address newPendingGov);
// Event emitted when gov is changed
event NewGov(address oldGov, address newGov);
// Governance address
address public gov;
// Pending Governance address
address public pendingGov;
// Peg target
uint256 public targetPrice;
// POT Tokens created per block at inception.
// POT's inflation will eventually be governed by targetStock2Flow.
uint256 public farmHotpotBasePerBlock;
// Halving period for Hotpot Base per block, in blocks.
uint256 public halfLife = 88888;
// targetTokenPerBlock = totalSupply / (targetStock2Flow * 2,400,000)
// 2,400,000 is ~1-year's ETH block count as of Sep 2020
// See @100trillionUSD's article below on Scarcity and S2F:
// https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
//
// Ganularity of targetStock2Flow is intentionally restricted.
uint256 public targetStock2Flow = 10; // ~10% p.a. target inflation;
// If the current price is within this fractional distance from the target, no supply
// update is performed. Fixed point number--same format as the price.
// (ie) abs(price - targetPrice) / targetPrice < deviationThreshold, then no supply change.
uint256 public deviationThreshold = 5e16; // 5%
uint256 public deviationMovement = 5e16; // 5%
// More than this much time must pass between rebase operations.
uint256 public minRebaseTimeIntervalSec = 24 hours;
// Block timestamp of last rebase operation
uint256 public lastRebaseTimestamp;
// The rebase window begins this many seconds into the minRebaseTimeInterval period.
// For example if minRebaseTimeInterval is 24hrs, it represents the time of day in seconds.
uint256 public rebaseWindowOffsetSec = 28800; // 8am/8pm UTC rebases
// The length of the time window where a rebase operation is allowed to execute, in seconds.
uint256 public rebaseWindowLengthSec = 3600; // 60 minutes
// The number of rebase cycles since inception
uint256 public epoch;
// The number of halvings since inception
uint256 public halvingCounter;
// The number of consecutive upward threshold breaching when rebasing.
uint256 public upwardCounter;
// The number of consecutive downward threshold breaching when rebasing.
uint256 public downwardCounter;
uint256 public retargetThreshold = 2; // 2 days
// rebasing is not active initially. It can be activated at T+12 hours from
// deployment time
// boolean showing rebase activation status
bool public rebasingActive;
// delays rebasing activation to facilitate liquidity
uint256 public constant rebaseDelay = 12 hours;
// Time of TWAP initialization
uint256 public timeOfTwapInit;
// pair for reserveToken <> POT
address public uniswapPair;
// last TWAP update time
uint32 public blockTimestampLast;
// last TWAP cumulative price;
uint256 public priceCumulativeLast;
// Whether or not this token is first in uniswap POT<>Reserve pair
// address of USDT:
// address of POT:
bool public isToken0 = true;
IYuanYangPot public masterPot;
constructor(
IYuanYangPot _masterPot,
address _uniswapPair,
address _gov,
uint256 _targetPrice,
bool _isToken0
) public {
masterPot = _masterPot;
farmHotpotBasePerBlock = masterPot.hotpotBasePerBlock();
uniswapPair = _uniswapPair;
gov = _gov;
targetPrice = _targetPrice;
isToken0 = _isToken0;
}
// sets the pendingGov
function setPendingGov(address _pendingGov) external onlyGov {
address oldPendingGov = pendingGov;
pendingGov = _pendingGov;
emit NewPendingGov(oldPendingGov, _pendingGov);
}
// lets msg.sender accept governance
function acceptGov() external {
require(msg.sender == pendingGov, 'acceptGov: !pending');
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
// Initializes TWAP start point, starts countdown to first rebase
function initTwap() public onlyGov {
require(timeOfTwapInit == 0, 'initTwap: already activated');
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestamp
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulativeLast = isToken0 ? price0Cumulative : price1Cumulative;
require(priceCumulativeLast > 0, 'initTwap: no trades');
blockTimestampLast = blockTimestamp;
timeOfTwapInit = blockTimestamp;
}
// @notice Activates rebasing
// @dev One way function, cannot be undone, callable by anyone
function activateRebasing() public {
require(timeOfTwapInit > 0, 'activateRebasing: twap wasnt intitiated, call init_twap()');
// cannot enable prior to end of rebaseDelay
require(getNow() >= timeOfTwapInit + rebaseDelay, 'activateRebasing: !end_delay');
rebasingActive = true;
}
// If the latest block timestamp is within the rebase time window it, returns true.
// Otherwise, returns false.
function inRebaseWindow() public view returns (bool) {
// rebasing is delayed until there is a liquid market
require(rebasingActive, 'inRebaseWindow: rebasing not active');
uint256 nowTimestamp = getNow();
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) >= rebaseWindowOffsetSec,
'inRebaseWindow: too early'
);
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) <
(rebaseWindowOffsetSec.add(rebaseWindowLengthSec)),
'inRebaseWindow: too late'
);
return true;
}
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (_totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetPrice) / targetPrice
* and targetPrice is 1e18
*/
function rebase() public {
// no possibility of reentry as this function only invoke view functions or internal functions
// or functions from master pot which also only invoke only invoke view functions or internal functions
// EOA only
// require(msg.sender == tx.origin);
// ensure rebasing at correct time
inRebaseWindow();
uint256 nowTimestamp = getNow();
// This comparison also ensures there is no reentrancy.
require(
lastRebaseTimestamp.add(minRebaseTimeIntervalSec) < nowTimestamp,
'rebase: Rebase already triggered'
);
// Snap the rebase time to the start of this window.
lastRebaseTimestamp = nowTimestamp.sub(nowTimestamp.mod(minRebaseTimeIntervalSec)).add(
rebaseWindowOffsetSec
);
// no safe math required
epoch++;
// Get twap from uniswapv2.
(uint256 priceCumulative, uint32 blockTimestamp, uint256 twap) = getCurrentTwap();
priceCumulativeLast = priceCumulative;
blockTimestampLast = blockTimestamp;
bool inCircuitBreaker = false;
(
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
) = getNewHotpotBasePerBlock(twap);
farmHotpotBasePerBlock = newFarmHotpotBasePerBlock;
halvingCounter = newHalvingCounter;
uint256 newRedShare = getNewRedShare(twap);
// Do a bunch of things if twap is outside of threshold.
if (!withinDeviationThreshold(twap)) {
uint256 absoluteDeviationMovement = targetPrice.mul(deviationMovement).div(1e18);
// Calculates and sets the new target rate if twap is outside of threshold.
if (twap > targetPrice) {
// no safe math required
upwardCounter++;
if (downwardCounter > 0) {
downwardCounter = 0;
}
// if twap continues to go up, retargetThreshold is only effective for the first upward retarget
// and every following rebase would retarget upward until twap is within deviation threshold
if (upwardCounter >= retargetThreshold) {
targetPrice = targetPrice.add(absoluteDeviationMovement);
}
} else {
inCircuitBreaker = true;
// no safe math required
downwardCounter++;
if (upwardCounter > 0) {
upwardCounter = 0;
}
// if twap continues to go down, retargetThreshold is only effective for the first downward retarget
// and every following rebase would retarget downward until twap is within deviation threshold
if (downwardCounter >= retargetThreshold) {
targetPrice = targetPrice.sub(absoluteDeviationMovement);
}
}
} else {
upwardCounter = 0;
downwardCounter = 0;
}
masterPot.massUpdatePools();
masterPot.setHotpotBasePerBlock(newHotpotBasePerBlock);
masterPot.setRedPotShare(newRedShare);
masterPot.setCircuitBreaker(inCircuitBreaker);
}
/**
* @notice Calculates TWAP from uniswap
*
* @dev When liquidity is low, this can be manipulated by an end of block -> next block
* attack. We delay the activation of rebases 12 hours after liquidity incentives
* to reduce this attack vector. Additional there is very little supply
* to be able to manipulate this during that time period of highest vuln.
*/
function getCurrentTwap()
public
virtual
view
returns (
uint256 priceCumulative,
uint32 blockTimestamp,
uint256 twap
)
{
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestampUniswap
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulative = isToken0 ? price0Cumulative : price1Cumulative;
blockTimestamp = blockTimestampUniswap;
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// no period check as is done in isRebaseWindow
// overflow is desired, casting never truncates
// cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed
FixedPoint.uq112x112 memory priceAverage = FixedPoint.uq112x112(
uint224((priceCumulative - priceCumulativeLast) / timeElapsed)
);
// 1e30 for trading pair with 6-decimal tokens. Be ultra-cautious when changing this.
twap = FixedPoint.decode144(FixedPoint.mul(priceAverage, 1e30));
}
// Computes new tokenPerBlock based on price.
function getNewHotpotBasePerBlock(uint256 price)
public
view
returns (
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
)
{
uint256 blockElapsed = getBlockNumber().sub(masterPot.startBlock());
newHalvingCounter = blockElapsed.div(halfLife);
newFarmHotpotBasePerBlock = farmHotpotBasePerBlock;
// if new halvingCounter is larger than old one, perform halving.
if (newHalvingCounter > halvingCounter) {
newFarmHotpotBasePerBlock = newFarmHotpotBasePerBlock.div(2);
}
// computes newHotpotBasePerBlock based on targetStock2Flow.
newHotpotBasePerBlock = masterPot.hotpotBaseTotalSupply().div(
targetStock2Flow.mul(2400000)
);
// use the larger of newHotpotBasePerBlock and newFarmHotpotBasePerBlock.
newHotpotBasePerBlock = newHotpotBasePerBlock > newFarmHotpotBasePerBlock
? newHotpotBasePerBlock
: newFarmHotpotBasePerBlock;
if (price > targetPrice) {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(price).div(targetPrice);
} else {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(targetPrice).div(price);
}
}
// Computes new redShare based on price.
function getNewRedShare(uint256 price) public view returns (uint256) {
return uint256(1e24).div(price.mul(1e12).div(targetPrice).add(1e12));
}
// Check if the current price is within the deviation threshold for rebasing.
function withinDeviationThreshold(uint256 price) public view returns (bool) {
uint256 absoluteDeviationThreshold = targetPrice.mul(deviationThreshold).div(1e18);
return
(price >= targetPrice && price.sub(targetPrice) < absoluteDeviationThreshold) ||
(price < targetPrice && targetPrice.sub(price) < absoluteDeviationThreshold);
}
/**
* @notice Sets the deviation threshold fraction. If the exchange rate given by the market
* oracle is within this fractional distance from the targetPrice, then no supply
* modifications are made.
* @param _deviationThreshold The new exchange rate threshold fraction.
*/
function setDeviationThreshold(uint256 _deviationThreshold) external onlyGov {
require(_deviationThreshold > 0, 'deviationThreshold: too low');
uint256 oldDeviationThreshold = deviationThreshold;
deviationThreshold = _deviationThreshold;
emit NewDeviationThreshold(oldDeviationThreshold, _deviationThreshold);
}
function setDeviationMovement(uint256 _deviationMovement) external onlyGov {
require(_deviationMovement > 0, 'deviationMovement: too low');
uint256 oldDeviationMovement = deviationMovement;
deviationMovement = _deviationMovement;
emit NewDeviationMovement(oldDeviationMovement, _deviationMovement);
}
// Sets the retarget threshold parameter, Gov only.
function setRetargetThreshold(uint256 _retargetThreshold) external onlyGov {
require(_retargetThreshold > 0, 'retargetThreshold: too low');
retargetThreshold = _retargetThreshold;
}
// Overwrites the target stock-to-flow ratio, Gov only.
function setTargetStock2Flow(uint256 _targetStock2Flow) external onlyGov {
require(_targetStock2Flow > 0, 'targetStock2Flow: too low');
targetStock2Flow = _targetStock2Flow;
}
/**
* @notice Sets the parameters which control the timing and frequency of
* rebase operations.
* a) the minimum time period that must elapse between rebase cycles.
* b) the rebase window offset parameter.
* c) the rebase window length parameter.
* @param _minRebaseTimeIntervalSec More than this much time must pass between rebase
* operations, in seconds.
* @param _rebaseWindowOffsetSec The number of seconds from the beginning of
the rebase interval, where the rebase window begins.
* @param _rebaseWindowLengthSec The length of the rebase window in seconds.
*/
function setRebaseTimingParameters(
uint256 _minRebaseTimeIntervalSec,
uint256 _rebaseWindowOffsetSec,
uint256 _rebaseWindowLengthSec
) external onlyGov {
require(_minRebaseTimeIntervalSec > 0, 'minRebaseTimeIntervalSec: too low');
require(
_rebaseWindowOffsetSec < _minRebaseTimeIntervalSec,
'rebaseWindowOffsetSec: too high'
);
minRebaseTimeIntervalSec = _minRebaseTimeIntervalSec;
rebaseWindowOffsetSec = _rebaseWindowOffsetSec;
rebaseWindowLengthSec = _rebaseWindowLengthSec;
}
// Passthrough function to add pool.
function addPool(
uint256 _allocPoint,
IERC20 _lpToken,
bool _isRed,
bool _withUpdate
) public onlyGov {
masterPot.addPool(_allocPoint, _lpToken, _isRed, _withUpdate);
}
// Passthrough function to set pool.
function setPool(
uint256 _pid,
uint256 _allocPoint,
bool _withUpdate
) public onlyGov {
masterPot.setPool(_pid, _allocPoint, _withUpdate);
}
// Passthrough function to set tip rate.
function setTipRate(uint256 _tipRate) public onlyGov {
masterPot.setTipRate(_tipRate);
}
// Passthrough function to transfer pot ownership.
function transferPotOwnership(address newOwner) public onlyGov {
masterPot.transferPotOwnership(newOwner);
}
function getNow() public virtual view returns (uint256) {
return now;
}
function getBlockNumber() public virtual view returns (uint256) {
return block.number;
}
} | getNewRedShare | function getNewRedShare(uint256 price) public view returns (uint256) {
return uint256(1e24).div(price.mul(1e12).div(targetPrice).add(1e12));
}
| // Computes new redShare based on price. | LineComment | v0.6.12+commit.27d51765 | MIT | ipfs://06c3e1b7010ded32c215d8d2b064a338aa716548f7264dc15aba4614175c048f | {
"func_code_index": [
11827,
11976
]
} | 59,659 |
||
ChefMao | contracts\ChefMao.sol | 0xfbd3749eb2ed67454850939480433e71a9f5432d | Solidity | ChefMao | contract ChefMao {
using SafeMath for uint256;
modifier onlyGov() {
require(msg.sender == gov, 'onlyGov: caller is not gov');
_;
}
// an event emitted when deviationThreshold is changed
event NewDeviationThreshold(uint256 oldDeviationThreshold, uint256 newDeviationThreshold);
// an event emitted when deviationMovement is changed
event NewDeviationMovement(uint256 oldDeviationMovement, uint256 newDeviationMovement);
// Event emitted when pendingGov is changed
event NewPendingGov(address oldPendingGov, address newPendingGov);
// Event emitted when gov is changed
event NewGov(address oldGov, address newGov);
// Governance address
address public gov;
// Pending Governance address
address public pendingGov;
// Peg target
uint256 public targetPrice;
// POT Tokens created per block at inception.
// POT's inflation will eventually be governed by targetStock2Flow.
uint256 public farmHotpotBasePerBlock;
// Halving period for Hotpot Base per block, in blocks.
uint256 public halfLife = 88888;
// targetTokenPerBlock = totalSupply / (targetStock2Flow * 2,400,000)
// 2,400,000 is ~1-year's ETH block count as of Sep 2020
// See @100trillionUSD's article below on Scarcity and S2F:
// https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
//
// Ganularity of targetStock2Flow is intentionally restricted.
uint256 public targetStock2Flow = 10; // ~10% p.a. target inflation;
// If the current price is within this fractional distance from the target, no supply
// update is performed. Fixed point number--same format as the price.
// (ie) abs(price - targetPrice) / targetPrice < deviationThreshold, then no supply change.
uint256 public deviationThreshold = 5e16; // 5%
uint256 public deviationMovement = 5e16; // 5%
// More than this much time must pass between rebase operations.
uint256 public minRebaseTimeIntervalSec = 24 hours;
// Block timestamp of last rebase operation
uint256 public lastRebaseTimestamp;
// The rebase window begins this many seconds into the minRebaseTimeInterval period.
// For example if minRebaseTimeInterval is 24hrs, it represents the time of day in seconds.
uint256 public rebaseWindowOffsetSec = 28800; // 8am/8pm UTC rebases
// The length of the time window where a rebase operation is allowed to execute, in seconds.
uint256 public rebaseWindowLengthSec = 3600; // 60 minutes
// The number of rebase cycles since inception
uint256 public epoch;
// The number of halvings since inception
uint256 public halvingCounter;
// The number of consecutive upward threshold breaching when rebasing.
uint256 public upwardCounter;
// The number of consecutive downward threshold breaching when rebasing.
uint256 public downwardCounter;
uint256 public retargetThreshold = 2; // 2 days
// rebasing is not active initially. It can be activated at T+12 hours from
// deployment time
// boolean showing rebase activation status
bool public rebasingActive;
// delays rebasing activation to facilitate liquidity
uint256 public constant rebaseDelay = 12 hours;
// Time of TWAP initialization
uint256 public timeOfTwapInit;
// pair for reserveToken <> POT
address public uniswapPair;
// last TWAP update time
uint32 public blockTimestampLast;
// last TWAP cumulative price;
uint256 public priceCumulativeLast;
// Whether or not this token is first in uniswap POT<>Reserve pair
// address of USDT:
// address of POT:
bool public isToken0 = true;
IYuanYangPot public masterPot;
constructor(
IYuanYangPot _masterPot,
address _uniswapPair,
address _gov,
uint256 _targetPrice,
bool _isToken0
) public {
masterPot = _masterPot;
farmHotpotBasePerBlock = masterPot.hotpotBasePerBlock();
uniswapPair = _uniswapPair;
gov = _gov;
targetPrice = _targetPrice;
isToken0 = _isToken0;
}
// sets the pendingGov
function setPendingGov(address _pendingGov) external onlyGov {
address oldPendingGov = pendingGov;
pendingGov = _pendingGov;
emit NewPendingGov(oldPendingGov, _pendingGov);
}
// lets msg.sender accept governance
function acceptGov() external {
require(msg.sender == pendingGov, 'acceptGov: !pending');
address oldGov = gov;
gov = pendingGov;
pendingGov = address(0);
emit NewGov(oldGov, gov);
}
// Initializes TWAP start point, starts countdown to first rebase
function initTwap() public onlyGov {
require(timeOfTwapInit == 0, 'initTwap: already activated');
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestamp
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulativeLast = isToken0 ? price0Cumulative : price1Cumulative;
require(priceCumulativeLast > 0, 'initTwap: no trades');
blockTimestampLast = blockTimestamp;
timeOfTwapInit = blockTimestamp;
}
// @notice Activates rebasing
// @dev One way function, cannot be undone, callable by anyone
function activateRebasing() public {
require(timeOfTwapInit > 0, 'activateRebasing: twap wasnt intitiated, call init_twap()');
// cannot enable prior to end of rebaseDelay
require(getNow() >= timeOfTwapInit + rebaseDelay, 'activateRebasing: !end_delay');
rebasingActive = true;
}
// If the latest block timestamp is within the rebase time window it, returns true.
// Otherwise, returns false.
function inRebaseWindow() public view returns (bool) {
// rebasing is delayed until there is a liquid market
require(rebasingActive, 'inRebaseWindow: rebasing not active');
uint256 nowTimestamp = getNow();
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) >= rebaseWindowOffsetSec,
'inRebaseWindow: too early'
);
require(
nowTimestamp.mod(minRebaseTimeIntervalSec) <
(rebaseWindowOffsetSec.add(rebaseWindowLengthSec)),
'inRebaseWindow: too late'
);
return true;
}
/**
* @notice Initiates a new rebase operation, provided the minimum time period has elapsed.
*
* @dev The supply adjustment equals (_totalSupply * DeviationFromTargetRate) / rebaseLag
* Where DeviationFromTargetRate is (MarketOracleRate - targetPrice) / targetPrice
* and targetPrice is 1e18
*/
function rebase() public {
// no possibility of reentry as this function only invoke view functions or internal functions
// or functions from master pot which also only invoke only invoke view functions or internal functions
// EOA only
// require(msg.sender == tx.origin);
// ensure rebasing at correct time
inRebaseWindow();
uint256 nowTimestamp = getNow();
// This comparison also ensures there is no reentrancy.
require(
lastRebaseTimestamp.add(minRebaseTimeIntervalSec) < nowTimestamp,
'rebase: Rebase already triggered'
);
// Snap the rebase time to the start of this window.
lastRebaseTimestamp = nowTimestamp.sub(nowTimestamp.mod(minRebaseTimeIntervalSec)).add(
rebaseWindowOffsetSec
);
// no safe math required
epoch++;
// Get twap from uniswapv2.
(uint256 priceCumulative, uint32 blockTimestamp, uint256 twap) = getCurrentTwap();
priceCumulativeLast = priceCumulative;
blockTimestampLast = blockTimestamp;
bool inCircuitBreaker = false;
(
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
) = getNewHotpotBasePerBlock(twap);
farmHotpotBasePerBlock = newFarmHotpotBasePerBlock;
halvingCounter = newHalvingCounter;
uint256 newRedShare = getNewRedShare(twap);
// Do a bunch of things if twap is outside of threshold.
if (!withinDeviationThreshold(twap)) {
uint256 absoluteDeviationMovement = targetPrice.mul(deviationMovement).div(1e18);
// Calculates and sets the new target rate if twap is outside of threshold.
if (twap > targetPrice) {
// no safe math required
upwardCounter++;
if (downwardCounter > 0) {
downwardCounter = 0;
}
// if twap continues to go up, retargetThreshold is only effective for the first upward retarget
// and every following rebase would retarget upward until twap is within deviation threshold
if (upwardCounter >= retargetThreshold) {
targetPrice = targetPrice.add(absoluteDeviationMovement);
}
} else {
inCircuitBreaker = true;
// no safe math required
downwardCounter++;
if (upwardCounter > 0) {
upwardCounter = 0;
}
// if twap continues to go down, retargetThreshold is only effective for the first downward retarget
// and every following rebase would retarget downward until twap is within deviation threshold
if (downwardCounter >= retargetThreshold) {
targetPrice = targetPrice.sub(absoluteDeviationMovement);
}
}
} else {
upwardCounter = 0;
downwardCounter = 0;
}
masterPot.massUpdatePools();
masterPot.setHotpotBasePerBlock(newHotpotBasePerBlock);
masterPot.setRedPotShare(newRedShare);
masterPot.setCircuitBreaker(inCircuitBreaker);
}
/**
* @notice Calculates TWAP from uniswap
*
* @dev When liquidity is low, this can be manipulated by an end of block -> next block
* attack. We delay the activation of rebases 12 hours after liquidity incentives
* to reduce this attack vector. Additional there is very little supply
* to be able to manipulate this during that time period of highest vuln.
*/
function getCurrentTwap()
public
virtual
view
returns (
uint256 priceCumulative,
uint32 blockTimestamp,
uint256 twap
)
{
(
uint256 price0Cumulative,
uint256 price1Cumulative,
uint32 blockTimestampUniswap
) = UniswapV2OracleLibrary.currentCumulativePrices(uniswapPair);
priceCumulative = isToken0 ? price0Cumulative : price1Cumulative;
blockTimestamp = blockTimestampUniswap;
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
// no period check as is done in isRebaseWindow
// overflow is desired, casting never truncates
// cumulative price is in (uq112x112 price * seconds) units so we simply wrap it after division by time elapsed
FixedPoint.uq112x112 memory priceAverage = FixedPoint.uq112x112(
uint224((priceCumulative - priceCumulativeLast) / timeElapsed)
);
// 1e30 for trading pair with 6-decimal tokens. Be ultra-cautious when changing this.
twap = FixedPoint.decode144(FixedPoint.mul(priceAverage, 1e30));
}
// Computes new tokenPerBlock based on price.
function getNewHotpotBasePerBlock(uint256 price)
public
view
returns (
uint256 newHotpotBasePerBlock,
uint256 newFarmHotpotBasePerBlock,
uint256 newHalvingCounter
)
{
uint256 blockElapsed = getBlockNumber().sub(masterPot.startBlock());
newHalvingCounter = blockElapsed.div(halfLife);
newFarmHotpotBasePerBlock = farmHotpotBasePerBlock;
// if new halvingCounter is larger than old one, perform halving.
if (newHalvingCounter > halvingCounter) {
newFarmHotpotBasePerBlock = newFarmHotpotBasePerBlock.div(2);
}
// computes newHotpotBasePerBlock based on targetStock2Flow.
newHotpotBasePerBlock = masterPot.hotpotBaseTotalSupply().div(
targetStock2Flow.mul(2400000)
);
// use the larger of newHotpotBasePerBlock and newFarmHotpotBasePerBlock.
newHotpotBasePerBlock = newHotpotBasePerBlock > newFarmHotpotBasePerBlock
? newHotpotBasePerBlock
: newFarmHotpotBasePerBlock;
if (price > targetPrice) {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(price).div(targetPrice);
} else {
newHotpotBasePerBlock = newHotpotBasePerBlock.mul(targetPrice).div(price);
}
}
// Computes new redShare based on price.
function getNewRedShare(uint256 price) public view returns (uint256) {
return uint256(1e24).div(price.mul(1e12).div(targetPrice).add(1e12));
}
// Check if the current price is within the deviation threshold for rebasing.
function withinDeviationThreshold(uint256 price) public view returns (bool) {
uint256 absoluteDeviationThreshold = targetPrice.mul(deviationThreshold).div(1e18);
return
(price >= targetPrice && price.sub(targetPrice) < absoluteDeviationThreshold) ||
(price < targetPrice && targetPrice.sub(price) < absoluteDeviationThreshold);
}
/**
* @notice Sets the deviation threshold fraction. If the exchange rate given by the market
* oracle is within this fractional distance from the targetPrice, then no supply
* modifications are made.
* @param _deviationThreshold The new exchange rate threshold fraction.
*/
function setDeviationThreshold(uint256 _deviationThreshold) external onlyGov {
require(_deviationThreshold > 0, 'deviationThreshold: too low');
uint256 oldDeviationThreshold = deviationThreshold;
deviationThreshold = _deviationThreshold;
emit NewDeviationThreshold(oldDeviationThreshold, _deviationThreshold);
}
function setDeviationMovement(uint256 _deviationMovement) external onlyGov {
require(_deviationMovement > 0, 'deviationMovement: too low');
uint256 oldDeviationMovement = deviationMovement;
deviationMovement = _deviationMovement;
emit NewDeviationMovement(oldDeviationMovement, _deviationMovement);
}
// Sets the retarget threshold parameter, Gov only.
function setRetargetThreshold(uint256 _retargetThreshold) external onlyGov {
require(_retargetThreshold > 0, 'retargetThreshold: too low');
retargetThreshold = _retargetThreshold;
}
// Overwrites the target stock-to-flow ratio, Gov only.
function setTargetStock2Flow(uint256 _targetStock2Flow) external onlyGov {
require(_targetStock2Flow > 0, 'targetStock2Flow: too low');
targetStock2Flow = _targetStock2Flow;
}
/**
* @notice Sets the parameters which control the timing and frequency of
* rebase operations.
* a) the minimum time period that must elapse between rebase cycles.
* b) the rebase window offset parameter.
* c) the rebase window length parameter.
* @param _minRebaseTimeIntervalSec More than this much time must pass between rebase
* operations, in seconds.
* @param _rebaseWindowOffsetSec The number of seconds from the beginning of
the rebase interval, where the rebase window begins.
* @param _rebaseWindowLengthSec The length of the rebase window in seconds.
*/
function setRebaseTimingParameters(
uint256 _minRebaseTimeIntervalSec,
uint256 _rebaseWindowOffsetSec,
uint256 _rebaseWindowLengthSec
) external onlyGov {
require(_minRebaseTimeIntervalSec > 0, 'minRebaseTimeIntervalSec: too low');
require(
_rebaseWindowOffsetSec < _minRebaseTimeIntervalSec,
'rebaseWindowOffsetSec: too high'
);
minRebaseTimeIntervalSec = _minRebaseTimeIntervalSec;
rebaseWindowOffsetSec = _rebaseWindowOffsetSec;
rebaseWindowLengthSec = _rebaseWindowLengthSec;
}
// Passthrough function to add pool.
function addPool(
uint256 _allocPoint,
IERC20 _lpToken,
bool _isRed,
bool _withUpdate
) public onlyGov {
masterPot.addPool(_allocPoint, _lpToken, _isRed, _withUpdate);
}
// Passthrough function to set pool.
function setPool(
uint256 _pid,
uint256 _allocPoint,
bool _withUpdate
) public onlyGov {
masterPot.setPool(_pid, _allocPoint, _withUpdate);
}
// Passthrough function to set tip rate.
function setTipRate(uint256 _tipRate) public onlyGov {
masterPot.setTipRate(_tipRate);
}
// Passthrough function to transfer pot ownership.
function transferPotOwnership(address newOwner) public onlyGov {
masterPot.transferPotOwnership(newOwner);
}
function getNow() public virtual view returns (uint256) {
return now;
}
function getBlockNumber() public virtual view returns (uint256) {
return block.number;
}
} | withinDeviationThreshold | function withinDeviationThreshold(uint256 price) public view returns (bool) {
uint256 absoluteDeviationThreshold = targetPrice.mul(deviationThreshold).div(1e18);
return
(price >= targetPrice && price.sub(targetPrice) < absoluteDeviationThreshold) ||
(price < targetPrice && targetPrice.sub(price) < absoluteDeviationThreshold);
}
| // Check if the current price is within the deviation threshold for rebasing. | LineComment | v0.6.12+commit.27d51765 | MIT | ipfs://06c3e1b7010ded32c215d8d2b064a338aa716548f7264dc15aba4614175c048f | {
"func_code_index": [
12059,
12406
]
} | 59,660 |
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