Contract Source Code:
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
* @custom:oz-retyped-from bool
*/
uint8 private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint8 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts.
*
* Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
* constructor.
*
* Emits an {Initialized} event.
*/
modifier initializer() {
bool isTopLevelCall = !_initializing;
require(
(isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
"Initializable: contract is already initialized"
);
_initialized = 1;
if (isTopLevelCall) {
_initializing = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* A reinitializer may be used after the original initialization step. This is essential to configure modules that
* are added through upgrades and that require initialization.
*
* When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
* cannot be nested. If one is invoked in the context of another, execution will revert.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*
* WARNING: setting the version to 255 will prevent any future reinitialization.
*
* Emits an {Initialized} event.
*/
modifier reinitializer(uint8 version) {
require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
_initialized = version;
_initializing = true;
_;
_initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
require(_initializing, "Initializable: contract is not initializing");
_;
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*
* Emits an {Initialized} event the first time it is successfully executed.
*/
function _disableInitializers() internal virtual {
require(!_initializing, "Initializable: contract is initializing");
if (_initialized < type(uint8).max) {
_initialized = type(uint8).max;
emit Initialized(type(uint8).max);
}
}
/**
* @dev Internal function that returns the initialized version. Returns `_initialized`
*/
function _getInitializedVersion() internal view returns (uint8) {
return _initialized;
}
/**
* @dev Internal function that returns the initialized version. Returns `_initializing`
*/
function _isInitializing() internal view returns (bool) {
return _initializing;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// 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
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
import '../libraries/Math.sol';
import '../libraries/Constants.sol';
import '../interfaces/IBribeAPI.sol';
import '../interfaces/IGaugeAPI.sol';
import '../interfaces/IGaugeFactory.sol';
import '../interfaces/IERC20.sol';
import '../interfaces/IMinter.sol';
import '../interfaces/IPair.sol';
import '../interfaces/IPairInfo.sol';
import '../interfaces/IPairFactory.sol';
import '../interfaces/IVoter.sol';
import '../interfaces/IVotingEscrow.sol';
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
interface IHypervisor{
function pool() external view returns(address);
function getTotalAmounts() external view returns(uint tot0,uint tot1);
}
interface IAlgebraFactory{
function poolByPair(address, address) external view returns(address);
}
contract PairAPI is Initializable {
struct PairInfo {
// pair info
address pair_address; // pair contract address
uint decimals; // pair decimals
PoolType pooltype; // pair pool type
uint total_supply; // pair tokens supply
// token pair info
address token0; // pair 1st token address
string token0_symbol; // pair 1st token symbol
uint token0_decimals; // pair 1st token decimals
uint reserve0; // pair 1st token reserves (nr. of tokens in the contract)
address token1; // pair 2nd token address
string token1_symbol; // pair 2nd token symbol
uint token1_decimals; // pair 2nd token decimals
uint reserve1; // pair 2nd token reserves (nr. of tokens in the contract)
// pairs gauge
address gauge; // pair gauge address
uint gauge_total_supply; // pair staked tokens (less/eq than/to pair total supply)
address fee; // pair fees contract address
address bribe; // pair bribes contract address
uint emissions; // pair emissions (per second)
address emissions_token; // pair emissions token address
uint emissions_token_decimals; // pair emissions token decimals
}
struct UserInfo {
// User deposit
address pair_address; // pair contract address
uint claimable0; // claimable 1st token from fees (for unstaked positions)
uint claimable1; // claimable 2nd token from fees (for unstaked positions)
uint account_lp_balance; // account LP tokens balance
uint account_gauge_balance; // account pair staked in gauge balance
uint account_gauge_earned; // account earned emissions for this pair
}
struct tokenBribe {
address token;
uint8 decimals;
uint256 amount;
string symbol;
}
struct pairBribeEpoch {
uint256 epochTimestamp;
uint256 totalVotes;
address pair;
tokenBribe[] bribes;
}
// stable/volatile classic x*y=k, CL = conc. liquidity algebra
enum PoolType {STABLE, VOLATILE, CL}
uint256 public constant MAX_PAIRS = 1000;
uint256 public constant MAX_EPOCHS = 200;
uint256 public constant MAX_REWARDS = 16;
IPairFactory public pairFactory;
IAlgebraFactory public algebraFactory;
IVoter public voter;
address public underlyingToken;
address public owner;
event Owner(address oldOwner, address newOwner);
event Voter(address oldVoter, address newVoter);
event WBF(address oldWBF, address newWBF);
constructor() {}
function initialize(address _voter, address _algebraFactory) initializer public {
owner = msg.sender;
voter = IVoter(_voter);
pairFactory = IPairFactory(voter.factory());
underlyingToken = IVotingEscrow(voter._ve()).token();
algebraFactory = IAlgebraFactory(_algebraFactory);
}
// valid only for sAMM and vAMM
function getAllPair(uint _amounts, uint _offset) external view returns(PairInfo[] memory Pairs){
require(_amounts <= MAX_PAIRS, 'too many pair');
Pairs = new PairInfo[](_amounts);
uint i = _offset;
uint totPairs = pairFactory.allPairsLength();
address _pair;
for(i; i < _offset + _amounts; i++){
// if totalPairs is reached, break.
if(i == totPairs) {
break;
}
_pair = pairFactory.allPairs(i);
Pairs[i - _offset] = _pairAddressToInfo(_pair);
}
}
function getMultiplePair(address[] calldata pairs) external view returns(PairInfo[] memory Pairs){
require(pairs.length <= MAX_PAIRS, 'too many pair');
Pairs = new PairInfo[](pairs.length );
address _pair;
for(uint256 i = 0; i < pairs.length; i++){
_pair = pairs[i];
Pairs[i] = _pairAddressToInfo(_pair);
}
}
function getPairAccount(address _pair, address _account) external view returns(UserInfo memory _UserInfo){
return _pairAddressForAccount(_pair, _account);
}
// backward compatibility
function getPair(address _pair, address /*account*/) external view returns(PairInfo memory _PairInfo){
return _pairAddressToInfo(_pair);
}
function getPairSingle(address _pair) external view returns(PairInfo memory _PairInfo){
return _pairAddressToInfo(_pair);
}
function _pairAddressForAccount(address _pair, address _account) internal view returns(UserInfo memory _UserInfo) {
IPair ipair = IPair(_pair);
IGaugeAPI _gauge = IGaugeAPI(voter.gauges(_pair));
uint accountGaugeLPAmount = 0;
uint earned = 0;
if(address(_gauge) != address(0)){
if(_account != address(0)){
accountGaugeLPAmount = _gauge.balanceOf(_account);
earned = _gauge.earned(_account);
} else {
accountGaugeLPAmount = 0;
earned = 0;
}
}
// checkout is v2 or v3? if v3 then load algebra pool
bool _type = IPairFactory(pairFactory).isPair(_pair);
// Account Info
_UserInfo.pair_address = _pair;
_UserInfo.claimable0 = _type == false ? 0 : ipair.claimable0(_account);
_UserInfo.claimable1 = _type == false ? 0 : ipair.claimable1(_account);
_UserInfo.account_lp_balance = IERC20(_pair).balanceOf(_account);
_UserInfo.account_gauge_balance = accountGaugeLPAmount;
_UserInfo.account_gauge_earned = earned;
}
function _pairAddressToInfo(address _pair) internal view returns(PairInfo memory _PairInfo) {
IPair ipair = IPair(_pair);
address token_0 = ipair.token0();
address token_1 = ipair.token1();
uint r0;
uint r1;
// checkout is v2 or v3? if v3 then load algebra pool
bool _type = IPairFactory(pairFactory).isPair(_pair);
PoolType _pooltype;
if(_type == false){
// hypervisor totalAmounts = algebra.pool + gamma.unused
(r0,r1) = IHypervisor(_pair).getTotalAmounts();
_pooltype = PoolType(2);
} else {
(r0,r1,) = ipair.getReserves();
_pooltype = ipair.isStable() == true ? PoolType(0) : PoolType(1);
}
IGaugeAPI _gauge = IGaugeAPI(voter.gauges(_pair));
uint gaugeTotalSupply = 0;
uint emissions = 0;
if(address(_gauge) != address(0)){
gaugeTotalSupply = _gauge.totalSupply();
emissions = _gauge.rewardRate();
}
// Pair General Info
_PairInfo.pair_address = _pair;
_PairInfo.decimals = ipair.decimals();
_PairInfo.pooltype = _pooltype;
_PairInfo.total_supply = ipair.totalSupply();
// Token0 Info
_PairInfo.token0 = token_0;
_PairInfo.token0_decimals = IERC20(token_0).decimals();
_PairInfo.token0_symbol = IERC20(token_0).symbol();
_PairInfo.reserve0 = r0;
// Token1 Info
_PairInfo.token1 = token_1;
_PairInfo.token1_decimals = IERC20(token_1).decimals();
_PairInfo.token1_symbol = IERC20(token_1).symbol();
_PairInfo.reserve1 = r1;
// Pair's gauge Info
_PairInfo.gauge = address(_gauge);
_PairInfo.gauge_total_supply = gaugeTotalSupply;
_PairInfo.emissions = emissions;
_PairInfo.emissions_token = underlyingToken;
_PairInfo.emissions_token_decimals = IERC20(underlyingToken).decimals();
// external address
_PairInfo.fee = voter.internal_bribes(address(_gauge));
_PairInfo.bribe = voter.external_bribes(address(_gauge));
}
function getPairBribe(uint _amounts, uint _offset, address _pair) external view returns(pairBribeEpoch[] memory _pairEpoch){
require(_amounts <= MAX_EPOCHS, 'too many epochs');
_pairEpoch = new pairBribeEpoch[](_amounts);
address _gauge = voter.gauges(_pair);
if(_gauge == address(0)) return _pairEpoch;
IBribeAPI bribe = IBribeAPI(voter.external_bribes(_gauge));
// check bribe and checkpoints exists
if(address(0) == address(bribe)) return _pairEpoch;
// scan bribes
// get latest balance and epoch start for bribes
uint _epochStartTimestamp = bribe.firstBribeTimestamp();
// if 0 then no bribe created so far
if(_epochStartTimestamp == 0){
return _pairEpoch;
}
uint _supply;
uint i = _offset;
for(i; i < _offset + _amounts; i++){
_supply = bribe.totalSupplyAt(_epochStartTimestamp);
_pairEpoch[i-_offset].epochTimestamp = _epochStartTimestamp;
_pairEpoch[i-_offset].pair = _pair;
_pairEpoch[i-_offset].totalVotes = _supply;
_pairEpoch[i-_offset].bribes = _bribe(_epochStartTimestamp, address(bribe));
_epochStartTimestamp += Constants.EPOCH_LENGTH;
}
}
function _bribe(uint _ts, address _br) internal view returns(tokenBribe[] memory _tb){
IBribeAPI _wb = IBribeAPI(_br);
uint tokenLen = _wb.rewardsListLength();
_tb = new tokenBribe[](tokenLen);
uint k;
uint _rewPerEpoch;
IERC20 _t;
for(k = 0; k < tokenLen; k++){
_t = IERC20(_wb.rewardTokens(k));
IBribeAPI.Reward memory _reward = _wb.rewardData(address(_t), _ts);
_rewPerEpoch = _reward.rewardsPerEpoch;
if(_rewPerEpoch > 0){
_tb[k].token = address(_t);
_tb[k].symbol = _t.symbol();
_tb[k].decimals = _t.decimals();
_tb[k].amount = _rewPerEpoch;
} else {
_tb[k].token = address(_t);
_tb[k].symbol = _t.symbol();
_tb[k].decimals = _t.decimals();
_tb[k].amount = 0;
}
}
}
function setOwner(address _owner) external {
require(msg.sender == owner, 'not owner');
require(_owner != address(0), 'zeroAddr');
owner = _owner;
emit Owner(msg.sender, _owner);
}
function setVoter(address _voter) external {
require(msg.sender == owner, 'not owner');
require(_voter != address(0), 'zeroAddr');
address _oldVoter = address(voter);
voter = IVoter(_voter);
// update variable depending on voter
pairFactory = IPairFactory(voter.factory());
underlyingToken = IVotingEscrow(voter._ve()).token();
emit Voter(_oldVoter, _voter);
}
function left(address _pair, address _token) external view returns(uint256 _rewPerEpoch){
address _gauge = voter.gauges(_pair);
IBribeAPI bribe = IBribeAPI(voter.internal_bribes(_gauge));
uint256 _ts = bribe.getEpochStart();
IBribeAPI.Reward memory _reward = bribe.rewardData(_token, _ts);
_rewPerEpoch = _reward.rewardsPerEpoch;
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IBribeAPI {
struct Reward {
uint256 periodFinish;
uint256 rewardsPerEpoch;
uint256 lastUpdateTime;
}
function rewardData(address _token, uint256 ts) external view returns(Reward memory _Reward);
function _deposit(uint amount, uint tokenId) external;
function _withdraw(uint amount, uint tokenId) external;
function getRewardForOwner(uint tokenId, address[] memory tokens) external;
function notifyRewardAmount(address token, uint amount) external;
function left(address token) external view returns (uint);
function rewardsListLength() external view returns (uint);
function supplyNumCheckpoints() external view returns (uint);
//function getEpochStart(uint timestamp) external pure returns (uint);
function getEpochStart() external pure returns (uint);
function getNextEpochStart() external pure returns (uint);
function getPriorSupplyIndex(uint timestamp) external view returns (uint);
function rewardTokens(uint index) external view returns (address);
function rewardsPerEpoch(address token,uint ts) external view returns (uint);
function supplyCheckpoints(uint _index) external view returns(uint timestamp, uint supplyd);
function earned(uint tokenId, address token) external view returns (uint);
function earned(address user, address token) external view returns (uint);
function firstBribeTimestamp() external view returns(uint);
function totalSupplyAt(uint256 _timestamp) external view returns (uint256);
function balanceOfAt(uint256 tokenId, uint256 _timestamp) external view returns (uint256);
function balanceOfOwnerAt(address _owner, uint256 _timestamp) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IERC20 {
function totalSupply() external view returns (uint256);
function transfer(address recipient, uint amount) external returns (bool);
function decimals() external view returns (uint8);
function symbol() external view returns (string memory);
function balanceOf(address) external view returns (uint);
function transferFrom(address sender, address recipient, uint amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IGaugeAPI {
function notifyRewardAmount(address token, uint amount) external;
function getReward(address account, address[] memory tokens) external;
function claimFees() external returns (uint claimed0, uint claimed1);
function left(address token) external view returns (uint);
function rewardRate() external view returns (uint);
function balanceOf(address _account) external view returns (uint);
function isForPair() external view returns (bool);
function totalSupply() external view returns (uint);
function earned(address account) external view returns (uint);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IGaugeFactory {
function createGauge(address, address, address, address, bool, address[] memory) external returns (address);
function createGaugeV2(address _rewardToken,address _ve,address _token,address _distribution, address _internal_bribe, address _external_bribe, bool _isPair) external returns (address) ;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IMinter {
function update_period() external returns (uint);
function check() external view returns(bool);
function period() external view returns(uint);
function active_period() external view returns(uint);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IPair {
function metadata() external view returns (uint dec0, uint dec1, uint r0, uint r1, bool st, address t0, address t1);
function claimFees() external returns (uint, uint);
function tokens() external view returns (address, address);
function token0() external view returns (address);
function token1() external view returns (address);
function transferFrom(address src, address dst, uint amount) external returns (bool);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function burn(address to) external returns (uint amount0, uint amount1);
function mint(address to) external returns (uint liquidity);
function getReserves() external view returns (uint _reserve0, uint _reserve1, uint _blockTimestampLast);
function getAmountOut(uint, address) external view returns (uint);
function name() external view returns(string memory);
function symbol() external view returns(string memory);
function totalSupply() external view returns (uint);
function decimals() external view returns (uint8);
function claimable0(address _user) external view returns (uint);
function claimable1(address _user) external view returns (uint);
function isStable() external view returns(bool);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IPairFactory {
function allPairsLength() external view returns (uint);
function isPair(address pair) external view returns (bool);
function allPairs(uint index) external view returns (address);
function stakingFeeHandler() external view returns (address);
function dibs() external view returns (address);
function MAX_TREASURY_FEE() external view returns (uint256);
function stakingNFTFee() external view returns (uint256);
function isPaused() external view returns (bool);
function pairCodeHash() external pure returns (bytes32);
function getPair(address tokenA, address token, bool stable) external view returns (address);
function createPair(address tokenA, address tokenB, bool stable) external returns (address pair);
function getInitializable() external view returns (address, address, bool);
function getFee(bool _stable) external view returns(uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IPairInfo {
function token0() external view returns(address);
function reserve0() external view returns(uint);
function decimals0() external view returns(uint);
function token1() external view returns(address);
function reserve1() external view returns(uint);
function decimals1() external view returns(uint);
function isPair(address _pair) external view returns(bool);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IVoter {
function _ve() external view returns (address);
function gauges(address _pair) external view returns (address);
function isGauge(address _gauge) external view returns (bool);
function poolForGauge(address _gauge) external view returns (address);
function factory() external view returns (address);
function minter() external view returns(address);
function isWhitelisted(address token) external view returns (bool);
function notifyRewardAmount(uint amount) external;
function distributeAll() external;
function distributeFees(address[] memory _gauges) external;
function internal_bribes(address _gauge) external view returns (address);
function external_bribes(address _gauge) external view returns (address);
function usedWeights(uint id) external view returns(uint);
function lastVoted(uint id) external view returns(uint);
function poolVote(uint id, uint _index) external view returns(address _pair);
function votes(uint id, address _pool) external view returns(uint votes);
function poolVoteLength(uint tokenId) external view returns(uint);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
interface IVotingEscrow {
struct Point {
int128 bias;
int128 slope; // # -dweight / dt
uint256 ts;
uint256 blk; // block
}
struct LockedBalance {
int128 amount;
uint start;
uint end;
}
function create_lock_for(uint _value, uint _lock_duration, address _to) external returns (uint);
function locked(uint id) external view returns(LockedBalance memory);
function tokenOfOwnerByIndex(address _owner, uint _tokenIndex) external view returns (uint);
function token() external view returns (address);
function team() external returns (address);
function epoch() external view returns (uint);
function point_history(uint loc) external view returns (Point memory);
function user_point_history(uint tokenId, uint loc) external view returns (Point memory);
function user_point_epoch(uint tokenId) external view returns (uint);
function ownerOf(uint) external view returns (address);
function isApprovedOrOwner(address, uint) external view returns (bool);
function transferFrom(address, address, uint) external;
function voted(uint) external view returns (bool);
function attachments(uint) external view returns (uint);
function voting(uint tokenId) external;
function abstain(uint tokenId) external;
function attach(uint tokenId) external;
function detach(uint tokenId) external;
function checkpoint() external;
function deposit_for(uint tokenId, uint value) external;
function balanceOfAtNFT(uint _tokenId, uint _block) external view returns (uint);
function balanceOfNFT(uint _id) external view returns (uint);
function balanceOf(address _owner) external view returns (uint);
function totalSupply() external view returns (uint);
function supply() external view returns (uint);
function decimals() external view returns(uint8);
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
library Constants {
uint256 internal constant EPOCH_LENGTH = 12 hours;//7 days;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;
library Math {
function max(uint a, uint b) internal pure returns (uint) {
return a >= b ? a : b;
}
function min(uint a, uint b) internal pure returns (uint) {
return a < b ? a : b;
}
function sqrt(uint y) internal pure returns (uint z) {
if (y > 3) {
z = y;
uint x = y / 2 + 1;
while (x < z) {
z = x;
x = (y / x + x) / 2;
}
} else if (y != 0) {
z = 1;
}
}
function cbrt(uint256 n) internal pure returns (uint256) { unchecked {
uint256 x = 0;
for (uint256 y = 1 << 255; y > 0; y >>= 3) {
x <<= 1;
uint256 z = 3 * x * (x + 1) + 1;
if (n / y >= z) {
n -= y * z;
x += 1;
}
}
return x;
}}
}