{"file_path":"lib/mento-core-2.2.0/contracts/oracles/breakers/MedianDeltaBreaker.sol","creation_status":"success","source_code":"// SPDX-License-Identifier: GPL-3.0-or-later\npragma solidity ^0.5.13;\n\nimport { Ownable } from \"openzeppelin-solidity/contracts/ownership/Ownable.sol\";\nimport { SafeMath } from \"openzeppelin-solidity/contracts/math/SafeMath.sol\";\n\nimport { FixidityLib } from \"../../common/FixidityLib.sol\";\nimport { IBreaker } from \"../../interfaces/IBreaker.sol\";\nimport { ISortedOracles } from \"../../interfaces/ISortedOracles.sol\";\n\nimport { WithCooldown } from \"./WithCooldown.sol\";\nimport { WithThreshold } from \"./WithThreshold.sol\";\n\n/**\n * @title Median Delta Breaker\n * @notice Breaker contract that will trigger when an updated oracle median rate changes\n * more than a configured relative threshold from the previous one. If this\n * breaker is triggered for a rate feed it should be set to no trading mode.\n */\ncontract MedianDeltaBreaker is IBreaker, WithCooldown, WithThreshold, Ownable {\n using SafeMath for uint256;\n using FixidityLib for FixidityLib.Fraction;\n\n /* ==================== Events ==================== */\n event SmoothingFactorSet(address rateFeedId, uint256 smoothingFactor);\n event BreakerBoxUpdated(address breakerBox);\n\n event MedianRateEMAReset(address rateFeedID);\n\n /* ==================== State Variables ==================== */\n // Address of the Mento SortedOracles contract\n ISortedOracles public sortedOracles;\n\n // Address of the BreakerBox contract\n address public breakerBox;\n\n // Default smoothing factor for EMA as a Fixidity value\n uint256 public constant DEFAULT_SMOOTHING_FACTOR = 1e24;\n\n // Smoothing factor per rate feed\n mapping(address => FixidityLib.Fraction) public smoothingFactors;\n\n // EMA of the median rates per rate feed\n mapping(address => uint256) public medianRatesEMA;\n\n /* ==================== Constructor ==================== */\n\n constructor(\n uint256 _defaultCooldownTime,\n uint256 _defaultRateChangeThreshold,\n ISortedOracles _sortedOracles,\n address _breakerBox,\n address[] memory rateFeedIDs,\n uint256[] memory rateChangeThresholds,\n uint256[] memory cooldownTimes\n ) public {\n _transferOwnership(msg.sender);\n setSortedOracles(_sortedOracles);\n setBreakerBox(_breakerBox);\n\n _setDefaultCooldownTime(_defaultCooldownTime);\n _setDefaultRateChangeThreshold(_defaultRateChangeThreshold);\n _setRateChangeThresholds(rateFeedIDs, rateChangeThresholds);\n _setCooldownTimes(rateFeedIDs, cooldownTimes);\n }\n\n /* ==================== Restricted Functions ==================== */\n\n /**\n * @notice Sets the cooldown time to the specified value for a rate feed.\n * @param rateFeedIDs the targeted rate feed.\n * @param cooldownTimes The new cooldownTime value.\n * @dev Should be set to 0 to force a manual reset.\n */\n function setCooldownTime(address[] calldata rateFeedIDs, uint256[] calldata cooldownTimes) external onlyOwner {\n _setCooldownTimes(rateFeedIDs, cooldownTimes);\n }\n\n /**\n * @notice Sets the cooldownTime to the specified value for a rate feed.\n * @param cooldownTime The new cooldownTime value.\n * @dev Should be set to 0 to force a manual reset.\n */\n function setDefaultCooldownTime(uint256 cooldownTime) external onlyOwner {\n _setDefaultCooldownTime(cooldownTime);\n }\n\n /**\n * @notice Sets rateChangeThreshold.\n * @param _defaultRateChangeThreshold The new rateChangeThreshold value.\n */\n function setDefaultRateChangeThreshold(uint256 _defaultRateChangeThreshold) external onlyOwner {\n _setDefaultRateChangeThreshold(_defaultRateChangeThreshold);\n }\n\n /**\n * @notice Configures rate feed to rate threshold pairs.\n * @param rateFeedIDs Collection of the addresses rate feeds.\n * @param rateChangeThresholds Collection of the rate thresholds.\n */\n function setRateChangeThresholds(address[] calldata rateFeedIDs, uint256[] calldata rateChangeThresholds)\n external\n onlyOwner\n {\n _setRateChangeThresholds(rateFeedIDs, rateChangeThresholds);\n }\n\n /**\n * @notice Sets the address of the sortedOracles contract.\n * @param _sortedOracles The new address of the sorted oracles contract.\n */\n function setSortedOracles(ISortedOracles _sortedOracles) public onlyOwner {\n require(address(_sortedOracles) != address(0), \"SortedOracles address must be set\");\n sortedOracles = _sortedOracles;\n emit SortedOraclesUpdated(address(_sortedOracles));\n }\n\n /**\n * @notice Sets the address of the BreakerBox contract.\n * @param _breakerBox The new address of the breaker box contract.\n */\n function setBreakerBox(address _breakerBox) public onlyOwner {\n require(_breakerBox != address(0), \"BreakerBox address must be set\");\n breakerBox = _breakerBox;\n emit BreakerBoxUpdated(_breakerBox);\n }\n\n /*\n * @notice Sets the smoothing factor for a rate feed.\n * @param rateFeedID The rate feed to be updated.\n * @param smoothingFactor The new smoothingFactor value.\n */\n function setSmoothingFactor(address rateFeedID, uint256 newSmoothingFactor) external onlyOwner {\n FixidityLib.Fraction memory _newSmoothingFactor = FixidityLib.wrap(newSmoothingFactor);\n require(_newSmoothingFactor.lte(FixidityLib.fixed1()), \"Smoothing factor must be <= 1\");\n smoothingFactors[rateFeedID] = _newSmoothingFactor;\n emit SmoothingFactorSet(rateFeedID, newSmoothingFactor);\n }\n\n /**\n * @notice Resets the median rates EMA for a rate feed.\n * @param rateFeedID the targeted rate feed.\n * @dev Should be called when the breaker is disabled for a rate feed.\n */\n function resetMedianRateEMA(address rateFeedID) external onlyOwner {\n require(rateFeedID != address(0), \"RateFeed address must be set\");\n medianRatesEMA[rateFeedID] = 0;\n emit MedianRateEMAReset(rateFeedID);\n }\n\n /* ==================== View Functions ==================== */\n\n /**\n * @notice Get the smoothing factor for a rate feed.\n * @param rateFeedID The rate feed to be checked.\n * @return smoothingFactor The smoothingFactor for the rate feed.\n */\n function getSmoothingFactor(address rateFeedID) public view returns (uint256) {\n uint256 factor = smoothingFactors[rateFeedID].unwrap();\n if (factor == 0) {\n return DEFAULT_SMOOTHING_FACTOR;\n }\n return factor;\n }\n\n /**\n * @notice Check if the current median report rate for a rate feed change, relative\n * to the last median report, is greater than the configured threshold.\n * If the change is greater than the threshold the breaker will be triggered.\n * @param rateFeedID The rate feed to be checked.\n * @return triggerBreaker A bool indicating whether or not this breaker\n * should be tripped for the rate feed.\n */\n function shouldTrigger(address rateFeedID) public returns (bool triggerBreaker) {\n require(msg.sender == breakerBox, \"Caller must be the BreakerBox contract\");\n\n (uint256 currentMedian, ) = sortedOracles.medianRate(rateFeedID);\n\n uint256 previousRatesEMA = medianRatesEMA[rateFeedID];\n if (previousRatesEMA == 0) {\n // Previous recorded EMA will be 0 the first time this rate feed is checked.\n medianRatesEMA[rateFeedID] = currentMedian;\n return false;\n }\n\n FixidityLib.Fraction memory smoothingFactor = FixidityLib.wrap(getSmoothingFactor(rateFeedID));\n medianRatesEMA[rateFeedID] = FixidityLib\n .wrap(currentMedian)\n .multiply(smoothingFactor)\n .add(FixidityLib.wrap(previousRatesEMA).multiply(FixidityLib.fixed1().subtract(smoothingFactor)))\n .unwrap();\n\n return exceedsThreshold(previousRatesEMA, currentMedian, rateFeedID);\n }\n\n /**\n * @notice Checks whether or not the conditions have been met\n * for the specifed rate feed to be reset.\n * @return resetBreaker A bool indicating whether or not\n * this breaker can be reset for the given rate feed.\n */\n function shouldReset(address rateFeedID) external returns (bool resetBreaker) {\n return !shouldTrigger(rateFeedID);\n 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solidity ^0.5.0;\n\n/*\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with GSN meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\ncontract Context {\n // Empty internal constructor, to prevent people from mistakenly deploying\n // an instance of this contract, which should be used via inheritance.\n constructor () internal { }\n // solhint-disable-previous-line no-empty-blocks\n\n function _msgSender() internal view returns (address payable) {\n return msg.sender;\n }\n\n function _msgData() internal view returns (bytes memory) {\n this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\n return msg.data;\n }\n}\n"},{"file_path":"lib/mento-core-2.0.0/lib/openzeppelin-contracts/contracts/math/SafeMath.sol","source_code":"pragma solidity ^0.5.0;\n\n/**\n * @dev Wrappers over Solidity's arithmetic operations with added overflow\n * checks.\n *\n * Arithmetic operations in Solidity wrap on overflow. This can easily result\n * in bugs, because programmers usually assume that an overflow raises an\n * error, which is the standard behavior in high level programming languages.\n * `SafeMath` restores this intuition by reverting the transaction when an\n * operation overflows.\n *\n * Using this library instead of the unchecked operations eliminates an entire\n * class of bugs, so it's recommended to use it always.\n */\nlibrary SafeMath {\n /**\n * @dev Returns the addition of two unsigned integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `+` operator.\n *\n * Requirements:\n * - Addition cannot overflow.\n */\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n /**\n * @dev Returns the subtraction of two unsigned integers, reverting on\n * overflow (when the result is negative).\n *\n * Counterpart to Solidity's `-` operator.\n *\n * Requirements:\n * - Subtraction cannot overflow.\n */\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n /**\n * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\n * overflow (when the result is negative).\n *\n * Counterpart to Solidity's `-` operator.\n *\n * Requirements:\n * - Subtraction cannot overflow.\n *\n * _Available since v2.4.0._\n */\n function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n uint256 c = a - b;\n\n return c;\n }\n\n /**\n * @dev Returns the multiplication of two unsigned integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `*` operator.\n *\n * Requirements:\n * - Multiplication cannot overflow.\n */\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n // benefit is lost if 'b' is also tested.\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n /**\n * @dev Returns the integer division of two unsigned integers. Reverts on\n * division by zero. The result is rounded towards zero.\n *\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n * uses an invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n * - The divisor cannot be zero.\n */\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n /**\n * @dev Returns the integer division of two unsigned integers. Reverts with custom message on\n * division by zero. The result is rounded towards zero.\n *\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n * uses an invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n * - The divisor cannot be zero.\n *\n * _Available since v2.4.0._\n */\n function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n // Solidity only automatically asserts when dividing by 0\n require(b > 0, errorMessage);\n uint256 c = a / b;\n // assert(a == b * c + a % b); // There is no case in which this doesn't hold\n\n return c;\n }\n\n /**\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n * Reverts when dividing by zero.\n *\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n * invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n * - The divisor cannot be zero.\n */\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return mod(a, b, \"SafeMath: modulo by zero\");\n }\n\n /**\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n * Reverts with custom message when dividing by zero.\n *\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n * invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n * - The divisor cannot be zero.\n *\n * _Available since v2.4.0._\n */\n function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {\n require(b != 0, errorMessage);\n return a % b;\n }\n}\n"},{"file_path":"lib/mento-core-2.0.0/lib/openzeppelin-contracts/contracts/ownership/Ownable.sol","source_code":"pragma solidity ^0.5.0;\n\nimport \"../GSN/Context.sol\";\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n /**\n * @dev Initializes the contract setting the deployer as the initial owner.\n */\n constructor () internal {\n address msgSender = _msgSender();\n _owner = msgSender;\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n /**\n * @dev Returns the address of the current owner.\n */\n function owner() public view returns (address) {\n return _owner;\n }\n\n /**\n * @dev Throws if called by any account other than the owner.\n */\n modifier onlyOwner() {\n require(isOwner(), \"Ownable: caller is not the owner\");\n _;\n }\n\n /**\n * @dev Returns true if the caller is the current owner.\n */\n function isOwner() public view returns (bool) {\n return _msgSender() == _owner;\n }\n\n /**\n * @dev Leaves the contract without owner. It will not be possible to call\n * `onlyOwner` functions anymore. Can only be called by the current owner.\n *\n * NOTE: Renouncing ownership will leave the contract without an owner,\n * thereby removing any functionality that is only available to the owner.\n */\n function renounceOwnership() public onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n _owner = address(0);\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n * Can only be called by the current owner.\n */\n function transferOwnership(address newOwner) public onlyOwner {\n _transferOwnership(newOwner);\n }\n\n /**\n * @dev Transfers ownership of the contract to a new account (`newOwner`).\n */\n function _transferOwnership(address newOwner) internal {\n require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n emit OwnershipTransferred(_owner, newOwner);\n _owner = newOwner;\n }\n}\n"},{"file_path":"lib/mento-core-2.2.0/contracts/common/FixidityLib.sol","source_code":"pragma solidity ^0.5.13;\n\n/**\n * @title FixidityLib\n * @author Gadi Guy, Alberto Cuesta Canada\n * @notice This library provides fixed point arithmetic with protection against\n * overflow.\n * All operations are done with uint256 and the operands must have been created\n * with any of the newFrom* functions, which shift the comma digits() to the\n * right and check for limits, or with wrap() which expects a number already\n * in the internal representation of a fraction.\n * When using this library be sure to use maxNewFixed() as the upper limit for\n * creation of fixed point numbers.\n * @dev All contained functions are pure and thus marked internal to be inlined\n * on consuming contracts at compile time for gas efficiency.\n */\nlibrary FixidityLib {\n struct Fraction {\n uint256 value;\n }\n\n /**\n * @notice Number of positions that the comma is shifted to the right.\n */\n function digits() internal pure returns (uint8) {\n return 24;\n }\n\n uint256 private constant FIXED1_UINT = 1000000000000000000000000;\n\n /**\n * @notice This is 1 in the fixed point units used in this library.\n * @dev Test fixed1() equals 10^digits()\n * Hardcoded to 24 digits.\n */\n function fixed1() internal pure returns (Fraction memory) {\n return Fraction(FIXED1_UINT);\n }\n\n /**\n * @notice Wrap a uint256 that represents a 24-decimal fraction in a Fraction\n * struct.\n * @param x Number that already represents a 24-decimal fraction.\n * @return A Fraction struct with contents x.\n */\n function wrap(uint256 x) internal pure returns (Fraction memory) {\n return Fraction(x);\n }\n\n /**\n * @notice Unwraps the uint256 inside of a Fraction struct.\n */\n function unwrap(Fraction memory x) internal pure returns (uint256) {\n return x.value;\n }\n\n /**\n * @notice The amount of decimals lost on each multiplication operand.\n * @dev Test mulPrecision() equals sqrt(fixed1)\n */\n function mulPrecision() internal pure returns (uint256) {\n return 1000000000000;\n }\n\n /**\n * @notice Maximum value that can be converted to fixed point. Optimize for deployment.\n * @dev\n * Test maxNewFixed() equals maxUint256() / fixed1()\n */\n function maxNewFixed() internal pure returns (uint256) {\n return 115792089237316195423570985008687907853269984665640564;\n }\n\n /**\n * @notice Converts a uint256 to fixed point Fraction\n * @dev Test newFixed(0) returns 0\n * Test newFixed(1) returns fixed1()\n * Test newFixed(maxNewFixed()) returns maxNewFixed() * fixed1()\n * Test newFixed(maxNewFixed()+1) fails\n */\n function newFixed(uint256 x) internal pure returns (Fraction memory) {\n require(x <= maxNewFixed(), \"can't create fixidity number larger than maxNewFixed()\");\n return Fraction(x * FIXED1_UINT);\n }\n\n /**\n * @notice Converts a uint256 in the fixed point representation of this\n * library to a non decimal. All decimal digits will be truncated.\n */\n function fromFixed(Fraction memory x) internal pure returns (uint256) {\n return x.value / FIXED1_UINT;\n }\n\n /**\n * @notice Converts two uint256 representing a fraction to fixed point units,\n * equivalent to multiplying dividend and divisor by 10^digits().\n * @param numerator numerator must be <= maxNewFixed()\n * @param denominator denominator must be <= maxNewFixed() and denominator can't be 0\n * @dev\n * Test newFixedFraction(1,0) fails\n * Test newFixedFraction(0,1) returns 0\n * Test newFixedFraction(1,1) returns fixed1()\n * Test newFixedFraction(1,fixed1()) returns 1\n */\n function newFixedFraction(uint256 numerator, uint256 denominator) internal pure returns (Fraction memory) {\n Fraction memory convertedNumerator = newFixed(numerator);\n Fraction memory convertedDenominator = newFixed(denominator);\n return divide(convertedNumerator, convertedDenominator);\n }\n\n /**\n * @notice Returns the integer part of a fixed point number.\n * @dev\n * Test integer(0) returns 0\n * Test integer(fixed1()) returns fixed1()\n * Test integer(newFixed(maxNewFixed())) returns maxNewFixed()*fixed1()\n */\n function integer(Fraction memory x) internal pure returns (Fraction memory) {\n return Fraction((x.value / FIXED1_UINT) * FIXED1_UINT); // Can't overflow\n }\n\n /**\n * @notice Returns the fractional part of a fixed point number.\n * In the case of a negative number the fractional is also negative.\n * @dev\n * Test fractional(0) returns 0\n * Test fractional(fixed1()) returns 0\n * Test fractional(fixed1()-1) returns 10^24-1\n */\n function fractional(Fraction memory x) internal pure returns (Fraction memory) {\n return Fraction(x.value - (x.value / FIXED1_UINT) * FIXED1_UINT); // Can't overflow\n }\n\n /**\n * @notice x+y.\n * @dev The maximum value that can be safely used as an addition operator is defined as\n * maxFixedAdd = maxUint256()-1 / 2, or\n * 57896044618658097711785492504343953926634992332820282019728792003956564819967.\n * Test add(maxFixedAdd,maxFixedAdd) equals maxFixedAdd + maxFixedAdd\n * Test add(maxFixedAdd+1,maxFixedAdd+1) throws\n */\n function add(Fraction memory x, Fraction memory y) internal pure returns (Fraction memory) {\n uint256 z = x.value + y.value;\n require(z >= x.value, \"add overflow detected\");\n return Fraction(z);\n }\n\n /**\n * @notice x-y.\n * @dev\n * Test subtract(6, 10) fails\n */\n function subtract(Fraction memory x, Fraction memory y) internal pure returns (Fraction memory) {\n require(x.value >= y.value, \"substraction underflow detected\");\n return Fraction(x.value - y.value);\n }\n\n /**\n * @notice x*y. If any of the operators is higher than the max multiplier value it\n * might overflow.\n * @dev The maximum value that can be safely used as a multiplication operator\n * (maxFixedMul) is calculated as sqrt(maxUint256()*fixed1()),\n * or 340282366920938463463374607431768211455999999999999\n * Test multiply(0,0) returns 0\n * Test multiply(maxFixedMul,0) returns 0\n * Test multiply(0,maxFixedMul) returns 0\n * Test multiply(fixed1()/mulPrecision(),fixed1()*mulPrecision()) returns fixed1()\n * Test multiply(maxFixedMul,maxFixedMul) is around maxUint256()\n * Test multiply(maxFixedMul+1,maxFixedMul+1) fails\n */\n // solhint-disable-next-line code-complexity\n function multiply(Fraction memory x, Fraction memory y) internal pure returns (Fraction memory) {\n if (x.value == 0 || y.value == 0) return Fraction(0);\n if (y.value == FIXED1_UINT) return x;\n if (x.value == FIXED1_UINT) return y;\n\n // Separate into integer and fractional parts\n // x = x1 + x2, y = y1 + y2\n uint256 x1 = integer(x).value / FIXED1_UINT;\n uint256 x2 = fractional(x).value;\n uint256 y1 = integer(y).value / FIXED1_UINT;\n uint256 y2 = fractional(y).value;\n\n // (x1 + x2) * (y1 + y2) = (x1 * y1) + (x1 * y2) + (x2 * y1) + (x2 * y2)\n uint256 x1y1 = x1 * y1;\n if (x1 != 0) require(x1y1 / x1 == y1, \"overflow x1y1 detected\");\n\n // x1y1 needs to be multiplied back by fixed1\n // solhint-disable-next-line var-name-mixedcase\n uint256 fixed_x1y1 = x1y1 * FIXED1_UINT;\n if (x1y1 != 0) require(fixed_x1y1 / x1y1 == FIXED1_UINT, \"overflow x1y1 * fixed1 detected\");\n x1y1 = fixed_x1y1;\n\n uint256 x2y1 = x2 * y1;\n if (x2 != 0) require(x2y1 / x2 == y1, \"overflow x2y1 detected\");\n\n uint256 x1y2 = x1 * y2;\n if (x1 != 0) require(x1y2 / x1 == y2, \"overflow x1y2 detected\");\n\n x2 = x2 / mulPrecision();\n y2 = y2 / mulPrecision();\n uint256 x2y2 = x2 * y2;\n if (x2 != 0) require(x2y2 / x2 == y2, \"overflow x2y2 detected\");\n\n // result = fixed1() * x1 * y1 + x1 * y2 + x2 * y1 + x2 * y2 / fixed1();\n Fraction memory result = Fraction(x1y1);\n result = add(result, Fraction(x2y1)); // Add checks for overflow\n result = add(result, Fraction(x1y2)); // Add checks for overflow\n result = add(result, Fraction(x2y2)); // Add checks for overflow\n return result;\n }\n\n /**\n * @notice 1/x\n * @dev\n * Test reciprocal(0) fails\n * Test reciprocal(fixed1()) returns fixed1()\n * Test reciprocal(fixed1()*fixed1()) returns 1 // Testing how the fractional is truncated\n * Test reciprocal(1+fixed1()*fixed1()) returns 0 // Testing how the fractional is truncated\n * Test reciprocal(newFixedFraction(1, 1e24)) returns newFixed(1e24)\n */\n function reciprocal(Fraction memory x) internal pure returns (Fraction memory) {\n require(x.value != 0, \"can't call reciprocal(0)\");\n return Fraction((FIXED1_UINT * FIXED1_UINT) / x.value); // Can't overflow\n }\n\n /**\n * @notice x/y. If the dividend is higher than the max dividend value, it\n * might overflow. You can use multiply(x,reciprocal(y)) instead.\n * @dev The maximum value that can be safely used as a dividend (maxNewFixed) is defined as\n * divide(maxNewFixed,newFixedFraction(1,fixed1())) is around maxUint256().\n * This yields the value 115792089237316195423570985008687907853269984665640564.\n * Test maxNewFixed equals maxUint256()/fixed1()\n * Test divide(maxNewFixed,1) equals maxNewFixed*(fixed1)\n * Test divide(maxNewFixed+1,multiply(mulPrecision(),mulPrecision())) throws\n * Test divide(fixed1(),0) fails\n * Test divide(maxNewFixed,1) = maxNewFixed*(10^digits())\n * Test divide(maxNewFixed+1,1) throws\n */\n function divide(Fraction memory x, Fraction memory y) internal pure returns (Fraction memory) {\n require(y.value != 0, \"can't divide by 0\");\n // solhint-disable-next-line var-name-mixedcase\n uint256 X = x.value * FIXED1_UINT;\n require(X / FIXED1_UINT == x.value, \"overflow at divide\");\n return Fraction(X / y.value);\n }\n\n /**\n * @notice x > y\n */\n function gt(Fraction memory x, Fraction memory y) internal pure returns (bool) {\n return x.value > y.value;\n }\n\n /**\n * @notice x >= y\n */\n function gte(Fraction memory x, Fraction memory y) internal pure returns (bool) {\n return x.value >= y.value;\n }\n\n /**\n * @notice x < y\n */\n function lt(Fraction memory x, Fraction memory y) internal pure returns (bool) {\n return x.value < y.value;\n }\n\n /**\n * @notice x <= y\n */\n function lte(Fraction memory x, Fraction memory y) internal pure returns (bool) {\n return x.value <= y.value;\n }\n\n /**\n * @notice x == y\n */\n function equals(Fraction memory x, Fraction memory y) internal pure returns (bool) {\n return x.value == y.value;\n }\n\n /**\n * @notice x <= 1\n */\n function isProperFraction(Fraction memory x) internal pure returns (bool) {\n return lte(x, fixed1());\n }\n}\n"},{"file_path":"lib/mento-core-2.2.0/contracts/common/linkedlists/LinkedList.sol","source_code":"// SPDX-License-Identifier: GPL-3.0-or-later\npragma solidity ^0.5.13;\n\nimport \"openzeppelin-solidity/contracts/math/SafeMath.sol\";\n\n/**\n * @title Maintains a doubly linked list keyed by bytes32.\n * @dev Following the `next` pointers will lead you to the head, rather than the tail.\n */\nlibrary LinkedList {\n using SafeMath for uint256;\n\n struct Element {\n bytes32 previousKey;\n bytes32 nextKey;\n bool exists;\n }\n\n struct List {\n bytes32 head;\n bytes32 tail;\n uint256 numElements;\n mapping(bytes32 => Element) elements;\n }\n\n /**\n * @notice Inserts an element into a doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @param key The key of the element to insert.\n * @param previousKey The key of the element that comes before the element to insert.\n * @param nextKey The key of the element that comes after the element to insert.\n */\n function insert(\n List storage list,\n bytes32 key,\n bytes32 previousKey,\n bytes32 nextKey\n ) internal {\n require(key != bytes32(0), \"Key must be defined\");\n require(!contains(list, key), \"Can't insert an existing element\");\n require(previousKey != key && nextKey != key, \"Key cannot be the same as previousKey or nextKey\");\n\n Element storage element = list.elements[key];\n element.exists = true;\n\n if (list.numElements == 0) {\n list.tail = key;\n list.head = key;\n } else {\n require(previousKey != bytes32(0) || nextKey != bytes32(0), \"Either previousKey or nextKey must be defined\");\n\n element.previousKey = previousKey;\n element.nextKey = nextKey;\n\n if (previousKey != bytes32(0)) {\n require(contains(list, previousKey), \"If previousKey is defined, it must exist in the list\");\n Element storage previousElement = list.elements[previousKey];\n require(previousElement.nextKey == nextKey, \"previousKey must be adjacent to nextKey\");\n previousElement.nextKey = key;\n } else {\n list.tail = key;\n }\n\n if (nextKey != bytes32(0)) {\n require(contains(list, nextKey), \"If nextKey is defined, it must exist in the list\");\n Element storage nextElement = list.elements[nextKey];\n require(nextElement.previousKey == previousKey, \"previousKey must be adjacent to nextKey\");\n nextElement.previousKey = key;\n } else {\n list.head = key;\n }\n }\n\n list.numElements = list.numElements.add(1);\n }\n\n /**\n * @notice Inserts an element at the tail of the doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @param key The key of the element to insert.\n */\n function push(List storage list, bytes32 key) internal {\n insert(list, key, bytes32(0), list.tail);\n }\n\n /**\n * @notice Removes an element from the doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @param key The key of the element to remove.\n */\n function remove(List storage list, bytes32 key) internal {\n Element storage element = list.elements[key];\n require(key != bytes32(0) && contains(list, key), \"key not in list\");\n if (element.previousKey != bytes32(0)) {\n Element storage previousElement = list.elements[element.previousKey];\n previousElement.nextKey = element.nextKey;\n } else {\n list.tail = element.nextKey;\n }\n\n if (element.nextKey != bytes32(0)) {\n Element storage nextElement = list.elements[element.nextKey];\n nextElement.previousKey = element.previousKey;\n } else {\n list.head = element.previousKey;\n }\n\n delete list.elements[key];\n list.numElements = list.numElements.sub(1);\n }\n\n /**\n * @notice Updates an element in the list.\n * @param list A storage pointer to the underlying list.\n * @param key The element key.\n * @param previousKey The key of the element that comes before the updated element.\n * @param nextKey The key of the element that comes after the updated element.\n */\n function update(\n List storage list,\n bytes32 key,\n bytes32 previousKey,\n bytes32 nextKey\n ) internal {\n require(key != bytes32(0) && key != previousKey && key != nextKey && contains(list, key), \"key on in list\");\n remove(list, key);\n insert(list, key, previousKey, nextKey);\n }\n\n /**\n * @notice Returns whether or not a particular key is present in the sorted list.\n * @param list A storage pointer to the underlying list.\n * @param key The element key.\n * @return Whether or not the key is in the sorted list.\n */\n function contains(List storage list, bytes32 key) internal view returns (bool) {\n return list.elements[key].exists;\n }\n\n /**\n * @notice Returns the keys of the N elements at the head of the list.\n * @param list A storage pointer to the underlying list.\n * @param n The number of elements to return.\n * @return The keys of the N elements at the head of the list.\n * @dev Reverts if n is greater than the number of elements in the list.\n */\n function headN(List storage list, uint256 n) internal view returns (bytes32[] memory) {\n require(n <= list.numElements, \"not enough elements\");\n bytes32[] memory keys = new bytes32[](n);\n bytes32 key = list.head;\n for (uint256 i = 0; i < n; i = i.add(1)) {\n keys[i] = key;\n key = list.elements[key].previousKey;\n }\n return keys;\n }\n\n /**\n * @notice Gets all element keys from the doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @return All element keys from head to tail.\n */\n function getKeys(List storage list) internal view returns (bytes32[] memory) {\n return headN(list, list.numElements);\n }\n}\n"},{"file_path":"lib/mento-core-2.2.0/contracts/common/linkedlists/SortedLinkedList.sol","source_code":"// SPDX-License-Identifier: GPL-3.0-or-later\npragma solidity ^0.5.13;\n\nimport \"openzeppelin-solidity/contracts/math/SafeMath.sol\";\nimport \"./LinkedList.sol\";\n\n/**\n * @title Maintains a sorted list of unsigned ints keyed by bytes32.\n */\nlibrary SortedLinkedList {\n using SafeMath for uint256;\n using LinkedList for LinkedList.List;\n\n struct List {\n LinkedList.List list;\n mapping(bytes32 => uint256) values;\n }\n\n /**\n * @notice Inserts an element into a doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @param key The key of the element to insert.\n * @param value The element value.\n * @param lesserKey The key of the element less than the element to insert.\n * @param greaterKey The key of the element greater than the element to insert.\n */\n function insert(\n List storage list,\n bytes32 key,\n uint256 value,\n bytes32 lesserKey,\n bytes32 greaterKey\n ) internal {\n require(key != bytes32(0) && key != lesserKey && key != greaterKey && !contains(list, key), \"invalid key\");\n require(\n (lesserKey != bytes32(0) || greaterKey != bytes32(0)) || list.list.numElements == 0,\n \"greater and lesser key zero\"\n );\n require(contains(list, lesserKey) || lesserKey == bytes32(0), \"invalid lesser key\");\n require(contains(list, greaterKey) || greaterKey == bytes32(0), \"invalid greater key\");\n (lesserKey, greaterKey) = getLesserAndGreater(list, value, lesserKey, greaterKey);\n list.list.insert(key, lesserKey, greaterKey);\n list.values[key] = value;\n }\n\n /**\n * @notice Removes an element from the doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @param key The key of the element to remove.\n */\n function remove(List storage list, bytes32 key) internal {\n list.list.remove(key);\n list.values[key] = 0;\n }\n\n /**\n * @notice Updates an element in the list.\n * @param list A storage pointer to the underlying list.\n * @param key The element key.\n * @param value The element value.\n * @param lesserKey The key of the element will be just left of `key` after the update.\n * @param greaterKey The key of the element will be just right of `key` after the update.\n * @dev Note that only one of \"lesserKey\" or \"greaterKey\" needs to be correct to reduce friction.\n */\n function update(\n List storage list,\n bytes32 key,\n uint256 value,\n bytes32 lesserKey,\n bytes32 greaterKey\n ) internal {\n remove(list, key);\n insert(list, key, value, lesserKey, greaterKey);\n }\n\n /**\n * @notice Inserts an element at the tail of the doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @param key The key of the element to insert.\n */\n function push(List storage list, bytes32 key) internal {\n insert(list, key, 0, bytes32(0), list.list.tail);\n }\n\n /**\n * @notice Removes N elements from the head of the list and returns their keys.\n * @param list A storage pointer to the underlying list.\n * @param n The number of elements to pop.\n * @return The keys of the popped elements.\n */\n function popN(List storage list, uint256 n) internal returns (bytes32[] memory) {\n require(n <= list.list.numElements, \"not enough elements\");\n bytes32[] memory keys = new bytes32[](n);\n for (uint256 i = 0; i < n; i = i.add(1)) {\n bytes32 key = list.list.head;\n keys[i] = key;\n remove(list, key);\n }\n return keys;\n }\n\n /**\n * @notice Returns whether or not a particular key is present in the sorted list.\n * @param list A storage pointer to the underlying list.\n * @param key The element key.\n * @return Whether or not the key is in the sorted list.\n */\n function contains(List storage list, bytes32 key) internal view returns (bool) {\n return list.list.contains(key);\n }\n\n /**\n * @notice Returns the value for a particular key in the sorted list.\n * @param list A storage pointer to the underlying list.\n * @param key The element key.\n * @return The element value.\n */\n function getValue(List storage list, bytes32 key) internal view returns (uint256) {\n return list.values[key];\n }\n\n /**\n * @notice Gets all elements from the doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @return Array of all keys in the list.\n * @return Values corresponding to keys, which will be ordered largest to smallest.\n */\n function getElements(List storage list) internal view returns (bytes32[] memory, uint256[] memory) {\n bytes32[] memory keys = getKeys(list);\n uint256[] memory values = new uint256[](keys.length);\n for (uint256 i = 0; i < keys.length; i = i.add(1)) {\n values[i] = list.values[keys[i]];\n }\n return (keys, values);\n }\n\n /**\n * @notice Gets all element keys from the doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @return All element keys from head to tail.\n */\n function getKeys(List storage list) internal view returns (bytes32[] memory) {\n return list.list.getKeys();\n }\n\n /**\n * @notice Returns first N greatest elements of the list.\n * @param list A storage pointer to the underlying list.\n * @param n The number of elements to return.\n * @return The keys of the first n elements.\n * @dev Reverts if n is greater than the number of elements in the list.\n */\n function headN(List storage list, uint256 n) internal view returns (bytes32[] memory) {\n return list.list.headN(n);\n }\n\n /**\n * @notice Returns the keys of the elements greaterKey than and less than the provided value.\n * @param list A storage pointer to the underlying list.\n * @param value The element value.\n * @param lesserKey The key of the element which could be just left of the new value.\n * @param greaterKey The key of the element which could be just right of the new value.\n * @return The correct lesserKey keys.\n * @return The correct greaterKey keys.\n */\n function getLesserAndGreater(\n List storage list,\n uint256 value,\n bytes32 lesserKey,\n bytes32 greaterKey\n ) private view returns (bytes32, bytes32) {\n // Check for one of the following conditions and fail if none are met:\n // 1. The value is less than the current lowest value\n // 2. The value is greater than the current greatest value\n // 3. The value is just greater than the value for `lesserKey`\n // 4. The value is just less than the value for `greaterKey`\n if (lesserKey == bytes32(0) && isValueBetween(list, value, lesserKey, list.list.tail)) {\n return (lesserKey, list.list.tail);\n } else if (greaterKey == bytes32(0) && isValueBetween(list, value, list.list.head, greaterKey)) {\n return (list.list.head, greaterKey);\n } else if (\n lesserKey != bytes32(0) && isValueBetween(list, value, lesserKey, list.list.elements[lesserKey].nextKey)\n ) {\n return (lesserKey, list.list.elements[lesserKey].nextKey);\n } else if (\n greaterKey != bytes32(0) && isValueBetween(list, value, list.list.elements[greaterKey].previousKey, greaterKey)\n ) {\n return (list.list.elements[greaterKey].previousKey, greaterKey);\n } else {\n require(false, \"get lesser and greater failure\");\n }\n }\n\n /**\n * @notice Returns whether or not a given element is between two other elements.\n * @param list A storage pointer to the underlying list.\n * @param value The element value.\n * @param lesserKey The key of the element whose value should be lesserKey.\n * @param greaterKey The key of the element whose value should be greaterKey.\n * @return True if the given element is between the two other elements.\n */\n function isValueBetween(\n List storage list,\n uint256 value,\n bytes32 lesserKey,\n bytes32 greaterKey\n ) private view returns (bool) {\n bool isLesser = lesserKey == bytes32(0) || list.values[lesserKey] <= value;\n bool isGreater = greaterKey == bytes32(0) || list.values[greaterKey] >= value;\n return isLesser && isGreater;\n }\n}\n"},{"file_path":"lib/mento-core-2.2.0/contracts/common/linkedlists/SortedLinkedListWithMedian.sol","source_code":"// SPDX-License-Identifier: GPL-3.0-or-later\npragma solidity ^0.5.13;\n\nimport \"openzeppelin-solidity/contracts/math/SafeMath.sol\";\nimport \"./LinkedList.sol\";\nimport \"./SortedLinkedList.sol\";\n\n/**\n * @title Maintains a sorted list of unsigned ints keyed by bytes32.\n */\nlibrary SortedLinkedListWithMedian {\n using SafeMath for uint256;\n using SortedLinkedList for SortedLinkedList.List;\n\n enum MedianAction {\n None,\n Lesser,\n Greater\n }\n\n enum MedianRelation {\n Undefined,\n Lesser,\n Greater,\n Equal\n }\n\n struct List {\n SortedLinkedList.List list;\n bytes32 median;\n mapping(bytes32 => MedianRelation) relation;\n }\n\n /**\n * @notice Inserts an element into a doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @param key The key of the element to insert.\n * @param value The element value.\n * @param lesserKey The key of the element less than the element to insert.\n * @param greaterKey The key of the element greater than the element to insert.\n */\n function insert(\n List storage list,\n bytes32 key,\n uint256 value,\n bytes32 lesserKey,\n bytes32 greaterKey\n ) internal {\n list.list.insert(key, value, lesserKey, greaterKey);\n LinkedList.Element storage element = list.list.list.elements[key];\n\n MedianAction action = MedianAction.None;\n if (list.list.list.numElements == 1) {\n list.median = key;\n list.relation[key] = MedianRelation.Equal;\n } else if (list.list.list.numElements % 2 == 1) {\n // When we have an odd number of elements, and the element that we inserted is less than\n // the previous median, we need to slide the median down one element, since we had previously\n // selected the greater of the two middle elements.\n if (element.previousKey == bytes32(0) || list.relation[element.previousKey] == MedianRelation.Lesser) {\n action = MedianAction.Lesser;\n list.relation[key] = MedianRelation.Lesser;\n } else {\n list.relation[key] = MedianRelation.Greater;\n }\n } else {\n // When we have an even number of elements, and the element that we inserted is greater than\n // the previous median, we need to slide the median up one element, since we always select\n // the greater of the two middle elements.\n if (element.nextKey == bytes32(0) || list.relation[element.nextKey] == MedianRelation.Greater) {\n action = MedianAction.Greater;\n list.relation[key] = MedianRelation.Greater;\n } else {\n list.relation[key] = MedianRelation.Lesser;\n }\n }\n updateMedian(list, action);\n }\n\n /**\n * @notice Removes an element from the doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @param key The key of the element to remove.\n */\n function remove(List storage list, bytes32 key) internal {\n MedianAction action = MedianAction.None;\n if (list.list.list.numElements == 0) {\n list.median = bytes32(0);\n } else if (list.list.list.numElements % 2 == 0) {\n // When we have an even number of elements, we always choose the higher of the two medians.\n // Thus, if the element we're removing is greaterKey than or equal to the median we need to\n // slide the median left by one.\n if (list.relation[key] == MedianRelation.Greater || list.relation[key] == MedianRelation.Equal) {\n action = MedianAction.Lesser;\n }\n } else {\n // When we don't have an even number of elements, we just choose the median value.\n // Thus, if the element we're removing is less than or equal to the median, we need to slide\n // median right by one.\n if (list.relation[key] == MedianRelation.Lesser || list.relation[key] == MedianRelation.Equal) {\n action = MedianAction.Greater;\n }\n }\n updateMedian(list, action);\n\n list.list.remove(key);\n }\n\n /**\n * @notice Updates an element in the list.\n * @param list A storage pointer to the underlying list.\n * @param key The element key.\n * @param value The element value.\n * @param lesserKey The key of the element will be just left of `key` after the update.\n * @param greaterKey The key of the element will be just right of `key` after the update.\n * @dev Note that only one of \"lesserKey\" or \"greaterKey\" needs to be correct to reduce friction.\n */\n function update(\n List storage list,\n bytes32 key,\n uint256 value,\n bytes32 lesserKey,\n bytes32 greaterKey\n ) internal {\n remove(list, key);\n insert(list, key, value, lesserKey, greaterKey);\n }\n\n /**\n * @notice Inserts an element at the tail of the doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @param key The key of the element to insert.\n */\n function push(List storage list, bytes32 key) internal {\n insert(list, key, 0, bytes32(0), list.list.list.tail);\n }\n\n /**\n * @notice Removes N elements from the head of the list and returns their keys.\n * @param list A storage pointer to the underlying list.\n * @param n The number of elements to pop.\n * @return The keys of the popped elements.\n */\n function popN(List storage list, uint256 n) internal returns (bytes32[] memory) {\n require(n <= list.list.list.numElements, \"not enough elements\");\n bytes32[] memory keys = new bytes32[](n);\n for (uint256 i = 0; i < n; i = i.add(1)) {\n bytes32 key = list.list.list.head;\n keys[i] = key;\n remove(list, key);\n }\n return keys;\n }\n\n /**\n * @notice Returns whether or not a particular key is present in the sorted list.\n * @param list A storage pointer to the underlying list.\n * @param key The element key.\n * @return Whether or not the key is in the sorted list.\n */\n function contains(List storage list, bytes32 key) internal view returns (bool) {\n return list.list.contains(key);\n }\n\n /**\n * @notice Returns the value for a particular key in the sorted list.\n * @param list A storage pointer to the underlying list.\n * @param key The element key.\n * @return The element value.\n */\n function getValue(List storage list, bytes32 key) internal view returns (uint256) {\n return list.list.values[key];\n }\n\n /**\n * @notice Returns the median value of the sorted list.\n * @param list A storage pointer to the underlying list.\n * @return The median value.\n */\n function getMedianValue(List storage list) internal view returns (uint256) {\n return getValue(list, list.median);\n }\n\n /**\n * @notice Returns the key of the first element in the list.\n * @param list A storage pointer to the underlying list.\n * @return The key of the first element in the list.\n */\n function getHead(List storage list) internal view returns (bytes32) {\n return list.list.list.head;\n }\n\n /**\n * @notice Returns the key of the median element in the list.\n * @param list A storage pointer to the underlying list.\n * @return The key of the median element in the list.\n */\n function getMedian(List storage list) internal view returns (bytes32) {\n return list.median;\n }\n\n /**\n * @notice Returns the key of the last element in the list.\n * @param list A storage pointer to the underlying list.\n * @return The key of the last element in the list.\n */\n function getTail(List storage list) internal view returns (bytes32) {\n return list.list.list.tail;\n }\n\n /**\n * @notice Returns the number of elements in the list.\n * @param list A storage pointer to the underlying list.\n * @return The number of elements in the list.\n */\n function getNumElements(List storage list) internal view returns (uint256) {\n return list.list.list.numElements;\n }\n\n /**\n * @notice Gets all elements from the doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @return Array of all keys in the list.\n * @return Values corresponding to keys, which will be ordered largest to smallest.\n * @return Array of relations to median of corresponding list elements.\n */\n function getElements(List storage list)\n internal\n view\n returns (\n bytes32[] memory,\n uint256[] memory,\n MedianRelation[] memory\n )\n {\n bytes32[] memory keys = getKeys(list);\n uint256[] memory values = new uint256[](keys.length);\n MedianRelation[] memory relations = new MedianRelation[](keys.length);\n for (uint256 i = 0; i < keys.length; i = i.add(1)) {\n values[i] = list.list.values[keys[i]];\n relations[i] = list.relation[keys[i]];\n }\n return (keys, values, relations);\n }\n\n /**\n * @notice Gets all element keys from the doubly linked list.\n * @param list A storage pointer to the underlying list.\n * @return All element keys from head to tail.\n */\n function getKeys(List storage list) internal view returns (bytes32[] memory) {\n return list.list.getKeys();\n }\n\n /**\n * @notice Moves the median pointer right or left of its current value.\n * @param list A storage pointer to the underlying list.\n * @param action Which direction to move the median pointer.\n */\n function updateMedian(List storage list, MedianAction action) private {\n LinkedList.Element storage previousMedian = list.list.list.elements[list.median];\n if (action == MedianAction.Lesser) {\n list.relation[list.median] = MedianRelation.Greater;\n list.median = previousMedian.previousKey;\n } else if (action == MedianAction.Greater) {\n list.relation[list.median] = MedianRelation.Lesser;\n list.median = previousMedian.nextKey;\n }\n list.relation[list.median] = MedianRelation.Equal;\n }\n}\n"},{"file_path":"lib/mento-core-2.2.0/contracts/interfaces/IBreaker.sol","source_code":"// SPDX-License-Identifier: GPL-3.0-or-later\npragma solidity ^0.5.13;\n\n/**\n * @title Breaker Interface\n * @notice Defines the basic interface for a Breaker\n */\ninterface IBreaker {\n /**\n * @notice Emitted when the sortedOracles address is updated.\n * @param newSortedOracles The address of the new sortedOracles.\n */\n event SortedOraclesUpdated(address newSortedOracles);\n\n /**\n * @notice Retrieve the cooldown time for the breaker.\n * @param rateFeedID The rate feed to get the cooldown for\n * @return cooldown The amount of time that must pass before the breaker can reset.\n * @dev when cooldown is 0 auto reset will not be attempted.\n */\n function getCooldown(address rateFeedID) external view returns (uint256 cooldown);\n\n /**\n * @notice Check if the criteria have been met, by a specified rateFeedID, to trigger the breaker.\n * @param rateFeedID The address of the rate feed to run the check against.\n * @return triggerBreaker A boolean indicating whether or not the breaker\n * should be triggered for the given rate feed.\n */\n function shouldTrigger(address rateFeedID) external returns (bool triggerBreaker);\n\n /**\n * @notice Check if the criteria to automatically reset the breaker have been met.\n * @param rateFeedID The address of rate feed the criteria should be checked against.\n * @return resetBreaker A boolean indicating whether the breaker\n * should be reset for the given rate feed.\n * @dev Allows the definition of additional critera to check before reset.\n * If no additional criteria is needed set to !shouldTrigger();\n */\n function shouldReset(address rateFeedID) external returns (bool resetBreaker);\n}\n"},{"file_path":"lib/mento-core-2.2.0/contracts/interfaces/ISortedOracles.sol","source_code":"// SPDX-License-Identifier: GPL-3.0-or-later\npragma solidity ^0.5.13;\n\nimport \"../common/linkedlists/SortedLinkedListWithMedian.sol\";\n\ninterface ISortedOracles {\n function addOracle(address, address) external;\n\n function removeOracle(\n address,\n address,\n uint256\n ) external;\n\n function report(\n address,\n uint256,\n address,\n address\n ) external;\n\n function removeExpiredReports(address, uint256) external;\n\n function isOldestReportExpired(address token) external view returns (bool, address);\n\n function numRates(address) external view returns (uint256);\n\n function medianRate(address) external view returns (uint256, uint256);\n\n function numTimestamps(address) external view returns (uint256);\n\n function medianTimestamp(address) external view returns (uint256);\n\n function getOracles(address) external view returns (address[] memory);\n\n function getTimestamps(address token)\n external\n view\n returns (\n address[] memory,\n uint256[] memory,\n SortedLinkedListWithMedian.MedianRelation[] memory\n );\n}\n"},{"file_path":"lib/mento-core-2.2.0/contracts/oracles/breakers/WithCooldown.sol","source_code":"// SPDX-License-Identifier: GPL-3.0-or-later\npragma solidity ^0.5.13;\n\n/**\n * @title Breaker With Cooldown\n * @notice Utility portion of a Breaker contract which deals with the\n * cooldown component.\n */\ncontract WithCooldown {\n /* ==================== Events ==================== */\n /**\n * @notice Emitted after the cooldownTime has been updated.\n * @param newCooldownTime The new cooldownTime of the breaker.\n */\n event DefaultCooldownTimeUpdated(uint256 newCooldownTime);\n\n /**\n * @notice Emitted after the cooldownTime has been updated.\n * @param rateFeedID The rateFeedID targeted.\n * @param newCooldownTime The new cooldownTime of the breaker.\n */\n event RateFeedCooldownTimeUpdated(address rateFeedID, uint256 newCooldownTime);\n\n /* ==================== State Variables ==================== */\n\n // The amount of time that must pass before the breaker can be reset for a rate feed.\n // Should be set to 0 to force a manual reset.\n uint256 public defaultCooldownTime;\n mapping(address => uint256) public rateFeedCooldownTime;\n\n /* ==================== View Functions ==================== */\n\n /**\n * @notice Get the cooldown time for a rateFeedID\n * @param rateFeedID the targeted rate feed.\n * @return the rate specific or default cooldown\n */\n function getCooldown(address rateFeedID) public view returns (uint256) {\n uint256 _rateFeedCooldownTime = rateFeedCooldownTime[rateFeedID];\n if (_rateFeedCooldownTime == 0) {\n return defaultCooldownTime;\n }\n return _rateFeedCooldownTime;\n }\n\n /* ==================== Internal Functions ==================== */\n\n /**\n * @notice Sets the cooldown time to the specified value for a rate feed.\n * @param rateFeedIDs the targeted rate feed.\n * @param cooldownTimes The new cooldownTime value.\n * @dev Should be set to 0 to force a manual reset.\n */\n function _setCooldownTimes(address[] memory rateFeedIDs, uint256[] memory cooldownTimes) internal {\n require(rateFeedIDs.length == cooldownTimes.length, \"array length missmatch\");\n for (uint256 i = 0; i < rateFeedIDs.length; i++) {\n require(rateFeedIDs[i] != address(0), \"rate feed invalid\");\n rateFeedCooldownTime[rateFeedIDs[i]] = cooldownTimes[i];\n emit RateFeedCooldownTimeUpdated(rateFeedIDs[i], cooldownTimes[i]);\n }\n }\n\n /**\n * @notice Sets the cooldownTime to the specified value for a rate feed.\n * @param cooldownTime The new cooldownTime value.\n * @dev Should be set to 0 to force a manual reset.\n */\n function _setDefaultCooldownTime(uint256 cooldownTime) internal {\n defaultCooldownTime = cooldownTime;\n emit DefaultCooldownTimeUpdated(cooldownTime);\n }\n}\n"},{"file_path":"lib/mento-core-2.2.0/contracts/oracles/breakers/WithThreshold.sol","source_code":"// SPDX-License-Identifier: GPL-3.0-or-later\npragma solidity ^0.5.13;\n\nimport { SafeMath } from \"openzeppelin-solidity/contracts/math/SafeMath.sol\";\nimport { FixidityLib } from \"../../common/FixidityLib.sol\";\n\n/**\n * @title Breaker With Thershold\n * @notice Utility portion of a Breaker contract which deals with\n * managing a threshold percentage and checking two values\n * . against it.\n */\ncontract WithThreshold {\n using FixidityLib for FixidityLib.Fraction;\n using SafeMath for uint256;\n\n /* ==================== Events ==================== */\n\n // Emitted when the default rate threshold is updated.\n event DefaultRateChangeThresholdUpdated(uint256 defaultRateChangeThreshold);\n\n // Emitted when the rate threshold is updated.\n event RateChangeThresholdUpdated(address rateFeedID, uint256 rateChangeThreshold);\n\n /* ==================== State Variables ==================== */\n\n // The default allowed threshold for the median rate change as a Fixidity fraction.\n FixidityLib.Fraction public defaultRateChangeThreshold;\n\n // Maps rate feed to a threshold.\n mapping(address => FixidityLib.Fraction) public rateChangeThreshold;\n\n /* ==================== View Functions ==================== */\n\n /**\n * @notice Checks if a value is in a certain theshold of a given reference value.\n * @dev The reference value can be the previous median (MedianDeltaBreaker) or\n * a static value (ValueDeltaBreaker), while the currentValue is usually\n * the median after the most recent report.\n * @param referenceValue The reference value to check against.\n * @param currentValue The current value which is checked against the reference.\n * @param rateFeedID The specific rate ID to check threshold for.\n * @return Returns a bool indicating whether or not the current rate\n * is within the allowed threshold.\n */\n function exceedsThreshold(\n uint256 referenceValue,\n uint256 currentValue,\n address rateFeedID\n ) public view returns (bool) {\n uint256 allowedThreshold = defaultRateChangeThreshold.unwrap();\n uint256 rateSpecificThreshold = rateChangeThreshold[rateFeedID].unwrap();\n // checks if a given rate feed id has a threshold set and reassignes it\n if (rateSpecificThreshold != 0) allowedThreshold = rateSpecificThreshold;\n\n uint256 fixed1 = FixidityLib.fixed1().unwrap();\n\n uint256 maxPercent = uint256(fixed1).add(allowedThreshold);\n uint256 maxValue = (referenceValue.mul(maxPercent)).div(10**24);\n\n uint256 minPercent = uint256(fixed1).sub(allowedThreshold);\n uint256 minValue = (referenceValue.mul(minPercent)).div(10**24);\n\n return (currentValue < minValue || currentValue > maxValue);\n }\n\n /* ==================== Internal Functions ==================== */\n\n /**\n * @notice Sets rateChangeThreshold.\n * @param _defaultRateChangeThreshold The new rateChangeThreshold value.\n */\n function _setDefaultRateChangeThreshold(uint256 _defaultRateChangeThreshold) internal {\n defaultRateChangeThreshold = FixidityLib.wrap(_defaultRateChangeThreshold);\n require(defaultRateChangeThreshold.lt(FixidityLib.fixed1()), \"value must be less than 1\");\n emit DefaultRateChangeThresholdUpdated(_defaultRateChangeThreshold);\n }\n\n /**\n * @notice Configures rate feed to rate threshold pairs.\n * @param rateFeedIDs Collection of the addresses rate feeds.\n * @param rateChangeThresholds Collection of the rate thresholds.\n */\n function _setRateChangeThresholds(address[] memory rateFeedIDs, uint256[] memory rateChangeThresholds) internal {\n require(rateFeedIDs.length == rateChangeThresholds.length, \"array length missmatch\");\n for (uint256 i = 0; i < rateFeedIDs.length; i++) {\n require(rateFeedIDs[i] != address(0), \"rate feed invalid\");\n FixidityLib.Fraction memory _rateChangeThreshold = FixidityLib.wrap(rateChangeThresholds[i]);\n require(_rateChangeThreshold.lt(FixidityLib.fixed1()), \"value must be less than 1\");\n rateChangeThreshold[rateFeedIDs[i]] = _rateChangeThreshold;\n emit RateChangeThresholdUpdated(rateFeedIDs[i], rateChangeThresholds[i]);\n }\n }\n}\n"}],"certified":false,"conflicting_implementations":null,"abi":[{"inputs":[{"internalType":"uint256","name":"_defaultCooldownTime","type":"uint256"},{"internalType":"uint256","name":"_defaultRateChangeThreshold","type":"uint256"},{"internalType":"contract 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