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{
"language": "Solidity",
"settings": {
"evmVersion": "london",
"libraries": {},
"metadata": {
"bytecodeHash": "ipfs",
"useLiteralContent": true
},
"optimizer": {
"enabled": true,
"runs": 5000
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"remappings": [],
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
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}
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},
"sources": {
"@openzeppelin/contracts/token/ERC20/IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `to`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address to, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `from` to `to` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n using Address for address;\n\n function safeTransfer(\n IERC20 token,\n address to,\n uint256 value\n ) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n }\n\n function safeTransferFrom(\n IERC20 token,\n address from,\n address to,\n uint256 value\n ) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n }\n\n /**\n * @dev Deprecated. This function has issues similar to the ones found in\n * {IERC20-approve}, and its usage is discouraged.\n *\n * Whenever possible, use {safeIncreaseAllowance} and\n * {safeDecreaseAllowance} instead.\n */\n function safeApprove(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n // safeApprove should only be called when setting an initial allowance,\n // or when resetting it to zero. To increase and decrease it, use\n // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n require(\n (value == 0) || (token.allowance(address(this), spender) == 0),\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n );\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n }\n\n function safeIncreaseAllowance(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n uint256 newAllowance = token.allowance(address(this), spender) + value;\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n\n function safeDecreaseAllowance(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n unchecked {\n uint256 oldAllowance = token.allowance(address(this), spender);\n require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n uint256 newAllowance = oldAllowance - value;\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n */\n function _callOptionalReturn(IERC20 token, bytes memory data) private {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n // the target address contains contract code and also asserts for success in the low-level call.\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n if (returndata.length > 0) {\n // Return data is optional\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n }\n }\n}\n"
},
"@openzeppelin/contracts/utils/Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n *\n * [IMPORTANT]\n * ====\n * You shouldn't rely on `isContract` to protect against flash loan attacks!\n *\n * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n * constructor.\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize/address.code.length, which returns 0\n // for contracts in construction, since the code is only stored at the end\n // of the constructor execution.\n\n return account.code.length > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain `call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason using the provided one.\n *\n * _Available since v4.3._\n */\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n"
},
"@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol": {
"content": "pragma solidity >=0.5.0;\n\ninterface IUniswapV2Factory {\n event PairCreated(address indexed token0, address indexed token1, address pair, uint);\n\n function feeTo() external view returns (address);\n function feeToSetter() external view returns (address);\n\n function getPair(address tokenA, address tokenB) external view returns (address pair);\n function allPairs(uint) external view returns (address pair);\n function allPairsLength() external view returns (uint);\n\n function createPair(address tokenA, address tokenB) external returns (address pair);\n\n function setFeeTo(address) external;\n function setFeeToSetter(address) external;\n}\n"
},
"@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol": {
"content": "pragma solidity >=0.5.0;\n\ninterface IUniswapV2Pair {\n event Approval(address indexed owner, address indexed spender, uint value);\n event Transfer(address indexed from, address indexed to, uint value);\n\n function name() external pure returns (string memory);\n function symbol() external pure returns (string memory);\n function decimals() external pure returns (uint8);\n function totalSupply() external view returns (uint);\n function balanceOf(address owner) external view returns (uint);\n function allowance(address owner, address spender) external view returns (uint);\n\n function approve(address spender, uint value) external returns (bool);\n function transfer(address to, uint value) external returns (bool);\n function transferFrom(address from, address to, uint value) external returns (bool);\n\n function DOMAIN_SEPARATOR() external view returns (bytes32);\n function PERMIT_TYPEHASH() external pure returns (bytes32);\n function nonces(address owner) external view returns (uint);\n\n function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;\n\n event Mint(address indexed sender, uint amount0, uint amount1);\n event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);\n event Swap(\n address indexed sender,\n uint amount0In,\n uint amount1In,\n uint amount0Out,\n uint amount1Out,\n address indexed to\n );\n event Sync(uint112 reserve0, uint112 reserve1);\n\n function MINIMUM_LIQUIDITY() external pure returns (uint);\n function factory() external view returns (address);\n function token0() external view returns (address);\n function token1() external view returns (address);\n function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);\n function price0CumulativeLast() external view returns (uint);\n function price1CumulativeLast() external view returns (uint);\n function kLast() external view returns (uint);\n\n function mint(address to) external returns (uint liquidity);\n function burn(address to) external returns (uint amount0, uint amount1);\n function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;\n function skim(address to) external;\n function sync() external;\n\n function initialize(address, address) external;\n}\n"
},
"@uniswap/v3-core/contracts/libraries/LowGasSafeMath.sol": {
"content": "// SPDX-License-Identifier: GPL-2.0-or-later\npragma solidity >=0.7.0;\n\n/// @title Optimized overflow and underflow safe math operations\n/// @notice Contains methods for doing math operations that revert on overflow or underflow for minimal gas cost\nlibrary LowGasSafeMath {\n /// @notice Returns x + y, reverts if sum overflows uint256\n /// @param x The augend\n /// @param y The addend\n /// @return z The sum of x and y\n function add(uint256 x, uint256 y) internal pure returns (uint256 z) {\n require((z = x + y) >= x);\n }\n\n /// @notice Returns x - y, reverts if underflows\n /// @param x The minuend\n /// @param y The subtrahend\n /// @return z The difference of x and y\n function sub(uint256 x, uint256 y) internal pure returns (uint256 z) {\n require((z = x - y) <= x);\n }\n\n /// @notice Returns x * y, reverts if overflows\n /// @param x The multiplicand\n /// @param y The multiplier\n /// @return z The product of x and y\n function mul(uint256 x, uint256 y) internal pure returns (uint256 z) {\n require(x == 0 || (z = x * y) / x == y);\n }\n\n /// @notice Returns x + y, reverts if overflows or underflows\n /// @param x The augend\n /// @param y The addend\n /// @return z The sum of x and y\n function add(int256 x, int256 y) internal pure returns (int256 z) {\n require((z = x + y) >= x == (y >= 0));\n }\n\n /// @notice Returns x - y, reverts if overflows or underflows\n /// @param x The minuend\n /// @param y The subtrahend\n /// @return z The difference of x and y\n function sub(int256 x, int256 y) internal pure returns (int256 z) {\n require((z = x - y) <= x == (y >= 0));\n }\n}\n"
},
"contracts/access/Governable.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"../interfaces/core/IAddressProvider.sol\";\n\n/**\n * @notice Contract module which provides access control mechanism, where\n * the governor account is granted with exclusive access to specific functions.\n * @dev Uses the AddressProvider to get the governor\n */\nabstract contract Governable {\n IAddressProvider public constant addressProvider = IAddressProvider(0xfbA0816A81bcAbBf3829bED28618177a2bf0e82A);\n\n /// @dev Throws if called by any account other than the governor.\n modifier onlyGovernor() {\n require(msg.sender == addressProvider.governor(), \"not-governor\");\n _;\n }\n}\n"
},
"contracts/dependencies/uniswap/libraries/UniswapV2Library.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity >=0.5.0;\n\nimport '@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol';\nimport '@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol';\nimport '@uniswap/v3-core/contracts/libraries/LowGasSafeMath.sol';\n\n/**\n * This is copied from Uniswap's V2SwapRouter.sol deployed at 0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45\n * and licensed under GPL-2.0-or-later.\n * Changelog:\n * - Removed hardcoded initCodeHash and taking as param so that we can support multiple UniswapV2Like exchanges\n * - Added function getAmountsOut()\n */\nlibrary UniswapV2Library {\n using LowGasSafeMath for uint256;\n\n // returns sorted token addresses, used to handle return values from pairs sorted in this order\n function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {\n require(tokenA != tokenB);\n (token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);\n require(token0 != address(0));\n }\n\n // calculates the CREATE2 address for a pair without making any external calls\n function pairFor(address factory, bytes32 initCodeHash, address tokenA, address tokenB) internal pure returns (address pair) {\n (address token0, address token1) = sortTokens(tokenA, tokenB);\n pair = address(uint160\n (uint256(keccak256(abi.encodePacked(\n hex'ff',\n factory,\n keccak256(abi.encodePacked(token0, token1)),\n initCodeHash\n )))));\n }\n\n // fetches and sorts the reserves for a pair\n function getReserves(\n address factory,\n bytes32 initCodeHash,\n address tokenA,\n address tokenB\n ) internal view returns (uint256 reserveA, uint256 reserveB) {\n (address token0, ) = sortTokens(tokenA, tokenB);\n (uint256 reserve0, uint256 reserve1, ) = IUniswapV2Pair(pairFor(factory, initCodeHash, tokenA, tokenB)).getReserves();\n (reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);\n }\n\n // given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset\n function getAmountOut(\n uint256 amountIn,\n uint256 reserveIn,\n uint256 reserveOut\n ) internal pure returns (uint256 amountOut) {\n require(amountIn > 0, 'INSUFFICIENT_INPUT_AMOUNT');\n require(reserveIn > 0 && reserveOut > 0);\n uint256 amountInWithFee = amountIn.mul(997);\n uint256 numerator = amountInWithFee.mul(reserveOut);\n uint256 denominator = reserveIn.mul(1000).add(amountInWithFee);\n amountOut = numerator / denominator;\n }\n\n // given an output amount of an asset and pair reserves, returns a required input amount of the other asset\n function getAmountIn(\n uint256 amountOut,\n uint256 reserveIn,\n uint256 reserveOut\n ) internal pure returns (uint256 amountIn) {\n require(amountOut > 0, 'INSUFFICIENT_OUTPUT_AMOUNT');\n require(reserveIn > 0 && reserveOut > 0);\n uint256 numerator = reserveIn.mul(amountOut).mul(1000);\n uint256 denominator = reserveOut.sub(amountOut).mul(997);\n amountIn = (numerator / denominator).add(1);\n }\n\n // performs chained getAmountOut calculations on any number of pairs\n function getAmountsOut(\n address factory,\n bytes32 initCodeHash,\n uint amountIn,\n address[] memory path\n ) internal view returns (uint[] memory amounts) {\n require(path.length >= 2);\n amounts = new uint[](path.length);\n amounts[0] = amountIn;\n for (uint i; i < path.length - 1; i++) {\n (uint reserveIn, uint reserveOut) = getReserves(factory, initCodeHash, path[i], path[i + 1]);\n amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);\n }\n }\n\n // performs chained getAmountIn calculations on any number of pairs\n function getAmountsIn(\n address factory,\n bytes32 initCodeHash,\n uint256 amountOut,\n address[] memory path\n ) internal view returns (uint256[] memory amounts) {\n require(path.length >= 2);\n amounts = new uint256[](path.length);\n amounts[amounts.length - 1] = amountOut;\n for (uint256 i = path.length - 1; i > 0; i--) {\n (uint256 reserveIn, uint256 reserveOut) = getReserves(factory,initCodeHash, path[i - 1], path[i]);\n amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);\n }\n }\n}\n"
},
"contracts/interfaces/core/IAddressProvider.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"./IStableCoinProvider.sol\";\nimport \"./IPriceProvidersAggregator.sol\";\n\ninterface IAddressProvider {\n function governor() external view returns (address);\n\n function providersAggregator() external view returns (IPriceProvidersAggregator);\n\n function stableCoinProvider() external view returns (IStableCoinProvider);\n}\n"
},
"contracts/interfaces/core/IPriceProvider.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\ninterface IPriceProvider {\n /**\n * @notice Get USD (or equivalent) price of an asset\n * @param token_ The address of asset\n * @return _priceInUsd The USD price\n * @return _lastUpdatedAt Last updated timestamp\n */\n function getPriceInUsd(address token_) external view returns (uint256 _priceInUsd, uint256 _lastUpdatedAt);\n\n /**\n * @notice Get quote\n * @param tokenIn_ The address of assetIn\n * @param tokenOut_ The address of assetOut\n * @param amountIn_ Amount of input token\n * @return _amountOut Amount out\n * @return _tokenInLastUpdatedAt Last updated timestamp of `tokenIn_`\n * @return _tokenOutLastUpdatedAt Last updated timestamp of `tokenOut_`\n */\n function quote(\n address tokenIn_,\n address tokenOut_,\n uint256 amountIn_\n )\n external\n view\n returns (\n uint256 _amountOut,\n uint256 _tokenInLastUpdatedAt,\n uint256 _tokenOutLastUpdatedAt\n );\n\n /**\n * @notice Get quote in USD (or equivalent) amount\n * @param token_ The address of assetIn\n * @param amountIn_ Amount of input token.\n * @return amountOut_ Amount in USD\n * @return _lastUpdatedAt Last updated timestamp\n */\n function quoteTokenToUsd(address token_, uint256 amountIn_)\n external\n view\n returns (uint256 amountOut_, uint256 _lastUpdatedAt);\n\n /**\n * @notice Get quote from USD (or equivalent) amount to amount of token\n * @param token_ The address of assetOut\n * @param amountIn_ Input amount in USD\n * @return _amountOut Output amount of token\n * @return _lastUpdatedAt Last updated timestamp\n */\n function quoteUsdToToken(address token_, uint256 amountIn_)\n external\n view\n returns (uint256 _amountOut, uint256 _lastUpdatedAt);\n}\n"
},
"contracts/interfaces/core/IPriceProvidersAggregator.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"../../libraries/DataTypes.sol\";\nimport \"./IPriceProvider.sol\";\n\n/**\n * @notice PriceProvidersAggregator interface\n * @dev Worth noting that the `_lastUpdatedAt` logic depends on the underlying price provider. In summary:\n * ChainLink: returns the last updated date from the aggregator\n * UniswapV2: returns the date of the latest pair oracle update\n * UniswapV3: assumes that the price is always updated (returns block.timestamp)\n * Flux: returns the last updated date from the aggregator\n * Umbrella (FCD): returns the last updated date returned from their oracle contract\n * Umbrella (Passport): returns the date of the latest pallet submission\n * Anytime that a quote performs more than one query, it uses the oldest date as the `_lastUpdatedAt`.\n * See more: https://github.com/bloqpriv/one-oracle/issues/64\n */\ninterface IPriceProvidersAggregator {\n /**\n * @notice Get USD (or equivalent) price of an asset\n * @param provider_ The price provider to get quote from\n * @param token_ The address of asset\n * @return _priceInUsd The USD price\n * @return _lastUpdatedAt Last updated timestamp\n */\n function getPriceInUsd(DataTypes.Provider provider_, address token_)\n external\n view\n returns (uint256 _priceInUsd, uint256 _lastUpdatedAt);\n\n /**\n * @notice Provider Providers' mapping\n */\n function priceProviders(DataTypes.Provider provider_) external view returns (IPriceProvider _priceProvider);\n\n /**\n * @notice Get quote\n * @param provider_ The price provider to get quote from\n * @param tokenIn_ The address of assetIn\n * @param tokenOut_ The address of assetOut\n * @param amountIn_ Amount of input token\n * @return _amountOut Amount out\n * @return _tokenInLastUpdatedAt Last updated timestamp of `tokenIn_`\n * @return _tokenOutLastUpdatedAt Last updated timestamp of `tokenOut_`\n */\n function quote(\n DataTypes.Provider provider_,\n address tokenIn_,\n address tokenOut_,\n uint256 amountIn_\n )\n external\n view\n returns (\n uint256 _amountOut,\n uint256 _tokenInLastUpdatedAt,\n uint256 _tokenOutLastUpdatedAt\n );\n\n /**\n * @notice Get quote\n * @dev If providers aren't the same, uses native token as \"bridge\"\n * @param providerIn_ The price provider to get quote for the tokenIn\n * @param tokenIn_ The address of assetIn\n * @param providerOut_ The price provider to get quote for the tokenOut\n * @param tokenOut_ The address of assetOut\n * @param amountIn_ Amount of input token\n * @return _amountOut Amount out\n * @return _tokenInLastUpdatedAt Last updated timestamp of `tokenIn_`\n * @return _nativeTokenLastUpdatedAt Last updated timestamp of native token (i.e. WETH) used when providers aren't the same\n * @return _tokenOutLastUpdatedAt Last updated timestamp of `tokenOut_`\n */\n function quote(\n DataTypes.Provider providerIn_,\n address tokenIn_,\n DataTypes.Provider providerOut_,\n address tokenOut_,\n uint256 amountIn_\n )\n external\n view\n returns (\n uint256 _amountOut,\n uint256 _tokenInLastUpdatedAt,\n uint256 _nativeTokenLastUpdatedAt,\n uint256 _tokenOutLastUpdatedAt\n );\n\n /**\n * @notice Get quote in USD (or equivalent) amount\n * @param provider_ The price provider to get quote from\n * @param token_ The address of assetIn\n * @param amountIn_ Amount of input token.\n * @return amountOut_ Amount in USD\n * @return _lastUpdatedAt Last updated timestamp\n */\n function quoteTokenToUsd(\n DataTypes.Provider provider_,\n address token_,\n uint256 amountIn_\n ) external view returns (uint256 amountOut_, uint256 _lastUpdatedAt);\n\n /**\n * @notice Get quote from USD (or equivalent) amount to amount of token\n * @param provider_ The price provider to get quote from\n * @param token_ The address of assetOut\n * @param amountIn_ Input amount in USD\n * @return _amountOut Output amount of token\n * @return _lastUpdatedAt Last updated timestamp\n */\n function quoteUsdToToken(\n DataTypes.Provider provider_,\n address token_,\n uint256 amountIn_\n ) external view returns (uint256 _amountOut, uint256 _lastUpdatedAt);\n\n /**\n * @notice Set a price provider\n * @dev Administrative function\n * @param provider_ The provider (from enum)\n * @param priceProvider_ The price provider contract\n */\n function setPriceProvider(DataTypes.Provider provider_, IPriceProvider priceProvider_) external;\n}\n"
},
"contracts/interfaces/core/IStableCoinProvider.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\ninterface IStableCoinProvider {\n /**\n * @notice Return the stable coin if pegged\n * @dev Check price relation between both stable coins and revert if peg is too loose\n * @return _stableCoin The primary stable coin if pass all checks\n */\n function getStableCoinIfPegged() external view returns (address _stableCoin);\n\n /**\n * @notice Convert given amount of stable coin to USD representation (18 decimals)\n */\n function toUsdRepresentation(uint256 stableCoinAmount_) external view returns (uint256 _usdAmount);\n}\n"
},
"contracts/interfaces/swapper/IExchange.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity <=0.8.9;\n\n/**\n * @notice Exchange interface\n */\ninterface IExchange {\n /**\n * @notice Get *spot* quote\n * It will return the swap amount based on the current reserves of the given path (i.e. spot price)\n * @dev It shouldn't be used as oracle!!!\n */\n function getAmountsIn(uint256 _amountOut, bytes memory path_) external returns (uint256 _amountIn);\n\n /**\n * @notice Get *spot* quote\n * It will return the swap amount based on the current reserves of the given path (i.e. spot price)\n * @dev It shouldn't be used as oracle!!!\n */\n function getAmountsOut(uint256 amountIn_, bytes memory path_) external returns (uint256 _amountOut);\n\n /**\n * @notice Get *spot* quote\n * It will return the swap amount based on the current reserves of the best pair/path found (i.e. spot price)\n * @dev It shouldn't be used as oracle!!!\n */\n function getBestAmountIn(\n address tokenIn_,\n address tokenOut_,\n uint256 amountOut_\n ) external returns (uint256 _amountIn, bytes memory _path);\n\n /**\n * @notice Get *spot* quote\n * It will return the swap amount based on the current reserves of the best pair/path found (i.e. spot price)\n * @dev It shouldn't be used as oracle!!!\n */\n function getBestAmountOut(\n address tokenIn_,\n address tokenOut_,\n uint256 amountIn_\n ) external returns (uint256 _amountOut, bytes memory _path);\n\n /**\n * @notice Perform an exact input swap\n * @dev Should transfer `amountIn_` before performing swap\n */\n function swapExactInput(\n bytes calldata path_,\n uint256 amountIn_,\n uint256 amountOutMin_,\n address outReceiver_\n ) external returns (uint256 _amountOut);\n\n /**\n * @notice Perform an exact output swap\n * @dev Should transfer `amountInMax_` before performing swap\n * @dev Sends swap remains - if any - to the `inSender_`\n */\n function swapExactOutput(\n bytes calldata path_,\n uint256 amountOut_,\n uint256 amountInMax_,\n address inSender_,\n address outRecipient_\n ) external returns (uint256 _amountIn);\n}\n"
},
"contracts/libraries/DataTypes.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nlibrary DataTypes {\n /**\n * @notice Price providers enumeration\n */\n enum Provider {\n NONE,\n CHAINLINK,\n UNISWAP_V3,\n UNISWAP_V2,\n SUSHISWAP,\n TRADERJOE,\n PANGOLIN,\n QUICKSWAP,\n UMBRELLA_FIRST_CLASS,\n UMBRELLA_PASSPORT,\n FLUX\n }\n\n enum ExchangeType {\n UNISWAP_V2,\n SUSHISWAP,\n TRADERJOE,\n PANGOLIN,\n QUICKSWAP,\n UNISWAP_V3,\n PANCAKE_SWAP,\n CURVE\n }\n\n enum SwapType {\n EXACT_INPUT,\n EXACT_OUTPUT\n }\n}\n"
},
"contracts/swapper/UniswapV2LikeExchange.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity 0.8.9;\n\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport \"../dependencies/uniswap/libraries/UniswapV2Library.sol\";\nimport \"../access/Governable.sol\";\nimport \"../interfaces/swapper/IExchange.sol\";\n\n/**\n * @notice UniswapV2 Like Exchange\n */\ncontract UniswapV2LikeExchange is IExchange, Governable {\n using SafeERC20 for IERC20;\n\n /**\n * @notice The WETH-Like token (a.k.a. Native Token)\n * @dev I.e. should be the most liquid token that offer best routers among trade pairs\n * @dev It's usually the wrapper token of the chain's native coin but it isn't always true\n * For instance: On Polygon, the `WETH` is more liquid than `WMATIC` on UniV3 protocol.\n */\n address public wethLike;\n\n /**\n * @notice The UniswapV2-Like factory contract\n */\n address public immutable factory;\n\n bytes32 internal immutable initCodeHash;\n /// @notice Emitted when wethLike token is updated\n event WethLikeTokenUpdated(address oldWethLike, address newWethLike);\n\n /**\n * @dev Doesn't consider router.WETH() as `wethLike` because isn't guaranteed that it's the most liquid token.\n */\n constructor(\n address factory_,\n bytes32 initCodeHash_,\n address wethLike_\n ) {\n factory = factory_;\n initCodeHash = initCodeHash_;\n wethLike = wethLike_;\n }\n\n /// @inheritdoc IExchange\n function getAmountsIn(uint256 amountOut_, bytes memory path_) external view override returns (uint256 _amountIn) {\n _amountIn = getAmountsIn(amountOut_, _decodePath(path_));\n }\n\n /// @inheritdoc IExchange\n function getAmountsOut(uint256 amountIn_, bytes memory path_) external view override returns (uint256 _amountOut) {\n _amountOut = getAmountsOut(amountIn_, _decodePath(path_));\n }\n\n /**\n * @dev getBestAmountIn require a try/catch version of getAmountsIn and try/catch do not work with internal\n * library functions, hence wrapped library call in this function so that it can be used in try/catch\n */\n function getAmountsIn(uint256 amountOut_, address[] memory path_) public view returns (uint256 _amountIn) {\n _amountIn = UniswapV2Library.getAmountsIn(factory, initCodeHash, amountOut_, path_)[0];\n }\n\n /**\n * @dev getBestAmountOut require a try/catch version of getAmountsOut and try/catch do not work with internal\n * library functions, hence wrapped library call in this function so that it can be used in try/catch\n */\n function getAmountsOut(uint256 amountIn_, address[] memory path_) public view returns (uint256 _amountOut) {\n _amountOut = UniswapV2Library.getAmountsOut(factory, initCodeHash, amountIn_, path_)[path_.length - 1];\n }\n\n /// @inheritdoc IExchange\n function getBestAmountIn(\n address tokenIn_,\n address tokenOut_,\n uint256 amountOut_\n ) external returns (uint256 _amountIn, bytes memory _path) {\n // 1. Check IN-OUT pair\n address[] memory _pathA = new address[](2);\n _pathA[0] = tokenIn_;\n _pathA[1] = tokenOut_;\n uint256 _amountInA = _getAmountsIn(amountOut_, _pathA);\n\n if (tokenIn_ == wethLike || tokenOut_ == wethLike) {\n // Returns if one of the token is WETH-Like\n require(_amountInA > 0, \"no-path-found\");\n return (_amountInA, _encodePath(_pathA));\n }\n\n // 2. Check IN-WETH-OUT path\n address[] memory _pathB = new address[](3);\n _pathB[0] = tokenIn_;\n _pathB[1] = wethLike;\n _pathB[2] = tokenOut_;\n uint256 _amountInB = _getAmountsIn(amountOut_, _pathB);\n\n // 3. Get best route between paths A and B\n require(_amountInA > 0 || _amountInB > 0, \"no-path-found\");\n\n // Returns A if it's valid and better than B or if B isn't valid\n if ((_amountInA > 0 && _amountInA < _amountInB) || _amountInB == 0) {\n return (_amountInA, _encodePath(_pathA));\n }\n return (_amountInB, _encodePath(_pathB));\n }\n\n /// @inheritdoc IExchange\n function getBestAmountOut(\n address tokenIn_,\n address tokenOut_,\n uint256 amountIn_\n ) external returns (uint256 _amountOut, bytes memory _path) {\n // 1. Check IN-OUT pair\n address[] memory _pathA = new address[](2);\n _pathA[0] = tokenIn_;\n _pathA[1] = tokenOut_;\n uint256 _amountOutA = _getAmountsOut(amountIn_, _pathA);\n\n if (tokenIn_ == wethLike || tokenOut_ == wethLike) {\n // Returns if one of the token is WETH-Like\n require(_amountOutA > 0, \"no-path-found\");\n return (_amountOutA, _encodePath(_pathA));\n }\n\n // 2. Check IN-WETH-OUT path\n address[] memory _pathB = new address[](3);\n _pathB[0] = tokenIn_;\n _pathB[1] = wethLike;\n _pathB[2] = tokenOut_;\n uint256 _amountOutB = _getAmountsOut(amountIn_, _pathB);\n\n // 3. Get best route between paths A and B\n require(_amountOutA > 0 || _amountOutB > 0, \"no-path-found\");\n if (_amountOutA > _amountOutB) return (_amountOutA, _encodePath(_pathA));\n return (_amountOutB, _encodePath(_pathB));\n }\n\n /// @inheritdoc IExchange\n function swapExactInput(\n bytes calldata path_,\n uint256 amountIn_,\n uint256 amountOutMin_,\n address outReceiver_\n ) external returns (uint256 _amountOut) {\n address[] memory _path = _decodePath(path_);\n IERC20 _tokenIn = IERC20(_path[0]);\n IERC20 _tokenOut = IERC20(_path[_path.length - 1]);\n\n _tokenIn.safeTransfer(UniswapV2Library.pairFor(factory, initCodeHash, _path[0], _path[1]), amountIn_);\n uint256 balanceBefore = _tokenOut.balanceOf(outReceiver_);\n _swap(_path, outReceiver_);\n _amountOut = _tokenOut.balanceOf(outReceiver_) - balanceBefore;\n require(_amountOut >= amountOutMin_, \"Too little received\");\n }\n\n /// @inheritdoc IExchange\n function swapExactOutput(\n bytes calldata path_,\n uint256 amountOut_,\n uint256 amountInMax_,\n address inSender_,\n address outRecipient_\n ) external returns (uint256 _amountIn) {\n address[] memory _path = _decodePath(path_);\n IERC20 _tokenIn = IERC20(_path[0]);\n\n _amountIn = UniswapV2Library.getAmountsIn(factory, initCodeHash, amountOut_, _path)[0];\n require(_amountIn <= amountInMax_, \"Too much requested\");\n\n _tokenIn.safeTransfer(UniswapV2Library.pairFor(factory, initCodeHash, _path[0], _path[1]), _amountIn);\n _swap(_path, outRecipient_);\n\n // If swap end up costly less than _amountInMax then return remaining\n uint256 _remainingAmountIn = amountInMax_ - _amountIn;\n if (_remainingAmountIn > 0) {\n _tokenIn.safeTransfer(inSender_, _remainingAmountIn);\n }\n }\n\n /// @dev Returns `0` if reverts\n function _getAmountsIn(uint256 _amountOut, address[] memory _path) internal view returns (uint256 _amountIn) {\n try this.getAmountsIn(_amountOut, _path) returns (uint256 amountIn) {\n _amountIn = amountIn;\n } catch {}\n }\n\n /// @dev Returns `0` if reverts\n function _getAmountsOut(uint256 amountIn_, address[] memory path_) internal view returns (uint256 _amountOut) {\n try this.getAmountsOut(amountIn_, path_) returns (uint256 amountOut) {\n _amountOut = amountOut;\n } catch {}\n }\n\n /**\n * @notice Encode path from `address[]` to `bytes`\n */\n function _encodePath(address[] memory path_) private pure returns (bytes memory _path) {\n return abi.encode(path_);\n }\n\n /**\n * @notice Encode path from `bytes` to `address[]`\n */\n function _decodePath(bytes memory path_) private pure returns (address[] memory _path) {\n return abi.decode(path_, (address[]));\n }\n\n /**\n * NOTICE:: This function is being used as is from Uniswap's V2SwapRouter.sol deployed\n * at 0x68b3465833fb72A70ecDF485E0e4C7bD8665Fc45 and licensed under GPL-2.0-or-later.\n * - It does supports fee-on-transfer tokens\n * - It does requires the initial amount to have already been sent to the first pair\n */\n function _swap(address[] memory path, address _to) private {\n for (uint256 i; i < path.length - 1; i++) {\n (address input, address output) = (path[i], path[i + 1]);\n (address token0, ) = UniswapV2Library.sortTokens(input, output);\n IUniswapV2Pair pair = IUniswapV2Pair(UniswapV2Library.pairFor(factory, initCodeHash, input, output));\n uint256 amountInput;\n uint256 amountOutput;\n // scope to avoid stack too deep errors\n {\n (uint256 reserve0, uint256 reserve1, ) = pair.getReserves();\n (uint256 reserveInput, uint256 reserveOutput) = input == token0\n ? (reserve0, reserve1)\n : (reserve1, reserve0);\n amountInput = IERC20(input).balanceOf(address(pair)) - reserveInput;\n amountOutput = UniswapV2Library.getAmountOut(amountInput, reserveInput, reserveOutput);\n }\n (uint256 amount0Out, uint256 amount1Out) = input == token0\n ? (uint256(0), amountOutput)\n : (amountOutput, uint256(0));\n address to = i < path.length - 2\n ? UniswapV2Library.pairFor(factory, initCodeHash, output, path[i + 2])\n : _to;\n pair.swap(amount0Out, amount1Out, to, new bytes(0));\n }\n }\n\n /**\n * @notice Update WETH-Like token\n */\n function updateWethLikeToken(address wethLike_) external onlyGovernor {\n emit WethLikeTokenUpdated(wethLike, wethLike_);\n wethLike = wethLike_;\n }\n}\n"
}
}
} |