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{
"language": "Solidity",
"sources": {
"StrategyZaps.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.9;\n\nimport \"SafeERC20.sol\";\nimport \"ERC20.sol\";\nimport \"StrategyBase.sol\";\nimport \"IGenericVault.sol\";\nimport \"IUniV2Router.sol\";\nimport \"IWETH.sol\";\n\ncontract AuraBalZaps is AuraBalStrategyBase {\n using SafeERC20 for IERC20;\n\n address public immutable vault;\n bytes32 private constant BAL_ETH_POOL_ID =\n 0x5c6ee304399dbdb9c8ef030ab642b10820db8f56000200000000000000000014;\n bytes32 private constant AURABAL_BAL_ETH_BPT_POOL_ID =\n 0x3dd0843a028c86e0b760b1a76929d1c5ef93a2dd000200000000000000000249;\n\n constructor(address _vault) {\n vault = _vault;\n }\n\n /// @notice Set approvals for the contracts used when swapping & staking\n function setApprovals() external {\n IERC20(BAL_TOKEN).safeApprove(BAL_VAULT, 0);\n IERC20(BAL_TOKEN).safeApprove(BAL_VAULT, type(uint256).max);\n IERC20(WETH_TOKEN).safeApprove(BAL_VAULT, 0);\n IERC20(WETH_TOKEN).safeApprove(BAL_VAULT, type(uint256).max);\n IERC20(AURABAL_TOKEN).safeApprove(BAL_VAULT, 0);\n IERC20(AURABAL_TOKEN).safeApprove(BAL_VAULT, type(uint256).max);\n IERC20(AURABAL_TOKEN).safeApprove(vault, 0);\n IERC20(AURABAL_TOKEN).safeApprove(vault, type(uint256).max);\n IERC20(BAL_ETH_POOL_TOKEN).safeApprove(BAL_VAULT, 0);\n IERC20(BAL_ETH_POOL_TOKEN).safeApprove(BAL_VAULT, type(uint256).max);\n IERC20(BAL_ETH_POOL_TOKEN).safeApprove(AURABAL_PT_DEPOSIT, 0);\n IERC20(BAL_ETH_POOL_TOKEN).safeApprove(\n AURABAL_PT_DEPOSIT,\n type(uint256).max\n );\n }\n\n /// @notice Deposit from BAL and/or WETH\n /// @param _amounts - the amounts of BAL and WETH to deposit respectively\n /// @param _minAmountOut - min amount of LP tokens expected\n /// @param _to - address to stake on behalf of\n function depositFromUnderlyingAssets(\n uint256[2] calldata _amounts,\n uint256 _minAmountOut,\n address _to,\n bool _lock\n ) external notToZeroAddress(_to) {\n if (_amounts[0] > 0) {\n IERC20(BAL_TOKEN).safeTransferFrom(\n msg.sender,\n address(this),\n _amounts[0]\n );\n }\n if (_amounts[1] > 0) {\n IERC20(WETH_TOKEN).safeTransferFrom(\n msg.sender,\n address(this),\n _amounts[1]\n );\n }\n _addAndDeposit(_amounts, _minAmountOut, _to, _lock);\n }\n\n function _addAndDeposit(\n uint256[2] memory _amounts,\n uint256 _minAmountOut,\n address _to,\n bool _lock\n ) internal {\n _depositToBalEthPool(\n _amounts[0],\n _amounts[1],\n _lock ? _minAmountOut : 0\n );\n uint256 _bptBalance = IERC20(BAL_ETH_POOL_TOKEN).balanceOf(\n address(this)\n );\n if (_lock) {\n bptDepositor.deposit(_bptBalance, true, address(0));\n } else {\n _swapBptToAuraBal(_bptBalance, _minAmountOut);\n }\n IGenericVault(vault).depositAll(_to);\n }\n\n /// @notice Deposit into the pounder from ETH\n /// @param _minAmountOut - min amount of lp tokens expected\n /// @param _to - address to stake on behalf of\n function depositFromEth(\n uint256 _minAmountOut,\n address _to,\n bool _lock\n ) external payable notToZeroAddress(_to) {\n require(msg.value > 0, \"cheap\");\n _depositFromEth(msg.value, _minAmountOut, _to, _lock);\n }\n\n /// @notice Internal function to deposit ETH to the pounder\n /// @param _amount - amount of ETH\n /// @param _minAmountOut - min amount of lp tokens expected\n /// @param _to - address to stake on behalf of\n function _depositFromEth(\n uint256 _amount,\n uint256 _minAmountOut,\n address _to,\n bool _lock\n ) internal {\n IWETH(WETH_TOKEN).deposit{value: _amount}();\n _addAndDeposit([0, _amount], _minAmountOut, _to, _lock);\n }\n\n /// @notice Deposit into the pounder from any token via Uni interface\n /// @notice Use at your own risk\n /// @dev Zap contract needs approval for spending of inputToken\n /// @param _amount - min amount of input token\n /// @param _minAmountOut - min amount of cvxCRV expected\n /// @param _router - address of the router to use. e.g. 0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F for Sushi\n /// @param _inputToken - address of the token to swap from, needs to have an ETH pair on router used\n /// @param _to - address to stake on behalf of\n function depositViaUniV2EthPair(\n uint256 _amount,\n uint256 _minAmountOut,\n address _router,\n address _inputToken,\n address _to,\n bool _lock\n ) external notToZeroAddress(_to) {\n require(_router != address(0));\n\n IERC20(_inputToken).safeTransferFrom(\n msg.sender,\n address(this),\n _amount\n );\n address[] memory _path = new address[](2);\n _path[0] = _inputToken;\n _path[1] = WETH_TOKEN;\n\n IERC20(_inputToken).safeApprove(_router, 0);\n IERC20(_inputToken).safeApprove(_router, _amount);\n\n IUniV2Router(_router).swapExactTokensForETH(\n _amount,\n 1,\n _path,\n address(this),\n block.timestamp + 1\n );\n _depositFromEth(address(this).balance, _minAmountOut, _to, _lock);\n }\n\n /// @notice Retrieves a user's vault shares and withdraw all\n /// then converts auraBal back to LP token\n /// @param _amount - amount of shares to retrieve\n /// @return amount of 80ETH-20BAL BPT obtained after the swap\n function _claimAndWithdraw(uint256 _amount) internal returns (uint256) {\n IERC20(vault).safeTransferFrom(msg.sender, address(this), _amount);\n IGenericVault(vault).withdrawAll(address(this));\n\n IBalancerVault.SingleSwap memory _auraBalSwapParams = IBalancerVault\n .SingleSwap({\n poolId: AURABAL_BAL_ETH_BPT_POOL_ID,\n kind: IBalancerVault.SwapKind.GIVEN_IN,\n assetIn: IAsset(AURABAL_TOKEN),\n assetOut: IAsset(BAL_ETH_POOL_TOKEN),\n amount: IERC20(AURABAL_TOKEN).balanceOf(address(this)),\n userData: new bytes(0)\n });\n\n return\n balVault.swap(\n _auraBalSwapParams,\n _createSwapFunds(),\n 0,\n block.timestamp + 1\n );\n }\n\n /// @notice Claim as either BAL or WETH/ETH\n /// @param _amount - amount to withdraw\n /// @param _assetIndex - asset to withdraw (0: BAL, 1: ETH)\n /// @param _minAmountOut - minimum amount of underlying tokens expected\n /// @param _to - address to send withdrawn underlying to\n /// @param _useWrappedEth - whether to use WETH or unwrap\n function claimFromVaultAsUnderlying(\n uint256 _amount,\n uint256 _assetIndex,\n uint256 _minAmountOut,\n address _to,\n bool _useWrappedEth\n ) public notToZeroAddress(_to) {\n _claimAndWithdraw(_amount);\n\n IAsset[] memory _assets = new IAsset[](2);\n _assets[0] = IAsset(BAL_TOKEN);\n _assets[1] = IAsset(_useWrappedEth ? WETH_TOKEN : address(0));\n\n uint256[] memory _amountsOut = new uint256[](2);\n _amountsOut[0] = _assetIndex == 0 ? _minAmountOut : 0;\n _amountsOut[1] = _assetIndex == 1 ? _minAmountOut : 0;\n\n balVault.exitPool(\n BAL_ETH_POOL_ID,\n address(this),\n payable(_to),\n IBalancerVault.ExitPoolRequest(\n _assets,\n _amountsOut,\n abi.encode(\n ExitKind.EXACT_BPT_IN_FOR_ONE_TOKEN_OUT,\n IERC20(BAL_ETH_POOL_TOKEN).balanceOf(address(this)),\n _assetIndex\n ),\n false\n )\n );\n }\n\n /// @notice Claim to any token via a univ2 router\n /// @notice Use at your own risk\n /// @param _amount - amount of uFXS to unstake\n /// @param _minAmountOut - min amount of output token expected\n /// @param _router - address of the router to use. e.g. 0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F for Sushi\n /// @param _outputToken - address of the token to swap to\n /// @param _to - address of the final recipient of the swapped tokens\n function claimFromVaultViaUniV2EthPair(\n uint256 _amount,\n uint256 _minAmountOut,\n address _router,\n address _outputToken,\n address _to\n ) public notToZeroAddress(_to) {\n require(_router != address(0));\n claimFromVaultAsUnderlying(_amount, 1, 0, address(this), false);\n address[] memory _path = new address[](2);\n _path[0] = WETH_TOKEN;\n _path[1] = _outputToken;\n IUniV2Router(_router).swapExactETHForTokens{\n value: address(this).balance\n }(_minAmountOut, _path, _to, block.timestamp + 1);\n }\n\n modifier notToZeroAddress(address _to) {\n require(_to != address(0), \"Invalid address!\");\n _;\n }\n}\n"
},
"SafeERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"IERC20.sol\";\nimport \"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(IERC20 token, address to, uint256 value) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n }\n\n function safeTransferFrom(IERC20 token, address from, address to, uint256 value) 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(IERC20 token, address spender, uint256 value) 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 // solhint-disable-next-line max-line-length\n require((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(IERC20 token, address spender, uint256 value) 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(IERC20 token, address spender, uint256 value) 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) { // Return data is optional\n // solhint-disable-next-line max-line-length\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n }\n }\n}\n"
},
"IERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\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 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 `recipient`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address recipient, 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 `sender` to `recipient` 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(address sender, address recipient, uint256 amount) external returns (bool);\n\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"
},
"Address.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\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 function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize, which returns 0 for contracts in\n // construction, since the code is only stored at the end of the\n // constructor execution.\n\n uint256 size;\n // solhint-disable-next-line no-inline-assembly\n assembly { size := extcodesize(account) }\n return size > 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 // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\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(address target, bytes memory data, string memory errorMessage) 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(address target, bytes memory data, uint256 value) 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(address target, bytes memory data, uint256 value, string memory errorMessage) 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 // solhint-disable-next-line avoid-low-level-calls\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(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n // solhint-disable-next-line avoid-low-level-calls\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(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n // solhint-disable-next-line avoid-low-level-calls\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return _verifyCallResult(success, returndata, errorMessage);\n }\n\n function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private 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 // solhint-disable-next-line no-inline-assembly\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"
},
"ERC20.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"IERC20.sol\";\nimport \"IERC20Metadata.sol\";\nimport \"Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * We have followed general OpenZeppelin guidelines: functions revert instead\n * of returning `false` on failure. This behavior is nonetheless conventional\n * and does not conflict with the expectations of ERC20 applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping (address => uint256) private _balances;\n\n mapping (address => mapping (address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n string private _symbol;\n\n /**\n * @dev Sets the values for {name} and {symbol}.\n *\n * The defaut value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n constructor (string memory name_, string memory symbol_) {\n _name = name_;\n _symbol = symbol_;\n }\n\n /**\n * @dev Returns the name of the token.\n */\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n /**\n * @dev Returns the symbol of the token, usually a shorter version of the\n * name.\n */\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n /**\n * @dev Returns the number of decimals used to get its user representation.\n * For example, if `decimals` equals `2`, a balance of `505` tokens should\n * be displayed to a user as `5,05` (`505 / 10 ** 2`).\n *\n * Tokens usually opt for a value of 18, imitating the relationship between\n * Ether and Wei. This is the value {ERC20} uses, unless this function is\n * overridden;\n *\n * NOTE: This information is only used for _display_ purposes: it in\n * no way affects any of the arithmetic of the contract, including\n * {IERC20-balanceOf} and {IERC20-transfer}.\n */\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n /**\n * @dev See {IERC20-totalSupply}.\n */\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n /**\n * @dev See {IERC20-balanceOf}.\n */\n function balanceOf(address account) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n /**\n * @dev See {IERC20-transfer}.\n *\n * Requirements:\n *\n * - `recipient` cannot be the zero address.\n * - the caller must have a balance of at least `amount`.\n */\n function transfer(address recipient, uint256 amount) public virtual override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-allowance}.\n */\n function allowance(address owner, address spender) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n /**\n * @dev See {IERC20-approve}.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function approve(address spender, uint256 amount) public virtual override returns (bool) {\n _approve(_msgSender(), spender, amount);\n return true;\n }\n\n /**\n * @dev See {IERC20-transferFrom}.\n *\n * Emits an {Approval} event indicating the updated allowance. This is not\n * required by the EIP. See the note at the beginning of {ERC20}.\n *\n * Requirements:\n *\n * - `sender` and `recipient` cannot be the zero address.\n * - `sender` must have a balance of at least `amount`.\n * - the caller must have allowance for ``sender``'s tokens of at least\n * `amount`.\n */\n function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {\n _transfer(sender, recipient, amount);\n\n uint256 currentAllowance = _allowances[sender][_msgSender()];\n require(currentAllowance >= amount, \"ERC20: transfer amount exceeds allowance\");\n _approve(sender, _msgSender(), currentAllowance - amount);\n\n return true;\n }\n\n /**\n * @dev Atomically increases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n */\n function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);\n return true;\n }\n\n /**\n * @dev Atomically decreases the allowance granted to `spender` by the caller.\n *\n * This is an alternative to {approve} that can be used as a mitigation for\n * problems described in {IERC20-approve}.\n *\n * Emits an {Approval} event indicating the updated allowance.\n *\n * Requirements:\n *\n * - `spender` cannot be the zero address.\n * - `spender` must have allowance for the caller of at least\n * `subtractedValue`.\n */\n function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n uint256 currentAllowance = _allowances[_msgSender()][spender];\n require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n _approve(_msgSender(), spender, currentAllowance - subtractedValue);\n\n return true;\n }\n\n /**\n * @dev Moves tokens `amount` from `sender` to `recipient`.\n *\n * This is internal function is equivalent to {transfer}, and can be used to\n * e.g. implement automatic token fees, slashing mechanisms, etc.\n *\n * Emits a {Transfer} event.\n *\n * Requirements:\n *\n * - `sender` cannot be the zero address.\n * - `recipient` cannot be the zero address.\n * - `sender` must have a balance of at least `amount`.\n */\n function _transfer(address sender, address recipient, uint256 amount) internal virtual {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(sender, recipient, amount);\n\n uint256 senderBalance = _balances[sender];\n require(senderBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n _balances[sender] = senderBalance - amount;\n _balances[recipient] += amount;\n\n emit Transfer(sender, recipient, amount);\n }\n\n /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n * the total supply.\n *\n * Emits a {Transfer} event with `from` set to the zero address.\n *\n * Requirements:\n *\n * - `to` cannot be the zero address.\n */\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n _balances[account] += amount;\n emit Transfer(address(0), account, amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, reducing the\n * total supply.\n *\n * Emits a {Transfer} event with `to` set to the zero address.\n *\n * Requirements:\n *\n * - `account` cannot be the zero address.\n * - `account` must have at least `amount` tokens.\n */\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n _balances[account] = accountBalance - amount;\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n }\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n *\n * This internal function is equivalent to `approve`, and can be used to\n * e.g. set automatic allowances for certain subsystems, etc.\n *\n * Emits an {Approval} event.\n *\n * Requirements:\n *\n * - `owner` cannot be the zero address.\n * - `spender` cannot be the zero address.\n */\n function _approve(address owner, address spender, uint256 amount) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n emit Approval(owner, spender, amount);\n }\n\n /**\n * @dev Hook that is called before any transfer of tokens. This includes\n * minting and burning.\n *\n * Calling conditions:\n *\n * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n * will be to transferred to `to`.\n * - when `from` is zero, `amount` tokens will be minted for `to`.\n * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n * - `from` and `to` are never both zero.\n *\n * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n */\n function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }\n}\n"
},
"IERC20Metadata.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\nimport \"IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n /**\n * @dev Returns the name of the token.\n */\n function name() external view returns (string memory);\n\n /**\n * @dev Returns the symbol of the token.\n */\n function symbol() external view returns (string memory);\n\n /**\n * @dev Returns the decimals places of the token.\n */\n function decimals() external view returns (uint8);\n}\n"
},
"Context.sol": {
"content": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\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 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 */\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691\n return msg.data;\n }\n}\n"
},
"StrategyBase.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.9;\n\nimport \"IBasicRewards.sol\";\nimport \"IBalancer.sol\";\nimport \"IAsset.sol\";\nimport \"IBalPtDeposit.sol\";\n\ncontract AuraBalStrategyBase {\n address public constant AURABAL_PT_DEPOSIT =\n 0xeAd792B55340Aa20181A80d6a16db6A0ECd1b827;\n address public constant AURABAL_STAKING =\n 0x00A7BA8Ae7bca0B10A32Ea1f8e2a1Da980c6CAd2;\n address public constant BAL_VAULT =\n 0xBA12222222228d8Ba445958a75a0704d566BF2C8;\n\n address public constant BBUSD_TOKEN =\n 0x7B50775383d3D6f0215A8F290f2C9e2eEBBEceb2;\n address public constant AURA_TOKEN =\n 0xC0c293ce456fF0ED870ADd98a0828Dd4d2903DBF;\n address public constant AURABAL_TOKEN =\n 0x616e8BfA43F920657B3497DBf40D6b1A02D4608d;\n\n address public constant WETH_TOKEN =\n 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;\n address public constant BAL_TOKEN =\n 0xba100000625a3754423978a60c9317c58a424e3D;\n address public constant BAL_ETH_POOL_TOKEN =\n 0x5c6Ee304399DBdB9C8Ef030aB642B10820DB8F56;\n\n bytes32 private constant AURABAL_BAL_ETH_BPT_POOL_ID =\n 0x3dd0843a028c86e0b760b1a76929d1c5ef93a2dd000200000000000000000249;\n bytes32 private constant BAL_ETH_POOL_ID =\n 0x5c6ee304399dbdb9c8ef030ab642b10820db8f56000200000000000000000014;\n\n IBasicRewards public auraBalStaking = IBasicRewards(AURABAL_STAKING);\n IBalancerVault public balVault = IBalancerVault(BAL_VAULT);\n IBalPtDeposit public bptDepositor = IBalPtDeposit(AURABAL_PT_DEPOSIT);\n\n /// @notice Deposit BAL and WETH to the BAL-ETH pool\n /// @param _wethAmount - amount of wETH to deposit\n /// @param _balAmount - amount of BAL to deposit\n /// @param _minAmountOut - min amount of BPT expected\n function _depositToBalEthPool(\n uint256 _balAmount,\n uint256 _wethAmount,\n uint256 _minAmountOut\n ) internal {\n IAsset[] memory _assets = new IAsset[](2);\n _assets[0] = IAsset(BAL_TOKEN);\n _assets[1] = IAsset(WETH_TOKEN);\n\n uint256[] memory _amountsIn = new uint256[](2);\n _amountsIn[0] = _balAmount;\n _amountsIn[1] = _wethAmount;\n\n balVault.joinPool(\n BAL_ETH_POOL_ID,\n address(this),\n address(this),\n IBalancerVault.JoinPoolRequest(\n _assets,\n _amountsIn,\n abi.encode(\n JoinKind.EXACT_TOKENS_IN_FOR_BPT_OUT,\n _amountsIn,\n _minAmountOut\n ),\n false\n )\n );\n }\n\n function _swapBptToAuraBal(uint256 _amount, uint256 _minAmountOut)\n internal\n returns (uint256)\n {\n IBalancerVault.SingleSwap memory _auraSwapParams = IBalancerVault\n .SingleSwap({\n poolId: AURABAL_BAL_ETH_BPT_POOL_ID,\n kind: IBalancerVault.SwapKind.GIVEN_IN,\n assetIn: IAsset(BAL_ETH_POOL_TOKEN),\n assetOut: IAsset(AURABAL_TOKEN),\n amount: _amount,\n userData: new bytes(0)\n });\n\n return\n balVault.swap(\n _auraSwapParams,\n _createSwapFunds(),\n _minAmountOut,\n block.timestamp + 1\n );\n }\n\n /// @notice Returns a FundManagement struct used for BAL swaps\n function _createSwapFunds()\n internal\n returns (IBalancerVault.FundManagement memory)\n {\n return\n IBalancerVault.FundManagement({\n sender: address(this),\n fromInternalBalance: false,\n recipient: payable(address(this)),\n toInternalBalance: false\n });\n }\n\n receive() external payable {}\n}\n"
},
"IBasicRewards.sol": {
"content": "// SPDX-License-Identifier: UNLICENSED\npragma solidity 0.8.9;\n\ninterface IBasicRewards {\n function stakeFor(address, uint256) external returns (bool);\n\n function balanceOf(address) external view returns (uint256);\n\n function earned(address) external view returns (uint256);\n\n function withdrawAll(bool) external returns (bool);\n\n function withdraw(uint256, bool) external returns (bool);\n\n function withdrawAndUnwrap(uint256 amount, bool claim)\n external\n returns (bool);\n\n function getReward() external returns (bool);\n\n function stake(uint256) external returns (bool);\n\n function extraRewards(uint256) external view returns (address);\n\n function exit() external returns (bool);\n}\n"
},
"IBalancer.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.9;\n\nimport {IAsset} from \"IAsset.sol\";\n\nenum ExitKind {\n EXACT_BPT_IN_FOR_ONE_TOKEN_OUT,\n EXACT_BPT_IN_FOR_TOKENS_OUT,\n BPT_IN_FOR_EXACT_TOKENS_OUT\n}\n\nenum JoinKind {\n INIT,\n EXACT_TOKENS_IN_FOR_BPT_OUT,\n TOKEN_IN_FOR_EXACT_BPT_OUT,\n ALL_TOKENS_IN_FOR_EXACT_BPT_OUT,\n ADD_TOKEN // for Managed Pool\n}\n\ninterface IBalancerVault {\n /**\n * @dev Called by users to join a Pool, which transfers tokens from `sender` into the Pool's balance. This will\n * trigger custom Pool behavior, which will typically grant something in return to `recipient` - often tokenized\n * Pool shares.\n *\n * If the caller is not `sender`, it must be an authorized relayer for them.\n *\n * The `assets` and `maxAmountsIn` arrays must have the same length, and each entry indicates the maximum amount\n * to send for each asset. The amounts to send are decided by the Pool and not the Vault: it just enforces\n * these maximums.\n *\n * If joining a Pool that holds WETH, it is possible to send ETH directly: the Vault will do the wrapping. To enable\n * this mechanism, the IAsset sentinel value (the zero address) must be passed in the `assets` array instead of the\n * WETH address. Note that it is not possible to combine ETH and WETH in the same join. Any excess ETH will be sent\n * back to the caller (not the sender, which is important for relayers).\n *\n * `assets` must have the same length and order as the array returned by `getPoolTokens`. This prevents issues when\n * interacting with Pools that register and deregister tokens frequently. If sending ETH however, the array must be\n * sorted *before* replacing the WETH address with the ETH sentinel value (the zero address), which means the final\n * `assets` array might not be sorted. Pools with no registered tokens cannot be joined.\n *\n * If `fromInternalBalance` is true, the caller's Internal Balance will be preferred: ERC20 transfers will only\n * be made for the difference between the requested amount and Internal Balance (if any). Note that ETH cannot be\n * withdrawn from Internal Balance: attempting to do so will trigger a revert.\n *\n * This causes the Vault to call the `IBasePool.onJoinPool` hook on the Pool's contract, where Pools implement\n * their own custom logic. This typically requires additional information from the user (such as the expected number\n * of Pool shares). This can be encoded in the `userData` argument, which is ignored by the Vault and passed\n * directly to the Pool's contract, as is `recipient`.\n *\n * Emits a `PoolBalanceChanged` event.\n */\n function joinPool(\n bytes32 poolId,\n address sender,\n address recipient,\n JoinPoolRequest memory request\n ) external payable;\n\n struct JoinPoolRequest {\n IAsset[] assets;\n uint256[] maxAmountsIn;\n bytes userData;\n bool fromInternalBalance;\n }\n\n /**\n * @dev Called by users to exit a Pool, which transfers tokens from the Pool's balance to `recipient`. This will\n * trigger custom Pool behavior, which will typically ask for something in return from `sender` - often tokenized\n * Pool shares. The amount of tokens that can be withdrawn is limited by the Pool's `cash` balance (see\n * `getPoolTokenInfo`).\n *\n * If the caller is not `sender`, it must be an authorized relayer for them.\n *\n * The `tokens` and `minAmountsOut` arrays must have the same length, and each entry in these indicates the minimum\n * token amount to receive for each token contract. The amounts to send are decided by the Pool and not the Vault:\n * it just enforces these minimums.\n *\n * If exiting a Pool that holds WETH, it is possible to receive ETH directly: the Vault will do the unwrapping. To\n * enable this mechanism, the IAsset sentinel value (the zero address) must be passed in the `assets` array instead\n * of the WETH address. Note that it is not possible to combine ETH and WETH in the same exit.\n *\n * `assets` must have the same length and order as the array returned by `getPoolTokens`. This prevents issues when\n * interacting with Pools that register and deregister tokens frequently. If receiving ETH however, the array must\n * be sorted *before* replacing the WETH address with the ETH sentinel value (the zero address), which means the\n * final `assets` array might not be sorted. Pools with no registered tokens cannot be exited.\n *\n * If `toInternalBalance` is true, the tokens will be deposited to `recipient`'s Internal Balance. Otherwise,\n * an ERC20 transfer will be performed. Note that ETH cannot be deposited to Internal Balance: attempting to\n * do so will trigger a revert.\n *\n * `minAmountsOut` is the minimum amount of tokens the user expects to get out of the Pool, for each token in the\n * `tokens` array. This array must match the Pool's registered tokens.\n *\n * This causes the Vault to call the `IBasePool.onExitPool` hook on the Pool's contract, where Pools implement\n * their own custom logic. This typically requires additional information from the user (such as the expected number\n * of Pool shares to return). This can be encoded in the `userData` argument, which is ignored by the Vault and\n * passed directly to the Pool's contract.\n *\n * Emits a `PoolBalanceChanged` event.\n */\n function exitPool(\n bytes32 poolId,\n address sender,\n address payable recipient,\n ExitPoolRequest memory request\n ) external;\n\n struct ExitPoolRequest {\n IAsset[] assets;\n uint256[] minAmountsOut;\n bytes userData;\n bool toInternalBalance;\n }\n\n // Swaps\n //\n // Users can swap tokens with Pools by calling the `swap` and `batchSwap` functions. To do this,\n // they need not trust Pool contracts in any way: all security checks are made by the Vault. They must however be\n // aware of the Pools' pricing algorithms in order to estimate the prices Pools will quote.\n //\n // The `swap` function executes a single swap, while `batchSwap` can perform multiple swaps in sequence.\n // In each individual swap, tokens of one kind are sent from the sender to the Pool (this is the 'token in'),\n // and tokens of another kind are sent from the Pool to the recipient in exchange (this is the 'token out').\n // More complex swaps, such as one token in to multiple tokens out can be achieved by batching together\n // individual swaps.\n //\n // There are two swap kinds:\n // - 'given in' swaps, where the amount of tokens in (sent to the Pool) is known, and the Pool determines (via the\n // `onSwap` hook) the amount of tokens out (to send to the recipient).\n // - 'given out' swaps, where the amount of tokens out (received from the Pool) is known, and the Pool determines\n // (via the `onSwap` hook) the amount of tokens in (to receive from the sender).\n //\n // Additionally, it is possible to chain swaps using a placeholder input amount, which the Vault replaces with\n // the calculated output of the previous swap. If the previous swap was 'given in', this will be the calculated\n // tokenOut amount. If the previous swap was 'given out', it will use the calculated tokenIn amount. These extended\n // swaps are known as 'multihop' swaps, since they 'hop' through a number of intermediate tokens before arriving at\n // the final intended token.\n //\n // In all cases, tokens are only transferred in and out of the Vault (or withdrawn from and deposited into Internal\n // Balance) after all individual swaps have been completed, and the net token balance change computed. This makes\n // certain swap patterns, such as multihops, or swaps that interact with the same token pair in multiple Pools, cost\n // much less gas than they would otherwise.\n //\n // It also means that under certain conditions it is possible to perform arbitrage by swapping with multiple\n // Pools in a way that results in net token movement out of the Vault (profit), with no tokens being sent in (only\n // updating the Pool's internal accounting).\n //\n // To protect users from front-running or the market changing rapidly, they supply a list of 'limits' for each token\n // involved in the swap, where either the maximum number of tokens to send (by passing a positive value) or the\n // minimum amount of tokens to receive (by passing a negative value) is specified.\n //\n // Additionally, a 'deadline' timestamp can also be provided, forcing the swap to fail if it occurs after\n // this point in time (e.g. if the transaction failed to be included in a block promptly).\n //\n // If interacting with Pools that hold WETH, it is possible to both send and receive ETH directly: the Vault will do\n // the wrapping and unwrapping. To enable this mechanism, the IAsset sentinel value (the zero address) must be\n // passed in the `assets` array instead of the WETH address. Note that it is possible to combine ETH and WETH in the\n // same swap. Any excess ETH will be sent back to the caller (not the sender, which is relevant for relayers).\n //\n // Finally, Internal Balance can be used when either sending or receiving tokens.\n\n enum SwapKind {\n GIVEN_IN,\n GIVEN_OUT\n }\n\n /**\n * @dev Performs a swap with a single Pool.\n *\n * If the swap is 'given in' (the number of tokens to send to the Pool is known), it returns the amount of tokens\n * taken from the Pool, which must be greater than or equal to `limit`.\n *\n * If the swap is 'given out' (the number of tokens to take from the Pool is known), it returns the amount of tokens\n * sent to the Pool, which must be less than or equal to `limit`.\n *\n * Internal Balance usage and the recipient are determined by the `funds` struct.\n *\n * Emits a `Swap` event.\n */\n function swap(\n SingleSwap memory singleSwap,\n FundManagement memory funds,\n uint256 limit,\n uint256 deadline\n ) external payable returns (uint256);\n\n /**\n * @dev Data for a single swap executed by `swap`. `amount` is either `amountIn` or `amountOut` depending on\n * the `kind` value.\n *\n * `assetIn` and `assetOut` are either token addresses, or the IAsset sentinel value for ETH (the zero address).\n * Note that Pools never interact with ETH directly: it will be wrapped to or unwrapped from WETH by the Vault.\n *\n * The `userData` field is ignored by the Vault, but forwarded to the Pool in the `onSwap` hook, and may be\n * used to extend swap behavior.\n */\n struct SingleSwap {\n bytes32 poolId;\n SwapKind kind;\n IAsset assetIn;\n IAsset assetOut;\n uint256 amount;\n bytes userData;\n }\n\n /**\n * @dev Simulates a call to `batchSwap`, returning an array of Vault asset deltas. Calls to `swap` cannot be\n * simulated directly, but an equivalent `batchSwap` call can and will yield the exact same result.\n *\n * Each element in the array corresponds to the asset at the same index, and indicates the number of tokens (or ETH)\n * the Vault would take from the sender (if positive) or send to the recipient (if negative). The arguments it\n * receives are the same that an equivalent `batchSwap` call would receive.\n *\n * Unlike `batchSwap`, this function performs no checks on the sender or recipient field in the `funds` struct.\n * This makes it suitable to be called by off-chain applications via eth_call without needing to hold tokens,\n * approve them for the Vault, or even know a user's address.\n *\n * Note that this function is not 'view' (due to implementation details): the client code must explicitly execute\n * eth_call instead of eth_sendTransaction.\n */\n function queryBatchSwap(\n SwapKind kind,\n BatchSwapStep[] memory swaps,\n IAsset[] memory assets,\n FundManagement memory funds\n ) external returns (int256[] memory assetDeltas);\n\n /**\n * @dev Performs a series of swaps with one or multiple Pools. In each individual swap, the caller determines either\n * the amount of tokens sent to or received from the Pool, depending on the `kind` value.\n *\n * Returns an array with the net Vault asset balance deltas. Positive amounts represent tokens (or ETH) sent to the\n * Vault, and negative amounts represent tokens (or ETH) sent by the Vault. Each delta corresponds to the asset at\n * the same index in the `assets` array.\n *\n * Swaps are executed sequentially, in the order specified by the `swaps` array. Each array element describes a\n * Pool, the token to be sent to this Pool, the token to receive from it, and an amount that is either `amountIn` or\n * `amountOut` depending on the swap kind.\n *\n * Multihop swaps can be executed by passing an `amount` value of zero for a swap. This will cause the amount in/out\n * of the previous swap to be used as the amount in for the current one. In a 'given in' swap, 'tokenIn' must equal\n * the previous swap's `tokenOut`. For a 'given out' swap, `tokenOut` must equal the previous swap's `tokenIn`.\n *\n * The `assets` array contains the addresses of all assets involved in the swaps. These are either token addresses,\n * or the IAsset sentinel value for ETH (the zero address). Each entry in the `swaps` array specifies tokens in and\n * out by referencing an index in `assets`. Note that Pools never interact with ETH directly: it will be wrapped to\n * or unwrapped from WETH by the Vault.\n *\n * Internal Balance usage, sender, and recipient are determined by the `funds` struct. The `limits` array specifies\n * the minimum or maximum amount of each token the vault is allowed to transfer.\n *\n * `batchSwap` can be used to make a single swap, like `swap` does, but doing so requires more gas than the\n * equivalent `swap` call.\n *\n * Emits `Swap` events.\n */\n function batchSwap(\n SwapKind kind,\n BatchSwapStep[] memory swaps,\n IAsset[] memory assets,\n FundManagement memory funds,\n int256[] memory limits,\n uint256 deadline\n ) external payable returns (int256[] memory);\n\n /**\n * @dev Data for each individual swap executed by `batchSwap`. The asset in and out fields are indexes into the\n * `assets` array passed to that function, and ETH assets are converted to WETH.\n *\n * If `amount` is zero, the multihop mechanism is used to determine the actual amount based on the amount in/out\n * from the previous swap, depending on the swap kind.\n *\n * The `userData` field is ignored by the Vault, but forwarded to the Pool in the `onSwap` hook, and may be\n * used to extend swap behavior.\n */\n struct BatchSwapStep {\n bytes32 poolId;\n uint256 assetInIndex;\n uint256 assetOutIndex;\n uint256 amount;\n bytes userData;\n }\n\n /**\n * @dev All tokens in a swap are either sent from the `sender` account to the Vault, or from the Vault to the\n * `recipient` account.\n *\n * If the caller is not `sender`, it must be an authorized relayer for them.\n *\n * If `fromInternalBalance` is true, the `sender`'s Internal Balance will be preferred, performing an ERC20\n * transfer for the difference between the requested amount and the User's Internal Balance (if any). The `sender`\n * must have allowed the Vault to use their tokens via `IERC20.approve()`. This matches the behavior of\n * `joinPool`.\n *\n * If `toInternalBalance` is true, tokens will be deposited to `recipient`'s internal balance instead of\n * transferred. This matches the behavior of `exitPool`.\n *\n * Note that ETH cannot be deposited to or withdrawn from Internal Balance: attempting to do so will trigger a\n * revert.\n */\n struct FundManagement {\n address sender;\n bool fromInternalBalance;\n address payable recipient;\n bool toInternalBalance;\n }\n}\n"
},
"IAsset.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.9;\n\n/**\n * @dev This is an empty interface used to represent either ERC20-conforming token contracts or ETH (using the zero\n * address sentinel value). We're just relying on the fact that `interface` can be used to declare new address-like\n * types.\n *\n * This concept is unrelated to a Pool's Asset Managers.\n */\ninterface IAsset {\n // solhint-disable-previous-line no-empty-blocks\n}\n"
},
"IBalPtDeposit.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.9;\n\ninterface IBalPtDeposit {\n function deposit(\n uint256 _amount,\n bool _lock,\n address _stakeAddress\n ) external;\n}\n"
},
"IGenericVault.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.9;\n\ninterface IGenericVault {\n function withdraw(address _to, uint256 _shares)\n external\n returns (uint256 withdrawn);\n\n function withdrawAll(address _to) external returns (uint256 withdrawn);\n\n function depositAll(address _to) external returns (uint256 _shares);\n\n function deposit(address _to, uint256 _amount)\n external\n returns (uint256 _shares);\n\n function harvest() external;\n\n function balanceOfUnderlying(address user)\n external\n view\n returns (uint256 amount);\n\n function totalUnderlying() external view returns (uint256 total);\n\n function totalSupply() external view returns (uint256 total);\n\n function underlying() external view returns (address);\n\n function strategy() external view returns (address);\n\n function platform() external view returns (address);\n\n function setPlatform(address _platform) external;\n\n function setPlatformFee(uint256 _fee) external;\n\n function setCallIncentive(uint256 _incentive) external;\n\n function setWithdrawalPenalty(uint256 _penalty) external;\n\n function setApprovals() external;\n\n function callIncentive() external view returns (uint256);\n\n function platformFee() external view returns (uint256);\n}\n"
},
"IUniV2Router.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.9;\n\ninterface IUniV2Router {\n function swapExactTokensForETH(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external payable returns (uint256[] memory amounts);\n\n function swapExactETHForTokens(\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external payable returns (uint256[] memory amounts);\n\n function swapExactTokensForTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external returns (uint256[] memory amounts);\n\n function getAmountsOut(uint256 amountIn, address[] memory path)\n external\n view\n returns (uint256[] memory amounts);\n}\n"
},
"IWETH.sol": {
"content": "// SPDX-License-Identifier: MIT\npragma solidity 0.8.9;\n\ninterface IWETH {\n function deposit() external payable;\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function withdraw(uint256) external;\n}\n"
}
},
"settings": {
"evmVersion": "istanbul",
"optimizer": {
"enabled": true,
"runs": 200
},
"libraries": {
"StrategyZaps.sol": {}
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
}
}
} |