Contract

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Is this a proxy?
• Similar
• Sol2Uml
• Submit Audit
• Compare

// SPDX-License-Identifier: GPL-3.0-or-later
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;

import "@balancer-labs/v2-interfaces/contracts/liquidity-mining/IBaseGaugeFactory.sol";
import "@balancer-labs/v2-interfaces/contracts/liquidity-mining/IStakingLiquidityGauge.sol";

import "@balancer-labs/v2-solidity-utils/contracts/openzeppelin/Clones.sol";

import "../BaseGaugeFactory.sol";

contract LiquidityGaugeFactory is BaseGaugeFactory {
    constructor(IStakingLiquidityGauge gauge) BaseGaugeFactory(gauge) {
        // solhint-disable-previous-line no-empty-blocks
    }

    /**
     * @notice Deploys a new gauge for a Balancer pool.
     * @dev As anyone can register arbitrary Balancer pools with the Vault,
     * it's impossible to prove onchain that `pool` is a "valid" deployment.
     *
     * Care must be taken to ensure that gauges deployed from this factory are
     * suitable before they are added to the GaugeController.
     *
     * It is possible to deploy multiple gauges for a single pool.
     * @param pool The address of the pool for which to deploy a gauge
     * @param relativeWeightCap The relative weight cap for the created gauge
     * @return The address of the deployed gauge
     */
    function create(address pool, uint256 relativeWeightCap) external override returns (address) {
        address gauge = _create();
        IStakingLiquidityGauge(gauge).initialize(pool, relativeWeightCap);
        return gauge;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: GPL-3.0-or-later
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.7.0;

// For compatibility, we're keeping the same function names as in the original Curve code, including the mixed-case
// naming convention.
// solhint-disable func-name-mixedcase
// solhint-disable func-param-name-mixedcase

interface ILiquidityGauge {
    // solhint-disable-next-line var-name-mixedcase
    event RelativeWeightCapChanged(uint256 new_relative_weight_cap);

    /**
     * @notice Returns BAL liquidity emissions calculated during checkpoints for the given user.
     * @param user User address.
     * @return uint256 BAL amount to issue for the address.
     */
    function integrate_fraction(address user) external view returns (uint256);

    /**
     * @notice Record a checkpoint for a given user.
     * @param user User address.
     * @return bool Always true.
     */
    function user_checkpoint(address user) external returns (bool);

    /**
     * @notice Returns true if gauge is killed; false otherwise.
     */
    function is_killed() external view returns (bool);

    /**
     * @notice Kills the gauge so it cannot mint BAL.
     */
    function killGauge() external;

    /**
     * @notice Unkills the gauge so it can mint BAL again.
     */
    function unkillGauge() external;

    /**
     * @notice Sets a new relative weight cap for the gauge.
     * The value shall be normalized to 1e18, and not greater than MAX_RELATIVE_WEIGHT_CAP.
     * @param relativeWeightCap New relative weight cap.
     */
    function setRelativeWeightCap(uint256 relativeWeightCap) external;

    /**
     * @notice Gets the relative weight cap for the gauge.
     */
    function getRelativeWeightCap() external view returns (uint256);

    /**
     * @notice Returns the gauge's relative weight for a given time, capped to its relative weight cap attribute.
     * @param time Timestamp in the past or present.
     */
    function getCappedRelativeWeight(uint256 time) external view returns (uint256);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/Clones.sol)

pragma solidity ^0.7.0;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 *
 * _Available since v3.4._
 */
library Clones {
    // solhint-disable no-inline-assembly

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address implementation) internal returns (address instance) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create(0, ptr, 0x37)
        }
        require(instance != address(0), "ERC1167: create failed");
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `implementation` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
            instance := create2(0, ptr, 0x37, salt)
        }
        require(instance != address(0), "ERC1167: create2 failed");
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt,
        address deployer
    ) internal pure returns (address predicted) {
        assembly {
            let ptr := mload(0x40)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
            mstore(add(ptr, 0x14), shl(0x60, implementation))
            mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000)
            mstore(add(ptr, 0x38), shl(0x60, deployer))
            mstore(add(ptr, 0x4c), salt)
            mstore(add(ptr, 0x6c), keccak256(ptr, 0x37))
            predicted := keccak256(add(ptr, 0x37), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(address implementation, bytes32 salt)
        internal
        view
        returns (address predicted)
    {
        return predictDeterministicAddress(implementation, salt, address(this));
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.7.0;

import "@balancer-labs/v2-interfaces/contracts/liquidity-mining/IBaseGaugeFactory.sol";
import "@balancer-labs/v2-interfaces/contracts/liquidity-mining/ILiquidityGauge.sol";

import "@balancer-labs/v2-solidity-utils/contracts/openzeppelin/Clones.sol";

abstract contract BaseGaugeFactory is IBaseGaugeFactory {
    ILiquidityGauge private _gaugeImplementation;

    mapping(address => bool) private _isGaugeFromFactory;

    event GaugeCreated(address indexed gauge);

    constructor(ILiquidityGauge gaugeImplementation) {
        _gaugeImplementation = gaugeImplementation;
    }

    /**
     * @notice Returns the address of the implementation used for gauge deployments.
     */
    function getGaugeImplementation() public view returns (ILiquidityGauge) {
        return _gaugeImplementation;
    }

    /**
     * @notice Returns true if `gauge` was created by this factory.
     */
    function isGaugeFromFactory(address gauge) external view override returns (bool) {
        return _isGaugeFromFactory[gauge];
    }

    /**
     * @dev Deploys a new gauge as a proxy of the implementation in storage.
     * The deployed gauge must be initialized by the caller method.
     * @return The address of the deployed gauge
     */
    function _create() internal returns (address) {
        address gauge = Clones.clone(address(_gaugeImplementation));

        _isGaugeFromFactory[gauge] = true;
        emit GaugeCreated(gauge);

        return gauge;
    }
}

// SPDX-License-Identifier: GPL-3.0-or-later
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.7.0;

import "./ILiquidityGaugeFactory.sol";

interface IBaseGaugeFactory is ILiquidityGaugeFactory {
    /**
     * @notice Deploys a new gauge for the given recipient, with an initial maximum relative weight cap.
     * The recipient can either be a pool in mainnet, or a recipient in a child chain.
     * @param recipient The address to receive BAL minted from the gauge
     * @param relativeWeightCap The relative weight cap for the created gauge
     * @return The address of the deployed gauge
     */
    function create(address recipient, uint256 relativeWeightCap) external returns (address);
}

// SPDX-License-Identifier: GPL-3.0-or-later
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;

import "./ILiquidityGauge.sol";

interface ILiquidityGaugeFactory {
    /**
     * @notice Returns true if `gauge` was created by this factory.
     */
    function isGaugeFromFactory(address gauge) external view returns (bool);
}

// SPDX-License-Identifier: GPL-3.0-or-later
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;

import "../solidity-utils/openzeppelin/IERC20.sol";

// For compatibility, we're keeping the same function names as in the original Curve code, including the mixed-case
// naming convention.
// solhint-disable func-name-mixedcase, var-name-mixedcase

interface IRewardTokenDistributor {
    struct Reward {
        IERC20 token;
        address distributor;
        uint256 period_finish;
        uint256 rate;
        uint256 last_update;
        uint256 integral;
    }

    function reward_tokens(uint256 index) external view returns (IERC20);

    function reward_data(IERC20 token) external view returns (Reward memory);

    function claim_rewards(address user) external;

    function add_reward(IERC20 rewardToken, address distributor) external;

    function set_reward_distributor(IERC20 rewardToken, address distributor) external;

    function deposit_reward_token(IERC20 rewardToken, uint256 amount) external;

    function claimable_reward(address rewardToken, address user) external view returns (uint256);

    function claimable_reward_write(address rewardToken, address user) external returns (uint256);
}

// SPDX-License-Identifier: GPL-3.0-or-later
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;

import "../solidity-utils/openzeppelin/IERC20.sol";

import "./ILiquidityGauge.sol";
import "./IRewardTokenDistributor.sol";

// For compatibility, we're keeping the same function names as in the original Curve code, including the mixed-case
// naming convention.
// solhint-disable func-name-mixedcase, var-name-mixedcase

interface IStakingLiquidityGauge is IRewardTokenDistributor, ILiquidityGauge, IERC20 {
    function initialize(address lpToken, uint256 relativeWeightCap) external;

    function lp_token() external view returns (IERC20);

    function deposit(uint256 value, address recipient) external;

    function withdraw(uint256 value) external;
}

{
  "optimizer": {
    "enabled": true,
    "runs": 9999
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract IStakingLiquidityGauge","name":"gauge","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"gauge","type":"address"}],"name":"GaugeCreated","type":"event"},{"inputs":[{"internalType":"address","name":"pool","type":"address"},{"internalType":"uint256","name":"relativeWeightCap","type":"uint256"}],"name":"create","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getGaugeImplementation","outputs":[{"internalType":"contract ILiquidityGauge","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"gauge","type":"address"}],"name":"isGaugeFromFactory","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"}]

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

000000000000000000000000e5f96070ca00cd54795416b1a4b4c2403231c548

-----Decoded View---------------
Arg [0] : gauge (address): 0xe5F96070CA00cd54795416B1a4b4c2403231c548

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000e5f96070ca00cd54795416b1a4b4c2403231c548