Token

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• 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 "./BaseWeightedPool.sol";
import "./WeightedPoolProtocolFees.sol";

/**
 * @dev Basic Weighted Pool with immutable weights.
 */
contract WeightedPool is BaseWeightedPool, WeightedPoolProtocolFees {
    using FixedPoint for uint256;

    uint256 private constant _MAX_TOKENS = 8;

    uint256 private immutable _totalTokens;

    IERC20 internal immutable _token0;
    IERC20 internal immutable _token1;
    IERC20 internal immutable _token2;
    IERC20 internal immutable _token3;
    IERC20 internal immutable _token4;
    IERC20 internal immutable _token5;
    IERC20 internal immutable _token6;
    IERC20 internal immutable _token7;

    // All token balances are normalized to behave as if the token had 18 decimals. We assume a token's decimals will
    // not change throughout its lifetime, and store the corresponding scaling factor for each at construction time.
    // These factors are always greater than or equal to one: tokens with more than 18 decimals are not supported.

    uint256 internal immutable _scalingFactor0;
    uint256 internal immutable _scalingFactor1;
    uint256 internal immutable _scalingFactor2;
    uint256 internal immutable _scalingFactor3;
    uint256 internal immutable _scalingFactor4;
    uint256 internal immutable _scalingFactor5;
    uint256 internal immutable _scalingFactor6;
    uint256 internal immutable _scalingFactor7;

    uint256 internal immutable _normalizedWeight0;
    uint256 internal immutable _normalizedWeight1;
    uint256 internal immutable _normalizedWeight2;
    uint256 internal immutable _normalizedWeight3;
    uint256 internal immutable _normalizedWeight4;
    uint256 internal immutable _normalizedWeight5;
    uint256 internal immutable _normalizedWeight6;
    uint256 internal immutable _normalizedWeight7;

    struct NewPoolParams {
        string name;
        string symbol;
        IERC20[] tokens;
        uint256[] normalizedWeights;
        IRateProvider[] rateProviders;
        address[] assetManagers;
        uint256 swapFeePercentage;
    }

    constructor(
        NewPoolParams memory params,
        IVault vault,
        IProtocolFeePercentagesProvider protocolFeeProvider,
        uint256 pauseWindowDuration,
        uint256 bufferPeriodDuration,
        address owner
    )
        BaseWeightedPool(
            vault,
            params.name,
            params.symbol,
            params.tokens,
            params.assetManagers,
            params.swapFeePercentage,
            pauseWindowDuration,
            bufferPeriodDuration,
            owner,
            false
        )
        ProtocolFeeCache(protocolFeeProvider, ProtocolFeeCache.DELEGATE_PROTOCOL_SWAP_FEES_SENTINEL)
        WeightedPoolProtocolFees(params.tokens.length, params.rateProviders)
    {
        uint256 numTokens = params.tokens.length;
        InputHelpers.ensureInputLengthMatch(numTokens, params.normalizedWeights.length);

        _totalTokens = numTokens;

        // Ensure each normalized weight is above the minimum
        uint256 normalizedSum = 0;
        for (uint8 i = 0; i < numTokens; i++) {
            uint256 normalizedWeight = params.normalizedWeights[i];

            _require(normalizedWeight >= WeightedMath._MIN_WEIGHT, Errors.MIN_WEIGHT);
            normalizedSum = normalizedSum.add(normalizedWeight);
        }
        // Ensure that the normalized weights sum to ONE
        _require(normalizedSum == FixedPoint.ONE, Errors.NORMALIZED_WEIGHT_INVARIANT);

        // Immutable variables cannot be initialized inside an if statement, so we must do conditional assignments
        _token0 = params.tokens[0];
        _token1 = params.tokens[1];
        _token2 = numTokens > 2 ? params.tokens[2] : IERC20(0);
        _token3 = numTokens > 3 ? params.tokens[3] : IERC20(0);
        _token4 = numTokens > 4 ? params.tokens[4] : IERC20(0);
        _token5 = numTokens > 5 ? params.tokens[5] : IERC20(0);
        _token6 = numTokens > 6 ? params.tokens[6] : IERC20(0);
        _token7 = numTokens > 7 ? params.tokens[7] : IERC20(0);

        _scalingFactor0 = _computeScalingFactor(params.tokens[0]);
        _scalingFactor1 = _computeScalingFactor(params.tokens[1]);
        _scalingFactor2 = numTokens > 2 ? _computeScalingFactor(params.tokens[2]) : 0;
        _scalingFactor3 = numTokens > 3 ? _computeScalingFactor(params.tokens[3]) : 0;
        _scalingFactor4 = numTokens > 4 ? _computeScalingFactor(params.tokens[4]) : 0;
        _scalingFactor5 = numTokens > 5 ? _computeScalingFactor(params.tokens[5]) : 0;
        _scalingFactor6 = numTokens > 6 ? _computeScalingFactor(params.tokens[6]) : 0;
        _scalingFactor7 = numTokens > 7 ? _computeScalingFactor(params.tokens[7]) : 0;

        _normalizedWeight0 = params.normalizedWeights[0];
        _normalizedWeight1 = params.normalizedWeights[1];
        _normalizedWeight2 = numTokens > 2 ? params.normalizedWeights[2] : 0;
        _normalizedWeight3 = numTokens > 3 ? params.normalizedWeights[3] : 0;
        _normalizedWeight4 = numTokens > 4 ? params.normalizedWeights[4] : 0;
        _normalizedWeight5 = numTokens > 5 ? params.normalizedWeights[5] : 0;
        _normalizedWeight6 = numTokens > 6 ? params.normalizedWeights[6] : 0;
        _normalizedWeight7 = numTokens > 7 ? params.normalizedWeights[7] : 0;
    }

    function _getNormalizedWeight(IERC20 token) internal view virtual override returns (uint256) {
        // prettier-ignore
        if (token == _token0) { return _normalizedWeight0; }
        else if (token == _token1) { return _normalizedWeight1; }
        else if (token == _token2) { return _normalizedWeight2; }
        else if (token == _token3) { return _normalizedWeight3; }
        else if (token == _token4) { return _normalizedWeight4; }
        else if (token == _token5) { return _normalizedWeight5; }
        else if (token == _token6) { return _normalizedWeight6; }
        else if (token == _token7) { return _normalizedWeight7; }
        else {
            _revert(Errors.INVALID_TOKEN);
        }
    }

    function _getNormalizedWeights() internal view virtual override returns (uint256[] memory) {
        uint256 totalTokens = _getTotalTokens();
        uint256[] memory normalizedWeights = new uint256[](totalTokens);

        // prettier-ignore
        {
            normalizedWeights[0] = _normalizedWeight0;
            normalizedWeights[1] = _normalizedWeight1;
            if (totalTokens > 2) { normalizedWeights[2] = _normalizedWeight2; } else { return normalizedWeights; }
            if (totalTokens > 3) { normalizedWeights[3] = _normalizedWeight3; } else { return normalizedWeights; }
            if (totalTokens > 4) { normalizedWeights[4] = _normalizedWeight4; } else { return normalizedWeights; }
            if (totalTokens > 5) { normalizedWeights[5] = _normalizedWeight5; } else { return normalizedWeights; }
            if (totalTokens > 6) { normalizedWeights[6] = _normalizedWeight6; } else { return normalizedWeights; }
            if (totalTokens > 7) { normalizedWeights[7] = _normalizedWeight7; } else { return normalizedWeights; }
        }

        return normalizedWeights;
    }

    function _getMaxTokens() internal pure virtual override returns (uint256) {
        return _MAX_TOKENS;
    }

    function _getTotalTokens() internal view virtual override returns (uint256) {
        return _totalTokens;
    }

    /**
     * @dev Returns the scaling factor for one of the Pool's tokens. Reverts if `token` is not a token registered by the
     * Pool.
     */
    function _scalingFactor(IERC20 token) internal view virtual override returns (uint256) {
        // prettier-ignore
        if (token == _token0) { return _getScalingFactor0(); }
        else if (token == _token1) { return _getScalingFactor1(); }
        else if (token == _token2) { return _getScalingFactor2(); }
        else if (token == _token3) { return _getScalingFactor3(); }
        else if (token == _token4) { return _getScalingFactor4(); }
        else if (token == _token5) { return _getScalingFactor5(); }
        else if (token == _token6) { return _getScalingFactor6(); }
        else if (token == _token7) { return _getScalingFactor7(); }
        else {
            _revert(Errors.INVALID_TOKEN);
        }
    }

    function _scalingFactors() internal view virtual override returns (uint256[] memory) {
        uint256 totalTokens = _getTotalTokens();
        uint256[] memory scalingFactors = new uint256[](totalTokens);

        // prettier-ignore
        {
            scalingFactors[0] = _getScalingFactor0();
            scalingFactors[1] = _getScalingFactor1();
            if (totalTokens > 2) { scalingFactors[2] = _getScalingFactor2(); } else { return scalingFactors; }
            if (totalTokens > 3) { scalingFactors[3] = _getScalingFactor3(); } else { return scalingFactors; }
            if (totalTokens > 4) { scalingFactors[4] = _getScalingFactor4(); } else { return scalingFactors; }
            if (totalTokens > 5) { scalingFactors[5] = _getScalingFactor5(); } else { return scalingFactors; }
            if (totalTokens > 6) { scalingFactors[6] = _getScalingFactor6(); } else { return scalingFactors; }
            if (totalTokens > 7) { scalingFactors[7] = _getScalingFactor7(); } else { return scalingFactors; }
        }

        return scalingFactors;
    }

    // Initialize

    function _onInitializePool(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory scalingFactors,
        bytes memory userData
    ) internal virtual override returns (uint256, uint256[] memory) {
        // Initialize `_athRateProduct` if the Pool will pay protocol fees on yield.
        // Not initializing this here properly will cause all joins/exits to revert.
        if (!_isExemptFromYieldProtocolFees()) _updateATHRateProduct(_getRateProduct(_getNormalizedWeights()));

        return super._onInitializePool(poolId, sender, recipient, scalingFactors, userData);
    }

    // WeightedPoolProtocolFees functions

    function _beforeJoinExit(uint256[] memory preBalances, uint256[] memory normalizedWeights)
        internal
        virtual
        override
        returns (uint256, uint256)
    {
        uint256 supplyBeforeFeeCollection = totalSupply();
        uint256 invariant = WeightedMath._calculateInvariant(normalizedWeights, preBalances);
        (uint256 protocolFeesToBeMinted, uint256 athRateProduct) = _getPreJoinExitProtocolFees(
            invariant,
            normalizedWeights,
            supplyBeforeFeeCollection
        );

        // We then update the recorded value of `athRateProduct` to ensure we only collect fees on yield once.
        // A zero value for `athRateProduct` represents that it is unchanged so we can skip updating it.
        if (athRateProduct > 0) {
            _updateATHRateProduct(athRateProduct);
        }

        if (protocolFeesToBeMinted > 0) {
            _payProtocolFees(protocolFeesToBeMinted);
        }
        return (supplyBeforeFeeCollection.add(protocolFeesToBeMinted), invariant);
    }

    function _afterJoinExit(
        uint256 preJoinExitInvariant,
        uint256[] memory preBalances,
        uint256[] memory balanceDeltas,
        uint256[] memory normalizedWeights,
        uint256 preJoinExitSupply,
        uint256 postJoinExitSupply
    ) internal virtual override {
        uint256 protocolFeesToBeMinted = _getPostJoinExitProtocolFees(
            preJoinExitInvariant,
            preBalances,
            balanceDeltas,
            normalizedWeights,
            preJoinExitSupply,
            postJoinExitSupply
        );

        if (protocolFeesToBeMinted > 0) {
            _payProtocolFees(protocolFeesToBeMinted);
        }
    }

    function _updatePostJoinExit(uint256 postJoinExitInvariant)
        internal
        virtual
        override(BaseWeightedPool, WeightedPoolProtocolFees)
    {
        WeightedPoolProtocolFees._updatePostJoinExit(postJoinExitInvariant);
    }

    function _beforeProtocolFeeCacheUpdate() internal override {
        // The `getRate()` function depends on the actual supply, which in turn depends on the cached protocol fee
        // percentages. Changing these would therefore result in the rate changing, which is not acceptable as this is a
        // sensitive value.
        // Because of this, we pay any due protocol fees *before* updating the cache, making it so that the new
        // percentages only affect future operation of the Pool, and not past fees. As a result, `getRate()` is
        // unaffected by the cached protocol fee percentages changing.

        // Given that this operation is state-changing and relatively complex, we only allow it as long as the Pool is
        // not paused.
        _ensureNotPaused();

        uint256 invariant = getInvariant();

        (uint256 protocolFeesToBeMinted, uint256 athRateProduct) = _getPreJoinExitProtocolFees(
            invariant,
            _getNormalizedWeights(),
            totalSupply()
        );

        if (protocolFeesToBeMinted > 0) {
            _payProtocolFees(protocolFeesToBeMinted);
        }

        // With the fees paid, we now store the current invariant and update the ATH rate product (if necessary),
        // marking the Pool as free of protocol debt.

        _updatePostJoinExit(invariant);
        if (athRateProduct > 0) {
            _updateATHRateProduct(athRateProduct);
        }
    }

    /**
     * @notice Returns the effective BPT supply.
     *
     * @dev This would be the same as `totalSupply` however the Pool owes debt to the Protocol in the form of unminted
     * BPT, which will be minted immediately before the next join or exit. We need to take these into account since,
     * even if they don't yet exist, they will effectively be included in any Pool operation that involves BPT.
     *
     * In the vast majority of cases, this function should be used instead of `totalSupply()`.
     */
    function getActualSupply() public view returns (uint256) {
        uint256 supply = totalSupply();

        (uint256 protocolFeesToBeMinted, ) = _getPreJoinExitProtocolFees(
            getInvariant(),
            _getNormalizedWeights(),
            supply
        );

        return supply.add(protocolFeesToBeMinted);
    }

    function _onDisableRecoveryMode() internal override {
        // Update the postJoinExitInvariant to the value of the currentInvariant, zeroing out any protocol swap fees.
        _updatePostJoinExit(getInvariant());

        // If the Pool has any protocol yield fees accrued then we update the athRateProduct to zero these out.
        // If the current rate product is less than the athRateProduct then we do not perform this update.
        // This prevents the Pool from paying protocol fees on the same yield twice if the rate product were to drop.
        if (!_isExemptFromYieldProtocolFees()) {
            uint256 athRateProduct = getATHRateProduct();
            uint256 rateProduct = _getRateProduct(_getNormalizedWeights());

            if (rateProduct > athRateProduct) {
                _updateATHRateProduct(rateProduct);
            }
        }
    }

    function _getScalingFactor0() internal view returns (uint256) {
        return _scalingFactor0;
    }

    function _getScalingFactor1() internal view returns (uint256) {
        return _scalingFactor1;
    }

    function _getScalingFactor2() internal view returns (uint256) {
        return _scalingFactor2;
    }

    function _getScalingFactor3() internal view returns (uint256) {
        return _scalingFactor3;
    }

    function _getScalingFactor4() internal view returns (uint256) {
        return _scalingFactor4;
    }

    function _getScalingFactor5() internal view returns (uint256) {
        return _scalingFactor5;
    }

    function _getScalingFactor6() internal view returns (uint256) {
        return _scalingFactor6;
    }

    function _getScalingFactor7() internal view returns (uint256) {
        return _scalingFactor7;
    }
}

// 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/pool-weighted/WeightedPoolUserData.sol";

import "@balancer-labs/v2-solidity-utils/contracts/math/FixedPoint.sol";
import "@balancer-labs/v2-solidity-utils/contracts/helpers/InputHelpers.sol";

import "@balancer-labs/v2-pool-utils/contracts/BaseMinimalSwapInfoPool.sol";

import "./WeightedMath.sol";

/**
 * @dev Base class for WeightedPools containing swap, join and exit logic, but leaving storage and management of
 * the weights to subclasses. Derived contracts can choose to make weights immutable, mutable, or even dynamic
 *  based on local or external logic.
 */
abstract contract BaseWeightedPool is BaseMinimalSwapInfoPool {
    using FixedPoint for uint256;
    using WeightedPoolUserData for bytes;

    constructor(
        IVault vault,
        string memory name,
        string memory symbol,
        IERC20[] memory tokens,
        address[] memory assetManagers,
        uint256 swapFeePercentage,
        uint256 pauseWindowDuration,
        uint256 bufferPeriodDuration,
        address owner,
        bool mutableTokens
    )
        BasePool(
            vault,
            // Given BaseMinimalSwapInfoPool supports both of these specializations, and this Pool never registers
            // or deregisters any tokens after construction, picking Two Token when the Pool only has two tokens is free
            // gas savings.
            // If the pool is expected to be able register new tokens in future, we must choose MINIMAL_SWAP_INFO
            // as clearly the TWO_TOKEN specification doesn't support adding extra tokens in future.
            tokens.length == 2 && !mutableTokens
                ? IVault.PoolSpecialization.TWO_TOKEN
                : IVault.PoolSpecialization.MINIMAL_SWAP_INFO,
            name,
            symbol,
            tokens,
            assetManagers,
            swapFeePercentage,
            pauseWindowDuration,
            bufferPeriodDuration,
            owner
        )
    {
        // solhint-disable-previous-line no-empty-blocks
    }

    // Virtual functions

    /**
     * @dev Returns the normalized weight of `token`. Weights are fixed point numbers that sum to FixedPoint.ONE.
     */
    function _getNormalizedWeight(IERC20 token) internal view virtual returns (uint256);

    /**
     * @dev Returns all normalized weights, in the same order as the Pool's tokens.
     */
    function _getNormalizedWeights() internal view virtual returns (uint256[] memory);

    /**
     * @dev Returns the current value of the invariant.
     */
    function getInvariant() public view returns (uint256) {
        (, uint256[] memory balances, ) = getVault().getPoolTokens(getPoolId());

        // Since the Pool hooks always work with upscaled balances, we manually
        // upscale here for consistency
        _upscaleArray(balances, _scalingFactors());

        uint256[] memory normalizedWeights = _getNormalizedWeights();
        return WeightedMath._calculateInvariant(normalizedWeights, balances);
    }

    function getNormalizedWeights() external view returns (uint256[] memory) {
        return _getNormalizedWeights();
    }

    // Base Pool handlers

    // Swap

    function _onSwapGivenIn(
        SwapRequest memory swapRequest,
        uint256 currentBalanceTokenIn,
        uint256 currentBalanceTokenOut
    ) internal virtual override returns (uint256) {
        return
            WeightedMath._calcOutGivenIn(
                currentBalanceTokenIn,
                _getNormalizedWeight(swapRequest.tokenIn),
                currentBalanceTokenOut,
                _getNormalizedWeight(swapRequest.tokenOut),
                swapRequest.amount
            );
    }

    function _onSwapGivenOut(
        SwapRequest memory swapRequest,
        uint256 currentBalanceTokenIn,
        uint256 currentBalanceTokenOut
    ) internal virtual override returns (uint256) {
        return
            WeightedMath._calcInGivenOut(
                currentBalanceTokenIn,
                _getNormalizedWeight(swapRequest.tokenIn),
                currentBalanceTokenOut,
                _getNormalizedWeight(swapRequest.tokenOut),
                swapRequest.amount
            );
    }

    /**
     * @dev Called before any join or exit operation. Returns the Pool's total supply by default, but derived contracts
     * may choose to add custom behavior at these steps. This often has to do with protocol fee processing.
     */
    function _beforeJoinExit(uint256[] memory preBalances, uint256[] memory normalizedWeights)
        internal
        virtual
        returns (uint256, uint256)
    {
        return (totalSupply(), WeightedMath._calculateInvariant(normalizedWeights, preBalances));
    }

    /**
     * @dev Called after any regular join or exit operation. Empty by default, but derived contracts
     * may choose to add custom behavior at these steps. This often has to do with protocol fee processing.
     *
     * If performing a join operation, balanceDeltas are the amounts in: otherwise they are the amounts out.
     *
     * This function is free to mutate the `preBalances` array.
     */
    function _afterJoinExit(
        uint256 preJoinExitInvariant,
        uint256[] memory preBalances,
        uint256[] memory balanceDeltas,
        uint256[] memory normalizedWeights,
        uint256 preJoinExitSupply,
        uint256 postJoinExitSupply
    ) internal virtual {
        // solhint-disable-previous-line no-empty-blocks
    }

    // Derived contracts may call this to update state after a join or exit.
    function _updatePostJoinExit(uint256 postJoinExitInvariant) internal virtual {
        // solhint-disable-previous-line no-empty-blocks
    }

    // Initialize

    function _onInitializePool(
        bytes32,
        address,
        address,
        uint256[] memory scalingFactors,
        bytes memory userData
    ) internal virtual override returns (uint256, uint256[] memory) {
        WeightedPoolUserData.JoinKind kind = userData.joinKind();
        _require(kind == WeightedPoolUserData.JoinKind.INIT, Errors.UNINITIALIZED);

        uint256[] memory amountsIn = userData.initialAmountsIn();
        InputHelpers.ensureInputLengthMatch(amountsIn.length, scalingFactors.length);
        _upscaleArray(amountsIn, scalingFactors);

        uint256[] memory normalizedWeights = _getNormalizedWeights();
        uint256 invariantAfterJoin = WeightedMath._calculateInvariant(normalizedWeights, amountsIn);

        // Set the initial BPT to the value of the invariant times the number of tokens. This makes BPT supply more
        // consistent in Pools with similar compositions but different number of tokens.
        uint256 bptAmountOut = Math.mul(invariantAfterJoin, amountsIn.length);

        // Initialization is still a join, so we need to do post-join work. Since we are not paying protocol fees,
        // and all we need to do is update the invariant, call `_updatePostJoinExit` here instead of `_afterJoinExit`.
        _updatePostJoinExit(invariantAfterJoin);

        return (bptAmountOut, amountsIn);
    }

    // Join

    function _onJoinPool(
        bytes32,
        address sender,
        address,
        uint256[] memory balances,
        uint256,
        uint256,
        uint256[] memory scalingFactors,
        bytes memory userData
    ) internal virtual override returns (uint256, uint256[] memory) {
        uint256[] memory normalizedWeights = _getNormalizedWeights();

        (uint256 preJoinExitSupply, uint256 preJoinExitInvariant) = _beforeJoinExit(balances, normalizedWeights);

        (uint256 bptAmountOut, uint256[] memory amountsIn) = _doJoin(
            sender,
            balances,
            normalizedWeights,
            scalingFactors,
            preJoinExitSupply,
            userData
        );

        _afterJoinExit(
            preJoinExitInvariant,
            balances,
            amountsIn,
            normalizedWeights,
            preJoinExitSupply,
            preJoinExitSupply.add(bptAmountOut)
        );

        return (bptAmountOut, amountsIn);
    }

    /**
     * @dev Dispatch code which decodes the provided userdata to perform the specified join type.
     * Inheriting contracts may override this function to add additional join types or extra conditions to allow
     * or disallow joins under certain circumstances.
     */
    function _doJoin(
        address,
        uint256[] memory balances,
        uint256[] memory normalizedWeights,
        uint256[] memory scalingFactors,
        uint256 totalSupply,
        bytes memory userData
    ) internal view virtual returns (uint256, uint256[] memory) {
        WeightedPoolUserData.JoinKind kind = userData.joinKind();

        if (kind == WeightedPoolUserData.JoinKind.EXACT_TOKENS_IN_FOR_BPT_OUT) {
            return _joinExactTokensInForBPTOut(balances, normalizedWeights, scalingFactors, totalSupply, userData);
        } else if (kind == WeightedPoolUserData.JoinKind.TOKEN_IN_FOR_EXACT_BPT_OUT) {
            return _joinTokenInForExactBPTOut(balances, normalizedWeights, totalSupply, userData);
        } else if (kind == WeightedPoolUserData.JoinKind.ALL_TOKENS_IN_FOR_EXACT_BPT_OUT) {
            return _joinAllTokensInForExactBPTOut(balances, totalSupply, userData);
        } else {
            _revert(Errors.UNHANDLED_JOIN_KIND);
        }
    }

    function _joinExactTokensInForBPTOut(
        uint256[] memory balances,
        uint256[] memory normalizedWeights,
        uint256[] memory scalingFactors,
        uint256 totalSupply,
        bytes memory userData
    ) private view returns (uint256, uint256[] memory) {
        (uint256[] memory amountsIn, uint256 minBPTAmountOut) = userData.exactTokensInForBptOut();
        InputHelpers.ensureInputLengthMatch(balances.length, amountsIn.length);

        _upscaleArray(amountsIn, scalingFactors);

        uint256 bptAmountOut = WeightedMath._calcBptOutGivenExactTokensIn(
            balances,
            normalizedWeights,
            amountsIn,
            totalSupply,
            getSwapFeePercentage()
        );

        _require(bptAmountOut >= minBPTAmountOut, Errors.BPT_OUT_MIN_AMOUNT);

        return (bptAmountOut, amountsIn);
    }

    function _joinTokenInForExactBPTOut(
        uint256[] memory balances,
        uint256[] memory normalizedWeights,
        uint256 totalSupply,
        bytes memory userData
    ) private view returns (uint256, uint256[] memory) {
        (uint256 bptAmountOut, uint256 tokenIndex) = userData.tokenInForExactBptOut();
        // Note that there is no maximum amountIn parameter: this is handled by `IVault.joinPool`.

        _require(tokenIndex < balances.length, Errors.OUT_OF_BOUNDS);

        uint256 amountIn = WeightedMath._calcTokenInGivenExactBptOut(
            balances[tokenIndex],
            normalizedWeights[tokenIndex],
            bptAmountOut,
            totalSupply,
            getSwapFeePercentage()
        );

        // We join in a single token, so we initialize amountsIn with zeros
        uint256[] memory amountsIn = new uint256[](balances.length);
        // And then assign the result to the selected token
        amountsIn[tokenIndex] = amountIn;

        return (bptAmountOut, amountsIn);
    }

    function _joinAllTokensInForExactBPTOut(
        uint256[] memory balances,
        uint256 totalSupply,
        bytes memory userData
    ) private pure returns (uint256, uint256[] memory) {
        uint256 bptAmountOut = userData.allTokensInForExactBptOut();
        // Note that there is no maximum amountsIn parameter: this is handled by `IVault.joinPool`.

        uint256[] memory amountsIn = WeightedMath._calcAllTokensInGivenExactBptOut(balances, bptAmountOut, totalSupply);

        return (bptAmountOut, amountsIn);
    }

    // Exit

    function _onExitPool(
        bytes32,
        address sender,
        address,
        uint256[] memory balances,
        uint256,
        uint256,
        uint256[] memory scalingFactors,
        bytes memory userData
    ) internal virtual override returns (uint256, uint256[] memory) {
        uint256[] memory normalizedWeights = _getNormalizedWeights();

        (uint256 preJoinExitSupply, uint256 preJoinExitInvariant) = _beforeJoinExit(balances, normalizedWeights);

        (uint256 bptAmountIn, uint256[] memory amountsOut) = _doExit(
            sender,
            balances,
            normalizedWeights,
            scalingFactors,
            preJoinExitSupply,
            userData
        );

        _afterJoinExit(
            preJoinExitInvariant,
            balances,
            amountsOut,
            normalizedWeights,
            preJoinExitSupply,
            preJoinExitSupply.sub(bptAmountIn)
        );

        return (bptAmountIn, amountsOut);
    }

    /**
     * @dev Dispatch code which decodes the provided userdata to perform the specified exit type.
     * Inheriting contracts may override this function to add additional exit types or extra conditions to allow
     * or disallow exit under certain circumstances.
     */
    function _doExit(
        address,
        uint256[] memory balances,
        uint256[] memory normalizedWeights,
        uint256[] memory scalingFactors,
        uint256 totalSupply,
        bytes memory userData
    ) internal view virtual returns (uint256, uint256[] memory) {
        WeightedPoolUserData.ExitKind kind = userData.exitKind();

        if (kind == WeightedPoolUserData.ExitKind.EXACT_BPT_IN_FOR_ONE_TOKEN_OUT) {
            return _exitExactBPTInForTokenOut(balances, normalizedWeights, totalSupply, userData);
        } else if (kind == WeightedPoolUserData.ExitKind.EXACT_BPT_IN_FOR_TOKENS_OUT) {
            return _exitExactBPTInForTokensOut(balances, totalSupply, userData);
        } else if (kind == WeightedPoolUserData.ExitKind.BPT_IN_FOR_EXACT_TOKENS_OUT) {
            return _exitBPTInForExactTokensOut(balances, normalizedWeights, scalingFactors, totalSupply, userData);
        } else {
            _revert(Errors.UNHANDLED_EXIT_KIND);
        }
    }

    function _exitExactBPTInForTokenOut(
        uint256[] memory balances,
        uint256[] memory normalizedWeights,
        uint256 totalSupply,
        bytes memory userData
    ) private view returns (uint256, uint256[] memory) {
        (uint256 bptAmountIn, uint256 tokenIndex) = userData.exactBptInForTokenOut();
        // Note that there is no minimum amountOut parameter: this is handled by `IVault.exitPool`.

        _require(tokenIndex < balances.length, Errors.OUT_OF_BOUNDS);

        uint256 amountOut = WeightedMath._calcTokenOutGivenExactBptIn(
            balances[tokenIndex],
            normalizedWeights[tokenIndex],
            bptAmountIn,
            totalSupply,
            getSwapFeePercentage()
        );

        // This is an exceptional situation in which the fee is charged on a token out instead of a token in.
        // We exit in a single token, so we initialize amountsOut with zeros
        uint256[] memory amountsOut = new uint256[](balances.length);
        // And then assign the result to the selected token
        amountsOut[tokenIndex] = amountOut;

        return (bptAmountIn, amountsOut);
    }

    function _exitExactBPTInForTokensOut(
        uint256[] memory balances,
        uint256 totalSupply,
        bytes memory userData
    ) private pure returns (uint256, uint256[] memory) {
        uint256 bptAmountIn = userData.exactBptInForTokensOut();
        // Note that there is no minimum amountOut parameter: this is handled by `IVault.exitPool`.

        uint256[] memory amountsOut = WeightedMath._calcTokensOutGivenExactBptIn(balances, bptAmountIn, totalSupply);
        return (bptAmountIn, amountsOut);
    }

    function _exitBPTInForExactTokensOut(
        uint256[] memory balances,
        uint256[] memory normalizedWeights,
        uint256[] memory scalingFactors,
        uint256 totalSupply,
        bytes memory userData
    ) private view returns (uint256, uint256[] memory) {
        (uint256[] memory amountsOut, uint256 maxBPTAmountIn) = userData.bptInForExactTokensOut();
        InputHelpers.ensureInputLengthMatch(amountsOut.length, balances.length);
        _upscaleArray(amountsOut, scalingFactors);

        // This is an exceptional situation in which the fee is charged on a token out instead of a token in.
        uint256 bptAmountIn = WeightedMath._calcBptInGivenExactTokensOut(
            balances,
            normalizedWeights,
            amountsOut,
            totalSupply,
            getSwapFeePercentage()
        );
        _require(bptAmountIn <= maxBPTAmountIn, Errors.BPT_IN_MAX_AMOUNT);

        return (bptAmountIn, amountsOut);
    }
}

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

library WeightedPoolUserData {
    // In order to preserve backwards compatibility, make sure new join and exit kinds are added at the end of the enum.
    enum JoinKind {
        INIT,
        EXACT_TOKENS_IN_FOR_BPT_OUT,
        TOKEN_IN_FOR_EXACT_BPT_OUT,
        ALL_TOKENS_IN_FOR_EXACT_BPT_OUT,
        ADD_TOKEN // for Managed Pool
    }
    enum ExitKind {
        EXACT_BPT_IN_FOR_ONE_TOKEN_OUT,
        EXACT_BPT_IN_FOR_TOKENS_OUT,
        BPT_IN_FOR_EXACT_TOKENS_OUT,
        REMOVE_TOKEN // for ManagedPool
    }

    function joinKind(bytes memory self) internal pure returns (JoinKind) {
        return abi.decode(self, (JoinKind));
    }

    function exitKind(bytes memory self) internal pure returns (ExitKind) {
        return abi.decode(self, (ExitKind));
    }

    // Joins

    function initialAmountsIn(bytes memory self) internal pure returns (uint256[] memory amountsIn) {
        (, amountsIn) = abi.decode(self, (JoinKind, uint256[]));
    }

    function exactTokensInForBptOut(bytes memory self)
        internal
        pure
        returns (uint256[] memory amountsIn, uint256 minBPTAmountOut)
    {
        (, amountsIn, minBPTAmountOut) = abi.decode(self, (JoinKind, uint256[], uint256));
    }

    function tokenInForExactBptOut(bytes memory self) internal pure returns (uint256 bptAmountOut, uint256 tokenIndex) {
        (, bptAmountOut, tokenIndex) = abi.decode(self, (JoinKind, uint256, uint256));
    }

    function allTokensInForExactBptOut(bytes memory self) internal pure returns (uint256 bptAmountOut) {
        (, bptAmountOut) = abi.decode(self, (JoinKind, uint256));
    }

    function addToken(bytes memory self) internal pure returns (uint256 amountIn) {
        (, amountIn) = abi.decode(self, (JoinKind, uint256));
    }

    // Exits

    function exactBptInForTokenOut(bytes memory self) internal pure returns (uint256 bptAmountIn, uint256 tokenIndex) {
        (, bptAmountIn, tokenIndex) = abi.decode(self, (ExitKind, uint256, uint256));
    }

    function exactBptInForTokensOut(bytes memory self) internal pure returns (uint256 bptAmountIn) {
        (, bptAmountIn) = abi.decode(self, (ExitKind, uint256));
    }

    function bptInForExactTokensOut(bytes memory self)
        internal
        pure
        returns (uint256[] memory amountsOut, uint256 maxBPTAmountIn)
    {
        (, amountsOut, maxBPTAmountIn) = abi.decode(self, (ExitKind, uint256[], uint256));
    }

    // Managed Pool
    function removeToken(bytes memory self) internal pure returns (uint256 tokenIndex) {
        (, tokenIndex) = abi.decode(self, (ExitKind, 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;

import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/BalancerErrors.sol";

import "./LogExpMath.sol";

/* solhint-disable private-vars-leading-underscore */

library FixedPoint {
    uint256 internal constant ONE = 1e18; // 18 decimal places
    uint256 internal constant TWO = 2 * ONE;
    uint256 internal constant FOUR = 4 * ONE;
    uint256 internal constant MAX_POW_RELATIVE_ERROR = 10000; // 10^(-14)

    // Minimum base for the power function when the exponent is 'free' (larger than ONE).
    uint256 internal constant MIN_POW_BASE_FREE_EXPONENT = 0.7e18;

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        // Fixed Point addition is the same as regular checked addition

        uint256 c = a + b;
        _require(c >= a, Errors.ADD_OVERFLOW);
        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        // Fixed Point addition is the same as regular checked addition

        _require(b <= a, Errors.SUB_OVERFLOW);
        uint256 c = a - b;
        return c;
    }

    function mulDown(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 product = a * b;
        _require(a == 0 || product / a == b, Errors.MUL_OVERFLOW);

        return product / ONE;
    }

    function mulUp(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 product = a * b;
        _require(a == 0 || product / a == b, Errors.MUL_OVERFLOW);

        if (product == 0) {
            return 0;
        } else {
            // The traditional divUp formula is:
            // divUp(x, y) := (x + y - 1) / y
            // To avoid intermediate overflow in the addition, we distribute the division and get:
            // divUp(x, y) := (x - 1) / y + 1
            // Note that this requires x != 0, which we already tested for.

            return ((product - 1) / ONE) + 1;
        }
    }

    function divDown(uint256 a, uint256 b) internal pure returns (uint256) {
        _require(b != 0, Errors.ZERO_DIVISION);

        if (a == 0) {
            return 0;
        } else {
            uint256 aInflated = a * ONE;
            _require(aInflated / a == ONE, Errors.DIV_INTERNAL); // mul overflow

            return aInflated / b;
        }
    }

    function divUp(uint256 a, uint256 b) internal pure returns (uint256) {
        _require(b != 0, Errors.ZERO_DIVISION);

        if (a == 0) {
            return 0;
        } else {
            uint256 aInflated = a * ONE;
            _require(aInflated / a == ONE, Errors.DIV_INTERNAL); // mul overflow

            // The traditional divUp formula is:
            // divUp(x, y) := (x + y - 1) / y
            // To avoid intermediate overflow in the addition, we distribute the division and get:
            // divUp(x, y) := (x - 1) / y + 1
            // Note that this requires x != 0, which we already tested for.

            return ((aInflated - 1) / b) + 1;
        }
    }

    /**
     * @dev Returns x^y, assuming both are fixed point numbers, rounding down. The result is guaranteed to not be above
     * the true value (that is, the error function expected - actual is always positive).
     */
    function powDown(uint256 x, uint256 y) internal pure returns (uint256) {
        // Optimize for when y equals 1.0, 2.0 or 4.0, as those are very simple to implement and occur often in 50/50
        // and 80/20 Weighted Pools
        if (y == ONE) {
            return x;
        } else if (y == TWO) {
            return mulDown(x, x);
        } else if (y == FOUR) {
            uint256 square = mulDown(x, x);
            return mulDown(square, square);
        } else {
            uint256 raw = LogExpMath.pow(x, y);
            uint256 maxError = add(mulUp(raw, MAX_POW_RELATIVE_ERROR), 1);

            if (raw < maxError) {
                return 0;
            } else {
                return sub(raw, maxError);
            }
        }
    }

    /**
     * @dev Returns x^y, assuming both are fixed point numbers, rounding up. The result is guaranteed to not be below
     * the true value (that is, the error function expected - actual is always negative).
     */
    function powUp(uint256 x, uint256 y) internal pure returns (uint256) {
        // Optimize for when y equals 1.0, 2.0 or 4.0, as those are very simple to implement and occur often in 50/50
        // and 80/20 Weighted Pools
        if (y == ONE) {
            return x;
        } else if (y == TWO) {
            return mulUp(x, x);
        } else if (y == FOUR) {
            uint256 square = mulUp(x, x);
            return mulUp(square, square);
        } else {
            uint256 raw = LogExpMath.pow(x, y);
            uint256 maxError = add(mulUp(raw, MAX_POW_RELATIVE_ERROR), 1);

            return add(raw, maxError);
        }
    }

    /**
     * @dev Returns the complement of a value (1 - x), capped to 0 if x is larger than 1.
     *
     * Useful when computing the complement for values with some level of relative error, as it strips this error and
     * prevents intermediate negative values.
     */
    function complement(uint256 x) internal pure returns (uint256) {
        return (x < ONE) ? (ONE - x) : 0;
    }
}

// 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/solidity-utils/openzeppelin/IERC20.sol";
import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/BalancerErrors.sol";

library InputHelpers {
    function ensureInputLengthMatch(uint256 a, uint256 b) internal pure {
        _require(a == b, Errors.INPUT_LENGTH_MISMATCH);
    }

    function ensureInputLengthMatch(
        uint256 a,
        uint256 b,
        uint256 c
    ) internal pure {
        _require(a == b && b == c, Errors.INPUT_LENGTH_MISMATCH);
    }

    function ensureArrayIsSorted(IERC20[] memory array) internal pure {
        address[] memory addressArray;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            addressArray := array
        }
        ensureArrayIsSorted(addressArray);
    }

    function ensureArrayIsSorted(address[] memory array) internal pure {
        if (array.length < 2) {
            return;
        }

        address previous = array[0];
        for (uint256 i = 1; i < array.length; ++i) {
            address current = array[i];
            _require(previous < current, Errors.UNSORTED_ARRAY);
            previous = current;
        }
    }
}

// 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/vault/IMinimalSwapInfoPool.sol";

import "./BasePool.sol";

/**
 * @dev Extension of `BasePool`, adding a handler for `IMinimalSwapInfoPool.onSwap`.
 *
 * Derived contracts must call `BasePool`'s constructor, and implement `_onSwapGivenIn` and `_onSwapGivenOut` along with
 * `BasePool`'s virtual functions. Inheriting from this contract lets derived contracts choose the Two Token or Minimal
 * Swap Info specialization settings.
 */
abstract contract BaseMinimalSwapInfoPool is IMinimalSwapInfoPool, BasePool {
    // Swap Hooks

    function onSwap(
        SwapRequest memory request,
        uint256 balanceTokenIn,
        uint256 balanceTokenOut
    ) public override onlyVault(request.poolId) returns (uint256) {
        _beforeSwapJoinExit();

        uint256 scalingFactorTokenIn = _scalingFactor(request.tokenIn);
        uint256 scalingFactorTokenOut = _scalingFactor(request.tokenOut);

        balanceTokenIn = _upscale(balanceTokenIn, scalingFactorTokenIn);
        balanceTokenOut = _upscale(balanceTokenOut, scalingFactorTokenOut);

        if (request.kind == IVault.SwapKind.GIVEN_IN) {
            // Fees are subtracted before scaling, to reduce the complexity of the rounding direction analysis.
            request.amount = _subtractSwapFeeAmount(request.amount);

            // All token amounts are upscaled.
            request.amount = _upscale(request.amount, scalingFactorTokenIn);

            uint256 amountOut = _onSwapGivenIn(request, balanceTokenIn, balanceTokenOut);

            // amountOut tokens are exiting the Pool, so we round down.
            return _downscaleDown(amountOut, scalingFactorTokenOut);
        } else {
            // All token amounts are upscaled.
            request.amount = _upscale(request.amount, scalingFactorTokenOut);

            uint256 amountIn = _onSwapGivenOut(request, balanceTokenIn, balanceTokenOut);

            // amountIn tokens are entering the Pool, so we round up.
            amountIn = _downscaleUp(amountIn, scalingFactorTokenIn);

            // Fees are added after scaling happens, to reduce the complexity of the rounding direction analysis.
            return _addSwapFeeAmount(amountIn);
        }
    }

    /*
     * @dev Called when a swap with the Pool occurs, where the amount of tokens entering the Pool is known.
     *
     * Returns the amount of tokens that will be taken from the Pool in return.
     *
     * All amounts inside `swapRequest`, `balanceTokenIn`, and `balanceTokenOut` are upscaled. The swap fee has already
     * been deducted from `swapRequest.amount`.
     *
     * The return value is also considered upscaled, and will be downscaled (rounding down) before returning it to the
     * Vault.
     */
    function _onSwapGivenIn(
        SwapRequest memory swapRequest,
        uint256 balanceTokenIn,
        uint256 balanceTokenOut
    ) internal virtual returns (uint256);

    /*
     * @dev Called when a swap with the Pool occurs, where the amount of tokens exiting the Pool is known.
     *
     * Returns the amount of tokens that will be granted to the Pool in return.
     *
     * All amounts inside `swapRequest`, `balanceTokenIn`, and `balanceTokenOut` are upscaled.
     *
     * The return value is also considered upscaled, and will be downscaled (rounding up) before applying the swap fee
     * and returning it to the Vault.
     */
    function _onSwapGivenOut(
        SwapRequest memory swapRequest,
        uint256 balanceTokenIn,
        uint256 balanceTokenOut
    ) internal virtual 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;

import "@balancer-labs/v2-solidity-utils/contracts/helpers/InputHelpers.sol";
import "@balancer-labs/v2-solidity-utils/contracts/math/FixedPoint.sol";
import "@balancer-labs/v2-solidity-utils/contracts/math/Math.sol";

// These functions start with an underscore, as if they were part of a contract and not a library. At some point this
// should be fixed.
// solhint-disable private-vars-leading-underscore

library WeightedMath {
    using FixedPoint for uint256;
    // A minimum normalized weight imposes a maximum weight ratio. We need this due to limitations in the
    // implementation of the power function, as these ratios are often exponents.
    uint256 internal constant _MIN_WEIGHT = 0.01e18;
    // Having a minimum normalized weight imposes a limit on the maximum number of tokens;
    // i.e., the largest possible pool is one where all tokens have exactly the minimum weight.
    uint256 internal constant _MAX_WEIGHTED_TOKENS = 100;

    // Pool limits that arise from limitations in the fixed point power function (and the imposed 1:100 maximum weight
    // ratio).

    // Swap limits: amounts swapped may not be larger than this percentage of total balance.
    uint256 internal constant _MAX_IN_RATIO = 0.3e18;
    uint256 internal constant _MAX_OUT_RATIO = 0.3e18;

    // Invariant growth limit: non-proportional joins cannot cause the invariant to increase by more than this ratio.
    uint256 internal constant _MAX_INVARIANT_RATIO = 3e18;
    // Invariant shrink limit: non-proportional exits cannot cause the invariant to decrease by less than this ratio.
    uint256 internal constant _MIN_INVARIANT_RATIO = 0.7e18;

    // About swap fees on joins and exits:
    // Any join or exit that is not perfectly balanced (e.g. all single token joins or exits) is mathematically
    // equivalent to a perfectly balanced join or exit followed by a series of swaps. Since these swaps would charge
    // swap fees, it follows that (some) joins and exits should as well.
    // On these operations, we split the token amounts in 'taxable' and 'non-taxable' portions, where the 'taxable' part
    // is the one to which swap fees are applied.

    // Invariant is used to collect protocol swap fees by comparing its value between two times.
    // So we can round always to the same direction. It is also used to initiate the BPT amount
    // and, because there is a minimum BPT, we round down the invariant.
    function _calculateInvariant(uint256[] memory normalizedWeights, uint256[] memory balances)
        internal
        pure
        returns (uint256 invariant)
    {
        /**********************************************************************************************
        // invariant               _____                                                             //
        // wi = weight index i      | |      wi                                                      //
        // bi = balance index i     | |  bi ^   = i                                                  //
        // i = invariant                                                                             //
        **********************************************************************************************/

        invariant = FixedPoint.ONE;
        for (uint256 i = 0; i < normalizedWeights.length; i++) {
            invariant = invariant.mulDown(balances[i].powDown(normalizedWeights[i]));
        }

        _require(invariant > 0, Errors.ZERO_INVARIANT);
    }

    // Computes how many tokens can be taken out of a pool if `amountIn` are sent, given the
    // current balances and weights.
    function _calcOutGivenIn(
        uint256 balanceIn,
        uint256 weightIn,
        uint256 balanceOut,
        uint256 weightOut,
        uint256 amountIn
    ) internal pure returns (uint256) {
        /**********************************************************************************************
        // outGivenIn                                                                                //
        // aO = amountOut                                                                            //
        // bO = balanceOut                                                                           //
        // bI = balanceIn              /      /            bI             \    (wI / wO) \           //
        // aI = amountIn    aO = bO * |  1 - | --------------------------  | ^            |          //
        // wI = weightIn               \      \       ( bI + aI )         /              /           //
        // wO = weightOut                                                                            //
        **********************************************************************************************/

        // Amount out, so we round down overall.

        // The multiplication rounds down, and the subtrahend (power) rounds up (so the base rounds up too).
        // Because bI / (bI + aI) <= 1, the exponent rounds down.

        // Cannot exceed maximum in ratio
        _require(amountIn <= balanceIn.mulDown(_MAX_IN_RATIO), Errors.MAX_IN_RATIO);

        uint256 denominator = balanceIn.add(amountIn);
        uint256 base = balanceIn.divUp(denominator);
        uint256 exponent = weightIn.divDown(weightOut);
        uint256 power = base.powUp(exponent);

        return balanceOut.mulDown(power.complement());
    }

    // Computes how many tokens must be sent to a pool in order to take `amountOut`, given the
    // current balances and weights.
    function _calcInGivenOut(
        uint256 balanceIn,
        uint256 weightIn,
        uint256 balanceOut,
        uint256 weightOut,
        uint256 amountOut
    ) internal pure returns (uint256) {
        /**********************************************************************************************
        // inGivenOut                                                                                //
        // aO = amountOut                                                                            //
        // bO = balanceOut                                                                           //
        // bI = balanceIn              /  /            bO             \    (wO / wI)      \          //
        // aI = amountIn    aI = bI * |  | --------------------------  | ^            - 1  |         //
        // wI = weightIn               \  \       ( bO - aO )         /                   /          //
        // wO = weightOut                                                                            //
        **********************************************************************************************/

        // Amount in, so we round up overall.

        // The multiplication rounds up, and the power rounds up (so the base rounds up too).
        // Because b0 / (b0 - a0) >= 1, the exponent rounds up.

        // Cannot exceed maximum out ratio
        _require(amountOut <= balanceOut.mulDown(_MAX_OUT_RATIO), Errors.MAX_OUT_RATIO);

        uint256 base = balanceOut.divUp(balanceOut.sub(amountOut));
        uint256 exponent = weightOut.divUp(weightIn);
        uint256 power = base.powUp(exponent);

        // Because the base is larger than one (and the power rounds up), the power should always be larger than one, so
        // the following subtraction should never revert.
        uint256 ratio = power.sub(FixedPoint.ONE);

        return balanceIn.mulUp(ratio);
    }

    function _calcBptOutGivenExactTokensIn(
        uint256[] memory balances,
        uint256[] memory normalizedWeights,
        uint256[] memory amountsIn,
        uint256 bptTotalSupply,
        uint256 swapFeePercentage
    ) internal pure returns (uint256) {
        // BPT out, so we round down overall.

        uint256[] memory balanceRatiosWithFee = new uint256[](amountsIn.length);

        uint256 invariantRatioWithFees = 0;
        for (uint256 i = 0; i < balances.length; i++) {
            balanceRatiosWithFee[i] = balances[i].add(amountsIn[i]).divDown(balances[i]);
            invariantRatioWithFees = invariantRatioWithFees.add(balanceRatiosWithFee[i].mulDown(normalizedWeights[i]));
        }

        uint256 invariantRatio = _computeJoinExactTokensInInvariantRatio(
            balances,
            normalizedWeights,
            amountsIn,
            balanceRatiosWithFee,
            invariantRatioWithFees,
            swapFeePercentage
        );

        uint256 bptOut = (invariantRatio > FixedPoint.ONE)
            ? bptTotalSupply.mulDown(invariantRatio.sub(FixedPoint.ONE))
            : 0;
        return bptOut;
    }

    /**
     * @dev Intermediate function to avoid stack-too-deep errors.
     */
    function _computeJoinExactTokensInInvariantRatio(
        uint256[] memory balances,
        uint256[] memory normalizedWeights,
        uint256[] memory amountsIn,
        uint256[] memory balanceRatiosWithFee,
        uint256 invariantRatioWithFees,
        uint256 swapFeePercentage
    ) private pure returns (uint256 invariantRatio) {
        // Swap fees are charged on all tokens that are being added in a larger proportion than the overall invariant
        // increase.
        invariantRatio = FixedPoint.ONE;

        for (uint256 i = 0; i < balances.length; i++) {
            uint256 amountInWithoutFee;

            if (balanceRatiosWithFee[i] > invariantRatioWithFees) {
                uint256 nonTaxableAmount = balances[i].mulDown(invariantRatioWithFees.sub(FixedPoint.ONE));
                uint256 taxableAmount = amountsIn[i].sub(nonTaxableAmount);
                uint256 swapFee = taxableAmount.mulUp(swapFeePercentage);

                amountInWithoutFee = nonTaxableAmount.add(taxableAmount.sub(swapFee));
            } else {
                amountInWithoutFee = amountsIn[i];
            }

            uint256 balanceRatio = balances[i].add(amountInWithoutFee).divDown(balances[i]);

            invariantRatio = invariantRatio.mulDown(balanceRatio.powDown(normalizedWeights[i]));
        }
    }

    function _calcTokenInGivenExactBptOut(
        uint256 balance,
        uint256 normalizedWeight,
        uint256 bptAmountOut,
        uint256 bptTotalSupply,
        uint256 swapFeePercentage
    ) internal pure returns (uint256) {
        /******************************************************************************************
        // tokenInForExactBPTOut                                                                 //
        // a = amountIn                                                                          //
        // b = balance                      /  /    totalBPT + bptOut      \    (1 / w)       \  //
        // bptOut = bptAmountOut   a = b * |  | --------------------------  | ^          - 1  |  //
        // bpt = totalBPT                   \  \       totalBPT            /                  /  //
        // w = weight                                                                            //
        ******************************************************************************************/

        // Token in, so we round up overall.

        // Calculate the factor by which the invariant will increase after minting BPTAmountOut
        uint256 invariantRatio = bptTotalSupply.add(bptAmountOut).divUp(bptTotalSupply);
        _require(invariantRatio <= _MAX_INVARIANT_RATIO, Errors.MAX_OUT_BPT_FOR_TOKEN_IN);

        // Calculate by how much the token balance has to increase to match the invariantRatio
        uint256 balanceRatio = invariantRatio.powUp(FixedPoint.ONE.divUp(normalizedWeight));

        uint256 amountInWithoutFee = balance.mulUp(balanceRatio.sub(FixedPoint.ONE));

        // We can now compute how much extra balance is being deposited and used in virtual swaps, and charge swap fees
        // accordingly.
        uint256 taxableAmount = amountInWithoutFee.mulUp(normalizedWeight.complement());
        uint256 nonTaxableAmount = amountInWithoutFee.sub(taxableAmount);

        uint256 taxableAmountPlusFees = taxableAmount.divUp(swapFeePercentage.complement());

        return nonTaxableAmount.add(taxableAmountPlusFees);
    }

    function _calcAllTokensInGivenExactBptOut(
        uint256[] memory balances,
        uint256 bptAmountOut,
        uint256 totalBPT
    ) internal pure returns (uint256[] memory) {
        /************************************************************************************
        // tokensInForExactBptOut                                                          //
        // (per token)                                                                     //
        // aI = amountIn                   /   bptOut   \                                  //
        // b = balance           aI = b * | ------------ |                                 //
        // bptOut = bptAmountOut           \  totalBPT  /                                  //
        // bpt = totalBPT                                                                  //
        ************************************************************************************/

        // Tokens in, so we round up overall.
        uint256 bptRatio = bptAmountOut.divUp(totalBPT);

        uint256[] memory amountsIn = new uint256[](balances.length);
        for (uint256 i = 0; i < balances.length; i++) {
            amountsIn[i] = balances[i].mulUp(bptRatio);
        }

        return amountsIn;
    }

    function _calcBptInGivenExactTokensOut(
        uint256[] memory balances,
        uint256[] memory normalizedWeights,
        uint256[] memory amountsOut,
        uint256 bptTotalSupply,
        uint256 swapFeePercentage
    ) internal pure returns (uint256) {
        // BPT in, so we round up overall.

        uint256[] memory balanceRatiosWithoutFee = new uint256[](amountsOut.length);
        uint256 invariantRatioWithoutFees = 0;
        for (uint256 i = 0; i < balances.length; i++) {
            balanceRatiosWithoutFee[i] = balances[i].sub(amountsOut[i]).divUp(balances[i]);
            invariantRatioWithoutFees = invariantRatioWithoutFees.add(
                balanceRatiosWithoutFee[i].mulUp(normalizedWeights[i])
            );
        }

        uint256 invariantRatio = _computeExitExactTokensOutInvariantRatio(
            balances,
            normalizedWeights,
            amountsOut,
            balanceRatiosWithoutFee,
            invariantRatioWithoutFees,
            swapFeePercentage
        );

        return bptTotalSupply.mulUp(invariantRatio.complement());
    }

    /**
     * @dev Intermediate function to avoid stack-too-deep errors.
     */
    function _computeExitExactTokensOutInvariantRatio(
        uint256[] memory balances,
        uint256[] memory normalizedWeights,
        uint256[] memory amountsOut,
        uint256[] memory balanceRatiosWithoutFee,
        uint256 invariantRatioWithoutFees,
        uint256 swapFeePercentage
    ) private pure returns (uint256 invariantRatio) {
        invariantRatio = FixedPoint.ONE;

        for (uint256 i = 0; i < balances.length; i++) {
            // Swap fees are typically charged on 'token in', but there is no 'token in' here, so we apply it to
            // 'token out'. This results in slightly larger price impact.

            uint256 amountOutWithFee;
            if (invariantRatioWithoutFees > balanceRatiosWithoutFee[i]) {
                uint256 nonTaxableAmount = balances[i].mulDown(invariantRatioWithoutFees.complement());
                uint256 taxableAmount = amountsOut[i].sub(nonTaxableAmount);
                uint256 taxableAmountPlusFees = taxableAmount.divUp(swapFeePercentage.complement());

                amountOutWithFee = nonTaxableAmount.add(taxableAmountPlusFees);
            } else {
                amountOutWithFee = amountsOut[i];
            }

            uint256 balanceRatio = balances[i].sub(amountOutWithFee).divDown(balances[i]);

            invariantRatio = invariantRatio.mulDown(balanceRatio.powDown(normalizedWeights[i]));
        }
    }

    function _calcTokenOutGivenExactBptIn(
        uint256 balance,
        uint256 normalizedWeight,
        uint256 bptAmountIn,
        uint256 bptTotalSupply,
        uint256 swapFeePercentage
    ) internal pure returns (uint256) {
        /*****************************************************************************************
        // exactBPTInForTokenOut                                                                //
        // a = amountOut                                                                        //
        // b = balance                     /      /    totalBPT - bptIn       \    (1 / w)  \   //
        // bptIn = bptAmountIn    a = b * |  1 - | --------------------------  | ^           |  //
        // bpt = totalBPT                  \      \       totalBPT            /             /   //
        // w = weight                                                                           //
        *****************************************************************************************/

        // Token out, so we round down overall. The multiplication rounds down, but the power rounds up (so the base
        // rounds up). Because (totalBPT - bptIn) / totalBPT <= 1, the exponent rounds down.

        // Calculate the factor by which the invariant will decrease after burning BPTAmountIn
        uint256 invariantRatio = bptTotalSupply.sub(bptAmountIn).divUp(bptTotalSupply);
        _require(invariantRatio >= _MIN_INVARIANT_RATIO, Errors.MIN_BPT_IN_FOR_TOKEN_OUT);

        // Calculate by how much the token balance has to decrease to match invariantRatio
        uint256 balanceRatio = invariantRatio.powUp(FixedPoint.ONE.divDown(normalizedWeight));

        // Because of rounding up, balanceRatio can be greater than one. Using complement prevents reverts.
        uint256 amountOutWithoutFee = balance.mulDown(balanceRatio.complement());

        // We can now compute how much excess balance is being withdrawn as a result of the virtual swaps, which result
        // in swap fees.

        // Swap fees are typically charged on 'token in', but there is no 'token in' here, so we apply it
        // to 'token out'. This results in slightly larger price impact. Fees are rounded up.
        uint256 taxableAmount = amountOutWithoutFee.mulUp(normalizedWeight.complement());
        uint256 nonTaxableAmount = amountOutWithoutFee.sub(taxableAmount);
        uint256 taxableAmountMinusFees = taxableAmount.mulUp(swapFeePercentage.complement());

        return nonTaxableAmount.add(taxableAmountMinusFees);
    }

    function _calcTokensOutGivenExactBptIn(
        uint256[] memory balances,
        uint256 bptAmountIn,
        uint256 totalBPT
    ) internal pure returns (uint256[] memory) {
        /**********************************************************************************************
        // exactBPTInForTokensOut                                                                    //
        // (per token)                                                                               //
        // aO = amountOut                  /        bptIn         \                                  //
        // b = balance           a0 = b * | ---------------------  |                                 //
        // bptIn = bptAmountIn             \       totalBPT       /                                  //
        // bpt = totalBPT                                                                            //
        **********************************************************************************************/

        // Since we're computing an amount out, we round down overall. This means rounding down on both the
        // multiplication and division.

        uint256 bptRatio = bptAmountIn.divDown(totalBPT);

        uint256[] memory amountsOut = new uint256[](balances.length);
        for (uint256 i = 0; i < balances.length; i++) {
            amountsOut[i] = balances[i].mulDown(bptRatio);
        }

        return amountsOut;
    }

    /**
     * @dev Calculate the amount of BPT which should be minted when adding a new token to the Pool.
     *
     * Note that normalizedWeight is set that it corresponds to the desired weight of this token *after* adding it.
     * i.e. For a two token 50:50 pool which we want to turn into a 33:33:33 pool, we use a normalized weight of 33%
     * @param totalSupply - the total supply of the Pool's BPT.
     * @param normalizedWeight - the normalized weight of the token to be added (normalized relative to final weights)
     */
    function _calcBptOutAddToken(uint256 totalSupply, uint256 normalizedWeight) internal pure returns (uint256) {
        // The amount of BPT which is equivalent to the token being added may be calculated by the growth in the
        // sum of the token weights, i.e. if we add a token which will make up 50% of the pool then we should receive
        // 50% of the new supply of BPT.
        //
        // The growth in the total weight of the pool can be easily calculated by:
        //
        // weightSumRatio = totalWeight / (totalWeight - newTokenWeight)
        //
        // As we're working with normalized weights `totalWeight` is equal to 1.

        uint256 weightSumRatio = FixedPoint.ONE.divDown(FixedPoint.ONE.sub(normalizedWeight));

        // The amount of BPT to mint is then simply:
        //
        // toMint = totalSupply * (weightSumRatio - 1)

        return totalSupply.mulDown(weightSumRatio.sub(FixedPoint.ONE));
    }
}

// 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;

// solhint-disable

/**
 * @dev Reverts if `condition` is false, with a revert reason containing `errorCode`. Only codes up to 999 are
 * supported.
 * Uses the default 'BAL' prefix for the error code
 */
function _require(bool condition, uint256 errorCode) pure {
    if (!condition) _revert(errorCode);
}

/**
 * @dev Reverts if `condition` is false, with a revert reason containing `errorCode`. Only codes up to 999 are
 * supported.
 */
function _require(bool condition, uint256 errorCode, bytes3 prefix) pure {
    if (!condition) _revert(errorCode, prefix);
}

/**
 * @dev Reverts with a revert reason containing `errorCode`. Only codes up to 999 are supported.
 * Uses the default 'BAL' prefix for the error code
 */
function _revert(uint256 errorCode) pure {
    _revert(errorCode, 0x42414c); // This is the raw byte representation of "BAL"
}

/**
 * @dev Reverts with a revert reason containing `errorCode`. Only codes up to 999 are supported.
 */
function _revert(uint256 errorCode, bytes3 prefix) pure {
    uint256 prefixUint = uint256(uint24(prefix));
    // We're going to dynamically create a revert string based on the error code, with the following format:
    // 'BAL#{errorCode}'
    // where the code is left-padded with zeroes to three digits (so they range from 000 to 999).
    //
    // We don't have revert strings embedded in the contract to save bytecode size: it takes much less space to store a
    // number (8 to 16 bits) than the individual string characters.
    //
    // The dynamic string creation algorithm that follows could be implemented in Solidity, but assembly allows for a
    // much denser implementation, again saving bytecode size. Given this function unconditionally reverts, this is a
    // safe place to rely on it without worrying about how its usage might affect e.g. memory contents.
    assembly {
        // First, we need to compute the ASCII representation of the error code. We assume that it is in the 0-999
        // range, so we only need to convert three digits. To convert the digits to ASCII, we add 0x30, the value for
        // the '0' character.

        let units := add(mod(errorCode, 10), 0x30)

        errorCode := div(errorCode, 10)
        let tenths := add(mod(errorCode, 10), 0x30)

        errorCode := div(errorCode, 10)
        let hundreds := add(mod(errorCode, 10), 0x30)

        // With the individual characters, we can now construct the full string.
        // We first append the '#' character (0x23) to the prefix. In the case of 'BAL', it results in 0x42414c23 ('BAL#')
        // Then, we shift this by 24 (to provide space for the 3 bytes of the error code), and add the
        // characters to it, each shifted by a multiple of 8.
        // The revert reason is then shifted left by 200 bits (256 minus the length of the string, 7 characters * 8 bits
        // per character = 56) to locate it in the most significant part of the 256 slot (the beginning of a byte
        // array).
        let formattedPrefix := shl(24, add(0x23, shl(8, prefixUint)))

        let revertReason := shl(200, add(formattedPrefix, add(add(units, shl(8, tenths)), shl(16, hundreds))))

        // We can now encode the reason in memory, which can be safely overwritten as we're about to revert. The encoded
        // message will have the following layout:
        // [ revert reason identifier ] [ string location offset ] [ string length ] [ string contents ]

        // The Solidity revert reason identifier is 0x08c739a0, the function selector of the Error(string) function. We
        // also write zeroes to the next 28 bytes of memory, but those are about to be overwritten.
        mstore(0x0, 0x08c379a000000000000000000000000000000000000000000000000000000000)
        // Next is the offset to the location of the string, which will be placed immediately after (20 bytes away).
        mstore(0x04, 0x0000000000000000000000000000000000000000000000000000000000000020)
        // The string length is fixed: 7 characters.
        mstore(0x24, 7)
        // Finally, the string itself is stored.
        mstore(0x44, revertReason)

        // Even if the string is only 7 bytes long, we need to return a full 32 byte slot containing it. The length of
        // the encoded message is therefore 4 + 32 + 32 + 32 = 100.
        revert(0, 100)
    }
}

library Errors {
    // Math
    uint256 internal constant ADD_OVERFLOW = 0;
    uint256 internal constant SUB_OVERFLOW = 1;
    uint256 internal constant SUB_UNDERFLOW = 2;
    uint256 internal constant MUL_OVERFLOW = 3;
    uint256 internal constant ZERO_DIVISION = 4;
    uint256 internal constant DIV_INTERNAL = 5;
    uint256 internal constant X_OUT_OF_BOUNDS = 6;
    uint256 internal constant Y_OUT_OF_BOUNDS = 7;
    uint256 internal constant PRODUCT_OUT_OF_BOUNDS = 8;
    uint256 internal constant INVALID_EXPONENT = 9;

    // Input
    uint256 internal constant OUT_OF_BOUNDS = 100;
    uint256 internal constant UNSORTED_ARRAY = 101;
    uint256 internal constant UNSORTED_TOKENS = 102;
    uint256 internal constant INPUT_LENGTH_MISMATCH = 103;
    uint256 internal constant ZERO_TOKEN = 104;

    // Shared pools
    uint256 internal constant MIN_TOKENS = 200;
    uint256 internal constant MAX_TOKENS = 201;
    uint256 internal constant MAX_SWAP_FEE_PERCENTAGE = 202;
    uint256 internal constant MIN_SWAP_FEE_PERCENTAGE = 203;
    uint256 internal constant MINIMUM_BPT = 204;
    uint256 internal constant CALLER_NOT_VAULT = 205;
    uint256 internal constant UNINITIALIZED = 206;
    uint256 internal constant BPT_IN_MAX_AMOUNT = 207;
    uint256 internal constant BPT_OUT_MIN_AMOUNT = 208;
    uint256 internal constant EXPIRED_PERMIT = 209;
    uint256 internal constant NOT_TWO_TOKENS = 210;
    uint256 internal constant DISABLED = 211;

    // Pools
    uint256 internal constant MIN_AMP = 300;
    uint256 internal constant MAX_AMP = 301;
    uint256 internal constant MIN_WEIGHT = 302;
    uint256 internal constant MAX_STABLE_TOKENS = 303;
    uint256 internal constant MAX_IN_RATIO = 304;
    uint256 internal constant MAX_OUT_RATIO = 305;
    uint256 internal constant MIN_BPT_IN_FOR_TOKEN_OUT = 306;
    uint256 internal constant MAX_OUT_BPT_FOR_TOKEN_IN = 307;
    uint256 internal constant NORMALIZED_WEIGHT_INVARIANT = 308;
    uint256 internal constant INVALID_TOKEN = 309;
    uint256 internal constant UNHANDLED_JOIN_KIND = 310;
    uint256 internal constant ZERO_INVARIANT = 311;
    uint256 internal constant ORACLE_INVALID_SECONDS_QUERY = 312;
    uint256 internal constant ORACLE_NOT_INITIALIZED = 313;
    uint256 internal constant ORACLE_QUERY_TOO_OLD = 314;
    uint256 internal constant ORACLE_INVALID_INDEX = 315;
    uint256 internal constant ORACLE_BAD_SECS = 316;
    uint256 internal constant AMP_END_TIME_TOO_CLOSE = 317;
    uint256 internal constant AMP_ONGOING_UPDATE = 318;
    uint256 internal constant AMP_RATE_TOO_HIGH = 319;
    uint256 internal constant AMP_NO_ONGOING_UPDATE = 320;
    uint256 internal constant STABLE_INVARIANT_DIDNT_CONVERGE = 321;
    uint256 internal constant STABLE_GET_BALANCE_DIDNT_CONVERGE = 322;
    uint256 internal constant RELAYER_NOT_CONTRACT = 323;
    uint256 internal constant BASE_POOL_RELAYER_NOT_CALLED = 324;
    uint256 internal constant REBALANCING_RELAYER_REENTERED = 325;
    uint256 internal constant GRADUAL_UPDATE_TIME_TRAVEL = 326;
    uint256 internal constant SWAPS_DISABLED = 327;
    uint256 internal constant CALLER_IS_NOT_LBP_OWNER = 328;
    uint256 internal constant PRICE_RATE_OVERFLOW = 329;
    uint256 internal constant INVALID_JOIN_EXIT_KIND_WHILE_SWAPS_DISABLED = 330;
    uint256 internal constant WEIGHT_CHANGE_TOO_FAST = 331;
    uint256 internal constant LOWER_GREATER_THAN_UPPER_TARGET = 332;
    uint256 internal constant UPPER_TARGET_TOO_HIGH = 333;
    uint256 internal constant UNHANDLED_BY_LINEAR_POOL = 334;
    uint256 internal constant OUT_OF_TARGET_RANGE = 335;
    uint256 internal constant UNHANDLED_EXIT_KIND = 336;
    uint256 internal constant UNAUTHORIZED_EXIT = 337;
    uint256 internal constant MAX_MANAGEMENT_SWAP_FEE_PERCENTAGE = 338;
    uint256 internal constant UNHANDLED_BY_MANAGED_POOL = 339;
    uint256 internal constant UNHANDLED_BY_PHANTOM_POOL = 340;
    uint256 internal constant TOKEN_DOES_NOT_HAVE_RATE_PROVIDER = 341;
    uint256 internal constant INVALID_INITIALIZATION = 342;
    uint256 internal constant OUT_OF_NEW_TARGET_RANGE = 343;
    uint256 internal constant FEATURE_DISABLED = 344;
    uint256 internal constant UNINITIALIZED_POOL_CONTROLLER = 345;
    uint256 internal constant SET_SWAP_FEE_DURING_FEE_CHANGE = 346;
    uint256 internal constant SET_SWAP_FEE_PENDING_FEE_CHANGE = 347;
    uint256 internal constant CHANGE_TOKENS_DURING_WEIGHT_CHANGE = 348;
    uint256 internal constant CHANGE_TOKENS_PENDING_WEIGHT_CHANGE = 349;
    uint256 internal constant MAX_WEIGHT = 350;
    uint256 internal constant UNAUTHORIZED_JOIN = 351;
    uint256 internal constant MAX_MANAGEMENT_AUM_FEE_PERCENTAGE = 352;
    uint256 internal constant FRACTIONAL_TARGET = 353;

    // Lib
    uint256 internal constant REENTRANCY = 400;
    uint256 internal constant SENDER_NOT_ALLOWED = 401;
    uint256 internal constant PAUSED = 402;
    uint256 internal constant PAUSE_WINDOW_EXPIRED = 403;
    uint256 internal constant MAX_PAUSE_WINDOW_DURATION = 404;
    uint256 internal constant MAX_BUFFER_PERIOD_DURATION = 405;
    uint256 internal constant INSUFFICIENT_BALANCE = 406;
    uint256 internal constant INSUFFICIENT_ALLOWANCE = 407;
    uint256 internal constant ERC20_TRANSFER_FROM_ZERO_ADDRESS = 408;
    uint256 internal constant ERC20_TRANSFER_TO_ZERO_ADDRESS = 409;
    uint256 internal constant ERC20_MINT_TO_ZERO_ADDRESS = 410;
    uint256 internal constant ERC20_BURN_FROM_ZERO_ADDRESS = 411;
    uint256 internal constant ERC20_APPROVE_FROM_ZERO_ADDRESS = 412;
    uint256 internal constant ERC20_APPROVE_TO_ZERO_ADDRESS = 413;
    uint256 internal constant ERC20_TRANSFER_EXCEEDS_ALLOWANCE = 414;
    uint256 internal constant ERC20_DECREASED_ALLOWANCE_BELOW_ZERO = 415;
    uint256 internal constant ERC20_TRANSFER_EXCEEDS_BALANCE = 416;
    uint256 internal constant ERC20_BURN_EXCEEDS_ALLOWANCE = 417;
    uint256 internal constant SAFE_ERC20_CALL_FAILED = 418;
    uint256 internal constant ADDRESS_INSUFFICIENT_BALANCE = 419;
    uint256 internal constant ADDRESS_CANNOT_SEND_VALUE = 420;
    uint256 internal constant SAFE_CAST_VALUE_CANT_FIT_INT256 = 421;
    uint256 internal constant GRANT_SENDER_NOT_ADMIN = 422;
    uint256 internal constant REVOKE_SENDER_NOT_ADMIN = 423;
    uint256 internal constant RENOUNCE_SENDER_NOT_ALLOWED = 424;
    uint256 internal constant BUFFER_PERIOD_EXPIRED = 425;
    uint256 internal constant CALLER_IS_NOT_OWNER = 426;
    uint256 internal constant NEW_OWNER_IS_ZERO = 427;
    uint256 internal constant CODE_DEPLOYMENT_FAILED = 428;
    uint256 internal constant CALL_TO_NON_CONTRACT = 429;
    uint256 internal constant LOW_LEVEL_CALL_FAILED = 430;
    uint256 internal constant NOT_PAUSED = 431;
    uint256 internal constant ADDRESS_ALREADY_ALLOWLISTED = 432;
    uint256 internal constant ADDRESS_NOT_ALLOWLISTED = 433;
    uint256 internal constant ERC20_BURN_EXCEEDS_BALANCE = 434;
    uint256 internal constant INVALID_OPERATION = 435;
    uint256 internal constant CODEC_OVERFLOW = 436;
    uint256 internal constant IN_RECOVERY_MODE = 437;
    uint256 internal constant NOT_IN_RECOVERY_MODE = 438;
    uint256 internal constant INDUCED_FAILURE = 439;
    uint256 internal constant EXPIRED_SIGNATURE = 440;
    uint256 internal constant MALFORMED_SIGNATURE = 441;
    uint256 internal constant SAFE_CAST_VALUE_CANT_FIT_UINT64 = 442;
    uint256 internal constant UNHANDLED_FEE_TYPE = 443;

    // Vault
    uint256 internal constant INVALID_POOL_ID = 500;
    uint256 internal constant CALLER_NOT_POOL = 501;
    uint256 internal constant SENDER_NOT_ASSET_MANAGER = 502;
    uint256 internal constant USER_DOESNT_ALLOW_RELAYER = 503;
    uint256 internal constant INVALID_SIGNATURE = 504;
    uint256 internal constant EXIT_BELOW_MIN = 505;
    uint256 internal constant JOIN_ABOVE_MAX = 506;
    uint256 internal constant SWAP_LIMIT = 507;
    uint256 internal constant SWAP_DEADLINE = 508;
    uint256 internal constant CANNOT_SWAP_SAME_TOKEN = 509;
    uint256 internal constant UNKNOWN_AMOUNT_IN_FIRST_SWAP = 510;
    uint256 internal constant MALCONSTRUCTED_MULTIHOP_SWAP = 511;
    uint256 internal constant INTERNAL_BALANCE_OVERFLOW = 512;
    uint256 internal constant INSUFFICIENT_INTERNAL_BALANCE = 513;
    uint256 internal constant INVALID_ETH_INTERNAL_BALANCE = 514;
    uint256 internal constant INVALID_POST_LOAN_BALANCE = 515;
    uint256 internal constant INSUFFICIENT_ETH = 516;
    uint256 internal constant UNALLOCATED_ETH = 517;
    uint256 internal constant ETH_TRANSFER = 518;
    uint256 internal constant CANNOT_USE_ETH_SENTINEL = 519;
    uint256 internal constant TOKENS_MISMATCH = 520;
    uint256 internal constant TOKEN_NOT_REGISTERED = 521;
    uint256 internal constant TOKEN_ALREADY_REGISTERED = 522;
    uint256 internal constant TOKENS_ALREADY_SET = 523;
    uint256 internal constant TOKENS_LENGTH_MUST_BE_2 = 524;
    uint256 internal constant NONZERO_TOKEN_BALANCE = 525;
    uint256 internal constant BALANCE_TOTAL_OVERFLOW = 526;
    uint256 internal constant POOL_NO_TOKENS = 527;
    uint256 internal constant INSUFFICIENT_FLASH_LOAN_BALANCE = 528;

    // Fees
    uint256 internal constant SWAP_FEE_PERCENTAGE_TOO_HIGH = 600;
    uint256 internal constant FLASH_LOAN_FEE_PERCENTAGE_TOO_HIGH = 601;
    uint256 internal constant INSUFFICIENT_FLASH_LOAN_FEE_AMOUNT = 602;
    uint256 internal constant AUM_FEE_PERCENTAGE_TOO_HIGH = 603;

    // Misc
    uint256 internal constant UNIMPLEMENTED = 998;
    uint256 internal constant SHOULD_NOT_HAPPEN = 999;
}

// SPDX-License-Identifier: MIT
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
// documentation files (the “Software”), to deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
// Software.

// THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

pragma solidity ^0.7.0;

import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/BalancerErrors.sol";

/* solhint-disable */

/**
 * @dev Exponentiation and logarithm functions for 18 decimal fixed point numbers (both base and exponent/argument).
 *
 * Exponentiation and logarithm with arbitrary bases (x^y and log_x(y)) are implemented by conversion to natural
 * exponentiation and logarithm (where the base is Euler's number).
 *
 * @author Fernando Martinelli - @fernandomartinelli
 * @author Sergio Yuhjtman - @sergioyuhjtman
 * @author Daniel Fernandez - @dmf7z
 */
library LogExpMath {
    // All fixed point multiplications and divisions are inlined. This means we need to divide by ONE when multiplying
    // two numbers, and multiply by ONE when dividing them.

    // All arguments and return values are 18 decimal fixed point numbers.
    int256 constant ONE_18 = 1e18;

    // Internally, intermediate values are computed with higher precision as 20 decimal fixed point numbers, and in the
    // case of ln36, 36 decimals.
    int256 constant ONE_20 = 1e20;
    int256 constant ONE_36 = 1e36;

    // The domain of natural exponentiation is bound by the word size and number of decimals used.
    //
    // Because internally the result will be stored using 20 decimals, the largest possible result is
    // (2^255 - 1) / 10^20, which makes the largest exponent ln((2^255 - 1) / 10^20) = 130.700829182905140221.
    // The smallest possible result is 10^(-18), which makes largest negative argument
    // ln(10^(-18)) = -41.446531673892822312.
    // We use 130.0 and -41.0 to have some safety margin.
    int256 constant MAX_NATURAL_EXPONENT = 130e18;
    int256 constant MIN_NATURAL_EXPONENT = -41e18;

    // Bounds for ln_36's argument. Both ln(0.9) and ln(1.1) can be represented with 36 decimal places in a fixed point
    // 256 bit integer.
    int256 constant LN_36_LOWER_BOUND = ONE_18 - 1e17;
    int256 constant LN_36_UPPER_BOUND = ONE_18 + 1e17;

    uint256 constant MILD_EXPONENT_BOUND = 2**254 / uint256(ONE_20);

    // 18 decimal constants
    int256 constant x0 = 128000000000000000000; // 2ˆ7
    int256 constant a0 = 38877084059945950922200000000000000000000000000000000000; // eˆ(x0) (no decimals)
    int256 constant x1 = 64000000000000000000; // 2ˆ6
    int256 constant a1 = 6235149080811616882910000000; // eˆ(x1) (no decimals)

    // 20 decimal constants
    int256 constant x2 = 3200000000000000000000; // 2ˆ5
    int256 constant a2 = 7896296018268069516100000000000000; // eˆ(x2)
    int256 constant x3 = 1600000000000000000000; // 2ˆ4
    int256 constant a3 = 888611052050787263676000000; // eˆ(x3)
    int256 constant x4 = 800000000000000000000; // 2ˆ3
    int256 constant a4 = 298095798704172827474000; // eˆ(x4)
    int256 constant x5 = 400000000000000000000; // 2ˆ2
    int256 constant a5 = 5459815003314423907810; // eˆ(x5)
    int256 constant x6 = 200000000000000000000; // 2ˆ1
    int256 constant a6 = 738905609893065022723; // eˆ(x6)
    int256 constant x7 = 100000000000000000000; // 2ˆ0
    int256 constant a7 = 271828182845904523536; // eˆ(x7)
    int256 constant x8 = 50000000000000000000; // 2ˆ-1
    int256 constant a8 = 164872127070012814685; // eˆ(x8)
    int256 constant x9 = 25000000000000000000; // 2ˆ-2
    int256 constant a9 = 128402541668774148407; // eˆ(x9)
    int256 constant x10 = 12500000000000000000; // 2ˆ-3
    int256 constant a10 = 113314845306682631683; // eˆ(x10)
    int256 constant x11 = 6250000000000000000; // 2ˆ-4
    int256 constant a11 = 106449445891785942956; // eˆ(x11)

    /**
     * @dev Exponentiation (x^y) with unsigned 18 decimal fixed point base and exponent.
     *
     * Reverts if ln(x) * y is smaller than `MIN_NATURAL_EXPONENT`, or larger than `MAX_NATURAL_EXPONENT`.
     */
    function pow(uint256 x, uint256 y) internal pure returns (uint256) {
        if (y == 0) {
            // We solve the 0^0 indetermination by making it equal one.
            return uint256(ONE_18);
        }

        if (x == 0) {
            return 0;
        }

        // Instead of computing x^y directly, we instead rely on the properties of logarithms and exponentiation to
        // arrive at that result. In particular, exp(ln(x)) = x, and ln(x^y) = y * ln(x). This means
        // x^y = exp(y * ln(x)).

        // The ln function takes a signed value, so we need to make sure x fits in the signed 256 bit range.
        _require(x >> 255 == 0, Errors.X_OUT_OF_BOUNDS);
        int256 x_int256 = int256(x);

        // We will compute y * ln(x) in a single step. Depending on the value of x, we can either use ln or ln_36. In
        // both cases, we leave the division by ONE_18 (due to fixed point multiplication) to the end.

        // This prevents y * ln(x) from overflowing, and at the same time guarantees y fits in the signed 256 bit range.
        _require(y < MILD_EXPONENT_BOUND, Errors.Y_OUT_OF_BOUNDS);
        int256 y_int256 = int256(y);

        int256 logx_times_y;
        if (LN_36_LOWER_BOUND < x_int256 && x_int256 < LN_36_UPPER_BOUND) {
            int256 ln_36_x = _ln_36(x_int256);

            // ln_36_x has 36 decimal places, so multiplying by y_int256 isn't as straightforward, since we can't just
            // bring y_int256 to 36 decimal places, as it might overflow. Instead, we perform two 18 decimal
            // multiplications and add the results: one with the first 18 decimals of ln_36_x, and one with the
            // (downscaled) last 18 decimals.
            logx_times_y = ((ln_36_x / ONE_18) * y_int256 + ((ln_36_x % ONE_18) * y_int256) / ONE_18);
        } else {
            logx_times_y = _ln(x_int256) * y_int256;
        }
        logx_times_y /= ONE_18;

        // Finally, we compute exp(y * ln(x)) to arrive at x^y
        _require(
            MIN_NATURAL_EXPONENT <= logx_times_y && logx_times_y <= MAX_NATURAL_EXPONENT,
            Errors.PRODUCT_OUT_OF_BOUNDS
        );

        return uint256(exp(logx_times_y));
    }

    /**
     * @dev Natural exponentiation (e^x) with signed 18 decimal fixed point exponent.
     *
     * Reverts if `x` is smaller than MIN_NATURAL_EXPONENT, or larger than `MAX_NATURAL_EXPONENT`.
     */
    function exp(int256 x) internal pure returns (int256) {
        _require(x >= MIN_NATURAL_EXPONENT && x <= MAX_NATURAL_EXPONENT, Errors.INVALID_EXPONENT);

        if (x < 0) {
            // We only handle positive exponents: e^(-x) is computed as 1 / e^x. We can safely make x positive since it
            // fits in the signed 256 bit range (as it is larger than MIN_NATURAL_EXPONENT).
            // Fixed point division requires multiplying by ONE_18.
            return ((ONE_18 * ONE_18) / exp(-x));
        }

        // First, we use the fact that e^(x+y) = e^x * e^y to decompose x into a sum of powers of two, which we call x_n,
        // where x_n == 2^(7 - n), and e^x_n = a_n has been precomputed. We choose the first x_n, x0, to equal 2^7
        // because all larger powers are larger than MAX_NATURAL_EXPONENT, and therefore not present in the
        // decomposition.
        // At the end of this process we will have the product of all e^x_n = a_n that apply, and the remainder of this
        // decomposition, which will be lower than the smallest x_n.
        // exp(x) = k_0 * a_0 * k_1 * a_1 * ... + k_n * a_n * exp(remainder), where each k_n equals either 0 or 1.
        // We mutate x by subtracting x_n, making it the remainder of the decomposition.

        // The first two a_n (e^(2^7) and e^(2^6)) are too large if stored as 18 decimal numbers, and could cause
        // intermediate overflows. Instead we store them as plain integers, with 0 decimals.
        // Additionally, x0 + x1 is larger than MAX_NATURAL_EXPONENT, which means they will not both be present in the
        // decomposition.

        // For each x_n, we test if that term is present in the decomposition (if x is larger than it), and if so deduct
        // it and compute the accumulated product.

        int256 firstAN;
        if (x >= x0) {
            x -= x0;
            firstAN = a0;
        } else if (x >= x1) {
            x -= x1;
            firstAN = a1;
        } else {
            firstAN = 1; // One with no decimal places
        }

        // We now transform x into a 20 decimal fixed point number, to have enhanced precision when computing the
        // smaller terms.
        x *= 100;

        // `product` is the accumulated product of all a_n (except a0 and a1), which starts at 20 decimal fixed point
        // one. Recall that fixed point multiplication requires dividing by ONE_20.
        int256 product = ONE_20;

        if (x >= x2) {
            x -= x2;
            product = (product * a2) / ONE_20;
        }
        if (x >= x3) {
            x -= x3;
            product = (product * a3) / ONE_20;
        }
        if (x >= x4) {
            x -= x4;
            product = (product * a4) / ONE_20;
        }
        if (x >= x5) {
            x -= x5;
            product = (product * a5) / ONE_20;
        }
        if (x >= x6) {
            x -= x6;
            product = (product * a6) / ONE_20;
        }
        if (x >= x7) {
            x -= x7;
            product = (product * a7) / ONE_20;
        }
        if (x >= x8) {
            x -= x8;
            product = (product * a8) / ONE_20;
        }
        if (x >= x9) {
            x -= x9;
            product = (product * a9) / ONE_20;
        }

        // x10 and x11 are unnecessary here since we have high enough precision already.

        // Now we need to compute e^x, where x is small (in particular, it is smaller than x9). We use the Taylor series
        // expansion for e^x: 1 + x + (x^2 / 2!) + (x^3 / 3!) + ... + (x^n / n!).

        int256 seriesSum = ONE_20; // The initial one in the sum, with 20 decimal places.
        int256 term; // Each term in the sum, where the nth term is (x^n / n!).

        // The first term is simply x.
        term = x;
        seriesSum += term;

        // Each term (x^n / n!) equals the previous one times x, divided by n. Since x is a fixed point number,
        // multiplying by it requires dividing by ONE_20, but dividing by the non-fixed point n values does not.

        term = ((term * x) / ONE_20) / 2;
        seriesSum += term;

        term = ((term * x) / ONE_20) / 3;
        seriesSum += term;

        term = ((term * x) / ONE_20) / 4;
        seriesSum += term;

        term = ((term * x) / ONE_20) / 5;
        seriesSum += term;

        term = ((term * x) / ONE_20) / 6;
        seriesSum += term;

        term = ((term * x) / ONE_20) / 7;
        seriesSum += term;

        term = ((term * x) / ONE_20) / 8;
        seriesSum += term;

        term = ((term * x) / ONE_20) / 9;
        seriesSum += term;

        term = ((term * x) / ONE_20) / 10;
        seriesSum += term;

        term = ((term * x) / ONE_20) / 11;
        seriesSum += term;

        term = ((term * x) / ONE_20) / 12;
        seriesSum += term;

        // 12 Taylor terms are sufficient for 18 decimal precision.

        // We now have the first a_n (with no decimals), and the product of all other a_n present, and the Taylor
        // approximation of the exponentiation of the remainder (both with 20 decimals). All that remains is to multiply
        // all three (one 20 decimal fixed point multiplication, dividing by ONE_20, and one integer multiplication),
        // and then drop two digits to return an 18 decimal value.

        return (((product * seriesSum) / ONE_20) * firstAN) / 100;
    }

    /**
     * @dev Logarithm (log(arg, base), with signed 18 decimal fixed point base and argument.
     */
    function log(int256 arg, int256 base) internal pure returns (int256) {
        // This performs a simple base change: log(arg, base) = ln(arg) / ln(base).

        // Both logBase and logArg are computed as 36 decimal fixed point numbers, either by using ln_36, or by
        // upscaling.

        int256 logBase;
        if (LN_36_LOWER_BOUND < base && base < LN_36_UPPER_BOUND) {
            logBase = _ln_36(base);
        } else {
            logBase = _ln(base) * ONE_18;
        }

        int256 logArg;
        if (LN_36_LOWER_BOUND < arg && arg < LN_36_UPPER_BOUND) {
            logArg = _ln_36(arg);
        } else {
            logArg = _ln(arg) * ONE_18;
        }

        // When dividing, we multiply by ONE_18 to arrive at a result with 18 decimal places
        return (logArg * ONE_18) / logBase;
    }

    /**
     * @dev Natural logarithm (ln(a)) with signed 18 decimal fixed point argument.
     */
    function ln(int256 a) internal pure returns (int256) {
        // The real natural logarithm is not defined for negative numbers or zero.
        _require(a > 0, Errors.OUT_OF_BOUNDS);
        if (LN_36_LOWER_BOUND < a && a < LN_36_UPPER_BOUND) {
            return _ln_36(a) / ONE_18;
        } else {
            return _ln(a);
        }
    }

    /**
     * @dev Internal natural logarithm (ln(a)) with signed 18 decimal fixed point argument.
     */
    function _ln(int256 a) private pure returns (int256) {
        if (a < ONE_18) {
            // Since ln(a^k) = k * ln(a), we can compute ln(a) as ln(a) = ln((1/a)^(-1)) = - ln((1/a)). If a is less
            // than one, 1/a will be greater than one, and this if statement will not be entered in the recursive call.
            // Fixed point division requires multiplying by ONE_18.
            return (-_ln((ONE_18 * ONE_18) / a));
        }

        // First, we use the fact that ln^(a * b) = ln(a) + ln(b) to decompose ln(a) into a sum of powers of two, which
        // we call x_n, where x_n == 2^(7 - n), which are the natural logarithm of precomputed quantities a_n (that is,
        // ln(a_n) = x_n). We choose the first x_n, x0, to equal 2^7 because the exponential of all larger powers cannot
        // be represented as 18 fixed point decimal numbers in 256 bits, and are therefore larger than a.
        // At the end of this process we will have the sum of all x_n = ln(a_n) that apply, and the remainder of this
        // decomposition, which will be lower than the smallest a_n.
        // ln(a) = k_0 * x_0 + k_1 * x_1 + ... + k_n * x_n + ln(remainder), where each k_n equals either 0 or 1.
        // We mutate a by subtracting a_n, making it the remainder of the decomposition.

        // For reasons related to how `exp` works, the first two a_n (e^(2^7) and e^(2^6)) are not stored as fixed point
        // numbers with 18 decimals, but instead as plain integers with 0 decimals, so we need to multiply them by
        // ONE_18 to convert them to fixed point.
        // For each a_n, we test if that term is present in the decomposition (if a is larger than it), and if so divide
        // by it and compute the accumulated sum.

        int256 sum = 0;
        if (a >= a0 * ONE_18) {
            a /= a0; // Integer, not fixed point division
            sum += x0;
        }

        if (a >= a1 * ONE_18) {
            a /= a1; // Integer, not fixed point division
            sum += x1;
        }

        // All other a_n and x_n are stored as 20 digit fixed point numbers, so we convert the sum and a to this format.
        sum *= 100;
        a *= 100;

        // Because further a_n are  20 digit fixed point numbers, we multiply by ONE_20 when dividing by them.

        if (a >= a2) {
            a = (a * ONE_20) / a2;
            sum += x2;
        }

        if (a >= a3) {
            a = (a * ONE_20) / a3;
            sum += x3;
        }

        if (a >= a4) {
            a = (a * ONE_20) / a4;
            sum += x4;
        }

        if (a >= a5) {
            a = (a * ONE_20) / a5;
            sum += x5;
        }

        if (a >= a6) {
            a = (a * ONE_20) / a6;
            sum += x6;
        }

        if (a >= a7) {
            a = (a * ONE_20) / a7;
            sum += x7;
        }

        if (a >= a8) {
            a = (a * ONE_20) / a8;
            sum += x8;
        }

        if (a >= a9) {
            a = (a * ONE_20) / a9;
            sum += x9;
        }

        if (a >= a10) {
            a = (a * ONE_20) / a10;
            sum += x10;
        }

        if (a >= a11) {
            a = (a * ONE_20) / a11;
            sum += x11;
        }

        // a is now a small number (smaller than a_11, which roughly equals 1.06). This means we can use a Taylor series
        // that converges rapidly for values of `a` close to one - the same one used in ln_36.
        // Let z = (a - 1) / (a + 1).
        // ln(a) = 2 * (z + z^3 / 3 + z^5 / 5 + z^7 / 7 + ... + z^(2 * n + 1) / (2 * n + 1))

        // Recall that 20 digit fixed point division requires multiplying by ONE_20, and multiplication requires
        // division by ONE_20.
        int256 z = ((a - ONE_20) * ONE_20) / (a + ONE_20);
        int256 z_squared = (z * z) / ONE_20;

        // num is the numerator of the series: the z^(2 * n + 1) term
        int256 num = z;

        // seriesSum holds the accumulated sum of each term in the series, starting with the initial z
        int256 seriesSum = num;

        // In each step, the numerator is multiplied by z^2
        num = (num * z_squared) / ONE_20;
        seriesSum += num / 3;

        num = (num * z_squared) / ONE_20;
        seriesSum += num / 5;

        num = (num * z_squared) / ONE_20;
        seriesSum += num / 7;

        num = (num * z_squared) / ONE_20;
        seriesSum += num / 9;

        num = (num * z_squared) / ONE_20;
        seriesSum += num / 11;

        // 6 Taylor terms are sufficient for 36 decimal precision.

        // Finally, we multiply by 2 (non fixed point) to compute ln(remainder)
        seriesSum *= 2;

        // We now have the sum of all x_n present, and the Taylor approximation of the logarithm of the remainder (both
        // with 20 decimals). All that remains is to sum these two, and then drop two digits to return a 18 decimal
        // value.

        return (sum + seriesSum) / 100;
    }

    /**
     * @dev Intrnal high precision (36 decimal places) natural logarithm (ln(x)) with signed 18 decimal fixed point argument,
     * for x close to one.
     *
     * Should only be used if x is between LN_36_LOWER_BOUND and LN_36_UPPER_BOUND.
     */
    function _ln_36(int256 x) private pure returns (int256) {
        // Since ln(1) = 0, a value of x close to one will yield a very small result, which makes using 36 digits
        // worthwhile.

        // First, we transform x to a 36 digit fixed point value.
        x *= ONE_18;

        // We will use the following Taylor expansion, which converges very rapidly. Let z = (x - 1) / (x + 1).
        // ln(x) = 2 * (z + z^3 / 3 + z^5 / 5 + z^7 / 7 + ... + z^(2 * n + 1) / (2 * n + 1))

        // Recall that 36 digit fixed point division requires multiplying by ONE_36, and multiplication requires
        // division by ONE_36.
        int256 z = ((x - ONE_36) * ONE_36) / (x + ONE_36);
        int256 z_squared = (z * z) / ONE_36;

        // num is the numerator of the series: the z^(2 * n + 1) term
        int256 num = z;

        // seriesSum holds the accumulated sum of each term in the series, starting with the initial z
        int256 seriesSum = num;

        // In each step, the numerator is multiplied by z^2
        num = (num * z_squared) / ONE_36;
        seriesSum += num / 3;

        num = (num * z_squared) / ONE_36;
        seriesSum += num / 5;

        num = (num * z_squared) / ONE_36;
        seriesSum += num / 7;

        num = (num * z_squared) / ONE_36;
        seriesSum += num / 9;

        num = (num * z_squared) / ONE_36;
        seriesSum += num / 11;

        num = (num * z_squared) / ONE_36;
        seriesSum += num / 13;

        num = (num * z_squared) / ONE_36;
        seriesSum += num / 15;

        // 8 Taylor terms are sufficient for 36 decimal precision.

        // All that remains is multiplying by 2 (non fixed point).
        return seriesSum * 2;
    }
}

// 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 "./IBasePool.sol";

/**
 * @dev Pool contracts with the MinimalSwapInfo or TwoToken specialization settings should implement this interface.
 *
 * This is called by the Vault when a user calls `IVault.swap` or `IVault.batchSwap` to swap with this Pool.
 * Returns the number of tokens the Pool will grant to the user in a 'given in' swap, or that the user will grant
 * to the pool in a 'given out' swap.
 *
 * This can often be implemented by a `view` function, since many pricing algorithms don't need to track state
 * changes in swaps. However, contracts implementing this in non-view functions should check that the caller is
 * indeed the Vault.
 */
interface IMinimalSwapInfoPool is IBasePool {
    function onSwap(
        SwapRequest memory swapRequest,
        uint256 currentBalanceTokenIn,
        uint256 currentBalanceTokenOut
    ) external returns (uint256 amount);
}

// 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/pool-utils/IAssetManager.sol";
import "@balancer-labs/v2-interfaces/contracts/pool-utils/IControlledPool.sol";
import "@balancer-labs/v2-interfaces/contracts/vault/IVault.sol";
import "@balancer-labs/v2-interfaces/contracts/vault/IBasePool.sol";

import "@balancer-labs/v2-solidity-utils/contracts/helpers/InputHelpers.sol";
import "@balancer-labs/v2-solidity-utils/contracts/helpers/WordCodec.sol";
import "@balancer-labs/v2-solidity-utils/contracts/helpers/TemporarilyPausable.sol";
import "@balancer-labs/v2-solidity-utils/contracts/openzeppelin/ERC20.sol";
import "@balancer-labs/v2-solidity-utils/contracts/math/FixedPoint.sol";
import "@balancer-labs/v2-solidity-utils/contracts/math/Math.sol";

import "./BalancerPoolToken.sol";
import "./BasePoolAuthorization.sol";
import "./RecoveryMode.sol";

// solhint-disable max-states-count

/**
 * @notice Reference implementation for the base layer of a Pool contract.
 * @dev Reference implementation for the base layer of a Pool contract that manages a single Pool with optional
 * Asset Managers, an admin-controlled swap fee percentage, and an emergency pause mechanism.
 *
 * This Pool pays protocol fees by minting BPT directly to the ProtocolFeeCollector instead of using the
 * `dueProtocolFees` return value. This results in the underlying tokens continuing to provide liquidity
 * for traders, while still keeping gas usage to a minimum since only a single token (the BPT) is transferred.
 *
 * Note that neither swap fees nor the pause mechanism are used by this contract. They are passed through so that
 * derived contracts can use them via the `_addSwapFeeAmount` and `_subtractSwapFeeAmount` functions, and the
 * `whenNotPaused` modifier.
 *
 * No admin permissions are checked here: instead, this contract delegates that to the Vault's own Authorizer.
 *
 * Because this contract doesn't implement the swap hooks, derived contracts should generally inherit from
 * BaseGeneralPool or BaseMinimalSwapInfoPool. Otherwise, subclasses must inherit from the corresponding interfaces
 * and implement the swap callbacks themselves.
 */
abstract contract BasePool is
    IBasePool,
    IControlledPool,
    BasePoolAuthorization,
    BalancerPoolToken,
    TemporarilyPausable,
    RecoveryMode
{
    using WordCodec for bytes32;
    using FixedPoint for uint256;
    using BasePoolUserData for bytes;

    uint256 private constant _MIN_TOKENS = 2;

    uint256 private constant _DEFAULT_MINIMUM_BPT = 1e6;

    // 1e18 corresponds to 1.0, or a 100% fee
    uint256 private constant _MIN_SWAP_FEE_PERCENTAGE = 1e12; // 0.0001%
    uint256 private constant _MAX_SWAP_FEE_PERCENTAGE = 1e17; // 10% - this fits in 64 bits

    // `_miscData` is a storage slot that can be used to store unrelated pieces of information. All pools store the
    // recovery mode flag and swap fee percentage, but `miscData` can be extended to store more pieces of information.
    // The most signficant bit is reserved for the recovery mode flag, and the swap fee percentage is stored in
    // the next most significant 63 bits, leaving the remaining 192 bits free to store any other information derived
    // pools might need.
    //
    // This slot is preferred for gas-sensitive operations as it is read in all joins, swaps and exits,
    // and therefore warm.

    // [ recovery | swap  fee | available ]
    // [   1 bit  |  63 bits  |  192 bits ]
    // [ MSB                          LSB ]
    bytes32 private _miscData;

    uint256 private constant _SWAP_FEE_PERCENTAGE_OFFSET = 192;
    uint256 private constant _RECOVERY_MODE_BIT_OFFSET = 255;

    // A fee can never be larger than FixedPoint.ONE, which fits in 60 bits, so 63 is more than enough.
    uint256 private constant _SWAP_FEE_PERCENTAGE_BIT_LENGTH = 63;

    bytes32 private immutable _poolId;

    // Note that this value is immutable in the Vault, so we can make it immutable here and save gas
    IProtocolFeesCollector private immutable _protocolFeesCollector;

    event SwapFeePercentageChanged(uint256 swapFeePercentage);

    constructor(
        IVault vault,
        IVault.PoolSpecialization specialization,
        string memory name,
        string memory symbol,
        IERC20[] memory tokens,
        address[] memory assetManagers,
        uint256 swapFeePercentage,
        uint256 pauseWindowDuration,
        uint256 bufferPeriodDuration,
        address owner
    )
        // Base Pools are expected to be deployed using factories. By using the factory address as the action
        // disambiguator, we make all Pools deployed by the same factory share action identifiers. This allows for
        // simpler management of permissions (such as being able to manage granting the 'set fee percentage' action in
        // any Pool created by the same factory), while still making action identifiers unique among different factories
        // if the selectors match, preventing accidental errors.
        Authentication(bytes32(uint256(msg.sender)))
        BalancerPoolToken(name, symbol, vault)
        BasePoolAuthorization(owner)
        TemporarilyPausable(pauseWindowDuration, bufferPeriodDuration)
    {
        _require(tokens.length >= _MIN_TOKENS, Errors.MIN_TOKENS);
        _require(tokens.length <= _getMaxTokens(), Errors.MAX_TOKENS);

        // The Vault only requires the token list to be ordered for the Two Token Pools specialization. However,
        // to make the developer experience consistent, we are requiring this condition for all the native pools.
        // Also, since these Pools will register tokens only once, we can ensure the Pool tokens will follow the same
        // order. We rely on this property to make Pools simpler to write, as it lets us assume that the
        // order of token-specific parameters (such as token weights) will not change.
        InputHelpers.ensureArrayIsSorted(tokens);

        _setSwapFeePercentage(swapFeePercentage);

        bytes32 poolId = vault.registerPool(specialization);

        vault.registerTokens(poolId, tokens, assetManagers);

        // Set immutable state variables - these cannot be read from during construction
        _poolId = poolId;
        _protocolFeesCollector = vault.getProtocolFeesCollector();
    }

    // Getters / Setters

    /**
     * @notice Return the pool id.
     */
    function getPoolId() public view override returns (bytes32) {
        return _poolId;
    }

    function _getTotalTokens() internal view virtual returns (uint256);

    function _getMaxTokens() internal pure virtual returns (uint256);

    /**
     * @dev Returns the minimum BPT supply. This amount is minted to the zero address during initialization, effectively
     * locking it.
     *
     * This is useful to make sure Pool initialization happens only once, but derived Pools can change this value (even
     * to zero) by overriding this function.
     */
    function _getMinimumBpt() internal pure virtual returns (uint256) {
        return _DEFAULT_MINIMUM_BPT;
    }

    /**
     * @notice Return the current value of the swap fee percentage.
     * @dev This is stored in `_miscData`.
     */
    function getSwapFeePercentage() public view virtual override returns (uint256) {
        return _miscData.decodeUint(_SWAP_FEE_PERCENTAGE_OFFSET, _SWAP_FEE_PERCENTAGE_BIT_LENGTH);
    }

    /**
     * @notice Return the ProtocolFeesCollector contract.
     * @dev This is immutable, and retrieved from the Vault on construction. (It is also immutable in the Vault.)
     */
    function getProtocolFeesCollector() public view returns (IProtocolFeesCollector) {
        return _protocolFeesCollector;
    }

    /**
     * @notice Set the swap fee percentage.
     * @dev This is a permissioned function, and disabled if the pool is paused. The swap fee must be within the
     * bounds set by MIN_SWAP_FEE_PERCENTAGE/MAX_SWAP_FEE_PERCENTAGE. Emits the SwapFeePercentageChanged event.
     */
    function setSwapFeePercentage(uint256 swapFeePercentage) public virtual override authenticate whenNotPaused {
        _setSwapFeePercentage(swapFeePercentage);
    }

    function _setSwapFeePercentage(uint256 swapFeePercentage) internal virtual {
        _require(swapFeePercentage >= _getMinSwapFeePercentage(), Errors.MIN_SWAP_FEE_PERCENTAGE);
        _require(swapFeePercentage <= _getMaxSwapFeePercentage(), Errors.MAX_SWAP_FEE_PERCENTAGE);

        _miscData = _miscData.insertUint(
            swapFeePercentage,
            _SWAP_FEE_PERCENTAGE_OFFSET,
            _SWAP_FEE_PERCENTAGE_BIT_LENGTH
        );

        emit SwapFeePercentageChanged(swapFeePercentage);
    }

    function _getMinSwapFeePercentage() internal pure virtual returns (uint256) {
        return _MIN_SWAP_FEE_PERCENTAGE;
    }

    function _getMaxSwapFeePercentage() internal pure virtual returns (uint256) {
        return _MAX_SWAP_FEE_PERCENTAGE;
    }

    /**
     * @notice Returns whether the pool is in Recovery Mode.
     */
    function inRecoveryMode() public view override returns (bool) {
        return _miscData.decodeBool(_RECOVERY_MODE_BIT_OFFSET);
    }

    /**
     * @dev Sets the recoveryMode state, and emits the corresponding event.
     */
    function _setRecoveryMode(bool enabled) internal virtual override {
        _miscData = _miscData.insertBool(enabled, _RECOVERY_MODE_BIT_OFFSET);

        emit RecoveryModeStateChanged(enabled);

        // Some pools need to update their state when leaving recovery mode to ensure proper functioning of the Pool.
        // We do not allow an `_onEnableRecoveryMode()` hook as this may jeopardize the ability to enable Recovery mode.
        if (!enabled) _onDisableRecoveryMode();
    }

    /**
     * @dev Performs any necessary actions on the disabling of Recovery Mode.
     * This is usually to reset any fee collection mechanisms to ensure that they operate correctly going forward.
     */
    function _onDisableRecoveryMode() internal virtual {
        // solhint-disable-previous-line no-empty-blocks
    }

    /**
     * @notice Set the asset manager parameters for the given token.
     * @dev This is a permissioned function, unavailable when the pool is paused.
     * The details of the configuration data are set by each Asset Manager. (For an example, see
     * `RewardsAssetManager`.)
     */
    function setAssetManagerPoolConfig(IERC20 token, bytes memory poolConfig)
        public
        virtual
        override
        authenticate
        whenNotPaused
    {
        _setAssetManagerPoolConfig(token, poolConfig);
    }

    function _setAssetManagerPoolConfig(IERC20 token, bytes memory poolConfig) private {
        bytes32 poolId = getPoolId();
        (, , , address assetManager) = getVault().getPoolTokenInfo(poolId, token);

        IAssetManager(assetManager).setConfig(poolId, poolConfig);
    }

    /**
     * @notice Pause the pool: an emergency action which disables all pool functions.
     * @dev This is a permissioned function that will only work during the Pause Window set during pool factory
     * deployment (see `TemporarilyPausable`).
     */
    function pause() external authenticate {
        _setPaused(true);
    }

    /**
     * @notice Reverse a `pause` operation, and restore a pool to normal functionality.
     * @dev This is a permissioned function that will only work on a paused pool within the Buffer Period set during
     * pool factory deployment (see `TemporarilyPausable`). Note that any paused pools will automatically unpause
     * after the Buffer Period expires.
     */
    function unpause() external authenticate {
        _setPaused(false);
    }

    function _isOwnerOnlyAction(bytes32 actionId) internal view virtual override returns (bool) {
        return
            (actionId == getActionId(this.setSwapFeePercentage.selector)) ||
            (actionId == getActionId(this.setAssetManagerPoolConfig.selector));
    }

    function _getMiscData() internal view returns (bytes32) {
        return _miscData;
    }

    /**
     * @dev Inserts data into the least-significant 192 bits of the misc data storage slot.
     * Note that the remaining 64 bits are used for the swap fee percentage and cannot be overloaded.
     */
    function _setMiscData(bytes32 newData) internal {
        _miscData = _miscData.insertBits192(newData, 0);
    }

    // Join / Exit Hooks

    modifier onlyVault(bytes32 poolId) {
        _require(msg.sender == address(getVault()), Errors.CALLER_NOT_VAULT);
        _require(poolId == getPoolId(), Errors.INVALID_POOL_ID);
        _;
    }

    /**
     * @notice Vault hook for adding liquidity to a pool (including the first time, "initializing" the pool).
     * @dev This function can only be called from the Vault, from `joinPool`.
     */
    function onJoinPool(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory balances,
        uint256 lastChangeBlock,
        uint256 protocolSwapFeePercentage,
        bytes memory userData
    ) external override onlyVault(poolId) returns (uint256[] memory, uint256[] memory) {
        _beforeSwapJoinExit();

        uint256[] memory scalingFactors = _scalingFactors();

        if (totalSupply() == 0) {
            (uint256 bptAmountOut, uint256[] memory amountsIn) = _onInitializePool(
                poolId,
                sender,
                recipient,
                scalingFactors,
                userData
            );

            // On initialization, we lock _getMinimumBpt() by minting it for the zero address. This BPT acts as a
            // minimum as it will never be burned, which reduces potential issues with rounding, and also prevents the
            // Pool from ever being fully drained.
            _require(bptAmountOut >= _getMinimumBpt(), Errors.MINIMUM_BPT);
            _mintPoolTokens(address(0), _getMinimumBpt());
            _mintPoolTokens(recipient, bptAmountOut - _getMinimumBpt());

            // amountsIn are amounts entering the Pool, so we round up.
            _downscaleUpArray(amountsIn, scalingFactors);

            return (amountsIn, new uint256[](balances.length));
        } else {
            _upscaleArray(balances, scalingFactors);
            (uint256 bptAmountOut, uint256[] memory amountsIn) = _onJoinPool(
                poolId,
                sender,
                recipient,
                balances,
                lastChangeBlock,
                inRecoveryMode() ? 0 : protocolSwapFeePercentage, // Protocol fees are disabled while in recovery mode
                scalingFactors,
                userData
            );

            // Note we no longer use `balances` after calling `_onJoinPool`, which may mutate it.

            _mintPoolTokens(recipient, bptAmountOut);

            // amountsIn are amounts entering the Pool, so we round up.
            _downscaleUpArray(amountsIn, scalingFactors);

            // This Pool ignores the `dueProtocolFees` return value, so we simply return a zeroed-out array.
            return (amountsIn, new uint256[](balances.length));
        }
    }

    /**
     * @notice Vault hook for removing liquidity from a pool.
     * @dev This function can only be called from the Vault, from `exitPool`.
     */
    function onExitPool(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory balances,
        uint256 lastChangeBlock,
        uint256 protocolSwapFeePercentage,
        bytes memory userData
    ) external override onlyVault(poolId) returns (uint256[] memory, uint256[] memory) {
        uint256[] memory amountsOut;
        uint256 bptAmountIn;

        // When a user calls `exitPool`, this is the first point of entry from the Vault.
        // We first check whether this is a Recovery Mode exit - if so, we proceed using this special lightweight exit
        // mechanism which avoids computing any complex values, interacting with external contracts, etc., and generally
        // should always work, even if the Pool's mathematics or a dependency break down.
        if (userData.isRecoveryModeExitKind()) {
            // This exit kind is only available in Recovery Mode.
            _ensureInRecoveryMode();

            // Note that we don't upscale balances nor downscale amountsOut - we don't care about scaling factors during
            // a recovery mode exit.
            (bptAmountIn, amountsOut) = _doRecoveryModeExit(balances, totalSupply(), userData);
        } else {
            // Note that we only call this if we're not in a recovery mode exit.
            _beforeSwapJoinExit();

            uint256[] memory scalingFactors = _scalingFactors();
            _upscaleArray(balances, scalingFactors);

            (bptAmountIn, amountsOut) = _onExitPool(
                poolId,
                sender,
                recipient,
                balances,
                lastChangeBlock,
                inRecoveryMode() ? 0 : protocolSwapFeePercentage, // Protocol fees are disabled while in recovery mode
                scalingFactors,
                userData
            );

            // amountsOut are amounts exiting the Pool, so we round down.
            _downscaleDownArray(amountsOut, scalingFactors);
        }

        // Note we no longer use `balances` after calling `_onExitPool`, which may mutate it.

        _burnPoolTokens(sender, bptAmountIn);

        // This Pool ignores the `dueProtocolFees` return value, so we simply return a zeroed-out array.
        return (amountsOut, new uint256[](balances.length));
    }

    // Query functions

    /**
     * @notice "Dry run" `onJoinPool`.
     * @dev Returns the amount of BPT that would be granted to `recipient` if the `onJoinPool` hook were called by the
     * Vault with the same arguments, along with the number of tokens `sender` would have to supply.
     *
     * This function is not meant to be called directly, but rather from a helper contract that fetches current Vault
     * data, such as the protocol swap fee percentage and Pool balances.
     *
     * Like `IVault.queryBatchSwap`, this function is not view due to internal implementation details: the caller must
     * explicitly use eth_call instead of eth_sendTransaction.
     */
    function queryJoin(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory balances,
        uint256 lastChangeBlock,
        uint256 protocolSwapFeePercentage,
        bytes memory userData
    ) external override returns (uint256 bptOut, uint256[] memory amountsIn) {
        InputHelpers.ensureInputLengthMatch(balances.length, _getTotalTokens());

        _queryAction(
            poolId,
            sender,
            recipient,
            balances,
            lastChangeBlock,
            protocolSwapFeePercentage,
            userData,
            _onJoinPool,
            _downscaleUpArray
        );

        // The `return` opcode is executed directly inside `_queryAction`, so execution never reaches this statement,
        // and we don't need to return anything here - it just silences compiler warnings.
        return (bptOut, amountsIn);
    }

    /**
     * @notice "Dry run" `onExitPool`.
     * @dev Returns the amount of BPT that would be burned from `sender` if the `onExitPool` hook were called by the
     * Vault with the same arguments, along with the number of tokens `recipient` would receive.
     *
     * This function is not meant to be called directly, but rather from a helper contract that fetches current Vault
     * data, such as the protocol swap fee percentage and Pool balances.
     *
     * Like `IVault.queryBatchSwap`, this function is not view due to internal implementation details: the caller must
     * explicitly use eth_call instead of eth_sendTransaction.
     */
    function queryExit(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory balances,
        uint256 lastChangeBlock,
        uint256 protocolSwapFeePercentage,
        bytes memory userData
    ) external override returns (uint256 bptIn, uint256[] memory amountsOut) {
        InputHelpers.ensureInputLengthMatch(balances.length, _getTotalTokens());

        _queryAction(
            poolId,
            sender,
            recipient,
            balances,
            lastChangeBlock,
            protocolSwapFeePercentage,
            userData,
            _onExitPool,
            _downscaleDownArray
        );

        // The `return` opcode is executed directly inside `_queryAction`, so execution never reaches this statement,
        // and we don't need to return anything here - it just silences compiler warnings.
        return (bptIn, amountsOut);
    }

    // Internal hooks to be overridden by derived contracts - all token amounts (except BPT) in these interfaces are
    // upscaled.

    /**
     * @dev Called when the Pool is joined for the first time; that is, when the BPT total supply is zero.
     *
     * Returns the amount of BPT to mint, and the token amounts the Pool will receive in return.
     *
     * Minted BPT will be sent to `recipient`, except for _getMinimumBpt(), which will be deducted from this amount and
     * sent to the zero address instead. This will cause that BPT to remain forever locked there, preventing total BTP
     * from ever dropping below that value, and ensuring `_onInitializePool` can only be called once in the entire
     * Pool's lifetime.
     *
     * The tokens granted to the Pool will be transferred from `sender`. These amounts are considered upscaled and will
     * be downscaled (rounding up) before being returned to the Vault.
     */
    function _onInitializePool(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory scalingFactors,
        bytes memory userData
    ) internal virtual returns (uint256 bptAmountOut, uint256[] memory amountsIn);

    /**
     * @dev Called whenever the Pool is joined after the first initialization join (see `_onInitializePool`).
     *
     * Returns the amount of BPT to mint, the token amounts that the Pool will receive in return, and the number of
     * tokens to pay in protocol swap fees.
     *
     * Implementations of this function might choose to mutate the `balances` array to save gas (e.g. when
     * performing intermediate calculations, such as subtraction of due protocol fees). This can be done safely.
     *
     * Minted BPT will be sent to `recipient`.
     *
     * The tokens granted to the Pool will be transferred from `sender`. These amounts are considered upscaled and will
     * be downscaled (rounding up) before being returned to the Vault.
     *
     * Due protocol swap fees will be taken from the Pool's balance in the Vault (see `IBasePool.onJoinPool`). These
     * amounts are considered upscaled and will be downscaled (rounding down) before being returned to the Vault.
     */
    function _onJoinPool(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory balances,
        uint256 lastChangeBlock,
        uint256 protocolSwapFeePercentage,
        uint256[] memory scalingFactors,
        bytes memory userData
    ) internal virtual returns (uint256 bptAmountOut, uint256[] memory amountsIn);

    /**
     * @dev Called whenever the Pool is exited.
     *
     * Returns the amount of BPT to burn, the token amounts for each Pool token that the Pool will grant in return, and
     * the number of tokens to pay in protocol swap fees.
     *
     * Implementations of this function might choose to mutate the `balances` array to save gas (e.g. when
     * performing intermediate calculations, such as subtraction of due protocol fees). This can be done safely.
     *
     * BPT will be burnt from `sender`.
     *
     * The Pool will grant tokens to `recipient`. These amounts are considered upscaled and will be downscaled
     * (rounding down) before being returned to the Vault.
     *
     * Due protocol swap fees will be taken from the Pool's balance in the Vault (see `IBasePool.onExitPool`). These
     * amounts are considered upscaled and will be downscaled (rounding down) before being returned to the Vault.
     */
    function _onExitPool(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory balances,
        uint256 lastChangeBlock,
        uint256 protocolSwapFeePercentage,
        uint256[] memory scalingFactors,
        bytes memory userData
    ) internal virtual returns (uint256 bptAmountIn, uint256[] memory amountsOut);

    /**
     * @dev Called at the very beginning of swaps, joins and exits, even before the scaling factors are read. Derived
     * contracts can extend this implementation to perform any state-changing operations they might need (including e.g.
     * updating the scaling factors),
     *
     * The only scenario in which this function is not called is during a recovery mode exit. This makes it safe to
     * perform non-trivial computations or interact with external dependencies here, as recovery mode will not be
     * affected.
     *
     * Since this contract does not implement swaps, derived contracts must also make sure this function is called on
     * swap handlers.
     */
    function _beforeSwapJoinExit() internal virtual {
        // All joins, exits and swaps are disabled (except recovery mode exits).
        _ensureNotPaused();
    }

    // Internal functions

    /**
     * @dev Pays protocol fees by minting `bptAmount` to the Protocol Fee Collector.
     */
    function _payProtocolFees(uint256 bptAmount) internal {
        _mintPoolTokens(address(getProtocolFeesCollector()), bptAmount);
    }

    /**
     * @dev Adds swap fee amount to `amount`, returning a higher value.
     */
    function _addSwapFeeAmount(uint256 amount) internal view returns (uint256) {
        // This returns amount + fee amount, so we round up (favoring a higher fee amount).
        return amount.divUp(getSwapFeePercentage().complement());
    }

    /**
     * @dev Subtracts swap fee amount from `amount`, returning a lower value.
     */
    function _subtractSwapFeeAmount(uint256 amount) internal view returns (uint256) {
        // This returns amount - fee amount, so we round up (favoring a higher fee amount).
        uint256 feeAmount = amount.mulUp(getSwapFeePercentage());
        return amount.sub(feeAmount);
    }

    // Scaling

    /**
     * @dev Returns a scaling factor that, when multiplied to a token amount for `token`, normalizes its balance as if
     * it had 18 decimals.
     */
    function _computeScalingFactor(IERC20 token) internal view returns (uint256) {
        if (address(token) == address(this)) {
            return FixedPoint.ONE;
        }

        // Tokens that don't implement the `decimals` method are not supported.
        uint256 tokenDecimals = ERC20(address(token)).decimals();

        // Tokens with more than 18 decimals are not supported.
        uint256 decimalsDifference = Math.sub(18, tokenDecimals);
        return FixedPoint.ONE * 10**decimalsDifference;
    }

    /**
     * @dev Returns the scaling factor for one of the Pool's tokens. Reverts if `token` is not a token registered by the
     * Pool.
     *
     * All scaling factors are fixed-point values with 18 decimals, to allow for this function to be overridden by
     * derived contracts that need to apply further scaling, making these factors potentially non-integer.
     *
     * The largest 'base' scaling factor (i.e. in tokens with less than 18 decimals) is 10**18, which in fixed-point is
     * 10**36. This value can be multiplied with a 112 bit Vault balance with no overflow by a factor of ~1e7, making
     * even relatively 'large' factors safe to use.
     *
     * The 1e7 figure is the result of 2**256 / (1e18 * 1e18 * 2**112).
     */
    function _scalingFactor(IERC20 token) internal view virtual returns (uint256);

    /**
     * @dev Same as `_scalingFactor()`, except for all registered tokens (in the same order as registered). The Vault
     * will always pass balances in this order when calling any of the Pool hooks.
     */
    function _scalingFactors() internal view virtual returns (uint256[] memory);

    function getScalingFactors() external view override returns (uint256[] memory) {
        return _scalingFactors();
    }

    /**
     * @dev Applies `scalingFactor` to `amount`, resulting in a larger or equal value depending on whether it needed
     * scaling or not.
     */
    function _upscale(uint256 amount, uint256 scalingFactor) internal pure returns (uint256) {
        // Upscale rounding wouldn't necessarily always go in the same direction: in a swap for example the balance of
        // token in should be rounded up, and that of token out rounded down. This is the only place where we round in
        // the same direction for all amounts, as the impact of this rounding is expected to be minimal (and there's no
        // rounding error unless `_scalingFactor()` is overriden).
        return FixedPoint.mulDown(amount, scalingFactor);
    }

    /**
     * @dev Same as `_upscale`, but for an entire array. This function does not return anything, but instead *mutates*
     * the `amounts` array.
     */
    function _upscaleArray(uint256[] memory amounts, uint256[] memory scalingFactors) internal pure {
        uint256 length = amounts.length;
        InputHelpers.ensureInputLengthMatch(length, scalingFactors.length);

        for (uint256 i = 0; i < length; ++i) {
            amounts[i] = FixedPoint.mulDown(amounts[i], scalingFactors[i]);
        }
    }

    /**
     * @dev Reverses the `scalingFactor` applied to `amount`, resulting in a smaller or equal value depending on
     * whether it needed scaling or not. The result is rounded down.
     */
    function _downscaleDown(uint256 amount, uint256 scalingFactor) internal pure returns (uint256) {
        return FixedPoint.divDown(amount, scalingFactor);
    }

    /**
     * @dev Same as `_downscaleDown`, but for an entire array. This function does not return anything, but instead
     * *mutates* the `amounts` array.
     */
    function _downscaleDownArray(uint256[] memory amounts, uint256[] memory scalingFactors) internal pure {
        uint256 length = amounts.length;
        InputHelpers.ensureInputLengthMatch(length, scalingFactors.length);

        for (uint256 i = 0; i < length; ++i) {
            amounts[i] = FixedPoint.divDown(amounts[i], scalingFactors[i]);
        }
    }

    /**
     * @dev Reverses the `scalingFactor` applied to `amount`, resulting in a smaller or equal value depending on
     * whether it needed scaling or not. The result is rounded up.
     */
    function _downscaleUp(uint256 amount, uint256 scalingFactor) internal pure returns (uint256) {
        return FixedPoint.divUp(amount, scalingFactor);
    }

    /**
     * @dev Same as `_downscaleUp`, but for an entire array. This function does not return anything, but instead
     * *mutates* the `amounts` array.
     */
    function _downscaleUpArray(uint256[] memory amounts, uint256[] memory scalingFactors) internal pure {
        uint256 length = amounts.length;
        InputHelpers.ensureInputLengthMatch(length, scalingFactors.length);

        for (uint256 i = 0; i < length; ++i) {
            amounts[i] = FixedPoint.divUp(amounts[i], scalingFactors[i]);
        }
    }

    function _getAuthorizer() internal view override returns (IAuthorizer) {
        // Access control management is delegated to the Vault's Authorizer. This lets Balancer Governance manage which
        // accounts can call permissioned functions: for example, to perform emergency pauses.
        // If the owner is delegated, then *all* permissioned functions, including `setSwapFeePercentage`, will be under
        // Governance control.
        return getVault().getAuthorizer();
    }

    function _queryAction(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory balances,
        uint256 lastChangeBlock,
        uint256 protocolSwapFeePercentage,
        bytes memory userData,
        function(bytes32, address, address, uint256[] memory, uint256, uint256, uint256[] memory, bytes memory)
            internal
            returns (uint256, uint256[] memory) _action,
        function(uint256[] memory, uint256[] memory) internal view _downscaleArray
    ) private {
        // This uses the same technique used by the Vault in queryBatchSwap. Refer to that function for a detailed
        // explanation.

        if (msg.sender != address(this)) {
            // We perform an external call to ourselves, forwarding the same calldata. In this call, the else clause of
            // the preceding if statement will be executed instead.

            // solhint-disable-next-line avoid-low-level-calls
            (bool success, ) = address(this).call(msg.data);

            // solhint-disable-next-line no-inline-assembly
            assembly {
                // This call should always revert to decode the bpt and token amounts from the revert reason
                switch success
                    case 0 {
                        // Note we are manually writing the memory slot 0. We can safely overwrite whatever is
                        // stored there as we take full control of the execution and then immediately return.

                        // We copy the first 4 bytes to check if it matches with the expected signature, otherwise
                        // there was another revert reason and we should forward it.
                        returndatacopy(0, 0, 0x04)
                        let error := and(mload(0), 0xffffffff00000000000000000000000000000000000000000000000000000000)

                        // If the first 4 bytes don't match with the expected signature, we forward the revert reason.
                        if eq(eq(error, 0x43adbafb00000000000000000000000000000000000000000000000000000000), 0) {
                            returndatacopy(0, 0, returndatasize())
                            revert(0, returndatasize())
                        }

                        // The returndata contains the signature, followed by the raw memory representation of the
                        // `bptAmount` and `tokenAmounts` (array: length + data). We need to return an ABI-encoded
                        // representation of these.
                        // An ABI-encoded response will include one additional field to indicate the starting offset of
                        // the `tokenAmounts` array. The `bptAmount` will be laid out in the first word of the
                        // returndata.
                        //
                        // In returndata:
                        // [ signature ][ bptAmount ][ tokenAmounts length ][ tokenAmounts values ]
                        // [  4 bytes  ][  32 bytes ][       32 bytes      ][ (32 * length) bytes ]
                        //
                        // We now need to return (ABI-encoded values):
                        // [ bptAmount ][ tokeAmounts offset ][ tokenAmounts length ][ tokenAmounts values ]
                        // [  32 bytes ][       32 bytes     ][       32 bytes      ][ (32 * length) bytes ]

                        // We copy 32 bytes for the `bptAmount` from returndata into memory.
                        // Note that we skip the first 4 bytes for the error signature
                        returndatacopy(0, 0x04, 32)

                        // The offsets are 32-bytes long, so the array of `tokenAmounts` will start after
                        // the initial 64 bytes.
                        mstore(0x20, 64)

                        // We now copy the raw memory array for the `tokenAmounts` from returndata into memory.
                        // Since bpt amount and offset take up 64 bytes, we start copying at address 0x40. We also
                        // skip the first 36 bytes from returndata, which correspond to the signature plus bpt amount.
                        returndatacopy(0x40, 0x24, sub(returndatasize(), 36))

                        // We finally return the ABI-encoded uint256 and the array, which has a total length equal to
                        // the size of returndata, plus the 32 bytes of the offset but without the 4 bytes of the
                        // error signature.
                        return(0, add(returndatasize(), 28))
                    }
                    default {
                        // This call should always revert, but we fail nonetheless if that didn't happen
                        invalid()
                    }
            }
        } else {
            // This imitates the relevant parts of the bodies of onJoin and onExit. Since they're not virtual, we know
            // that their implementations will match this regardless of what derived contracts might do.

            _beforeSwapJoinExit();

            uint256[] memory scalingFactors = _scalingFactors();
            _upscaleArray(balances, scalingFactors);

            (uint256 bptAmount, uint256[] memory tokenAmounts) = _action(
                poolId,
                sender,
                recipient,
                balances,
                lastChangeBlock,
                protocolSwapFeePercentage,
                scalingFactors,
                userData
            );

            _downscaleArray(tokenAmounts, scalingFactors);

            // solhint-disable-next-line no-inline-assembly
            assembly {
                // We will return a raw representation of `bptAmount` and `tokenAmounts` in memory, which is composed of
                // a 32-byte uint256, followed by a 32-byte for the array length, and finally the 32-byte uint256 values
                // Because revert expects a size in bytes, we multiply the array length (stored at `tokenAmounts`) by 32
                let size := mul(mload(tokenAmounts), 32)

                // We store the `bptAmount` in the previous slot to the `tokenAmounts` array. We can make sure there
                // will be at least one available slot due to how the memory scratch space works.
                // We can safely overwrite whatever is stored in this slot as we will revert immediately after that.
                let start := sub(tokenAmounts, 0x20)
                mstore(start, bptAmount)

                // We send one extra value for the error signature "QueryError(uint256,uint256[])" which is 0x43adbafb
                // We use the previous slot to `bptAmount`.
                mstore(sub(start, 0x20), 0x0000000000000000000000000000000000000000000000000000000043adbafb)
                start := sub(start, 0x04)

                // When copying from `tokenAmounts` into returndata, we copy the additional 68 bytes to also return
                // the `bptAmount`, the array 's length, and the error signature.
                revert(start, add(size, 68))
            }
        }
    }
}

// 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 "./IVault.sol";
import "./IPoolSwapStructs.sol";

/**
 * @dev Interface for adding and removing liquidity that all Pool contracts should implement. Note that this is not
 * the complete Pool contract interface, as it is missing the swap hooks. Pool contracts should also inherit from
 * either IGeneralPool or IMinimalSwapInfoPool
 */
interface IBasePool is IPoolSwapStructs {
    /**
     * @dev Called by the Vault when a user calls `IVault.joinPool` to add liquidity to this Pool. Returns how many of
     * each registered token the user should provide, as well as the amount of protocol fees the Pool owes to the Vault.
     * The Vault will then take tokens from `sender` and add them to the Pool's balances, as well as collect
     * the reported amount in protocol fees, which the pool should calculate based on `protocolSwapFeePercentage`.
     *
     * Protocol fees are reported and charged on join events so that the Pool is free of debt whenever new users join.
     *
     * `sender` is the account performing the join (from which tokens will be withdrawn), and `recipient` is the account
     * designated to receive any benefits (typically pool shares). `balances` contains the total balances
     * for each token the Pool registered in the Vault, in the same order that `IVault.getPoolTokens` would return.
     *
     * `lastChangeBlock` is the last block in which *any* of the Pool's registered tokens last changed its total
     * balance.
     *
     * `userData` contains any pool-specific instructions needed to perform the calculations, such as the type of
     * join (e.g., proportional given an amount of pool shares, single-asset, multi-asset, etc.)
     *
     * Contracts implementing this function should check that the caller is indeed the Vault before performing any
     * state-changing operations, such as minting pool shares.
     */
    function onJoinPool(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory balances,
        uint256 lastChangeBlock,
        uint256 protocolSwapFeePercentage,
        bytes memory userData
    ) external returns (uint256[] memory amountsIn, uint256[] memory dueProtocolFeeAmounts);

    /**
     * @dev Called by the Vault when a user calls `IVault.exitPool` to remove liquidity from this Pool. Returns how many
     * tokens the Vault should deduct from the Pool's balances, as well as the amount of protocol fees the Pool owes
     * to the Vault. The Vault will then take tokens from the Pool's balances and send them to `recipient`,
     * as well as collect the reported amount in protocol fees, which the Pool should calculate based on
     * `protocolSwapFeePercentage`.
     *
     * Protocol fees are charged on exit events to guarantee that users exiting the Pool have paid their share.
     *
     * `sender` is the account performing the exit (typically the pool shareholder), and `recipient` is the account
     * to which the Vault will send the proceeds. `balances` contains the total token balances for each token
     * the Pool registered in the Vault, in the same order that `IVault.getPoolTokens` would return.
     *
     * `lastChangeBlock` is the last block in which *any* of the Pool's registered tokens last changed its total
     * balance.
     *
     * `userData` contains any pool-specific instructions needed to perform the calculations, such as the type of
     * exit (e.g., proportional given an amount of pool shares, single-asset, multi-asset, etc.)
     *
     * Contracts implementing this function should check that the caller is indeed the Vault before performing any
     * state-changing operations, such as burning pool shares.
     */
    function onExitPool(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory balances,
        uint256 lastChangeBlock,
        uint256 protocolSwapFeePercentage,
        bytes memory userData
    ) external returns (uint256[] memory amountsOut, uint256[] memory dueProtocolFeeAmounts);

    /**
     * @dev Returns this Pool's ID, used when interacting with the Vault (to e.g. join the Pool or swap with it).
     */
    function getPoolId() external view returns (bytes32);

    /**
     * @dev Returns the current swap fee percentage as a 18 decimal fixed point number, so e.g. 1e17 corresponds to a
     * 10% swap fee.
     */
    function getSwapFeePercentage() external view returns (uint256);

    /**
     * @dev Returns the scaling factors of each of the Pool's tokens. This is an implementation detail that is typically
     * not relevant for outside parties, but which might be useful for some types of Pools.
     */
    function getScalingFactors() external view returns (uint256[] memory);

    function queryJoin(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory balances,
        uint256 lastChangeBlock,
        uint256 protocolSwapFeePercentage,
        bytes memory userData
    ) external returns (uint256 bptOut, uint256[] memory amountsIn);

    function queryExit(
        bytes32 poolId,
        address sender,
        address recipient,
        uint256[] memory balances,
        uint256 lastChangeBlock,
        uint256 protocolSwapFeePercentage,
        bytes memory userData
    ) external returns (uint256 bptIn, uint256[] memory amountsOut);
}

// 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 experimental ABIEncoderV2;

import "../solidity-utils/openzeppelin/IERC20.sol";
import "../solidity-utils/helpers/IAuthentication.sol";
import "../solidity-utils/helpers/ISignaturesValidator.sol";
import "../solidity-utils/helpers/ITemporarilyPausable.sol";
import "../solidity-utils/misc/IWETH.sol";

import "./IAsset.sol";
import "./IAuthorizer.sol";
import "./IFlashLoanRecipient.sol";
import "./IProtocolFeesCollector.sol";

pragma solidity ^0.7.0;

/**
 * @dev Full external interface for the Vault core contract - no external or public methods exist in the contract that
 * don't override one of these declarations.
 */
interface IVault is ISignaturesValidator, ITemporarilyPausable, IAuthentication {
    // Generalities about the Vault:
    //
    // - Whenever documentation refers to 'tokens', it strictly refers to ERC20-compliant token contracts. Tokens are
    // transferred out of the Vault by calling the `IERC20.transfer` function, and transferred in by calling
    // `IERC20.transferFrom`. In these cases, the sender must have previously allowed the Vault to use their tokens by
    // calling `IERC20.approve`. The only deviation from the ERC20 standard that is supported is functions not returning
    // a boolean value: in these scenarios, a non-reverting call is assumed to be successful.
    //
    // - All non-view functions in the Vault are non-reentrant: calling them while another one is mid-execution (e.g.
    // while execution control is transferred to a token contract during a swap) will result in a revert. View
    // functions can be called in a re-reentrant way, but doing so might cause them to return inconsistent results.
    // Contracts calling view functions in the Vault must make sure the Vault has not already been entered.
    //
    // - View functions revert if referring to either unregistered Pools, or unregistered tokens for registered Pools.

    // Authorizer
    //
    // Some system actions are permissioned, like setting and collecting protocol fees. This permissioning system exists
    // outside of the Vault in the Authorizer contract: the Vault simply calls the Authorizer to check if the caller
    // can perform a given action.

    /**
     * @dev Returns the Vault's Authorizer.
     */
    function getAuthorizer() external view returns (IAuthorizer);

    /**
     * @dev Sets a new Authorizer for the Vault. The caller must be allowed by the current Authorizer to do this.
     *
     * Emits an `AuthorizerChanged` event.
     */
    function setAuthorizer(IAuthorizer newAuthorizer) external;

    /**
     * @dev Emitted when a new authorizer is set by `setAuthorizer`.
     */
    event AuthorizerChanged(IAuthorizer indexed newAuthorizer);

    // Relayers
    //
    // Additionally, it is possible for an account to perform certain actions on behalf of another one, using their
    // Vault ERC20 allowance and Internal Balance. These accounts are said to be 'relayers' for these Vault functions,
    // and are expected to be smart contracts with sound authentication mechanisms. For an account to be able to wield
    // this power, two things must occur:
    //  - The Authorizer must grant the account the permission to be a relayer for the relevant Vault function. This
    //    means that Balancer governance must approve each individual contract to act as a relayer for the intended
    //    functions.
    //  - Each user must approve the relayer to act on their behalf.
    // This double protection means users cannot be tricked into approving malicious relayers (because they will not
    // have been allowed by the Authorizer via governance), nor can malicious relayers approved by a compromised
    // Authorizer or governance drain user funds, since they would also need to be approved by each individual user.

    /**
     * @dev Returns true if `user` has approved `relayer` to act as a relayer for them.
     */
    function hasApprovedRelayer(address user, address relayer) external view returns (bool);

    /**
     * @dev Allows `relayer` to act as a relayer for `sender` if `approved` is true, and disallows it otherwise.
     *
     * Emits a `RelayerApprovalChanged` event.
     */
    function setRelayerApproval(
        address sender,
        address relayer,
        bool approved
    ) external;

    /**
     * @dev Emitted every time a relayer is approved or disapproved by `setRelayerApproval`.
     */
    event RelayerApprovalChanged(address indexed relayer, address indexed sender, bool approved);

    // Internal Balance
    //
    // Users can deposit tokens into the Vault, where they are allocated to their Internal Balance, and later
    // transferred or withdrawn. It can also be used as a source of tokens when joining Pools, as a destination
    // when exiting them, and as either when performing swaps. This usage of Internal Balance results in greatly reduced
    // gas costs when compared to relying on plain ERC20 transfers, leading to large savings for frequent users.
    //
    // Internal Balance management features batching, which means a single contract call can be used to perform multiple
    // operations of different kinds, with different senders and recipients, at once.

    /**
     * @dev Returns `user`'s Internal Balance for a set of tokens.
     */
    function getInternalBalance(address user, IERC20[] memory tokens) external view returns (uint256[] memory);

    /**
     * @dev Performs a set of user balance operations, which involve Internal Balance (deposit, withdraw or transfer)
     * and plain ERC20 transfers using the Vault's allowance. This last feature is particularly useful for relayers, as
     * it lets integrators reuse a user's Vault allowance.
     *
     * For each operation, if the caller is not `sender`, it must be an authorized relayer for them.
     */
    function manageUserBalance(UserBalanceOp[] memory ops) external payable;

    /**
     * @dev Data for `manageUserBalance` operations, which include the possibility for ETH to be sent and received
     without manual WETH wrapping or unwrapping.
     */
    struct UserBalanceOp {
        UserBalanceOpKind kind;
        IAsset asset;
        uint256 amount;
        address sender;
        address payable recipient;
    }

    // There are four possible operations in `manageUserBalance`:
    //
    // - DEPOSIT_INTERNAL
    // Increases the Internal Balance of the `recipient` account by transferring tokens from the corresponding
    // `sender`. The sender must have allowed the Vault to use their tokens via `IERC20.approve()`.
    //
    // ETH can be used by passing the ETH sentinel value as the asset and forwarding ETH in the call: it will be wrapped
    // and deposited as WETH. Any ETH amount remaining will be sent back to the caller (not the sender, which is
    // relevant for relayers).
    //
    // Emits an `InternalBalanceChanged` event.
    //
    //
    // - WITHDRAW_INTERNAL
    // Decreases the Internal Balance of the `sender` account by transferring tokens to the `recipient`.
    //
    // ETH can be used by passing the ETH sentinel value as the asset. This will deduct WETH instead, unwrap it and send
    // it to the recipient as ETH.
    //
    // Emits an `InternalBalanceChanged` event.
    //
    //
    // - TRANSFER_INTERNAL
    // Transfers tokens from the Internal Balance of the `sender` account to the Internal Balance of `recipient`.
    //
    // Reverts if the ETH sentinel value is passed.
    //
    // Emits an `InternalBalanceChanged` event.
    //
    //
    // - TRANSFER_EXTERNAL
    // Transfers tokens from `sender` to `recipient`, using the Vault's ERC20 allowance. This is typically used by
    // relayers, as it lets them reuse a user's Vault allowance.
    //
    // Reverts if the ETH sentinel value is passed.
    //
    // Emits an `ExternalBalanceTransfer` event.

    enum UserBalanceOpKind { DEPOSIT_INTERNAL, WITHDRAW_INTERNAL, TRANSFER_INTERNAL, TRANSFER_EXTERNAL }

    /**
     * @dev Emitted when a user's Internal Balance changes, either from calls to `manageUserBalance`, or through
     * interacting with Pools using Internal Balance.
     *
     * Because Internal Balance works exclusively with ERC20 tokens, ETH deposits and withdrawals will use the WETH
     * address.
     */
    event InternalBalanceChanged(address indexed user, IERC20 indexed token, int256 delta);

    /**
     * @dev Emitted when a user's Vault ERC20 allowance is used by the Vault to transfer tokens to an external account.
     */
    event ExternalBalanceTransfer(IERC20 indexed token, address indexed sender, address recipient, uint256 amount);

    // Pools
    //
    // There are three specialization settings for Pools, which allow for cheaper swaps at the cost of reduced
    // functionality:
    //
    //  - General: no specialization, suited for all Pools. IGeneralPool is used for swap request callbacks, passing the
    // balance of all tokens in the Pool. These Pools have the largest swap costs (because of the extra storage reads),
    // which increase with the number of registered tokens.
    //
    //  - Minimal Swap Info: IMinimalSwapInfoPool is used instead of IGeneralPool, which saves gas by only passing the
    // balance of the two tokens involved in the swap. This is suitable for some pricing algorithms, like the weighted
    // constant product one popularized by Balancer V1. Swap costs are smaller compared to general Pools, and are
    // independent of the number of registered tokens.
    //
    //  - Two Token: only allows two tokens to be registered. This achieves the lowest possible swap gas cost. Like
    // minimal swap info Pools, these are called via IMinimalSwapInfoPool.

    enum PoolSpecialization { GENERAL, MINIMAL_SWAP_INFO, TWO_TOKEN }

    /**
     * @dev Registers the caller account as a Pool with a given specialization setting. Returns the Pool's ID, which
     * is used in all Pool-related functions. Pools cannot be deregistered, nor can the Pool's specialization be
     * changed.
     *
     * The caller is expected to be a smart contract that implements either `IGeneralPool` or `IMinimalSwapInfoPool`,
     * depending on the chosen specialization setting. This contract is known as the Pool's contract.
     *
     * Note that the same contract may register itself as multiple Pools with unique Pool IDs, or in other words,
     * multiple Pools may share the same contract.
     *
     * Emits a `PoolRegistered` event.
     */
    function registerPool(PoolSpecialization specialization) external returns (bytes32);

    /**
     * @dev Emitted when a Pool is registered by calling `registerPool`.
     */
    event PoolRegistered(bytes32 indexed poolId, address indexed poolAddress, PoolSpecialization specialization);

    /**
     * @dev Returns a Pool's contract address and specialization setting.
     */
    function getPool(bytes32 poolId) external view returns (address, PoolSpecialization);

    /**
     * @dev Registers `tokens` for the `poolId` Pool. Must be called by the Pool's contract.
     *
     * Pools can only interact with tokens they have registered. Users join a Pool by transferring registered tokens,
     * exit by receiving registered tokens, and can only swap registered tokens.
     *
     * Each token can only be registered once. For Pools with the Two Token specialization, `tokens` must have a length
     * of two, that is, both tokens must be registered in the same `registerTokens` call, and they must be sorted in
     * ascending order.
     *
     * The `tokens` and `assetManagers` arrays must have the same length, and each entry in these indicates the Asset
     * Manager for the corresponding token. Asset Managers can manage a Pool's tokens via `managePoolBalance`,
     * depositing and withdrawing them directly, and can even set their balance to arbitrary amounts. They are therefore
     * expected to be highly secured smart contracts with sound design principles, and the decision to register an
     * Asset Manager should not be made lightly.
     *
     * Pools can choose not to assign an Asset Manager to a given token by passing in the zero address. Once an Asset
     * Manager is set, it cannot be changed except by deregistering the associated token and registering again with a
     * different Asset Manager.
     *
     * Emits a `TokensRegistered` event.
     */
    function registerTokens(
        bytes32 poolId,
        IERC20[] memory tokens,
        address[] memory assetManagers
    ) external;

    /**
     * @dev Emitted when a Pool registers tokens by calling `registerTokens`.
     */
    event TokensRegistered(bytes32 indexed poolId, IERC20[] tokens, address[] assetManagers);

    /**
     * @dev Deregisters `tokens` for the `poolId` Pool. Must be called by the Pool's contract.
     *
     * Only registered tokens (via `registerTokens`) can be deregistered. Additionally, they must have zero total
     * balance. For Pools with the Two Token specialization, `tokens` must have a length of two, that is, both tokens
     * must be deregistered in the same `deregisterTokens` call.
     *
     * A deregistered token can be re-registered later on, possibly with a different Asset Manager.
     *
     * Emits a `TokensDeregistered` event.
     */
    function deregisterTokens(bytes32 poolId, IERC20[] memory tokens) external;

    /**
     * @dev Emitted when a Pool deregisters tokens by calling `deregisterTokens`.
     */
    event TokensDeregistered(bytes32 indexed poolId, IERC20[] tokens);

    /**
     * @dev Returns detailed information for a Pool's registered token.
     *
     * `cash` is the number of tokens the Vault currently holds for the Pool. `managed` is the number of tokens
     * withdrawn and held outside the Vault by the Pool's token Asset Manager. The Pool's total balance for `token`
     * equals the sum of `cash` and `managed`.
     *
     * Internally, `cash` and `managed` are stored using 112 bits. No action can ever cause a Pool's token `cash`,
     * `managed` or `total` balance to be greater than 2^112 - 1.
     *
     * `lastChangeBlock` is the number of the block in which `token`'s total balance was last modified (via either a
     * join, exit, swap, or Asset Manager update). This value is useful to avoid so-called 'sandwich attacks', for
     * example when developing price oracles. A change of zero (e.g. caused by a swap with amount zero) is considered a
     * change for this purpose, and will update `lastChangeBlock`.
     *
     * `assetManager` is the Pool's token Asset Manager.
     */
    function getPoolTokenInfo(bytes32 poolId, IERC20 token)
        external
        view
        returns (
            uint256 cash,
            uint256 managed,
            uint256 lastChangeBlock,
            address assetManager
        );

    /**
     * @dev Returns a Pool's registered tokens, the total balance for each, and the latest block when *any* of
     * the tokens' `balances` changed.
     *
     * The order of the `tokens` array is the same order that will be used in `joinPool`, `exitPool`, as well as in all
     * Pool hooks (where applicable). Calls to `registerTokens` and `deregisterTokens` may change this order.
     *
     * If a Pool only registers tokens once, and these are sorted in ascending order, they will be stored in the same
     * order as passed to `registerTokens`.
     *
     * Total balances include both tokens held by the Vault and those withdrawn by the Pool's Asset Managers. These are
     * the amounts used by joins, exits and swaps. For a detailed breakdown of token balances, use `getPoolTokenInfo`
     * instead.
     */
    function getPoolTokens(bytes32 poolId)
        external
        view
        returns (
            IERC20[] memory tokens,
            uint256[] memory balances,
            uint256 lastChangeBlock
        );

    /**
     * @dev Called by users to join a Pool, which transfers tokens from `sender` into the Pool's balance. This will
     * trigger custom Pool behavior, which will typically grant something in return to `recipient` - often tokenized
     * Pool shares.
     *
     * If the caller is not `sender`, it must be an authorized relayer for them.
     *
     * The `assets` and `maxAmountsIn` arrays must have the same length, and each entry indicates the maximum amount
     * to send for each asset. The amounts to send are decided by the Pool and not the Vault: it just enforces
     * these maximums.
     *
     * If joining a Pool that holds WETH, it is possible to send ETH directly: the Vault will do the wrapping. To enable
     * this mechanism, the IAsset sentinel value (the zero address) must be passed in the `assets` array instead of the
     * WETH address. Note that it is not possible to combine ETH and WETH in the same join. Any excess ETH will be sent
     * back to the caller (not the sender, which is important for relayers).
     *
     * `assets` must have the same length and order as the array returned by `getPoolTokens`. This prevents issues when
     * interacting with Pools that register and deregister tokens frequently. If sending ETH however, the array must be
     * sorted *before* replacing the WETH address with the ETH sentinel value (the zero address), which means the final
     * `assets` array might not be sorted. Pools with no registered tokens cannot be joined.
     *
     * If `fromInternalBalance` is true, the caller's Internal Balance will be preferred: ERC20 transfers will only
     * be made for the difference between the requested amount and Internal Balance (if any). Note that ETH cannot be
     * withdrawn from Internal Balance: attempting to do so will trigger a revert.
     *
     * This causes the Vault to call the `IBasePool.onJoinPool` hook on the Pool's contract, where Pools implement
     * their own custom logic. This typically requires additional information from the user (such as the expected number
     * of Pool shares). This can be encoded in the `userData` argument, which is ignored by the Vault and passed
     * directly to the Pool's contract, as is `recipient`.
     *
     * Emits a `PoolBalanceChanged` event.
     */
    function joinPool(
        bytes32 poolId,
        address sender,
        address recipient,
        JoinPoolRequest memory request
    ) external payable;

    struct JoinPoolRequest {
        IAsset[] assets;
        uint256[] maxAmountsIn;
        bytes userData;
        bool fromInternalBalance;
    }

    /**
     * @dev Called by users to exit a Pool, which transfers tokens from the Pool's balance to `recipient`. This will
     * trigger custom Pool behavior, which will typically ask for something in return from `sender` - often tokenized
     * Pool shares. The amount of tokens that can be withdrawn is limited by the Pool's `cash` balance (see
     * `getPoolTokenInfo`).
     *
     * If the caller is not `sender`, it must be an authorized relayer for them.
     *
     * The `tokens` and `minAmountsOut` arrays must have the same length, and each entry in these indicates the minimum
     * token amount to receive for each token contract. The amounts to send are decided by the Pool and not the Vault:
     * it just enforces these minimums.
     *
     * If exiting a Pool that holds WETH, it is possible to receive ETH directly: the Vault will do the unwrapping. To
     * enable this mechanism, the IAsset sentinel value (the zero address) must be passed in the `assets` array instead
     * of the WETH address. Note that it is not possible to combine ETH and WETH in the same exit.
     *
     * `assets` must have the same length and order as the array returned by `getPoolTokens`. This prevents issues when
     * interacting with Pools that register and deregister tokens frequently. If receiving ETH however, the array must
     * be sorted *before* replacing the WETH address with the ETH sentinel value (the zero address), which means the
     * final `assets` array might not be sorted. Pools with no registered tokens cannot be exited.
     *
     * If `toInternalBalance` is true, the tokens will be deposited to `recipient`'s Internal Balance. Otherwise,
     * an ERC20 transfer will be performed. Note that ETH cannot be deposited to Internal Balance: attempting to
     * do so will trigger a revert.
     *
     * `minAmountsOut` is the minimum amount of tokens the user expects to get out of the Pool, for each token in the
     * `tokens` array. This array must match the Pool's registered tokens.
     *
     * This causes the Vault to call the `IBasePool.onExitPool` hook on the Pool's contract, where Pools implement
     * their own custom logic. This typically requires additional information from the user (such as the expected number
     * of Pool shares to return). This can be encoded in the `userData` argument, which is ignored by the Vault and
     * passed directly to the Pool's contract.
     *
     * Emits a `PoolBalanceChanged` event.
     */
    function exitPool(
        bytes32 poolId,
        address sender,
        address payable recipient,
        ExitPoolRequest memory request
    ) external;

    struct ExitPoolRequest {
        IAsset[] assets;
        uint256[] minAmountsOut;
        bytes userData;
        bool toInternalBalance;
    }

    /**
     * @dev Emitted when a user joins or exits a Pool by calling `joinPool` or `exitPool`, respectively.
     */
    event PoolBalanceChanged(
        bytes32 indexed poolId,
        address indexed liquidityProvider,
        IERC20[] tokens,
        int256[] deltas,
        uint256[] protocolFeeAmounts
    );

    enum PoolBalanceChangeKind { JOIN, EXIT }

    // Swaps
    //
    // Users can swap tokens with Pools by calling the `swap` and `batchSwap` functions. To do this,
    // they need not trust Pool contracts in any way: all security checks are made by the Vault. They must however be
    // aware of the Pools' pricing algorithms in order to estimate the prices Pools will quote.
    //
    // The `swap` function executes a single swap, while `batchSwap` can perform multiple swaps in sequence.
    // In each individual swap, tokens of one kind are sent from the sender to the Pool (this is the 'token in'),
    // and tokens of another kind are sent from the Pool to the recipient in exchange (this is the 'token out').
    // More complex swaps, such as one token in to multiple tokens out can be achieved by batching together
    // individual swaps.
    //
    // There are two swap kinds:
    //  - 'given in' swaps, where the amount of tokens in (sent to the Pool) is known, and the Pool determines (via the
    // `onSwap` hook) the amount of tokens out (to send to the recipient).
    //  - 'given out' swaps, where the amount of tokens out (received from the Pool) is known, and the Pool determines
    // (via the `onSwap` hook) the amount of tokens in (to receive from the sender).
    //
    // Additionally, it is possible to chain swaps using a placeholder input amount, which the Vault replaces with
    // the calculated output of the previous swap. If the previous swap was 'given in', this will be the calculated
    // tokenOut amount. If the previous swap was 'given out', it will use the calculated tokenIn amount. These extended
    // swaps are known as 'multihop' swaps, since they 'hop' through a number of intermediate tokens before arriving at
    // the final intended token.
    //
    // In all cases, tokens are only transferred in and out of the Vault (or withdrawn from and deposited into Internal
    // Balance) after all individual swaps have been completed, and the net token balance change computed. This makes
    // certain swap patterns, such as multihops, or swaps that interact with the same token pair in multiple Pools, cost
    // much less gas than they would otherwise.
    //
    // It also means that under certain conditions it is possible to perform arbitrage by swapping with multiple
    // Pools in a way that results in net token movement out of the Vault (profit), with no tokens being sent in (only
    // updating the Pool's internal accounting).
    //
    // To protect users from front-running or the market changing rapidly, they supply a list of 'limits' for each token
    // involved in the swap, where either the maximum number of tokens to send (by passing a positive value) or the
    // minimum amount of tokens to receive (by passing a negative value) is specified.
    //
    // Additionally, a 'deadline' timestamp can also be provided, forcing the swap to fail if it occurs after
    // this point in time (e.g. if the transaction failed to be included in a block promptly).
    //
    // If interacting with Pools that hold WETH, it is possible to both send and receive ETH directly: the Vault will do
    // the wrapping and unwrapping. To enable this mechanism, the IAsset sentinel value (the zero address) must be
    // passed in the `assets` array instead of the WETH address. Note that it is possible to combine ETH and WETH in the
    // same swap. Any excess ETH will be sent back to the caller (not the sender, which is relevant for relayers).
    //
    // Finally, Internal Balance can be used when either sending or receiving tokens.

    enum SwapKind { GIVEN_IN, GIVEN_OUT }

    /**
     * @dev Performs a swap with a single Pool.
     *
     * If the swap is 'given in' (the number of tokens to send to the Pool is known), it returns the amount of tokens
     * taken from the Pool, which must be greater than or equal to `limit`.
     *
     * If the swap is 'given out' (the number of tokens to take from the Pool is known), it returns the amount of tokens
     * sent to the Pool, which must be less than or equal to `limit`.
     *
     * Internal Balance usage and the recipient are determined by the `funds` struct.
     *
     * Emits a `Swap` event.
     */
    function swap(
        SingleSwap memory singleSwap,
        FundManagement memory funds,
        uint256 limit,
        uint256 deadline
    ) external payable returns (uint256);

    /**
     * @dev Data for a single swap executed by `swap`. `amount` is either `amountIn` or `amountOut` depending on
     * the `kind` value.
     *
     * `assetIn` and `assetOut` are either token addresses, or the IAsset sentinel value for ETH (the zero address).
     * Note that Pools never interact with ETH directly: it will be wrapped to or unwrapped from WETH by the Vault.
     *
     * The `userData` field is ignored by the Vault, but forwarded to the Pool in the `onSwap` hook, and may be
     * used to extend swap behavior.
     */
    struct SingleSwap {
        bytes32 poolId;
        SwapKind kind;
        IAsset assetIn;
        IAsset assetOut;
        uint256 amount;
        bytes userData;
    }

    /**
     * @dev Performs a series of swaps with one or multiple Pools. In each individual swap, the caller determines either
     * the amount of tokens sent to or received from the Pool, depending on the `kind` value.
     *
     * Returns an array with the net Vault asset balance deltas. Positive amounts represent tokens (or ETH) sent to the
     * Vault, and negative amounts represent tokens (or ETH) sent by the Vault. Each delta corresponds to the asset at
     * the same index in the `assets` array.
     *
     * Swaps are executed sequentially, in the order specified by the `swaps` array. Each array element describes a
     * Pool, the token to be sent to this Pool, the token to receive from it, and an amount that is either `amountIn` or
     * `amountOut` depending on the swap kind.
     *
     * Multihop swaps can be executed by passing an `amount` value of zero for a swap. This will cause the amount in/out
     * of the previous swap to be used as the amount in for the current one. In a 'given in' swap, 'tokenIn' must equal
     * the previous swap's `tokenOut`. For a 'given out' swap, `tokenOut` must equal the previous swap's `tokenIn`.
     *
     * The `assets` array contains the addresses of all assets involved in the swaps. These are either token addresses,
     * or the IAsset sentinel value for ETH (the zero address). Each entry in the `swaps` array specifies tokens in and
     * out by referencing an index in `assets`. Note that Pools never interact with ETH directly: it will be wrapped to
     * or unwrapped from WETH by the Vault.
     *
     * Internal Balance usage, sender, and recipient are determined by the `funds` struct. The `limits` array specifies
     * the minimum or maximum amount of each token the vault is allowed to transfer.
     *
     * `batchSwap` can be used to make a single swap, like `swap` does, but doing so requires more gas than the
     * equivalent `swap` call.
     *
     * Emits `Swap` events.
     */
    function batchSwap(
        SwapKind kind,
        BatchSwapStep[] memory swaps,
        IAsset[] memory assets,
        FundManagement memory funds,
        int256[] memory limits,
        uint256 deadline
    ) external payable returns (int256[] memory);

    /**
     * @dev Data for each individual swap executed by `batchSwap`. The asset in and out fields are indexes into the
     * `assets` array passed to that function, and ETH assets are converted to WETH.
     *
     * If `amount` is zero, the multihop mechanism is used to determine the actual amount based on the amount in/out
     * from the previous swap, depending on the swap kind.
     *
     * The `userData` field is ignored by the Vault, but forwarded to the Pool in the `onSwap` hook, and may be
     * used to extend swap behavior.
     */
    struct BatchSwapStep {
        bytes32 poolId;
        uint256 assetInIndex;
        uint256 assetOutIndex;
        uint256 amount;
        bytes userData;
    }

    /**
     * @dev Emitted for each individual swap performed by `swap` or `batchSwap`.
     */
    event Swap(
        bytes32 indexed poolId,
        IERC20 indexed tokenIn,
        IERC20 indexed tokenOut,
        uint256 amountIn,
        uint256 amountOut
    );

    /**
     * @dev All tokens in a swap are either sent from the `sender` account to the Vault, or from the Vault to the
     * `recipient` account.
     *
     * If the caller is not `sender`, it must be an authorized relayer for them.
     *
     * If `fromInternalBalance` is true, the `sender`'s Internal Balance will be preferred, performing an ERC20
     * transfer for the difference between the requested amount and the User's Internal Balance (if any). The `sender`
     * must have allowed the Vault to use their tokens via `IERC20.approve()`. This matches the behavior of
     * `joinPool`.
     *
     * If `toInternalBalance` is true, tokens will be deposited to `recipient`'s internal balance instead of
     * transferred. This matches the behavior of `exitPool`.
     *
     * Note that ETH cannot be deposited to or withdrawn from Internal Balance: attempting to do so will trigger a
     * revert.
     */
    struct FundManagement {
        address sender;
        bool fromInternalBalance;
        address payable recipient;
        bool toInternalBalance;
    }

    /**
     * @dev Simulates a call to `batchSwap`, returning an array of Vault asset deltas. Calls to `swap` cannot be
     * simulated directly, but an equivalent `batchSwap` call can and will yield the exact same result.
     *
     * Each element in the array corresponds to the asset at the same index, and indicates the number of tokens (or ETH)
     * the Vault would take from the sender (if positive) or send to the recipient (if negative). The arguments it
     * receives are the same that an equivalent `batchSwap` call would receive.
     *
     * Unlike `batchSwap`, this function performs no checks on the sender or recipient field in the `funds` struct.
     * This makes it suitable to be called by off-chain applications via eth_call without needing to hold tokens,
     * approve them for the Vault, or even know a user's address.
     *
     * Note that this function is not 'view' (due to implementation details): the client code must explicitly execute
     * eth_call instead of eth_sendTransaction.
     */
    function queryBatchSwap(
        SwapKind kind,
        BatchSwapStep[] memory swaps,
        IAsset[] memory assets,
        FundManagement memory funds
    ) external returns (int256[] memory assetDeltas);

    // Flash Loans

    /**
     * @dev Performs a 'flash loan', sending tokens to `recipient`, executing the `receiveFlashLoan` hook on it,
     * and then reverting unless the tokens plus a proportional protocol fee have been returned.
     *
     * The `tokens` and `amounts` arrays must have the same length, and each entry in these indicates the loan amount
     * for each token contract. `tokens` must be sorted in ascending order.
     *
     * The 'userData' field is ignored by the Vault, and forwarded as-is to `recipient` as part of the
     * `receiveFlashLoan` call.
     *
     * Emits `FlashLoan` events.
     */
    function flashLoan(
        IFlashLoanRecipient recipient,
        IERC20[] memory tokens,
        uint256[] memory amounts,
        bytes memory userData
    ) external;

    /**
     * @dev Emitted for each individual flash loan performed by `flashLoan`.
     */
    event FlashLoan(IFlashLoanRecipient indexed recipient, IERC20 indexed token, uint256 amount, uint256 feeAmount);

    // Asset Management
    //
    // Each token registered for a Pool can be assigned an Asset Manager, which is able to freely withdraw the Pool's
    // tokens from the Vault, deposit them, or assign arbitrary values to its `managed` balance (see
    // `getPoolTokenInfo`). This makes them extremely powerful and dangerous. Even if an Asset Manager only directly
    // controls one of the tokens in a Pool, a malicious manager could set that token's balance to manipulate the
    // prices of the other tokens, and then drain the Pool with swaps. The risk of using Asset Managers is therefore
    // not constrained to the tokens they are managing, but extends to the entire Pool's holdings.
    //
    // However, a properly designed Asset Manager smart contract can be safely used for the Pool's benefit,
    // for example by lending unused tokens out for interest, or using them to participate in voting protocols.
    //
    // This concept is unrelated to the IAsset interface.

    /**
     * @dev Performs a set of Pool balance operations, which may be either withdrawals, deposits or updates.
     *
     * Pool Balance management features batching, which means a single contract call can be used to perform multiple
     * operations of different kinds, with different Pools and tokens, at once.
     *
     * For each operation, the caller must be registered as the Asset Manager for `token` in `poolId`.
     */
    function managePoolBalance(PoolBalanceOp[] memory ops) external;

    struct PoolBalanceOp {
        PoolBalanceOpKind kind;
        bytes32 poolId;
        IERC20 token;
        uint256 amount;
    }

    /**
     * Withdrawals decrease the Pool's cash, but increase its managed balance, leaving the total balance unchanged.
     *
     * Deposits increase the Pool's cash, but decrease its managed balance, leaving the total balance unchanged.
     *
     * Updates don't affect the Pool's cash balance, but because the managed balance changes, it does alter the total.
     * The external amount can be either increased or decreased by this call (i.e., reporting a gain or a loss).
     */
    enum PoolBalanceOpKind { WITHDRAW, DEPOSIT, UPDATE }

    /**
     * @dev Emitted when a Pool's token Asset Manager alters its balance via `managePoolBalance`.
     */
    event PoolBalanceManaged(
        bytes32 indexed poolId,
        address indexed assetManager,
        IERC20 indexed token,
        int256 cashDelta,
        int256 managedDelta
    );

    // Protocol Fees
    //
    // Some operations cause the Vault to collect tokens in the form of protocol fees, which can then be withdrawn by
    // permissioned accounts.
    //
    // There are two kinds of protocol fees:
    //
    //  - flash loan fees: charged on all flash loans, as a percentage of the amounts lent.
    //
    //  - swap fees: a percentage of the fees charged by Pools when performing swaps. For a number of reasons, including
    // swap gas costs and interface simplicity, protocol swap fees are not charged on each individual swap. Rather,
    // Pools are expected to keep track of how much they have charged in swap fees, and pay any outstanding debts to the
    // Vault when they are joined or exited. This prevents users from joining a Pool with unpaid debt, as well as
    // exiting a Pool in debt without first paying their share.

    /**
     * @dev Returns the current protocol fee module.
     */
    function getProtocolFeesCollector() external view returns (IProtocolFeesCollector);

    /**
     * @dev Safety mechanism to pause most Vault operations in the event of an emergency - typically detection of an
     * error in some part of the system.
     *
     * The Vault can only be paused during an initial time period, after which pausing is forever disabled.
     *
     * While the contract is paused, the following features are disabled:
     * - depositing and transferring internal balance
     * - transferring external balance (using the Vault's allowance)
     * - swaps
     * - joining Pools
     * - Asset Manager interactions
     *
     * Internal Balance can still be withdrawn, and Pools exited.
     */
    function setPaused(bool paused) external;

    /**
     * @dev Returns the Vault's WETH instance.
     */
    function WETH() external view returns (IWETH);
    // solhint-disable-previous-line func-name-mixedcase
}

// 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 "./IVault.sol";

interface IPoolSwapStructs {
    // This is not really an interface - it just defines common structs used by other interfaces: IGeneralPool and
    // IMinimalSwapInfoPool.
    //
    // This data structure represents a request for a token swap, where `kind` indicates the swap type ('given in' or
    // 'given out') which indicates whether or not the amount sent by the pool is known.
    //
    // The pool receives `tokenIn` and sends `tokenOut`. `amount` is the number of `tokenIn` tokens the pool will take
    // in, or the number of `tokenOut` tokens the Pool will send out, depending on the given swap `kind`.
    //
    // All other fields are not strictly necessary for most swaps, but are provided to support advanced scenarios in
    // some Pools.
    //
    // `poolId` is the ID of the Pool involved in the swap - this is useful for Pool contracts that implement more than
    // one Pool.
    //
    // The meaning of `lastChangeBlock` depends on the Pool specialization:
    //  - Two Token or Minimal Swap Info: the last block in which either `tokenIn` or `tokenOut` changed its total
    //    balance.
    //  - General: the last block in which *any* of the Pool's registered tokens changed its total balance.
    //
    // `from` is the origin address for the funds the Pool receives, and `to` is the destination address
    // where the Pool sends the outgoing tokens.
    //
    // `userData` is extra data provided by the caller - typically a signature from a trusted party.
    struct SwapRequest {
        IVault.SwapKind kind;
        IERC20 tokenIn;
        IERC20 tokenOut;
        uint256 amount;
        // Misc data
        bytes32 poolId;
        uint256 lastChangeBlock;
        address from;
        address to;
        bytes userData;
    }
}

// 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;

interface IAuthentication {
    /**
     * @dev Returns the action identifier associated with the external function described by `selector`.
     */
    function getActionId(bytes4 selector) external view returns (bytes32);
}

// 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;

/**
 * @dev Interface for the SignatureValidator helper, used to support meta-transactions.
 */
interface ISignaturesValidator {
    /**
     * @dev Returns the EIP712 domain separator.
     */
    function getDomainSeparator() external view returns (bytes32);

    /**
     * @dev Returns the next nonce used by an address to sign messages.
     */
    function getNextNonce(address user) external view 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;

/**
 * @dev Interface for the TemporarilyPausable helper.
 */
interface ITemporarilyPausable {
    /**
     * @dev Emitted every time the pause state changes by `_setPaused`.
     */
    event PausedStateChanged(bool paused);

    /**
     * @dev Returns the current paused state.
     */
    function getPausedState()
        external
        view
        returns (
            bool paused,
            uint256 pauseWindowEndTime,
            uint256 bufferPeriodEndTime
        );
}

// 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 "../openzeppelin/IERC20.sol";

/**
 * @dev Interface for WETH9.
 * See https://github.com/gnosis/canonical-weth/blob/0dd1ea3e295eef916d0c6223ec63141137d22d67/contracts/WETH9.sol
 */
interface IWETH is IERC20 {
    function deposit() external payable;

    function withdraw(uint256 amount) external;
}

// 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;

/**
 * @dev This is an empty interface used to represent either ERC20-conforming token contracts or ETH (using the zero
 * address sentinel value). We're just relying on the fact that `interface` can be used to declare new address-like
 * types.
 *
 * This concept is unrelated to a Pool's Asset Managers.
 */
interface IAsset {
    // solhint-disable-previous-line no-empty-blocks
}

// 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;

interface IAuthorizer {
    /**
     * @dev Returns true if `account` can perform the action described by `actionId` in the contract `where`.
     */
    function canPerform(
        bytes32 actionId,
        address account,
        address where
    ) 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;

// Inspired by Aave Protocol's IFlashLoanReceiver.

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

interface IFlashLoanRecipient {
    /**
     * @dev When `flashLoan` is called on the Vault, it invokes the `receiveFlashLoan` hook on the recipient.
     *
     * At the time of the call, the Vault will have transferred `amounts` for `tokens` to the recipient. Before this
     * call returns, the recipient must have transferred `amounts` plus `feeAmounts` for each token back to the
     * Vault, or else the entire flash loan will revert.
     *
     * `userData` is the same value passed in the `IVault.flashLoan` call.
     */
    function receiveFlashLoan(
        IERC20[] memory tokens,
        uint256[] memory amounts,
        uint256[] memory feeAmounts,
        bytes memory userData
    ) external;
}

// 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 "./IVault.sol";
import "./IAuthorizer.sol";

interface IProtocolFeesCollector {
    event SwapFeePercentageChanged(uint256 newSwapFeePercentage);
    event FlashLoanFeePercentageChanged(uint256 newFlashLoanFeePercentage);

    function withdrawCollectedFees(
        IERC20[] calldata tokens,
        uint256[] calldata amounts,
        address recipient
    ) external;

    function setSwapFeePercentage(uint256 newSwapFeePercentage) external;

    function setFlashLoanFeePercentage(uint256 newFlashLoanFeePercentage) external;

    function getSwapFeePercentage() external view returns (uint256);

    function getFlashLoanFeePercentage() external view returns (uint256);

    function getCollectedFeeAmounts(IERC20[] memory tokens) external view returns (uint256[] memory feeAmounts);

    function getAuthorizer() external view returns (IAuthorizer);

    function vault() external view returns (IVault);
}

// 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";

interface IAssetManager {
    /**
     * @notice Emitted when asset manager is rebalanced
     */
    event Rebalance(bytes32 poolId);

    /**
     * @notice Sets the config
     */
    function setConfig(bytes32 poolId, bytes calldata config) external;

    /**
     * Note: No function to read the asset manager config is included in IAssetManager
     * as the signature is expected to vary between asset manager implementations
     */

    /**
     * @notice Returns the asset manager's token
     */
    function getToken() external view returns (IERC20);

    /**
     * @return the current assets under management of this asset manager
     */
    function getAUM(bytes32 poolId) external view returns (uint256);

    /**
     * @return poolCash - The up-to-date cash balance of the pool
     * @return poolManaged - The up-to-date managed balance of the pool
     */
    function getPoolBalances(bytes32 poolId) external view returns (uint256 poolCash, uint256 poolManaged);

    /**
     * @return The difference in tokens between the target investment
     * and the currently invested amount (i.e. the amount that can be invested)
     */
    function maxInvestableBalance(bytes32 poolId) external view returns (int256);

    /**
     * @notice Updates the Vault on the value of the pool's investment returns
     */
    function updateBalanceOfPool(bytes32 poolId) external;

    /**
     * @notice Determines whether the pool should rebalance given the provided balances
     */
    function shouldRebalance(uint256 cash, uint256 managed) external view returns (bool);

    /**
     * @notice Rebalances funds between the pool and the asset manager to maintain target investment percentage.
     * @param poolId - the poolId of the pool to be rebalanced
     * @param force - a boolean representing whether a rebalance should be forced even when the pool is near balance
     */
    function rebalance(bytes32 poolId, bool force) external;

    /**
     * @notice allows an authorized rebalancer to remove capital to facilitate large withdrawals
     * @param poolId - the poolId of the pool to withdraw funds back to
     * @param amount - the amount of tokens to withdraw back to the pool
     */
    function capitalOut(bytes32 poolId, uint256 amount) external;
}

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

interface IControlledPool {
    function setSwapFeePercentage(uint256 swapFeePercentage) external;

    function setAssetManagerPoolConfig(IERC20 token, bytes memory poolConfig) external;
}

// 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/solidity-utils/helpers/BalancerErrors.sol";

import "../math/Math.sol";

/**
 * @dev Library for encoding and decoding values stored inside a 256 bit word. Typically used to pack multiple values in
 * a single storage slot, saving gas by performing less storage accesses.
 *
 * Each value is defined by its size and the least significant bit in the word, also known as offset. For example, two
 * 128 bit values may be encoded in a word by assigning one an offset of 0, and the other an offset of 128.
 *
 * We could use Solidity structs to pack values together in a single storage slot instead of relying on a custom and
 * error-prone library, but unfortunately Solidity only allows for structs to live in either storage, calldata or
 * memory. Because a memory struct uses not just memory but also a slot in the stack (to store its memory location),
 * using memory for word-sized values (i.e. of 256 bits or less) is strictly less gas performant, and doesn't even
 * prevent stack-too-deep issues. This is compounded by the fact that Balancer contracts typically are memory-intensive,
 * and the cost of accesing memory increases quadratically with the number of allocated words. Manual packing and
 * unpacking is therefore the preferred approach.
 */
library WordCodec {
    // Masks are values with the least significant N bits set. They can be used to extract an encoded value from a word,
    // or to insert a new one replacing the old.
    uint256 private constant _MASK_1 = 2**(1) - 1;
    uint256 private constant _MASK_192 = 2**(192) - 1;

    // In-place insertion

    /**
     * @dev Inserts an unsigned integer of bitLength, shifted by an offset, into a 256 bit word,
     * replacing the old value. Returns the new word.
     */
    function insertUint(
        bytes32 word,
        uint256 value,
        uint256 offset,
        uint256 bitLength
    ) internal pure returns (bytes32) {
        _validateEncodingParams(value, offset, bitLength);

        uint256 mask = (1 << bitLength) - 1;
        bytes32 clearedWord = bytes32(uint256(word) & ~(mask << offset));
        return clearedWord | bytes32(value << offset);
    }

    /**
     * @dev Inserts a signed integer shifted by an offset into a 256 bit word, replacing the old value. Returns
     * the new word.
     *
     * Assumes `value` can be represented using `bitLength` bits.
     */
    function insertInt(
        bytes32 word,
        int256 value,
        uint256 offset,
        uint256 bitLength
    ) internal pure returns (bytes32) {
        _validateEncodingParams(value, offset, bitLength);

        uint256 mask = (1 << bitLength) - 1;
        bytes32 clearedWord = bytes32(uint256(word) & ~(mask << offset));
        // Integer values need masking to remove the upper bits of negative values.
        return clearedWord | bytes32((uint256(value) & mask) << offset);
    }

    // Encoding

    /**
     * @dev Encodes an unsigned integer shifted by an offset. Ensures value fits within
     * `bitLength` bits.
     *
     * The return value can be ORed bitwise with other encoded values to form a 256 bit word.
     */
    function encodeUint(
        uint256 value,
        uint256 offset,
        uint256 bitLength
    ) internal pure returns (bytes32) {
        _validateEncodingParams(value, offset, bitLength);

        return bytes32(value << offset);
    }

    /**
     * @dev Encodes a signed integer shifted by an offset.
     *
     * The return value can be ORed bitwise with other encoded values to form a 256 bit word.
     */
    function encodeInt(
        int256 value,
        uint256 offset,
        uint256 bitLength
    ) internal pure returns (bytes32) {
        _validateEncodingParams(value, offset, bitLength);

        uint256 mask = (1 << bitLength) - 1;
        // Integer values need masking to remove the upper bits of negative values.
        return bytes32((uint256(value) & mask) << offset);
    }

    // Decoding

    /**
     * @dev Decodes and returns an unsigned integer with `bitLength` bits, shifted by an offset, from a 256 bit word.
     */
    function decodeUint(
        bytes32 word,
        uint256 offset,
        uint256 bitLength
    ) internal pure returns (uint256) {
        return uint256(word >> offset) & ((1 << bitLength) - 1);
    }

    /**
     * @dev Decodes and returns a signed integer with `bitLength` bits, shifted by an offset, from a 256 bit word.
     */
    function decodeInt(
        bytes32 word,
        uint256 offset,
        uint256 bitLength
    ) internal pure returns (int256) {
        int256 maxInt = int256((1 << (bitLength - 1)) - 1);
        uint256 mask = (1 << bitLength) - 1;

        int256 value = int256(uint256(word >> offset) & mask);
        // In case the decoded value is greater than the max positive integer that can be represented with bitLength
        // bits, we know it was originally a negative integer. Therefore, we mask it to restore the sign in the 256 bit
        // representation.
        return value > maxInt ? (value | int256(~mask)) : value;
    }

    // Special cases

    /**
     * @dev Decodes and returns a boolean shifted by an offset from a 256 bit word.
     */
    function decodeBool(bytes32 word, uint256 offset) internal pure returns (bool) {
        return (uint256(word >> offset) & _MASK_1) == 1;
    }

    /**
     * @dev Inserts a 192 bit value shifted by an offset into a 256 bit word, replacing the old value.
     * Returns the new word.
     *
     * Assumes `value` can be represented using 192 bits.
     */
    function insertBits192(
        bytes32 word,
        bytes32 value,
        uint256 offset
    ) internal pure returns (bytes32) {
        bytes32 clearedWord = bytes32(uint256(word) & ~(_MASK_192 << offset));
        return clearedWord | bytes32((uint256(value) & _MASK_192) << offset);
    }

    /**
     * @dev Inserts a boolean value shifted by an offset into a 256 bit word, replacing the old value. Returns the new
     * word.
     */
    function insertBool(
        bytes32 word,
        bool value,
        uint256 offset
    ) internal pure returns (bytes32) {
        bytes32 clearedWord = bytes32(uint256(word) & ~(_MASK_1 << offset));
        return clearedWord | bytes32(uint256(value ? 1 : 0) << offset);
    }

    // Helpers

    function _validateEncodingParams(
        uint256 value,
        uint256 offset,
        uint256 bitLength
    ) private pure {
        _require(offset < 256, Errors.OUT_OF_BOUNDS);
        // We never accept 256 bit values (which would make the codec pointless), and the larger the offset the smaller
        // the maximum bit length.
        _require(bitLength >= 1 && bitLength <= Math.min(255, 256 - offset), Errors.OUT_OF_BOUNDS);

        // Testing unsigned values for size is straightforward: their upper bits must be cleared.
        _require(value >> bitLength == 0, Errors.CODEC_OVERFLOW);
    }

    function _validateEncodingParams(
        int256 value,
        uint256 offset,
        uint256 bitLength
    ) private pure {
        _require(offset < 256, Errors.OUT_OF_BOUNDS);
        // We never accept 256 bit values (which would make the codec pointless), and the larger the offset the smaller
        // the maximum bit length.
        _require(bitLength >= 1 && bitLength <= Math.min(255, 256 - offset), Errors.OUT_OF_BOUNDS);

        // Testing signed values for size is a bit more involved.
        if (value >= 0) {
            // For positive values, we can simply check that the upper bits are clear. Notice we remove one bit from the
            // length for the sign bit.
            _require(value >> (bitLength - 1) == 0, Errors.CODEC_OVERFLOW);
        } else {
            // Negative values can receive the same treatment by making them positive, with the caveat that the range
            // for negative values in two's complement supports one more value than for the positive case.
            _require(Math.abs(value + 1) >> (bitLength - 1) == 0, Errors.CODEC_OVERFLOW);
        }
    }
}

// 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/solidity-utils/helpers/BalancerErrors.sol";
import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/ITemporarilyPausable.sol";

/**
 * @dev Allows for a contract to be paused during an initial period after deployment, disabling functionality. Can be
 * used as an emergency switch in case a security vulnerability or threat is identified.
 *
 * The contract can only be paused during the Pause Window, a period that starts at deployment. It can also be
 * unpaused and repaused any number of times during this period. This is intended to serve as a safety measure: it lets
 * system managers react quickly to potentially dangerous situations, knowing that this action is reversible if careful
 * analysis later determines there was a false alarm.
 *
 * If the contract is paused when the Pause Window finishes, it will remain in the paused state through an additional
 * Buffer Period, after which it will be automatically unpaused forever. This is to ensure there is always enough time
 * to react to an emergency, even if the threat is discovered shortly before the Pause Window expires.
 *
 * Note that since the contract can only be paused within the Pause Window, unpausing during the Buffer Period is
 * irreversible.
 */
abstract contract TemporarilyPausable is ITemporarilyPausable {
    // The Pause Window and Buffer Period are timestamp-based: they should not be relied upon for sub-minute accuracy.
    // solhint-disable not-rely-on-time

    uint256 private constant _MAX_PAUSE_WINDOW_DURATION = 90 days;
    uint256 private constant _MAX_BUFFER_PERIOD_DURATION = 30 days;

    uint256 private immutable _pauseWindowEndTime;
    uint256 private immutable _bufferPeriodEndTime;

    bool private _paused;

    constructor(uint256 pauseWindowDuration, uint256 bufferPeriodDuration) {
        _require(pauseWindowDuration <= _MAX_PAUSE_WINDOW_DURATION, Errors.MAX_PAUSE_WINDOW_DURATION);
        _require(bufferPeriodDuration <= _MAX_BUFFER_PERIOD_DURATION, Errors.MAX_BUFFER_PERIOD_DURATION);

        uint256 pauseWindowEndTime = block.timestamp + pauseWindowDuration;

        _pauseWindowEndTime = pauseWindowEndTime;
        _bufferPeriodEndTime = pauseWindowEndTime + bufferPeriodDuration;
    }

    /**
     * @dev Reverts if the contract is paused.
     */
    modifier whenNotPaused() {
        _ensureNotPaused();
        _;
    }

    /**
     * @dev Returns the current contract pause status, as well as the end times of the Pause Window and Buffer
     * Period.
     */
    function getPausedState()
        external
        view
        override
        returns (
            bool paused,
            uint256 pauseWindowEndTime,
            uint256 bufferPeriodEndTime
        )
    {
        paused = !_isNotPaused();
        pauseWindowEndTime = _getPauseWindowEndTime();
        bufferPeriodEndTime = _getBufferPeriodEndTime();
    }

    /**
     * @dev Sets the pause state to `paused`. The contract can only be paused until the end of the Pause Window, and
     * unpaused until the end of the Buffer Period.
     *
     * Once the Buffer Period expires, this function reverts unconditionally.
     */
    function _setPaused(bool paused) internal {
        if (paused) {
            _require(block.timestamp < _getPauseWindowEndTime(), Errors.PAUSE_WINDOW_EXPIRED);
        } else {
            _require(block.timestamp < _getBufferPeriodEndTime(), Errors.BUFFER_PERIOD_EXPIRED);
        }

        _paused = paused;
        emit PausedStateChanged(paused);
    }

    /**
     * @dev Reverts if the contract is paused.
     */
    function _ensureNotPaused() internal view {
        _require(_isNotPaused(), Errors.PAUSED);
    }

    /**
     * @dev Reverts if the contract is not paused.
     */
    function _ensurePaused() internal view {
        _require(!_isNotPaused(), Errors.NOT_PAUSED);
    }

    /**
     * @dev Returns true if the contract is unpaused.
     *
     * Once the Buffer Period expires, the gas cost of calling this function is reduced dramatically, as storage is no
     * longer accessed.
     */
    function _isNotPaused() internal view returns (bool) {
        // After the Buffer Period, the (inexpensive) timestamp check short-circuits the storage access.
        return block.timestamp > _getBufferPeriodEndTime() || !_paused;
    }

    // These getters lead to reduced bytecode size by inlining the immutable variables in a single place.

    function _getPauseWindowEndTime() private view returns (uint256) {
        return _pauseWindowEndTime;
    }

    function _getBufferPeriodEndTime() private view returns (uint256) {
        return _bufferPeriodEndTime;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/BalancerErrors.sol";
import "@balancer-labs/v2-interfaces/contracts/solidity-utils/openzeppelin/IERC20.sol";

import "./SafeMath.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is IERC20 {
    using SafeMath for uint256;

    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
        _decimals = 18;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
     * called.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view returns (uint8) {
        return _decimals;
    }

    /**
     * @dev See {IERC20-totalSupply}. The total supply should only be read using this function
     *
     * Can be overridden by derived contracts to store the total supply in a different way (e.g. packed with other
     * storage values).
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev Sets a new value for the total supply. It should only be set using this function.
     *
     * * Can be overridden by derived contracts to store the total supply in a different way (e.g. packed with other
     * storage values).
     */
    function _setTotalSupply(uint256 value) internal virtual {
        _totalSupply = value;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            msg.sender,
            _allowances[sender][msg.sender].sub(amount, Errors.ERC20_TRANSFER_EXCEEDS_ALLOWANCE)
        );
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(msg.sender, spender, _allowances[msg.sender][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(
            msg.sender,
            spender,
            _allowances[msg.sender][spender].sub(subtractedValue, Errors.ERC20_DECREASED_ALLOWANCE_BELOW_ZERO)
        );
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        _require(sender != address(0), Errors.ERC20_TRANSFER_FROM_ZERO_ADDRESS);
        _require(recipient != address(0), Errors.ERC20_TRANSFER_TO_ZERO_ADDRESS);

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, Errors.ERC20_TRANSFER_EXCEEDS_BALANCE);
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        _beforeTokenTransfer(address(0), account, amount);

        _setTotalSupply(totalSupply().add(amount));
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        _require(account != address(0), Errors.ERC20_BURN_FROM_ZERO_ADDRESS);

        _beforeTokenTransfer(account, address(0), amount);

        _balances[account] = _balances[account].sub(amount, Errors.ERC20_BURN_EXCEEDS_BALANCE);
        _setTotalSupply(totalSupply().sub(amount));
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal {
        _decimals = decimals_;
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be to transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        // solhint-disable-previous-line no-empty-blocks
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/BalancerErrors.sol";

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow checks.
 * Adapted from OpenZeppelin's SafeMath library.
 */
library Math {
    /**
     * @dev Returns the absolute value of a signed integer.
     */
    function abs(int256 a) internal pure returns (uint256) {
        return a > 0 ? uint256(a) : uint256(-a);
    }

    /**
     * @dev Returns the addition of two unsigned integers of 256 bits, reverting on overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        _require(c >= a, Errors.ADD_OVERFLOW);
        return c;
    }

    /**
     * @dev Returns the addition of two signed integers, reverting on overflow.
     */
    function add(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a + b;
        _require((b >= 0 && c >= a) || (b < 0 && c < a), Errors.ADD_OVERFLOW);
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers of 256 bits, reverting on overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        _require(b <= a, Errors.SUB_OVERFLOW);
        uint256 c = a - b;
        return c;
    }

    /**
     * @dev Returns the subtraction of two signed integers, reverting on overflow.
     */
    function sub(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a - b;
        _require((b >= 0 && c <= a) || (b < 0 && c > a), Errors.SUB_OVERFLOW);
        return c;
    }

    /**
     * @dev Returns the largest of two numbers of 256 bits.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers of 256 bits.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a * b;
        _require(a == 0 || c / a == b, Errors.MUL_OVERFLOW);
        return c;
    }

    function div(
        uint256 a,
        uint256 b,
        bool roundUp
    ) internal pure returns (uint256) {
        return roundUp ? divUp(a, b) : divDown(a, b);
    }

    function divDown(uint256 a, uint256 b) internal pure returns (uint256) {
        _require(b != 0, Errors.ZERO_DIVISION);
        return a / b;
    }

    function divUp(uint256 a, uint256 b) internal pure returns (uint256) {
        _require(b != 0, Errors.ZERO_DIVISION);

        if (a == 0) {
            return 0;
        } else {
            return 1 + (a - 1) / b;
        }
    }
}

// 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/vault/IVault.sol";

import "@balancer-labs/v2-solidity-utils/contracts/openzeppelin/ERC20Permit.sol";

/**
 * @title Highly opinionated token implementation
 * @author Balancer Labs
 * @dev
 * - Includes functions to increase and decrease allowance as a workaround
 *   for the well-known issue with `approve`:
 *   https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
 * - Allows for 'infinite allowance', where an allowance of 0xff..ff is not
 *   decreased by calls to transferFrom
 * - Lets a token holder use `transferFrom` to send their own tokens,
 *   without first setting allowance
 * - Emits 'Approval' events whenever allowance is changed by `transferFrom`
 * - Assigns infinite allowance for all token holders to the Vault
 */
contract BalancerPoolToken is ERC20Permit {
    IVault private immutable _vault;

    constructor(
        string memory tokenName,
        string memory tokenSymbol,
        IVault vault
    ) ERC20(tokenName, tokenSymbol) ERC20Permit(tokenName) {
        _vault = vault;
    }

    function getVault() public view returns (IVault) {
        return _vault;
    }

    // Overrides

    /**
     * @dev Override to grant the Vault infinite allowance, causing for Pool Tokens to not require approval.
     *
     * This is sound as the Vault already provides authorization mechanisms when initiation token transfers, which this
     * contract inherits.
     */
    function allowance(address owner, address spender) public view override returns (uint256) {
        if (spender == address(getVault())) {
            return uint256(-1);
        } else {
            return super.allowance(owner, spender);
        }
    }

    /**
     * @dev Override to allow for 'infinite allowance' and let the token owner use `transferFrom` with no self-allowance
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        uint256 currentAllowance = allowance(sender, msg.sender);
        _require(msg.sender == sender || currentAllowance >= amount, Errors.ERC20_TRANSFER_EXCEEDS_ALLOWANCE);

        _transfer(sender, recipient, amount);

        if (msg.sender != sender && currentAllowance != uint256(-1)) {
            // Because of the previous require, we know that if msg.sender != sender then currentAllowance >= amount
            _approve(sender, msg.sender, currentAllowance - amount);
        }

        return true;
    }

    /**
     * @dev Override to allow decreasing allowance by more than the current amount (setting it to zero)
     */
    function decreaseAllowance(address spender, uint256 amount) public override returns (bool) {
        uint256 currentAllowance = allowance(msg.sender, spender);

        if (amount >= currentAllowance) {
            _approve(msg.sender, spender, 0);
        } else {
            // No risk of underflow due to if condition
            _approve(msg.sender, spender, currentAllowance - amount);
        }

        return true;
    }

    // Internal functions

    function _mintPoolTokens(address recipient, uint256 amount) internal {
        _mint(recipient, amount);
    }

    function _burnPoolTokens(address sender, uint256 amount) internal {
        _burn(sender, amount);
    }
}

// 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/vault/IAuthorizer.sol";

import "@balancer-labs/v2-solidity-utils/contracts/helpers/Authentication.sol";

/**
 * @dev Base authorization layer implementation for Pools.
 *
 * The owner account can call some of the permissioned functions - access control of the rest is delegated to the
 * Authorizer. Note that this owner is immutable: more sophisticated permission schemes, such as multiple ownership,
 * granular roles, etc., could be built on top of this by making the owner a smart contract.
 *
 * Access control of all other permissioned functions is delegated to an Authorizer. It is also possible to delegate
 * control of *all* permissioned functions to the Authorizer by setting the owner address to `_DELEGATE_OWNER`.
 */
abstract contract BasePoolAuthorization is Authentication {
    address private immutable _owner;

    address private constant _DELEGATE_OWNER = 0xBA1BA1ba1BA1bA1bA1Ba1BA1ba1BA1bA1ba1ba1B;

    constructor(address owner) {
        _owner = owner;
    }

    function getOwner() public view returns (address) {
        return _owner;
    }

    function getAuthorizer() external view returns (IAuthorizer) {
        return _getAuthorizer();
    }

    function _canPerform(bytes32 actionId, address account) internal view override returns (bool) {
        if ((getOwner() != _DELEGATE_OWNER) && _isOwnerOnlyAction(actionId)) {
            // Only the owner can perform "owner only" actions, unless the owner is delegated.
            return msg.sender == getOwner();
        } else {
            // Non-owner actions are always processed via the Authorizer, as "owner only" ones are when delegated.
            return _getAuthorizer().canPerform(actionId, account, address(this));
        }
    }

    function _isOwnerOnlyAction(bytes32 actionId) internal view virtual returns (bool);

    function _getAuthorizer() internal view virtual returns (IAuthorizer);
}

// 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/solidity-utils/helpers/BalancerErrors.sol";
import "@balancer-labs/v2-interfaces/contracts/pool-utils/BasePoolUserData.sol";
import "@balancer-labs/v2-interfaces/contracts/pool-utils/IRecoveryMode.sol";

import "@balancer-labs/v2-solidity-utils/contracts/math/FixedPoint.sol";

import "./BasePoolAuthorization.sol";

/**
 * @notice Handle storage and state changes for pools that support "Recovery Mode".
 *
 * @dev This is intended to provide a safe way to exit any pool during some kind of emergency, to avoid locking funds
 * in the event the pool enters a non-functional state (i.e., some code that normally runs during exits is causing
 * them to revert).
 *
 * Recovery Mode is *not* the same as pausing the pool. The pause function is only available during a short window
 * after factory deployment. Pausing can only be intentionally reversed during a buffer period, and the contract
 * will permanently unpause itself thereafter. Paused pools are completely disabled, in a kind of suspended animation,
 * until they are voluntarily or involuntarily unpaused.
 *
 * By contrast, a privileged account - typically a governance multisig - can place a pool in Recovery Mode at any
 * time, and it is always reversible. The pool is *not* disabled while in this mode: though of course whatever
 * condition prompted the transition to Recovery Mode has likely effectively disabled some functions. Rather,
 * a special "clean" exit is enabled, which runs the absolute minimum code necessary to exit proportionally.
 * In particular, stable pools do not attempt to compute the invariant (which is a complex, iterative calculation
 * that can fail in extreme circumstances), and no protocol fees are collected.
 *
 * It is critical to ensure that turning on Recovery Mode would do no harm, if activated maliciously or in error.
 */
abstract contract RecoveryMode is IRecoveryMode, BasePoolAuthorization {
    using FixedPoint for uint256;
    using BasePoolUserData for bytes;

    /**
     * @dev Reverts if the contract is in Recovery Mode.
     */
    modifier whenNotInRecoveryMode() {
        _ensureNotInRecoveryMode();
        _;
    }

    /**
     * @notice Enable recovery mode, which enables a special safe exit path for LPs.
     * @dev Does not otherwise affect pool operations (beyond deferring payment of protocol fees), though some pools may
     * perform certain operations in a "safer" manner that is less likely to fail, in an attempt to keep the pool
     * running, even in a pathological state. Unlike the Pause operation, which is only available during a short window
     * after factory deployment, Recovery Mode can always be enabled.
     */
    function enableRecoveryMode() external override authenticate {
        _setRecoveryMode(true);
    }

    /**
     * @notice Disable recovery mode, which disables the special safe exit path for LPs.
     * @dev Protocol fees are not paid while in Recovery Mode, so it should only remain active for as long as strictly
     * necessary.
     */
    function disableRecoveryMode() external override authenticate {
        _setRecoveryMode(false);
    }

    // Defer implementation for functions that require storage

    /**
     * @notice Override to check storage and return whether the pool is in Recovery Mode
     */
    function inRecoveryMode() public view virtual override returns (bool);

    /**
     * @dev Override to update storage and emit the event
     *
     * No complex code or external calls that could fail should be placed in the implementations,
     * which could jeopardize the ability to enable and disable Recovery Mode.
     */
    function _setRecoveryMode(bool enabled) internal virtual;

    /**
     * @dev Reverts if the contract is not in Recovery Mode.
     */
    function _ensureInRecoveryMode() internal view {
        _require(inRecoveryMode(), Errors.NOT_IN_RECOVERY_MODE);
    }

    /**
     * @dev Reverts if the contract is in Recovery Mode.
     */
    function _ensureNotInRecoveryMode() internal view {
        _require(!inRecoveryMode(), Errors.IN_RECOVERY_MODE);
    }

    /**
     * @dev A minimal proportional exit, suitable as is for most pools: though not for pools with preminted BPT
     * or other special considerations. Designed to be overridden if a pool needs to do extra processing,
     * such as scaling a stored invariant, or caching the new total supply.
     *
     * No complex code or external calls should be made in derived contracts that override this!
     */
    function _doRecoveryModeExit(
        uint256[] memory balances,
        uint256 totalSupply,
        bytes memory userData
    ) internal virtual returns (uint256, uint256[] memory) {
        uint256 bptAmountIn = userData.recoveryModeExit();

        uint256[] memory amountsOut = _computeProportionalAmountsOut(balances, totalSupply, bptAmountIn);

        return (bptAmountIn, amountsOut);
    }

    function _computeProportionalAmountsOut(
        uint256[] memory balances,
        uint256 totalSupply,
        uint256 bptAmountIn
    ) internal pure returns (uint256[] memory amountsOut) {
        /**********************************************************************************************
        // exactBPTInForTokensOut                                                                    //
        // (per token)                                                                               //
        // aO = tokenAmountOut             /        bptIn         \                                  //
        // b = tokenBalance      a0 = b * | ---------------------  |                                 //
        // bptIn = bptAmountIn             \     bptTotalSupply    /                                 //
        // bpt = bptTotalSupply                                                                      //
        **********************************************************************************************/

        // Since we're computing an amount out, we round down overall. This means rounding down on both the
        // multiplication and division.

        uint256 bptRatio = bptAmountIn.divDown(totalSupply);

        amountsOut = new uint256[](balances.length);
        for (uint256 i = 0; i < balances.length; i++) {
            amountsOut[i] = balances[i].mulDown(bptRatio);
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/BalancerErrors.sol";

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        _require(c >= a, Errors.ADD_OVERFLOW);

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, Errors.SUB_OVERFLOW);
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        uint256 errorCode
    ) internal pure returns (uint256) {
        _require(b <= a, errorCode);
        uint256 c = a - b;

        return c;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "@balancer-labs/v2-interfaces/contracts/solidity-utils/openzeppelin/IERC20Permit.sol";

import "./ERC20.sol";
import "../helpers/EOASignaturesValidator.sol";

/**
 * @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 *
 * _Available since v3.4._
 */
abstract contract ERC20Permit is ERC20, IERC20Permit, EOASignaturesValidator {
    // solhint-disable-next-line var-name-mixedcase
    bytes32 private constant _PERMIT_TYPEHASH = keccak256(
        "Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"
    );

    /**
     * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
     *
     * It's a good idea to use the same `name` that is defined as the ERC20 token name.
     */
    constructor(string memory name) EIP712(name, "1") {
        // solhint-disable-previous-line no-empty-blocks
    }

    /**
     * @dev See {IERC20Permit-permit}.
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual override {
        bytes32 structHash = keccak256(
            abi.encode(_PERMIT_TYPEHASH, owner, spender, value, getNextNonce(owner), deadline)
        );

        _ensureValidSignature(owner, structHash, _toArraySignature(v, r, s), deadline, Errors.INVALID_SIGNATURE);

        _approve(owner, spender, value);
    }

    /**
     * @dev See {IERC20Permit-nonces}.
     */
    function nonces(address owner) public view override returns (uint256) {
        return getNextNonce(owner);
    }

    /**
     * @dev See {IERC20Permit-DOMAIN_SEPARATOR}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view override returns (bytes32) {
        return getDomainSeparator();
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over `owner`'s tokens,
     * given `owner`'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for `permit`, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// 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/solidity-utils/helpers/BalancerErrors.sol";
import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/ISignaturesValidator.sol";

import "../openzeppelin/EIP712.sol";

/**
 * @dev Utility for signing Solidity function calls.
 */
abstract contract EOASignaturesValidator is ISignaturesValidator, EIP712 {
    // Replay attack prevention for each account.
    mapping(address => uint256) internal _nextNonce;

    function getDomainSeparator() public view override returns (bytes32) {
        return _domainSeparatorV4();
    }

    function getNextNonce(address account) public view override returns (uint256) {
        return _nextNonce[account];
    }

    function _ensureValidSignature(
        address account,
        bytes32 structHash,
        bytes memory signature,
        uint256 errorCode
    ) internal {
        return _ensureValidSignature(account, structHash, signature, type(uint256).max, errorCode);
    }

    function _ensureValidSignature(
        address account,
        bytes32 structHash,
        bytes memory signature,
        uint256 deadline,
        uint256 errorCode
    ) internal {
        bytes32 digest = _hashTypedDataV4(structHash);
        _require(_isValidSignature(account, digest, signature), errorCode);

        // We could check for the deadline before validating the signature, but this leads to saner error processing (as
        // we only care about expired deadlines if the signature is correct) and only affects the gas cost of the revert
        // scenario, which will only occur infrequently, if ever.
        // The deadline is timestamp-based: it should not be relied upon for sub-minute accuracy.
        // solhint-disable-next-line not-rely-on-time
        _require(deadline >= block.timestamp, Errors.EXPIRED_SIGNATURE);

        // We only advance the nonce after validating the signature. This is irrelevant for this module, but it can be
        // important in derived contracts that override _isValidSignature (e.g. SignaturesValidator), as we want for
        // the observable state to still have the current nonce as the next valid one.
        _nextNonce[account] += 1;
    }

    function _isValidSignature(
        address account,
        bytes32 digest,
        bytes memory signature
    ) internal view virtual returns (bool) {
        _require(signature.length == 65, Errors.MALFORMED_SIGNATURE);

        bytes32 r;
        bytes32 s;
        uint8 v;

        // ecrecover takes the r, s and v signature parameters, and the only way to get them is to use assembly.
        // solhint-disable-next-line no-inline-assembly
        assembly {
            r := mload(add(signature, 0x20))
            s := mload(add(signature, 0x40))
            v := byte(0, mload(add(signature, 0x60)))
        }

        address recoveredAddress = ecrecover(digest, v, r, s);

        // ecrecover returns the zero address on recover failure, so we need to handle that explicitly.
        return (recoveredAddress != address(0) && recoveredAddress == account);
    }

    function _toArraySignature(
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal pure returns (bytes memory) {
        bytes memory signature = new bytes(65);
        // solhint-disable-next-line no-inline-assembly
        assembly {
            mstore(add(signature, 32), r)
            mstore(add(signature, 64), s)
            mstore8(add(signature, 96), v)
        }

        return signature;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
 *
 * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
 * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
 * they need in their contracts using a combination of `abi.encode` and `keccak256`.
 *
 * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
 * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
 * ({_hashTypedDataV4}).
 *
 * The implementation of the domain separator was designed to be as efficient as possible while still properly updating
 * the chain id to protect against replay attacks on an eventual fork of the chain.
 *
 * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
 * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
 *
 * _Available since v3.4._
 */
abstract contract EIP712 {
    /* solhint-disable var-name-mixedcase */
    bytes32 private immutable _HASHED_NAME;
    bytes32 private immutable _HASHED_VERSION;
    bytes32 private immutable _TYPE_HASH;

    /* solhint-enable var-name-mixedcase */

    /**
     * @dev Initializes the domain separator and parameter caches.
     *
     * The meaning of `name` and `version` is specified in
     * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
     *
     * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
     * - `version`: the current major version of the signing domain.
     *
     * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
     * contract upgrade].
     */
    constructor(string memory name, string memory version) {
        _HASHED_NAME = keccak256(bytes(name));
        _HASHED_VERSION = keccak256(bytes(version));
        _TYPE_HASH = keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)");
    }

    /**
     * @dev Returns the domain separator for the current chain.
     */
    function _domainSeparatorV4() internal view virtual returns (bytes32) {
        return keccak256(abi.encode(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION, _getChainId(), address(this)));
    }

    /**
     * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
     * function returns the hash of the fully encoded EIP712 message for this domain.
     *
     * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
     *
     * ```solidity
     * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
     *     keccak256("Mail(address to,string contents)"),
     *     mailTo,
     *     keccak256(bytes(mailContents))
     * )));
     * address signer = ECDSA.recover(digest, signature);
     * ```
     */
    function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
        return keccak256(abi.encodePacked("\x19\x01", _domainSeparatorV4(), structHash));
    }

    function _getChainId() private view returns (uint256 chainId) {
        // Silence state mutability warning without generating bytecode.
        // See https://github.com/ethereum/solidity/issues/10090#issuecomment-741789128 and
        // https://github.com/ethereum/solidity/issues/2691
        this;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            chainId := chainid()
        }
    }
}

// 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/solidity-utils/helpers/BalancerErrors.sol";
import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/IAuthentication.sol";

/**
 * @dev Building block for performing access control on external functions.
 *
 * This contract is used via the `authenticate` modifier (or the `_authenticateCaller` function), which can be applied
 * to external functions to only make them callable by authorized accounts.
 *
 * Derived contracts must implement the `_canPerform` function, which holds the actual access control logic.
 */
abstract contract Authentication is IAuthentication {
    bytes32 private immutable _actionIdDisambiguator;

    /**
     * @dev The main purpose of the `actionIdDisambiguator` is to prevent accidental function selector collisions in
     * multi contract systems.
     *
     * There are two main uses for it:
     *  - if the contract is a singleton, any unique identifier can be used to make the associated action identifiers
     *    unique. The contract's own address is a good option.
     *  - if the contract belongs to a family that shares action identifiers for the same functions, an identifier
     *    shared by the entire family (and no other contract) should be used instead.
     */
    constructor(bytes32 actionIdDisambiguator) {
        _actionIdDisambiguator = actionIdDisambiguator;
    }

    /**
     * @dev Reverts unless the caller is allowed to call this function. Should only be applied to external functions.
     */
    modifier authenticate() {
        _authenticateCaller();
        _;
    }

    /**
     * @dev Reverts unless the caller is allowed to call the entry point function.
     */
    function _authenticateCaller() internal view {
        bytes32 actionId = getActionId(msg.sig);
        _require(_canPerform(actionId, msg.sender), Errors.SENDER_NOT_ALLOWED);
    }

    function getActionId(bytes4 selector) public view override returns (bytes32) {
        // Each external function is dynamically assigned an action identifier as the hash of the disambiguator and the
        // function selector. Disambiguation is necessary to avoid potential collisions in the function selectors of
        // multiple contracts.
        return keccak256(abi.encodePacked(_actionIdDisambiguator, selector));
    }

    function _canPerform(bytes32 actionId, address user) internal view virtual 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;

library BasePoolUserData {
    // Special ExitKind for all pools, used in Recovery Mode. Use the max 8-bit value to prevent conflicts
    // with future additions to the ExitKind enums (or any front-end code that maps to existing values)
    uint8 public constant RECOVERY_MODE_EXIT_KIND = 255;

    // Return true if this is the special exit kind.
    function isRecoveryModeExitKind(bytes memory self) internal pure returns (bool) {
        // Check for the "no data" case, or abi.decode would revert
        return self.length > 0 && abi.decode(self, (uint8)) == RECOVERY_MODE_EXIT_KIND;
    }

    // Parse the bptAmountIn out of the userData
    function recoveryModeExit(bytes memory self) internal pure returns (uint256 bptAmountIn) {
        (, bptAmountIn) = abi.decode(self, (uint8, 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;

/**
 * @dev Interface for the RecoveryMode module.
 */
interface IRecoveryMode {
    /**
     * @dev Emitted when the Recovery Mode status changes.
     */
    event RecoveryModeStateChanged(bool enabled);

    /**
     * @notice Enables Recovery Mode in the Pool, disabling protocol fee collection and allowing for safe proportional
     * exits with low computational complexity and no dependencies.
     */
    function enableRecoveryMode() external;

    /**
     * @notice Disables Recovery Mode in the Pool, restoring protocol fee collection and disallowing proportional exits.
     */
    function disableRecoveryMode() external;

    /**
     * @notice Returns true if the Pool is in Recovery Mode.
     */
    function inRecoveryMode() 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 "@balancer-labs/v2-interfaces/contracts/pool-utils/IRateProvider.sol";
import "@balancer-labs/v2-pool-utils/contracts/protocol-fees/ProtocolFeeCache.sol";
import "@balancer-labs/v2-pool-utils/contracts/protocol-fees/InvariantGrowthProtocolSwapFees.sol";

import "./BaseWeightedPool.sol";

abstract contract WeightedPoolProtocolFees is BaseWeightedPool, ProtocolFeeCache {
    using FixedPoint for uint256;
    using WordCodec for bytes32;

    // Rate providers are used only for computing yield fees; they do not inform swap/join/exit.
    IRateProvider internal immutable _rateProvider0;
    IRateProvider internal immutable _rateProvider1;
    IRateProvider internal immutable _rateProvider2;
    IRateProvider internal immutable _rateProvider3;
    IRateProvider internal immutable _rateProvider4;
    IRateProvider internal immutable _rateProvider5;
    IRateProvider internal immutable _rateProvider6;
    IRateProvider internal immutable _rateProvider7;

    bool internal immutable _exemptFromYieldFees;

    // All-time high value of the weighted product of the pool's token rates. Comparing such weighted products across
    // time provides a measure of the pool's growth resulting from rate changes. The pool also grows due to swap fees,
    // but that growth is captured in the invariant; rate growth is not.
    uint256 private _athRateProduct;

    // This Pool pays protocol fees by measuring the growth of the invariant between joins and exits. Since weights are
    // immutable, the invariant only changes due to accumulated swap fees, which saves gas by freeing the Pool
    // from performing any computation or accounting associated with protocol fees during swaps.
    // This mechanism requires keeping track of the invariant after the last join or exit.
    //
    // The maximum value of the invariant is the maximum allowable balance in the Vault (2**112) multiplied by the
    // largest possible scaling factor (10**18 for a zero decimals token). The largest invariant is then
    // 2**112 * 10**18 ~= 2**172, which means that to save gas we can place this in BasePool's `_miscData`.
    uint256 private constant _LAST_POST_JOINEXIT_INVARIANT_OFFSET = 0;
    uint256 private constant _LAST_POST_JOINEXIT_INVARIANT_BIT_LENGTH = 192;

    constructor(uint256 numTokens, IRateProvider[] memory rateProviders) {
        _require(numTokens <= 8, Errors.MAX_TOKENS);
        InputHelpers.ensureInputLengthMatch(numTokens, rateProviders.length);

        _exemptFromYieldFees = _getYieldFeeExemption(rateProviders);

        _rateProvider0 = rateProviders[0];
        _rateProvider1 = rateProviders[1];
        _rateProvider2 = numTokens > 2 ? rateProviders[2] : IRateProvider(0);
        _rateProvider3 = numTokens > 3 ? rateProviders[3] : IRateProvider(0);
        _rateProvider4 = numTokens > 4 ? rateProviders[4] : IRateProvider(0);
        _rateProvider5 = numTokens > 5 ? rateProviders[5] : IRateProvider(0);
        _rateProvider6 = numTokens > 6 ? rateProviders[6] : IRateProvider(0);
        _rateProvider7 = numTokens > 7 ? rateProviders[7] : IRateProvider(0);
    }

    function _getYieldFeeExemption(IRateProvider[] memory rateProviders) internal pure returns (bool) {
        // If we know that no rate providers are set then we can skip yield fees logic.
        // If any tokens have rate providers, then set `_exemptFromYieldFees` to false, otherwise leave it true.
        for (uint256 i = 0; i < rateProviders.length; i++) {
            if (rateProviders[i] != IRateProvider(0)) {
                return false;
            }
        }
        return true;
    }

    /**
     * @dev Returns whether the pool is exempt from protocol fees on yield.
     */
    function _isExemptFromYieldProtocolFees() internal view returns (bool) {
        return _exemptFromYieldFees;
    }

    /**
     * @notice Returns the value of the invariant after the last join or exit operation.
     */
    function getLastPostJoinExitInvariant() public view returns (uint256) {
        return
            _getMiscData().decodeUint(_LAST_POST_JOINEXIT_INVARIANT_OFFSET, _LAST_POST_JOINEXIT_INVARIANT_BIT_LENGTH);
    }

    /**
     * @notice Returns the all time high value for the weighted product of the Pool's tokens' rates.
     * @dev Yield protocol fees are only charged when this value is exceeded.
     */
    function getATHRateProduct() public view returns (uint256) {
        return _athRateProduct;
    }

    /**
     * @dev Returns the rate providers configured for each token (in the same order as registered).
     */
    function getRateProviders() external view returns (IRateProvider[] memory) {
        uint256 totalTokens = _getTotalTokens();
        IRateProvider[] memory providers = new IRateProvider[](totalTokens);

        // prettier-ignore
        {
            providers[0] = _rateProvider0;
            providers[1] = _rateProvider1;
            if (totalTokens > 2) { providers[2] = _rateProvider2; } else { return providers; }
            if (totalTokens > 3) { providers[3] = _rateProvider3; } else { return providers; }
            if (totalTokens > 4) { providers[4] = _rateProvider4; } else { return providers; }
            if (totalTokens > 5) { providers[5] = _rateProvider5; } else { return providers; }
            if (totalTokens > 6) { providers[6] = _rateProvider6; } else { return providers; }
            if (totalTokens > 7) { providers[7] = _rateProvider7; } else { return providers; }
        }

        return providers;
    }

    // Protocol Fees

    /**
     * @dev Returns the percentage of the Pool's supply which corresponds to protocol fees on swaps accrued by the Pool.
     * @param preJoinExitInvariant - The Pool's invariant prior to the join/exit *before* minting protocol fees.
     * @param protocolSwapFeePercentage - The percentage of swap fees which are paid to the protocol.
     * @return swapProtocolFeesPercentage - The percentage of the Pool which corresponds to protocol fees on swaps.
     */
    function _getSwapProtocolFeesPoolPercentage(uint256 preJoinExitInvariant, uint256 protocolSwapFeePercentage)
        internal
        view
        returns (uint256)
    {
        // Before joins and exits, we measure the growth of the invariant compared to the invariant after the last join
        // or exit, which will have been caused by swap fees, and use it to mint BPT as protocol fees. This dilutes all
        // LPs, which means that new LPs will join the pool debt-free, and exiting LPs will pay any amounts due
        // before leaving.

        return
            InvariantGrowthProtocolSwapFees.getProtocolOwnershipPercentage(
                preJoinExitInvariant.divDown(getLastPostJoinExitInvariant()),
                FixedPoint.ONE, // Supply has not changed so supplyGrowthRatio = 1
                protocolSwapFeePercentage
            );
    }

    /**
     * @dev Returns the percentage of the Pool's supply which corresponds to protocol fees on yield accrued by the Pool.
     * @param normalizedWeights - The Pool's normalized token weights.
     * @return yieldProtocolFeesPercentage - The percentage of the Pool which corresponds to protocol fees on yield.
     * @return athRateProduct - The new all-time-high rate product if it has increased, otherwise zero.
     */
    function _getYieldProtocolFeesPoolPercentage(uint256[] memory normalizedWeights)
        internal
        view
        returns (uint256, uint256)
    {
        if (_isExemptFromYieldProtocolFees()) return (0, 0);

        // Yield manifests in the Pool by individual tokens becoming more valuable, we convert this into comparable
        // units by applying a rate to get the equivalent balance of non-yield-bearing tokens
        //
        // non-yield-bearing balance = rate * yield-bearing balance
        //                       x'i = ri * xi
        //
        // To measure the amount of fees to pay due to yield, we take advantage of the fact that scaling the
        // Pool's balances results in a scaling factor being applied to the original invariant.
        //
        // I(r1 * x1, r2 * x2) = (r1 * x1)^w1 * (r2 * x2)^w2
        //                     = (r1)^w1 * (r2)^w2 * (x1)^w1 * (x2)^w2
        //                     = I(r1, r2) * I(x1, x2)
        //
        // We then only need to measure the growth of this scaling factor to measure how the value of the BPT token
        // increases due to yield; we can ignore the invariant calculated from the Pool's balances as these cancel.
        // We then have the result:
        //
        // invariantGrowthRatio = I(r1_new, r2_new) / I(r1_old, r2_old) = rateProduct / athRateProduct

        uint256 athRateProduct = _athRateProduct;
        uint256 rateProduct = _getRateProduct(normalizedWeights);

        // Only charge yield fees if we've exceeded the all time high of Pool value generated through yield.
        // i.e. if the Pool makes a loss through the yield strategies then it shouldn't charge fees until it's
        // been recovered.
        if (rateProduct <= athRateProduct) return (0, 0);

        return (
            InvariantGrowthProtocolSwapFees.getProtocolOwnershipPercentage(
                rateProduct.divDown(athRateProduct),
                FixedPoint.ONE, // Supply has not changed so supplyGrowthRatio = 1
                getProtocolFeePercentageCache(ProtocolFeeType.YIELD)
            ),
            rateProduct
        );
    }

    function _updateATHRateProduct(uint256 rateProduct) internal {
        _athRateProduct = rateProduct;
    }

    /**
     * @dev Returns the amount of BPT to be minted as protocol fees prior to processing a join/exit.
     * Note that this isn't a view function. This function automatically updates `_athRateProduct`  to ensure that
     * proper accounting is performed to prevent charging duplicate protocol fees.
     * @param preJoinExitInvariant - The Pool's invariant prior to the join/exit.
     * @param normalizedWeights - The Pool's normalized token weights.
     * @param preJoinExitSupply - The Pool's total supply prior to the join/exit *before* minting protocol fees.
     * @return protocolFeesToBeMinted -  The amount of BPT to be minted as protocol fees.
     * @return athRateProduct - The new all-time-high rate product if it has increased, otherwise zero.
     */
    function _getPreJoinExitProtocolFees(
        uint256 preJoinExitInvariant,
        uint256[] memory normalizedWeights,
        uint256 preJoinExitSupply
    ) internal view returns (uint256, uint256) {
        uint256 protocolSwapFeesPoolPercentage = _getSwapProtocolFeesPoolPercentage(
            preJoinExitInvariant,
            getProtocolFeePercentageCache(ProtocolFeeType.SWAP)
        );
        (uint256 protocolYieldFeesPoolPercentage, uint256 athRateProduct) = _getYieldProtocolFeesPoolPercentage(
            normalizedWeights
        );

        return (
            ProtocolFees.bptForPoolOwnershipPercentage(
                preJoinExitSupply,
                protocolSwapFeesPoolPercentage + protocolYieldFeesPoolPercentage
            ),
            athRateProduct
        );
    }

    /**
     * @dev Returns the amount of BPT to be minted to pay protocol fees on swap fees accrued during a join/exit.
     * Note that this isn't a view function. This function automatically updates `_lastPostJoinExitInvariant` to
     * ensure that proper accounting is performed to prevent charging duplicate protocol fees.
     * @param preJoinExitInvariant - The Pool's invariant prior to the join/exit.
     * @param preBalances - The Pool's balances prior to the join/exit.
     * @param balanceDeltas - The changes to the Pool's balances due to the join/exit.
     * @param normalizedWeights - The Pool's normalized token weights.
     * @param preJoinExitSupply - The Pool's total supply prior to the join/exit *after* minting protocol fees.
     * @param postJoinExitSupply - The Pool's total supply after the join/exit.
     */
    function _getPostJoinExitProtocolFees(
        uint256 preJoinExitInvariant,
        uint256[] memory preBalances,
        uint256[] memory balanceDeltas,
        uint256[] memory normalizedWeights,
        uint256 preJoinExitSupply,
        uint256 postJoinExitSupply
    ) internal returns (uint256) {
        bool isJoin = postJoinExitSupply >= preJoinExitSupply;

        // Compute the post balances by adding or removing the deltas.
        for (uint256 i = 0; i < preBalances.length; ++i) {
            preBalances[i] = isJoin
                ? SafeMath.add(preBalances[i], balanceDeltas[i])
                : SafeMath.sub(preBalances[i], balanceDeltas[i]);
        }

        // preBalances have now been mutated to reflect the postJoinExit balances.
        uint256 postJoinExitInvariant = WeightedMath._calculateInvariant(normalizedWeights, preBalances);
        uint256 protocolSwapFeePercentage = getProtocolFeePercentageCache(ProtocolFeeType.SWAP);

        _updatePostJoinExit(postJoinExitInvariant);
        // We return immediately if the fee percentage is zero to avoid unnecessary computation.
        if (protocolSwapFeePercentage == 0) return 0;

        uint256 protocolFeeAmount = InvariantGrowthProtocolSwapFees.calcDueProtocolFees(
            postJoinExitInvariant.divDown(preJoinExitInvariant),
            preJoinExitSupply,
            postJoinExitSupply,
            protocolSwapFeePercentage
        );

        return protocolFeeAmount;
    }

    function _updatePostJoinExit(uint256 postJoinExitInvariant) internal virtual override {
        // After all joins and exits we store the post join/exit invariant in order to compute growth due to swap fees
        // in the next one.
        _setMiscData(
            _getMiscData().insertUint(
                postJoinExitInvariant,
                _LAST_POST_JOINEXIT_INVARIANT_OFFSET,
                _LAST_POST_JOINEXIT_INVARIANT_BIT_LENGTH
            )
        );
    }

    // Helper functions

    /**
     * @notice Returns the contribution to the total rate product from a token with the given weight and rate provider.
     */
    function _getRateFactor(uint256 normalizedWeight, IRateProvider provider) internal view returns (uint256) {
        return provider == IRateProvider(0) ? FixedPoint.ONE : provider.getRate().powDown(normalizedWeight);
    }

    /**
     * @dev Returns the weighted product of all the token rates.
     */
    function _getRateProduct(uint256[] memory normalizedWeights) internal view returns (uint256) {
        uint256 totalTokens = normalizedWeights.length;

        uint256 rateProduct = FixedPoint.mulDown(
            _getRateFactor(normalizedWeights[0], _rateProvider0),
            _getRateFactor(normalizedWeights[1], _rateProvider1)
        );

        if (totalTokens > 2) {
            rateProduct = rateProduct.mulDown(_getRateFactor(normalizedWeights[2], _rateProvider2));
        } else {
            return rateProduct;
        }
        if (totalTokens > 3) {
            rateProduct = rateProduct.mulDown(_getRateFactor(normalizedWeights[3], _rateProvider3));
        } else {
            return rateProduct;
        }
        if (totalTokens > 4) {
            rateProduct = rateProduct.mulDown(_getRateFactor(normalizedWeights[4], _rateProvider4));
        } else {
            return rateProduct;
        }
        if (totalTokens > 5) {
            rateProduct = rateProduct.mulDown(_getRateFactor(normalizedWeights[5], _rateProvider5));
        } else {
            return rateProduct;
        }
        if (totalTokens > 6) {
            rateProduct = rateProduct.mulDown(_getRateFactor(normalizedWeights[6], _rateProvider6));
        } else {
            return rateProduct;
        }
        if (totalTokens > 7) {
            rateProduct = rateProduct.mulDown(_getRateFactor(normalizedWeights[7], _rateProvider7));
        }

        return rateProduct;
    }
}

// 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;

interface IRateProvider {
    /**
     * @dev Returns an 18 decimal fixed point number that is the exchange rate of the token to some other underlying
     * token. The meaning of this rate depends on the context.
     */
    function getRate() external view 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;

import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/BalancerErrors.sol";
import "@balancer-labs/v2-interfaces/contracts/standalone-utils/IProtocolFeePercentagesProvider.sol";

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

import "../RecoveryMode.sol";

/**
 * @dev The Vault does not provide the protocol swap fee percentage in swap hooks (as swaps don't typically need this
 * value), so for swaps that need this value, we would have to to fetch it ourselves from the
 * ProtocolFeePercentagesProvider. Additionally, other protocol fee types (such as Yield or AUM) can only be obtained
 * by making said call.
 *
 * However, these values change so rarely that it doesn't make sense to perform the required calls to get the current
 * values in every single user interaction. Instead, we keep a local copy that can be permissionlessly updated by anyone
 * with the real value. We also pack these values together, performing a single storage read to get them all.
 *
 * When initialized with a special sentinel value, the swap fee is delegated, meaning the mutable protocol swap fee
 * cache is set to the current value stored in the ProtocolFeePercentagesProvider, and can be updated by anyone with a
 * call to `updateProtocolFeePercentageCache`. Any other value means the protocol swap fee is fixed, so it is instead
 * stored in the immutable `_fixedProtocolSwapFeePercentage`.
 */
abstract contract ProtocolFeeCache is RecoveryMode {
    using SafeCast for uint256;

    IProtocolFeePercentagesProvider private immutable _protocolFeeProvider;

    // Protocol Fee Percentages can never be larger than 100% (1e18), which fits in ~59 bits, so using 64 for each type
    // is sufficient.
    struct FeeTypeCache {
        uint64 swapFee;
        uint64 yieldFee;
        uint64 aumFee;
    }

    FeeTypeCache private _cache;

    event ProtocolFeePercentageCacheUpdated(uint256 indexed feeType, uint256 protocolFeePercentage);

    // Swap fees can be set to a fixed value at construction, or delegated to the ProtocolFeePercentagesProvider if
    // passing the special sentinel value.
    uint256 public constant DELEGATE_PROTOCOL_SWAP_FEES_SENTINEL = type(uint256).max;

    bool private immutable _delegatedProtocolSwapFees;

    // Only valid when `_delegatedProtocolSwapFees` is false
    uint256 private immutable _fixedProtocolSwapFeePercentage;

    constructor(IProtocolFeePercentagesProvider protocolFeeProvider, uint256 protocolSwapFeePercentage) {
        // Protocol swap fees are delegated to the value reported by the ProtocolFeePercentagesProvider if the sentinel
        // value is passed.
        bool delegatedProtocolSwapFees = protocolSwapFeePercentage == DELEGATE_PROTOCOL_SWAP_FEES_SENTINEL;

        _delegatedProtocolSwapFees = delegatedProtocolSwapFees;
        _protocolFeeProvider = protocolFeeProvider;

        _updateProtocolFeeCache(protocolFeeProvider, ProtocolFeeType.YIELD);
        _updateProtocolFeeCache(protocolFeeProvider, ProtocolFeeType.AUM);

        if (delegatedProtocolSwapFees) {
            _updateProtocolFeeCache(protocolFeeProvider, ProtocolFeeType.SWAP);
        } else {
            _require(
                protocolSwapFeePercentage <= protocolFeeProvider.getFeeTypeMaximumPercentage(ProtocolFeeType.SWAP),
                Errors.SWAP_FEE_PERCENTAGE_TOO_HIGH
            );

            // We cannot set `_fixedProtocolSwapFeePercentage` here due to it being immutable so instead we must set it
            // in the main function scope with a value based on whether protocol fees are delegated.

            // Emit an event as we do in `_updateProtocolFeeCache` to appear the same to offchain indexers.
            emit ProtocolFeePercentageCacheUpdated(ProtocolFeeType.SWAP, protocolSwapFeePercentage);
        }

        // As `_fixedProtocolSwapFeePercentage` is immutable we must set a value, but just set to zero if it's not used.
        _fixedProtocolSwapFeePercentage = delegatedProtocolSwapFees ? 0 : protocolSwapFeePercentage;
    }

    /**
     * @dev Returns the cached protocol fee percentage. If `getProtocolSwapFeeDelegation()` is false, this value is
     * immutable for swap fee queries. Alternatively, it will track the global fee percentage set in the
     * ProtocolFeePercentagesProvider.
     */
    function getProtocolFeePercentageCache(uint256 feeType) public view returns (uint256) {
        if (inRecoveryMode()) {
            return 0;
        }

        if (feeType == ProtocolFeeType.SWAP) {
            return getProtocolSwapFeeDelegation() ? _cache.swapFee : _fixedProtocolSwapFeePercentage;
        } else if (feeType == ProtocolFeeType.YIELD) {
            return _cache.yieldFee;
        } else if (feeType == ProtocolFeeType.AUM) {
            return _cache.aumFee;
        } else {
            _revert(Errors.UNHANDLED_FEE_TYPE);
        }
    }

    /**
     * @dev Can be called by anyone to update the cached fee percentages (swap fee is only updated when delegated).
     * Updates the cache to the latest value set by governance.
     */
    function updateProtocolFeePercentageCache() external {
        _beforeProtocolFeeCacheUpdate();

        if (getProtocolSwapFeeDelegation()) {
            _updateProtocolFeeCache(_protocolFeeProvider, ProtocolFeeType.SWAP);
        }

        _updateProtocolFeeCache(_protocolFeeProvider, ProtocolFeeType.YIELD);
        _updateProtocolFeeCache(_protocolFeeProvider, ProtocolFeeType.AUM);
    }

    /**
     * @dev Override in derived contracts to perform some action before the cache is updated. This is typically relevant
     * to Pools that incur protocol debt between operations. To avoid altering the amount due retroactively, this debt
     * needs to be paid before the fee percentages change.
     */
    function _beforeProtocolFeeCacheUpdate() internal virtual {}

    /**
     * @dev Returns whether this Pool tracks protocol swap fee changes in the IProtocolFeePercentagesProvider.
     */
    function getProtocolSwapFeeDelegation() public view returns (bool) {
        return _delegatedProtocolSwapFees;
    }

    function _updateProtocolFeeCache(IProtocolFeePercentagesProvider protocolFeeProvider, uint256 feeType) private {
        uint256 currentValue = protocolFeeProvider.getFeeTypePercentage(feeType);

        if (feeType == ProtocolFeeType.SWAP) {
            _cache.swapFee = currentValue.toUint64();
        } else if (feeType == ProtocolFeeType.YIELD) {
            _cache.yieldFee = currentValue.toUint64();
        } else if (feeType == ProtocolFeeType.AUM) {
            _cache.aumFee = currentValue.toUint64();
        } else {
            _revert(Errors.UNHANDLED_FEE_TYPE);
        }

        emit ProtocolFeePercentageCacheUpdated(feeType, currentValue);
    }
}

// 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-solidity-utils/contracts/math/FixedPoint.sol";
import "@balancer-labs/v2-solidity-utils/contracts/math/Math.sol";
import "./ProtocolFees.sol";

library InvariantGrowthProtocolSwapFees {
    using FixedPoint for uint256;

    function getProtocolOwnershipPercentage(
        uint256 invariantGrowthRatio,
        uint256 supplyGrowthRatio,
        uint256 protocolSwapFeePercentage
    ) internal pure returns (uint256) {
        // Joins and exits are symmetrical; for simplicity, we consider a join, where the invariant and supply
        // both increase.

        // |-------------------------|-- original invariant * invariantGrowthRatio
        // |   increase from fees    |
        // |-------------------------|-- original invariant * supply growth ratio (fee-less invariant)
        // |                         |
        // | increase from balances  |
        // |-------------------------|-- original invariant
        // |                         |
        // |                         |  |------------------|-- currentSupply
        // |                         |  |    BPT minted    |
        // |                         |  |------------------|-- previousSupply
        // |   original invariant    |  |  original supply |
        // |_________________________|  |__________________|
        //
        // If the join is proportional, the invariant and supply will likewise increase proportionally,
        // so the growth ratios (invariantGrowthRatio / supplyGrowthRatio) will be equal. In this case, we do not charge
        // any protocol fees.
        // We also charge no protocol fees in the case where `invariantGrowthRatio < supplyGrowthRatio` to avoid
        // potential underflows, however this should only occur in extremely low volume actions due solely to rounding
        // error.

        if ((supplyGrowthRatio >= invariantGrowthRatio) || (protocolSwapFeePercentage == 0)) return 0;

        // If the join is non-proportional, the supply increase will be proportionally less than the invariant increase,
        // since the BPT minted will be based on fewer tokens (because swap fees are not included). So the supply growth
        // is due entirely to the balance changes, while the invariant growth also includes swap fees.
        //
        // To isolate the amount of increase by fees then, we multiply the original invariant by the supply growth
        // ratio to get the "feeless invariant". The difference between the final invariant and this value is then
        // the amount of the invariant due to fees, which we convert to a percentage by normalizing against the
        // final invariant. This is expressed as the expression below:
        //
        // invariantGrowthFromFees = currentInvariant - supplyGrowthRatio * previousInvariant
        //
        // We then divide through by current invariant so the LHS can be identified as the fraction of the pool which
        // is made up of accumulated swap fees.
        //
        // swapFeesPercentage = 1 - supplyGrowthRatio * previousInvariant / currentInvariant
        //
        // We then define `invariantGrowthRatio` in a similar fashion to `supplyGrowthRatio` to give the result:
        //
        // swapFeesPercentage = 1 - supplyGrowthRatio / invariantGrowthRatio
        //
        // Using this form allows us to consider only the ratios of the two invariants, rather than their absolute
        // values: a useful property, as this is sometimes easier than calculating the full invariant twice.

        // We've already checked that `supplyGrowthRatio` is smaller than `invariantGrowthRatio`, and hence their ratio
        // smaller than FixedPoint.ONE, allowing for unchecked arithmetic.
        uint256 swapFeesPercentage = FixedPoint.ONE - supplyGrowthRatio.divDown(invariantGrowthRatio);

        // We then multiply by the protocol swap fee percentage to get the fraction of the pool which the protocol
        // should own once fees have been collected.
        return swapFeesPercentage.mulDown(protocolSwapFeePercentage);
    }

    function calcDueProtocolFees(
        uint256 invariantGrowthRatio,
        uint256 previousSupply,
        uint256 currentSupply,
        uint256 protocolSwapFeePercentage
    ) internal pure returns (uint256) {
        uint256 protocolOwnershipPercentage = getProtocolOwnershipPercentage(
            invariantGrowthRatio,
            currentSupply.divDown(previousSupply),
            protocolSwapFeePercentage
        );

        return ProtocolFees.bptForPoolOwnershipPercentage(currentSupply, protocolOwnershipPercentage);
    }
}

// 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;

/**
 * @dev Source of truth for all Protocol Fee percentages, that is, how much the protocol charges certain actions. Some
 * of these values may also be retrievable from other places (such as the swap fee percentage), but this is the
 * preferred source nonetheless.
 */
interface IProtocolFeePercentagesProvider {
    // All fee percentages are 18-decimal fixed point numbers, so e.g. 1e18 = 100% and 1e16 = 1%.

    // Emitted when a new fee type is registered.
    event ProtocolFeeTypeRegistered(uint256 indexed feeType, string name, uint256 maximumPercentage);

    // Emitted when the value of a fee type changes.
    // IMPORTANT: it is possible for a third party to modify the SWAP and FLASH_LOAN fee type values directly in the
    // ProtocolFeesCollector, which will result in this event not being emitted despite their value changing. Such usage
    // of the ProtocolFeesCollector is however discouraged: all state-changing interactions with it should originate in
    // this contract.
    event ProtocolFeePercentageChanged(uint256 indexed feeType, uint256 percentage);

    /**
     * @dev Registers a new fee type in the system, making it queryable via `getFeeTypePercentage` and `getFeeTypeName`,
     * as well as configurable via `setFeeTypePercentage`.
     *
     * `feeType` can be any arbitrary value (that is not in use).
     *
     * It is not possible to de-register fee types, nor change their name or maximum value.
     */
    function registerFeeType(
        uint256 feeType,
        string memory name,
        uint256 maximumValue,
        uint256 initialValue
    ) external;

    /**
     * @dev Returns true if `feeType` has been registered and can be queried.
     */
    function isValidFeeType(uint256 feeType) external view returns (bool);

    /**
     * @dev Returns true if `value` is a valid percentage value for `feeType`.
     */
    function isValidFeeTypePercentage(uint256 feeType, uint256 value) external view returns (bool);

    /**
     * @dev Sets the percentage value for `feeType` to `newValue`.
     *
     * IMPORTANT: it is possible for a third party to modify the SWAP and FLASH_LOAN fee type values directly in the
     * ProtocolFeesCollector, without invoking this function. This will result in the `ProtocolFeePercentageChanged`
     * event not being emitted despite their value changing. Such usage of the ProtocolFeesCollector is however
     * discouraged: only this contract should be granted permission to call `setSwapFeePercentage` and
     * `setFlashLoanFeePercentage`.
     */
    function setFeeTypePercentage(uint256 feeType, uint256 newValue) external;

    /**
     * @dev Returns the current percentage value for `feeType`. This is the preferred mechanism for querying these -
     * whenever possible, use this fucntion instead of e.g. querying the ProtocolFeesCollector.
     */
    function getFeeTypePercentage(uint256 feeType) external view returns (uint256);

    /**
     * @dev Returns `feeType`'s maximum value.
     */
    function getFeeTypeMaximumPercentage(uint256 feeType) external view returns (uint256);

    /**
     * @dev Returns `feeType`'s name.
     */
    function getFeeTypeName(uint256 feeType) external view returns (string memory);
}

library ProtocolFeeType {
    // This list is not exhaustive - more fee types can be added to the system. It is expected for this list to be
    // extended with new fee types as they are registered, to keep them all in one place and reduce
    // likelihood of user error.

    // solhint-disable private-vars-leading-underscore
    uint256 internal constant SWAP = 0;
    uint256 internal constant FLASH_LOAN = 1;
    uint256 internal constant YIELD = 2;
    uint256 internal constant AUM = 3;
    // solhint-enable private-vars-leading-underscore
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.7.0;

import "@balancer-labs/v2-interfaces/contracts/solidity-utils/helpers/BalancerErrors.sol";

/**
 * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
 * checks.
 *
 * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
 * easily result in undesired exploitation or bugs, since developers usually
 * assume that overflows raise errors. `SafeCast` restores this intuition by
 * reverting the transaction when such an operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 *
 * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
 * all math on `uint256` and `int256` and then downcasting.
 */
library SafeCast {
    /**
     * @dev Converts an unsigned uint256 into a signed int256.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxInt256.
     */
    function toInt256(uint256 value) internal pure returns (int256) {
        _require(value >> 255 == 0, Errors.SAFE_CAST_VALUE_CANT_FIT_INT256);
        return int256(value);
    }

    /**
     * @dev Converts an unsigned uint256 into an unsigned uint64.
     *
     * Requirements:
     *
     * - input must be less than or equal to maxUint64.
     */
    function toUint64(uint256 value) internal pure returns (uint64) {
        _require(value <= type(uint64).max, Errors.SAFE_CAST_VALUE_CANT_FIT_UINT64);
        return uint64(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;

import "@balancer-labs/v2-solidity-utils/contracts/math/FixedPoint.sol";
import "@balancer-labs/v2-solidity-utils/contracts/math/Math.sol";

library ProtocolFees {
    using FixedPoint for uint256;

    /**
     * @dev Calculates the amount of BPT necessary to give ownership of a given percentage of the Pool.
     * Note that this function reverts if `poolPercentage` >= 100%, it's expected that the caller will enforce this.
     * @param totalSupply - The total supply of the pool prior to minting BPT.
     * @param poolOwnershipPercentage - The desired ownership percentage of the pool to have as a result of minting BPT.
     * @return bptAmount - The amount of BPT to mint such that it is `poolPercentage` of the resultant total supply.
     */
    function bptForPoolOwnershipPercentage(uint256 totalSupply, uint256 poolOwnershipPercentage)
        internal
        pure
        returns (uint256)
    {
        // If we mint some amount `bptAmount` of BPT then the percentage ownership of the pool this grants is given by:
        // `poolOwnershipPercentage = bptAmount / (totalSupply + bptAmount)`.
        // Solving for `bptAmount`, we arrive at:
        // `bptAmount = totalSupply * poolOwnershipPercentage / (1 - poolOwnershipPercentage)`.
        return Math.divDown(Math.mul(totalSupply, poolOwnershipPercentage), poolOwnershipPercentage.complement());
    }
}

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

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"components":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"symbol","type":"string"},{"internalType":"contract IERC20[]","name":"tokens","type":"address[]"},{"internalType":"uint256[]","name":"normalizedWeights","type":"uint256[]"},{"internalType":"contract IRateProvider[]","name":"rateProviders","type":"address[]"},{"internalType":"address[]","name":"assetManagers","type":"address[]"},{"internalType":"uint256","name":"swapFeePercentage","type":"uint256"}],"internalType":"struct WeightedPool.NewPoolParams","name":"params","type":"tuple"},{"internalType":"contract IVault","name":"vault","type":"address"},{"internalType":"contract IProtocolFeePercentagesProvider","name":"protocolFeeProvider","type":"address"},{"internalType":"uint256","name":"pauseWindowDuration","type":"uint256"},{"internalType":"uint256","name":"bufferPeriodDuration","type":"uint256"},{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"paused","type":"bool"}],"name":"PausedStateChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"feeType","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"protocolFeePercentage","type":"uint256"}],"name":"ProtocolFeePercentageCacheUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bool","name":"enabled","type":"bool"}],"name":"RecoveryModeStateChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"swapFeePercentage","type":"uint256"}],"name":"SwapFeePercentageChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"DELEGATE_PROTOCOL_SWAP_FEES_SENTINEL","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"disableRecoveryMode","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"enableRecoveryMode","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"getATHRateProduct","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"selector","type":"bytes4"}],"name":"getActionId","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getActualSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getAuthorizer","outputs":[{"internalType":"contract IAuthorizer","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDomainSeparator","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getInvariant","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getLastPostJoinExitInvariant","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"getNextNonce","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getNormalizedWeights","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getPausedState","outputs":[{"internalType":"bool","name":"paused","type":"bool"},{"internalType":"uint256","name":"pauseWindowEndTime","type":"uint256"},{"internalType":"uint256","name":"bufferPeriodEndTime","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getPoolId","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"feeType","type":"uint256"}],"name":"getProtocolFeePercentageCache","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getProtocolFeesCollector","outputs":[{"internalType":"contract IProtocolFeesCollector","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getProtocolSwapFeeDelegation","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getRateProviders","outputs":[{"internalType":"contract IRateProvider[]","name":"","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getScalingFactors","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getSwapFeePercentage","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getVault","outputs":[{"internalType":"contract IVault","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"inRecoveryMode","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"poolId","type":"bytes32"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256[]","name":"balances","type":"uint256[]"},{"internalType":"uint256","name":"lastChangeBlock","type":"uint256"},{"internalType":"uint256","name":"protocolSwapFeePercentage","type":"uint256"},{"internalType":"bytes","name":"userData","type":"bytes"}],"name":"onExitPool","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"poolId","type":"bytes32"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256[]","name":"balances","type":"uint256[]"},{"internalType":"uint256","name":"lastChangeBlock","type":"uint256"},{"internalType":"uint256","name":"protocolSwapFeePercentage","type":"uint256"},{"internalType":"bytes","name":"userData","type":"bytes"}],"name":"onJoinPool","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"enum IVault.SwapKind","name":"kind","type":"uint8"},{"internalType":"contract IERC20","name":"tokenIn","type":"address"},{"internalType":"contract IERC20","name":"tokenOut","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes32","name":"poolId","type":"bytes32"},{"internalType":"uint256","name":"lastChangeBlock","type":"uint256"},{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"bytes","name":"userData","type":"bytes"}],"internalType":"struct IPoolSwapStructs.SwapRequest","name":"request","type":"tuple"},{"internalType":"uint256","name":"balanceTokenIn","type":"uint256"},{"internalType":"uint256","name":"balanceTokenOut","type":"uint256"}],"name":"onSwap","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"pause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"poolId","type":"bytes32"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256[]","name":"balances","type":"uint256[]"},{"internalType":"uint256","name":"lastChangeBlock","type":"uint256"},{"internalType":"uint256","name":"protocolSwapFeePercentage","type":"uint256"},{"internalType":"bytes","name":"userData","type":"bytes"}],"name":"queryExit","outputs":[{"internalType":"uint256","name":"bptIn","type":"uint256"},{"internalType":"uint256[]","name":"amountsOut","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"poolId","type":"bytes32"},{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256[]","name":"balances","type":"uint256[]"},{"internalType":"uint256","name":"lastChangeBlock","type":"uint256"},{"internalType":"uint256","name":"protocolSwapFeePercentage","type":"uint256"},{"internalType":"bytes","name":"userData","type":"bytes"}],"name":"queryJoin","outputs":[{"internalType":"uint256","name":"bptOut","type":"uint256"},{"internalType":"uint256[]","name":"amountsIn","type":"uint256[]"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"token","type":"address"},{"internalType":"bytes","name":"poolConfig","type":"bytes"}],"name":"setAssetManagerPoolConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"swapFeePercentage","type":"uint256"}],"name":"setSwapFeePercentage","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"updateProtocolFeePercentageCache","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

-----Decoded View---------------
Arg [0] : params (tuple): System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput]
Arg [1] : vault (address): 0xBA12222222228d8Ba445958a75a0704d566BF2C8
Arg [2] : protocolFeeProvider (address): 0x97207B095e4D5C9a6e4cfbfcd2C3358E03B90c4A
Arg [3] : pauseWindowDuration (uint256): 7686030
Arg [4] : bufferPeriodDuration (uint256): 2592000
Arg [5] : owner (address): 0xBA1BA1ba1BA1bA1bA1Ba1BA1ba1BA1bA1ba1ba1B

-----Encoded View---------------
29 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [1] : 000000000000000000000000ba12222222228d8ba445958a75a0704d566bf2c8
Arg [2] : 00000000000000000000000097207b095e4d5c9a6e4cfbfcd2c3358e03b90c4a
Arg [3] : 000000000000000000000000000000000000000000000000000000000075478e
Arg [4] : 0000000000000000000000000000000000000000000000000000000000278d00
Arg [5] : 000000000000000000000000ba1ba1ba1ba1ba1ba1ba1ba1ba1ba1ba1ba1ba1b
Arg [6] : 00000000000000000000000000000000000000000000000000000000000000e0
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000120
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000160
Arg [9] : 00000000000000000000000000000000000000000000000000000000000001c0
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000220
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000280
Arg [12] : 0000000000000000000000000000000000000000000000000008e1bc9bf04000
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000017
Arg [14] : 42616c616e6365722035307773744554482d35304c444f000000000000000000
Arg [15] : 000000000000000000000000000000000000000000000000000000000000000e
Arg [16] : 35305753544554482d35304c444f000000000000000000000000000000000000
Arg [17] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [18] : 0000000000000000000000005a98fcbea516cf06857215779fd812ca3bef1b32
Arg [19] : 0000000000000000000000007f39c581f595b53c5cb19bd0b3f8da6c935e2ca0
Arg [20] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [21] : 00000000000000000000000000000000000000000000000006f05b59d3b20000
Arg [22] : 00000000000000000000000000000000000000000000000006f05b59d3b20000
Arg [23] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [24] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [25] : 00000000000000000000000072d07d7dca67b8a406ad1ec34ce969c90bfee768
Arg [26] : 0000000000000000000000000000000000000000000000000000000000000002
Arg [27] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [28] : 0000000000000000000000000000000000000000000000000000000000000000