abstract contract NativeOrdersCancellation is
    INativeOrdersEvents,
    NativeOrdersInfo
{
    using LibRichErrorsV06 for bytes;

    /// @dev Highest bit of a uint256, used to flag cancelled orders.
    uint256 private constant HIGH_BIT = 1 << 255;

    constructor(
        address zeroExAddress
    )
        internal
        NativeOrdersInfo(zeroExAddress)
    {
        // solhint-disable no-empty-blocks
    }

    /// @dev Cancel a single limit order. The caller must be the maker or a valid order signer.
    ///      Silently succeeds if the order has already been cancelled.
    /// @param order The limit order.
    function cancelLimitOrder(LibNativeOrder.LimitOrder memory order)
        public
    {
        bytes32 orderHash = getLimitOrderHash(order);
        if (msg.sender != order.maker && !isValidOrderSigner(order.maker, msg.sender)) {
            LibNativeOrdersRichErrors.OnlyOrderMakerAllowed(
                orderHash,
                msg.sender,
                order.maker
            ).rrevert();
        }
        _cancelOrderHash(orderHash, order.maker);
    }

    /// @dev Cancel a single RFQ order. The caller must be the maker or a valid order signer.
    ///      Silently succeeds if the order has already been cancelled.
    /// @param order The RFQ order.
    function cancelRfqOrder(LibNativeOrder.RfqOrder memory order)
        public
    {
        bytes32 orderHash = getRfqOrderHash(order);
        if (msg.sender != order.maker && !isValidOrderSigner(order.maker, msg.sender)) {
            LibNativeOrdersRichErrors.OnlyOrderMakerAllowed(
                orderHash,
                msg.sender,
                order.maker
            ).rrevert();
        }
        _cancelOrderHash(orderHash, order.maker);
    }

    /// @dev Cancel multiple limit orders. The caller must be the maker or a valid order signer.
    ///      Silently succeeds if the order has already been cancelled.
    /// @param orders The limit orders.
    function batchCancelLimitOrders(LibNativeOrder.LimitOrder[] memory orders)
        public
    {
        for (uint256 i = 0; i < orders.length; ++i) {
            cancelLimitOrder(orders[i]);
        }
    }

    /// @dev Cancel multiple RFQ orders. The caller must be the maker or a valid order signer.
    ///      Silently succeeds if the order has already been cancelled.
    /// @param orders The RFQ orders.
    function batchCancelRfqOrders(LibNativeOrder.RfqOrder[] memory orders)
        public
    {
        for (uint256 i = 0; i < orders.length; ++i) {
            cancelRfqOrder(orders[i]);
        }
    }

    /// @dev Cancel all limit orders for a given maker and pair with a salt less
    ///      than the value provided. The caller must be the maker. Subsequent
    ///      calls to this function with the same caller and pair require the
    ///      new salt to be >= the old salt.
    /// @param makerToken The maker token.
    /// @param takerToken The taker token.
    /// @param minValidSalt The new minimum valid salt.
    function cancelPairLimitOrders(
        IERC20TokenV06 makerToken,
        IERC20TokenV06 takerToken,
        uint256 minValidSalt
    )
        public
    {
        _cancelPairLimitOrders(msg.sender, makerToken, takerToken, minValidSalt);
    }

    /// @dev Cancel all limit orders for a given maker and pair with a salt less
    ///      than the value provided. The caller must be a signer registered to the maker.
    ///      Subsequent calls to this function with the same caller and pair require the
    ///      new salt to be >= the old salt.
    /// @param maker the maker for whom the msg.sender is the signer.
    /// @param makerToken The maker token.
    /// @param takerToken The taker token.
    /// @param minValidSalt The new minimum valid salt.
    function cancelPairLimitOrdersWithSigner(
        address maker,
        IERC20TokenV06 makerToken,
        IERC20TokenV06 takerToken,
        uint256 minValidSalt
    )
        public
    {
        // verify that the signer is authorized for the maker
        if (!isValidOrderSigner(maker, msg.sender)) {
            LibNativeOrdersRichErrors.InvalidSignerError(
                maker,
                msg.sender
            ).rrevert();
        }

        _cancelPairLimitOrders(maker, makerToken, takerToken, minValidSalt);
    }

    /// @dev Cancel all limit orders for a given maker and pair with a salt less
    ///      than the value provided. The caller must be the maker. Subsequent
    ///      calls to this function with the same caller and pair require the
    ///      new salt to be >= the old salt.
    /// @param makerTokens The maker tokens.
    /// @param takerTokens The taker tokens.
    /// @param minValidSalts The new minimum valid salts.
    function batchCancelPairLimitOrders(
        IERC20TokenV06[] memory makerTokens,
        IERC20TokenV06[] memory takerTokens,
        uint256[] memory minValidSalts
    )
        public
    {
        require(
            makerTokens.length == takerTokens.length &&
            makerTokens.length == minValidSalts.length,
            "NativeOrdersFeature/MISMATCHED_PAIR_ORDERS_ARRAY_LENGTHS"
        );

        for (uint256 i = 0; i < makerTokens.length; ++i) {
            _cancelPairLimitOrders(
                msg.sender,
                makerTokens[i],
                takerTokens[i],
                minValidSalts[i]
            );
        }
    }

    /// @dev Cancel all limit orders for a given maker and pair with a salt less
    ///      than the value provided. The caller must be a signer registered to the maker.
    ///      Subsequent calls to this function with the same caller and pair require the
    ///      new salt to be >= the old salt.
    /// @param maker the maker for whom the msg.sender is the signer.
    /// @param makerTokens The maker tokens.
    /// @param takerTokens The taker tokens.
    /// @param minValidSalts The new minimum valid salts.
    function batchCancelPairLimitOrdersWithSigner(
        address maker,
        IERC20TokenV06[] memory makerTokens,
        IERC20TokenV06[] memory takerTokens,
        uint256[] memory minValidSalts
    )
        public
    {
        require(
            makerTokens.length == takerTokens.length &&
            makerTokens.length == minValidSalts.length,
            "NativeOrdersFeature/MISMATCHED_PAIR_ORDERS_ARRAY_LENGTHS"
        );

        if (!isValidOrderSigner(maker, msg.sender)) {
            LibNativeOrdersRichErrors.InvalidSignerError(
                maker,
                msg.sender
            ).rrevert();
        }

        for (uint256 i = 0; i < makerTokens.length; ++i) {
            _cancelPairLimitOrders(
                maker,
                makerTokens[i],
                takerTokens[i],
                minValidSalts[i]
            );
        }
    }

    /// @dev Cancel all RFQ orders for a given maker and pair with a salt less
    ///      than the value provided. The caller must be the maker. Subsequent
    ///      calls to this function with the same caller and pair require the
    ///      new salt to be >= the old salt.
    /// @param makerToken The maker token.
    /// @param takerToken The taker token.
    /// @param minValidSalt The new minimum valid salt.
    function cancelPairRfqOrders(
        IERC20TokenV06 makerToken,
        IERC20TokenV06 takerToken,
        uint256 minValidSalt
    )
        public
    {
        _cancelPairRfqOrders(msg.sender, makerToken, takerToken, minValidSalt);
    }

    /// @dev Cancel all RFQ orders for a given maker and pair with a salt less
    ///      than the value provided. The caller must be a signer registered to the maker.
    ///      Subsequent calls to this function with the same caller and pair require the
    ///      new salt to be >= the old salt.
    /// @param maker the maker for whom the msg.sender is the signer.
    /// @param makerToken The maker token.
    /// @param takerToken The taker token.
    /// @param minValidSalt The new minimum valid salt.
    function cancelPairRfqOrdersWithSigner(
        address maker,
        IERC20TokenV06 makerToken,
        IERC20TokenV06 takerToken,
        uint256 minValidSalt
    )
        public
    {
        if (!isValidOrderSigner(maker, msg.sender)) {
            LibNativeOrdersRichErrors.InvalidSignerError(
                maker,
                msg.sender
            ).rrevert();
        }

        _cancelPairRfqOrders(maker, makerToken, takerToken, minValidSalt);
    }

    /// @dev Cancel all RFQ orders for a given maker and pair with a salt less
    ///      than the value provided. The caller must be the maker. Subsequent
    ///      calls to this function with the same caller and pair require the
    ///      new salt to be >= the old salt.
    /// @param makerTokens The maker tokens.
    /// @param takerTokens The taker tokens.
    /// @param minValidSalts The new minimum valid salts.
    function batchCancelPairRfqOrders(
        IERC20TokenV06[] memory makerTokens,
        IERC20TokenV06[] memory takerTokens,
        uint256[] memory minValidSalts
    )
        public
    {
        require(
            makerTokens.length == takerTokens.length &&
            makerTokens.length == minValidSalts.length,
            "NativeOrdersFeature/MISMATCHED_PAIR_ORDERS_ARRAY_LENGTHS"
        );

        for (uint256 i = 0; i < makerTokens.length; ++i) {
            _cancelPairRfqOrders(
                msg.sender,
                makerTokens[i],
                takerTokens[i],
                minValidSalts[i]
            );
        }
    }

    /// @dev Cancel all RFQ orders for a given maker and pairs with salts less
    ///      than the values provided. The caller must be a signer registered to the maker.
    ///      Subsequent calls to this function with the same caller and pair require the
    ///      new salt to be >= the old salt.
    /// @param maker the maker for whom the msg.sender is the signer.
    /// @param makerTokens The maker tokens.
    /// @param takerTokens The taker tokens.
    /// @param minValidSalts The new minimum valid salts.
    function batchCancelPairRfqOrdersWithSigner(
        address maker,
        IERC20TokenV06[] memory makerTokens,
        IERC20TokenV06[] memory takerTokens,
        uint256[] memory minValidSalts
    )
        public
    {
        require(
            makerTokens.length == takerTokens.length &&
            makerTokens.length == minValidSalts.length,
            "NativeOrdersFeature/MISMATCHED_PAIR_ORDERS_ARRAY_LENGTHS"
        );

        if (!isValidOrderSigner(maker, msg.sender)) {
            LibNativeOrdersRichErrors.InvalidSignerError(
                maker,
                msg.sender
            ).rrevert();
        }

        for (uint256 i = 0; i < makerTokens.length; ++i) {
            _cancelPairRfqOrders(
                maker,
                makerTokens[i],
                takerTokens[i],
                minValidSalts[i]
            );
        }
    }

    /// @dev Cancel a limit or RFQ order directly by its order hash.
    /// @param orderHash The order's order hash.
    /// @param maker The order's maker.
    function _cancelOrderHash(bytes32 orderHash, address maker)
        private
    {
        LibNativeOrdersStorage.Storage storage stor =
            LibNativeOrdersStorage.getStorage();
        // Set the high bit on the raw taker token fill amount to indicate
        // a cancel. It's OK to cancel twice.
        stor.orderHashToTakerTokenFilledAmount[orderHash] |= HIGH_BIT;

        emit OrderCancelled(orderHash, maker);
    }

    /// @dev Cancel all RFQ orders for a given maker and pair with a salt less
    ///      than the value provided.
    /// @param maker The target maker address
    /// @param makerToken The maker token.
    /// @param takerToken The taker token.
    /// @param minValidSalt The new minimum valid salt.
    function _cancelPairRfqOrders(
        address maker,
        IERC20TokenV06 makerToken,
        IERC20TokenV06 takerToken,
        uint256 minValidSalt
    )
        private
    {
        LibNativeOrdersStorage.Storage storage stor =
            LibNativeOrdersStorage.getStorage();

        uint256 oldMinValidSalt =
            stor.rfqOrdersMakerToMakerTokenToTakerTokenToMinValidOrderSalt
                [maker]
                [address(makerToken)]
                [address(takerToken)];

        // New min salt must >= the old one.
        if (oldMinValidSalt > minValidSalt) {
            LibNativeOrdersRichErrors.
                CancelSaltTooLowError(minValidSalt, oldMinValidSalt)
                    .rrevert();
        }

        stor.rfqOrdersMakerToMakerTokenToTakerTokenToMinValidOrderSalt
            [maker]
            [address(makerToken)]
            [address(takerToken)] = minValidSalt;

        emit PairCancelledRfqOrders(
            maker,
            address(makerToken),
            address(takerToken),
            minValidSalt
        );
    }

    /// @dev Cancel all limit orders for a given maker and pair with a salt less
    ///      than the value provided.
    /// @param maker The target maker address
    /// @param makerToken The maker token.
    /// @param takerToken The taker token.
    /// @param minValidSalt The new minimum valid salt.
    function _cancelPairLimitOrders(
        address maker,
        IERC20TokenV06 makerToken,
        IERC20TokenV06 takerToken,
        uint256 minValidSalt
    )
        private
    {
        LibNativeOrdersStorage.Storage storage stor =
            LibNativeOrdersStorage.getStorage();

        uint256 oldMinValidSalt =
            stor.limitOrdersMakerToMakerTokenToTakerTokenToMinValidOrderSalt
                [maker]
                [address(makerToken)]
                [address(takerToken)];

        // New min salt must >= the old one.
        if (oldMinValidSalt > minValidSalt) {
            LibNativeOrdersRichErrors.
                CancelSaltTooLowError(minValidSalt, oldMinValidSalt)
                    .rrevert();
        }

        stor.limitOrdersMakerToMakerTokenToTakerTokenToMinValidOrderSalt
            [maker]
            [address(makerToken)]
            [address(takerToken)] = minValidSalt;

        emit PairCancelledLimitOrders(
            maker,
            address(makerToken),
            address(takerToken),
            minValidSalt
        );
    }
}
/// @dev Feature for cancelling limit and RFQ orders.
function batchCancelLimitOrders(LibNativeOrder.LimitOrder[] memory orders)
        public
    {
        for (uint256 i = 0; i < orders.length; ++i) {
            cancelLimitOrder(orders[i]);
        }
    }
/// @dev Cancel multiple limit orders. The caller must be the maker or a valid order signer.
///      Silently succeeds if the order has already been cancelled.
/// @param orders The limit orders.