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// Sources flattened with hardhat v2.2.1 https://hardhat.org
// File contracts/libraries/MultiSend.sol
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;
/// @title Multi Send - Allows to batch multiple transactions into one.
/// @author Nick Dodson - <nick.dodson@consensys.net>
/// @author Gonçalo Sá - <goncalo.sa@consensys.net>
/// @author Stefan George - <stefan@gnosis.io>
/// @author Richard Meissner - <richard@gnosis.io>
contract MultiSend {
    address private immutable multisendSingleton;
    constructor() {
        multisendSingleton = address(this);
    }
    /// @dev Sends multiple transactions and reverts all if one fails.
    /// @param transactions Encoded transactions. Each transaction is encoded as a packed bytes of
    ///                     operation as a uint8 with 0 for a call or 1 for a delegatecall (=> 1 byte),
    ///                     to as a address (=> 20 bytes),
    ///                     value as a uint256 (=> 32 bytes),
    ///                     data length as a uint256 (=> 32 bytes),
    ///                     data as bytes.
    ///                     see abi.encodePacked for more information on packed encoding
    /// @notice This method is payable as delegatecalls keep the msg.value from the previous call
    ///         If the calling method (e.g. execTransaction) received ETH this would revert otherwise
    function multiSend(bytes memory transactions) public payable {
        require(address(this) != multisendSingleton, "MultiSend should only be called via delegatecall");
        // solhint-disable-next-line no-inline-assembly
        assembly {
            let length := mload(transactions)
            let i := 0x20
            for {
                // Pre block is not used in "while mode"
            } lt(i, length) {
                // Post block is not used in "while mode"
            } {
                // First byte of the data is the operation.
 
 
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