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// SPDX-License-Identifier: Unlicense

pragma solidity ^0.8.0;

import "../interfaces/IStructNonceManager.sol";

error StructNonceManager_InvalidState();

/**                       .-==+++++++++++++++++++++++++++++++=-:
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               *##################%*##################*###################%:
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          :####################################################################*
          .%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%=

       .-+*##############################*-                          .=########*+=.
     -######################################+:                     -###############%=
    *#########################################%=                :+####################
   *##############################################-          .+%######################%
  .##################################################-     =%##########################-
  :####################################################%#%#############################-
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    *#################################################################################
     -#############################################################################%=
        -+*#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%##+=.

          .#%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%#=
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            :################################################################*
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              .############################################################-
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                          :-=+******************************++=:.

 * @title Manage struct nonces
 * @author Augminted Labs, LLC
 */
contract StructNonceManager is IStructNonceManager {
    mapping(uint256 => bool) private _nonceConsumed;

    constructor () {}

    /**
     * @notice Returns if a nonce has been consumed
     * @param nonce Nonce to return state of
     * @return bool State of specified nonce
     */
    function nonceConsumed(uint256 nonce) external view returns (bool) {
        return _nonceConsumed[nonce];
    }

    /**
     * @notice Throw if specified nonce is not in specified state
     * @param nonce Target nonce
     * @param consumed Target state
     */
    function requireNonceState(uint256 nonce, bool consumed) external view {
        if (_nonceConsumed[nonce] != consumed) revert StructNonceManager_InvalidState();
    }

    /**
     * @notice Consume specified nonce
     * @param nonce Nonce to consume
     */
    function consumeNonce(uint256 nonce) external payable {
        _nonceConsumed[nonce] = true;
    }
}

// SPDX-License-Identifier: Unlicense

pragma solidity ^0.8.0;

interface IStructNonceManager {
    function nonceConsumed(uint256 nonce) external view returns (bool);
    function requireNonceState(uint256 nonce, bool consumed) external view;
    function consumeNonce(uint256 nonce) external payable;
}

{
  "optimizer": {
    "enabled": true,
    "runs": 3333
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"StructNonceManager_InvalidState","type":"error"},{"inputs":[{"internalType":"uint256","name":"nonce","type":"uint256"}],"name":"consumeNonce","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"nonce","type":"uint256"}],"name":"nonceConsumed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"nonce","type":"uint256"},{"internalType":"bool","name":"consumed","type":"bool"}],"name":"requireNonceState","outputs":[],"stateMutability":"view","type":"function"}]

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