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// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;



contract PackingSwapPaths {
    function getEncodedPacked(
        address inToken,
        uint24 feeIn,
        address[] memory proxies,
        uint24[] memory feesOut,
        address target
    ) external pure returns (bytes memory encoded) {
        if (proxies.length > 0 ) {
            require(proxies.length == feesOut.length, "Proxies and fees have different length");
            bytes memory proxiesPacked;
            for(uint i=0; i<proxies.length; i++) {
                proxiesPacked = abi.encodePacked(proxiesPacked,proxies[i], feesOut[i]);
            }
            encoded = abi.encodePacked(inToken, feeIn, proxiesPacked, target);
        } else {
            require(feesOut.length > 0, "feesOut[0] is missing");
            encoded = abi.encodePacked(inToken, feesOut[0], target);
        }
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"address","name":"inToken","type":"address"},{"internalType":"uint24","name":"feeIn","type":"uint24"},{"internalType":"address[]","name":"proxies","type":"address[]"},{"internalType":"uint24[]","name":"feesOut","type":"uint24[]"},{"internalType":"address","name":"target","type":"address"}],"name":"getEncodedPacked","outputs":[{"internalType":"bytes","name":"encoded","type":"bytes"}],"stateMutability":"pure","type":"function"}]

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