{
    "Function": "burnSynth",
    "File": "contracts/Pool.sol",
    "Parent Contracts": [
        "contracts/interfaces/iBEP20.sol"
    ],
    "High-Level Calls": [
        "iDAO",
        "iDAO",
        "iBEP20",
        "iDAO",
        "iUTILS",
        "iUTILS",
        "iSYNTH",
        "iSYNTHFACTORY",
        "iBEP20",
        "iBEP20"
    ],
    "Internal Calls": [
        "_DAO",
        "_DAO",
        "_addPoolMetrics",
        "_DAO",
        "_decrementPoolBalances",
        "require(bool,string)"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function burnSynth(address synthIN, address member) external returns(uint outputAmount, uint fee) {\n        require(iSYNTHFACTORY(_DAO().SYNTHFACTORY()).isSynth(synthIN) == true, \"!synth\"); // Must be a valid Synth\n        uint _actualInputSynth = iBEP20(synthIN).balanceOf(address(this)); // Get received SYNTH amount\n        uint outputBase = iUTILS(_DAO().UTILS()).calcSwapOutput(_actualInputSynth, tokenAmount, baseAmount); // Calculate value of swapping relevant underlying TOKEN to SPARTA\n        fee = iUTILS(_DAO().UTILS()).calcSwapFee(_actualInputSynth, tokenAmount, baseAmount); // Calc slip fee in SPARTA\n        iBEP20(synthIN).transfer(synthIN, _actualInputSynth); // Transfer SYNTH to relevant synth contract\n        iSYNTH(synthIN).burnSynth(); // Burn the SYNTH units\n        _decrementPoolBalances(outputBase, 0); // Update recorded SPARTA amount\n        iBEP20(BASE).transfer(member, outputBase); // Transfer SPARTA to user\n        _addPoolMetrics(fee); // Add slip fee to the revenue metrics\n        emit BurnSynth(member, BASE, outputBase, TOKEN, _actualInputSynth);\n      return (outputBase, fee);\n    }"
}