{
    "Function": "burn",
    "File": "src/LBPair.sol",
    "Parent Contracts": [
        "src/interfaces/ILBPair.sol",
        "src/libraries/ReentrancyGuardUpgradeable.sol",
        "src/LBToken.sol",
        "src/interfaces/ILBToken.sol"
    ],
    "High-Level Calls": [
        "TreeMath",
        "Math512Bits",
        "Math512Bits",
        "TokenHelper",
        "SafeCast",
        "TokenHelper"
    ],
    "Internal Calls": [
        "mstore(uint256,uint256)",
        "sstore(uint256,uint256)",
        "totalSupply",
        "_burn",
        "keccak256(uint256,uint256)",
        "nonReentrant",
        "_getBin",
        "mstore(uint256,uint256)",
        "revert LBPair__InsufficientLiquidityBurned(uint256)",
        "_getReservesAndId"
    ],
    "Library Calls": [
        "mulDivRoundDown",
        "safeTransfer",
        "mulDivRoundDown",
        "removeFromTree",
        "safe24",
        "safeTransfer"
    ],
    "Low-Level Calls": [],
    "Code": "function burn(\n        uint256[] memory _ids,\n        uint256[] memory _amounts,\n        address _to\n    ) external override nonReentrant returns (uint256 amountX, uint256 amountY) {\n        (uint256 _pairReserveX, uint256 _pairReserveY, uint256 _activeId) = _getReservesAndId();\n        unchecked {\n            for (uint256 i; i < _ids.length; ++i) {\n                uint24 _id = _ids[i].safe24();\n                uint256 _amountToBurn = _amounts[i];\n\n                if (_amountToBurn == 0) revert LBPair__InsufficientLiquidityBurned(_id);\n\n                (uint256 _reserveX, uint256 _reserveY) = _getBin(_id);\n\n                uint256 _totalSupply = totalSupply(_id);\n\n                uint256 _amountX;\n                uint256 _amountY;\n\n                if (_id <= _activeId) {\n                    _amountY = _amountToBurn.mulDivRoundDown(_reserveY, _totalSupply);\n\n                    amountY += _amountY;\n                    _reserveY -= _amountY;\n                    _pairReserveY -= _amountY;\n                }\n                if (_id >= _activeId) {\n                    _amountX = _amountToBurn.mulDivRoundDown(_reserveX, _totalSupply);\n\n                    amountX += _amountX;\n                    _reserveX -= _amountX;\n                    _pairReserveX -= _amountX;\n                }\n\n                if (_reserveX == 0 && _reserveY == 0) _tree.removeFromTree(_id);\n\n                // Optimized `_bins[_id] = _bin` to do only 1 sstore\n                assembly {\n                    mstore(0, _id)\n                    mstore(32, _bins.slot)\n                    let slot := keccak256(0, 64)\n\n                    let reserves := add(shl(_OFFSET_BIN_RESERVE_Y, _reserveY), _reserveX)\n                    sstore(slot, reserves)\n                }\n\n                _burn(address(this), _id, _amountToBurn);\n\n                emit LiquidityRemoved(msg.sender, _to, _id, _amountToBurn, _amountX, _amountY);\n            }\n        }\n\n        // Optimization to do only 2 sstore\n        _pairInformation.reserveX = uint136(_pairReserveX);\n        _pairInformation.reserveY = uint136(_pairReserveY);\n\n        tokenX.safeTransfer(_to, amountX);\n        tokenY.safeTransfer(_to, amountY);\n    }"
}