{
    "Function": "_updateAndCheckCollateral",
    "File": "src/V3Vault.sol",
    "Parent Contracts": [
        "src/interfaces/IErrors.sol",
        "lib/openzeppelin-contracts/contracts/token/ERC721/IERC721Receiver.sol",
        "src/interfaces/IVault.sol",
        "lib/openzeppelin-contracts/contracts/interfaces/IERC4626.sol",
        "lib/openzeppelin-contracts/contracts/access/Ownable.sol",
        "lib/openzeppelin-contracts/contracts/utils/Multicall.sol",
        "lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol",
        "lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol",
        "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol",
        "lib/openzeppelin-contracts/contracts/utils/Context.sol"
    ],
    "High-Level Calls": [
        "SafeCast",
        "INonfungiblePositionManager",
        "SafeCast",
        "SafeCast",
        "SafeCast"
    ],
    "Internal Calls": [
        "_convertToAssets",
        "totalSupply",
        "_convertToAssets",
        "revert CollateralValueLimit()",
        "revert CollateralValueLimit()",
        "_convertToAssets"
    ],
    "Library Calls": [
        "toUint192",
        "toUint192",
        "toUint192",
        "toUint192"
    ],
    "Low-Level Calls": [],
    "Code": "function _updateAndCheckCollateral(\n        uint256 tokenId,\n        uint256 debtExchangeRateX96,\n        uint256 lendExchangeRateX96,\n        uint256 oldShares,\n        uint256 newShares\n    ) internal {\n        if (oldShares != newShares) {\n            (,, address token0, address token1,,,,,,,,) = nonfungiblePositionManager.positions(tokenId);\n\n            // remove previous collateral - add new collateral\n            if (oldShares > newShares) {\n                tokenConfigs[token0].totalDebtShares -= SafeCast.toUint192(oldShares - newShares);\n                tokenConfigs[token1].totalDebtShares -= SafeCast.toUint192(oldShares - newShares);\n            } else {\n                tokenConfigs[token0].totalDebtShares += SafeCast.toUint192(newShares - oldShares);\n                tokenConfigs[token1].totalDebtShares += SafeCast.toUint192(newShares - oldShares);\n\n                // check if current value of used collateral is more than allowed limit\n                // if collateral is decreased - never revert\n                uint256 lentAssets = _convertToAssets(totalSupply(), lendExchangeRateX96, Math.Rounding.Up);\n                uint256 collateralValueLimitFactorX32 = tokenConfigs[token0].collateralValueLimitFactorX32;\n                if (\n                    collateralValueLimitFactorX32 < type(uint32).max\n                        && _convertToAssets(tokenConfigs[token0].totalDebtShares, debtExchangeRateX96, Math.Rounding.Up)\n                            > lentAssets * collateralValueLimitFactorX32 / Q32\n                ) {\n                    revert CollateralValueLimit();\n                }\n                collateralValueLimitFactorX32 = tokenConfigs[token1].collateralValueLimitFactorX32;\n                if (\n                    collateralValueLimitFactorX32 < type(uint32).max\n                        && _convertToAssets(tokenConfigs[token1].totalDebtShares, debtExchangeRateX96, Math.Rounding.Up)\n                            > lentAssets * collateralValueLimitFactorX32 / Q32\n                ) {\n                    revert CollateralValueLimit();\n                }\n            }\n        }\n    }"
}