{
    "Function": "_estimateItem",
    "File": "contracts/oracles/estimators/CurveLPEstimator.sol",
    "Parent Contracts": [
        "contracts/interfaces/IEstimator.sol"
    ],
    "High-Level Calls": [
        "ICurveCrypto",
        "SafeMath",
        "IOracle",
        "IAddressProvider",
        "SafeMath",
        "IOracle",
        "ICurveRegistry",
        "ICurveRegistry",
        "ICurveRegistry",
        "SafeMath",
        "SafeMath",
        "ICurveRegistry",
        "IOracle",
        "IERC20NonStandard",
        "SafeMath",
        "SafeMath",
        "ICurveRegistry",
        "IOracle"
    ],
    "Internal Calls": [
        "revert(string)",
        "revert(string)"
    ],
    "Library Calls": [
        "div",
        "mul",
        "mul",
        "div",
        "mul",
        "div"
    ],
    "Low-Level Calls": [],
    "Code": "function _estimateItem(uint256 balance, address token) private view returns (int256) {\n        if (balance == 0) return 0;\n        if (token == TRICRYPTO2) { //Hack because tricrypto2 is not registered\n            uint256 lpPrice = ICurveCrypto(TRICRYPTO2_ORACLE).lp_price();\n            return IOracle(msg.sender).estimateItem(lpPrice.mul(balance).div(TRICRYPTO2_PRECISION), USDT);\n        } else {\n            ICurveRegistry registry = ICurveRegistry(ADDRESS_PROVIDER.get_registry());\n            address pool = registry.get_pool_from_lp_token(token);\n            uint256 assetType = registry.get_pool_asset_type(pool);\n            if (assetType < 4) {\n                uint256 virtualPrice = registry.get_virtual_price_from_lp_token(token);\n                uint256 virtualBalance =\n                    balance.mul(\n                        virtualPrice\n                    ).div(10**18);\n                if (assetType == 0) {\n                    // USD\n                    return IOracle(msg.sender).estimateItem(virtualBalance, SUSD);\n                } else if (assetType == 1) {\n                    // ETH\n                    return int256(virtualBalance);\n                } else if (assetType == 2) {\n                    // BTC\n                    return IOracle(msg.sender).estimateItem(virtualBalance, SBTC);\n                } else {\n                    // Other (Link or Euro)\n                    (uint256 coinsInPool, ) = registry.get_n_coins(pool);\n                    address[8] memory coins = registry.get_coins(pool);\n                    for (uint256 i = 0; i < coinsInPool; i++) {\n                        address underlyingToken = coins[i];\n                        uint256 decimals = uint256(IERC20NonStandard(underlyingToken).decimals());\n                        uint256 convertedBalance = virtualBalance;\n                        if (decimals < 18) {\n                          convertedBalance = convertedBalance.div(10**(18-decimals));\n                        } else if (decimals > 18) {\n                          convertedBalance = convertedBalance.mul(10**(decimals-18));\n                        }\n                        try IOracle(msg.sender).estimateItem(convertedBalance, underlyingToken) returns (int256 value) {\n                            if (value > 0) {\n                              return value;\n                            }\n                        } catch (bytes memory) {\n                            continue;\n                        }\n                    }\n                    revert(\"Asset not found\");\n                }\n            } else {\n                // Other crypto pools\n                revert(\"Not supported\");\n            }\n        }\n    }"
}