{
    "Function": "addToPosition",
    "File": "contracts/Trading.sol",
    "Parent Contracts": [
        "contracts/interfaces/ITrading.sol",
        "contracts/utils/MetaContext.sol",
        "node_modules/@openzeppelin/contracts/access/Ownable.sol",
        "node_modules/@openzeppelin/contracts/utils/Context.sol"
    ],
    "High-Level Calls": [
        "ITradingExtension",
        "ITradingExtension",
        "IPosition",
        "IPosition",
        "IPosition",
        "ITradingExtension",
        "ITradingExtension",
        "ITradingExtension"
    ],
    "Internal Calls": [
        "_checkVault",
        "_checkDelay",
        "_updateFunding",
        "_validateProxy",
        "_handleDeposit",
        "_checkOwner",
        "_handleOpenFees",
        "revert(string)"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function addToPosition(\n        uint _id,\n        uint _addMargin,\n        PriceData calldata _priceData,\n        bytes calldata _signature,\n        address _stableVault,\n        address _marginAsset,\n        ERC20PermitData calldata _permitData,\n        address _trader\n    )\n        external\n    {\n        _validateProxy(_trader);\n        _checkOwner(_id, _trader);\n        _checkDelay(_id, true);\n        IPosition.Trade memory _trade = position.trades(_id);\n        tradingExtension.validateTrade(_trade.asset, _trade.tigAsset, _trade.margin + _addMargin, _trade.leverage);\n        _checkVault(_stableVault, _marginAsset);\n        if (_trade.orderType != 0) revert(\"4\"); //IsLimit\n        uint _fee = _handleOpenFees(_trade.asset, _addMargin*_trade.leverage/1e18, _trader, _trade.tigAsset, false);\n        _handleDeposit(\n            _trade.tigAsset,\n            _marginAsset,\n            _addMargin - _fee,\n            _stableVault,\n            _permitData,\n            _trader\n        );\n        position.setAccInterest(_id);\n        unchecked {\n            (uint256 _price,) = tradingExtension.getVerifiedPrice(_trade.asset, _priceData, _signature, _trade.direction ? 1 : 2);\n            uint _positionSize = (_addMargin - _fee) * _trade.leverage / 1e18;\n            if (_trade.direction) {\n                tradingExtension.modifyLongOi(_trade.asset, _trade.tigAsset, true, _positionSize);\n            } else {\n                tradingExtension.modifyShortOi(_trade.asset, _trade.tigAsset, true, _positionSize);     \n            }\n            _updateFunding(_trade.asset, _trade.tigAsset);\n            _addMargin -= _fee;\n            uint _newMargin = _trade.margin + _addMargin;\n            uint _newPrice = _trade.price*_trade.margin/_newMargin + _price*_addMargin/_newMargin;\n\n            position.addToPosition(\n                _trade.id,\n                _newMargin,\n                _newPrice\n            );\n            \n            emit AddToPosition(_trade.id, _newMargin, _newPrice, _trade.trader);\n        }\n    }"
}