{
    "Function": "getSampleAt",
    "File": "src/libraries/Oracle.sol",
    "Parent Contracts": [],
    "High-Level Calls": [
        "Samples",
        "Samples",
        "Samples",
        "Samples",
        "Samples",
        "Samples",
        "Samples",
        "Samples",
        "Samples",
        "Samples",
        "Samples",
        "Samples",
        "Samples",
        "Samples"
    ],
    "Internal Calls": [
        "binarySearch",
        "revert Oracle__LookUpTimestampTooOld(uint256,uint256)",
        "revert Oracle__NotInitialized()",
        "addmod(uint256,uint256,uint256)"
    ],
    "Library Calls": [
        "cumulativeVolatilityAccumulated",
        "cumulativeId",
        "timestamp",
        "cumulativeBinCrossed",
        "cumulativeId",
        "cumulativeBinCrossed",
        "cumulativeVolatilityAccumulated",
        "cumulativeBinCrossed",
        "timestamp",
        "cumulativeId",
        "cumulativeVolatilityAccumulated",
        "timestamp",
        "timestamp",
        "timestamp"
    ],
    "Low-Level Calls": [],
    "Code": "function getSampleAt(\n        bytes32[65_535] storage _oracle,\n        uint256 _activeSize,\n        uint256 _activeId,\n        uint256 _lookUpTimestamp\n    )\n        internal\n        view\n        returns (\n            uint256 timestamp,\n            uint256 cumulativeId,\n            uint256 cumulativeVolatilityAccumulated,\n            uint256 cumulativeBinCrossed\n        )\n    {\n        if (_activeSize == 0) revert Oracle__NotInitialized();\n\n        // Oldest sample\n        uint256 _nextId;\n        assembly {\n            _nextId := addmod(_activeId, 1, _activeSize)\n        }\n        bytes32 _sample = _oracle[_nextId];\n        timestamp = _sample.timestamp();\n        if (timestamp > _lookUpTimestamp) revert Oracle__LookUpTimestampTooOld(timestamp, _lookUpTimestamp);\n\n        // Most recent sample\n        if (_activeSize != 1) {\n            _sample = _oracle[_activeId];\n            timestamp = _sample.timestamp();\n\n            if (timestamp > _lookUpTimestamp) {\n                bytes32 _next;\n                (_sample, _next) = binarySearch(_oracle, _activeId, _lookUpTimestamp, _activeSize);\n\n                if (_sample != _next) {\n                    uint256 _weightPrev = _next.timestamp() - _lookUpTimestamp; // _next.timestamp() - _sample.timestamp() - (_lookUpTimestamp - _sample.timestamp())\n                    uint256 _weightNext = _lookUpTimestamp - _sample.timestamp(); // _next.timestamp() - _sample.timestamp() - (_next.timestamp() - _lookUpTimestamp)\n                    uint256 _totalWeight = _weightPrev + _weightNext; // _next.timestamp() - _sample.timestamp()\n\n                    cumulativeId =\n                        (_sample.cumulativeId() * _weightPrev + _next.cumulativeId() * _weightNext) /\n                        _totalWeight;\n                    cumulativeVolatilityAccumulated =\n                        (_sample.cumulativeVolatilityAccumulated() *\n                            _weightPrev +\n                            _next.cumulativeVolatilityAccumulated() *\n                            _weightNext) /\n                        _totalWeight;\n                    cumulativeBinCrossed =\n                        (_sample.cumulativeBinCrossed() * _weightPrev + _next.cumulativeBinCrossed() * _weightNext) /\n                        _totalWeight;\n                    return (_lookUpTimestamp, cumulativeId, cumulativeVolatilityAccumulated, cumulativeBinCrossed);\n                }\n            }\n        }\n\n        timestamp = _sample.timestamp();\n        cumulativeId = _sample.cumulativeId();\n        cumulativeVolatilityAccumulated = _sample.cumulativeVolatilityAccumulated();\n        cumulativeBinCrossed = _sample.cumulativeBinCrossed();\n    }"
}