{
    "Function": "getTransition",
    "File": "packages/protocol/contracts/L1/libs/LibUtils.sol",
    "Parent Contracts": [],
    "High-Level Calls": [],
    "Internal Calls": [
        "revert L1_TRANSITION_NOT_FOUND()",
        "revert L1_INVALID_BLOCK_ID()",
        "revert L1_BLOCK_MISMATCH()",
        "getTransitionId"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function getTransition(\n        TaikoData.State storage _state,\n        TaikoData.Config memory _config,\n        uint64 _blockId,\n        bytes32 _parentHash\n    )\n        external\n        view\n        returns (TaikoData.TransitionState storage)\n    {\n        TaikoData.SlotB memory b = _state.slotB;\n        if (_blockId < b.lastVerifiedBlockId || _blockId >= b.numBlocks) {\n            revert L1_INVALID_BLOCK_ID();\n        }\n\n        uint64 slot = _blockId % _config.blockRingBufferSize;\n        TaikoData.Block storage blk = _state.blocks[slot];\n        if (blk.blockId != _blockId) revert L1_BLOCK_MISMATCH();\n\n        uint32 tid = getTransitionId(_state, blk, slot, _parentHash);\n        if (tid == 0) revert L1_TRANSITION_NOT_FOUND();\n\n        return _state.transitions[slot][tid];\n    }"
}