{
    "Function": "stir",
    "File": "contracts/Cauldron.sol",
    "Parent Contracts": [
        "contracts/utils/access/AccessControl.sol"
    ],
    "High-Level Calls": [],
    "Internal Calls": [
        "_level",
        "_level",
        "auth",
        "require(bool,string)",
        "require(bool,string)",
        "vaultData",
        "require(bool,string)",
        "vaultData",
        "require(bool,string)",
        "require(bool,string)"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function stir(bytes12 from, bytes12 to, uint128 ink, uint128 art)\n        external\n        auth\n        returns (DataTypes.Balances memory, DataTypes.Balances memory)\n    {\n        require (from != to, \"Identical vaults\");\n        (DataTypes.Vault memory vaultFrom, , DataTypes.Balances memory balancesFrom) = vaultData(from, false);\n        (DataTypes.Vault memory vaultTo, , DataTypes.Balances memory balancesTo) = vaultData(to, false);\n\n        if (ink > 0) {\n            require (vaultFrom.ilkId == vaultTo.ilkId, \"Different collateral\");\n            balancesFrom.ink -= ink;\n            balancesTo.ink += ink;\n        }\n        if (art > 0) {\n            require (vaultFrom.seriesId == vaultTo.seriesId, \"Different series\");\n            balancesFrom.art -= art;\n            balancesTo.art += art;\n        }\n\n        balances[from] = balancesFrom;\n        balances[to] = balancesTo;\n\n        if (ink > 0) require(_level(vaultFrom, balancesFrom, series[vaultFrom.seriesId]) >= 0, \"Undercollateralized at origin\");\n        if (art > 0) require(_level(vaultTo, balancesTo, series[vaultTo.seriesId]) >= 0, \"Undercollateralized at destination\");\n\n        emit VaultStirred(from, to, ink, art);\n        return (balancesFrom, balancesTo);\n    }"
}