{
    "Function": "deposit",
    "File": "contracts/contracts/Gauge.sol",
    "Parent Contracts": [],
    "High-Level Calls": [
        "IVoter",
        "IVoter",
        "IVotingEscrow"
    ],
    "Internal Calls": [
        "require(bool)",
        "_writeSupplyCheckpoint",
        "require(bool)",
        "derivedBalance",
        "lock",
        "_safeTransferFrom",
        "require(bool)",
        "_writeCheckpoint",
        "_updateRewardForAllTokens"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function deposit(uint amount, uint tokenId) public lock {\n        require(amount > 0);\n\n        _updateRewardForAllTokens();\n\n        _safeTransferFrom(stake, msg.sender, address(this), amount);\n        totalSupply += amount;\n        balanceOf[msg.sender] += amount;\n\n        if (tokenId > 0) {\n            require(IVotingEscrow(_ve).ownerOf(tokenId) == msg.sender);\n            if (tokenIds[msg.sender] == 0) {\n                tokenIds[msg.sender] = tokenId;\n                IVoter(voter).attachTokenToGauge(tokenId, msg.sender);\n            }\n            require(tokenIds[msg.sender] == tokenId);\n        } else {\n            tokenId = tokenIds[msg.sender];\n        }\n\n        uint _derivedBalance = derivedBalances[msg.sender];\n        derivedSupply -= _derivedBalance;\n        _derivedBalance = derivedBalance(msg.sender);\n        derivedBalances[msg.sender] = _derivedBalance;\n        derivedSupply += _derivedBalance;\n\n        _writeCheckpoint(msg.sender, _derivedBalance);\n        _writeSupplyCheckpoint();\n\n        IVoter(voter).emitDeposit(tokenId, msg.sender, amount);\n        emit Deposit(msg.sender, tokenId, amount);\n    }"
}