{
    "Function": "provideLiquidity",
    "File": "contracts/BalLiquidityProvider.sol",
    "Parent Contracts": [],
    "High-Level Calls": [
        "SafeERC20",
        "IVault",
        "IERC20",
        "IERC20",
        "IVault",
        "SafeERC20",
        "IERC20",
        "IERC20"
    ],
    "Internal Calls": [
        "require(bool,string)",
        "require(bool,string)",
        "require(bool,string)",
        "require(bool,string)",
        "require(bool,string)",
        "require(bool,string)",
        "require(bool,string)"
    ],
    "Library Calls": [
        "safeApprove",
        "safeApprove"
    ],
    "Low-Level Calls": [],
    "Code": "function provideLiquidity(bytes32 _poolId, IVault.JoinPoolRequest memory _request) public {\n        require(msg.sender == provider, \"!auth\");\n        require(_request.assets.length == 2 && _request.maxAmountsIn.length == 2, \"!valid\");\n        require(pairToken.balanceOf(address(this)) > minPairAmount, \"!minLiq\");\n\n        for (uint256 i = 0; i < 2; i++) {\n            address asset = address(_request.assets[i]);\n            require(asset == address(startToken) || asset == address(pairToken), \"!asset\");\n\n            IERC20 tkn = IERC20(asset);\n            uint256 bal = tkn.balanceOf(address(this));\n            require(bal > 0 && bal == _request.maxAmountsIn[i], \"!bal\");\n\n            tkn.safeApprove(address(bVault), 0);\n            tkn.safeApprove(address(bVault), bal);\n        }\n\n        (address pool, ) = bVault.getPool(_poolId);\n        uint256 supplyBefore = IERC20(pool).totalSupply();\n        require(supplyBefore == 0, \"!init\");\n\n        bVault.joinPool(_poolId, address(this), dao, _request);\n\n        uint256 balAfter = IERC20(pool).balanceOf(dao);\n        require(balAfter > 0, \"!mint\");\n\n        emit LiquidityProvided(_request.maxAmountsIn, balAfter);\n    }"
}