{
    "Function": "transferFrom",
    "File": "src/token/ERC20.sol",
    "Parent Contracts": [
        "src/util/Context.sol"
    ],
    "High-Level Calls": [],
    "Internal Calls": [
        "_msgSender",
        "require(bool,string)",
        "require(bool,string)",
        "_msgSender",
        "require(bool,string)",
        "_msgSender"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {\n        require(to != address(0) && to != address(this), \"ERC20/invalid-address\");\n        uint256 balance = balanceOf[from];\n        require(balance >= value, \"ERC20/insufficient-balance\");\n\n        if (from != _msgSender()) {\n            uint256 allowed = allowance[from][_msgSender()];\n            if (allowed != type(uint256).max) {\n                require(allowed >= value, \"ERC20/insufficient-allowance\");\n                unchecked {\n                    allowance[from][_msgSender()] = allowed - value;\n                }\n            }\n        }\n\n        unchecked {\n            balanceOf[from] = balance - value;\n            balanceOf[to] += value;\n        }\n\n        emit Transfer(from, to, value);\n\n        return true;\n    }"
}