Contract Source Code (Solidity)

IDE

• Blockscan IDE

Outline

•  contract WETH *
•    - function deposit()
•    - function withdraw(uint wad)
•    - function totalSupply()
•    - function approve(address guy, uint wa ...
•    - function transfer(address dst, uint w ...
•    - function transferFrom(address src, ad ...

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

/**
 *Submitted for verification at Etherscan.io on 2023-03-14
*/

// File: contracts/mocks/WETH.sol

pragma solidity 0.7.5;

// solhint-disable
contract WETH {
    string public name     = "Wrapped Ether";
    string public symbol   = "WETH";
    uint8  public decimals = 18;

    event  Approval(address indexed src, address indexed guy, uint wad);
    event  Transfer(address indexed src, address indexed dst, uint wad);
    event  Deposit(address indexed dst, uint wad);
    event  Withdrawal(address indexed src, uint wad);

    mapping (address => uint)                       public  balanceOf;
    mapping (address => mapping (address => uint))  public  allowance;

    receive() external payable {
        deposit();
    }
    function deposit() public payable {
        balanceOf[msg.sender] += msg.value;
        emit Deposit(msg.sender, msg.value);
    }
    function withdraw(uint wad) public {
        require(balanceOf[msg.sender] >= wad);
        balanceOf[msg.sender] -= wad;
        msg.sender.transfer(wad);
        emit Withdrawal(msg.sender, wad);
    }

    function totalSupply() public view returns (uint) {
        return address(this).balance;
    }

    function approve(address guy, uint wad) public returns (bool) {
        allowance[msg.sender][guy] = wad;
        emit Approval(msg.sender, guy, wad);
        return true;
    }

    function transfer(address dst, uint wad) public returns (bool) {
        return transferFrom(msg.sender, dst, wad);
    }

    function transferFrom(address src, address dst, uint wad)
        public
        returns (bool)
    {
        require(balanceOf[src] >= wad);

        if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) {
            require(allowance[src][msg.sender] >= wad);
            allowance[src][msg.sender] -= wad;
        }

        balanceOf[src] -= wad;
        balanceOf[dst] += wad;

        emit Transfer(src, dst, wad);

        return true;
    }
}
// solhint-enable

[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"src","type":"address"},{"indexed":true,"internalType":"address","name":"guy","type":"address"},{"indexed":false,"internalType":"uint256","name":"wad","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"dst","type":"address"},{"indexed":false,"internalType":"uint256","name":"wad","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"src","type":"address"},{"indexed":true,"internalType":"address","name":"dst","type":"address"},{"indexed":false,"internalType":"uint256","name":"wad","type":"uint256"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"src","type":"address"},{"indexed":false,"internalType":"uint256","name":"wad","type":"uint256"}],"name":"Withdrawal","type":"event"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"guy","type":"address"},{"internalType":"uint256","name":"wad","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"deposit","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"dst","type":"address"},{"internalType":"uint256","name":"wad","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"src","type":"address"},{"internalType":"address","name":"dst","type":"address"},{"internalType":"uint256","name":"wad","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"wad","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]

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