Contract

0x088d351E4Ebe045c08bCdFB60234aAe524776536

Source Code

API

Overview

ETH Balance

0 ETH

Eth Value

$0.00

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ContractCreator

0xcfaD496f...d1dc3a781 | 41 days ago

Multichain Info

$0 (Multichain Portfolio)

	Transaction Hash	Method Search by Function Name / Method ID	Block	Set Duration Last 1H Last 24H Last 7D Last 30D Last 90D Last 180D Custom Duration From To	From	ANY IN OUT	To	Set Amounts > 0.00001 0-1 1-10 1-100 1-1k 1-10k 1-100k 1-1m Custom Amounts Amount must be 0 or greater than or equals 0.00001
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Contract Source Code Verified (Exact Match)

Contract Name:

Helper

Compiler Version

v0.8.29+commit.ab55807c

Optimization Enabled:

No with 200 runs

Other Settings:

cancun EvmVersion

Contract Source Code (Solidity Standard Json-Input format)

IDE

File 1 of 1 : Helper.sol

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.24;

interface IAuction {
    function getReserves() external view returns (uint dolaReserve, uint dbrReserve);
    function buyDbr(uint exactDolaIn, uint exactDbrOut, address to) external;
}

interface IERC20 {
    function approve(address,uint) external returns (bool);
    function transferFrom(address,address,uint) external returns (bool);
}

contract Helper {

    IAuction public immutable auction;
    IERC20 public immutable dola;

    constructor(
        address _auction,
        address _dola
    ) {
        auction = IAuction(_auction);
        dola = IERC20(_dola);
        dola.approve(_auction, type(uint).max);
    }
    
    function getDbrOut(uint dolaIn) public view returns (uint dbrOut) {
        require(dolaIn > 0, "dolaIn must be positive");
        (uint dolaReserve, uint dbrReserve) = auction.getReserves();
        uint numerator = dolaIn * dbrReserve;
        uint denominator = dolaReserve + dolaIn;
        dbrOut = numerator / denominator;
    }

    function getDolaIn(uint dbrOut) public view returns (uint dolaIn) {
        require(dbrOut > 0, "dbrOut must be positive");
        (uint dolaReserve, uint dbrReserve) = auction.getReserves();
        uint numerator = dbrOut * dolaReserve;
        uint denominator = dbrReserve - dbrOut;
        dolaIn = (numerator / denominator) + 1;
    }

    function swapExactDolaForDbr(uint dolaIn, uint dbrOutMin) external returns (uint dbrOut) {
        dbrOut = getDbrOut(dolaIn);
        require(dbrOut >= dbrOutMin, "dbrOut must be greater than dbrOutMin");
        dola.transferFrom(msg.sender, address(this), dolaIn);
        auction.buyDbr(dolaIn, dbrOut, msg.sender);
    }

    function swapDolaForExactDbr(uint dbrOut, uint dolaInMax) external returns (uint dolaIn) {
        dolaIn = getDolaIn(dbrOut);
        require(dolaIn <= dolaInMax, "dolaIn must be less than dolaInMax");
        dola.transferFrom(msg.sender, address(this), dolaIn);
        auction.buyDbr(dolaIn, dbrOut, msg.sender);
    }

}

Settings

{
  "remappings": [
    "ds-test/=lib/solmate/lib/ds-test/src/",
    "forge-std/=lib/forge-std/src/",
    "solmate/=lib/solmate/src/"
  ],
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "cancun",
  "viaIR": false
}

Contract Security Audit

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Contract ABI

API

[{"inputs":[{"internalType":"address","name":"_auction","type":"address"},{"internalType":"address","name":"_dola","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"auction","outputs":[{"internalType":"contract IAuction","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"dola","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"dolaIn","type":"uint256"}],"name":"getDbrOut","outputs":[{"internalType":"uint256","name":"dbrOut","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"dbrOut","type":"uint256"}],"name":"getDolaIn","outputs":[{"internalType":"uint256","name":"dolaIn","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"dbrOut","type":"uint256"},{"internalType":"uint256","name":"dolaInMax","type":"uint256"}],"name":"swapDolaForExactDbr","outputs":[{"internalType":"uint256","name":"dolaIn","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"dolaIn","type":"uint256"},{"internalType":"uint256","name":"dbrOutMin","type":"uint256"}],"name":"swapExactDolaForDbr","outputs":[{"internalType":"uint256","name":"dbrOut","type":"uint256"}],"stateMutability":"nonpayable","type":"function"}]

Contract Creation Code

Decompile Bytecode Switch to Opcodes View

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Deployed Bytecode

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000005bacafbe2788b0ec837eb95f05938daf49224f54000000000000000000000000b45ad160634c528cc3d2926d9807104fa3157305

-----Decoded View---------------
Arg [0] : _auction (address): 0x5BaCAfBe2788b0EC837eB95f05938DAf49224f54
Arg [1] : _dola (address): 0xb45ad160634c528Cc3D2926d9807104FA3157305

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000005bacafbe2788b0ec837eb95f05938daf49224f54
Arg [1] : 000000000000000000000000b45ad160634c528cc3d2926d9807104fa3157305

Block		Uncle Number	Difficulty	Gas Used	Reward

View All Uncles

0x088d351E4Ebe045c08bCdFB60234aAe524776536

Net Worth in USD

$0.00

Net Worth in ETH

Multichain Portfolio | 33 Chains

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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.

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