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EtherDelta

It use contract to realize traditional centralized exchange and order book model exchange

Due to the older solidity 0.4.9 version of the original code, Hardhat did not support it, so updated the contract and test files to solidity 0.8.0. (The old version has too many bugs...)。

The original code is in ./backup

Code usage

Install

yarn install

Compile Contract

yarn build

或

npx hardhat compile

Test Contract

yarn test

或

npx hardhat test

Brief Description of Contract Functions

ReserveToken

EtherDelta implements a simple token contract, similar to the ERC20 standard contract, for intra-exchange token trading (not ETH)

AccountLevelsTest

An internal VIP level list is maintained. The administrator can set the VIP level of a user.

EtherDelta

Exchange core contract

Users must first deposit their assets in the (deposit()) exchange contract, and can withdraw( withdraw() in their wallet after the transaction, which is basically the same as the process of a centralized exchange.

Transaction process

  1. The seller invokes order() with the invoicing information converted to a hash as a key into the' Orders' contract variable
  2. The buyer eats the order trade(), passing in the specified order hash

constructor

constructor(
    address admin_,     //  Creator
    address feeAccount_,  // Commission beneficiary
    address accountLevelsAddr_, // AccountLevelsTest Contract Address
    uint256 feeMake_,   //  Purchase rate
    uint256 feeTake_,   //  Selling rate
    uint256 feeRebate_  //  VIP commission rebate rate
)

Contract public variable

...
mapping(address => mapping(address => uint256)) public tokens; // Token List of the number of each token held by the user (address 0 represents Ether)
mapping(address => mapping(bytes32 => bool)) public orders; // List of invoices (true = invoices submitted by the user, requiring verification of offline signature)
mapping(address => mapping(bytes32 => uint256)) public orderFills; // amount of order that has been filled

todo list

Test Process Description

At present, only the core functions have been tested, and part of the test process has not been upgraded. See ../backup/etherdelta/test.old.js for the old test file Some tests in the original test file are incorrect. You are advised to use the current test file

Refer to the link

EtherDelta github 仓库: https://github.com/etherdelta/smart_contract