NoBey/uniswap-v2
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exchange -> pair

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This commit is contained in:
Noah Zinsmeister
2020-03-17 18:05:28 -04:00
parent 170a739f08
commit 1136544ac8
13 changed files with 22637 additions and 22650 deletions
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31
contracts/UniswapV2Factory.sol
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@ -1,41 +1,40 @@
pragma solidity =0.5.16;
import './interfaces/IUniswapV2Factory.sol';
import './UniswapV2Exchange.sol';
import './interfaces/IUniswapV2Exchange.sol';
import './UniswapV2Pair.sol';
contract UniswapV2Factory is IUniswapV2Factory {
address public feeTo;
address public feeToSetter;
mapping(address => mapping(address => address)) public getExchange;
address[] public allExchanges;
mapping(address => mapping(address => address)) public getPair;
address[] public allPairs;
event ExchangeCreated(address indexed token0, address indexed token1, address exchange, uint);
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
constructor(address _feeToSetter) public {
feeToSetter = _feeToSetter;
}
function allExchangesLength() external view returns (uint) {
return allExchanges.length;
function allPairsLength() external view returns (uint) {
return allPairs.length;
}
function createExchange(address tokenA, address tokenB) external returns (address exchange) {
function createPair(address tokenA, address tokenB) external returns (address pair) {
require(tokenA != tokenB, 'UniswapV2: IDENTICAL_ADDRESSES');
(address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
require(token0 != address(0), 'UniswapV2: ZERO_ADDRESS');
require(getExchange[token0][token1] == address(0), 'UniswapV2: EXCHANGE_EXISTS'); // single check is sufficient
bytes memory exchangeBytecode = type(UniswapV2Exchange).creationCode;
require(getPair[token0][token1] == address(0), 'UniswapV2: PAIR_EXISTS'); // single check is sufficient
bytes memory bytecode = type(UniswapV2Pair).creationCode;
bytes32 salt = keccak256(abi.encodePacked(token0, token1));
assembly {
exchange := create2(0, add(exchangeBytecode, 32), mload(exchangeBytecode), salt)
pair := create2(0, add(bytecode, 32), mload(bytecode), salt)
}
IUniswapV2Exchange(exchange).initialize(token0, token1);
getExchange[token0][token1] = exchange;
getExchange[token1][token0] = exchange; // populate mapping in the reverse direction
allExchanges.push(exchange);
emit ExchangeCreated(token0, token1, exchange, allExchanges.length);
IUniswapV2Pair(pair).initialize(token0, token1);
getPair[token0][token1] = pair;
getPair[token1][token0] = pair; // populate mapping in the reverse direction
allPairs.push(pair);
emit PairCreated(token0, token1, pair, allPairs.length);
}
function setFeeTo(address _feeTo) external {

4
contracts/UniswapV2Exchange.sol → contracts/UniswapV2Pair.sol
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@ -1,6 +1,6 @@
pragma solidity =0.5.16;
import './interfaces/IUniswapV2Exchange.sol';
import './interfaces/IUniswapV2Pair.sol';
import './UniswapV2ERC20.sol';
import './libraries/Math.sol';
import './libraries/UQ112x112.sol';
@ -8,7 +8,7 @@ import './interfaces/IERC20.sol';
import './interfaces/IUniswapV2Factory.sol';
import './interfaces/IUniswapV2Callee.sol';
contract UniswapV2Exchange is IUniswapV2Exchange, UniswapV2ERC20 {
contract UniswapV2Pair is IUniswapV2Pair, UniswapV2ERC20 {
using SafeMath for uint;
using UQ112x112 for uint224;

10
contracts/interfaces/IUniswapV2Factory.sol
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@ -1,16 +1,16 @@
pragma solidity =0.5.16;
interface IUniswapV2Factory {
event ExchangeCreated(address indexed token0, address indexed token1, address exchange, uint);
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getExchange(address tokenA, address tokenB) external view returns (address exchange);
function allExchanges(uint) external view returns (address exchange);
function allExchangesLength() external view returns (uint);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createExchange(address tokenA, address tokenB) external returns (address exchange);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;

2
contracts/interfaces/IUniswapV2Exchange.sol → contracts/interfaces/IUniswapV2Pair.sol
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@ -1,6 +1,6 @@
pragma solidity =0.5.16;
interface IUniswapV2Exchange {
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);