59 lines
2.3 KiB
Solidity
59 lines
2.3 KiB
Solidity
pragma solidity 0.5.15;
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import "./interfaces/IUniswapV2Factory.sol";
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import "./interfaces/IUniswapV2.sol";
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import "./UniswapV2.sol";
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contract UniswapV2Factory is IUniswapV2Factory {
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address public feeToSetter;
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address public feeTo;
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mapping (address => mapping(address => address)) private getExchange_;
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address[] public exchanges;
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event ExchangeCreated(address indexed token0, address indexed token1, address exchange, uint);
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constructor(address _feeToSetter) public {
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feeToSetter = _feeToSetter;
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}
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function sortTokens(address tokenA, address tokenB) public pure returns (address token0, address token1) {
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return tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
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}
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function getExchange(address tokenA, address tokenB) external view returns (address exchange) {
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(address token0, address token1) = sortTokens(tokenA, tokenB);
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return getExchange_[token0][token1];
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}
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function exchangesCount() external view returns (uint) {
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return exchanges.length;
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}
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function createExchange(address tokenA, address tokenB) external returns (address exchange) {
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require(tokenA != tokenB, "UniswapV2Factory: SAME_ADDRESS");
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require(tokenA != address(0) && tokenB != address(0), "UniswapV2Factory: ZERO_ADDRESS");
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(address token0, address token1) = sortTokens(tokenA, tokenB);
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require(getExchange_[token0][token1] == address(0), "UniswapV2Factory: EXCHANGE_EXISTS");
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bytes memory exchangeBytecode = type(UniswapV2).creationCode;
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bytes32 salt = keccak256(abi.encodePacked(token0, token1));
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assembly { // solium-disable-line security/no-inline-assembly
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exchange := create2(0, add(exchangeBytecode, 32), mload(exchangeBytecode), salt)
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}
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IUniswapV2(exchange).initialize(token0, token1);
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getExchange_[token0][token1] = exchange;
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exchanges.push(exchange);
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emit ExchangeCreated(token0, token1, exchange, exchanges.length);
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}
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function setFeeToSetter(address _feeToSetter) external {
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require(msg.sender == feeToSetter, "UniswapV2Factory: FORBIDDEN");
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feeToSetter = _feeToSetter;
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}
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function setFeeTo(address _feeTo) external {
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require(msg.sender == feeToSetter, "UniswapV2Factory: FORBIDDEN");
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feeTo = _feeTo;
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}
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}
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