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pendle-finance · Jun 28, 2022 · cbf80c3 · cbf80c3
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commit cbf80c3
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Showing 9 changed files with 479 additions and 432 deletions.
diff --git a/contracts/ERC20.sol b/contracts/ERC20.sol
@@ -3,24 +3,23 @@ pragma solidity ^0.8.0;
 
 import "./IERC20Metadata.sol";
 
-contract ERC20 is IERC20Metadata{
-
+contract ERC20 is IERC20Metadata {
   string public name;
   string public symbol;
   uint8 public decimals;
   uint256 public totalSupply;
-  mapping(address=>uint) private ownership;
-  mapping(address => mapping(address=>uint256)) private allowances;
+  mapping(address => uint256) private ownership;
+  mapping(address => mapping(address => uint256)) private allowances;
 
   event Mint(address to, uint256 amount);
   event Burn(address from, uint256 amount);
 
-  modifier validAddress (address myAddress) {
+  modifier validAddress(address myAddress) {
     require(myAddress != address(0), "Invalid address");
     _;
   }
 
-  constructor (string memory _name, string memory _symbol) {
+  constructor(string memory _name, string memory _symbol) {
     decimals = 18;
     name = _name;
     symbol = _symbol;

diff --git a/contracts/Factory.sol b/contracts/Factory.sol
@@ -6,30 +6,27 @@ import "./Pair.sol";
 import "./IERC20.sol";
 
 contract Factory is IFactory {
+  mapping(address => mapping(address => address)) private pairMapping;
+  address[] public allPairs;
 
-    mapping(address => mapping(address => address)) private pairMapping;
-    address[] public allPairs;
+  function allPairsLength() external view returns (uint256) {
+    return allPairs.length;
+  }
 
-    function allPairsLength() external view returns (uint) {
-        return allPairs.length;
-    }
+  function getPair(address tokenA, address tokenB) external view returns (address) {
+    return pairMapping[tokenA][tokenB];
+  }
 
-    function getPair(address tokenA, address tokenB) external view returns (address){
-        return pairMapping[tokenA][tokenB];
-    }
-
-    function createPair(address tokenA, address tokenB) external returns (address newPair){
-
-        require(tokenA != tokenB, "Same token");
-        (address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
-        require(token0 != address(0), "Invalid token address");
-        require(pairMapping[token0][token1] == address(0), "Pair exists");
-
-        newPair = address(new Pair(token0, token1, "LP TOKEN", "LPT"));
-        allPairs.push(newPair);
-        pairMapping[token0][token1] = newPair;
-        pairMapping[token1][token0] = newPair;
-        emit PairCreated(token0, token1, newPair);
-    }
+  function createPair(address tokenA, address tokenB) external returns (address newPair) {
+    require(tokenA != tokenB, "Same token");
+    (address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
+    require(token0 != address(0), "Invalid token address");
+    require(pairMapping[token0][token1] == address(0), "Pair exists");
 
+    newPair = address(new Pair(token0, token1, "LP TOKEN", "LPT"));
+    allPairs.push(newPair);
+    pairMapping[token0][token1] = newPair;
+    pairMapping[token1][token0] = newPair;
+    emit PairCreated(token0, token1, newPair);
+  }
 }
diff --git a/contracts/IERC20Metadata.sol b/contracts/IERC20Metadata.sol
@@ -11,18 +11,18 @@ import "./IERC20.sol";
  * _Available since v4.1._
  */
 interface IERC20Metadata is IERC20 {
-    /**
-     * @dev Returns the name of the token.
-     */
-    function name() external view returns (string memory);
+  /**
+   * @dev Returns the name of the token.
+   */
+  function name() external view returns (string memory);
 
-    /**
-     * @dev Returns the symbol of the token.
-     */
-    function symbol() external view returns (string memory);
+  /**
+   * @dev Returns the symbol of the token.
+   */
+  function symbol() external view returns (string memory);
 
-    /**
-     * @dev Returns the decimals places of the token.
-     */
-    function decimals() external view returns (uint8);
-}
+  /**
+   * @dev Returns the decimals places of the token.
+   */
+  function decimals() external view returns (uint8);
+}
diff --git a/contracts/IFactory.sol b/contracts/IFactory.sol
@@ -2,10 +2,13 @@
 pragma solidity ^0.8.0;
 
 interface IFactory {
-    event PairCreated(address indexed token0, address indexed token1, address pair);
+  event PairCreated(address indexed token0, address indexed token1, address pair);
 
-    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 createPair(address tokenA, address tokenB) external returns (address pair);
-}
+  function getPair(address tokenA, address tokenB) external view returns (address pair);
+
+  function allPairs(uint256) external view returns (address pair);
+
+  function allPairsLength() external view returns (uint256);
+
+  function createPair(address tokenA, address tokenB) external returns (address pair);
+}
diff --git a/contracts/IPair.sol b/contracts/IPair.sol
@@ -4,27 +4,47 @@ pragma solidity ^0.8.0;
 import "./IERC20Metadata.sol";
 
 interface IPair is IERC20Metadata {
-    event ProvideLiquidity(address indexed sender, uint amount0, uint amount1);
-    event RemoveLiquidity(address indexed sender, uint amount0, uint amount1);
-    event Swap(
-        address indexed sender,
-        uint amount0In,
-        uint amount1In,
-        uint amount0Out,
-        uint amount1Out
+  event ProvideLiquidity(address indexed sender, uint256 amount0, uint256 amount1);
+  event RemoveLiquidity(address indexed sender, uint256 amount0, uint256 amount1);
+  event Swap(
+    address indexed sender,
+    uint256 amount0In,
+    uint256 amount1In,
+    uint256 amount0Out,
+    uint256 amount1Out
+  );
+
+  event Sync(uint112 reserve0, uint112 reserve1);
+
+  function MINIMUM_LIQUIDITY() external pure returns (uint256);
+
+  function factory() external view returns (address);
+
+  function token0() external view returns (address);
+
+  function token1() external view returns (address);
+
+  function getReserves()
+    external
+    view
+    returns (
+      uint112 reserve0,
+      uint112 reserve1,
+      uint32 blockTimestampLast
     );
 
-    event Sync(uint112 reserve0, uint112 reserve1);
+  function kLast() external view returns (uint256);
+
+  function provideLiquidity(uint256 amount0In, uint256 amount1In) external;
+
+  function removeLiquidity(uint256 amount0Out, uint256 amount1Out) external;
 
-    function MINIMUM_LIQUIDITY() external pure returns (uint);
-    function factory() external view returns (address);
-    function token0() external view returns (address);
-    function token1() external view returns (address);
-    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
-    function kLast() external view returns (uint);
+  function swap(
+    uint256 amount0In,
+    uint256 amount1In,
+    uint256 amount0Out,
+    uint256 amount1Out
+  ) external;
 
-    function provideLiquidity(uint amount0In, uint amount1In) external;
-    function removeLiquidity(uint amount0Out, uint amount1Out) external;
-    function swap(uint amount0In, uint amount1In, uint amount0Out, uint amount1Out) external;
-    function sync() external;
-}
+  function sync() external;
+}