Adding sUSD => synths functionality

commitlint.config.js

@@ -0,0 +1 @@
+module.exports = {extends: ["@commitlint/config-conventional"]};

contracts/Interfaces/UniswapInterfaces/IUniSimple.sol

@@ -1,5 +1,9 @@
+// SPDX-License-Identifier: UNLICENSED
 pragma solidity >=0.6.2;
 
 interface IUniSimple {
-    function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts);
-}
+    function getAmountsOut(uint256 amountIn, address[] calldata path)
+        external
+        view
+        returns (uint256[] memory amounts);
+}

contracts/Interfaces/UniswapInterfaces/IUniswapV2Migrator.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: UNLICENSED
 pragma solidity >=0.5.0;
 
 interface IUniswapV2Migrator {

contracts/Interfaces/UniswapInterfaces/IUniswapV2Router01.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: UNLICENSED
 pragma solidity >=0.6.2;
 
 interface IUniswapV2Router01 {
@@ -148,7 +149,13 @@ interface IUniswapV2Router01 {
         uint256 reserveOut
     ) external pure returns (uint256 amountIn);
 
-    function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts);
+    function getAmountsOut(uint256 amountIn, address[] calldata path)
+        external
+        view
+        returns (uint256[] memory amounts);
 
-    function getAmountsIn(uint256 amountOut, address[] calldata path) external view returns (uint256[] memory amounts);
+    function getAmountsIn(uint256 amountOut, address[] calldata path)
+        external
+        view
+        returns (uint256[] memory amounts);
 }

contracts/Interfaces/UniswapInterfaces/IUniswapV2Router02.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: UNLICENSED
 pragma solidity >=0.6.2;
 
 import "./IUniswapV2Router01.sol";

contracts/Interfaces/UniswapInterfaces/IWETH.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: UNLICENSED
 pragma solidity >=0.5.0;
 import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 

contracts/Interfaces/UniswapInterfaces/V1/IUniswapV1Exchange.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: UNLICENSED
 pragma solidity >=0.5.0;
 
 interface IUniswapV1Exchange {
@@ -22,5 +23,8 @@ interface IUniswapV1Exchange {
         uint256
     ) external returns (uint256);
 
-    function ethToTokenSwapInput(uint256, uint256) external payable returns (uint256);
+    function ethToTokenSwapInput(uint256, uint256)
+        external
+        payable
+        returns (uint256);
 }

contracts/Interfaces/UniswapInterfaces/V1/IUniswapV1Factory.sol

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: UNLICENSED
 pragma solidity >=0.5.0;
 
 interface IUniswapV1Factory {

contracts/Interfaces/Yearn/IVaultV2.sol

@@ -6,9 +6,24 @@ pragma experimental ABIEncoderV2;
 import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 
 interface IVaultV2 is IERC20 {
-
-    function addStrategy(address, uint256, uint256, uint256) external;
-
+    struct StrategyParams {
+        uint256 performanceFee;
+        uint256 activation;
+        uint256 debtRatio;
+        uint256 minDebtPerHarvest;
+        uint256 maxDebtPerHarvest;
+        uint256 lastReport;
+        uint256 totalDebt;
+        uint256 totalGain;
+        uint256 totalLoss;
+    }
+
+    function addStrategy(
+        address,
+        uint256,
+        uint256,
+        uint256
+    ) external;
 
     function name() external view returns (string calldata);
 
@@ -31,16 +46,29 @@ interface IVaultV2 is IERC20 {
 
     function deposit(uint256 amount) external returns (uint256);
 
-    function deposit(uint256 amount, address recipient) external returns (uint256);
+    function deposit(uint256 amount, address recipient)
+        external
+        returns (uint256);
 
     // NOTE: Vyper produces multiple signatures for a given function with "default" args
     function withdraw() external returns (uint256);
 
     function withdraw(uint256 maxShares) external returns (uint256);
+
+    function withdraw(
+        uint256 maxShares,
+        address receiver,
+        uint256 maxloss
+    ) external returns (uint256);
+
     function setManagementFee(uint256) external;
+
     function updateStrategyDebtRatio(address, uint256) external;
 
-    function withdraw(uint256 maxShares, address recipient) external returns (uint256);
+    function withdraw(uint256 maxShares, address recipient)
+        external
+        returns (uint256);
+
     function withdrawalQueue(uint256) external view returns (address);
 
     function token() external view returns (address);
@@ -52,7 +80,11 @@ interface IVaultV2 is IERC20 {
     function depositLimit() external view returns (uint256);
 
     function maxAvailableShares() external view returns (uint256);
-    function strategies(address _strategy) external view returns (StrategyParams memory);
+
+    function strategies(address _strategy)
+        external
+        view
+        returns (StrategyParams memory);
 
     /**
      * View how much the Vault would increase this Strategy's borrow limit,
@@ -119,17 +151,6 @@ interface IVaultV2 is IERC20 {
      * is subject to guardian defined by the Vault.
      */
     function guardian() external view returns (address);
+
     function setDepositLimit(uint256) external;
 }
-
-struct StrategyParams {
-    uint256 performanceFee;
-    uint256 activation;
-    uint256 debtRatio;
-    uint256 minDebtPerHarvest;
-    uint256 maxDebtPerHarvest;
-    uint256 lastReport;
-    uint256 totalDebt;
-    uint256 totalGain;
-    uint256 totalLoss;
-}

contracts/Interfaces/curve/Curve.sol

@@ -44,16 +44,28 @@ interface ICurveFi {
         bool use_underlying
     ) external payable;
 
-    function coins(uint256) external returns (address);
-    function underlying_coins(uint256) external returns (address);
+    function coins(int128) external returns (address);
 
-    function remove_liquidity_imbalance(uint256[2] calldata amounts, uint256 max_burn_amount) external;
+    function underlying_coins(int128) external returns (address);
 
-    function remove_liquidity(uint256 _amount, uint256[2] calldata amounts) external;
+    function remove_liquidity_imbalance(
+        uint256[2] calldata amounts,
+        uint256 max_burn_amount
+    ) external;
 
-    function calc_withdraw_one_coin(uint256 _amount, int128 i) external view returns (uint256);
+    function remove_liquidity(uint256 _amount, uint256[2] calldata amounts)
+        external;
 
-    function calc_withdraw_one_coin(uint256 _amount, int128 i, bool use_underlying) external view returns (uint256);
+    function calc_withdraw_one_coin(uint256 _amount, int128 i)
+        external
+        view
+        returns (uint256);
+
+    function calc_withdraw_one_coin(
+        uint256 _amount,
+        int128 i,
+        bool use_underlying
+    ) external view returns (uint256);
 
     function remove_liquidity_one_coin(
         uint256 _token_amount,
@@ -83,9 +95,20 @@ interface ICurveFi {
         uint256 _from_amount
     ) external view returns (uint256);
 
-    function calc_token_amount( uint256[2] calldata amounts, bool is_deposit) external view returns (uint256);
-    function calc_token_amount( uint256[3] calldata amounts, bool is_deposit) external view returns (uint256);
-    function calc_token_amount( uint256[4] calldata amounts, bool is_deposit) external view returns (uint256);
+    function calc_token_amount(uint256[2] calldata amounts, bool is_deposit)
+        external
+        view
+        returns (uint256);
+
+    function calc_token_amount(uint256[3] calldata amounts, bool is_deposit)
+        external
+        view
+        returns (uint256);
+
+    function calc_token_amount(uint256[4] calldata amounts, bool is_deposit)
+        external
+        view
+        returns (uint256);
 }
 
 interface Zap {
@@ -94,4 +117,4 @@ interface Zap {
         int128,
         uint256
     ) external;
-}
+}

contracts/Interfaces/erc20/IERC20Extended.sol

@@ -1,7 +1,10 @@
+// SPDX-License-Identifier: MIT
 pragma solidity 0.6.12;
 
-interface IERC20Extended{
+interface IERC20Extended {
     function decimals() external view returns (uint8);
+
     function name() external view returns (string memory);
+
     function symbol() external view returns (string memory);
-}
+}

contracts/Interfaces/synthetix/IAddressResolver.sol

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: AGPL-3.0
+pragma solidity >=0.4.24;
+
+// https://docs.synthetix.io/contracts/source/interfaces/iaddressresolver
+interface IAddressResolver {
+    function getAddress(bytes32 name) external view returns (address);
+
+    function getSynth(bytes32 key) external view returns (address);
+
+    function requireAndGetAddress(bytes32 name, string calldata reason)
+        external
+        view
+        returns (address);
+}