Zap Curve token to Principal token (#230)

.github/workflows/cov.yaml

@@ -17,7 +17,7 @@ jobs:
         - name: Coverage
           run: npm run build && npm run coverage
         - name: Edit lcov.info
-          run: cat coverage/lcov.info | sed '/.*\/balancer-core-v2\/.*/,/TN:/d' | sed '/.*\/test\/.*/,/TN:/d' > coverage/tmp.info && mv coverage/tmp.info coverage/lcov.info
+          run: cat coverage/lcov.info | sed '/.*\/balancer-core-v2\/.*/,/TN:/d' | sed '/.*\/test\/.*/,/TN:/d' | sed '/.*\/zaps\/.*/,/TN:/d' > coverage/tmp.info && mv coverage/tmp.info coverage/lcov.info
         - name: Coveralls
           uses: coverallsapp/[email protected]
           with:

cSpell.json

@@ -22,6 +22,9 @@
         "destinatary",
         "ecsign",
         "EIP",
+        "ePyvCurveLUSD",
+        "ePyvcrv3crypto",
+        "ePyvcrvSTETH",
         "ERC",
         "ethersproject",
         "exitswap",
@@ -37,6 +40,7 @@
         "IWETH",
         "joinswap",
         "keccak",
+        "LUSD",
         "mixedcase",
         "mkdirp",
         "mload",
@@ -55,6 +59,7 @@
         "returndatasize",
         "secp",
         "selfdestruct",
+        "Sighash",
         "sload",
         "sloads",
         "solhint",
@@ -120,4 +125,4 @@
         "contracts/balancer-core-v2/**/*"
     ],
     "allowCompoundWords": false
-}
+}

contracts/interfaces/IAsset.sol

@@ -0,0 +1,7 @@
+pragma solidity ^0.8.0;
+
+// This interface is used instead of importing one from balancer contracts to
+// resolve version conflicts
+interface IAsset {
+
+}

contracts/interfaces/IVault.sol

@@ -0,0 +1,46 @@
+pragma solidity ^0.8.0;
+
+import "./IAsset.sol";
+
+// This interface is used instead of importing one from balancer contracts to
+// resolve version conflicts
+interface IVault {
+    enum SwapKind {
+        GIVEN_IN,
+        GIVEN_OUT
+    }
+
+    enum PoolSpecialization {
+        GENERAL,
+        MINIMAL_SWAP_INFO,
+        TWO_TOKEN
+    }
+
+    struct SingleSwap {
+        bytes32 poolId;
+        SwapKind kind;
+        IAsset assetIn;
+        IAsset assetOut;
+        uint256 amount;
+        bytes userData;
+    }
+
+    struct FundManagement {
+        address sender;
+        bool fromInternalBalance;
+        address payable recipient;
+        bool toInternalBalance;
+    }
+
+    function swap(
+        SingleSwap memory singleSwap,
+        FundManagement memory funds,
+        uint256 limit,
+        uint256 deadline
+    ) external payable returns (uint256);
+
+    function getPool(bytes32 poolId)
+        external
+        view
+        returns (address, PoolSpecialization);
+}