feat: Add Barter support to EthereumBridgeAdapter [LIT-981] (#703)

contracts/zero-ex/CHANGELOG.json

@@ -1,4 +1,12 @@
 [
+    {
+        "version": "0.40.0",
+        "changes": [
+            {
+                "note": "Add Barter support on Ethereum"
+            }
+        ]
+    },
     {
         "version": "0.39.2",
         "changes": [

contracts/zero-ex/contracts/src/transformers/bridges/BridgeProtocols.sol

@@ -55,4 +55,5 @@ library BridgeProtocols {
     uint128 internal constant WOOFI = 31;
     uint128 internal constant AAVEV3 = 32;
     uint128 internal constant KYBERELASTIC = 33;
+    uint128 internal constant BARTER = 34;
 }

contracts/zero-ex/contracts/src/transformers/bridges/EthereumBridgeAdapter.sol

@@ -22,6 +22,7 @@ import "./mixins/MixinBalancer.sol";
 import "./mixins/MixinBalancerV2Batch.sol";
 import "./mixins/MixinBancor.sol";
 import "./mixins/MixinBancorV3.sol";
+import "./mixins/MixinBarter.sol";
 import "./mixins/MixinCompound.sol";
 import "./mixins/MixinCurve.sol";
 import "./mixins/MixinCurveV2.sol";
@@ -48,6 +49,7 @@ contract EthereumBridgeAdapter is
     MixinBalancerV2Batch,
     MixinBancor,
     MixinBancorV3,
+    MixinBarter,
     MixinCompound,
     MixinCurve,
     MixinCurveV2,
@@ -197,6 +199,11 @@ contract EthereumBridgeAdapter is
                 return (0, true);
             }
             boughtAmount = _tradeSynthetix(sellAmount, order.bridgeData);
+        } else if (protocolId == BridgeProtocols.BARTER) {
+            if (dryRun) {
+                return (0, true);
+            }
+            boughtAmount = _tradeBarter(sellToken, sellAmount, order.bridgeData);
         } else if (protocolId == BridgeProtocols.UNKNOWN) {
             if (dryRun) {
                 return (0, true);

contracts/zero-ex/contracts/src/transformers/bridges/mixins/MixinBarter.sol

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+  Copyright 2023 ZeroEx Intl.
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+pragma solidity ^0.6.5;
+pragma experimental ABIEncoderV2;
+
+import "@0x/contracts-erc20/src/v06/LibERC20TokenV06.sol";
+import "@0x/contracts-erc20/src/IERC20Token.sol";
+import "@0x/contracts-utils/contracts/src/v06/errors/LibRichErrorsV06.sol";
+
+contract MixinBarter {
+    using LibERC20TokenV06 for IERC20Token;
+    using LibRichErrorsV06 for bytes;
+
+    function _tradeBarter(
+        IERC20Token sellToken,
+        uint256 sellAmount,
+        bytes memory bridgeData
+    ) internal returns (uint256 boughtAmount) {
+        (address barterRouter, bytes memory data) = abi.decode(bridgeData, (address, bytes));
+        sellToken.approveIfBelow(barterRouter, sellAmount);
+
+        (bool success, bytes memory resultData) = barterRouter.call(data);
+        if (!success) {
+            resultData.rrevert();
+        }
+
+        return abi.decode(resultData, (uint256));
+    }
+}