added bancor mixin/sampler and started linking up with asset-swapper

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

@@ -55,4 +55,5 @@ library BridgeProtocols {
     uint128 internal constant BALANCERV2BATCH = 25;
     uint128 internal constant GMX             = 26;
     uint128 internal constant PLATYPUS        = 27;
+    uint128 internal constant BANCORV3        = 28;
 }

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

@@ -27,6 +27,7 @@ import "./mixins/MixinBalancer.sol";
 import "./mixins/MixinBalancerV2.sol";
 import "./mixins/MixinBalancerV2Batch.sol";
 import "./mixins/MixinBancor.sol";
+import "./mixins/MixinBancorV3.sol";
 import "./mixins/MixinCompound.sol";
 import "./mixins/MixinCurve.sol";
 import "./mixins/MixinCurveV2.sol";
@@ -52,6 +53,7 @@ contract EthereumBridgeAdapter is
     MixinBalancerV2,
     MixinBalancerV2Batch,
     MixinBancor,
+    MixinBancorV3,
     MixinCompound,
     MixinCurve,
     MixinCurveV2,
@@ -250,8 +252,15 @@ contract EthereumBridgeAdapter is
                 sellAmount,
                 order.bridgeData
             );
+        } else if (protocolId == BridgeProtocols.BANCORV3) {
+            if (dryRun) { return (0, true); }
+            boughtAmount = _tradeBancorV3(
+                buyToken,
+                sellAmount,
+                order.bridgeData
+            );
         } else if (protocolId == BridgeProtocols.UNKNOWN) {
-            if (dryRun) { return (0, true); }            
+            if (dryRun) { return (0, true); }
             boughtAmount = _tradeZeroExBridge(
                 sellToken,
                 buyToken,

contracts/zero-ex/contracts/src/transformers/bridges/mixins/MixinBancorV3.sol

@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: Apache-2.0
+
+/*
+
+  Copyright 2020 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/contracts/src/v06/LibERC20TokenV06.sol";
+import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
+
+/*
+    BancorV3
+*/
+interface IBancorV3 {
+    /**
+     * @dev performs a trade by providing the source amount and returns the target amount and the associated fee
+     *
+     * requirements:
+     *
+     * - the caller must be the network contract
+     */
+    function tradeBySourceAmount(
+        address sourceToken,
+        address targetToken,
+        uint256 sourceAmount,
+        uint256 minReturnAmount,
+        uint256 deadline,
+        address beneficiary
+    ) external returns (uint256 amount);
+}
+
+contract MixinBancorV3 {
+
+    using LibERC20TokenV06 for IERC20TokenV06;
+
+    function _tradeBancorV3(
+        IERC20TokenV06 buyToken,
+        uint256 sellAmount,
+        bytes memory bridgeData
+    )
+        public
+        returns (uint256 amountOut)
+
+    {
+        IBancorV3 router;
+        IERC20TokenV06[] memory path;
+        address[] memory _path;
+        {
+            (router, _path) = abi.decode(bridgeData, (IBancorV3, address[]));
+            // To get around `abi.decode()` not supporting interface array types.
+            assembly { path := _path }
+        }
+
+        require(path.length >= 2, "MixinBancorV3/PATH_LENGTH_MUST_BE_AT_LEAST_TWO");
+        require(
+            path[path.length - 1] == buyToken,
+            "MixinBancorV3/LAST_ELEMENT_OF_PATH_MUST_MATCH_OUTPUT_TOKEN"
+        );
+        // Grant the BancorV3 router an allowance to sell the first token.
+        path[0].approveIfBelow(address(router), sellAmount);
+
+
+        uint256 amountOut = router.tradeBySourceAmount(
+            _path[0],
+            _path[1],
+             // Sell all tokens we hold.
+            sellAmount,
+             // Minimum buy amount.
+            1,
+            //deadline
+            block.timestamp + 1,
+            // address of the mixin
+            address(this)
+        );
+
+        return amountOut;
+    }
+}

contracts/zero-ex/package.json

@@ -43,7 +43,7 @@
     "config": {
         "publicInterfaceContracts": "IZeroEx,ZeroEx,FullMigration,InitialMigration,IFlashWallet,IERC20Transformer,IOwnableFeature,ISimpleFunctionRegistryFeature,ITransformERC20Feature,FillQuoteTransformer,PayTakerTransformer,PositiveSlippageFeeTransformer,WethTransformer,OwnableFeature,SimpleFunctionRegistryFeature,TransformERC20Feature,AffiliateFeeTransformer,MetaTransactionsFeature,LogMetadataTransformer,LiquidityProviderFeature,ILiquidityProviderFeature,NativeOrdersFeature,INativeOrdersFeature,FeeCollectorController,FeeCollector,CurveLiquidityProvider,BatchFillNativeOrdersFeature,IBatchFillNativeOrdersFeature,MultiplexFeature,IMultiplexFeature,OtcOrdersFeature,IOtcOrdersFeature,AvalancheBridgeAdapter,BSCBridgeAdapter,CeloBridgeAdapter,EthereumBridgeAdapter,FantomBridgeAdapter,OptimismBridgeAdapter,PolygonBridgeAdapter",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually.",
-        "abis": "./test/generated-artifacts/@(AbstractBridgeAdapter|AffiliateFeeTransformer|AvalancheBridgeAdapter|BSCBridgeAdapter|BatchFillNativeOrdersFeature|BootstrapFeature|BridgeProtocols|CeloBridgeAdapter|CurveLiquidityProvider|ERC1155OrdersFeature|ERC165Feature|ERC721OrdersFeature|EthereumBridgeAdapter|FantomBridgeAdapter|FeeCollector|FeeCollectorController|FillQuoteTransformer|FixinCommon|FixinEIP712|FixinERC1155Spender|FixinERC721Spender|FixinProtocolFees|FixinReentrancyGuard|FixinTokenSpender|FlashWallet|FullMigration|FundRecoveryFeature|IBatchFillNativeOrdersFeature|IBootstrapFeature|IBridgeAdapter|IERC1155OrdersFeature|IERC1155Token|IERC165Feature|IERC20Bridge|IERC20Transformer|IERC721OrdersFeature|IERC721Token|IFeature|IFeeRecipient|IFlashWallet|IFundRecoveryFeature|ILiquidityProvider|ILiquidityProviderFeature|ILiquidityProviderSandbox|IMetaTransactionsFeature|IMooniswapPool|IMultiplexFeature|INativeOrdersEvents|INativeOrdersFeature|IOtcOrdersFeature|IOwnableFeature|IPancakeSwapFeature|IPropertyValidator|ISimpleFunctionRegistryFeature|IStaking|ITakerCallback|ITestSimpleFunctionRegistryFeature|ITokenSpenderFeature|ITransformERC20Feature|IUniswapFeature|IUniswapV2Pair|IUniswapV3Feature|IUniswapV3Pool|IZeroEx|InitialMigration|LibBootstrap|LibCommonRichErrors|LibERC1155OrdersStorage|LibERC20Transformer|LibERC721OrdersStorage|LibFeeCollector|LibLiquidityProviderRichErrors|LibMetaTransactionsRichErrors|LibMetaTransactionsStorage|LibMigrate|LibNFTOrder|LibNFTOrdersRichErrors|LibNativeOrder|LibNativeOrdersRichErrors|LibNativeOrdersStorage|LibOtcOrdersStorage|LibOwnableRichErrors|LibOwnableStorage|LibProxyRichErrors|LibProxyStorage|LibReentrancyGuardStorage|LibSignature|LibSignatureRichErrors|LibSimpleFunctionRegistryRichErrors|LibSimpleFunctionRegistryStorage|LibStorage|LibTransformERC20RichErrors|LibTransformERC20Storage|LibWalletRichErrors|LiquidityProviderFeature|LiquidityProviderSandbox|LogMetadataTransformer|MetaTransactionsFeature|MixinAaveV2|MixinBalancer|MixinBalancerV2|MixinBalancerV2Batch|MixinBancor|MixinCompound|MixinCryptoCom|MixinCurve|MixinCurveV2|MixinDodo|MixinDodoV2|MixinGMX|MixinKyberDmm|MixinLido|MixinMStable|MixinMakerPSM|MixinMooniswap|MixinNerve|MixinPlatypus|MixinShell|MixinUniswap|MixinUniswapV2|MixinUniswapV3|MixinZeroExBridge|MooniswapLiquidityProvider|MultiplexFeature|MultiplexLiquidityProvider|MultiplexOtc|MultiplexRfq|MultiplexTransformERC20|MultiplexUniswapV2|MultiplexUniswapV3|NFTOrders|NativeOrdersCancellation|NativeOrdersFeature|NativeOrdersInfo|NativeOrdersProtocolFees|NativeOrdersSettlement|OptimismBridgeAdapter|OtcOrdersFeature|OwnableFeature|PancakeSwapFeature|PayTakerTransformer|PermissionlessTransformerDeployer|PolygonBridgeAdapter|PositiveSlippageFeeTransformer|SimpleFunctionRegistryFeature|TestBridge|TestCallTarget|TestCurve|TestDelegateCaller|TestFeeCollectorController|TestFeeRecipient|TestFillQuoteTransformerBridge|TestFillQuoteTransformerExchange|TestFillQuoteTransformerHost|TestFixinProtocolFees|TestFixinTokenSpender|TestFullMigration|TestInitialMigration|TestLibNativeOrder|TestLibSignature|TestLiquidityProvider|TestMetaTransactionsNativeOrdersFeature|TestMetaTransactionsTransformERC20Feature|TestMigrator|TestMintTokenERC20Transformer|TestMintableERC1155Token|TestMintableERC20Token|TestMintableERC721Token|TestMooniswap|TestNFTOrderPresigner|TestNativeOrdersFeature|TestNoEthRecipient|TestOrderSignerRegistryWithContractWallet|TestPermissionlessTransformerDeployerSuicidal|TestPermissionlessTransformerDeployerTransformer|TestPropertyValidator|TestRfqOriginRegistration|TestSimpleFunctionRegistryFeatureImpl1|TestSimpleFunctionRegistryFeatureImpl2|TestStaking|TestTokenSpenderERC20Token|TestTransformERC20|TestTransformerBase|TestTransformerDeployerTransformer|TestTransformerHost|TestUniswapV2Factory|TestUniswapV2Pool|TestUniswapV3Factory|TestUniswapV3Feature|TestUniswapV3Pool|TestWeth|TestWethTransformerHost|TestZeroExFeature|TransformERC20Feature|Transformer|TransformerDeployer|UniswapFeature|UniswapV3Feature|WethTransformer|ZeroEx|ZeroExOptimized).json"
+        "abis": "./test/generated-artifacts/@(AbstractBridgeAdapter|AffiliateFeeTransformer|AvalancheBridgeAdapter|BSCBridgeAdapter|BatchFillNativeOrdersFeature|BootstrapFeature|BridgeProtocols|CeloBridgeAdapter|CurveLiquidityProvider|ERC1155OrdersFeature|ERC165Feature|ERC721OrdersFeature|EthereumBridgeAdapter|FantomBridgeAdapter|FeeCollector|FeeCollectorController|FillQuoteTransformer|FixinCommon|FixinEIP712|FixinERC1155Spender|FixinERC721Spender|FixinProtocolFees|FixinReentrancyGuard|FixinTokenSpender|FlashWallet|FullMigration|FundRecoveryFeature|IBatchFillNativeOrdersFeature|IBootstrapFeature|IBridgeAdapter|IERC1155OrdersFeature|IERC1155Token|IERC165Feature|IERC20Bridge|IERC20Transformer|IERC721OrdersFeature|IERC721Token|IFeature|IFeeRecipient|IFlashWallet|IFundRecoveryFeature|ILiquidityProvider|ILiquidityProviderFeature|ILiquidityProviderSandbox|IMetaTransactionsFeature|IMooniswapPool|IMultiplexFeature|INativeOrdersEvents|INativeOrdersFeature|IOtcOrdersFeature|IOwnableFeature|IPancakeSwapFeature|IPropertyValidator|ISimpleFunctionRegistryFeature|IStaking|ITakerCallback|ITestSimpleFunctionRegistryFeature|ITokenSpenderFeature|ITransformERC20Feature|IUniswapFeature|IUniswapV2Pair|IUniswapV3Feature|IUniswapV3Pool|IZeroEx|InitialMigration|LibBootstrap|LibCommonRichErrors|LibERC1155OrdersStorage|LibERC20Transformer|LibERC721OrdersStorage|LibFeeCollector|LibLiquidityProviderRichErrors|LibMetaTransactionsRichErrors|LibMetaTransactionsStorage|LibMigrate|LibNFTOrder|LibNFTOrdersRichErrors|LibNativeOrder|LibNativeOrdersRichErrors|LibNativeOrdersStorage|LibOtcOrdersStorage|LibOwnableRichErrors|LibOwnableStorage|LibProxyRichErrors|LibProxyStorage|LibReentrancyGuardStorage|LibSignature|LibSignatureRichErrors|LibSimpleFunctionRegistryRichErrors|LibSimpleFunctionRegistryStorage|LibStorage|LibTransformERC20RichErrors|LibTransformERC20Storage|LibWalletRichErrors|LiquidityProviderFeature|LiquidityProviderSandbox|LogMetadataTransformer|MetaTransactionsFeature|MixinAaveV2|MixinBalancer|MixinBalancerV2|MixinBalancerV2Batch|MixinBancor|MixinBancorV3|MixinCompound|MixinCryptoCom|MixinCurve|MixinCurveV2|MixinDodo|MixinDodoV2|MixinGMX|MixinKyberDmm|MixinLido|MixinMStable|MixinMakerPSM|MixinMooniswap|MixinNerve|MixinPlatypus|MixinShell|MixinUniswap|MixinUniswapV2|MixinUniswapV3|MixinZeroExBridge|MooniswapLiquidityProvider|MultiplexFeature|MultiplexLiquidityProvider|MultiplexOtc|MultiplexRfq|MultiplexTransformERC20|MultiplexUniswapV2|MultiplexUniswapV3|NFTOrders|NativeOrdersCancellation|NativeOrdersFeature|NativeOrdersInfo|NativeOrdersProtocolFees|NativeOrdersSettlement|OptimismBridgeAdapter|OtcOrdersFeature|OwnableFeature|PancakeSwapFeature|PayTakerTransformer|PermissionlessTransformerDeployer|PolygonBridgeAdapter|PositiveSlippageFeeTransformer|SimpleFunctionRegistryFeature|TestBridge|TestCallTarget|TestCurve|TestDelegateCaller|TestFeeCollectorController|TestFeeRecipient|TestFillQuoteTransformerBridge|TestFillQuoteTransformerExchange|TestFillQuoteTransformerHost|TestFixinProtocolFees|TestFixinTokenSpender|TestFullMigration|TestInitialMigration|TestLibNativeOrder|TestLibSignature|TestLiquidityProvider|TestMetaTransactionsNativeOrdersFeature|TestMetaTransactionsTransformERC20Feature|TestMigrator|TestMintTokenERC20Transformer|TestMintableERC1155Token|TestMintableERC20Token|TestMintableERC721Token|TestMooniswap|TestNFTOrderPresigner|TestNativeOrdersFeature|TestNoEthRecipient|TestOrderSignerRegistryWithContractWallet|TestPermissionlessTransformerDeployerSuicidal|TestPermissionlessTransformerDeployerTransformer|TestPropertyValidator|TestRfqOriginRegistration|TestSimpleFunctionRegistryFeatureImpl1|TestSimpleFunctionRegistryFeatureImpl2|TestStaking|TestTokenSpenderERC20Token|TestTransformERC20|TestTransformerBase|TestTransformerDeployerTransformer|TestTransformerHost|TestUniswapV2Factory|TestUniswapV2Pool|TestUniswapV3Factory|TestUniswapV3Feature|TestUniswapV3Pool|TestWeth|TestWethTransformerHost|TestZeroExFeature|TransformERC20Feature|Transformer|TransformerDeployer|UniswapFeature|UniswapV3Feature|WethTransformer|ZeroEx|ZeroExOptimized).json"
     },
     "repository": {
         "type": "git",

contracts/zero-ex/test/artifacts.ts

@@ -108,6 +108,7 @@ import * as MixinBalancer from '../test/generated-artifacts/MixinBalancer.json';
 import * as MixinBalancerV2 from '../test/generated-artifacts/MixinBalancerV2.json';
 import * as MixinBalancerV2Batch from '../test/generated-artifacts/MixinBalancerV2Batch.json';
 import * as MixinBancor from '../test/generated-artifacts/MixinBancor.json';
+import * as MixinBancorV3 from '../test/generated-artifacts/MixinBancorV3.json';
 import * as MixinCompound from '../test/generated-artifacts/MixinCompound.json';
 import * as MixinCryptoCom from '../test/generated-artifacts/MixinCryptoCom.json';
 import * as MixinCurve from '../test/generated-artifacts/MixinCurve.json';
@@ -329,6 +330,7 @@ export const artifacts = {
     MixinBalancerV2: MixinBalancerV2 as ContractArtifact,
     MixinBalancerV2Batch: MixinBalancerV2Batch as ContractArtifact,
     MixinBancor: MixinBancor as ContractArtifact,
+    MixinBancorV3: MixinBancorV3 as ContractArtifact,
     MixinCompound: MixinCompound as ContractArtifact,
     MixinCryptoCom: MixinCryptoCom as ContractArtifact,
     MixinCurve: MixinCurve as ContractArtifact,

contracts/zero-ex/test/wrappers.ts

@@ -106,6 +106,7 @@ export * from '../test/generated-wrappers/mixin_balancer';
 export * from '../test/generated-wrappers/mixin_balancer_v2';
 export * from '../test/generated-wrappers/mixin_balancer_v2_batch';
 export * from '../test/generated-wrappers/mixin_bancor';
+export * from '../test/generated-wrappers/mixin_bancor_v3';
 export * from '../test/generated-wrappers/mixin_compound';
 export * from '../test/generated-wrappers/mixin_crypto_com';
 export * from '../test/generated-wrappers/mixin_curve';

contracts/zero-ex/tsconfig.json

@@ -145,6 +145,7 @@
         "test/generated-artifacts/MixinBalancerV2.json",
         "test/generated-artifacts/MixinBalancerV2Batch.json",
         "test/generated-artifacts/MixinBancor.json",
+        "test/generated-artifacts/MixinBancorV3.json",
         "test/generated-artifacts/MixinCompound.json",
         "test/generated-artifacts/MixinCryptoCom.json",
         "test/generated-artifacts/MixinCurve.json",

packages/asset-swapper/contracts/src/BancorV3Sampler.sol

@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+pragma experimental ABIEncoderV2;
+
+import "./interfaces/IBancorV3.sol";
+
+
+contract BancorV3Sampler
+{
+    /// @dev Gas limit for BancorV3 calls.
+    uint256 constant private BancorV3_CALL_GAS = 150e3; // 150k
+
+    /// @dev Sample sell quotes from BancorV3.
+    /// @param router Router to look up tokens and amounts
+    /// @param path Token route. Should be takerToken -> makerToken
+    /// @param takerTokenAmounts Taker token sell amount for each sample.
+    /// @return makerTokenAmounts Maker amounts bought at each taker token
+    ///         amount.
+    function sampleSellsFromBancorV3(
+        address router,
+        address[] memory path,
+        uint256[] memory takerTokenAmounts
+    )
+        public
+        view
+        returns (uint256[] memory makerTokenAmounts)
+    {
+        uint256 numSamples = takerTokenAmounts.length;
+        makerTokenAmounts = new uint256[](numSamples);
+        for (uint256 i = 0; i < numSamples; i++) {
+            try
+                IBancorV3(router).tradeOutputBySourceAmount(path[0], path[1], takerTokenAmounts[i])
+                returns (uint256 amount)
+            {
+                makerTokenAmounts[i] = amount;
+                // Break early if there are 0 amounts
+                if (makerTokenAmounts[i] == 0) {
+                    break;
+                }
+            } catch (bytes memory) {
+                // Swallow failures, leaving all results as zero.
+                break;
+            }
+        }
+    }
+
+    /// @dev Sample buy quotes from BancorV3.
+    /// @param router Router to look up tokens and amounts
+    /// @param path Token route. Should be takerToken -> makerToken.
+    /// @param makerTokenAmounts Maker token buy amount for each sample.
+    /// @return takerTokenAmounts Taker amounts sold at each maker token
+    ///         amount.
+    function sampleBuysFromBancorV3(
+        address router,
+        address[] memory path,
+        uint256[] memory makerTokenAmounts
+    )
+        public
+        view
+        returns (uint256[] memory takerTokenAmounts)
+    {
+        uint256 numSamples = makerTokenAmounts.length;
+        takerTokenAmounts = new uint256[](numSamples);
+        for (uint256 i = 0; i < numSamples; i++) {
+            try
+                IBancorV3(router).tradeInputByTargetAmount(path[0], path[1], makerTokenAmounts[i])
+                returns (uint256 amount)
+            {
+                takerTokenAmounts[i] = amount;
+                // Break early if there are 0 amounts
+                if (takerTokenAmounts[i] == 0) {
+                    break;
+                }
+            } catch (bytes memory) {
+                // Swallow failures, leaving all results as zero.
+                break;
+            }
+        }
+    }
+}

packages/asset-swapper/contracts/src/ERC20BridgeSampler.sol

@@ -24,6 +24,7 @@ import "./BalancerSampler.sol";
 import "./BalancerV2Sampler.sol";
 import "./BalancerV2BatchSampler.sol";
 import "./BancorSampler.sol";
+import "./BancorV3Sampler.sol";
 import "./CompoundSampler.sol";
 import "./CurveSampler.sol";
 import "./DODOSampler.sol";
@@ -51,6 +52,7 @@ contract ERC20BridgeSampler is
     BalancerV2Sampler,
     BalancerV2BatchSampler,
     BancorSampler,
+    BancorV3Sampler,
     CompoundSampler,
     CurveSampler,
     DODOSampler,

packages/asset-swapper/contracts/src/interfaces/IBancorV3.sol

@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+
+  Copyright 2022 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;
+pragma experimental ABIEncoderV2;
+
+interface IBancorV3 {
+
+    /**
+     * @dev returns the output amount when trading by providing the source amount
+     */
+    function tradeOutputBySourceAmount(
+        address sourceToken,
+        address targetToken,
+        uint256 sourceAmount
+    ) external view returns (uint256);
+
+    /**
+     * @dev returns the input amount when trading by providing the target amount
+     */
+    function tradeInputByTargetAmount(
+        address sourceToken,
+        address targetToken,
+        uint256 targetAmount
+    ) external view returns (uint256);
+
+}

packages/asset-swapper/package.json

@@ -39,7 +39,7 @@
     "config": {
         "publicInterfaceContracts": "ERC20BridgeSampler,BalanceChecker,FakeTaker",
         "abis:comment": "This list is auto-generated by contracts-gen. Don't edit manually.",
-        "abis": "./test/generated-artifacts/@(ApproximateBuys|BalanceChecker|BalancerSampler|BalancerV2BatchSampler|BalancerV2Common|BalancerV2Sampler|BancorSampler|CompoundSampler|CurveSampler|DODOSampler|DODOV2Sampler|ERC20BridgeSampler|FakeTaker|GMXSampler|IBalancer|IBalancerV2Vault|IBancor|ICurve|IGMX|IMStable|IMooniswap|IMultiBridge|IPlatypus|IShell|ISmoothy|IUniswapExchangeQuotes|IUniswapV2Router01|KyberDmmSampler|LidoSampler|LiquidityProviderSampler|MStableSampler|MakerPSMSampler|MooniswapSampler|NativeOrderSampler|PlatypusSampler|SamplerUtils|ShellSampler|SmoothySampler|TestNativeOrderSampler|TwoHopSampler|UniswapSampler|UniswapV2Sampler|UniswapV3Sampler|UtilitySampler).json",
+        "abis": "./test/generated-artifacts/@(ApproximateBuys|BalanceChecker|BalancerSampler|BalancerV2BatchSampler|BalancerV2Common|BalancerV2Sampler|BancorSampler|BancorV3Sampler|CompoundSampler|CurveSampler|DODOSampler|DODOV2Sampler|ERC20BridgeSampler|FakeTaker|GMXSampler|IBalancer|IBalancerV2Vault|IBancor|IBancorV3|ICurve|IGMX|IMStable|IMooniswap|IMultiBridge|IPlatypus|IShell|ISmoothy|IUniswapExchangeQuotes|IUniswapV2Router01|KyberDmmSampler|LidoSampler|LiquidityProviderSampler|MStableSampler|MakerPSMSampler|MooniswapSampler|NativeOrderSampler|PlatypusSampler|SamplerUtils|ShellSampler|SmoothySampler|TestNativeOrderSampler|TwoHopSampler|UniswapSampler|UniswapV2Sampler|UniswapV3Sampler|UtilitySampler).json",
         "postpublish": {
             "assets": []
         }

packages/asset-swapper/src/utils/market_operation_utils/constants.ts

@@ -84,6 +84,7 @@ export const SELL_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.Balancer,
             ERC20BridgeSource.BalancerV2,
             ERC20BridgeSource.Bancor,
+            ERC20BridgeSource.BancorV3,
             ERC20BridgeSource.MStable,
             ERC20BridgeSource.Mooniswap,
             ERC20BridgeSource.SushiSwap,
@@ -229,6 +230,7 @@ export const BUY_SOURCE_FILTER_BY_CHAIN_ID = valueByChainId<SourceFilters>(
             ERC20BridgeSource.Balancer,
             ERC20BridgeSource.BalancerV2,
             // ERC20BridgeSource.Bancor, // FIXME: Bancor Buys not implemented in Sampler
+            ERC20BridgeSource.BancorV3,
             ERC20BridgeSource.MStable,
             ERC20BridgeSource.Mooniswap,
             ERC20BridgeSource.Shell,
@@ -2058,6 +2060,20 @@ export const BANCOR_REGISTRY_BY_CHAIN_ID = valueByChainId<string>(
     NULL_ADDRESS,
 );
 
+export const BANCORV3_NETWORK_BY_CHAIN_ID = valueByChainId<string>(
+    {
+        [ChainId.Mainnet]: '0xeef417e1d5cc832e619ae18d2f140de2999dd4fb',
+    },
+    NULL_ADDRESS,
+);
+
+export const BANCORV3_NETWORK_INFO_BY_CHAIN_ID = valueByChainId<string>(
+    {
+        [ChainId.Mainnet]: '0x8e303d296851b320e6a697bacb979d13c9d6e760',
+    },
+    NULL_ADDRESS,
+);
+
 export const SHELL_POOLS_BY_CHAIN_ID = valueByChainId(
     {
         [ChainId.Mainnet]: {
@@ -2502,6 +2518,7 @@ export const DEFAULT_GAS_SCHEDULE: Required<FeeSchedule> = {
         }
         return gas;
     },
+    [ERC20BridgeSource.BancorV3]: () => 260e3,
     [ERC20BridgeSource.KyberDmm]: (fillData?: FillData) => {
         let gas = 170e3;
         const path = (fillData as UniswapV2FillData).tokenAddressPath;

packages/asset-swapper/src/utils/market_operation_utils/orders.ts

@@ -385,7 +385,10 @@ export function createBridgeDataForBridgeOrder(order: OptimizedMarketBridgeOrder
                 platypusFillData.tokenAddressPath,
             ]);
             break;
-
+        case ERC20BridgeSource.BancorV3:
+            const bancorV3FillData = (order as OptimizedMarketBridgeOrder<BancorFillData>).fillData;
+            bridgeData = encoder.encode([bancorV3FillData.networkAddress, bancorFillData.path, bancor]);
+            break;
         default:
             throw new Error(AggregationError.NoBridgeForSource);
     }
@@ -509,6 +512,7 @@ export const BRIDGE_ENCODERS: {
     [ERC20BridgeSource.MobiusMoney]: curveEncoder,
     // UniswapV2 like, (router, address[])
     [ERC20BridgeSource.Bancor]: routerAddressPathEncoder,
+    [ERC20BridgeSource.BancorV3]: routerAddressPathEncoder,
     [ERC20BridgeSource.UniswapV2]: routerAddressPathEncoder,
     [ERC20BridgeSource.SushiSwap]: routerAddressPathEncoder,
     [ERC20BridgeSource.CryptoCom]: routerAddressPathEncoder,

packages/asset-swapper/src/utils/market_operation_utils/sampler_operations.ts

@@ -25,6 +25,8 @@ import {
     AVALANCHE_TOKENS,
     BALANCER_V2_VAULT_ADDRESS_BY_CHAIN,
     BANCOR_REGISTRY_BY_CHAIN_ID,
+    BANCORV3_NETWORK_BY_CHAIN_ID,
+    BANCORV3_NETWORK_INFO_BY_CHAIN_ID,
     BEETHOVEN_X_SUBGRAPH_URL_BY_CHAIN,
     BEETHOVEN_X_VAULT_ADDRESS_BY_CHAIN,
     COMPOUND_API_URL_BY_CHAIN_ID,
@@ -709,6 +711,36 @@ export class SamplerOperations {
         });
     }
 
+    public getBancorV3SellQuotes(
+        networkAddress: string,
+        path: string[],
+        takerFillAmounts: BigNumber[],
+    ): SourceQuoteOperation<BancorFillData> {
+        return new SamplerContractOperation({
+            source: ERC20BridgeSource.BancorV3,
+            fillData: { networkAddress, path},
+            contract: this._samplerContract,
+            function: this._samplerContract.sampleBuysFromBancorV3,
+            params: [networkAddress, path, takerFillAmounts],
+        });
+    }
+
+    // Unimplemented
+    public getBancorV3BuyQuotes(
+        networkAddress: string,
+        path: string[],
+        makerFillAmounts: BigNumber[],
+    ): SourceQuoteOperation<BancorFillData> {
+        return new SamplerContractOperation({
+            source: ERC20BridgeSource.BancorV3,
+            fillData: { networkAddress, path},
+            contract: this._samplerContract,
+            function: this._samplerContract.sampleBuysFromBancorV3,
+            params: [networkAddress, path, makerFillAmounts],
+        });
+
+    }
+
     public getMooniswapSellQuotes(
         registry: string,
         makerToken: string,
@@ -1676,6 +1708,13 @@ export class SamplerOperations {
                             ),
                         );
                     }
+                    case ERC20BridgeSource.BancorV3: {
+                        return this.getBancorV3SellQuotes(
+                            BANCORV3_NETWORK_INFO_BY_CHAIN_ID[this.chainId],
+                            [takerToken,makerToken],
+                            takerFillAmounts
+                        );
+                    }
                     default:
                         throw new Error(`Unsupported sell sample source: ${source}`);
                 }
@@ -2004,6 +2043,13 @@ export class SamplerOperations {
                             ),
                         );
                     }
+                    case ERC20BridgeSource.BancorV3: {
+                        return this.getBancorV3SellQuotes(
+                            BANCORV3_NETWORK_INFO_BY_CHAIN_ID[this.chainId],
+                            [takerToken,makerToken],
+                            makerFillAmounts
+                        );
+                    }
                     default:
                         throw new Error(`Unsupported buy sample source: ${source}`);
                 }

packages/asset-swapper/src/utils/market_operation_utils/types.ts

@@ -66,6 +66,7 @@ export enum ERC20BridgeSource {
     AaveV2 = 'Aave_V2',
     Compound = 'Compound',
     Synapse = 'Synapse',
+    BancorV3 = 'BancorV3',
     // BSC only
     PancakeSwap = 'PancakeSwap',
     PancakeSwapV2 = 'PancakeSwap_V2',
@@ -263,6 +264,11 @@ export interface BancorFillData extends FillData {
     networkAddress: string;
 }
 
+export interface BancorV3FillData extends FillData {
+    path: string[];
+    networkAddress: string;
+}
+
 export interface MooniswapFillData extends FillData {
     poolAddress: string;
 }

packages/asset-swapper/test/artifacts.ts

@@ -12,6 +12,7 @@ import * as BalancerV2BatchSampler from '../test/generated-artifacts/BalancerV2B
 import * as BalancerV2Common from '../test/generated-artifacts/BalancerV2Common.json';
 import * as BalancerV2Sampler from '../test/generated-artifacts/BalancerV2Sampler.json';
 import * as BancorSampler from '../test/generated-artifacts/BancorSampler.json';
+import * as BancorV3Sampler from '../test/generated-artifacts/BancorV3Sampler.json';
 import * as CompoundSampler from '../test/generated-artifacts/CompoundSampler.json';
 import * as CurveSampler from '../test/generated-artifacts/CurveSampler.json';
 import * as DODOSampler from '../test/generated-artifacts/DODOSampler.json';
@@ -22,6 +23,7 @@ import * as GMXSampler from '../test/generated-artifacts/GMXSampler.json';
 import * as IBalancer from '../test/generated-artifacts/IBalancer.json';
 import * as IBalancerV2Vault from '../test/generated-artifacts/IBalancerV2Vault.json';
 import * as IBancor from '../test/generated-artifacts/IBancor.json';
+import * as IBancorV3 from '../test/generated-artifacts/IBancorV3.json';
 import * as ICurve from '../test/generated-artifacts/ICurve.json';
 import * as IGMX from '../test/generated-artifacts/IGMX.json';
 import * as IMooniswap from '../test/generated-artifacts/IMooniswap.json';
@@ -57,6 +59,7 @@ export const artifacts = {
     BalancerV2Common: BalancerV2Common as ContractArtifact,
     BalancerV2Sampler: BalancerV2Sampler as ContractArtifact,
     BancorSampler: BancorSampler as ContractArtifact,
+    BancorV3Sampler: BancorV3Sampler as ContractArtifact,
     CompoundSampler: CompoundSampler as ContractArtifact,
     CurveSampler: CurveSampler as ContractArtifact,
     DODOSampler: DODOSampler as ContractArtifact,
@@ -83,6 +86,7 @@ export const artifacts = {
     IBalancer: IBalancer as ContractArtifact,
     IBalancerV2Vault: IBalancerV2Vault as ContractArtifact,
     IBancor: IBancor as ContractArtifact,
+    IBancorV3: IBancorV3 as ContractArtifact,
     ICurve: ICurve as ContractArtifact,
     IGMX: IGMX as ContractArtifact,
     IMStable: IMStable as ContractArtifact,

packages/asset-swapper/test/wrappers.ts

@@ -10,6 +10,7 @@ export * from '../test/generated-wrappers/balancer_v2_batch_sampler';
 export * from '../test/generated-wrappers/balancer_v2_common';
 export * from '../test/generated-wrappers/balancer_v2_sampler';
 export * from '../test/generated-wrappers/bancor_sampler';
+export * from '../test/generated-wrappers/bancor_v3_sampler';
 export * from '../test/generated-wrappers/compound_sampler';
 export * from '../test/generated-wrappers/curve_sampler';
 export * from '../test/generated-wrappers/d_o_d_o_sampler';
@@ -20,6 +21,7 @@ export * from '../test/generated-wrappers/g_m_x_sampler';
 export * from '../test/generated-wrappers/i_balancer';
 export * from '../test/generated-wrappers/i_balancer_v2_vault';
 export * from '../test/generated-wrappers/i_bancor';
+export * from '../test/generated-wrappers/i_bancor_v3';
 export * from '../test/generated-wrappers/i_curve';
 export * from '../test/generated-wrappers/i_m_stable';
 export * from '../test/generated-wrappers/i_mooniswap';

packages/asset-swapper/tsconfig.json

@@ -13,6 +13,7 @@
         "test/generated-artifacts/BalancerV2Common.json",
         "test/generated-artifacts/BalancerV2Sampler.json",
         "test/generated-artifacts/BancorSampler.json",
+        "test/generated-artifacts/BancorV3Sampler.json",
         "test/generated-artifacts/CompoundSampler.json",
         "test/generated-artifacts/CurveSampler.json",
         "test/generated-artifacts/DODOSampler.json",
@@ -23,6 +24,7 @@
         "test/generated-artifacts/IBalancer.json",
         "test/generated-artifacts/IBalancerV2Vault.json",
         "test/generated-artifacts/IBancor.json",
+        "test/generated-artifacts/IBancorV3.json",
         "test/generated-artifacts/ICurve.json",
         "test/generated-artifacts/IGMX.json",
         "test/generated-artifacts/IMStable.json",

packages/protocol-utils/src/transformer_utils.ts

@@ -138,6 +138,7 @@ export enum BridgeProtocol {
     BalancerV2Batch,
     GMX,
     Platypus,
+    BancorV3,
 }
 // tslint:enable: enum-naming