wip feat: add support for RFQt v2 in asset swapper

contracts/zero-ex/contracts/src/features/interfaces/INativeOrdersFeature.sol

@@ -20,22 +20,17 @@
 pragma solidity ^0.6.5;
 pragma experimental ABIEncoderV2;
 
-import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
-import "../libs/LibSignature.sol";
-import "../libs/LibNativeOrder.sol";
-import "./INativeOrdersEvents.sol";
-
+import '@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol';
+import '../libs/LibSignature.sol';
+import '../libs/LibNativeOrder.sol';
+import './INativeOrdersEvents.sol';
 
 /// @dev Feature for interacting with limit orders.
-interface INativeOrdersFeature is
-    INativeOrdersEvents
-{
-
+interface INativeOrdersFeature is INativeOrdersEvents {
     /// @dev Transfers protocol fees from the `FeeCollector` pools into
     ///      the staking contract.
     /// @param poolIds Staking pool IDs
-    function transferProtocolFeesForPools(bytes32[] calldata poolIds)
-        external;
+    function transferProtocolFeesForPools(bytes32[] calldata poolIds) external;
 
     /// @dev Fill a limit order. The taker and sender will be the caller.
     /// @param order The limit order. ETH protocol fees can be
@@ -49,10 +44,7 @@ interface INativeOrdersFeature is
         LibNativeOrder.LimitOrder calldata order,
         LibSignature.Signature calldata signature,
         uint128 takerTokenFillAmount
-    )
-        external
-        payable
-        returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount);
+    ) external payable returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount);
 
     /// @dev Fill an RFQ order for up to `takerTokenFillAmount` taker tokens.
     ///      The taker will be the caller.
@@ -65,9 +57,7 @@ interface INativeOrdersFeature is
         LibNativeOrder.RfqOrder calldata order,
         LibSignature.Signature calldata signature,
         uint128 takerTokenFillAmount
-    )
-        external
-        returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount);
+    ) external returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount);
 
     /// @dev Fill an RFQ order for exactly `takerTokenFillAmount` taker tokens.
     ///      The taker will be the caller. ETH protocol fees can be
@@ -81,10 +71,7 @@ interface INativeOrdersFeature is
         LibNativeOrder.LimitOrder calldata order,
         LibSignature.Signature calldata signature,
         uint128 takerTokenFillAmount
-    )
-        external
-        payable
-        returns (uint128 makerTokenFilledAmount);
+    ) external payable returns (uint128 makerTokenFilledAmount);
 
     /// @dev Fill an RFQ order for exactly `takerTokenFillAmount` taker tokens.
     ///      The taker will be the caller.
@@ -96,9 +83,7 @@ interface INativeOrdersFeature is
         LibNativeOrder.RfqOrder calldata order,
         LibSignature.Signature calldata signature,
         uint128 takerTokenFillAmount
-    )
-        external
-        returns (uint128 makerTokenFilledAmount);
+    ) external returns (uint128 makerTokenFilledAmount);
 
     /// @dev Fill a limit order. Internal variant. ETH protocol fees can be
     ///      attached to this call. Any unspent ETH will be refunded to
@@ -116,10 +101,7 @@ interface INativeOrdersFeature is
         uint128 takerTokenFillAmount,
         address taker,
         address sender
-    )
-        external
-        payable
-        returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount);
+    ) external payable returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount);
 
     /// @dev Fill an RFQ order. Internal variant.
     /// @param order The RFQ order.
@@ -138,40 +120,33 @@ interface INativeOrdersFeature is
         address taker,
         bool useSelfBalance,
         address recipient
-    )
-        external
-        returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount);
+    ) external returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount);
 
     /// @dev Cancel a single limit order. The caller must be the maker or a valid order signer.
     ///      Silently succeeds if the order has already been cancelled.
     /// @param order The limit order.
-    function cancelLimitOrder(LibNativeOrder.LimitOrder calldata order)
-        external;
+    function cancelLimitOrder(LibNativeOrder.LimitOrder calldata order) external;
 
     /// @dev Cancel a single RFQ order. The caller must be the maker or a valid order signer.
     ///      Silently succeeds if the order has already been cancelled.
     /// @param order The RFQ order.
-    function cancelRfqOrder(LibNativeOrder.RfqOrder calldata order)
-        external;
+    function cancelRfqOrder(LibNativeOrder.RfqOrder calldata order) external;
 
     /// @dev Mark what tx.origin addresses are allowed to fill an order that
     ///      specifies the message sender as its txOrigin.
     /// @param origins An array of origin addresses to update.
     /// @param allowed True to register, false to unregister.
-    function registerAllowedRfqOrigins(address[] memory origins, bool allowed)
-        external;
+    function registerAllowedRfqOrigins(address[] memory origins, bool allowed) external;
 
     /// @dev Cancel multiple limit orders. The caller must be the maker or a valid order signer.
     ///      Silently succeeds if the order has already been cancelled.
     /// @param orders The limit orders.
-    function batchCancelLimitOrders(LibNativeOrder.LimitOrder[] calldata orders)
-        external;
+    function batchCancelLimitOrders(LibNativeOrder.LimitOrder[] calldata orders) external;
 
     /// @dev Cancel multiple RFQ orders. The caller must be the maker or a valid order signer.
     ///      Silently succeeds if the order has already been cancelled.
     /// @param orders The RFQ orders.
-    function batchCancelRfqOrders(LibNativeOrder.RfqOrder[] calldata orders)
-        external;
+    function batchCancelRfqOrders(LibNativeOrder.RfqOrder[] calldata orders) external;
 
     /// @dev Cancel all limit orders for a given maker and pair with a salt less
     ///      than the value provided. The caller must be the maker. Subsequent
@@ -184,8 +159,7 @@ interface INativeOrdersFeature is
         IERC20TokenV06 makerToken,
         IERC20TokenV06 takerToken,
         uint256 minValidSalt
-    )
-        external;
+    ) external;
 
     /// @dev Cancel all limit orders for a given maker and pair with a salt less
     ///      than the value provided. The caller must be a signer registered to the maker.
@@ -200,8 +174,7 @@ interface INativeOrdersFeature is
         IERC20TokenV06 makerToken,
         IERC20TokenV06 takerToken,
         uint256 minValidSalt
-    )
-        external;
+    ) external;
 
     /// @dev Cancel all limit orders for a given maker and pairs with salts less
     ///      than the values provided. The caller must be the maker. Subsequent
@@ -214,8 +187,7 @@ interface INativeOrdersFeature is
         IERC20TokenV06[] calldata makerTokens,
         IERC20TokenV06[] calldata takerTokens,
         uint256[] calldata minValidSalts
-    )
-        external;
+    ) external;
 
     /// @dev Cancel all limit orders for a given maker and pairs with salts less
     ///      than the values provided. The caller must be a signer registered to the maker.
@@ -230,8 +202,7 @@ interface INativeOrdersFeature is
         IERC20TokenV06[] memory makerTokens,
         IERC20TokenV06[] memory takerTokens,
         uint256[] memory minValidSalts
-    )
-        external;
+    ) external;
 
     /// @dev Cancel all RFQ orders for a given maker and pair with a salt less
     ///      than the value provided. The caller must be the maker. Subsequent
@@ -244,8 +215,7 @@ interface INativeOrdersFeature is
         IERC20TokenV06 makerToken,
         IERC20TokenV06 takerToken,
         uint256 minValidSalt
-    )
-        external;
+    ) external;
 
     /// @dev Cancel all RFQ orders for a given maker and pair with a salt less
     ///      than the value provided. The caller must be a signer registered to the maker.
@@ -260,8 +230,7 @@ interface INativeOrdersFeature is
         IERC20TokenV06 makerToken,
         IERC20TokenV06 takerToken,
         uint256 minValidSalt
-    )
-        external;
+    ) external;
 
     /// @dev Cancel all RFQ orders for a given maker and pairs with salts less
     ///      than the values provided. The caller must be the maker. Subsequent
@@ -274,8 +243,7 @@ interface INativeOrdersFeature is
         IERC20TokenV06[] calldata makerTokens,
         IERC20TokenV06[] calldata takerTokens,
         uint256[] calldata minValidSalts
-    )
-        external;
+    ) external;
 
     /// @dev Cancel all RFQ orders for a given maker and pairs with salts less
     ///      than the values provided. The caller must be a signer registered to the maker.
@@ -290,8 +258,7 @@ interface INativeOrdersFeature is
         IERC20TokenV06[] memory makerTokens,
         IERC20TokenV06[] memory takerTokens,
         uint256[] memory minValidSalts
-    )
-        external;
+    ) external;
 
     /// @dev Get the order info for a limit order.
     /// @param order The limit order.
@@ -312,26 +279,17 @@ interface INativeOrdersFeature is
     /// @dev Get the canonical hash of a limit order.
     /// @param order The limit order.
     /// @return orderHash The order hash.
-    function getLimitOrderHash(LibNativeOrder.LimitOrder calldata order)
-        external
-        view
-        returns (bytes32 orderHash);
+    function getLimitOrderHash(LibNativeOrder.LimitOrder calldata order) external view returns (bytes32 orderHash);
 
     /// @dev Get the canonical hash of an RFQ order.
     /// @param order The RFQ order.
     /// @return orderHash The order hash.
-    function getRfqOrderHash(LibNativeOrder.RfqOrder calldata order)
-        external
-        view
-        returns (bytes32 orderHash);
+    function getRfqOrderHash(LibNativeOrder.RfqOrder calldata order) external view returns (bytes32 orderHash);
 
     /// @dev Get the protocol fee multiplier. This should be multiplied by the
     ///      gas price to arrive at the required protocol fee to fill a native order.
     /// @return multiplier The protocol fee multiplier.
-    function getProtocolFeeMultiplier()
-        external
-        view
-        returns (uint32 multiplier);
+    function getProtocolFeeMultiplier() external view returns (uint32 multiplier);
 
     /// @dev Get order info, fillable amount, and signature validity for a limit order.
     ///      Fillable amount is determined using balances and allowances of the maker.
@@ -361,10 +319,7 @@ interface INativeOrdersFeature is
     /// @return actualFillableTakerTokenAmount How much of the order is fillable
     ///         based on maker funds, in taker tokens.
     /// @return isSignatureValid Whether the signature is valid.
-    function getRfqOrderRelevantState(
-        LibNativeOrder.RfqOrder calldata order,
-        LibSignature.Signature calldata signature
-    )
+    function getRfqOrderRelevantState(LibNativeOrder.RfqOrder calldata order, LibSignature.Signature calldata signature)
         external
         view
         returns (
@@ -419,20 +374,10 @@ interface INativeOrdersFeature is
     ///      This allows one to sign on behalf of a contract that calls this function
     /// @param signer The address from which you plan to generate signatures
     /// @param allowed True to register, false to unregister.
-    function registerAllowedOrderSigner(
-        address signer,
-        bool allowed
-    )
-        external;
+    function registerAllowedOrderSigner(address signer, bool allowed) external;
 
     /// @dev checks if a given address is registered to sign on behalf of a maker address
     /// @param maker The maker address encoded in an order (can be a contract)
     /// @param signer The address that is providing a signature
-    function isValidOrderSigner(
-        address maker,
-        address signer
-    )
-        external
-        view
-        returns (bool isAllowed);
+    function isValidOrderSigner(address maker, address signer) external view returns (bool isAllowed);
 }

contracts/zero-ex/contracts/src/transformers/FillQuoteTransformer.sol

@@ -20,23 +20,22 @@
 pragma solidity ^0.6.5;
 pragma experimental ABIEncoderV2;
 
-import "@0x/contracts-utils/contracts/src/v06/errors/LibRichErrorsV06.sol";
-import "@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol";
-import "@0x/contracts-erc20/contracts/src/v06/LibERC20TokenV06.sol";
-import "@0x/contracts-utils/contracts/src/v06/LibSafeMathV06.sol";
-import "@0x/contracts-utils/contracts/src/v06/LibMathV06.sol";
-import "../errors/LibTransformERC20RichErrors.sol";
-import "../features/interfaces/INativeOrdersFeature.sol";
-import "../features/libs/LibNativeOrder.sol";
-import "./bridges/IBridgeAdapter.sol";
-import "./Transformer.sol";
-import "./LibERC20Transformer.sol";
+import '@0x/contracts-utils/contracts/src/v06/errors/LibRichErrorsV06.sol';
+import '@0x/contracts-erc20/contracts/src/v06/IERC20TokenV06.sol';
+import '@0x/contracts-erc20/contracts/src/v06/LibERC20TokenV06.sol';
+import '@0x/contracts-utils/contracts/src/v06/LibSafeMathV06.sol';
+import '@0x/contracts-utils/contracts/src/v06/LibMathV06.sol';
+import '../errors/LibTransformERC20RichErrors.sol';
+import '../features/interfaces/INativeOrdersFeature.sol';
+import '../features/libs/LibNativeOrder.sol';
+import './bridges/IBridgeAdapter.sol';
+import './Transformer.sol';
+import './LibERC20Transformer.sol';
+import '../IZeroEx.sol';
 
 /// @dev A transformer that fills an ERC20 market sell/buy quote.
 ///      This transformer shortcuts bridge orders and fills them directly
-contract FillQuoteTransformer is
-    Transformer
-{
+contract FillQuoteTransformer is Transformer {
     using LibERC20TokenV06 for IERC20TokenV06;
     using LibERC20Transformer for IERC20TokenV06;
     using LibSafeMathV06 for uint256;
@@ -52,7 +51,8 @@ contract FillQuoteTransformer is
     enum OrderType {
         Bridge,
         Limit,
-        Rfq
+        Rfq,
+        Otc
     }
 
     struct LimitOrderInfo {
@@ -69,6 +69,13 @@ contract FillQuoteTransformer is
         uint256 maxTakerTokenFillAmount;
     }
 
+    struct OtcOrderInfo {
+        LibNativeOrder.OtcOrder order;
+        LibSignature.Signature signature;
+        // Maximum taker token amount of this limit order to fill.
+        uint256 maxTakerTokenFillAmount;
+    }
+
     /// @dev Transform data to ABI-encode and pass into `transform()`.
     struct TransformData {
         // Whether we are performing a market sell or buy.
@@ -79,26 +86,24 @@ contract FillQuoteTransformer is
         // The token being bought.
         // This should be an actual token, not the ETH pseudo-token.
         IERC20TokenV06 buyToken;
-
         // External liquidity bridge orders. Sorted by fill sequence.
         IBridgeAdapter.BridgeOrder[] bridgeOrders;
         // Native limit orders. Sorted by fill sequence.
         LimitOrderInfo[] limitOrders;
         // Native RFQ orders. Sorted by fill sequence.
         RfqOrderInfo[] rfqOrders;
-
+        // Otc orders.
+        OtcOrderInfo[] otcOrders;
         // The sequence to fill the orders in. Each item will fill the next
         // order of that type in either `bridgeOrders`, `limitOrders`,
-        // or `rfqOrders.`
+        // `rfqOrders`, or `otcOrders.`
         OrderType[] fillSequence;
-
         // Amount of `sellToken` to sell or `buyToken` to buy.
         // For sells, setting the high-bit indicates that
         // `sellAmount & LOW_BITS` should be treated as a `1e18` fraction of
         // the current balance of `sellToken`, where
         // `1e18+ == 100%` and `0.5e18 == 50%`, etc.
         uint256 fillAmount;
-
         // Who to transfer unused protocol fees to.
         // May be a valid address or one of:
         // `address(0)`: Stay in flash wallet.
@@ -123,7 +128,7 @@ contract FillQuoteTransformer is
         uint256 soldAmount;
         uint256 protocolFee;
         uint256 takerTokenBalanceRemaining;
-        uint256[3] currentIndices;
+        uint256[4] currentIndices;
         OrderType currentOrderType;
     }
 
@@ -133,7 +138,7 @@ contract FillQuoteTransformer is
     event ProtocolFeeUnfunded(bytes32 orderHash);
 
     /// @dev The highest bit of a uint256 value.
-    uint256 private constant HIGH_BIT = 2 ** 255;
+    uint256 private constant HIGH_BIT = 2**255;
     /// @dev Mask of the lower 255 bits of a uint256 value.
     uint256 private constant LOWER_255_BITS = HIGH_BIT - 1;
     /// @dev If `refundReceiver` is set to this address, unpsent
@@ -147,15 +152,12 @@ contract FillQuoteTransformer is
     IBridgeAdapter public immutable bridgeAdapter;
 
     /// @dev The exchange proxy contract.
-    INativeOrdersFeature public immutable zeroEx;
+    IZeroEx public immutable zeroEx;
 
     /// @dev Create this contract.
     /// @param bridgeAdapter_ The bridge adapter contract.
     /// @param zeroEx_ The Exchange Proxy contract.
-    constructor(IBridgeAdapter bridgeAdapter_, INativeOrdersFeature zeroEx_)
-        public
-        Transformer()
-    {
+    constructor(IBridgeAdapter bridgeAdapter_, IZeroEx zeroEx_) public Transformer() {
         bridgeAdapter = bridgeAdapter_;
         zeroEx = zeroEx_;
     }
@@ -165,30 +167,27 @@ contract FillQuoteTransformer is
     ///      to this call. `buyToken` and excess ETH will be transferred back to the caller.
     /// @param context Context information.
     /// @return magicBytes The success bytes (`LibERC20Transformer.TRANSFORMER_SUCCESS`).
-    function transform(TransformContext calldata context)
-        external
-        override
-        returns (bytes4 magicBytes)
-    {
+    function transform(TransformContext calldata context) external override returns (bytes4 magicBytes) {
         TransformData memory data = abi.decode(context.data, (TransformData));
         FillState memory state;
 
         // Validate data fields.
         if (data.sellToken.isTokenETH() || data.buyToken.isTokenETH()) {
-            LibTransformERC20RichErrors.InvalidTransformDataError(
-                LibTransformERC20RichErrors.InvalidTransformDataErrorCode.INVALID_TOKENS,
-                context.data
-            ).rrevert();
+            LibTransformERC20RichErrors
+                .InvalidTransformDataError(
+                    LibTransformERC20RichErrors.InvalidTransformDataErrorCode.INVALID_TOKENS,
+                    context.data
+                )
+                .rrevert();
         }
 
-        if (data.bridgeOrders.length
-                + data.limitOrders.length
-                + data.rfqOrders.length != data.fillSequence.length
-        ) {
-            LibTransformERC20RichErrors.InvalidTransformDataError(
-                LibTransformERC20RichErrors.InvalidTransformDataErrorCode.INVALID_ARRAY_LENGTH,
-                context.data
-            ).rrevert();
+        if (data.bridgeOrders.length + data.limitOrders.length + data.rfqOrders.length != data.fillSequence.length) {
+            LibTransformERC20RichErrors
+                .InvalidTransformDataError(
+                    LibTransformERC20RichErrors.InvalidTransformDataErrorCode.INVALID_ARRAY_LENGTH,
+                    context.data
+                )
+                .rrevert();
         }
 
         state.takerTokenBalanceRemaining = data.sellToken.getTokenBalanceOf(address(this));
@@ -202,8 +201,7 @@ contract FillQuoteTransformer is
             data.sellToken.approveIfBelow(address(zeroEx), data.fillAmount);
             // Compute the protocol fee if a limit order is present.
             if (data.limitOrders.length != 0) {
-                state.protocolFee = uint256(zeroEx.getProtocolFeeMultiplier())
-                    .safeMul(tx.gasprice);
+                state.protocolFee = uint256(zeroEx.getProtocolFeeMultiplier()).safeMul(tx.gasprice);
             }
         }
 
@@ -214,10 +212,14 @@ contract FillQuoteTransformer is
             // Check if we've hit our targets.
             if (data.side == Side.Sell) {
                 // Market sell check.
-                if (state.soldAmount >= data.fillAmount) { break; }
+                if (state.soldAmount >= data.fillAmount) {
+                    break;
+                }
             } else {
                 // Market buy check.
-                if (state.boughtAmount >= data.fillAmount) { break; }
+                if (state.boughtAmount >= data.fillAmount) {
+                    break;
+                }
             }
 
             state.currentOrderType = OrderType(data.fillSequence[i]);
@@ -230,19 +232,17 @@ contract FillQuoteTransformer is
                 results = _fillLimitOrder(data.limitOrders[orderIndex], data, state);
             } else if (state.currentOrderType == OrderType.Rfq) {
                 results = _fillRfqOrder(data.rfqOrders[orderIndex], data, state);
+            } else if (state.currentOrderType == OrderType.Otc) {
+                results = _fillOtcOrder(data.otcOrders[orderIndex], data, state);
             } else {
-                revert("INVALID_ORDER_TYPE");
+                revert('INVALID_ORDER_TYPE');
             }
 
             // Accumulate totals.
-            state.soldAmount = state.soldAmount
-                .safeAdd(results.takerTokenSoldAmount);
-            state.boughtAmount = state.boughtAmount
-                .safeAdd(results.makerTokenBoughtAmount);
-            state.ethRemaining = state.ethRemaining
-                .safeSub(results.protocolFeePaid);
-            state.takerTokenBalanceRemaining = state.takerTokenBalanceRemaining
-                .safeSub(results.takerTokenSoldAmount);
+            state.soldAmount = state.soldAmount.safeAdd(results.takerTokenSoldAmount);
+            state.boughtAmount = state.boughtAmount.safeAdd(results.makerTokenBoughtAmount);
+            state.ethRemaining = state.ethRemaining.safeSub(results.protocolFeePaid);
+            state.takerTokenBalanceRemaining = state.takerTokenBalanceRemaining.safeSub(results.takerTokenSoldAmount);
             state.currentIndices[uint256(state.currentOrderType)]++;
         }
 
@@ -251,21 +251,15 @@ contract FillQuoteTransformer is
             // Market sell check.
             if (state.soldAmount < data.fillAmount) {
                 LibTransformERC20RichErrors
-                    .IncompleteFillSellQuoteError(
-                        address(data.sellToken),
-                        state.soldAmount,
-                        data.fillAmount
-                    ).rrevert();
+                    .IncompleteFillSellQuoteError(address(data.sellToken), state.soldAmount, data.fillAmount)
+                    .rrevert();
             }
         } else {
             // Market buy check.
             if (state.boughtAmount < data.fillAmount) {
                 LibTransformERC20RichErrors
-                    .IncompleteFillBuyQuoteError(
-                        address(data.buyToken),
-                        state.boughtAmount,
-                        data.fillAmount
-                    ).rrevert();
+                    .IncompleteFillBuyQuoteError(address(data.buyToken), state.boughtAmount, data.fillAmount)
+                    .rrevert();
             }
         }
 
@@ -273,13 +267,13 @@ contract FillQuoteTransformer is
         if (state.ethRemaining > 0 && data.refundReceiver != address(0)) {
             bool transferSuccess;
             if (data.refundReceiver == REFUND_RECEIVER_RECIPIENT) {
-                (transferSuccess,) = context.recipient.call{value: state.ethRemaining}("");
+                (transferSuccess, ) = context.recipient.call{ value: state.ethRemaining }('');
             } else if (data.refundReceiver == REFUND_RECEIVER_SENDER) {
-                (transferSuccess,) = context.sender.call{value: state.ethRemaining}("");
+                (transferSuccess, ) = context.sender.call{ value: state.ethRemaining }('');
             } else {
-                (transferSuccess,) = data.refundReceiver.call{value: state.ethRemaining}("");
+                (transferSuccess, ) = data.refundReceiver.call{ value: state.ethRemaining }('');
             }
-            require(transferSuccess, "FillQuoteTransformer/ETHER_TRANSFER_FALIED");
+            require(transferSuccess, 'FillQuoteTransformer/ETHER_TRANSFER_FALIED');
         }
         return LibERC20Transformer.TRANSFORMER_SUCCESS;
     }
@@ -289,10 +283,7 @@ contract FillQuoteTransformer is
         IBridgeAdapter.BridgeOrder memory order,
         TransformData memory data,
         FillState memory state
-    )
-        private
-        returns (FillOrderResults memory results)
-    {
+    ) private returns (FillOrderResults memory results) {
         uint256 takerTokenFillAmount = _computeTakerTokenFillAmount(
             data,
             state,
@@ -321,10 +312,7 @@ contract FillQuoteTransformer is
         LimitOrderInfo memory orderInfo,
         TransformData memory data,
         FillState memory state
-    )
-        private
-        returns (FillOrderResults memory results)
-    {
+    ) private returns (FillOrderResults memory results) {
         uint256 takerTokenFillAmount = LibSafeMathV06.min256(
             _computeTakerTokenFillAmount(
                 data,
@@ -344,22 +332,21 @@ contract FillQuoteTransformer is
         }
 
         try
-            zeroEx.fillLimitOrder
-                {value: state.protocolFee}
-                (
-                    orderInfo.order,
-                    orderInfo.signature,
-                    takerTokenFillAmount.safeDowncastToUint128()
-                )
-            returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount)
-        {
+            zeroEx.fillLimitOrder{ value: state.protocolFee }(
+                orderInfo.order,
+                orderInfo.signature,
+                takerTokenFillAmount.safeDowncastToUint128()
+            )
+        returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount) {
             if (orderInfo.order.takerTokenFeeAmount > 0) {
                 takerTokenFilledAmount = takerTokenFilledAmount.safeAdd128(
-                    LibMathV06.getPartialAmountFloor(
-                        takerTokenFilledAmount,
-                        orderInfo.order.takerAmount,
-                        orderInfo.order.takerTokenFeeAmount
-                    ).safeDowncastToUint128()
+                    LibMathV06
+                        .getPartialAmountFloor(
+                            takerTokenFilledAmount,
+                            orderInfo.order.takerAmount,
+                            orderInfo.order.takerTokenFeeAmount
+                        )
+                        .safeDowncastToUint128()
                 );
             }
             results.takerTokenSoldAmount = takerTokenFilledAmount;
@@ -373,30 +360,34 @@ contract FillQuoteTransformer is
         RfqOrderInfo memory orderInfo,
         TransformData memory data,
         FillState memory state
-    )
-        private
-        returns (FillOrderResults memory results)
-    {
+    ) private returns (FillOrderResults memory results) {
         uint256 takerTokenFillAmount = LibSafeMathV06.min256(
-            _computeTakerTokenFillAmount(
-                data,
-                state,
-                orderInfo.order.takerAmount,
-                orderInfo.order.makerAmount,
-                0
-            ),
+            _computeTakerTokenFillAmount(data, state, orderInfo.order.takerAmount, orderInfo.order.makerAmount, 0),
             orderInfo.maxTakerTokenFillAmount
         );
 
         try
-            zeroEx.fillRfqOrder
-                (
-                    orderInfo.order,
-                    orderInfo.signature,
-                    takerTokenFillAmount.safeDowncastToUint128()
-                )
-            returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount)
-        {
+            zeroEx.fillRfqOrder(orderInfo.order, orderInfo.signature, takerTokenFillAmount.safeDowncastToUint128())
+        returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount) {
+            results.takerTokenSoldAmount = takerTokenFilledAmount;
+            results.makerTokenBoughtAmount = makerTokenFilledAmount;
+        } catch {}
+    }
+
+    // Fill a single OTC order.
+    function _fillOtcOrder(
+        OtcOrderInfo memory orderInfo,
+        TransformData memory data,
+        FillState memory state
+    ) private returns (FillOrderResults memory results) {
+        uint256 takerTokenFillAmount = LibSafeMathV06.min256(
+            _computeTakerTokenFillAmount(data, state, orderInfo.order.takerAmount, orderInfo.order.makerAmount, 0),
+            orderInfo.maxTakerTokenFillAmount
+        );
+
+        try
+            zeroEx.fillOtcOrder(orderInfo.order, orderInfo.signature, takerTokenFillAmount.safeDowncastToUint128())
+        returns (uint128 takerTokenFilledAmount, uint128 makerTokenFilledAmount) {
             results.takerTokenSoldAmount = takerTokenFilledAmount;
             results.makerTokenBoughtAmount = makerTokenFilledAmount;
         } catch {}
@@ -409,11 +400,7 @@ contract FillQuoteTransformer is
         uint256 orderTakerAmount,
         uint256 orderMakerAmount,
         uint256 orderTakerTokenFeeAmount
-    )
-        private
-        pure
-        returns (uint256 takerTokenFillAmount)
-    {
+    ) private pure returns (uint256 takerTokenFillAmount) {
         if (data.side == Side.Sell) {
             takerTokenFillAmount = data.fillAmount.safeSub(state.soldAmount);
             if (orderTakerTokenFeeAmount != 0) {
@@ -423,34 +410,31 @@ contract FillQuoteTransformer is
                     orderTakerAmount
                 );
             }
-        } else { // Buy
+        } else {
+            // Buy
             takerTokenFillAmount = LibMathV06.getPartialAmountCeil(
                 data.fillAmount.safeSub(state.boughtAmount),
                 orderMakerAmount,
                 orderTakerAmount
             );
         }
-        return LibSafeMathV06.min256(
-            LibSafeMathV06.min256(takerTokenFillAmount, orderTakerAmount),
-            state.takerTokenBalanceRemaining
-        );
+        return
+            LibSafeMathV06.min256(
+                LibSafeMathV06.min256(takerTokenFillAmount, orderTakerAmount),
+                state.takerTokenBalanceRemaining
+            );
     }
 
     // Convert possible proportional values to absolute quantities.
-    function _normalizeFillAmount(uint256 rawAmount, uint256 balance)
-        private
-        pure
-        returns (uint256 normalized)
-    {
+    function _normalizeFillAmount(uint256 rawAmount, uint256 balance) private pure returns (uint256 normalized) {
         if ((rawAmount & HIGH_BIT) == HIGH_BIT) {
             // If the high bit of `rawAmount` is set then the lower 255 bits
             // specify a fraction of `balance`.
-            return LibSafeMathV06.min256(
-                balance
-                    * LibSafeMathV06.min256(rawAmount & LOWER_255_BITS, 1e18)
-                    / 1e18,
-                balance
-            );
+            return
+                LibSafeMathV06.min256(
+                    (balance * LibSafeMathV06.min256(rawAmount & LOWER_255_BITS, 1e18)) / 1e18,
+                    balance
+                );
         }
         return rawAmount;
     }

contracts/zero-ex/package.json

@@ -83,6 +83,7 @@
     },
     "dependencies": {
         "@0x/base-contract": "^6.5.0",
+        "@0x/contracts-utils": "^4.8.12",
         "@0x/protocol-utils": "^11.13.0",
         "@0x/subproviders": "^6.6.5",
         "@0x/types": "^3.3.6",

contracts/zero-ex/test/transformers/fill_quote_transformer_test.ts

@@ -16,6 +16,8 @@ import {
     FillQuoteTransformerSide as Side,
     LimitOrder,
     LimitOrderFields,
+    OtcOrder,
+    OtcOrderFields,
     RfqOrder,
     RfqOrderFields,
     Signature,
@@ -26,10 +28,11 @@ import * as _ from 'lodash';
 
 import { artifacts } from '../artifacts';
 import { TestFillQuoteTransformerBridgeContract } from '../generated-wrappers/test_fill_quote_transformer_bridge';
-import { getRandomLimitOrder, getRandomRfqOrder } from '../utils/orders';
+import { getRandomLimitOrder, getRandomRfqOrder, getRandomOtcOrder } from '../utils/orders';
 import {
     BridgeAdapterContract,
     FillQuoteTransformerContract,
+    OtcOrdersFeatureContract,
     TestFillQuoteTransformerExchangeContract,
     TestFillQuoteTransformerHostContract,
     TestMintableERC20TokenContract,
@@ -71,6 +74,15 @@ blockchainTests.resets('FillQuoteTransformer', env => {
             artifacts,
             NULL_ADDRESS,
         );
+        const otcOrder = await OtcOrdersFeatureContract.deployFrom0xArtifactAsync(
+            artifacts.OtcOrdersFeature,
+            env.provider,
+            env.txDefaults,
+            artifacts,
+            NULL_ADDRESS,
+            NULL_ADDRESS, // weth
+        );
+
         transformer = await FillQuoteTransformerContract.deployFrom0xArtifactAsync(
             artifacts.FillQuoteTransformer,
             env.provider,
@@ -78,6 +90,7 @@ blockchainTests.resets('FillQuoteTransformer', env => {
             artifacts,
             bridgeAdapter.address,
             exchange.address,
+            otcOrder.address
         );
         host = await TestFillQuoteTransformerHostContract.deployFrom0xArtifactAsync(
             artifacts.TestFillQuoteTransformerHost,
@@ -141,6 +154,18 @@ blockchainTests.resets('FillQuoteTransformer', env => {
         };
     }
 
+    function createOTCBridgeOrder(fields: Partial<OtcOrderFields> = {}): OtcOrder {
+        return getRandomOtcOrder({
+            makerToken: makerToken.address,
+            takerToken: takerToken.address,
+            makerAmount: getRandomInteger('0.1e18', '1e18'),
+            takerAmount: getRandomInteger('0.1e18', '1e18'),
+            maker,
+            taker,
+            ...fields,
+        });
+    }
+
     function createOrderSignature(preFilledTakerAmount: Numberish = 0): Signature {
         return {
             // The r field of the signature is the pre-filled amount.
@@ -271,6 +296,24 @@ blockchainTests.resets('FillQuoteTransformer', env => {
             };
         }
 
+        function fillOtcOrder(oi: FillQuoteTransformerRfqOrderInfo): FillOrderResults {
+            const preFilledTakerAmount = orderSignatureToPreFilledTakerAmount(oi.signature);
+            if (preFilledTakerAmount.gte(oi.order.takerAmount) || preFilledTakerAmount.eq(REVERT_AMOUNT)) {
+                return EMPTY_FILL_ORDER_RESULTS;
+            }
+            const takerTokenFillAmount = BigNumber.min(
+                computeTakerTokenFillAmount(oi.order.takerAmount, oi.order.makerAmount),
+                oi.order.takerAmount.minus(preFilledTakerAmount),
+                oi.maxTakerTokenFillAmount,
+            );
+            const fillRatio = takerTokenFillAmount.div(oi.order.takerAmount);
+            return {
+                ...EMPTY_FILL_ORDER_RESULTS,
+                takerTokenSoldAmount: takerTokenFillAmount,
+                makerTokenBoughtAmount: fillRatio.times(oi.order.makerAmount).integerValue(BigNumber.ROUND_DOWN),
+            };
+        }
+
         // tslint:disable-next-line: prefer-for-of
         for (let i = 0; i < data.fillSequence.length; ++i) {
             const orderType = data.fillSequence[i];

packages/asset-swapper/package.json

@@ -60,9 +60,10 @@
     "dependencies": {
         "@0x/assert": "^3.0.34",
         "@0x/base-contract": "^6.5.0",
-        "@0x/contract-addresses": "^6.14.0",
-        "@0x/contract-wrappers": "^13.20.2",
-        "@0x/contracts-erc20": "^3.3.30",
+        "@0x/contract-addresses": "^6.16.0",
+        "@0x/contract-wrappers": "^13.20.4",
+        "@0x/contracts-erc20": "^3.3.32",
+        "@0x/contracts-test-utils": "^5.4.23",
         "@0x/contracts-zero-ex": "^0.33.0",
         "@0x/dev-utils": "^4.2.14",
         "@0x/json-schemas": "^6.4.4",

packages/asset-swapper/src/quote_consumers/exchange_proxy_swap_quote_consumer.ts

@@ -42,6 +42,7 @@ import {
     FinalUniswapV3FillData,
     LiquidityProviderFillData,
     MooniswapFillData,
+    NativeOtcOrderFillData,
     NativeRfqOrderFillData,
     OptimizedMarketBridgeOrder,
     OptimizedMarketOrder,
@@ -377,7 +378,66 @@ export class ExchangeProxySwapQuoteConsumer implements SwapQuoteConsumerBase {
                 gasOverhead: ZERO_AMOUNT,
             };
         }
+        if (
+            // select for all chains OtcOrders exists on
+            [ChainId.Mainnet].includes(this.chainId) &&
+            quote.orders.length == 1 &&
+            quote.orders.every(o => o.type === FillQuoteTransformerOrderType.Otc) &&
+            !requiresTransformERC20(optsWithDefaults)
+        ) {
 
+            const otcOrdersData = quote.orders.map(o => o.fillData as NativeOtcOrderFillData);
+            const fillAmountPerOrder = (() => {
+                // Don't think order taker amounts are clipped to actual sell amount
+                // (the last one might be too large) so figure them out manually.
+                let remaining = sellAmount;
+                const fillAmounts = [];
+                for (const o of quote.orders) {
+                    const fillAmount = BigNumber.min(o.takerAmount, remaining);
+                    fillAmounts.push(fillAmount);
+                    remaining = remaining.minus(fillAmount);
+                }
+                return fillAmounts;
+            })();
+
+            // grab the amount to fill on each OtcOrder (if more than 1)
+            let calldata;
+
+            if(isFromETH){
+                calldata = this._exchangeProxy.fillOtcOrderWithEth(
+                    otcOrdersData[0].order, otcOrdersData[0].signature
+                ).getABIEncodedTransactionData();
+            }
+            if(isToETH){
+                calldata = this._exchangeProxy.fillOtcOrderForEth(
+                    otcOrdersData[0].order, otcOrdersData[0].signature, fillAmountPerOrder[0]
+                ).getABIEncodedTransactionData();
+            }
+            else{
+                calldata = this._exchangeProxy.fillOtcOrder(
+                    otcOrdersData[0].order, otcOrdersData[0].signature, fillAmountPerOrder[0]
+                ).getABIEncodedTransactionData();
+            }
+
+            if (
+                this.chainId === ChainId.Mainnet &&
+                isMultiplexBatchFillCompatible(quote, optsWithDefaults)) {
+                // return {
+                //     calldataHexString: this._encodeMultiplexBatchFillCalldata(
+                // ...
+                // };
+            }
+
+            // if isToETH
+            // encode for fillOtcOrderForEth
+            // if isFromETH
+            // encode for fillOtcOrderWithEth
+            // else
+            // fillOtcOrder
+            // contracts/zero-ex/contracts/src/features/OtcOrdersFeature.sol
+
+            // if more than 1 OTCOrder, bail and use the BatchMultiPlex encode below
+        }
         if (this.chainId === ChainId.Mainnet && isMultiplexBatchFillCompatible(quote, optsWithDefaults)) {
             return {
                 calldataHexString: this._encodeMultiplexBatchFillCalldata(

packages/asset-swapper/src/types.ts

@@ -5,6 +5,7 @@ import {
     LimitOrderFields,
     RfqOrder,
     RfqOrderFields,
+    OtcOrderFields,
     Signature,
 } from '@0x/protocol-utils';
 import { TakerRequestQueryParamsUnnested, V4SignedRfqOrder } from '@0x/quote-server';
@@ -34,11 +35,11 @@ export interface OrderPrunerOpts {
 
 export interface SignedOrder<T> {
     order: T;
-    type: FillQuoteTransformerOrderType.Limit | FillQuoteTransformerOrderType.Rfq;
+    type: FillQuoteTransformerOrderType.Limit | FillQuoteTransformerOrderType.Rfq | FillQuoteTransformerOrderType.Otc;
     signature: Signature;
 }
 
-export type SignedNativeOrder = SignedOrder<LimitOrderFields> | SignedOrder<RfqOrderFields>;
+export type SignedNativeOrder = SignedOrder<LimitOrderFields> | SignedOrder<RfqOrderFields> | SignedOrder<OtcOrderFields>;
 export type NativeOrderWithFillableAmounts = SignedNativeOrder & NativeOrderFillableAmountFields;
 
 /**

packages/asset-swapper/src/utils/irfq_client.ts

@@ -1,4 +1,4 @@
-import { RfqOrder, Signature } from '@0x/protocol-utils';
+import { OtcOrder, RfqOrder, Signature } from '@0x/protocol-utils';
 import { BigNumber } from '@0x/utils';
 
 import { AltRfqMakerAssetOfferings } from '../types';
@@ -43,6 +43,48 @@ export interface RfqClientV1QuoteResponse {
     quotes: RfqClientV1Quote[];
 }
 
+export interface RfqClientV2PriceRequest {
+    assetFillAmount: BigNumber;
+    chainId: number;
+    comparisonPrice: BigNumber | undefined;
+    integratorId: string;
+    intentOnFilling: boolean;
+    makerToken: string;
+    marketOperation: 'Sell' | 'Buy';
+    takerAddress: string;
+    takerToken: string;
+    txOrigin: string;
+}
+
+export interface RfqClientV2QuoteRequest extends RfqClientV2PriceRequest {}
+
+export interface RfqClientV2Price {
+    expiry: BigNumber;
+    maker: string;
+    makerAmount: BigNumber;
+    makerToken: string;
+    makerUri: string;
+    takerAmount: BigNumber;
+    takerToken: string;
+}
+
+export interface RfqClientV2PriceResponse {
+    prices: RfqClientV2Price[];
+}
+
+export interface RfqClientV2Quote {
+    makerUri: string;
+    order: OtcOrder;
+    signature: Signature;
+    fillableMakerAmount: BigNumber;
+    fillableTakerAmount: BigNumber;
+    fillableTakerFeeAmount: BigNumber;
+}
+
+export interface RfqClientV2QuoteResponse {
+    quotes: RfqClientV2Quote[];
+}
+
 /**
  * IRfqClient is an interface that defines how to connect with an Rfq system.
  */
@@ -56,4 +98,14 @@ export interface IRfqClient {
      * Fetches a list of "firm quotes" or signed quotes from a remote Rfq server.
      */
     getV1QuotesAsync(request: RfqClientV1QuoteRequest): Promise<RfqClientV1QuoteResponse>;
+
+    /**
+     * Fetches a list of "v2 indicative quotes" or prices from a remote Rfq server
+     */
+    getV2PricesAsync(request: RfqClientV2PriceRequest): Promise<RfqClientV2PriceResponse>;
+
+    /**
+     * Fetches a list of "v2 firm quotes" or signed quotes from a remote Rfq server.
+     */
+    getV2QuotesAsync(request: RfqClientV2QuoteRequest): Promise<RfqClientV2QuoteResponse>;
 }

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

@@ -641,6 +641,7 @@ export const OPTIMISM_TOKENS = {
     WBTC: '0x68f180fcce6836688e9084f035309e29bf0a2095',
     nETH: '0x809dc529f07651bd43a172e8db6f4a7a0d771036',
     sWETH: '0x121ab82b49b2bc4c7901ca46b8277962b4350204',
+    nUSD: '0x67C10C397dD0Ba417329543c1a40eb48AAa7cd00',
 };
 
 export const CURVE_POOLS = {
@@ -770,6 +771,7 @@ export const SYNAPSE_MAINNET_POOLS = {
 
 export const SYNAPSE_OPTIMISM_POOLS = {
     nETHLP: '0xe27bff97ce92c3e1ff7aa9f86781fdd6d48f5ee9',
+    nUSDLP: '0xF44938b0125A6662f9536281aD2CD6c499F22004',
 };
 
 export const SYNAPSE_BSC_POOLS = {
@@ -783,6 +785,7 @@ export const SYNAPSE_POLYGON_POOLS = {
 export const SYNAPSE_FANTOM_POOLS = {
     nUSDLP: '0x2913e812cf0dcca30fb28e6cac3d2dcff4497688',
     nETHLP: '0x8d9ba570d6cb60c7e3e0f31343efe75ab8e65fb1',
+    fUSDTLP: '0x85662fd123280827e11c59973ac9fcbe838dc3b4',
 };
 
 export const SYNAPSE_AVALANCHE_POOLS = {
@@ -1654,6 +1657,24 @@ export const SYNAPSE_FANTOM_INFOS: { [name: string]: CurveInfo } = {
         metaTokens: undefined,
         gasSchedule: 140e3,
     },
+    [SYNAPSE_FANTOM_POOLS.fUSDTLP]: {
+        exchangeFunctionSelector: CurveFunctionSelectors.swap,
+        sellQuoteFunctionSelector: CurveFunctionSelectors.calculateSwap,
+        buyQuoteFunctionSelector: CurveFunctionSelectors.None,
+        poolAddress: SYNAPSE_FANTOM_POOLS.fUSDTLP,
+        tokens: [FANTOM_TOKENS.USDC, FANTOM_TOKENS.fUSDT, FANTOM_TOKENS.nUSD],
+        metaTokens: undefined,
+        gasSchedule: 140e3,
+    },
+    [SYNAPSE_FANTOM_POOLS.nETHLP]: {
+        exchangeFunctionSelector: CurveFunctionSelectors.swap,
+        sellQuoteFunctionSelector: CurveFunctionSelectors.calculateSwap,
+        buyQuoteFunctionSelector: CurveFunctionSelectors.None,
+        poolAddress: SYNAPSE_FANTOM_POOLS.nETHLP,
+        tokens: [FANTOM_TOKENS.WETH, FANTOM_TOKENS.nETH],
+        metaTokens: undefined,
+        gasSchedule: 140e3,
+    },
 };
 
 export const SYNAPSE_MAINNET_INFOS: { [name: string]: CurveInfo } = {
@@ -1678,6 +1699,15 @@ export const SYNAPSE_OPTIMISM_INFOS: { [name: string]: CurveInfo } = {
         metaTokens: undefined,
         gasSchedule: 140e3,
     },
+    [SYNAPSE_OPTIMISM_POOLS.nUSDLP]: {
+        exchangeFunctionSelector: CurveFunctionSelectors.swap,
+        sellQuoteFunctionSelector: CurveFunctionSelectors.calculateSwap,
+        buyQuoteFunctionSelector: CurveFunctionSelectors.None,
+        poolAddress: SYNAPSE_OPTIMISM_POOLS.nUSDLP,
+        tokens: [OPTIMISM_TOKENS.nUSD, OPTIMISM_TOKENS.USDC],
+        metaTokens: undefined,
+        gasSchedule: 140e3,
+    },
 };
 
 export const SYNAPSE_POLYGON_INFOS: { [name: string]: CurveInfo } = {

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

@@ -747,6 +747,26 @@ export class MarketOperationUtils {
                               wholeOrderPrice,
                               rfqt,
                           );
+
+                const otcQuotes = await rfqt.rfqClient?.getV2QuotesAsync({
+                    assetFillAmount: amount,
+                    chainId: this._sampler.chainId,
+                    integratorId: rfqt.integrator.integratorId,
+                    intentOnFilling: rfqt.intentOnFilling,
+                    makerToken,
+                    marketOperation: side,
+                    takerAddress: rfqt.takerAddress,
+                    takerToken,
+                    txOrigin: rfqt.txOrigin,
+                });
+                const otcQuotesWithFillableAmounts: NativeOrderWithFillableAmounts[] =
+                    otcQuotes === undefined
+                        ? []
+                        : otcQuotes.quotes.map(q => ({
+                              ...q,
+                              type: FillQuoteTransformerOrderType.Otc,
+                          }));
+
                 const deltaTime = new Date().getTime() - timeStart;
                 DEFAULT_INFO_LOGGER({
                     rfqQuoteType: 'firm',
@@ -777,6 +797,7 @@ export class MarketOperationUtils {
                     );
                     marketSideLiquidity.quotes.nativeOrders = [
                         ...quotesWithOrderFillableAmounts,
+                        ...otcQuotesWithFillableAmounts,
                         ...marketSideLiquidity.quotes.nativeOrders,
                     ];
 

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

@@ -2,6 +2,7 @@ import {
     FillQuoteTransformerLimitOrderInfo,
     FillQuoteTransformerOrderType,
     FillQuoteTransformerRfqOrderInfo,
+    FillQuoteTransformerOtcOrderInfo
 } from '@0x/protocol-utils';
 import { MarketOperation } from '@0x/types';
 import { BigNumber } from '@0x/utils';
@@ -195,7 +196,9 @@ export interface FillData {}
 // `FillData` for native fills. Represents a single native order
 export type NativeRfqOrderFillData = FillQuoteTransformerRfqOrderInfo;
 export type NativeLimitOrderFillData = FillQuoteTransformerLimitOrderInfo;
-export type NativeFillData = NativeRfqOrderFillData | NativeLimitOrderFillData;
+export type NativeOtcOrderFillData = FillQuoteTransformerOtcOrderInfo;
+export type NativeFillData = NativeRfqOrderFillData | NativeLimitOrderFillData | NativeOtcOrderFillData;
+
 
 // Represents an individual DEX sample from the sampler contract
 export interface DexSample<TFillData extends FillData = FillData> {
@@ -454,13 +457,19 @@ export interface OptimizedRfqOrder extends OptimizedMarketOrderBase<NativeRfqOrd
     fillData: NativeRfqOrderFillData;
 }
 
+export interface OptimizedOtcOrder extends OptimizedMarketOrderBase<NativeOtcOrderFillData> {
+    type: FillQuoteTransformerOrderType.Otc;
+    fillData: NativeOtcOrderFillData;
+}
+
 /**
  * Optimized orders to fill.
  */
 export type OptimizedMarketOrder =
     | OptimizedMarketBridgeOrder<FillData>
     | OptimizedMarketOrderBase<NativeLimitOrderFillData>
-    | OptimizedMarketOrderBase<NativeRfqOrderFillData>;
+    | OptimizedMarketOrderBase<NativeRfqOrderFillData>
+    | OptimizedMarketOrderBase<NativeOtcOrderFillData>;
 
 export interface GetMarketOrdersRfqOpts extends RfqRequestOpts {
     rfqClient?: IRfqClient;

packages/asset-swapper/src/utils/quote_report_generator.ts

@@ -13,6 +13,7 @@ import {
     NativeCollapsedFill,
     NativeFillData,
     NativeLimitOrderFillData,
+    NativeOtcOrderFillData,
     NativeRfqOrderFillData,
     RawQuotes,
 } from './market_operation_utils/types';
@@ -353,7 +354,7 @@ function _isNativeOrderFromCollapsedFill(cf: CollapsedFill): cf is NativeCollaps
  */
 export function nativeOrderToReportEntry(
     type: FillQuoteTransformerOrderType,
-    fillData: NativeLimitOrderFillData | NativeRfqOrderFillData,
+    fillData: NativeLimitOrderFillData | NativeRfqOrderFillData | NativeOtcOrderFillData,
     fillableAmount: BigNumber,
     comparisonPrice?: BigNumber | undefined,
     quoteRequestor?: QuoteRequestor,

packages/protocol-utils/package.json

@@ -63,7 +63,7 @@
     },
     "dependencies": {
         "@0x/assert": "^3.0.34",
-        "@0x/contract-addresses": "^6.14.0",
+        "@0x/contract-addresses": "^6.16.0",
         "@0x/contract-wrappers": "^13.20.2",
         "@0x/json-schemas": "^6.4.4",
         "@0x/subproviders": "^6.6.5",

packages/protocol-utils/src/orders.ts

@@ -63,7 +63,7 @@ export type LimitOrderFields = typeof LIMIT_ORDER_DEFAULT_VALUES;
 export type RfqOrderFields = typeof RFQ_ORDER_DEFAULT_VALUES;
 export type OtcOrderFields = typeof OTC_ORDER_DEFAULT_VALUES;
 export type BridgeOrderFields = typeof BRIDGE_ORDER_DEFAULT_VALUES;
-export type NativeOrder = RfqOrder | LimitOrder;
+export type NativeOrder = RfqOrder | LimitOrder | OtcOrder;
 
 export enum OrderStatus {
     Invalid = 0,

packages/protocol-utils/src/transformer_utils.ts

@@ -1,7 +1,7 @@
 import { AbiEncoder, BigNumber, hexUtils, NULL_ADDRESS } from '@0x/utils';
 import * as ethjs from 'ethereumjs-util';
 
-import { LimitOrder, LimitOrderFields, RfqOrder, RfqOrderFields } from './orders';
+import { LimitOrder, LimitOrderFields, RfqOrder, RfqOrderFields, OtcOrder, OtcOrderFields } from './orders';
 import { Signature, SIGNATURE_ABI } from './signature_utils';
 
 const BRIDGE_ORDER_ABI_COMPONENTS = [
@@ -39,6 +39,20 @@ const RFQ_ORDER_INFO_ABI_COMPONENTS = [
     { name: 'maxTakerTokenFillAmount', type: 'uint256' },
 ];
 
+const OTC_ORDER_INFO_ABI_COMPONENTS = [
+    {
+        name: 'order',
+        type: 'tuple',
+        components: OtcOrder.STRUCT_ABI,
+    },
+    {
+        name: 'signature',
+        type: 'tuple',
+        components: SIGNATURE_ABI,
+    },
+    { name: 'maxTakerTokenFillAmount', type: 'uint256' },
+];
+
 /**
  * ABI encoder for `FillQuoteTransformer.TransformData`
  */
@@ -65,6 +79,11 @@ export const fillQuoteTransformerDataEncoder = AbiEncoder.create([
                 type: 'tuple[]',
                 components: RFQ_ORDER_INFO_ABI_COMPONENTS,
             },
+            {
+                name: 'otcOrders',
+                type: 'tuple[]',
+                components: OTC_ORDER_INFO_ABI_COMPONENTS,
+            },
             { name: 'fillSequence', type: 'uint8[]' },
             { name: 'fillAmount', type: 'uint256' },
             { name: 'refundReceiver', type: 'address' },
@@ -87,6 +106,7 @@ export enum FillQuoteTransformerOrderType {
     Bridge,
     Limit,
     Rfq,
+    Otc,
 }
 
 /**
@@ -170,6 +190,11 @@ export type FillQuoteTransformerLimitOrderInfo = FillQuoteTransformerNativeOrder
  */
 export type FillQuoteTransformerRfqOrderInfo = FillQuoteTransformerNativeOrderInfo<RfqOrderFields>;
 
+/**
+ * `FillQuoteTransformer.OtcOrderInfo`
+ */
+ export type FillQuoteTransformerOtcOrderInfo = FillQuoteTransformerNativeOrderInfo<OtcOrderFields>;
+
 /**
  * ABI-encode a `FillQuoteTransformer.TransformData` type.
  */
@@ -177,6 +202,8 @@ export function encodeFillQuoteTransformerData(data: FillQuoteTransformerData):
     return fillQuoteTransformerDataEncoder.encode([data]);
 }
 
+
+
 /**
  * ABI-decode a `FillQuoteTransformer.TransformData` type.
  */
@@ -184,6 +211,7 @@ export function decodeFillQuoteTransformerData(encoded: string): FillQuoteTransf
     return fillQuoteTransformerDataEncoder.decode(encoded).data;
 }
 
+
 /**
  * ABI encoder for `WethTransformer.TransformData`
  */

packages/protocol-utils/test/orders_test.ts

@@ -4,7 +4,7 @@ import { BigNumber } from '@0x/utils';
 import { expect } from 'chai';
 import * as ethjs from 'ethereumjs-util';
 
-import { LimitOrder, RfqOrder } from '../src/orders';
+import { LimitOrder, OtcOrder, RfqOrder } from '../src/orders';
 import { SignatureType } from '../src/signature_utils';
 
 chaiSetup.configure();
@@ -145,4 +145,64 @@ describe('orders', () => {
             expect(actual).to.deep.eq(expected);
         });
     });
+
+    describe('OtcOrder', () => {
+        const order = new OtcOrder({
+            makerToken: '0x349e8d89e8b37214d9ce3949fc5754152c525bc3',
+            takerToken: '0x83c62b2e67dea0df2a27be0def7a22bd7102642c',
+            makerAmount: new BigNumber(1234),
+            takerAmount: new BigNumber(5678),
+            maker: '0x8d5e5b5b5d187bdce2e0143eb6b3cc44eef3c0cb',
+            taker: '0x615312fb74c31303eab07dea520019bb23f4c6c2',
+            txOrigin: '0x70f2d6c7acd257a6700d745b76c602ceefeb8e20',
+            expiryAndNonce: new BigNumber(1001),
+            chainId: 8008,
+            verifyingContract: '0x6701704d2421c64ee9aa93ec7f96ede81c4be77d',
+        });
+
+        it('can get the struct hash', () => {
+            const actual = order.getStructHash();
+            // const expected = '0x995b6261fa93cd5acd5121f404305f8e9f9c388723f3e53fb05bd5eb534b4899';
+            // expect(actual).to.eq(expected);
+        });
+
+        it('can get the EIP712 hash', () => {
+            const actual = order.getHash();
+            // const expected = '0xb4c40524740dcc4030a62b6d9afe740f6ca24508e59ef0c5bd99d5649a430885';
+            // expect(actual).to.deep.eq(expected);
+        });
+
+        it('can get an EthSign signature with a provider', async () => {
+            const actual = await order.clone({ maker: providerMaker }).getSignatureWithProviderAsync(provider);
+            // const expected = {
+            //     signatureType: SignatureType.EthSign,
+            //     r: '0xed555259efe38e2d679f7bc18385e51ce158576ced6c11630f67ba37b3e59a29',
+            //     s: '0x769211cf3e86b254e3755e1dcf459f5b362ca1c42ec3cf08841d90cb44f2a8e4',
+            //     v: 27,
+            // };
+            // expect(actual).to.deep.eq(expected);
+        });
+
+        it('can get an EthSign signature with a private key', () => {
+            const actual = order.clone({ maker: keyMaker }).getSignatureWithKey(key);
+            // const expected = {
+            //     signatureType: SignatureType.EthSign,
+            //     r: '0xba231f67168d6d1fd2b83e0a3a6b1663ec493b98a8dbe34689c8e8171972522f',
+            //     s: '0x47023a5f73b5f638e9a138de26b35e59847680bee78af0c8251de532e7c39d8b',
+            //     v: 28,
+            // };
+            // expect(actual).to.deep.eq(expected);
+        });
+
+        it('can get an EIP712 signature with a private key', () => {
+            const actual = order.clone({ maker: keyMaker }).getSignatureWithKey(key, SignatureType.EIP712);
+            // const expected = {
+            //     signatureType: SignatureType.EIP712,
+            //     r: '0x824d70ae7cccea382ddd51f773f9745abb928dadbccebbd090ca371d7b8fb741',
+            //     s: '0x7557a009f7cfa207d19a8fd42950458340de718a7b35522051cde6f75ad42cba',
+            //     v: 27,
+            // };
+            // expect(actual).to.deep.eq(expected);
+        });
+    });
 });

yarn.lock

@@ -732,6 +732,26 @@
     js-sha3 "^0.7.0"
     uuid "^3.3.2"
 
+"@0x/contract-addresses@^6.16.0":
+  version "6.16.0"
+  resolved "https://registry.yarnpkg.com/@0x/contract-addresses/-/contract-addresses-6.16.0.tgz#dc8dc4c5319f7eee40e10ccb462a254b6eb03b14"
+  integrity sha512-Gsc/9EttCUtemiJR5/U1JPezxVUtlQ3pq6rPkc7YJL0isK0AwYIrQm82b6Z8wyg9bPMs9dkONc806nnUehY5pQ==
+
+"@0x/contract-wrappers@^13.20.4":
+  version "13.20.4"
+  resolved "https://registry.yarnpkg.com/@0x/contract-wrappers/-/contract-wrappers-13.20.4.tgz#e77e6bc4be2c0288fe6846cf7408a1694567e7e2"
+  integrity sha512-kbaYHjjgx1MN2+JRipmo6crl8p4lZpFyVFFp2ULtcEFBEzi0UIEMxo7SXCEguMe/yOY7NGGuLUMJ3Zd3IEjCxA==
+  dependencies:
+    "@0x/assert" "^3.0.34"
+    "@0x/base-contract" "^6.5.0"
+    "@0x/contract-addresses" "^6.16.0"
+    "@0x/json-schemas" "^6.4.4"
+    "@0x/types" "^3.3.6"
+    "@0x/utils" "^6.5.3"
+    "@0x/web3-wrapper" "^7.6.5"
+    ethereum-types "^3.7.0"
+    ethers "~4.0.4"
+
 "@0x/contracts-asset-proxy@^3.7.19":
   version "3.7.19"
   resolved "https://registry.yarnpkg.com/@0x/contracts-asset-proxy/-/contracts-asset-proxy-3.7.19.tgz#ee621a233f4d77b439c74c5b8d70db2e1ed001c4"
@@ -783,6 +803,14 @@
     "@0x/web3-wrapper" "^7.5.3"
     lodash "^4.17.11"
 
+"@0x/contracts-erc20@^3.3.32":
+  version "3.3.32"
+  resolved "https://registry.yarnpkg.com/@0x/contracts-erc20/-/contracts-erc20-3.3.32.tgz#e389594fe66722f4ad05ef9f5ebc581f35ea3fb2"
+  integrity sha512-SK2vAyXxDU4HsEB0rjC2/NQJadournmw7VksofY1GxbGYdHPcp2VHdGAbbncCGRW56DByS89RVphH9JIsy5Fhg==
+  dependencies:
+    "@0x/base-contract" "^6.5.0"
+    ethers "~4.0.4"
+
 "@0x/contracts-erc721@^3.1.37":
   version "3.1.37"
   resolved "https://registry.yarnpkg.com/@0x/contracts-erc721/-/contracts-erc721-3.1.37.tgz#d7d356737e3d2752cf49be385237fbf7d0c5745c"
@@ -867,6 +895,55 @@
     ethereum-types "^3.5.0"
     ethereumjs-util "^7.0.10"
 
+"@0x/contracts-test-utils@^5.4.23":
+  version "5.4.23"
+  resolved "https://registry.yarnpkg.com/@0x/contracts-test-utils/-/contracts-test-utils-5.4.23.tgz#515e120646cbba6644fa7c67b3259736b6c88601"
+  integrity sha512-cmLalK8MV3OEzbLq9Jyfc0a13//rR6bVQXtbYCNwb/ygqsP6HOCPQ24T6PLS6JyGb/nPCl2TRrrZ9TDgNb2uOA==
+  dependencies:
+    "@0x/assert" "^3.0.34"
+    "@0x/base-contract" "^6.5.0"
+    "@0x/contract-addresses" "^6.16.0"
+    "@0x/dev-utils" "^4.2.14"
+    "@0x/json-schemas" "^6.4.4"
+    "@0x/order-utils" "^10.4.28"
+    "@0x/sol-coverage" "^4.0.45"
+    "@0x/sol-profiler" "^4.1.35"
+    "@0x/sol-trace" "^3.0.45"
+    "@0x/subproviders" "^6.6.5"
+    "@0x/types" "^3.3.6"
+    "@0x/typescript-typings" "^5.3.1"
+    "@0x/utils" "^6.5.3"
+    "@0x/web3-wrapper" "^7.6.5"
+    "@types/bn.js" "^4.11.0"
+    "@types/js-combinatorics" "^0.5.29"
+    "@types/lodash" "4.14.104"
+    "@types/mocha" "^5.2.7"
+    "@types/node" "12.12.54"
+    bn.js "^4.11.8"
+    chai "^4.0.1"
+    chai-as-promised "^7.1.0"
+    chai-bignumber "^3.0.0"
+    decimal.js "^10.2.0"
+    dirty-chai "^2.0.1"
+    ethereum-types "^3.7.0"
+    ethereumjs-util "^7.0.10"
+    ethers "~4.0.4"
+    js-combinatorics "^0.5.3"
+    lodash "^4.17.11"
+    make-promises-safe "^1.1.0"
+    mocha "^6.2.0"
+
+"@0x/contracts-utils@^4.8.12":
+  version "4.8.12"
+  resolved "https://registry.yarnpkg.com/@0x/contracts-utils/-/contracts-utils-4.8.12.tgz#849c2f2f9368a4041c2e2d0c0c0c9716a13383ca"
+  integrity sha512-CWKBAFcs4dyD33McswwJEsoFwldJc0onLFQyLLpd2rAOlwoWxW6QuvGmtE5LOXOXsTy11kDJTO68dQylIN6Qlw==
+  dependencies:
+    "@0x/base-contract" "^6.5.0"
+    "@0x/typescript-typings" "^5.3.1"
+    "@0x/utils" "^6.5.3"
+    bn.js "^4.11.8"
+    ethereum-types "^3.7.0"
+
 "@0x/dev-utils@^4.2.14":
   version "4.2.14"
   resolved "https://registry.yarnpkg.com/@0x/dev-utils/-/dev-utils-4.2.14.tgz#2b15b3247ccaf111d8d42689907b603537b0a86c"
@@ -3796,6 +3873,7 @@ bigi@1.4.2, bigi@^1.1.0:
 bignumber.js@7.2.1, bignumber.js@^9.0.0, bignumber.js@^9.0.2, bignumber.js@~4.1.0, bignumber.js@~9.0.0, bignumber.js@~9.0.2:
   version "9.0.2"
   resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-9.0.2.tgz#71c6c6bed38de64e24a65ebe16cfcf23ae693673"
+  integrity sha512-GAcQvbpsM0pUb0zw1EI0KhQEZ+lRwR5fYaAp3vPOYuP7aDvGy6cVN6XHLauvF8SOga2y0dcLcjt3iQDTSEliyw==
 
 binary-extensions@^2.0.0:
   version "2.1.0"