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authorAmir Bandeali <abandeali1@gmail.com>2018-07-20 23:01:18 +0800
committerAmir Bandeali <abandeali1@gmail.com>2018-07-23 23:02:51 +0800
commite20f3a0f97d3d2029aea24e761d4689e0382756f (patch)
tree4084f55e8d9cfc6e276efb1de274294da17f1eb4 /packages/contracts/src
parentc5029e61e3bd147d8b177b60da43e76a32e57c6f (diff)
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Remove redundant external call by reimplementing fillOrderNoThrow
Diffstat (limited to 'packages/contracts/src')
-rw-r--r--packages/contracts/src/2.0.0/forwarder/Forwarder.sol2
-rw-r--r--packages/contracts/src/2.0.0/forwarder/MixinExchangeWrapper.sol250
-rw-r--r--packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol134
-rw-r--r--packages/contracts/src/2.0.0/forwarder/mixins/MExchangeWrapper.sol87
-rw-r--r--packages/contracts/src/2.0.0/forwarder/mixins/MForwarderCore.sol46
-rw-r--r--packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol2
6 files changed, 355 insertions, 166 deletions
diff --git a/packages/contracts/src/2.0.0/forwarder/Forwarder.sol b/packages/contracts/src/2.0.0/forwarder/Forwarder.sol
index 4405d5e46..d3721884c 100644
--- a/packages/contracts/src/2.0.0/forwarder/Forwarder.sol
+++ b/packages/contracts/src/2.0.0/forwarder/Forwarder.sol
@@ -23,6 +23,7 @@ import "./MixinWeth.sol";
import "./MixinForwarderCore.sol";
import "./MixinConstants.sol";
import "./MixinAssets.sol";
+import "./MixinExchangeWrapper.sol";
// solhint-disable no-empty-blocks
@@ -30,6 +31,7 @@ contract Forwarder is
MixinConstants,
MixinWeth,
MixinAssets,
+ MixinExchangeWrapper,
MixinForwarderCore
{
diff --git a/packages/contracts/src/2.0.0/forwarder/MixinExchangeWrapper.sol b/packages/contracts/src/2.0.0/forwarder/MixinExchangeWrapper.sol
new file mode 100644
index 000000000..5c0a606e6
--- /dev/null
+++ b/packages/contracts/src/2.0.0/forwarder/MixinExchangeWrapper.sol
@@ -0,0 +1,250 @@
+/*
+
+ Copyright 2018 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 0.4.24;
+pragma experimental ABIEncoderV2;
+
+import "./mixins/MConstants.sol";
+import "./mixins/MExchangeWrapper.sol";
+import "../protocol/Exchange/libs/LibAbiEncoder.sol";
+import "../protocol/Exchange/libs/LibOrder.sol";
+import "../protocol/Exchange/libs/LibFillResults.sol";
+import "../protocol/Exchange/libs/LibMath.sol";
+
+
+contract MixinExchangeWrapper is
+ LibAbiEncoder,
+ LibFillResults,
+ LibMath,
+ MConstants,
+ MExchangeWrapper
+{
+
+ /// @dev Fills the input order.
+ /// Returns false if the transaction would otherwise revert.
+ /// @param order Order struct containing order specifications.
+ /// @param takerAssetFillAmount Desired amount of takerAsset to sell.
+ /// @param signature Proof that order has been created by maker.
+ /// @return Amounts filled and fees paid by maker and taker.
+ function fillOrderNoThrow(
+ LibOrder.Order memory order,
+ uint256 takerAssetFillAmount,
+ bytes memory signature
+ )
+ internal
+ returns (FillResults memory fillResults)
+ {
+ // ABI encode calldata for `fillOrder`
+ bytes memory fillOrderCalldata = abiEncodeFillOrder(
+ order,
+ takerAssetFillAmount,
+ signature
+ );
+
+ address exchange = address(EXCHANGE);
+
+ // Call `fillOrder` and handle any exceptions gracefully
+ assembly {
+ let success := call(
+ gas, // forward all gas, TODO: look into gas consumption of assert/throw
+ exchange, // call address of Exchange contract
+ 0, // transfer 0 wei
+ add(fillOrderCalldata, 32), // pointer to start of input (skip array length in first 32 bytes)
+ mload(fillOrderCalldata), // length of input
+ fillOrderCalldata, // write output over input
+ 128 // output size is 128 bytes
+ )
+ switch success
+ case 0 {
+ mstore(fillResults, 0)
+ mstore(add(fillResults, 32), 0)
+ mstore(add(fillResults, 64), 0)
+ mstore(add(fillResults, 96), 0)
+ }
+ case 1 {
+ mstore(fillResults, mload(fillOrderCalldata))
+ mstore(add(fillResults, 32), mload(add(fillOrderCalldata, 32)))
+ mstore(add(fillResults, 64), mload(add(fillOrderCalldata, 64)))
+ mstore(add(fillResults, 96), mload(add(fillOrderCalldata, 96)))
+ }
+ }
+ return fillResults;
+ }
+
+ /// @dev Synchronously executes multiple calls of fillOrder until total amount of WETH has been sold by taker.
+ /// Returns false if the transaction would otherwise revert.
+ /// @param orders Array of order specifications.
+ /// @param wethSellAmount Desired amount of WETH to sell.
+ /// @param signatures Proofs that orders have been signed by makers.
+ /// @return Amounts filled and fees paid by makers and taker.
+ function marketSellWeth(
+ LibOrder.Order[] memory orders,
+ uint256 wethSellAmount,
+ bytes[] memory signatures
+ )
+ internal
+ returns (FillResults memory totalFillResults)
+ {
+ bytes memory wethAssetData = WETH_ASSET_DATA;
+
+ uint256 ordersLength = orders.length;
+ for (uint256 i = 0; i < ordersLength; i++) {
+
+ // We assume that asset being sold by taker is WETH for each order.
+ orders[i].takerAssetData = wethAssetData;
+
+ // Calculate the remaining amount of WETH to sell
+ uint256 remainingTakerAssetFillAmount = safeSub(wethSellAmount, totalFillResults.takerAssetFilledAmount);
+
+ // Attempt to sell the remaining amount of WETH
+ FillResults memory singleFillResults = fillOrderNoThrow(
+ orders[i],
+ remainingTakerAssetFillAmount,
+ signatures[i]
+ );
+
+ // Update amounts filled and fees paid by maker and taker
+ addFillResults(totalFillResults, singleFillResults);
+
+ // Stop execution if the entire amount of takerAsset has been sold
+ if (totalFillResults.takerAssetFilledAmount == wethSellAmount) {
+ break;
+ }
+ }
+ return totalFillResults;
+ }
+
+ /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker.
+ /// Returns false if the transaction would otherwise revert.
+ /// The asset being sold by taker must always be WETH.
+ /// @param orders Array of order specifications.
+ /// @param makerAssetFillAmount Desired amount of makerAsset to buy.
+ /// @param signatures Proofs that orders have been signed by makers.
+ /// @return Amounts filled and fees paid by makers and taker.
+ function marketBuyWithWeth(
+ LibOrder.Order[] memory orders,
+ uint256 makerAssetFillAmount,
+ bytes[] memory signatures
+ )
+ internal
+ returns (FillResults memory totalFillResults)
+ {
+ bytes memory makerAssetData = orders[0].makerAssetData;
+ bytes memory wethAssetData = WETH_ASSET_DATA;
+
+ uint256 ordersLength = orders.length;
+ for (uint256 i = 0; i < ordersLength; i++) {
+
+ // We assume that asset being bought by taker is the same for each order.
+ // We assume that asset being sold by taker is WETH for each order.
+ orders[i].makerAssetData = makerAssetData;
+ orders[i].takerAssetData = wethAssetData;
+
+ // Calculate the remaining amount of makerAsset to buy
+ uint256 remainingMakerAssetFillAmount = safeSub(makerAssetFillAmount, totalFillResults.makerAssetFilledAmount);
+
+ // Convert the remaining amount of makerAsset to buy into remaining amount
+ // of takerAsset to sell, assuming entire amount can be sold in the current order
+ uint256 remainingTakerAssetFillAmount = getPartialAmount(
+ orders[i].takerAssetAmount,
+ orders[i].makerAssetAmount,
+ remainingMakerAssetFillAmount
+ );
+
+ // Attempt to sell the remaining amount of takerAsset
+ FillResults memory singleFillResults = fillOrderNoThrow(
+ orders[i],
+ remainingTakerAssetFillAmount,
+ signatures[i]
+ );
+
+ // Update amounts filled and fees paid by maker and taker
+ addFillResults(totalFillResults, singleFillResults);
+
+ // Stop execution if the entire amount of makerAsset has been bought
+ if (totalFillResults.makerAssetFilledAmount == makerAssetFillAmount) {
+ break;
+ }
+ }
+ return totalFillResults;
+ }
+
+ /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee
+ /// that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues).
+ /// It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX
+ /// as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases.
+ /// The asset being sold by taker must always be WETH.
+ /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset.
+ /// @param zrxBuyAmount Desired amount of ZRX to buy.
+ /// @param signatures Proofs that orders have been created by makers.
+ /// @return totalFillResults Amounts filled and fees paid by maker and taker.
+ function marketBuyZrxWithWeth(
+ LibOrder.Order[] memory orders,
+ uint256 zrxBuyAmount,
+ bytes[] memory signatures
+ )
+ internal
+ returns (FillResults memory totalFillResults)
+ {
+ // Do nothing if zrxBuyAmount == 0
+ if (zrxBuyAmount == 0) {
+ return totalFillResults;
+ }
+
+ bytes memory zrxAssetData = ZRX_ASSET_DATA;
+ bytes memory wethAssetData = WETH_ASSET_DATA;
+ uint256 zrxPurchased = 0;
+
+ uint256 ordersLength = orders.length;
+ for (uint256 i = 0; i < ordersLength; i++) {
+
+ // All of these are ZRX/WETH, so we can drop the respective assetData from calldata.
+ orders[i].makerAssetData = zrxAssetData;
+ orders[i].takerAssetData = wethAssetData;
+
+ // Calculate the remaining amount of ZRX to buy.
+ uint256 remainingZrxBuyAmount = safeSub(zrxBuyAmount, zrxPurchased);
+
+ // Convert the remaining amount of ZRX to buy into remaining amount
+ // of WETH to sell, assuming entire amount can be sold in the current order.
+ uint256 remainingWethSellAmount = getPartialAmount(
+ orders[i].takerAssetAmount,
+ safeSub(orders[i].makerAssetAmount, orders[i].takerFee), // our exchange rate after fees
+ remainingZrxBuyAmount
+ );
+
+ // Attempt to sell the remaining amount of WETH.
+ FillResults memory singleFillResult = fillOrderNoThrow(
+ orders[i],
+ safeAdd(remainingWethSellAmount, 1),
+ signatures[i]
+ );
+
+ // Update amounts filled and fees paid by maker and taker.
+ addFillResults(totalFillResults, singleFillResult);
+ zrxPurchased = safeSub(totalFillResults.makerAssetFilledAmount, totalFillResults.takerFeePaid);
+
+ // Stop execution if the entire amount of ZRX has been bought.
+ if (zrxPurchased >= zrxBuyAmount) {
+ break;
+ }
+ }
+
+ return totalFillResults;
+ }
+} \ No newline at end of file
diff --git a/packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol b/packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol
index 2ec2e2638..e9acef7a2 100644
--- a/packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol
+++ b/packages/contracts/src/2.0.0/forwarder/MixinForwarderCore.sol
@@ -22,6 +22,7 @@ pragma experimental ABIEncoderV2;
import "./mixins/MWeth.sol";
import "./mixins/MAssets.sol";
import "./mixins/MConstants.sol";
+import "./mixins/MExchangeWrapper.sol";
import "./mixins/MForwarderCore.sol";
import "../utils/LibBytes/LibBytes.sol";
import "../protocol/Exchange/libs/LibOrder.sol";
@@ -35,6 +36,7 @@ contract MixinForwarderCore is
MConstants,
MWeth,
MAssets,
+ MExchangeWrapper,
MForwarderCore
{
@@ -115,7 +117,7 @@ contract MixinForwarderCore is
);
// Buy back all ZRX spent on fees.
zrxBuyAmount = orderFillResults.takerFeePaid;
- feeOrderFillResults = marketBuyZrx(
+ feeOrderFillResults = marketBuyZrxWithWeth(
feeOrders,
zrxBuyAmount,
feeSignatures
@@ -178,7 +180,7 @@ contract MixinForwarderCore is
if (orders[0].makerAssetData.equals(ZRX_ASSET_DATA)) {
// If the makerAsset is ZRX, it is not necessary to pay fees out of this
// contracts's ZRX balance because fees are factored into the price of the order.
- orderFillResults = marketBuyZrx(
+ orderFillResults = marketBuyZrxWithWeth(
orders,
makerAssetFillAmount,
signatures
@@ -188,14 +190,14 @@ contract MixinForwarderCore is
} else {
// Attemp to purchase desired amount of makerAsset.
// ZRX fees are payed with this contract's balance.
- orderFillResults = marketBuyAsset(
+ orderFillResults = marketBuyWithWeth(
orders,
makerAssetFillAmount,
signatures
);
// Buy back all ZRX spent on fees.
zrxBuyAmount = orderFillResults.takerFeePaid;
- feeOrderFillResults = marketBuyZrx(
+ feeOrderFillResults = marketBuyZrxWithWeth(
feeOrders,
zrxBuyAmount,
feeSignatures
@@ -223,130 +225,6 @@ contract MixinForwarderCore is
transferPurchasedAssetToSender(orders[0].makerAssetData, makerAssetAmountPurchased);
}
- /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset.
- /// @param wethSellAmount Desired amount of WETH to sell.
- /// @param signatures Proofs that orders have been created by makers.
- /// @return Amounts filled and fees paid by maker and taker.
- function marketSellWeth(
- LibOrder.Order[] memory orders,
- uint256 wethSellAmount,
- bytes[] memory signatures
- )
- internal
- returns (FillResults memory fillResults)
- {
- // `marketSellOrders` uses the first order's takerAssetData for all passed in orders.
- orders[0].takerAssetData = WETH_ASSET_DATA;
-
- // All orders are required to have the same makerAssetData. We save on gas by reusing the makerAssetData of the first order.
- uint256 ordersLength = orders.length;
- for (uint256 i = 0; i < ordersLength; i++) {
- orders[i].makerAssetData = orders[0].makerAssetData;
- }
-
- // Sell WETH until entire amount has been sold or all orders have been filled.
- fillResults = EXCHANGE.marketSellOrdersNoThrow(
- orders,
- wethSellAmount,
- signatures
- );
-
- return fillResults;
- }
-
- /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset.
- /// @param makerAssetFillAmount Desired amount of makerAsset to buy.
- /// @param signatures Proofs that orders have been created by makers.
- /// @return Amounts filled and fees paid by maker and taker.
- function marketBuyAsset(
- LibOrder.Order[] memory orders,
- uint256 makerAssetFillAmount,
- bytes[] memory signatures
- )
- internal
- returns (FillResults memory fillResults)
- {
- bytes memory wethAssetData = WETH_ASSET_DATA;
-
- // All orders are required to have WETH as takerAssetData. We save on gas by populating the orders here, rather than passing in any extra calldata.
- uint256 ordersLength = orders.length;
- for (uint256 i = 0; i < ordersLength; i++) {
- orders[i].takerAssetData = wethAssetData;
- }
-
- // Purchase makerAsset until entire amount has been bought or all orders have been filled.
- fillResults = EXCHANGE.marketBuyOrdersNoThrow(
- orders,
- makerAssetFillAmount,
- signatures
- );
-
- return fillResults;
- }
-
- /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee
- /// that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues).
- /// It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX
- /// as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases.
- /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset.
- /// @param zrxBuyAmount Desired amount of ZRX to buy.
- /// @param signatures Proofs that orders have been created by makers.
- /// @return totalFillResults Amounts filled and fees paid by maker and taker.
- function marketBuyZrx(
- LibOrder.Order[] memory orders,
- uint256 zrxBuyAmount,
- bytes[] memory signatures
- )
- internal
- returns (FillResults memory totalFillResults)
- {
- // Do nothing if zrxBuyAmount == 0
- if (zrxBuyAmount == 0) {
- return totalFillResults;
- }
-
- bytes memory zrxAssetData = ZRX_ASSET_DATA;
- bytes memory wethAssetData = WETH_ASSET_DATA;
- uint256 zrxPurchased = 0;
-
- uint256 ordersLength = orders.length;
- for (uint256 i = 0; i < ordersLength; i++) {
-
- // All of these are ZRX/WETH, so we can drop the respective assetData from calldata.
- orders[i].makerAssetData = zrxAssetData;
- orders[i].takerAssetData = wethAssetData;
-
- // Calculate the remaining amount of ZRX to buy.
- uint256 remainingZrxBuyAmount = safeSub(zrxBuyAmount, zrxPurchased);
-
- // Convert the remaining amount of ZRX to buy into remaining amount
- // of WETH to sell, assuming entire amount can be sold in the current order.
- uint256 remainingWethSellAmount = getPartialAmount(
- orders[i].takerAssetAmount,
- safeSub(orders[i].makerAssetAmount, orders[i].takerFee), // our exchange rate after fees
- remainingZrxBuyAmount
- );
-
- // Attempt to sell the remaining amount of WETH.
- FillResults memory singleFillResult = EXCHANGE.fillOrderNoThrow(
- orders[i],
- safeAdd(remainingWethSellAmount, 1),
- signatures[i]
- );
-
- // Update amounts filled and fees paid by maker and taker.
- addFillResults(totalFillResults, singleFillResult);
- zrxPurchased = safeSub(totalFillResults.makerAssetFilledAmount, totalFillResults.takerFeePaid);
-
- // Stop execution if the entire amount of ZRX has been bought.
- if (zrxPurchased >= zrxBuyAmount) {
- break;
- }
- }
-
- return totalFillResults;
- }
-
/// @dev Ensures that all ZRX fees have been repurchased and no extra WETH owned by this contract has been sold.
/// @param orderFillResults Amounts filled and fees paid for primary orders.
/// @param feeOrderFillResults Amounts filled and fees paid for fee orders.
diff --git a/packages/contracts/src/2.0.0/forwarder/mixins/MExchangeWrapper.sol b/packages/contracts/src/2.0.0/forwarder/mixins/MExchangeWrapper.sol
new file mode 100644
index 000000000..0fa90fd82
--- /dev/null
+++ b/packages/contracts/src/2.0.0/forwarder/mixins/MExchangeWrapper.sol
@@ -0,0 +1,87 @@
+/*
+
+ Copyright 2018 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 0.4.24;
+pragma experimental ABIEncoderV2;
+
+import "../../protocol/Exchange/libs/LibOrder.sol";
+import "../../protocol/Exchange/libs/LibFillResults.sol";
+
+
+contract MExchangeWrapper {
+
+ /// @dev Fills the input order.
+ /// Returns false if the transaction would otherwise revert.
+ /// @param order Order struct containing order specifications.
+ /// @param takerAssetFillAmount Desired amount of takerAsset to sell.
+ /// @param signature Proof that order has been created by maker.
+ /// @return Amounts filled and fees paid by maker and taker.
+ function fillOrderNoThrow(
+ LibOrder.Order memory order,
+ uint256 takerAssetFillAmount,
+ bytes memory signature
+ )
+ internal
+ returns (LibFillResults.FillResults memory fillResults);
+
+ /// @dev Synchronously executes multiple calls of fillOrder until total amount of WETH has been sold by taker.
+ /// Returns false if the transaction would otherwise revert.
+ /// @param orders Array of order specifications.
+ /// @param wethSellAmount Desired amount of WETH to sell.
+ /// @param signatures Proofs that orders have been signed by makers.
+ /// @return Amounts filled and fees paid by makers and taker.
+ function marketSellWeth(
+ LibOrder.Order[] memory orders,
+ uint256 wethSellAmount,
+ bytes[] memory signatures
+ )
+ internal
+ returns (LibFillResults.FillResults memory totalFillResults);
+
+ /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker.
+ /// Returns false if the transaction would otherwise revert.
+ /// The asset being sold by taker must always be WETH.
+ /// @param orders Array of order specifications.
+ /// @param makerAssetFillAmount Desired amount of makerAsset to buy.
+ /// @param signatures Proofs that orders have been signed by makers.
+ /// @return Amounts filled and fees paid by makers and taker.
+ function marketBuyWithWeth(
+ LibOrder.Order[] memory orders,
+ uint256 makerAssetFillAmount,
+ bytes[] memory signatures
+ )
+ internal
+ returns (LibFillResults.FillResults memory totalFillResults);
+
+ /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee
+ /// that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues).
+ /// It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX
+ /// as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases.
+ /// The asset being sold by taker must always be WETH.
+ /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset.
+ /// @param zrxBuyAmount Desired amount of ZRX to buy.
+ /// @param signatures Proofs that orders have been created by makers.
+ /// @return totalFillResults Amounts filled and fees paid by maker and taker.
+ function marketBuyZrxWithWeth(
+ LibOrder.Order[] memory orders,
+ uint256 zrxBuyAmount,
+ bytes[] memory signatures
+ )
+ internal
+ returns (LibFillResults.FillResults memory totalFillResults);
+} \ No newline at end of file
diff --git a/packages/contracts/src/2.0.0/forwarder/mixins/MForwarderCore.sol b/packages/contracts/src/2.0.0/forwarder/mixins/MForwarderCore.sol
index 9dee15481..0f5cd9c66 100644
--- a/packages/contracts/src/2.0.0/forwarder/mixins/MForwarderCore.sol
+++ b/packages/contracts/src/2.0.0/forwarder/mixins/MForwarderCore.sol
@@ -28,43 +28,15 @@ contract MForwarderCore is
IForwarderCore
{
- /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset.
- /// @param wethSellAmount Desired amount of WETH to sell.
- /// @param signatures Proofs that orders have been created by makers.
- /// @return Amounts filled and fees paid by maker and taker.
- function marketSellWeth(
- LibOrder.Order[] memory orders,
- uint256 wethSellAmount,
- bytes[] memory signatures
+ /// @dev Ensures that all ZRX fees have been repurchased and no extra WETH owned by this contract has been sold.
+ /// @param orderFillResults Amounts filled and fees paid for primary orders.
+ /// @param feeOrderFillResults Amounts filled and fees paid for fee orders.
+ /// @param zrxBuyAmount The amount of ZRX that needed to be repurchased after filling primary orders.
+ function assertValidFillResults(
+ LibFillResults.FillResults memory orderFillResults,
+ LibFillResults.FillResults memory feeOrderFillResults,
+ uint256 zrxBuyAmount
)
internal
- returns (LibFillResults.FillResults memory fillResults);
-
- /// @param orders Array of order specifications used containing desired makerAsset and WETH as takerAsset.
- /// @param makerAssetFillAmount Desired amount of makerAsset to buy.
- /// @param signatures Proofs that orders have been created by makers.
- /// @return Amounts filled and fees paid by maker and taker.
- function marketBuyAsset(
- LibOrder.Order[] memory orders,
- uint256 makerAssetFillAmount,
- bytes[] memory signatures
- )
- internal
- returns (LibFillResults.FillResults memory fillResults);
-
- /// @dev Buys zrxBuyAmount of ZRX fee tokens, taking into account ZRX fees for each order. This will guarantee
- /// that at least zrxBuyAmount of ZRX is purchased (sometimes slightly over due to rounding issues).
- /// It is possible that a request to buy 200 ZRX will require purchasing 202 ZRX
- /// as 2 ZRX is required to purchase the 200 ZRX fee tokens. This guarantees at least 200 ZRX for future purchases.
- /// @param orders Array of order specifications containing ZRX as makerAsset and WETH as takerAsset.
- /// @param zrxBuyAmount Desired amount of ZRX to buy.
- /// @param signatures Proofs that orders have been created by makers.
- /// @return totalFillResults Amounts filled and fees paid by maker and taker.
- function marketBuyZrx(
- LibOrder.Order[] memory orders,
- uint256 zrxBuyAmount,
- bytes[] memory signatures
- )
- internal
- returns (LibFillResults.FillResults memory totalFillResults);
+ view;
}
diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol
index adb56799a..a0882b108 100644
--- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol
+++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinWrapperFunctions.sol
@@ -57,7 +57,7 @@ contract MixinWrapperFunctions is
return fillResults;
}
- /// @dev Fills an order with specified parameters and ECDSA signature.
+ /// @dev Fills the input order.
/// Returns false if the transaction would otherwise revert.
/// @param order Order struct containing order specifications.
/// @param takerAssetFillAmount Desired amount of takerAsset to sell.