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-rw-r--r--packages/contracts/contracts/extensions/Forwarder/MixinWeth.sol113
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diff --git a/packages/contracts/contracts/extensions/Forwarder/MixinWeth.sol b/packages/contracts/contracts/extensions/Forwarder/MixinWeth.sol
deleted file mode 100644
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--- a/packages/contracts/contracts/extensions/Forwarder/MixinWeth.sol
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@@ -1,113 +0,0 @@
-/*
-
- 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;
-
-import "../../protocol/Exchange/libs/LibMath.sol";
-import "./libs/LibConstants.sol";
-import "./mixins/MWeth.sol";
-
-
-contract MixinWeth is
- LibMath,
- LibConstants,
- MWeth
-{
- /// @dev Default payabale function, this allows us to withdraw WETH
- function ()
- public
- payable
- {
- require(
- msg.sender == address(ETHER_TOKEN),
- "DEFAULT_FUNCTION_WETH_CONTRACT_ONLY"
- );
- }
-
- /// @dev Converts message call's ETH value into WETH.
- function convertEthToWeth()
- internal
- {
- require(
- msg.value > 0,
- "INVALID_MSG_VALUE"
- );
- ETHER_TOKEN.deposit.value(msg.value)();
- }
-
- /// @dev Transfers feePercentage of WETH spent on primary orders to feeRecipient.
- /// Refunds any excess ETH to msg.sender.
- /// @param wethSoldExcludingFeeOrders Amount of WETH sold when filling primary orders.
- /// @param wethSoldForZrx Amount of WETH sold when purchasing ZRX required for primary order fees.
- /// @param feePercentage Percentage of WETH sold that will payed as fee to forwarding contract feeRecipient.
- /// @param feeRecipient Address that will receive ETH when orders are filled.
- function transferEthFeeAndRefund(
- uint256 wethSoldExcludingFeeOrders,
- uint256 wethSoldForZrx,
- uint256 feePercentage,
- address feeRecipient
- )
- internal
- {
- // Ensure feePercentage is less than 5%.
- require(
- feePercentage <= MAX_FEE_PERCENTAGE,
- "FEE_PERCENTAGE_TOO_LARGE"
- );
-
- // Ensure that no extra WETH owned by this contract has been sold.
- uint256 wethSold = safeAdd(wethSoldExcludingFeeOrders, wethSoldForZrx);
- require(
- wethSold <= msg.value,
- "OVERSOLD_WETH"
- );
-
- // Calculate amount of WETH that hasn't been sold.
- uint256 wethRemaining = safeSub(msg.value, wethSold);
-
- // Calculate ETH fee to pay to feeRecipient.
- uint256 ethFee = getPartialAmountFloor(
- feePercentage,
- PERCENTAGE_DENOMINATOR,
- wethSoldExcludingFeeOrders
- );
-
- // Ensure fee is less than amount of WETH remaining.
- require(
- ethFee <= wethRemaining,
- "INSUFFICIENT_ETH_REMAINING"
- );
-
- // Do nothing if no WETH remaining
- if (wethRemaining > 0) {
- // Convert remaining WETH to ETH
- ETHER_TOKEN.withdraw(wethRemaining);
-
- // Pay ETH to feeRecipient
- if (ethFee > 0) {
- feeRecipient.transfer(ethFee);
- }
-
- // Refund remaining ETH to msg.sender.
- uint256 ethRefund = safeSub(wethRemaining, ethFee);
- if (ethRefund > 0) {
- msg.sender.transfer(ethRefund);
- }
- }
- }
-}