7e8b56eef4
* feat: mStable * deploy and CHANGELOG * `@0x/contracts-utils`: Add more testnet addresses. * `@0x/contract-addresses`: Deply Mstable on testnets * `@0x/contract-addresses`: Remove testnet deployments of mStable :-) * move `erc20-bridge-sampler` into `asset-swapper` remove `DevUtils` dependency from sampler contract. * `@0x/asset-swapper`: Add ERC20BridgeSampler support for validating orders in maker fees denominated in non-maker assets. `@0x/asset-swapper`: Add tests for `NativeOrderSampler`. * `@0x/asset-swapper`: Return `0` sample if native order asset data is unsupported. * `@0x/asset-swapper`: Fix failing test. * feat: ExchangeProxy FQT fruit rollup (#2645) * feat: Optimize Bridges in ExchangeProxy * compile and most work * work around to trust the delecall contract * force allowances * Update Kyber/Eth2Dai bridges * Remove memory state where not required * cleanup * Combine Bridges into one adapter * mixins * refactor out ZeroExBridge * move out interface * comment out hacks * update migrations * remove simbot hacks * AdapterAddresses and mStable * Share constructor arg * fix migration * Remove whitespace * `@0x/contracts-zero-ex`: BridgeAdapter -- revert if bridge address is 0. * `@0x/contract-addresses`: Deploy FQT. Co-authored-by: Lawrence Forman <me@merklejerk.com> Co-authored-by: Lawrence Forman <lawrence@0xproject.com> * update ganache contract addresses * fix: asset-swapper empty batch call (#2669) * update ganache contract addresses * fix: asset-swapper prevent empty sampler batch call * add sampler to migrations * change migrations version * Use contract-wrappers and artifacts * remove extra data * remove deps, set sampler to NULL_ADDRESS * all the exports * noop sell rate too * update ganache contract addresses Co-authored-by: Lawrence Forman <me@merklejerk.com> Co-authored-by: Lawrence Forman <lawrence@0xproject.com>
57 lines
1.6 KiB
Solidity
57 lines
1.6 KiB
Solidity
/*
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Copyright 2019 ZeroEx Intl.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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pragma solidity ^0.5.9;
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pragma experimental ABIEncoderV2;
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import "@0x/contracts-erc20/contracts/src/LibERC20Token.sol";
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contract SamplerUtils {
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/// @dev Overridable way to get token decimals.
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/// @param tokenAddress Address of the token.
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/// @return decimals The decimal places for the token.
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function _getTokenDecimals(address tokenAddress)
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internal
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view
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returns (uint8 decimals)
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{
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return LibERC20Token.decimals(tokenAddress);
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}
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function _toSingleValueArray(uint256 v)
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internal
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pure
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returns (uint256[] memory arr)
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{
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arr = new uint256[](1);
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arr[0] = v;
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}
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/// @dev Assert that the tokens in a trade pair are valid.
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/// @param makerToken Address of the maker token.
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/// @param takerToken Address of the taker token.
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function _assertValidPair(address makerToken, address takerToken)
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internal
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pure
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{
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require(makerToken != takerToken, "ERC20BridgeSampler/INVALID_TOKEN_PAIR");
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}
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}
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