diff options
Diffstat (limited to 'contracts/extensions/contracts/OrderMatcher/libs/LibConstants.sol')
-rw-r--r-- | contracts/extensions/contracts/OrderMatcher/libs/LibConstants.sol | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/contracts/extensions/contracts/OrderMatcher/libs/LibConstants.sol b/contracts/extensions/contracts/OrderMatcher/libs/LibConstants.sol new file mode 100644 index 000000000..c1a86a9c7 --- /dev/null +++ b/contracts/extensions/contracts/OrderMatcher/libs/LibConstants.sol @@ -0,0 +1,56 @@ +/* + + 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 "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol"; + + +contract LibConstants { + + // bytes4(keccak256("transfer(address,uint256)")) + bytes4 constant internal ERC20_TRANSFER_SELECTOR = 0xa9059cbb; + // bytes4(keccak256("ERC20Token(address)")) + bytes4 constant internal ERC20_DATA_ID = 0xf47261b0; + // bytes4(keccak256("ERC721Token(address,uint256)")) + bytes4 constant internal ERC721_DATA_ID = 0x02571792; + + // solhint-disable var-name-mixedcase + IExchange internal EXCHANGE; + address internal ERC20_PROXY_ADDRESS; + address internal ERC721_PROXY_ADDRESS; + // solhint-enable var-name-mixedcase + + constructor (address _exchange) + public + { + EXCHANGE = IExchange(_exchange); + + ERC20_PROXY_ADDRESS = EXCHANGE.getAssetProxy(ERC20_DATA_ID); + require( + ERC20_PROXY_ADDRESS != address(0), + "UNREGISTERED_ASSET_PROXY" + ); + + ERC721_PROXY_ADDRESS = EXCHANGE.getAssetProxy(ERC721_DATA_ID); + require( + ERC721_PROXY_ADDRESS != address(0), + "UNREGISTERED_ASSET_PROXY" + ); + } +} |