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-rw-r--r--contracts/exchange/contracts/src/MixinOrderbook.sol4
1 files changed, 4 insertions, 0 deletions
diff --git a/contracts/exchange/contracts/src/MixinOrderbook.sol b/contracts/exchange/contracts/src/MixinOrderbook.sol
index 271f28da2..a5e84352f 100644
--- a/contracts/exchange/contracts/src/MixinOrderbook.sol
+++ b/contracts/exchange/contracts/src/MixinOrderbook.sol
@@ -25,5 +25,9 @@ import "./mixins/MOrderbook.sol";
contract MixinOrderbook is
MOrderbook
{
+ // Mapping of orderHash => orderHash of the next order down the sorted linked list
+ mapping (bytes32 => bytes32) public next;
+ // Mapping of makerAssetData => takerAssetData => orderHash of the order with highest bid
+ mapping (bytes => mapping(bytes => bytes32)) public highestBid;
}