Merge pull request #65 from nachomazzara/feat/optimize-gas-usage

feat: reduce gas cost by prevent reading again from storage
maticnetwork · Feb 24, 2021 · 962da54 · 962da54
2 parents 9277e74 + 938fb01
commit 962da54
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/contracts/root/RootChainManager/RootChainManager.sol b/contracts/root/RootChainManager/RootChainManager.sol
@@ -287,12 +287,13 @@ contract RootChainManager is
         address rootToken,
         bytes memory depositData
     ) private {
+        bytes32 tokenType = tokenToType[rootToken];
         require(
             rootToChildToken[rootToken] != address(0x0) &&
-               tokenToType[rootToken] != 0,
+               tokenType != 0,
             "RootChainManager: TOKEN_NOT_MAPPED"
         );
-        address predicateAddress = typeToPredicate[tokenToType[rootToken]];
+        address predicateAddress = typeToPredicate[tokenType];
         require(
             predicateAddress != address(0),
             "RootChainManager: INVALID_TOKEN_TYPE"
@@ -407,7 +408,7 @@ contract RootChainManager is
 
         ITokenPredicate(predicateAddress).exitTokens(
             _msgSender(),
-            childToRootToken[childToken],
+            rootToken,
             logRLP.toRlpBytes()
         );
     }