renamed op code RANDOM to PREVRANDAO (#3492)

Signed-off-by: Daniel Lehrner <daniel.lehrner@consensys.net>

ethereum/core/src/test/java/org/hyperledger/besu/ethereum/vm/operations/PrevRanDaoOperationTest.java

@@ -24,18 +24,18 @@ import org.hyperledger.besu.evm.frame.BlockValues;
 import org.hyperledger.besu.evm.frame.MessageFrame;
 import org.hyperledger.besu.evm.gascalculator.LondonGasCalculator;
 import org.hyperledger.besu.evm.operation.Operation;
-import org.hyperledger.besu.evm.operation.RandomOperation;
+import org.hyperledger.besu.evm.operation.PrevRanDaoOperation;
 
 import org.apache.tuweni.bytes.Bytes;
 import org.apache.tuweni.bytes.Bytes32;
 import org.apache.tuweni.units.bigints.UInt256;
 import org.junit.Test;
 
-public class RandomOperationTest {
+public class PrevRanDaoOperationTest {
 
   @Test
   public void pushesRandWhenDifficultyZero() {
-    RandomOperation op = new RandomOperation(new LondonGasCalculator());
+    PrevRanDaoOperation op = new PrevRanDaoOperation(new LondonGasCalculator());
     MessageFrame messageFrame = mock(MessageFrame.class);
     BlockValues blockHeader = mock(BlockValues.class);
     Bytes32 rand = Bytes32.fromHexString("0xb0b0face");
@@ -50,7 +50,7 @@ public class RandomOperationTest {
 
   @Test
   public void pushesDifficultyWhenPresent() {
-    RandomOperation op = new RandomOperation(new LondonGasCalculator());
+    PrevRanDaoOperation op = new PrevRanDaoOperation(new LondonGasCalculator());
     MessageFrame messageFrame = mock(MessageFrame.class);
     BlockValues blockHeader = mock(BlockValues.class);
     Bytes32 rand = Bytes32.fromHexString("0xb0b0face");

evm/src/main/java/org/hyperledger/besu/evm/MainnetEVMs.java

@@ -80,8 +80,8 @@ import org.hyperledger.besu.evm.operation.OrOperation;
 import org.hyperledger.besu.evm.operation.OriginOperation;
 import org.hyperledger.besu.evm.operation.PCOperation;
 import org.hyperledger.besu.evm.operation.PopOperation;
+import org.hyperledger.besu.evm.operation.PrevRanDaoOperation;
 import org.hyperledger.besu.evm.operation.PushOperation;
-import org.hyperledger.besu.evm.operation.RandomOperation;
 import org.hyperledger.besu.evm.operation.ReturnDataCopyOperation;
 import org.hyperledger.besu.evm.operation.ReturnDataSizeOperation;
 import org.hyperledger.besu.evm.operation.ReturnOperation;
@@ -393,6 +393,6 @@ public abstract class MainnetEVMs {
       final GasCalculator gasCalculator,
       final BigInteger chainID) {
     registerLondonOperations(registry, gasCalculator, chainID);
-    registry.put(new RandomOperation(gasCalculator));
+    registry.put(new PrevRanDaoOperation(gasCalculator));
   }
 }

evm/src/main/java/org/hyperledger/besu/evm/operation/PrevRanDaoOperation.java

@@ -20,10 +20,10 @@ import org.hyperledger.besu.evm.gascalculator.GasCalculator;
 
 import org.apache.tuweni.units.bigints.UInt256;
 
-public class RandomOperation extends AbstractFixedCostOperation {
+public class PrevRanDaoOperation extends AbstractFixedCostOperation {
 
-  public RandomOperation(final GasCalculator gasCalculator) {
-    super(0x44, "RANDOM", 0, 1, 1, gasCalculator, gasCalculator.getBaseTierGasCost());
+  public PrevRanDaoOperation(final GasCalculator gasCalculator) {
+    super(0x44, "PREVRANDAO", 0, 1, 1, gasCalculator, gasCalculator.getBaseTierGasCost());
   }
 
   @Override