Fix style

(cherry picked from commit 6b2f677)

Author: Pavel Marek

com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/data/NativeDataAccess.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2021, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it

com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/data/RStringVecNativeData.java

@@ -46,11 +46,11 @@ public class RStringVecNativeData implements TruffleObject, ShareableVectorData
 
     /**
      * After nativized, the data array degenerates to a reference holder, which prevents the objects
-     * from being GC'ed. This means that if someone changes the order of the CHARSXP elements on the native
-     * side, this modification is not reflected in this reference holder array.
+     * from being GC'ed. This means that if someone changes the order of the CHARSXP elements on the
+     * native side, this modification is not reflected in this reference holder array.
      *
-     * If the native code copies data of one string vector to another without
-     * using the proper API, we are doomed.
+     * If the native code copies data of one string vector to another without using the proper API,
+     * we are doomed.
      */
     private final CharSXPWrapper[] data;
 

com.oracle.truffle.r.runtime/src/com/oracle/truffle/r/runtime/data/VectorDataLibrary.java

@@ -158,7 +158,7 @@ public boolean isWriteable(Object data) {
      * 
      * @see #materialize(Object)
      */
-    public Object materializeCharSXPStorage(Object data) throws UnsupportedMessageException {
+    public Object materializeCharSXPStorage(@SuppressWarnings("unused") Object data) throws UnsupportedMessageException {
         throw UnsupportedMessageException.create();
     }
 
@@ -1059,14 +1059,17 @@ public void setString(Object receiver, RandomAccessWriteIterator it, int index,
         throw notWriteableError(receiver, "setString");
     }
 
+    @SuppressWarnings("unused")
     public void setCharSXPAt(Object receiver, int index, CharSXPWrapper value) {
         throw notWriteableError(receiver, "setCharSXPAt");
     }
 
+    @SuppressWarnings("unused")
     public void setNextCharSXP(Object receiver, SeqWriteIterator it, CharSXPWrapper value) {
         throw notWriteableError(receiver, "setNextCharSXP");
     }
 
+    @SuppressWarnings("unused")
     public void setCharSXP(Object receiver, RandomAccessWriteIterator it, int index, CharSXPWrapper value) {
         throw notWriteableError(receiver, "setCharSXP");
     }