Fixed style issues

Author: otethal

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/random/PRandom.java

@@ -142,9 +142,10 @@ int getIndex() {
         return index;
     }
 
-    void restore(int[] state, int index) {
-        assert state.length == N;
-        this.state = state;
-        this.index = index;
+    void restore(int[] new_state, int new_index) {
+        assert new_state.length == N;
+        assert new_index >= 0 && new_index <= N;
+        state = new_state;
+        index = new_index;
     }
 }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/random/RandomBuiltins.java

@@ -187,6 +187,7 @@ PNone setstate(PRandom random, PTuple tuple,
         }
 
         @Fallback
+        @SuppressWarnings("unused")
         Object setstate(Object random, Object state) {
             throw raise(TypeError, ErrorMessages.STATE_VECTOR_MUST_BE_A_TUPLE);
         }
@@ -202,7 +203,7 @@ PTuple getstate(PRandom random) {
         }
 
         @TruffleBoundary
-        private Object[] encodeState(PRandom random) {
+        private static Object[] encodeState(PRandom random) {
             int[] state = random.getState();
             Object[] encodedState = new Object[PRandom.N + 1];
             for (int i = 0; i < PRandom.N; ++i) {
@@ -252,7 +253,7 @@ int genInt(PRandom random, int k) {
 
         @Specialization(guards = "k == 32")
         @TruffleBoundary
-        long gen32Bits(PRandom random, int k) {
+        long gen32Bits(PRandom random, @SuppressWarnings("unused") int k) {
             return random.nextInt() & 0xFFFFFFFFL;
         }