8343477: Remove unnecessary @SuppressWarnings annotations (compiler)

Reviewed-by: darcy, mcimadamore

Author: archiecobbs

make/jdk/src/classes/build/tools/depend/Depend.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2024, 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
@@ -446,7 +446,7 @@ public Void visitType(TypeElement e, Void p) {
         }
 
         @Override
-        public Void visitRecordComponent(@SuppressWarnings("preview")RecordComponentElement e, Void p) {
+        public Void visitRecordComponent(RecordComponentElement e, Void p) {
             update(e.getSimpleName());
             visit(e.asType());
             return null;

make/langtools/src/classes/build/tools/symbolgenerator/CreateSymbols.java

@@ -228,7 +228,6 @@ public class CreateSymbols {
     /**Create sig files for ct.sym reading the classes description from the directory that contains
      * {@code ctDescriptionFile}, using the file as a recipe to create the sigfiles.
      */
-    @SuppressWarnings("unchecked")
     public void createSymbols(String ctDescriptionFileExtra, String ctDescriptionFile, String ctSymLocation,
                               long timestamp, String currentVersion, String preReleaseTag, String moduleClasses,
                               String includedModulesFile) throws IOException {
@@ -4634,7 +4633,6 @@ private static AnnotationDescription parseAnnotation(String value, int[] valuePo
     /**Create sig files for ct.sym reading the classes description from the directory that contains
      * {@code ctDescriptionFile}, using the file as a recipe to create the sigfiles.
      */
-    @SuppressWarnings("unchecked")
     public void createJavadocData(String ctDescriptionFileExtra, String ctDescriptionFile,
                                   String targetDir, int startVersion) throws IOException {
         LoadDescriptions data = load(ctDescriptionFileExtra != null ? Paths.get(ctDescriptionFileExtra)

src/jdk.compiler/share/classes/com/sun/tools/javac/code/ClassFinder.java

@@ -719,7 +719,6 @@ private void scanPlatformPath(PackageSymbol p) throws IOException {
                     EnumSet.of(JavaFileObject.Kind.CLASS)));
     }
     // where
-        @SuppressWarnings("fallthrough")
         private void fillIn(PackageSymbol p,
                             Location location,
                             Iterable<JavaFileObject> files)

src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symbol.java

@@ -1694,7 +1694,6 @@ public List<Type> getPermittedSubclasses() {
 
     /** A class for variable symbols
      */
-    @SuppressWarnings("preview")
     public static class VarSymbol extends Symbol implements VariableElement {
 
         /** The variable's declaration position.

src/jdk.compiler/share/classes/com/sun/tools/javac/code/Type.java

@@ -361,7 +361,6 @@ public List<TypeMetadata> getMetadata() {
     /**
      * Get the type metadata of the given kind associated with this type (if any).
      */
-    @SuppressWarnings("unchecked")
     public <M extends TypeMetadata> M getMetadata(Class<M> metadataClass) {
         return getMetadata(metadataClass, Function.identity(), null);
     }
@@ -2133,7 +2132,6 @@ public final void addBound(InferenceBound ib, Type bound, Types types) {
             addBound(ib, bound, types, false);
         }
 
-        @SuppressWarnings("fallthrough")
         private void addBound(InferenceBound ib, Type bound, Types types, boolean update) {
             if (kind == Kind.CAPTURED && !update) {
                 //Captured inference variables bounds must not be updated during incorporation,

src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Analyzer.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2024, 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
@@ -611,7 +611,6 @@ public void scan() {
         }
 
         @Override
-        @SuppressWarnings("unchecked")
         public void scan(JCTree tree) {
             if (tree != null) {
                 for (StatementAnalyzer<JCTree, JCTree> analyzer : analyzers) {

src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Flow.java

@@ -3282,7 +3282,6 @@ void markDead() {
             //do nothing
         }
 
-        @SuppressWarnings("fallthrough")
         void checkEffectivelyFinal(DiagnosticPosition pos, VarSymbol sym) {
             if (currentTree != null &&
                     sym.owner.kind == MTH &&
@@ -3303,7 +3302,6 @@ int getCurrentTreeStartPosition() {
                                                      : currentTree.getStartPosition();
         }
 
-        @SuppressWarnings("fallthrough")
         void letInit(JCTree tree) {
             tree = TreeInfo.skipParens(tree);
             if (tree.hasTag(IDENT) || tree.hasTag(SELECT)) {

src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Modules.java

@@ -1023,7 +1023,7 @@ public UsesProvidesVisitor(ModuleSymbol msym, Env<AttrContext> env) {
             this.env = env;
         }
 
-        @Override @SuppressWarnings("unchecked")
+        @Override
         public void visitModuleDef(JCModuleDecl tree) {
             msym.directives = List.nil();
             msym.provides = List.nil();

src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Operators.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2024, 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
@@ -274,7 +274,6 @@ abstract class OperatorHelper {
         /** An array of operator symbol suppliers (used to lazily populate the symbol list). */
         List<Supplier<OperatorSymbol>> operatorSuppliers = List.nil();
 
-        @SuppressWarnings("varargs")
         OperatorHelper(Tag tag) {
             this.name = operatorName(tag);
         }

src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Resolve.java

@@ -5193,7 +5193,6 @@ DeferredAttrContext deferredAttrContext(Symbol sym, InferenceContext inferenceCo
          * while inapplicable candidates contain further details about the
          * reason why the method has been considered inapplicable.
          */
-        @SuppressWarnings("overrides")
         class Candidate {
 
             final MethodResolutionPhase step;

src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/JNIWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2024, 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
@@ -339,7 +339,6 @@ && isNative(md2)) {
             }
         }
     }
-    @SuppressWarnings("fallthrough")
     protected final String jniType(Type t) {
         switch (t.getKind()) {
             case ARRAY: {
@@ -442,7 +441,6 @@ static enum EncoderType {
         JNI,
         SIGNATURE
     }
-    @SuppressWarnings("fallthrough")
     static String encode(CharSequence name, EncoderType mtype) {
         StringBuilder result = new StringBuilder(100);
         int length = name.length();

src/jdk.compiler/share/classes/com/sun/tools/javac/model/AnnotationProxyMaker.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2024, 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
@@ -220,7 +220,7 @@ public void visitArray(Attribute.Array a) {
             }
         }
 
-        @SuppressWarnings({"unchecked", "rawtypes"})
+        @SuppressWarnings("unchecked")
         public void visitEnum(Attribute.Enum e) {
             if (returnClass.isEnum()) {
                 String constName = e.value.toString();

src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java

@@ -2834,7 +2834,6 @@ public JCBlock block() {
      *  LocalVariableDeclarationStatement
      *                  = { FINAL | '@' Annotation } Type VariableDeclarators ";"
      */
-    @SuppressWarnings("fallthrough")
     List<JCStatement> blockStatements() {
         //todo: skip to anchor on error(?)
         int lastErrPos = -1;
@@ -2892,7 +2891,6 @@ JCStatement parseStatementAsBlock() {
 
     /**This method parses a statement appearing inside a block.
      */
-    @SuppressWarnings("fallthrough")
     List<JCStatement> blockStatement() {
         //todo: skip to anchor on error(?)
         Comment dc;

src/jdk.compiler/share/classes/com/sun/tools/javac/parser/UnicodeReader.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2024, 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
@@ -107,7 +107,6 @@ public class UnicodeReader {
      * @param array   array containing contents of source.
      * @param length  length of meaningful content in buffer.
      */
-    @SuppressWarnings("this-escape")
     protected UnicodeReader(ScannerFactory sf, char[] array, int length) {
         this(sf.log, array, length);
     }

src/jdk.compiler/share/classes/com/sun/tools/javac/tree/JCTree.java

@@ -886,7 +886,6 @@ public List<JCTypeParameter> getTypeParameters() {
         public List<JCExpression> getImplementsClause() {
             return implementing;
         }
-        @SuppressWarnings("removal")
         @DefinedBy(Api.COMPILER_TREE)
         public List<JCExpression> getPermitsClause() {
             return permitting;

src/jdk.compiler/share/classes/com/sun/tools/javac/util/List.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2024, 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
@@ -151,7 +151,7 @@ public static <A> List<A> of(A x1, A x2, A x3) {
 
     /** Construct a list consisting of given elements.
      */
-    @SuppressWarnings({"varargs", "unchecked"})
+    @SuppressWarnings("unchecked")
     public static <A> List<A> of(A x1, A x2, A x3, A... rest) {
         return new List<>(x1, new List<>(x2, new List<>(x3, from(rest))));
     }

src/jdk.compiler/share/classes/com/sun/tools/javac/util/RichDiagnosticFormatter.java

@@ -652,7 +652,6 @@ public static class RichConfiguration extends ForwardingDiagnosticFormatter.Forw
         /** set of enabled rich formatter's features */
         protected java.util.EnumSet<RichFormatterFeature> features;
 
-        @SuppressWarnings("fallthrough")
         public RichConfiguration(Options options, AbstractDiagnosticFormatter formatter) {
             super(formatter.getConfiguration());
             features = formatter.isRaw() ? EnumSet.noneOf(RichFormatterFeature.class) :