content: /*
   * Copyright (c) 2003, 2010, 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle in the LICENSE file that accompanied this code.
   *
   * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  package openjdk.tools.javac.util;
  
  import openjdk.tools.javac.code.Lint.LintCategory;
  import openjdk.tools.javac.util.JCDiagnostic.DiagnosticPosition;
  import java.util.EnumSet;
  
  /**
   * An interface to support optional warnings, needed for support of
   * unchecked conversions and unchecked casts.
   *
   * <p><b>This is NOT part of any supported API.
   * If you write code that depends on this, you do so at your own risk.
   * This code and its internal interfaces are subject to change or
   * deletion without notice.</b>
   */
  public class Warner {
  
      private DiagnosticPosition pos = null;
      protected boolean warned = false;
      private EnumSet<LintCategory> nonSilentLintSet = EnumSet.noneOf(LintCategory.class);
      private EnumSet<LintCategory> silentLintSet = EnumSet.noneOf(LintCategory.class);
  
      public DiagnosticPosition pos() {
          return pos;
      }
  
      public void warn(LintCategory lint) {
          nonSilentLintSet.add(lint);
      }
  
      public void silentWarn(LintCategory lint) {
          silentLintSet.add(lint);
      }
  
      public Warner(DiagnosticPosition pos) {
          this.pos = pos;
      }
  
      public boolean hasSilentLint(LintCategory lint) {
          return silentLintSet.contains(lint);
      }
  
      public boolean hasNonSilentLint(LintCategory lint) {
          return nonSilentLintSet.contains(lint);
      }
  
      public boolean hasLint(LintCategory lint) {
          return hasSilentLint(lint) ||
                  hasNonSilentLint(lint);
      }
  
      public void clear() {
          nonSilentLintSet.clear();
          silentLintSet.clear();
          this.warned = false;
      }
  
      public Warner() {
          this(null);
      }
  }
  