content: /*
   * Copyright (c) 2006, 2019, 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
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   */
  
  package jdkx.tools;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.Objects;
  
  /**
   * Provides an easy way to collect diagnostics in a list.
   *
   * @param <S> the type of source objects used by diagnostics received
   * by this object
   *
   * @author Peter von der Ah&eacute;
   * @since 1.6
   */
  public final class DiagnosticCollector<S> implements DiagnosticListener<S> {
      private List<Diagnostic<? extends S>> diagnostics =
              Collections.synchronizedList(new ArrayList<Diagnostic<? extends S>>());
  
      /**
       * Creates a new instance of DiagnosticCollector.
       */
      public DiagnosticCollector() {}
  
      public void report(Diagnostic<? extends S> diagnostic) {
          Objects.requireNonNull(diagnostic);
          diagnostics.add(diagnostic);
      }
  
      /**
       * Returns a list view of diagnostics collected by this object.
       *
       * @return a list view of diagnostics
       */
      public List<Diagnostic<? extends S>> getDiagnostics() {
          return Collections.unmodifiableList(diagnostics);
      }
  }
  