content: /*
   * Copyright (c) 1999, 2020, 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.parser;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import openjdk.tools.javac.parser.Tokens.Comment;
  import openjdk.tools.javac.tree.DCTree.DCDocComment;
  import openjdk.tools.javac.tree.DocCommentTable;
  import openjdk.tools.javac.tree.EndPosTable;
  import openjdk.tools.javac.tree.JCTree;
  import openjdk.tools.javac.util.DiagnosticSource;
  
  /**
   *
   *  <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 LazyDocCommentTable implements DocCommentTable {
      public static class Entry {
          final Comment comment;
          DCDocComment tree;
  
          Entry(Comment c) {
              comment = c;
          }
      }
  
  
      private final ParserFactory fac;
      private final boolean breakOnError;
      private final EndPosTable ept;
      private final DiagnosticSource diagSource;
      public Map<JCTree, Entry> table;
  
  
      LazyDocCommentTable(ParserFactory fac, EndPosTable ept) {
          this.fac = fac;
          this.breakOnError = fac.options.getBoolean("breakDocCommentParsingOnError", true);
          this.ept = ept;
          diagSource = fac.log.currentSource();
          table = new HashMap<>();
      }
  
      @Override
      public boolean hasComment(JCTree tree) {
          return table.containsKey(tree);
      }
  
      @Override
      public Comment getComment(JCTree tree) {
          Entry e = table.get(tree);
          return (e == null) ? null : e.comment;
      }
  
      @Override
      public String getCommentText(JCTree tree) {
          Comment c = getComment(tree);
          return (c == null) ? null : c.getText();
      }
  
      @Override
      public DCDocComment getCommentTree(JCTree tree) {
          Entry e = table.get(tree);
          if (e == null)
              return null;
          if (e.tree == null)
              e.tree = new DocCommentParser(fac, breakOnError, ept, diagSource, e.comment, false).parse();
          return e.tree;
      }
  
      @Override
      public void putComment(JCTree tree, Comment c) {
          table.put(tree, new Entry(c));
      }
  
  }
  