content: /*
   * Copyright (c) 2005, 2014, 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.source.tree;
  
  import java.util.List;
  import jdkx.tools.JavaFileObject;
  
  /**
   * Represents the abstract syntax tree for ordinary compilation units
   * and modular compilation units.
   *
   * @jls 7.3 Compilation Units
   * @jls 7.4 Package Declarations
   * @jls 7.7 Module Declarations
   *
   * @author Peter von der Ah&eacute;
   * @since 1.6
   */
  public interface CompilationUnitTree extends Tree {
  
      /**
       * Returns the module tree associated with this compilation unit,
       * or {@code null} if there is no module declaration.
       * @return the module tree
       * @implSpec This implementation throws {@code UnsupportedOperationException}
       * @since 17
       */
       default ModuleTree getModule() {
           throw new UnsupportedOperationException();
       }
  
      /**
       * Returns the annotations listed on any package declaration
       * at the head of this compilation unit, or {@code null} if there
       * is no package declaration.
       * @return the package annotations
       */
      List<? extends AnnotationTree> getPackageAnnotations();
  
      /**
       * Returns the name contained in any package declaration
       * at the head of this compilation unit, or {@code null} if there
       * is no package declaration.
       * @return the package name
       */
      ExpressionTree getPackageName();
  
      /**
       * Returns the package tree associated with this compilation unit,
       * or {@code null} if there is no package declaration.
       * @return the package tree
       * @since 9
       */
      PackageTree getPackage();
  
      /**
       * Returns the import declarations appearing in this compilation unit,
       * or an empty list if there are no import declarations.
       * @return the import declarations
       */
      List<? extends ImportTree> getImports();
  
      /**
       * Returns the type declarations appearing in this compilation unit,
       * or an empty list if there are no type declarations.
       * The list may also include empty statements resulting from
       * extraneous semicolons.
       * A modular compilation unit does not contain any type declarations.
       * @return the type declarations
       */
      List<? extends Tree> getTypeDecls();
  
      /**
       * Returns the file object containing the source for this compilation unit.
       * @return the file object
       */
      JavaFileObject getSourceFile();
  
      /**
       * Returns the line map for this compilation unit, if available,
       * or {@code null} if the line map is not available.
       * @return the line map for this compilation unit
       */
      LineMap getLineMap();
  }
  