content: /*
   * Copyright (c) 2011, 2017, 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 openjdk.source.tree;
  
  import java.util.List;
  
  /**
   * A tree node for a lambda expression.
   *
   * For example:
   * <pre>{@code
   *   ()->{}
   *   (List<String> ls)->ls.size()
   *   (x,y)-> { return x + y; }
   * }</pre>
   */
  public interface LambdaExpressionTree extends ExpressionTree {
  
      /**
       * Lambda expressions come in two forms:
       * <ul>
       * <li> expression lambdas, whose body is an expression, and
       * <li> statement lambdas, whose body is a block
       * </ul>
       */
      public enum BodyKind {
          /** enum constant for expression lambdas */
          EXPRESSION,
          /** enum constant for statement lambdas */
          STATEMENT
      }
  
      /**
       * Returns the parameters of this lambda expression.
       * @return the parameters
       */
      List<? extends VariableTree> getParameters();
  
      /**
       * Returns the body of the lambda expression.
       * @return the body
       */
      Tree getBody();
  
      /**
       * Returns the kind of the body of the lambda expression.
       * @return the kind of the body
       */
      BodyKind getBodyKind();
  }
  