1 /*

     2  * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package com.sun.source.tree;

    27 

    28 import java.util.List;

    29 

    30 /**

    31  * A tree node for a lambda expression.

    32  *

    33  * For example:

    34  * <pre>

    35  *   ()->{}

    36  *   (List<String> ls)->ls.size()

    37  *   (x,y)-> { return x + y; }

    38  * </pre>

    39  */

    40 public interface LambdaExpressionTree extends ExpressionTree {

    41 

    42     /**

    43      * Lambda expressions come in two forms: (i) expression lambdas, whose body

    44      * is an expression, and (ii) statement lambdas, whose body is a block

    45      */

    46     public enum BodyKind {

    47         /** enum constant for expression lambdas */

    48         EXPRESSION,

    49         /** enum constant for statement lambdas */

    50         STATEMENT;

    51     }

    52 

    53     List<? extends VariableTree> getParameters();

    54     Tree getBody();

    55     BodyKind getBodyKind();

    56 }