src/share/classes/com/sun/source/tree/LambdaExpressionTree.java

Wed, 23 Jan 2013 13:27:24 -0800

author
jjg
date
Wed, 23 Jan 2013 13:27:24 -0800
changeset 1521
71f35e4b93a5
parent 1326
30c36e23f154
child 1590
011cf7e0a148
permissions
-rw-r--r--

8006775: JSR 308: Compiler changes in JDK8
Reviewed-by: jjg
Contributed-by: mernst@cs.washington.edu, wmdietl@cs.washington.edu, mpapi@csail.mit.edu, mahmood@notnoop.com

     1 /*
     2  * Copyright (c) 2011, 2012, 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  */
    26 package com.sun.source.tree;
    28 import java.util.List;
    30 /**
    31  * A tree node for a lambda expression.
    32  *
    33  * For example:
    34  * <pre>{@code
    35  *   ()->{}
    36  *   (List<String> ls)->ls.size()
    37  *   (x,y)-> { return x + y; }
    38  * }</pre>
    39  */
    40 public interface LambdaExpressionTree extends ExpressionTree {
    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     }
    53     List<? extends VariableTree> getParameters();
    54     Tree getBody();
    55     BodyKind getBodyKind();
    56 }

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