1 /* 2 * Copyright (c) 2016, 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 jdk.nashorn.api.tree; 27 28 import java.util.List; 29 30 /** 31 * A tree node for <a href="http://www.ecma-international.org/ecma-262/6.0/#sec-function-defining-expressions">function expressions</a> including <a href="http://www.ecma-international.org/ecma-262/6.0/#sec-arrow-function-definitions">arrow functions</a>. 32 * 33 * For example: 34 * <pre> 35 * <em>var</em> func = <em>function</em> 36 * ( <em>parameters</em> ) 37 * <em>body</em> 38 * </pre> 39 * 40 * <pre> 41 * <em>var</em> func = <em>(x) => x+1</em> 42 * </pre> 43 * 44 * @since 9 45 */ 46 public interface FunctionExpressionTree extends ExpressionTree { 47 /** 48 * Returns the name of the function being declared. 49 * 50 * @return name the function declared 51 */ 52 IdentifierTree getName(); 53 54 /** 55 * Returns the parameters of this function. 56 * 57 * @return the list of parameters 58 */ 59 List<? extends ExpressionTree> getParameters(); 60 61 /** 62 * Returns the body of this function. This may be a {@link BlockTree} when this 63 * function has a block body. This is an {@link ExpressionTree} when the function body 64 * is a concise expression as in an expression arrow, or in an expression closure. 65 * 66 * @return the body of this function 67 */ 68 Tree getBody(); 69 70 /** 71 * Is this a strict function? 72 * 73 * @return true if this function is strict 74 */ 75 boolean isStrict(); 76 77 /** 78 * Is this a arrow function? 79 * 80 * @return true if this is a arrow function 81 */ 82 boolean isArrow(); 83 84 /** 85 * Is this a generator function? 86 * 87 * @return true if this is a generator function 88 */ 89 boolean isGenerator(); 90 }