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 /** 29 * A tree node for a <a href="http://www.ecma-international.org/ecma-262/6.0/#sec-variable-statement">variable declaration statement</a>. 30 * 31 * For example: 32 * <pre> 33 * <em>var</em> <em>name</em> [ <em>initializer</em> ] ; 34 * <em>var</em> <em>binding_pattern</em> [ <em>initializer</em> ]; 35 * </pre> 36 * 37 * @since 9 38 */ 39 public interface VariableTree extends StatementTree { 40 /** 41 * Returns the binding of this declaration. This is an {@link IdentifierTree} 42 * for a binding identifier case (simple variable declaration). 43 * This is an {@link ObjectLiteralTree} or a {@link ArrayLiteralTree} for a 44 * destructuring declaration. 45 * 46 * @return the binding expression of this declaration 47 */ 48 ExpressionTree getBinding(); 49 50 /** 51 * Returns the initial value expression for this variable. This is 52 * null if no initial value for this variable. 53 * 54 * @return the initial value expression 55 */ 56 ExpressionTree getInitializer(); 57 58 /** 59 * Is this a const declaration? 60 * 61 * @return true if this is a const declaration 62 */ 63 boolean isConst(); 64 65 /** 66 * Is this a let declaration? 67 * 68 * @return true if this is a let declaration 69 */ 70 boolean isLet(); 71 }