JD.java revision 1245:c55ce3738888
1/* 2 * Copyright (c) 2015, 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 26package jdk.nashorn.internal.scripts; 27 28import jdk.nashorn.internal.runtime.PropertyMap; 29import jdk.nashorn.internal.runtime.ScriptObject; 30 31/** 32 * Empty object class for dual primitive-object fields. 33 */ 34public class JD extends ScriptObject { 35 36 private static final PropertyMap map$ = PropertyMap.newMap(JD.class); 37 38 /** 39 * Returns the initial property map to be used. 40 * @return the initial property map. 41 */ 42 public static PropertyMap getInitialMap() { 43 return map$; 44 } 45 46 /** 47 * Constructor given an initial property map 48 * 49 * @param map the property map 50 */ 51 public JD(final PropertyMap map) { 52 super(map); 53 } 54 55 /** 56 * Constructor given an initial prototype and the default initial property map. 57 * 58 * @param proto the prototype object 59 */ 60 public JD(final ScriptObject proto) { 61 super(proto, getInitialMap()); 62 } 63 64 /** 65 * Constructor that takes a pre-initialized spill pool. Used by 66 * {@link jdk.nashorn.internal.codegen.SpillObjectCreator} and 67 * {@link jdk.nashorn.internal.parser.JSONParser} for initializing object literals 68 * 69 * @param map property map 70 * @param primitiveSpill primitive spill pool 71 * @param objectSpill reference spill pool 72 */ 73 public JD(final PropertyMap map, final long[] primitiveSpill, final Object[] objectSpill) { 74 super(map, primitiveSpill, objectSpill); 75 } 76 77 /** 78 * A method handle of this method is passed to the ScriptFunction constructor. 79 * 80 * @param map the property map to use for allocatorMap 81 * 82 * @return newly allocated ScriptObject 83 */ 84 public static ScriptObject allocate(final PropertyMap map) { 85 return new JD(map); 86 } 87} 88 89