Showing the changes to java/pkg/com/sun/script/util/BindingsEntrySet.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2005, 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.script.util; | |
| 27 | +import java.util.*; | |
| 28 | + | |
| 29 | +/** | |
| 30 | + * Entry set implementation for Bindings implementations | |
| 31 | + * | |
| 32 | + * @author Mike Grogan | |
| 33 | + * @since 1.6 | |
| 34 | + */ | |
| 35 | +public class BindingsEntrySet extends AbstractSet<Map.Entry<String, Object>> { | |
| 36 | + | |
| 37 | + private BindingsBase base; | |
| 38 | + private String[] keys; | |
| 39 | + | |
| 40 | + public BindingsEntrySet(BindingsBase base) { | |
| 41 | + this.base = base; | |
| 42 | + keys = base.getNames(); | |
| 43 | + } | |
| 44 | + | |
| 45 | + public int size() { | |
| 46 | + return keys.length; | |
| 47 | + } | |
| 48 | + | |
| 49 | + public Iterator<Map.Entry<String, Object>> iterator() { | |
| 50 | + return new BindingsIterator(); | |
| 51 | + } | |
| 52 | + | |
| 53 | + public class BindingsEntry implements Map.Entry<String, Object> { | |
| 54 | + private String key; | |
| 55 | + public BindingsEntry(String key) { | |
| 56 | + this.key = key; | |
| 57 | + } | |
| 58 | + | |
| 59 | + public Object setValue(Object value) { | |
| 60 | + throw new UnsupportedOperationException(); | |
| 61 | + } | |
| 62 | + | |
| 63 | + public String getKey() { | |
| 64 | + return key; | |
| 65 | + } | |
| 66 | + | |
| 67 | + public Object getValue() { | |
| 68 | + return base.get(key); | |
| 69 | + } | |
| 70 | + | |
| 71 | + } | |
| 72 | + | |
| 73 | + public class BindingsIterator implements Iterator<Map.Entry<String, Object>> { | |
| 74 | + | |
| 75 | + private int current = 0; | |
| 76 | + private boolean stale = false; | |
| 77 | + | |
| 78 | + public boolean hasNext() { | |
| 79 | + return (current < keys.length); | |
| 80 | + } | |
| 81 | + | |
| 82 | + public BindingsEntry next() { | |
| 83 | + stale = false; | |
| 84 | + return new BindingsEntry(keys[current++]); | |
| 85 | + } | |
| 86 | + | |
| 87 | + public void remove() { | |
| 88 | + if (stale || current == 0) { | |
| 89 | + throw new IllegalStateException(); | |
| 90 | + } | |
| 91 | + | |
| 92 | + stale = true; | |
| 93 | + base.remove(keys[current - 1]); | |
| 94 | + } | |
| 95 | + | |
| 96 | + } | |
| 97 | + | |
| 98 | +} | |