| /* |
| * Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| * THIS FILE WAS MODIFIED BY SUN MICROSYSTEMS, INC. |
| */ |
| |
| package com.sun.xml.internal.fastinfoset.util; |
| |
| import com.sun.xml.internal.fastinfoset.CommonResourceBundle; |
| |
| public class StringIntMap extends KeyIntMap { |
| protected static final Entry NULL_ENTRY = new Entry(null, 0, -1, null); |
| |
| protected StringIntMap _readOnlyMap; |
| |
| protected static class Entry extends BaseEntry { |
| final String _key; |
| Entry _next; |
| |
| public Entry(String key, int hash, int value, Entry next) { |
| super(hash, value); |
| _key = key; |
| _next = next; |
| } |
| } |
| |
| protected Entry _lastEntry = NULL_ENTRY; |
| |
| protected Entry[] _table; |
| |
| protected int _index; |
| |
| // Total character count of Map |
| protected int _totalCharacterCount; |
| |
| public StringIntMap(int initialCapacity, float loadFactor) { |
| super(initialCapacity, loadFactor); |
| |
| _table = new Entry[_capacity]; |
| } |
| |
| public StringIntMap(int initialCapacity) { |
| this(initialCapacity, DEFAULT_LOAD_FACTOR); |
| } |
| |
| public StringIntMap() { |
| this(DEFAULT_INITIAL_CAPACITY, DEFAULT_LOAD_FACTOR); |
| } |
| |
| public void clear() { |
| for (int i = 0; i < _table.length; i++) { |
| _table[i] = null; |
| } |
| _lastEntry = NULL_ENTRY; |
| _size = 0; |
| _index = _readOnlyMapSize; |
| _totalCharacterCount = 0; |
| } |
| |
| public void setReadOnlyMap(KeyIntMap readOnlyMap, boolean clear) { |
| if (!(readOnlyMap instanceof StringIntMap)) { |
| throw new IllegalArgumentException(CommonResourceBundle.getInstance(). |
| getString("message.illegalClass", new Object[]{readOnlyMap})); |
| } |
| |
| setReadOnlyMap((StringIntMap)readOnlyMap, clear); |
| } |
| |
| public final void setReadOnlyMap(StringIntMap readOnlyMap, boolean clear) { |
| _readOnlyMap = readOnlyMap; |
| if (_readOnlyMap != null) { |
| _readOnlyMapSize = _readOnlyMap.size(); |
| _index = _size + _readOnlyMapSize; |
| |
| if (clear) { |
| clear(); |
| } |
| } else { |
| _readOnlyMapSize = 0; |
| _index = _size; |
| } |
| } |
| |
| public final int getNextIndex() { |
| return _index++; |
| } |
| |
| public final int getIndex() { |
| return _index; |
| } |
| |
| public final int obtainIndex(String key) { |
| final int hash = hashHash(key.hashCode()); |
| |
| if (_readOnlyMap != null) { |
| final int index = _readOnlyMap.get(key, hash); |
| if (index != -1) { |
| return index; |
| } |
| } |
| |
| final int tableIndex = indexFor(hash, _table.length); |
| for (Entry e = _table[tableIndex]; e != null; e = e._next) { |
| if (e._hash == hash && eq(key, e._key)) { |
| return e._value; |
| } |
| } |
| |
| addEntry(key, hash, tableIndex); |
| return NOT_PRESENT; |
| } |
| |
| public final void add(String key) { |
| final int hash = hashHash(key.hashCode()); |
| final int tableIndex = indexFor(hash, _table.length); |
| addEntry(key, hash, tableIndex); |
| } |
| |
| public final int get(String key) { |
| if (key == _lastEntry._key) |
| return _lastEntry._value; |
| |
| return get(key, hashHash(key.hashCode())); |
| } |
| |
| public final int getTotalCharacterCount() { |
| return _totalCharacterCount; |
| } |
| |
| private final int get(String key, int hash) { |
| if (_readOnlyMap != null) { |
| final int i = _readOnlyMap.get(key, hash); |
| if (i != -1) { |
| return i; |
| } |
| } |
| |
| final int tableIndex = indexFor(hash, _table.length); |
| for (Entry e = _table[tableIndex]; e != null; e = e._next) { |
| if (e._hash == hash && eq(key, e._key)) { |
| _lastEntry = e; |
| return e._value; |
| } |
| } |
| |
| return NOT_PRESENT; |
| } |
| |
| |
| private final void addEntry(String key, int hash, int bucketIndex) { |
| Entry e = _table[bucketIndex]; |
| _table[bucketIndex] = new Entry(key, hash, _index++, e); |
| _totalCharacterCount += key.length(); |
| if (_size++ >= _threshold) { |
| resize(2 * _table.length); |
| } |
| } |
| |
| protected final void resize(int newCapacity) { |
| _capacity = newCapacity; |
| Entry[] oldTable = _table; |
| int oldCapacity = oldTable.length; |
| if (oldCapacity == MAXIMUM_CAPACITY) { |
| _threshold = Integer.MAX_VALUE; |
| return; |
| } |
| |
| Entry[] newTable = new Entry[_capacity]; |
| transfer(newTable); |
| _table = newTable; |
| _threshold = (int)(_capacity * _loadFactor); |
| } |
| |
| private final void transfer(Entry[] newTable) { |
| Entry[] src = _table; |
| int newCapacity = newTable.length; |
| for (int j = 0; j < src.length; j++) { |
| Entry e = src[j]; |
| if (e != null) { |
| src[j] = null; |
| do { |
| Entry next = e._next; |
| int i = indexFor(e._hash, newCapacity); |
| e._next = newTable[i]; |
| newTable[i] = e; |
| e = next; |
| } while (e != null); |
| } |
| } |
| } |
| |
| private final boolean eq(String x, String y) { |
| return x == y || x.equals(y); |
| } |
| } |