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130 lines
3.8 KiB
130 lines
3.8 KiB
/*
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*/
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/*
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* Copyright 2000-2002,2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.sun.org.apache.xerces.internal.util;
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/**
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* Synchronized symbol table.
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*
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* This class moved into the util package since it's needed by multiple
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* other classes (CachingParserPool, XMLGrammarCachingConfiguration).
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*
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* @author Andy Clark, IBM
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*/
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public final class SynchronizedSymbolTable
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extends SymbolTable {
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//
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// Data
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//
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/** Main symbol table. */
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protected SymbolTable fSymbolTable;
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//
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// Constructors
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//
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/** Constructs a synchronized symbol table. */
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public SynchronizedSymbolTable(SymbolTable symbolTable) {
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fSymbolTable = symbolTable;
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} // <init>(SymbolTable)
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// construct synchronized symbol table of default size
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public SynchronizedSymbolTable() {
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fSymbolTable = new SymbolTable();
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} // init()
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// construct synchronized symbol table of given size
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public SynchronizedSymbolTable(int size) {
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fSymbolTable = new SymbolTable(size);
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} // init(int)
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//
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// SymbolTable methods
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//
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/**
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* Adds the specified symbol to the symbol table and returns a
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* reference to the unique symbol. If the symbol already exists,
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* the previous symbol reference is returned instead, in order
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* guarantee that symbol references remain unique.
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*
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* @param symbol The new symbol.
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*/
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public String addSymbol(String symbol) {
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synchronized (fSymbolTable) {
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return fSymbolTable.addSymbol(symbol);
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}
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} // addSymbol(String)
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/**
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* Adds the specified symbol to the symbol table and returns a
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* reference to the unique symbol. If the symbol already exists,
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* the previous symbol reference is returned instead, in order
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* guarantee that symbol references remain unique.
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*
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* @param buffer The buffer containing the new symbol.
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* @param offset The offset into the buffer of the new symbol.
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* @param length The length of the new symbol in the buffer.
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*/
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public String addSymbol(char[] buffer, int offset, int length) {
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synchronized (fSymbolTable) {
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return fSymbolTable.addSymbol(buffer, offset, length);
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}
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} // addSymbol(char[],int,int):String
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/**
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* Returns true if the symbol table already contains the specified
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* symbol.
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*
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* @param symbol The symbol to look for.
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*/
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public boolean containsSymbol(String symbol) {
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synchronized (fSymbolTable) {
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return fSymbolTable.containsSymbol(symbol);
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}
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} // containsSymbol(String):boolean
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/**
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* Returns true if the symbol table already contains the specified
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* symbol.
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*
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* @param buffer The buffer containing the symbol to look for.
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* @param offset The offset into the buffer.
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* @param length The length of the symbol in the buffer.
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*/
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public boolean containsSymbol(char[] buffer, int offset, int length) {
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synchronized (fSymbolTable) {
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return fSymbolTable.containsSymbol(buffer, offset, length);
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}
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} // containsSymbol(char[],int,int):boolean
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} // class SynchronizedSymbolTable
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