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/*
* JBoss, Home of Professional Open Source
* Copyright 2007, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ws.tools;
import java.util.HashSet;
import java.util.Set;
/**
* Singleton to check if a specified work is a restricted keyword.
*
* This list also includes the boolean literals and the null literal.
*
* @author darran.lofthouse@jboss.com
* @since 5 Mar 2007
*/
public class JavaKeywords
{
private static final JavaKeywords keywords = new JavaKeywords();
private final String[] keywordsArray = { "abstract", "assert", "boolean", "break", "byte", "case", "catch", "char", "class", "const", "continue", "default", "do",
"double", "else", "enum", "extends", "final", "finally", "float", "for", "if", "goto", "implements", "import", "instanceof", "int", "interface", "long",
"native", "new", "package", "private", "protected", "public", "return", "short", "static", "strictfp", "super", "switch", "synchronized", "this", "throw",
"throws", "transient", "try", "void", "volatile", "while" };
private final String[] restrictedLiteralsArray = { "true", "false", "null" };
private final Set<String> restrictedKeywords;
private JavaKeywords()
{
int keywordsSize = keywordsArray.length + restrictedLiteralsArray.length;
keywordsSize = (int)((double)keywordsSize / 0.75) + 1;
restrictedKeywords = new HashSet<String>(keywordsSize);
addAll(restrictedKeywords, keywordsArray);
addAll(restrictedKeywords, restrictedLiteralsArray);
}
private void addAll(final Set<String> set, final String[] data)
{
for (String current : data)
{
set.add(current);
}
}
/**
* The internal method to check if the keyword is a restricted
* keyword.
*
* @param name
* @return
*/
private boolean internalIsRestrictedKeyword(final String name)
{
return restrictedKeywords.contains(name);
}
/**
* Check is the passed in name is a reserved Java keyword.
*
* @param name
* @return
*/
public static boolean isJavaKeyword(final String name)
{
return keywords.internalIsRestrictedKeyword(name);
}
}
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