import org.checkerframework.checker.regex.qual.*;

package com.sun.org.apache.xerces.internal.impl.xpath.regex;

public class RegularExpression implements java.io.Serializable {
    public RegularExpression(@Regex String regex) throws ParseException;
    public RegularExpression(@Regex String regex, String options) throws ParseException;
    RegularExpression(@Regex String regex, Token tok, int parens, boolean hasBackReferences, int options);
}

public final class REUtil {
    static String stripExtendedComment(String regex);  // no @Regex annotation needed
    public static boolean matches(@Regex String regex, String target) throws ParseException;
    public static boolean matches(@Regex String regex, String options, String target) throws ParseException;
}

class RegexParser {
    synchronized Token parse(@Regex String regex, int options) throws ParseException;
    public RegularExpression createRegex(@Regex String regex, int options) throws ParseException;
}