diff options
Diffstat (limited to 'libjava/gnu/regexp/REMatchEnumeration.java')
| -rw-r--r-- | libjava/gnu/regexp/REMatchEnumeration.java | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/libjava/gnu/regexp/REMatchEnumeration.java b/libjava/gnu/regexp/REMatchEnumeration.java deleted file mode 100644 index c8e208a9438..00000000000 --- a/libjava/gnu/regexp/REMatchEnumeration.java +++ /dev/null @@ -1,135 +0,0 @@ -/* gnu/regexp/REMatchEnumeration.java - Copyright (C) 1998-2001, 2004 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath 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 for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA -02111-1307 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -package gnu.regexp; -import java.io.Serializable; -import java.util.Enumeration; -import java.util.NoSuchElementException; - -/** - * An REMatchEnumeration enumerates regular expression matches over a - * given input text. You obtain a reference to an enumeration using - * the <code>getMatchEnumeration()</code> methods on an instance of - * RE. - * - * <P> - * - * REMatchEnumeration does lazy computation; that is, it will not - * search for a match until it needs to. If you'd rather just get all - * the matches at once in a big array, use the - * <code>getAllMatches()</code> methods on RE. However, using an - * enumeration can help speed performance when the entire text does - * not need to be searched immediately. - * - * <P> - * - * The enumerated type is especially useful when searching on a Reader - * or InputStream, because the InputStream read position cannot be - * guaranteed after calling <code>getMatch()</code> (see the - * description of that method for an explanation of why). Enumeration - * also saves a lot of overhead required when calling - * <code>getMatch()</code> multiple times. - * - * @author <A HREF="mailto:wes@cacas.org">Wes Biggs</A> - */ -public class REMatchEnumeration implements Enumeration, Serializable { - private static final int YES = 1; - private static final int MAYBE = 0; - private static final int NO = -1; - - private int more; - private REMatch match; - private RE expr; - private CharIndexed input; - private int eflags; - private int index; - - // Package scope constructor is used by RE.getMatchEnumeration() - REMatchEnumeration(RE expr, CharIndexed input, int index, int eflags) { - more = MAYBE; - this.expr = expr; - this.input = input; - this.index = index; - this.eflags = eflags; - } - - /** Returns true if there are more matches in the input text. */ - public boolean hasMoreElements() { - return hasMoreMatches(null); - } - - /** Returns true if there are more matches in the input text. */ - public boolean hasMoreMatches() { - return hasMoreMatches(null); - } - - /** Returns true if there are more matches in the input text. - * Saves the text leading up to the match (or to the end of the input) - * in the specified buffer. - */ - public boolean hasMoreMatches(StringBuffer buffer) { - if (more == MAYBE) { - match = expr.getMatchImpl(input,index,eflags,buffer); - if (match != null) { - input.move((match.end[0] > 0) ? match.end[0] : 1); - - index = (match.end[0] > 0) ? match.end[0] + match.offset : index + 1; - more = YES; - } else more = NO; - } - return (more == YES); - } - - /** Returns the next match in the input text. */ - public Object nextElement() throws NoSuchElementException { - return nextMatch(); - } - - /** - * Returns the next match in the input text. This method is provided - * for convenience to avoid having to explicitly cast the return value - * to class REMatch. - */ - public REMatch nextMatch() throws NoSuchElementException { - if (hasMoreElements()) { - more = (input.isValid()) ? MAYBE : NO; - return match; - } - throw new NoSuchElementException(); - } -} - |