From ec730df5fc5d0e879363556e6d9032f3104d0f49 Mon Sep 17 00:00:00 2001 From: Anthony Green Date: Tue, 9 Mar 2004 19:14:23 +0000 Subject: Makefile.am: Build property resource files into libgcj. 2004-03-08 Anthony Green * Makefile.am: Build property resource files into libgcj. * Makefile.in: Rebuilt. * java/util/regex/Matcher.java, java/util/regex/Pattern.java, java/util/regex/PatternSyntaxException.java, gnu/regexp/CharIndexed.java, gnu/regexp/CharIndexedCharArray.java, gnu/regexp/CharIndexedInputStream.java, gnu/regexp/CharIndexedReader.java, gnu/regexp/CharIndexedString.java, gnu/regexp/CharIndexedStringBuffer.java, gnu/regexp/RE.java, gnu/regexp/REException.java, gnu/regexp/REFilterInputStream.java, gnu/regexp/REFilterReader.java, gnu/regexp/REMatch.java, gnu/regexp/REMatchEnumeration.java, gnu/regexp/RESyntax.java, gnu/regexp/REToken.java, gnu/regexp/RETokenAny.java, gnu/regexp/RETokenBackRef.java, gnu/regexp/RETokenChar.java, gnu/regexp/RETokenEnd.java, gnu/regexp/RETokenEndSub.java, gnu/regexp/RETokenLookAhead.java, gnu/regexp/RETokenOneOf.java, gnu/regexp/RETokenPOSIX.java, gnu/regexp/RETokenRange.java, gnu/regexp/RETokenRepeated.java, gnu/regexp/RETokenStart.java, gnu/regexp/RETokenWordBoundary.java, gnu/regexp/UncheckedRE.java: Files merged from GNU Classpath. From-SVN: r79198 --- libjava/gnu/regexp/CharIndexed.java | 84 +++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 libjava/gnu/regexp/CharIndexed.java (limited to 'libjava/gnu/regexp/CharIndexed.java') diff --git a/libjava/gnu/regexp/CharIndexed.java b/libjava/gnu/regexp/CharIndexed.java new file mode 100644 index 0000000..eb1be13 --- /dev/null +++ b/libjava/gnu/regexp/CharIndexed.java @@ -0,0 +1,84 @@ +/* gnu/regexp/CharIndexed.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; + +/** + * Defines the interface used internally so that different types of source + * text can be accessed in the same way. Built-in concrete classes provide + * support for String, StringBuffer, InputStream and char[] types. + * A class that is CharIndexed supports the notion of a cursor within a + * block of text. The cursor must be able to be advanced via the move() + * method. The charAt() method returns the character at the cursor position + * plus a given offset. + * + * @author Wes Biggs + */ +public interface CharIndexed { + /** + * Defines a constant (0xFFFF was somewhat arbitrarily chosen) + * that can be returned by the charAt() function indicating that + * the specified index is out of range. + */ + char OUT_OF_BOUNDS = '\uFFFF'; + + /** + * Returns the character at the given offset past the current cursor + * position in the input. The index of the current position is zero. + * It is possible for this method to be called with a negative index. + * This happens when using the '^' operator in multiline matching mode + * or the '\b' or '\<' word boundary operators. In any case, the lower + * bound is currently fixed at -2 (for '^' with a two-character newline). + * + * @param index the offset position in the character field to examine + * @return the character at the specified index, or the OUT_OF_BOUNDS + * character defined by this interface. + */ + char charAt(int index); + + /** + * Shifts the input buffer by a given number of positions. Returns + * true if the new cursor position is valid. + */ + boolean move(int index); + + /** + * Returns true if the most recent move() operation placed the cursor + * position at a valid position in the input. + */ + boolean isValid(); +} -- cgit v1.1