From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libjava/classpath/java/lang/CharSequence.java | 99 +++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 libjava/classpath/java/lang/CharSequence.java (limited to 'libjava/classpath/java/lang/CharSequence.java') diff --git a/libjava/classpath/java/lang/CharSequence.java b/libjava/classpath/java/lang/CharSequence.java new file mode 100644 index 000000000..5c014e173 --- /dev/null +++ b/libjava/classpath/java/lang/CharSequence.java @@ -0,0 +1,99 @@ +/* CharSequence.java -- Anything that has an indexed sequence of chars + Copyright (C) 2001, 2002 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., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 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 java.lang; + +/** + * General functions on a sequence of chars. This interface is implemented + * by String, StringBuffer and + * CharBuffer to give a uniform way to get chars at a certain + * index, the number of characters in the sequence and a subrange of the + * chars. Indexes start at 0 and the last index is length()-1. + * + *

Even when classes implement this interface they are not always + * exchangeble because they might implement their compare, equals or hash + * function differently. This means that in general one should not use a + * CharSequence as keys in collections since two sequences + * with the same chars at the same indexes with the same length might not + * have the same hash code, be equal or be comparable since the are + * represented by different classes. + * + * @author Mark Wielaard (mark@klomp.org) + * @since 1.4 + * @status updated to 1.4 + */ +public interface CharSequence +{ + /** + * Returns the character at the given index. + * + * @param i the index to retrieve from + * @return the character at that location + * @throws IndexOutOfBoundsException if i < 0 || i >= length() - 1 + */ + char charAt(int i); + + /** + * Returns the length of the sequence. This is the number of 16-bit + * characters in the sequence, which may differ from the length of the + * underlying encoding. + * + * @return the sequence length + */ + int length(); + + /** + * Returns a new CharSequence of the indicated range. + * + * @param begin the start index (inclusive) + * @param end the end index (exclusive) + * @return a subsequence of this + * @throws IndexOutOfBoundsException if begin > end || begin < 0 || + * end > length() + */ + CharSequence subSequence(int begin, int end); + + /** + * Returns the complete CharSequence as a String. + * Classes that implement this interface should return a String + * which contains only the characters in the sequence in the correct order. + * + * @return the character sequence as a String + */ + String toString(); +} -- cgit v1.2.3