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/nio/CharBufferImpl.java | 214 +++++++++++++++++++++++++ 1 file changed, 214 insertions(+) create mode 100644 libjava/classpath/java/nio/CharBufferImpl.java (limited to 'libjava/classpath/java/nio/CharBufferImpl.java') diff --git a/libjava/classpath/java/nio/CharBufferImpl.java b/libjava/classpath/java/nio/CharBufferImpl.java new file mode 100644 index 000000000..8df9dbbea --- /dev/null +++ b/libjava/classpath/java/nio/CharBufferImpl.java @@ -0,0 +1,214 @@ +/* CharBufferImpl.java -- + Copyright (C) 2002, 2003, 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., 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.nio; + +/** + * This is a Heap memory implementation + */ +final class CharBufferImpl extends CharBuffer +{ + private final boolean readOnly; + + CharBufferImpl (int capacity) + { + this (new char [capacity], 0, capacity, capacity, 0, -1, false); + } + + CharBufferImpl (char[] buffer, int offset, int capacity, int limit, int position, int mark, boolean readOnly) + { + super (capacity, limit, position, mark, null, buffer, offset); + this.readOnly = readOnly; + } + + public CharBufferImpl (CharBufferImpl copy) + { + super (copy.capacity (), copy.limit (), copy.position (), 0, null, copy.backing_buffer, copy.array_offset); + this.readOnly = copy.isReadOnly (); + } + + public boolean isReadOnly () + { + return readOnly; + } + + public CharBuffer slice () + { + return new CharBufferImpl (backing_buffer, array_offset + position (), remaining (), remaining (), 0, -1, isReadOnly ()); + } + + public CharBuffer duplicate () + { + return new CharBufferImpl (backing_buffer, array_offset, capacity (), limit (), position (), mark, isReadOnly ()); + } + + public CharBuffer asReadOnlyBuffer () + { + return new CharBufferImpl (backing_buffer, array_offset, capacity (), limit (), position (), mark, true); + } + + public CharBuffer compact () + { + checkIfReadOnly(); + mark = -1; + int p = position(); + int n = limit() - p; + if (n > 0) + { + System.arraycopy(backing_buffer, array_offset + p, + backing_buffer, array_offset, n); + } + position(n); + limit(capacity()); + return this; + } + + public boolean isDirect () + { + return false; + } + + public CharSequence subSequence (int start, int end) + { + if (start < 0 + || start > length () + || end < start + || end > length ()) + throw new IndexOutOfBoundsException (); + + return new CharBufferImpl (backing_buffer, array_offset, capacity (), position () + end, position () + start, -1, isReadOnly ()); + } + + /** + * Reads the char at this buffer's current position, + * and then increments the position. + * + * @exception BufferUnderflowException If there are no remaining + * chars in this buffer. + */ + public char get () + { + if (pos >= limit) + throw new BufferUnderflowException(); + + return backing_buffer [(pos++) + array_offset]; + } + + /** + * Relative put method. Writes value to the next position + * in the buffer. + * + * @exception ReadOnlyBufferException If this buffer is read-only. + */ + public CharBuffer put (char value) + { + if (readOnly) + throw new ReadOnlyBufferException(); + if (pos >= limit) + throw new BufferOverflowException(); + + backing_buffer [(pos++) + array_offset] = value; + return this; + } + + /** + * Absolute get method. Reads the char at position + * index. + * + * @param index Position to read the char from. + * + * @exception IndexOutOfBoundsException If index is negative or not smaller + * than the buffer's limit. + */ + public char get (int index) + { + checkIndex(index); + + return backing_buffer [index + array_offset]; + } + + /** + * Bulk get, overloaded for speed. + */ + public CharBuffer get (char[] dst, int offset, int length) + { + checkArraySize(dst.length, offset, length); + checkForUnderflow(length); + + System.arraycopy(backing_buffer, pos + array_offset, + dst, offset, length); + pos += length; + return this; + } + + /** + * Bulk put, overloaded for speed. + */ + public CharBuffer put (char[] src, int offset, int length) + { + checkArraySize(src.length, offset, length); + checkForOverflow(length); + + System.arraycopy(src, offset, + backing_buffer, pos + array_offset, length); + pos += length; + return this; + } + + /** + * Absolute put method. Writes value to position + * index in the buffer. + * + * @exception IndexOutOfBoundsException If index is negative or not smaller + * than the buffer's limit. + * @exception ReadOnlyBufferException If this buffer is read-only. + */ + public CharBuffer put (int index, char value) + { + checkIndex(index); + checkIfReadOnly(); + + backing_buffer [index + array_offset] = value; + return this; + } + + public ByteOrder order () + { + return ByteOrder.nativeOrder (); + } +} -- cgit v1.2.3