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FYI: Patch: java.nio: Reimplementing byte buffer getType/putType methods


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Hi list,


I commited the attached patch to make ByteBuffer implementations work 
and easier to maintain. There is still some room for optimization but 
having a working version is more important for now. ;-)


Michael
- -- 
Homepage: http://www.worldforge.org/
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Index: ChangeLog
===================================================================
RCS file: /cvs/gcc/gcc/libjava/ChangeLog,v
retrieving revision 1.2173
diff -u -b -B -r1.2173 ChangeLog
--- ChangeLog	24 Sep 2003 05:39:23 -0000	1.2173
+++ ChangeLog	25 Sep 2003 06:35:53 -0000
@@ -1,3 +1,15 @@
+2003-09-25  Michael Koch  <konqueror@gmx.de>
+
+	* java/nio/ByteBufferHelper.java:
+	New file.
+	* java/nio/ByteBufferImpl.java,
+	java/nio/DirectByteBufferImpl.java,
+	java/nio/MappedByteBufferImpl.java
+	(getType,putType): Use new helper class ByteBufferHelper.
+	* Makefile.am (ordinary_java_source_files):
+	Added java/nio/ByteBufferHelper.java.
+	* Makefile.in: Regenerated.
+
 2003-09-24  Michael Koch  <konqueror@gmx.de>
 
 	* acinclude.m4 (AM_LC_LOCALES): Added check for locale.h.
Index: java/nio/ByteBufferHelper.java
===================================================================
RCS file: java/nio/ByteBufferHelper.java
diff -N java/nio/ByteBufferHelper.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ java/nio/ByteBufferHelper.java	25 Sep 2003 06:35:58 -0000
@@ -0,0 +1,589 @@
+/* ByteBufferImpl.java -- 
+   Copyright (C) 2003 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 java.nio;
+
+/**
+ * @author Michael Koch <konqueror@gmx.de>
+ */
+final class ByteBufferHelper
+{
+  private static final void checkRemainingForRead (ByteBuffer buffer, int bytes)
+  {
+    if (buffer.remaining() < bytes)
+      throw new BufferUnderflowException();
+  }
+  
+  private static final void checkRemainingForWrite (ByteBuffer buffer, int bytes)
+  {
+    if (buffer.remaining() < bytes)
+      throw new BufferOverflowException();
+  }
+
+  private static final void checkAvailableForRead (ByteBuffer buffer,
+                                                   int index, int bytes)
+  {
+    if (buffer.limit() < (index + bytes))
+      throw new BufferUnderflowException();
+  }
+  
+  private static final void checkAvailableForWrite (ByteBuffer buffer,
+                                                    int index, int bytes)
+  {
+    if (buffer.limit() < (index + bytes))
+      throw new BufferOverflowException();
+  }
+  
+  public static final char getChar (ByteBuffer buffer)
+  {
+    checkRemainingForRead (buffer, 2);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (char) ((buffer.get() & 0xff)
+                       + ((buffer.get() & 0xff) << 8));
+      }
+    
+    return (char) (((buffer.get() & 0xff) << 8)
+                   + (buffer.get() & 0xff));
+  }
+  
+  public static final ByteBuffer putChar (ByteBuffer buffer, char value)
+  {
+    checkRemainingForWrite (buffer, 2);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put ((byte) (((int) value) & 0x00ff));
+        buffer.put ((byte) ((((int) value) & 0xff00) >> 8));
+      }
+    else
+      {
+        buffer.put ((byte) ((((int) value) & 0xff00) >> 8));
+        buffer.put ((byte) (((int) value) & 0x00ff));
+      }
+
+    return buffer;
+  }
+  
+  public static final char getChar (ByteBuffer buffer, int index)
+  {
+    checkAvailableForRead (buffer, index, 2);
+    
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (char) (((buffer.get (index + 1) & 0xff) << 8)
+                       + (buffer.get (index) & 0xff));
+      }
+
+    return (char) (((buffer.get (index) & 0xff) << 8)
+                   + (buffer.get (index + 1) & 0xff));
+  }
+  
+  public static final ByteBuffer putChar (ByteBuffer buffer, int index,
+                                          char value)
+  {
+    checkAvailableForWrite (buffer, index, 2);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put (index + 1, (byte) ((((int) value) & 0x00ff) >> 8));
+        buffer.put (index, (byte) (((int) value) & 0xff00));
+      }
+    else
+      {
+        buffer.put (index, (byte) ((((int) value) & 0xff00) >> 8));
+        buffer.put (index + 1, (byte) (((int) value) & 0x00ff));
+      }
+    
+    return buffer;
+  }
+
+  public static final short getShort (ByteBuffer buffer)
+  {
+    checkRemainingForRead (buffer, 2);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (short) ((buffer.get() & 0xff)
+                        + ((buffer.get() & 0xff) << 8));
+      }
+
+    return (short) (((buffer.get() & 0xff) << 8)
+                    + (buffer.get() & 0xff));
+  }
+  
+  public static final ByteBuffer putShort (ByteBuffer buffer, short value)
+  {
+    checkRemainingForWrite (buffer, 2);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put ((byte) (((int) value) & 0x00ff));
+        buffer.put ((byte) ((((int) value) & 0xff00) >> 8));
+      }
+    else
+      {
+        buffer.put ((byte) ((((int) value) & 0xff00) >> 8));
+        buffer.put ((byte) (((int) value) & 0x00ff));
+      }
+
+    return buffer;
+  }
+  
+  public static final short getShort (ByteBuffer buffer, int index)
+  {
+    checkAvailableForRead (buffer, index, 2);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (short) ((buffer.get (index) & 0xff)
+                        + ((buffer.get (index + 1) & 0xff) << 8));
+      }
+
+    return (short) (((buffer.get (index) & 0xff) << 8)
+                    + (buffer.get (index + 1) & 0xff));
+  }
+  
+  public static final ByteBuffer putShort (ByteBuffer buffer, int index,
+                                           short value)
+  {
+    checkAvailableForWrite (buffer, index, 2);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put (index + 1, (byte) ((((int) value) & 0xff00) >> 8));
+        buffer.put (index, (byte) (((int) value) & 0x00ff));
+      }
+    else
+      {
+        buffer.put (index, (byte) ((((int) value) & 0xff00) >> 8));
+        buffer.put (index + 1, (byte) (((int) value) & 0x00ff));
+      }
+    
+    return buffer;
+  }
+
+  public static final int getInt (ByteBuffer buffer)
+  {
+    checkRemainingForRead (buffer, 4);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (int) ((buffer.get() & 0xff)
+                      + ((buffer.get() & 0xff) << 8)
+                      + ((buffer.get() & 0xff) << 16)
+                      + ((buffer.get() & 0xff) << 24));
+      }
+
+    return (int) (((buffer.get() & 0xff) << 24)
+                  + ((buffer.get() & 0xff) << 16)
+                  + ((buffer.get() & 0xff) << 8)
+                  + (buffer.get() & 0xff));
+  }
+  
+  public static final ByteBuffer putInt (ByteBuffer buffer, int value)
+  {
+    checkRemainingForWrite (buffer, 4);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put ((byte) (value & 0x000000ff));
+        buffer.put ((byte) ((value & 0x0000ff00) >> 8));
+        buffer.put ((byte) ((value & 0x00ff0000) >> 16));
+        buffer.put ((byte) ((value & 0xff000000) >> 24));
+      }
+    else
+      {
+        buffer.put ((byte) ((value & 0xff000000) >> 24));
+        buffer.put ((byte) ((value & 0x00ff0000) >> 16));
+        buffer.put ((byte) ((value & 0x0000ff00) >> 8));
+        buffer.put ((byte) (value & 0x000000ff));
+      }
+    
+    return buffer;
+  }
+  
+  public static final int getInt (ByteBuffer buffer, int index)
+  {
+    checkAvailableForRead (buffer, index, 4);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (int) ((buffer.get (index) & 0xff))
+                      + ((buffer.get (index + 1) & 0xff) << 8)
+                      + ((buffer.get (index + 2) & 0xff) << 16)
+                      + ((buffer.get (index + 3) & 0xff) << 24);
+      }
+
+    return (int) (((buffer.get (index) & 0xff) << 24)
+                  + ((buffer.get (index + 1) & 0xff) << 16)
+                  + ((buffer.get (index + 2) & 0xff) << 8)
+                  + (buffer.get (index + 3) & 0xff));
+  }
+  
+  public static final ByteBuffer putInt (ByteBuffer buffer, int index,
+                                         int value)
+  {
+    checkAvailableForWrite (buffer, index, 4);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put (index + 3, (byte) ((value & 0xff000000) >> 24));
+        buffer.put (index + 2, (byte) ((value & 0x00ff0000) >> 16));
+        buffer.put (index + 1, (byte) ((value & 0x0000ff00) >> 8));
+        buffer.put (index, (byte) (value & 0x000000ff));
+      }
+    else
+      {
+        buffer.put (index, (byte) ((value & 0xff000000) >> 24));
+        buffer.put (index + 1, (byte) ((value & 0x00ff0000) >> 16));
+        buffer.put (index + 2, (byte) ((value & 0x0000ff00) >> 8));
+        buffer.put (index + 3, (byte) (value & 0x000000ff));
+      }
+  
+    return buffer;
+  }
+
+  public static final long getLong (ByteBuffer buffer)
+  {
+    checkRemainingForRead (buffer, 8);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (long) (((buffer.get() & 0xff))
+                       + ((buffer.get() & 0xff) << 8)
+                       + ((buffer.get() & 0xff) << 16)
+                       + ((buffer.get() & 0xff) << 24)
+                       + ((buffer.get() & 0xff) << 32)
+                       + ((buffer.get() & 0xff) << 40)
+                       + ((buffer.get() & 0xff) << 48)
+                       + ((buffer.get() & 0xff) << 56));
+      }
+
+    return (long) (((buffer.get() & 0xff) << 56)
+                   + ((buffer.get() & 0xff) << 48)
+                   + ((buffer.get() & 0xff) << 40)
+                   + ((buffer.get() & 0xff) << 32)
+                   + ((buffer.get() & 0xff) << 24)
+                   + ((buffer.get() & 0xff) << 16)
+                   + ((buffer.get() & 0xff) << 8)
+                   + (buffer.get() & 0xff));
+  }
+  
+  public static final ByteBuffer putLong (ByteBuffer buffer, long value)
+  {
+    checkRemainingForWrite (buffer, 8);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put ((byte) (value & 0xff00000000000000L));
+        buffer.put ((byte) ((value & 0x00ff000000000000L) >> 8));
+        buffer.put ((byte) ((value & 0x0000ff0000000000L) >> 16));
+        buffer.put ((byte) ((value & 0x000000ff00000000L) >> 24));
+        buffer.put ((byte) ((value & 0x00000000ff000000L) >> 32));
+        buffer.put ((byte) ((value & 0x0000000000ff0000L) >> 40));
+        buffer.put ((byte) ((value & 0x000000000000ff00L) >> 48));
+        buffer.put ((byte) ((value & 0x00000000000000ffL) >> 56));
+      }
+    else
+      {
+        buffer.put ((byte) ((value & 0xff00000000000000L) >> 56));
+        buffer.put ((byte) ((value & 0x00ff000000000000L) >> 48));
+        buffer.put ((byte) ((value & 0x0000ff0000000000L) >> 40));
+        buffer.put ((byte) ((value & 0x000000ff00000000L) >> 32));
+        buffer.put ((byte) ((value & 0x00000000ff000000L) >> 24));
+        buffer.put ((byte) ((value & 0x0000000000ff0000L) >> 16));
+        buffer.put ((byte) ((value & 0x000000000000ff00L) >> 8));
+        buffer.put ((byte) (value & 0x00000000000000ffL));
+      }
+    
+    return buffer;
+  }
+  
+  public static final long getLong (ByteBuffer buffer, int index)
+  {
+    checkAvailableForRead (buffer, index, 8);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (long) ((buffer.get (index) & 0xff)
+                       + ((buffer.get (index + 1) & 0xff) << 8)
+                       + ((buffer.get (index + 2) & 0xff) << 16)
+                       + ((buffer.get (index + 3) & 0xff) << 24)
+                       + ((buffer.get (index + 4) & 0xff) << 32)
+                       + ((buffer.get (index + 5) & 0xff) << 40)
+                       + ((buffer.get (index + 6) & 0xff) << 48)
+                       + ((buffer.get (index + 7) & 0xff) << 56));
+      }
+
+    return (long) (((buffer.get (index) & 0xff) << 56)
+                   + ((buffer.get (index + 1) & 0xff) << 48)
+                   + ((buffer.get (index + 2) & 0xff) << 40)
+                   + ((buffer.get (index + 3) & 0xff) << 32)
+                   + ((buffer.get (index + 4) & 0xff) << 24)
+                   + ((buffer.get (index + 5) & 0xff) << 16)
+                   + ((buffer.get (index + 6) & 0xff) << 8)
+                   + (buffer.get (index + 7) & 0xff));
+  }
+  
+  public static final ByteBuffer putLong (ByteBuffer buffer, int index,
+                                          long value)
+  {
+    checkAvailableForWrite (buffer, index, 8);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put (index + 7, (byte) ((value & 0xff00000000000000L) >> 56));
+        buffer.put (index + 6, (byte) ((value & 0x00ff000000000000L) >> 48));
+        buffer.put (index + 5, (byte) ((value & 0x0000ff0000000000L) >> 40));
+        buffer.put (index + 4, (byte) ((value & 0x000000ff00000000L) >> 32));
+        buffer.put (index + 3, (byte) ((value & 0x00000000ff000000L) >> 24));
+        buffer.put (index + 2, (byte) ((value & 0x0000000000ff0000L) >> 16));
+        buffer.put (index + 1, (byte) ((value & 0x000000000000ff00L) >> 8));
+        buffer.put (index, (byte) (value & 0x00000000000000ffL));
+      }
+    else
+      {
+        buffer.put (index, (byte) ((value & 0xff00000000000000L) >> 56));
+        buffer.put (index + 1, (byte) ((value & 0x00ff000000000000L) >> 48));
+        buffer.put (index + 2, (byte) ((value & 0x0000ff0000000000L) >> 40));
+        buffer.put (index + 3, (byte) ((value & 0x000000ff00000000L) >> 32));
+        buffer.put (index + 4, (byte) ((value & 0x00000000ff000000L) >> 24));
+        buffer.put (index + 5, (byte) ((value & 0x0000000000ff0000L) >> 16));
+        buffer.put (index + 6, (byte) ((value & 0x000000000000ff00L) >> 8));
+        buffer.put (index + 7, (byte) (value & 0x00000000000000ffL));
+      }
+    
+    return buffer;
+  }
+
+  public static final float getFloat (ByteBuffer buffer)
+  {
+    checkRemainingForRead (buffer, 4);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (float) ((buffer.get() & 0xff)
+                        + ((buffer.get() & 0xff) << 8)
+                        + ((buffer.get() & 0xff) << 16)
+                        + ((buffer.get() & 0xff) << 24));
+      }
+
+    return (float) (((buffer.get() & 0xff) << 24)
+                    + ((buffer.get() & 0xff) << 16)
+                    + ((buffer.get() & 0xff) << 8)
+                    + (buffer.get() & 0xff));
+  }
+  
+  public static final ByteBuffer putFloat (ByteBuffer buffer, float value)
+  {
+    checkRemainingForWrite (buffer, 4);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put ((byte) (((int) value) & 0xff000000));
+        buffer.put ((byte) ((((int) value) & 0x00ff0000) >> 8));
+        buffer.put ((byte) ((((int) value) & 0x0000ff00) >> 16));
+        buffer.put ((byte) ((((int) value) & 0x000000ff) >> 24));
+      }
+    else
+      {
+        buffer.put ((byte) ((((int) value) & 0xff000000) >> 24));
+        buffer.put ((byte) ((((int) value) & 0x00ff0000) >> 16));
+        buffer.put ((byte) ((((int) value) & 0x0000ff00) >> 8));
+        buffer.put ((byte) (((int) value) & 0x000000ff));
+      }
+
+    return buffer;
+  }
+  
+  public static final float getFloat (ByteBuffer buffer, int index)
+  {
+    checkAvailableForRead (buffer, index, 4);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (float) ((buffer.get (index) & 0xff)
+                        + ((buffer.get (index + 1) & 0xff) << 8)
+                        + ((buffer.get (index + 2) & 0xff) << 16)
+                        + ((buffer.get (index + 3) & 0xff) << 24));
+      }
+
+    return (float) (((buffer.get (index) & 0xff) << 24)
+                    + ((buffer.get (index + 1) & 0xff) << 16)
+                    + ((buffer.get (index + 2) & 0xff) << 8)
+                    + (buffer.get (index + 3) & 0xff));
+  }
+
+  public static final ByteBuffer putFloat (ByteBuffer buffer, int index,
+                                           float value)
+  {
+    checkAvailableForWrite (buffer, index, 4);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put (index + 3, (byte) ((((int) value) & 0xff000000) >> 24));
+        buffer.put (index + 2, (byte) ((((int) value) & 0x00ff0000) >> 16));
+        buffer.put (index + 1, (byte) ((((int) value) & 0x0000ff00) >> 8));
+        buffer.put (index, (byte) (((int) value) & 0x000000ff));
+      }
+    else
+      {
+        buffer.put (index, (byte) ((((int) value) & 0xff000000) >> 24));
+        buffer.put (index + 1, (byte) ((((int) value) & 0x00ff0000) >> 16));
+        buffer.put (index + 2, (byte) ((((int) value) & 0x0000ff00) >> 8));
+        buffer.put (index + 3, (byte) (((int) value) & 0x000000ff));
+      }
+
+    return buffer;
+  }
+
+  public static final double getDouble (ByteBuffer buffer)
+  {
+    checkRemainingForRead (buffer, 8);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (double) ((buffer.get() & 0xff)
+                         + ((buffer.get() & 0xff) << 8)
+                         + ((buffer.get() & 0xff) << 16)
+                         + ((buffer.get() & 0xff) << 24)
+                         + ((buffer.get() & 0xff) << 32)
+                         + ((buffer.get() & 0xff) << 40)
+                         + ((buffer.get() & 0xff) << 48)
+                         + ((buffer.get() & 0xff) << 56));
+      }
+
+    return (double) (((buffer.get() & 0xff) << 56)
+                     + ((buffer.get() & 0xff) << 48)
+                     + ((buffer.get() & 0xff) << 40)
+                     + ((buffer.get() & 0xff) << 32)
+                     + ((buffer.get() & 0xff) << 24)
+                     + ((buffer.get() & 0xff) << 16)
+                     + ((buffer.get() & 0xff) << 8)
+                     + (buffer.get() & 0xff));
+  }
+
+  public static final ByteBuffer putDouble (ByteBuffer buffer, double value)
+  {
+    checkRemainingForWrite (buffer, 8);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put ((byte) (((long) value) & 0xff00000000000000L));
+        buffer.put ((byte) ((((long) value) & 0x00ff000000000000L) >> 8));
+        buffer.put ((byte) ((((long) value) & 0x0000ff0000000000L) >> 16));
+        buffer.put ((byte) ((((long) value) & 0x000000ff00000000L) >> 24));
+        buffer.put ((byte) ((((long) value) & 0x00000000ff000000L) >> 32));
+        buffer.put ((byte) ((((long) value) & 0x0000000000ff0000L) >> 40));
+        buffer.put ((byte) ((((long) value) & 0x000000000000ff00L) >> 48));
+        buffer.put ((byte) ((((long) value) & 0x00000000000000ffL) >> 56));
+      }
+    else
+      {
+        buffer.put ((byte) ((((long) value) & 0xff00000000000000L) >> 56));
+        buffer.put ((byte) ((((long) value) & 0x00ff000000000000L) >> 48));
+        buffer.put ((byte) ((((long) value) & 0x0000ff0000000000L) >> 40));
+        buffer.put ((byte) ((((long) value) & 0x000000ff00000000L) >> 32));
+        buffer.put ((byte) ((((long) value) & 0x00000000ff000000L) >> 24));
+        buffer.put ((byte) ((((long) value) & 0x0000000000ff0000L) >> 16));
+        buffer.put ((byte) ((((long) value) & 0x000000000000ff00L) >> 8));
+        buffer.put ((byte) (((long) value) & 0x00000000000000ffL));
+      }
+    
+    return buffer;
+  }
+  
+  public static final double getDouble (ByteBuffer buffer, int index)
+  {
+    checkAvailableForRead (buffer, index, 8);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        return (double) ((buffer.get (index) & 0xff)
+                         + ((buffer.get (index + 1) & 0xff) << 8)
+                         + ((buffer.get (index + 2) & 0xff) << 16)
+                         + ((buffer.get (index + 3) & 0xff) << 24)
+                         + ((buffer.get (index + 4) & 0xff) << 32)
+                         + ((buffer.get (index + 5) & 0xff) << 40)
+                         + ((buffer.get (index + 6) & 0xff) << 48)
+                         + ((buffer.get (index + 7) & 0xff) << 56));
+      }
+
+    return (double) (((buffer.get (index) & 0xff) << 56)
+                     + ((buffer.get (index + 1) & 0xff) << 48)
+                     + ((buffer.get (index + 2) & 0xff) << 40)
+                     + ((buffer.get (index + 3) & 0xff) << 32)
+                     + ((buffer.get (index + 4) & 0xff) << 24)
+                     + ((buffer.get (index + 5) & 0xff) << 16)
+                     + ((buffer.get (index + 6) & 0xff) << 8)
+                     + (buffer.get (index + 7) & 0xff));
+  }
+  
+  public static final ByteBuffer putDouble (ByteBuffer buffer, int index,
+                                            double value)
+  {
+    checkAvailableForWrite (buffer, index, 8);
+
+    if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
+      {
+        buffer.put (index + 7, (byte) ((((long) value) & 0xff00000000000000L) >> 56));
+        buffer.put (index + 6, (byte) ((((long) value) & 0x00ff000000000000L) >> 48));
+        buffer.put (index + 5, (byte) ((((long) value) & 0x0000ff0000000000L) >> 40));
+        buffer.put (index + 4, (byte) ((((long) value) & 0x000000ff00000000L) >> 32));
+        buffer.put (index + 3, (byte) ((((long) value) & 0x00000000ff000000L) >> 24));
+        buffer.put (index + 2, (byte) ((((long) value) & 0x0000000000ff0000L) >> 16));
+        buffer.put (index + 1, (byte) ((((long) value) & 0x000000000000ff00L) >> 8));
+        buffer.put (index, (byte) (((long) value) & 0x00000000000000ffL));
+      }
+    else
+      {
+        buffer.put (index, (byte) ((((long) value) & 0xff00000000000000L) >> 56));
+        buffer.put (index + 1, (byte) ((((long) value) & 0x00ff000000000000L) >> 48));
+        buffer.put (index + 2, (byte) ((((long) value) & 0x0000ff0000000000L) >> 40));
+        buffer.put (index + 3, (byte) ((((long) value) & 0x000000ff00000000L) >> 32));
+        buffer.put (index + 4, (byte) ((((long) value) & 0x00000000ff000000L) >> 24));
+        buffer.put (index + 5, (byte) ((((long) value) & 0x0000000000ff0000L) >> 16));
+        buffer.put (index + 6, (byte) ((((long) value) & 0x000000000000ff00L) >> 8));
+        buffer.put (index + 7, (byte) (((long) value) & 0x00000000000000ffL));
+      }
+    
+    return buffer;
+  }
+
+} // ByteBufferHelper
Index: java/nio/ByteBufferImpl.java
===================================================================
RCS file: /cvs/gcc/gcc/libjava/java/nio/ByteBufferImpl.java,v
retrieving revision 1.3
diff -u -b -B -r1.3 ByteBufferImpl.java
--- java/nio/ByteBufferImpl.java	2 Aug 2003 11:17:40 -0000	1.3
+++ java/nio/ByteBufferImpl.java	25 Sep 2003 06:35:58 -0000
@@ -182,313 +182,121 @@
   
   final public char getChar ()
   {
-    if (remaining() < 2)
-      throw new BufferUnderflowException();
-
-    // FIXME: this handles little endian only
-    return (char) (((get () & 0xff) << 8)
-                   + (get () & 0xff));
+    return ByteBufferHelper.getChar (this);
   }
   
   final public ByteBuffer putChar (char value)
   {
-    if (remaining() < 2)
-      throw new BufferOverflowException();
-
-    // FIXME: this handles little endian only
-    put ((byte) ((((int) value) & 0xff00) >> 8));
-    put ((byte) (((int) value) & 0x00ff));
-    return this;
+    return ByteBufferHelper.putChar (this, value);
   }
   
   final public char getChar (int index)
   {
-    if (remaining() < 2)
-      throw new BufferUnderflowException();
-
-    // FIXME: this handles little endian only
-    return (char) (((get (index) & 0xff) << 8) + (get (index + 1) & 0xff));
+    return ByteBufferHelper.getChar (this, index);
   }
   
   final public ByteBuffer putChar (int index, char value)
   {
-    if (remaining() < 2)
-      throw new BufferOverflowException();
-    // FIXME: this handles little endian only
-    put (index, (byte) ((((int) value) & 0xff00) >> 8));
-    put (index + 1, (byte) (((int) value) & 0x00ff));
-    return this;
+    return ByteBufferHelper.putChar (this, index, value);
   }
 
   final public short getShort ()
   {
-    if (remaining() < 2)
-      throw new BufferUnderflowException();
-
-    // FIXME: this handles little endian only
-    return (short) (((get () & 0xff) << 8) + (get () & 0xff));
+    return ByteBufferHelper.getShort (this);
   }
   
   final public ByteBuffer putShort (short value)
   {
-    if (remaining() < 2)
-      throw new BufferOverflowException();
-
-    // FIXME: this handles little endian only
-    put ((byte) ((((int) value) & 0xff00) >> 8));
-    put ((byte) (((int) value) & 0x00ff));
-    return this;
+    return ByteBufferHelper.putShort (this, value);
   }
   
   final public short getShort (int index)
   {
-    if (remaining() < 2)
-      throw new BufferUnderflowException();
-
-    // FIXME: this handles little endian only
-    return (short) (((get (index) & 0xff) << 8) + (get (index + 1) & 0xff));
+    return ByteBufferHelper.getShort (this, index);
   }
   
   final public ByteBuffer putShort (int index, short value)
   {
-    if (remaining() < 2)
-      throw new BufferOverflowException();
-
-    // FIXME: this handles little endian only
-    put (index, (byte) ((((int) value) & 0xff00) >> 8));
-    put (index + 1, (byte) (((int) value) & 0x00ff));
-    return this;
+    return ByteBufferHelper.putShort (this, index, value);
   }
 
   final public int getInt ()
   {
-    if (remaining() < 4)
-      throw new BufferUnderflowException();
-
-    // FIXME: this handles little endian only
-    return (int) (((get () & 0xff) << 24)
-                  + ((get () & 0xff) << 16)
-                  + ((get () & 0xff) << 8)
-                  + (get () & 0xff));
+    return ByteBufferHelper.getInt (this);
   }
   
   final public ByteBuffer putInt (int value)
   {
-    if (remaining() < 4)
-      throw new BufferOverflowException();
-
-    // FIXME: this handles little endian only
-    put ((byte) ((value & 0xff000000) >> 24));
-    put ((byte) ((value & 0x00ff0000) >> 16));
-    put ((byte) ((value & 0x0000ff00) >> 8));
-    put ((byte) (value & 0x000000ff));
-    return this;
+    return ByteBufferHelper.putInt (this, value);
   }
   
   final public int getInt (int index)
   {
-    if (remaining() < 4)
-      throw new BufferUnderflowException();
-
-    // FIXME: this handles little endian only
-    return (int) (((get (index) & 0xff) << 24)
-                  + ((get (index + 1) & 0xff) << 16)
-                  + ((get (index + 2) & 0xff) << 8)
-                  + (get (index + 3) & 0xff));
+    return ByteBufferHelper.getInt (this, index);
   }
   
   final public ByteBuffer putInt (int index, int value)
   {
-    if (remaining() < 4)
-      throw new BufferOverflowException();
-
-    // FIXME: this handles little endian only
-    put (index, (byte) ((value & 0xff000000) >> 24));
-    put (index + 1, (byte) ((value & 0x00ff0000) >> 16));
-    put (index + 2, (byte) ((value & 0x0000ff00) >> 8));
-    put (index + 3, (byte) (value & 0x000000ff));
-    return this;
+    return ByteBufferHelper.putInt (this, index, value);
   }
 
   final public long getLong ()
   {
-    if (remaining() < 8)
-      throw new BufferUnderflowException();
-
-    // FIXME: this handles little endian only
-    return (long) (((get () & 0xff) << 56)
-                   + ((get () & 0xff) << 48)
-                   + ((get () & 0xff) << 40)
-                   + ((get () & 0xff) << 32)
-                   + ((get () & 0xff) << 24)
-                   + ((get () & 0xff) << 16)
-                   + ((get () & 0xff) << 8)
-                   + (get () & 0xff));
+    return ByteBufferHelper.getLong (this);
   }
   
   final public ByteBuffer putLong (long value)
   {
-    if (remaining() < 8)
-      throw new BufferOverflowException();
-
-    // FIXME: this handles little endian only
-    put ((byte) ((value & 0xff00000000000000L) >> 56));
-    put ((byte) ((value & 0x00ff000000000000L) >> 48));
-    put ((byte) ((value & 0x0000ff0000000000L) >> 40));
-    put ((byte) ((value & 0x000000ff00000000L) >> 32));
-    put ((byte) ((value & 0x00000000ff000000L) >> 24));
-    put ((byte) ((value & 0x0000000000ff0000L) >> 16));
-    put ((byte) ((value & 0x000000000000ff00L) >> 8));
-    put ((byte) (value & 0x00000000000000ffL));
-    return this;
+    return ByteBufferHelper.putLong (this, value);
   }
   
   final public long getLong (int index)
   {
-    if (remaining() < 8)
-      throw new BufferUnderflowException();
-
-    // FIXME: this handles little endian only
-    return (long) (((get (index) & 0xff) << 56)
-                   + ((get (index + 1) & 0xff) << 48)
-                   + ((get (index + 2) & 0xff) << 40)
-                   + ((get (index + 3) & 0xff) << 32)
-                   + ((get (index + 4) & 0xff) << 24)
-                   + ((get (index + 5) & 0xff) << 16)
-                   + ((get (index + 6) & 0xff) << 8)
-                   + (get (index + 7) & 0xff));
+    return ByteBufferHelper.getLong (this, index);
   }
   
   final public ByteBuffer putLong (int index, long value)
   {
-    if (remaining() < 8)
-      throw new BufferOverflowException();
-
-    // FIXME: this handles little endian only
-    put (index, (byte) ((value & 0xff00000000000000L) >> 56));
-    put (index + 1, (byte) ((value & 0x00ff000000000000L) >> 48));
-    put (index + 2, (byte) ((value & 0x0000ff0000000000L) >> 40));
-    put (index + 3, (byte) ((value & 0x000000ff00000000L) >> 32));
-    put (index + 4, (byte) ((value & 0x00000000ff000000L) >> 24));
-    put (index + 5, (byte) ((value & 0x0000000000ff0000L) >> 16));
-    put (index + 6, (byte) ((value & 0x000000000000ff00L) >> 8));
-    put (index + 7, (byte) (value & 0x00000000000000ffL));
-    return this;
+    return ByteBufferHelper.putLong (this, index, value);
   }
 
   final public float getFloat ()
   {
-    if (remaining() < 4)
-      throw new BufferUnderflowException();
-
-    // FIXME: this handles little endian only
-    return (float) (((get () & 0xff) << 24)
-                    + ((get () & 0xff) << 16)
-                    + ((get () & 0xff) << 8)
-                    + (get () & 0xff));
+    return ByteBufferHelper.getFloat (this);
   }
   
   final public ByteBuffer putFloat (float value)
   {
-    if (remaining() < 4)
-      throw new BufferOverflowException();
-
-    // FIXME: this handles little endian only
-    put ((byte) ((((int) value) & 0xff000000) >> 24));
-    put ((byte) ((((int) value) & 0x00ff0000) >> 16));
-    put ((byte) ((((int) value) & 0x0000ff00) >> 8));
-    put ((byte) (((int) value) & 0x000000ff));
-    return this;
+    return ByteBufferHelper.putFloat (this, value);
   }
   
   final public float getFloat (int index)
   {
-    if (remaining() < 4)
-      throw new BufferUnderflowException();
+    return ByteBufferHelper.getFloat (this, index);
+  }
 
-    // FIXME: this handles little endian only
-    return (float) (((get (index) & 0xff) << 24)
-                    + ((get (index + 1) & 0xff) << 16)
-                    + ((get (index + 2) & 0xff) << 8)
-                    + (get (index + 3) & 0xff));
-  }
-
-  final public ByteBuffer putFloat (int index, float value)
-  {
-    if (remaining() < 4)
-      throw new BufferOverflowException();
-
-    // FIXME: this handles little endian only
-    put (index, (byte) ((((int) value) & 0xff000000) >> 24));
-    put (index + 1, (byte) ((((int) value) & 0x00ff0000) >> 16));
-    put (index + 2, (byte) ((((int) value) & 0x0000ff00) >> 8));
-    put (index + 3, (byte) (((int) value) & 0x000000ff));
-    return this;
+  public final ByteBuffer putFloat (int index, float value)
+  {
+    return ByteBufferHelper.putFloat (this, index, value);
   }
 
   final public double getDouble ()
   {
-    if (remaining() < 8)
-      throw new BufferUnderflowException();
-
-    // FIXME: this handles little endian only
-    return (double) (((get () & 0xff) << 56)
-                     + ((get () & 0xff) << 48)
-                     + ((get () & 0xff) << 40)
-                     + ((get () & 0xff) << 32)
-                     + ((get () & 0xff) << 24)
-                     + ((get () & 0xff) << 16)
-                     + ((get () & 0xff) << 8)
-                     + (get () & 0xff));
+    return ByteBufferHelper.getDouble (this);
   }
 
   final public ByteBuffer putDouble (double value)
   {
-    if (remaining() < 8)
-      throw new BufferOverflowException();
-
-    // FIXME: this handles little endian only
-    put ((byte) ((((long) value) & 0xff00000000000000L) >> 56));
-    put ((byte) ((((long) value) & 0x00ff000000000000L) >> 48));
-    put ((byte) ((((long) value) & 0x0000ff0000000000L) >> 40));
-    put ((byte) ((((long) value) & 0x000000ff00000000L) >> 32));
-    put ((byte) ((((long) value) & 0x00000000ff000000L) >> 24));
-    put ((byte) ((((long) value) & 0x0000000000ff0000L) >> 16));
-    put ((byte) ((((long) value) & 0x000000000000ff00L) >> 8));
-    put ((byte) (((long) value) & 0x00000000000000ffL));
-    return this;
+    return ByteBufferHelper.putDouble (this, value);
   }
   
   final public double getDouble (int index)
   {
-    if (remaining() < 8)
-      throw new BufferUnderflowException();
-
-    // FIXME: this handles little endian only
-    return (double) (((get (index) & 0xff) << 56)
-                     + ((get (index + 1) & 0xff) << 48)
-                     + ((get (index + 2) & 0xff) << 40)
-                     + ((get (index + 3) & 0xff) << 32)
-                     + ((get (index + 4) & 0xff) << 24)
-                     + ((get (index + 5) & 0xff) << 16)
-                     + ((get (index + 6) & 0xff) << 8)
-                     + (get (index + 7) & 0xff));
+    return ByteBufferHelper.getDouble (this, index);
   }
   
   final public ByteBuffer putDouble (int index, double value)
   {
-    if (remaining() < 8)
-      throw new BufferOverflowException();
-
-    // FIXME: this handles little endian only
-    put (index, (byte) ((((long) value) & 0xff00000000000000L) >> 56));
-    put (index + 1, (byte) ((((long) value) & 0x00ff000000000000L) >> 48));
-    put (index + 2, (byte) ((((long) value) & 0x0000ff0000000000L) >> 40));
-    put (index + 3, (byte) ((((long) value) & 0x000000ff00000000L) >> 32));
-    put (index + 4, (byte) ((((long) value) & 0x00000000ff000000L) >> 24));
-    put (index + 5, (byte) ((((long) value) & 0x0000000000ff0000L) >> 16));
-    put (index + 6, (byte) ((((long) value) & 0x000000000000ff00L) >> 8));
-    put (index + 7, (byte) (((long) value) & 0x00000000000000ffL));
-    return this;
+    return ByteBufferHelper.putDouble (this, index, value);
   }
 }
Index: java/nio/DirectByteBufferImpl.java
===================================================================
RCS file: /cvs/gcc/gcc/libjava/java/nio/DirectByteBufferImpl.java,v
retrieving revision 1.4
diff -u -b -B -r1.4 DirectByteBufferImpl.java
--- java/nio/DirectByteBufferImpl.java	2 Aug 2003 11:17:40 -0000	1.4
+++ java/nio/DirectByteBufferImpl.java	25 Sep 2003 06:35:58 -0000
@@ -292,134 +292,56 @@
   
   final public ByteBuffer putLong (long value)
   {
-    // FIXME: this handles little endian only
-    put ((byte) ((value & 0xff00000000000000L) >> 56));
-    put ((byte) ((value & 0x00ff000000000000L) >> 48));
-    put ((byte) ((value & 0x0000ff0000000000L) >> 40));
-    put ((byte) ((value & 0x000000ff00000000L) >> 32));
-    put ((byte) ((value & 0x00000000ff000000L) >> 24));
-    put ((byte) ((value & 0x0000000000ff0000L) >> 16));
-    put ((byte) ((value & 0x000000000000ff00L) >> 8));
-    put ((byte) (value & 0x00000000000000ffL));
-    return this;
+    return ByteBufferHelper.putLong (this, value);
   }
   
   final public long getLong (int index)
   {
-    // FIXME: this handles little endian only
-    return (long) (((get (index) & 0xff) << 56)
-                   + ((get (index + 1) & 0xff) << 48)
-                   + ((get (index + 2) & 0xff) << 40)
-                   + ((get (index + 3) & 0xff) << 32)
-                   + ((get (index + 4) & 0xff) << 24)
-                   + ((get (index + 5) & 0xff) << 16)
-                   + ((get (index + 6) & 0xff) << 8)
-                   + (get (index + 7) & 0xff));
+    return ByteBufferHelper.getLong (this, index);
   }
   
   final public ByteBuffer putLong (int index, long value)
   {
-    // FIXME: this handles little endian only
-    put (index, (byte) ((value & 0xff00000000000000L) >> 56));
-    put (index + 1, (byte) ((value & 0x00ff000000000000L) >> 48));
-    put (index + 2, (byte) ((value & 0x0000ff0000000000L) >> 40));
-    put (index + 3, (byte) ((value & 0x000000ff00000000L) >> 32));
-    put (index + 4, (byte) ((value & 0x00000000ff000000L) >> 24));
-    put (index + 5, (byte) ((value & 0x0000000000ff0000L) >> 16));
-    put (index + 6, (byte) ((value & 0x000000000000ff00L) >> 8));
-    put (index + 7, (byte) (value & 0x00000000000000ffL));
-    return this;
+    return ByteBufferHelper.putLong (this, index, value);
   }
 
   final public float getFloat ()
   {
-    // FIXME: this handles little endian only
-    return (float) (((get () & 0xff) << 24)
-                    + ((get () & 0xff) << 16)
-                    + ((get () & 0xff) << 8)
-                    + (get () & 0xff));
+    return ByteBufferHelper.getFloat (this);
   }
   
   final public ByteBuffer putFloat (float value)
   {
-    // FIXME: this handles little endian only
-    put ((byte) ((((int) value) & 0xff000000) >> 24));
-    put ((byte) ((((int) value) & 0x00ff0000) >> 16));
-    put ((byte) ((((int) value) & 0x0000ff00) >> 8));
-    put ((byte) (((int) value) & 0x000000ff));
-    return this;
+    return ByteBufferHelper.putFloat (this, value);
   }
   
-  final public float getFloat (int index)
-  {
-    // FIXME: this handles little endian only
-    return (float) (((get (index) & 0xff) << 24)
-                    + ((get (index + 1) & 0xff) << 16)
-                    + ((get (index + 2) & 0xff) << 8)
-                    + (get (index + 3) & 0xff));
+  public final float getFloat (int index)
+  {
+    return ByteBufferHelper.getFloat (this, index);
   }
 
   final public ByteBuffer putFloat (int index, float value)
   {
-    // FIXME: this handles little endian only
-    put (index, (byte) ((((int) value) & 0xff000000) >> 24));
-    put (index + 1, (byte) ((((int) value) & 0x00ff0000) >> 16));
-    put (index + 2, (byte) ((((int) value) & 0x0000ff00) >> 8));
-    put (index + 3, (byte) (((int) value) & 0x000000ff));
-    return this;
+    return ByteBufferHelper.putFloat (this, index, value);
   }
 
   final public double getDouble ()
   {
-    // FIXME: this handles little endian only
-    return (double) (((get () & 0xff) << 56)
-                     + ((get () & 0xff) << 48)
-                     + ((get () & 0xff) << 40)
-                     + ((get () & 0xff) << 32)
-                     + ((get () & 0xff) << 24)
-                     + ((get () & 0xff) << 16)
-                     + ((get () & 0xff) << 8)
-                     + (get () & 0xff));
+    return ByteBufferHelper.getDouble (this);
   }
 
   final public ByteBuffer putDouble (double value)
   {
-    // FIXME: this handles little endian only
-    put ((byte) ((((long) value) & 0xff00000000000000L) >> 56));
-    put ((byte) ((((long) value) & 0x00ff000000000000L) >> 48));
-    put ((byte) ((((long) value) & 0x0000ff0000000000L) >> 40));
-    put ((byte) ((((long) value) & 0x000000ff00000000L) >> 32));
-    put ((byte) ((((long) value) & 0x00000000ff000000L) >> 24));
-    put ((byte) ((((long) value) & 0x0000000000ff0000L) >> 16));
-    put ((byte) ((((long) value) & 0x000000000000ff00L) >> 8));
-    put ((byte) (((long) value) & 0x00000000000000ffL));
-    return this;
+    return ByteBufferHelper.putDouble (this, value);
   }
   
   final public double getDouble (int index)
   {
-    // FIXME: this handles little endian only
-    return (double) (((get (index) & 0xff) << 56)
-                     + ((get (index + 1) & 0xff) << 48)
-                     + ((get (index + 2) & 0xff) << 40)
-                     + ((get (index + 3) & 0xff) << 32)
-                     + ((get (index + 4) & 0xff) << 24)
-                     + ((get (index + 5) & 0xff) << 16)
-                     + ((get (index + 6) & 0xff) << 8)
-                     + (get (index + 7) & 0xff));
+    return ByteBufferHelper.getDouble (this, index);
   }
   
   final public ByteBuffer putDouble (int index, double value)
   {
-    // FIXME: this handles little endian only
-    put (index, (byte) ((((long) value) & 0xff00000000000000L) >> 56));
-    put (index + 1, (byte) ((((long) value) & 0x00ff000000000000L) >> 48));
-    put (index + 2, (byte) ((((long) value) & 0x0000ff0000000000L) >> 40));
-    put (index + 3, (byte) ((((long) value) & 0x000000ff00000000L) >> 32));
-    put (index + 4, (byte) ((((long) value) & 0x00000000ff000000L) >> 24));
-    put (index + 5, (byte) ((((long) value) & 0x0000000000ff0000L) >> 16));
-    put (index + 6, (byte) ((((long) value) & 0x000000000000ff00L) >> 8));
-    put (index + 7, (byte) (((long) value) & 0x00000000000000ffL));
-    return this;
+    return ByteBufferHelper.putDouble (this, index, value);
   }
 }
Index: java/nio/MappedByteBufferImpl.java
===================================================================
RCS file: /cvs/gcc/gcc/libjava/java/nio/MappedByteBufferImpl.java,v
retrieving revision 1.3
diff -u -b -B -r1.3 MappedByteBufferImpl.java
--- java/nio/MappedByteBufferImpl.java	2 Aug 2003 11:17:40 -0000	1.3
+++ java/nio/MappedByteBufferImpl.java	25 Sep 2003 06:35:58 -0000
@@ -58,6 +58,15 @@
     limit ((int) si);
   }
 
+  public MappedByteBufferImpl (FileChannelImpl ch, int offset, int capacity, int limit, int position, int mark, boolean readOnly)
+  {
+    super (capacity, limit, position, mark);
+
+    this.ch = ch;
+    this.array_offset = offset;
+    this.readOnly = readOnly;
+  }
+  
   public boolean isReadOnly ()
   {
     return readOnly;
@@ -164,147 +173,123 @@
     return new DoubleViewBufferImpl (this, position (), remaining(), remaining (), 0, -1, isReadOnly ());
   }
 
-  public char getChar ()
+  public final char getChar()
   {
-    char value = getChar (position());
-    position (position() + 2);
-    return value;
+    return ByteBufferHelper.getChar (this);
   }
 
-  public char getChar (int index)
+  public final ByteBuffer putChar (char value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putChar (this, value);
   }
 
-  public ByteBuffer putChar (char value)
+  public final char getChar (int index)
   {
-    putChar (position(), value);
-    position (position() + 2);
-    return this;
+    return ByteBufferHelper.getChar (this, index);
   }
 
-  public ByteBuffer putChar (int index, char value)
+  public final ByteBuffer putChar (int index, char value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putChar (this, index, value);
   }
 
-  public double getDouble ()
+  public final short getShort()
   {
-    double value = getDouble (position());
-    position (position() + 8);
-    return value;
+    return ByteBufferHelper.getShort (this);
   }
 
-  public double getDouble (int index)
+  public final ByteBuffer putShort (short value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putShort (this, value);
   }
 
-  public ByteBuffer putDouble (double value)
+  public final short getShort (int index)
   {
-    putDouble (position(), value);
-    position (position() + 8);
-    return this;
+    return ByteBufferHelper.getShort (this, index);
   }
 
-  public ByteBuffer putDouble (int index, double value)
+  public final ByteBuffer putShort (int index, short value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putShort (this, index, value);
   }
 
-  public float getFloat ()
+  public final int getInt()
   {
-    float value = getFloat (position ());
-    position (position() + 4);
-    return value;
+    return ByteBufferHelper.getInt (this);
   }
 
-  public float getFloat (int index)
+  public final ByteBuffer putInt (int value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putInt (this, value);
   }
 
-  public ByteBuffer putFloat (float value)
+  public final int getInt (int index)
   {
-    putFloat (position(), value);
-    position (position() + 4);
-    return this;
+    return ByteBufferHelper.getInt (this, index);
   }
 
-  public ByteBuffer putFloat (int index, float value)
+  public final ByteBuffer putInt (int index, int value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putInt (this, index, value);
   }
 
-  public int getInt ()
+  public final long getLong()
   {
-    int value = getInt (position());
-    position (position() + 8);
-    return value;
+    return ByteBufferHelper.getLong (this);
   }
 
-  public int getInt (int index)
+  public final ByteBuffer putLong (long value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putLong (this, value);
   }
 
-  public ByteBuffer putInt (int value)
+  public final long getLong (int index)
   {
-    putInt (position(), value);
-    position (position() + 4);
-    return this;
+    return ByteBufferHelper.getLong (this, index);
   }
 
-  public ByteBuffer putInt (int index, int value)
+  public final ByteBuffer putLong (int index, long value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putLong (this, index, value);
   }
 
-  public long getLong ()
+  public final float getFloat()
   {
-    long value = getLong (position());
-    position (position() + 8);
-    return value;
+    return ByteBufferHelper.getFloat (this);
   }
 
-  public long getLong (int index)
+  public final ByteBuffer putFloat (float value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putFloat (this, value);
   }
 
-  public ByteBuffer putLong (long value)
+  public final float getFloat (int index)
   {
-    putLong (position(), value);
-    position (position() + 8);
-    return this;
+    return ByteBufferHelper.getFloat (this, index);
   }
 
-  public ByteBuffer putLong (int index, long value)
+  public final ByteBuffer putFloat (int index, float value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putFloat (this, index, value);
   }
 
-  public short getShort ()
+  public final double getDouble()
   {
-    short value = getShort (position());
-    position (position() + 2);
-    return value;
+    return ByteBufferHelper.getDouble (this);
   }
 
-  public short getShort (int index)
+  public final ByteBuffer putDouble (double value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putDouble (this, value);
   }
 
-  public ByteBuffer putShort (short value)
+  public final double getDouble (int index)
   {
-    putShort (position(), value);
-    position (position() + 2);
-    return this;
+    return ByteBufferHelper.getDouble (this, index);
   }
 
-  public ByteBuffer putShort (int index, short value)
+  public final ByteBuffer putDouble (int index, double value)
   {
-    throw new Error ("Not implemented");
+    return ByteBufferHelper.putDouble (this, index, value);
   }
 }

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