CharViewBufferImpl.java, [...]: New files, not yet to be compiled.

2003-05-12  Michael Koch  <konqueror@gmx.de>

	* gnu/java/nio/CharViewBufferImpl.java,
	gnu/java/nio/DirectByteBufferImpl.java,
	gnu/java/nio/DoubleViewBufferImpl.java,
	gnu/java/nio/FloatViewBufferImpl.java,
	gnu/java/nio/IntViewBufferImpl.java,
	gnu/java/nio/LongViewBufferImpl.java,
	gnu/java/nio/ShortViewBufferImpl.java,
	gnu/java/nio/natDirectByteBufferImpl.cc:
	New files, not yet to be compiled.

From-SVN: r66727

1 files changed, 156 insertions, 0 deletions

diff --git a/libjava/gnu/java/nio/IntViewBufferImpl.java b/libjava/gnu/java/nio/IntViewBufferImpl.java
new file mode 100644
index 0000000..0bf5a08
--- /dev/null
+++ b/libjava/gnu/java/nio/IntViewBufferImpl.java
@@ -0,0 +1,156 @@
+/* IntViewBufferImpl.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 gnu.java.nio;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.IntBuffer;
+
+class IntViewBufferImpl extends IntBuffer
+{
+  private boolean readOnly;
+  private int offset;
+  private ByteBuffer bb;
+  private ByteOrder endian;
+  
+  public IntViewBufferImpl (ByteBuffer bb, boolean readOnly)
+  {
+    super (bb.remaining () >> 2, bb.remaining () >> 2, bb.position (), 0);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from IntByteBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public IntViewBufferImpl (ByteBuffer bb, int offset, int capacity,
+                               int limit, int position, int mark,
+                               boolean readOnly)
+  {
+    super (limit, limit, offset, position);
+    this.bb = bb;
+    this.readOnly = readOnly;
+    // FIXME: What if this is called from IntViewBufferImpl and ByteBuffer has changed its endianess ?
+    this.endian = bb.order ();
+  }
+
+  public int get ()
+  {
+    int result = bb.getInt ((position () >> 2) + offset);
+    position (position () + 1);
+    return result;
+  }
+
+  public int get (int index)
+  {
+    return bb.getInt ((index >> 2) + offset);
+  }
+
+  public IntBuffer put (int value)
+  {
+    bb.putInt ((position () >> 2) + offset, value);
+    return this;
+  }
+  
+  public IntBuffer put (int index, int value)
+  {
+    bb.putInt ((index >> 2) + offset, value);
+    return this;
+  }
+
+  public IntBuffer compact ()
+  {
+    if (position () > 0)
+      {
+        // Copy all data from position() to limit() to the beginning of the
+        // buffer, set position to end of data and limit to capacity
+        // XXX: This can surely be optimized, for direct and non-direct buffers
+        
+        int count = limit () - position ();
+              
+        for (int i = 0; i < count; i++)
+          {
+            bb.putInt ((i >> 2) + offset,
+                          bb.getInt (((i + position ()) >> 2) + offset));
+          }
+
+        position (count);
+        limit (capacity ());
+      }
+
+    return this;
+  }
+  
+  public IntBuffer duplicate ()
+  {
+    // Create a copy of this object that shares its content
+    // FIXME: mark is not correct
+    return new IntViewBufferImpl (bb, offset, capacity (), limit (),
+                                     position (), -1, isReadOnly ());
+  }
+  
+  public IntBuffer slice ()
+  {
+    // Create a sliced copy of this object that shares its content.
+    return new IntViewBufferImpl (bb, (position () >> 2) + offset,
+                                      remaining (), remaining (), 0, -1,
+                                     isReadOnly ());
+  }
+  
+  public IntBuffer asReadOnlyBuffer ()
+  {
+    // Create a copy of this object that shares its content and is read-only
+    return new IntViewBufferImpl (bb, (position () >> 2) + offset,
+                                     remaining (), remaining (), 0, -1, true);
+  }
+  
+  public boolean isReadOnly ()
+  {
+    return readOnly;
+  }
+  
+  public boolean isDirect ()
+  {
+    return bb.isDirect ();
+  }
+  
+  public ByteOrder order ()
+  {
+    return ByteOrder.LITTLE_ENDIAN;
+  }
+}