1 files changed, 127 insertions, 0 deletions
diff --git a/libjava/gnu/classpath/jdwp/id/JdwpId.java b/libjava/gnu/classpath/jdwp/id/JdwpId.java
new file mode 100644
index 00000000000..81b6d265985
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+++ b/libjava/gnu/classpath/jdwp/id/JdwpId.java
@@ -0,0 +1,127 @@
+/* JdwpId.java -- base class for all object ID types
+   Copyright (C) 2005 Free Software Foundation
+
+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
+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.classpath.jdwp.id;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+
+/**
+ * A baseclass for all object types reported to the debugger
+ *
+ * @author Keith Seitz  <keiths@redhat.com>
+ */
+public abstract class JdwpId
+{
+  /**
+   * ID assigned to this object
+   */
+  protected long _id;
+
+  /**
+   * Tag of ID's type (see {@link gnu.classpath.jdwp.JdwpConstants.Tag})
+   * for object-like IDs or the type tag (see {@link
+   * gnu.classpath.JdwpConstants.TypeTag}) for reference type IDs.
+   */
+  private byte _tag;
+
+  /**
+   * Constructs an empty <code>JdwpId</code>
+   */
+  public JdwpId (byte tag)
+  {
+    _tag = tag;
+  }
+
+  /**
+   * Sets the id for this object reference
+   */
+  void setId (long id)
+  {
+    _id = id;
+  }
+
+  /**
+   * Returns the id for this object reference
+   */
+  public long getId ()
+  {
+    return _id;
+  }
+
+  /**
+   * Compares two object ids for equality. Two object ids
+   * are equal if they point to the same type and contain to
+   * the same id number. (NOTE: This is a much stricter check
+   * than is necessary: all <code>JdwpId</code>s have unique
+   * ids.)
+   */
+  public boolean equals (JdwpId id)
+  {
+    return ((id.getClass () == getClass ()) && (id.getId () == getId ()));
+  }
+
+  /**
+   * Returns size of this type (used by IDSizes)
+   */
+  public abstract int size ();
+
+  /**
+   * Writes the contents of this type to the <code>DataOutputStream</code>
+   * @param  outStream    the <code>DataOutputStream</code> to use
+   * @throws IOException  when an error occurs on the <code>OutputStream</code>
+   */
+  public abstract void write (DataOutputStream outStream)
+    throws IOException;
+
+  /**
+   * Writes the contents of this type to the output stream, preceded
+   * by a one-byte tag for tagged object IDs or type tag for
+   * reference type IDs.
+   *
+   * @param  outStream    the <code>DataOutputStream</code> to use
+   * @throws IOException  when an error occurs on the <code>OutputStream</code>
+   */
+  public void writeTagged (DataOutputStream outStream)
+    throws IOException
+  {
+    outStream.writeByte (_tag);
+    write (outStream);
+  }
+}