Mantis#1314. Thank you kindly, Kinoc for YieldProlog.

I have added everything *except* the patch to 
.../LSL/Compiler.cs. The Compiler.cs patch has a 
namespace issue. Lets make a second patch to close
the gap.

1 files changed, 71 insertions, 0 deletions

diff --git a/OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/PrologException.cs b/OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/PrologException.cs
new file mode 100644
index 0000000..ffb8ddc
--- /dev/null
+++ b/OpenSim/Region/ScriptEngine/DotNetEngine/Compiler/YieldProlog/PrologException.cs
@@ -0,0 +1,71 @@
+/*

+ * Copyright (C) 2007-2008, Jeff Thompson

+ * 

+ * All rights reserved.

+ * 

+ * Redistribution and use in source and binary forms, with or without 

+ * modification, are permitted provided that the following conditions are met:

+ * 

+ *     * Redistributions of source code must retain the above copyright 

+ *       notice, this list of conditions and the following disclaimer.

+ *     * Redistributions in binary form must reproduce the above copyright 

+ *       notice, this list of conditions and the following disclaimer in the 

+ *       documentation and/or other materials provided with the distribution.

+ *     * Neither the name of the copyright holder nor the names of its contributors 

+ *       may be used to endorse or promote products derived from this software 

+ *       without specific prior written permission.

+ * 

+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR

+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ */

+

+using System;

+

+namespace OpenSim.Region.ScriptEngine.DotNetEngine.Compiler.YieldProlog

+{

+    /// <summary>

+    /// A PrologException is used as the exception thrown by YP.throw(Term).

+    /// </summary>

+    public class PrologException : Exception

+    {

+        public readonly object _term;

+

+        /// <summary>

+        /// Create a PrologException with the given Term.  The printable exception message is the full Term.

+        /// </summary>

+        /// <param name="Term">the term of the exception</param>

+        /// </param>

+        public PrologException(object Term)

+            : base(YP.getValue(Term).ToString())

+        {

+            _term = YP.makeCopy(Term, new Variable.CopyStore());

+        }

+

+        /// <summary>

+        /// Create a PrologException where the Term is error(ErrorTerm, Message).

+        /// This uses YP.makeCopy to copy the ErrorTerm and Message so that they are valid after unbinding.

+        /// </summary>

+        /// <param name="ErrorTerm">the term of the exception</param>

+        /// <param name="Messsage">the message, converted to a string, to use as the printable exception message

+        /// </param>

+        public PrologException(object ErrorTerm, object Message)

+            : base(YP.getValue(Message).ToString())

+        {

+            _term = YP.makeCopy(new Functor2(Atom.a("error"), ErrorTerm, Message), new Variable.CopyStore());

+        }

+

+        public object Term

+        {

+            get { return _term; }

+        }

+    }

+}