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/*
* 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.Shared.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; }
}
}
}
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