Files
libremetaverse/LibreMetaverse.LslTools/Tools/ParserShift.cs
2024-06-30 16:49:51 -05:00

85 lines
2.7 KiB
C#

/*
* Copyright (c) 2019-2024, Sjofn LLC
* 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.
* - Neither the name of the openmetaverse.co 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
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
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namespace LibreMetaverse.LslTools
{
public class ParserShift : ParserEntry
{
public ParseState m_next;
public ParserShift()
{
}
public ParserShift(ParserAction action, ParseState next)
: base(action)
{
this.m_next = next;
}
public override void Pass(ref ParseStackEntry top)
{
Parser yyps = top.yyps;
if (this.m_action == null)
{
yyps.Push(top);
top = new ParseStackEntry(yyps, this.m_next.m_state, yyps.NextSym());
}
else
{
yyps.Push(new ParseStackEntry(yyps, top.m_state, this.m_action.Action(yyps)));
top.m_state = this.m_next.m_state;
}
}
public override string str
{
get
{
if (this.m_next == null)
return "?? null shift";
return $"shift {(object)this.m_next.m_state}";
}
}
public new static object Serialise(object o, Serialiser s)
{
if (s == null)
return (object) new ParserShift();
ParserShift parserShift = (ParserShift) o;
if (s.Encode)
{
ParserEntry.Serialise((object) parserShift, s);
s.Serialise((object) parserShift.m_next);
return (object) null;
}
ParserEntry.Serialise((object) parserShift, s);
parserShift.m_next = (ParseState) s.Deserialise();
return (object) parserShift;
}
}
}