public virtual int Mark()
{
if (this.markers == null)
{
this.markers = new List <CharStreamState>();
this.markers.Add(null);
}
this.markDepth++;
CharStreamState charStreamState = null;
if (this.markDepth >= this.markers.Count)
{
charStreamState = new CharStreamState();
this.markers.Add(charStreamState);
}
else
{
charStreamState = this.markers[this.markDepth];
}
charStreamState.p = this.p;
charStreamState.line = this.line;
charStreamState.charPositionInLine = this.charPositionInLine;
this.lastMarker = this.markDepth;
return(this.markDepth);
}
public virtual void Rewind(int m)
{
if (m < 0)
{
throw new ArgumentOutOfRangeException();
}
CharStreamState charStreamState = this.markers[m];
this.Seek(charStreamState.p);
this.line = charStreamState.line;
this.charPositionInLine = charStreamState.charPositionInLine;
this.Release(m);
}