public void AddLine(string Text, LineIdentifier LineId)
{
var text = this.ScrubNewLineFromEnd(Text);
// the start pos of the line.
int startPos = _sb.Length;
// add to the stream.
_sb.Append(text + Environment.NewLine);
_Stream = null;
// end pos of the line.
int endPos = _sb.Length - 1;
// LineLocation stores the LineId of the line and its position within the stream.
LineLocation loc = new LineLocation(LineId, startPos, endPos);
// ScanLine stores the text of the line and its LineLocation.
ScanLine sl = new ScanLine(text, loc);
// list of lines.
_Lines.Add(sl);
// update the highest assigned lineid.
if (LineId.IntValue.Value > _HighLineId)
{
_HighLineId = LineId.IntValue.Value;
}
}
public static XElement ToXElement(this LineIdentifier LineId, XName ElemName)
{
XElement xelem = null;
if (LineId == null)
{
xelem = new XElement(ElemName, null);
}
else if (LineId.IntValue != null)
{
xelem = new XElement(ElemName,
new XElement("IntValue", LineId.IntValue.Value.ToString()));
}
else if (LineId.GuidValue != null)
{
xelem = new XElement(ElemName,
new XElement("GuidValue", LineId.GuidValue.Value.ToString()));
}
else
{
xelem = new XElement(ElemName, null);
}
return(xelem);
}
private Tuple <LineLocation, int> FindLineLocation(LineIdentifier LineId, int StartIx)
{
LineLocation found = null;
int ix = StartIx;
int nbrLines = this.Lines.Count;
while (true)
{
if (ix >= nbrLines)
{
found = null;
break;
}
ScanLine scanLine = this.Lines[ix];
if (scanLine.LineId.Equals(LineId))
{
found = scanLine.Location;
break;
}
// advance to the next line.
ix += 1;
}
return(new Tuple <LineLocation, int>(found, ix));
}
public ScanLine FindLine(LineIdentifier LineId)
{
var rv = FindLineLocation(LineId, 0);
int ix = rv.Item2;
ScanLine line = this.Lines[ix];
return(line);
}
public static bool IsEqual(this LineIdentifier LineId, LineIdentifier OtherLineId)
{
if ((LineId == null) && (OtherLineId == null))
{
return(true);
}
else if (LineId == null)
{
return(false);
}
else if (OtherLineId == null)
{
return(false);
}
else
{
return(LineId.Equals(OtherLineId));
}
}
public LineLocation FindLineLocation(LineIdentifier LineId)
{
LineLocation found = null;
int foundIx = 0;
// start the search from last found line index.
int ix = 0;
if (this.CurrentLineIndex != null)
{
ix = this.CurrentLineIndex.Value;
}
// search from starting line forward.
{
var rv = this.FindLineLocation(LineId, ix);
found = rv.Item1;
foundIx = rv.Item2;
}
// not found. seach from line 0 to the end.
if (found == null)
{
var rv = this.FindLineLocation(LineId, 0);
found = rv.Item1;
foundIx = rv.Item2;
}
// store the last found line index.
if (found != null)
{
this.CurrentLineIndex = foundIx;
}
// error if not found.
if (found == null)
{
throw new ApplicationException("Line not found");
}
return(found);
}
public LineLocation FindLineLocation(LineIdentifier LineId)
{
LineLocation found = null;
foreach (var loc in this)
{
if (loc.LineId.Equals(LineId))
{
found = loc;
break;
}
}
if (found == null)
{
throw new ApplicationException("Line not found");
}
return(found);
}
public static LineIdentifier LineIdentifierOrDefault(
this XElement Elem, XNamespace Namespace, LineIdentifier Default = null)
{
if (Elem == null)
{
return(Default);
}
else if (Elem.Value.Trim().Length == 0)
{
return(Default);
}
else
{
Guid? guidValue = Elem.Element(Namespace + "GuidValue").GuidOrDefault(null);
int? intValue = Elem.Element(Namespace + "IntValue").IntOrDefault(null);
LineIdentifier lineId = new LineIdentifier()
{
GuidValue = guidValue,
IntValue = intValue
};
return(lineId);
}
}
public LineLocation(LineIdentifier LineId, int StartIndex, int EndIndex)
{
this.LineId = LineId;
this.StartIndex = StartIndex;
this.EndIndex = EndIndex;
}
public TextLocation(LineIdentifier LineId, int ColumnIndex)
{
this.LineId = LineId;
this.ColumnIndex = ColumnIndex;
}