private static bool FindMatchingCloseQuote(SnapshotPoint startPoint, out SnapshotSpan pairSpan)
{
pairSpan = new SnapshotSpan(startPoint, startPoint);
SnapshotSpan enclosingSpan = PkgDefTokenTagger.GetContinuedLines(pairSpan);
string lineText = enclosingSpan.GetText();
int posNameStart, posNameEnd, posValueStart, posValueEnd;
if (FindNameValueQuotes(out posNameStart, out posNameEnd, out posValueStart, out posValueEnd, ref lineText))
{
if (startPoint.Position == enclosingSpan.Start + posNameStart)
{
pairSpan = new SnapshotSpan(startPoint.Snapshot, enclosingSpan.Start.Position + posNameEnd, 1);
return(true);
}
if (startPoint.Position == enclosingSpan.Start + posValueStart)
{
pairSpan = new SnapshotSpan(startPoint.Snapshot, enclosingSpan.Start.Position + posValueEnd, 1);
return(true);
}
}
return(false);
}
private static bool FindMatchingCloseChar(SnapshotPoint startPoint, char open, char close, out SnapshotSpan pairSpan)
{
pairSpan = new SnapshotSpan(startPoint, startPoint);
SnapshotSpan enclosingSpan = PkgDefTokenTagger.GetContinuedLines(pairSpan);
string lineText = enclosingSpan.GetText();
// start after the open char
int offset = startPoint.Position - enclosingSpan.Start.Position + 1;
// walk the rest of the 'line'
while (offset < lineText.Length)
{
char currentChar = lineText[offset];
if (currentChar == close) // found the close character
{
pairSpan = new SnapshotSpan(startPoint.Snapshot, enclosingSpan.Start.Position + offset, 1);
return(true);
}
offset++;
}
return(false);
}
private static bool FindMatchingOpenChar(SnapshotPoint startPoint, char open, char close, out SnapshotSpan pairSpan)
{
pairSpan = new SnapshotSpan(startPoint, startPoint);
SnapshotSpan enclosingSpan = PkgDefTokenTagger.GetContinuedLines(pairSpan);
string lineText = enclosingSpan.GetText();
// start to the left of the close char
int offset = startPoint.Position - enclosingSpan.Start.Position - 1;
// should not happen, but if the offset is negative, we're done
if (offset < 0)
{
return(false);
}
// walk to the beginning of the 'line'
while (offset >= 0)
{
char currentChar = lineText[offset];
if (currentChar == open)
{
pairSpan = new SnapshotSpan(startPoint.Snapshot, enclosingSpan.Start.Position + offset, 1); //we just want the character itself
return(true);
}
offset--;
}
return(false);
}
private static bool FindNameValueQuotes(out int posNameStart, out int posNameEnd, out int posValueStart, out int posValueEnd, ref string text)
{
posNameStart = -1;
posNameEnd = -1;
posValueStart = -1;
posValueEnd = -1;
Group textAfterWhiteSpace = PkgDefTokenTagger.SkipWhiteSpace(text);
int posEquals = -1;
if (textAfterWhiteSpace.Value[0] == '@')
{
posEquals = text.IndexOf('=', textAfterWhiteSpace.Index + 1);
}
else if (textAfterWhiteSpace.Value[0] == '"')
{
posNameStart = textAfterWhiteSpace.Index;
posNameEnd = text.IndexOf('"', posNameStart + 1);
if (posNameEnd > posNameStart)
{
posEquals = text.IndexOf('=', posNameEnd + 1);
}
}
if (posEquals > -1)
{
Group textAfterEquals = PkgDefTokenTagger.SkipWhiteSpace(text.Substring(posEquals + 1));
if (textAfterEquals != null)
{
int posValue = posEquals + textAfterEquals.Index + 1;
if (textAfterEquals.Value.StartsWith(PkgDefTokenStrings.StringExpandSzPrefix))
{
posValue += PkgDefTokenStrings.StringExpandSzPrefix.Length - 1; // remove one char pos for "
}
if (text[posValue] == '"')
{
int posLastQuote = text.LastIndexOf('"');
if (posLastQuote > posValue)
{
posValueStart = posValue;
posValueEnd = posLastQuote;
}
}
}
}
return((posNameStart > -1) || (posValueStart > -1));
}
/// <summary>
/// Find all of the outline sections in the snapshot
/// </summary>
private static List <Region> ParseOutlineSections(ITextSnapshot newSnapshot)
{
List <Region> newRegions = new List <Region>();
Region currentRegion = null;
int currentRegionLineCount = 0;
string lineSep = "";
SnapshotSpan currentFullSpan = new SnapshotSpan();
foreach (ITextSnapshotLine line in newSnapshot.Lines)
{
if (!currentFullSpan.IsEmpty && currentFullSpan.Contains(line.Start))
{
continue; // already processed, go get next one
}
currentFullSpan = PkgDefTokenTagger.GetContinuedLines(new SnapshotSpan(line.Start, line.End));
int currentFirstLine = currentFullSpan.Start.GetContainingLine().LineNumber;
int currentEndLine = currentFullSpan.End.GetContainingLine().LineNumber;
string text = currentFullSpan.GetText();
MatchCollection matches = matchKey.Matches(text);
if ((matches.Count == 1) && (matches[0].Groups.Count == 2))
{
// close out the previous Region
if (currentRegion != null)
{
newRegions.Add(currentRegion);
}
// and start a new one
currentRegionLineCount = 0;
lineSep = "";
currentRegion = new Region()
{
StartLine = currentEndLine,
StartOffset = currentFullSpan.End.GetContainingLine().Length,
EndLine = currentEndLine,
Label = ellipsis,
HoverText = "" // don't include the key in hover text
};
}
else if ((currentRegion != null) && (text.Trim() != ""))
{
// accumulate non-blank lines for the hover text
if (currentRegionLineCount < MaxHiddenLines)
{
currentRegion.HoverText += lineSep;
currentRegion.HoverText += text;
currentRegionLineCount += currentEndLine - currentFirstLine + 1;
lineSep = line.GetLineBreakText();
}
currentRegion.EndLine = currentEndLine;
}
}
// close out the final Region
if (currentRegion != null)
{
newRegions.Add(currentRegion);
currentRegion = null;
}
return(newRegions);
}