public IEnumerable <ITagSpan <TextMarkerTag> > GetTags(NormalizedSnapshotSpanCollection spans)
{
DateTime oStart, oEnd;
TimeSpan timeSpan;
oStart = DateTime.Now;
Debug("Start get brackets: " + oStart.ToString("hh:mm:ss.fff"));
if (spans.Count == 0) //there is no content in the buffer
{
yield break;
}
if (CurrentChar == null || SourceBuffer == null)
{
yield break;
}
//don't do anything if the current SnapshotPoint is not initialized or at the end of the buffer
if (!CurrentChar.HasValue || CurrentChar.Value.Position >= CurrentChar.Value.Snapshot.Length)
{
yield break;
}
//hold on to a snapshot of the current character
SnapshotPoint ssp = CurrentChar.Value;
//if the requested snapshot isn't the same as the one the brace is on, translate our spans to the expected snapshot
if (spans[0].Snapshot != ssp.Snapshot)
{
ssp = ssp.TranslateTo(spans[0].Snapshot, PointTrackingMode.Positive);
}
//get the current char and the previous char
char currentText = '\0';
char lastText = '\0';
SnapshotSpan pairSpan = new SnapshotSpan();
SnapshotPoint lastChar = new SnapshotPoint();
try
{
currentText = ssp.GetChar();
lastChar = ssp == 0 ? ssp : ssp - 1; //if ssp is 0 (beginning of buffer), don't move it back
lastText = lastChar.GetChar();
}
catch (Exception)
{
yield break;
}
// use the tokens stored in the buffer properties
XSharpTokens xTokens = null;
IList <IToken> tokens = null;
int offset = 0;
if (m_braceList.ContainsKey(currentText) || (m_braceList.ContainsValue(lastText))) //FM#081219 #1 - Only need to get the tokens if either of these conditions is true
{
if (SourceBuffer.Properties != null && SourceBuffer.Properties.ContainsProperty(typeof(XSharpTokens)))
{
xTokens = SourceBuffer.Properties.GetProperty <XSharpTokens>(typeof(XSharpTokens));
if (xTokens == null || xTokens.TokenStream == null || xTokens.SnapShot == null)
{
yield break;
}
tokens = xTokens.TokenStream.GetTokens();
if (tokens == null)
{
yield break;
}
if (xTokens.SnapShot.Version != ssp.Snapshot.Version)
{
// get source from the start of the file until the current entity
var xfile = SourceBuffer.GetFile();
var member = XSharpTokenTools.FindMemberAtPosition(ssp.Position, xfile);
if (member != null)
{
try
{
var sourceWalker = new SourceWalker(xfile);
string text = ssp.Snapshot.GetText();
text = text.Substring(member.Interval.Start, member.Interval.Width); //FM#081219 #2 - We are in a 'member'. For brace matching we should only ever need to look to the end of this member
offset = member.Interval.Start;
Debug("Start sourceWalker.Lex: " + DateTime.Now.ToString("hh:mm:ss.fff"));
var stream = (BufferedTokenStream)sourceWalker.Lex(text);
Debug("End sourceWalker.Lex: " + DateTime.Now.ToString("hh:mm:ss.fff"));
tokens = stream.GetTokens();
}
catch (Exception e)
{
// if it crashes, that might be because the snapshot used for the Lex/Parse is no more
// so, we may have a too much difference
// we do not break but simply use the 'old' tokens
System.Diagnostics.Debug.WriteLine(e.Message);
}
}
}
}
}
// First, try to match Simple chars
if (m_braceList.ContainsKey(currentText)) //the key is the open brace
{
char closeChar;
m_braceList.TryGetValue(currentText, out closeChar);
if (BraceMatchingTagger.FindMatchingCloseChar(ssp, currentText, closeChar, out pairSpan, tokens, offset) == true)
{
yield return(new TagSpan <TextMarkerTag>(new SnapshotSpan(ssp, 1), new TextMarkerTag("blue")));
yield return(new TagSpan <TextMarkerTag>(pairSpan, new TextMarkerTag("blue")));
}
}
else if (m_braceList.ContainsValue(lastText)) //the value is the close brace, which is the *previous* character
{
var open = from n in m_braceList
where n.Value.Equals(lastText)
select n.Key;
if (BraceMatchingTagger.FindMatchingOpenChar(lastChar, (char)open.ElementAt <char>(0), lastText, out pairSpan, tokens, offset) == true)
{
yield return(new TagSpan <TextMarkerTag>(new SnapshotSpan(lastChar, 1), new TextMarkerTag("blue")));
yield return(new TagSpan <TextMarkerTag>(pairSpan, new TextMarkerTag("blue")));
}
}
else
{
// Second, try to Match Keywords
// Try to retrieve an already parsed list of Tags
XSharpClassifier xsClassifier = null;
if (SourceBuffer.Properties.ContainsProperty(typeof(XSharpClassifier)))
{
xsClassifier = SourceBuffer.Properties[typeof(XSharpClassifier)] as XSharpClassifier;
}
if (xsClassifier != null)
{
ITextSnapshot snapshot = xsClassifier.Snapshot;
if (snapshot.Version != ssp.Snapshot.Version)
{
yield break;
}
SnapshotSpan Span = new SnapshotSpan(snapshot, 0, snapshot.Length);
var classifications = xsClassifier.GetTags();
// We cannot use SortedList, because we may have several Classification that start at the same position
List <ClassificationSpan> sortedTags = new List <ClassificationSpan>();
foreach (var tag in classifications)
{
// Only keep the Brace matching Tags
if ((tag.ClassificationType.IsOfType(ColorizerConstants.XSharpBraceOpenFormat)) ||
(tag.ClassificationType.IsOfType(ColorizerConstants.XSharpBraceCloseFormat)))
{
sortedTags.Add(tag);
}
}
sortedTags.Sort((a, b) => a.Span.Start.Position.CompareTo(b.Span.Start.Position) * 1000 + string.Compare(a.ClassificationType.Classification, b.ClassificationType.Classification));
//
var tags = sortedTags.Where(x => ssp.Position >= x.Span.Start.Position && ssp.Position <= x.Span.End.Position);
foreach (var currentTag in tags)
{
var index = sortedTags.IndexOf(currentTag);
if (currentTag.ClassificationType.IsOfType(ColorizerConstants.XSharpBraceOpenFormat))
{
if (FindMatchingCloseTag(sortedTags, index, snapshot, out pairSpan))
{
var span = currentTag.Span;
yield return(new TagSpan <TextMarkerTag>(span, new TextMarkerTag("bracehighlight")));
yield return(new TagSpan <TextMarkerTag>(pairSpan, new TextMarkerTag("bracehighlight")));
}
}
else
{
if (FindMatchingOpenTag(sortedTags, index, snapshot, out pairSpan))
{
var span = currentTag.Span;
yield return(new TagSpan <TextMarkerTag>(pairSpan, new TextMarkerTag("bracehighlight")));
yield return(new TagSpan <TextMarkerTag>(span, new TextMarkerTag("bracehighlight")));
}
}
}
}
}
oEnd = DateTime.Now;
timeSpan = oEnd - oStart;
Debug("Finished get brackets: " + oEnd.ToString("hh:mm:ss.fff"));
Debug("Finished get brackets - total ms: " + timeSpan.TotalMilliseconds.ToString());
}
public IEnumerable <ITagSpan <TextMarkerTag> > GetTags(NormalizedSnapshotSpanCollection spans)
{
if (spans.Count == 0) //there is no content in the buffer
{
yield break;
}
//don't do anything if the current SnapshotPoint is not initialized or at the end of the buffer
if (!CurrentChar.HasValue || CurrentChar.Value.Position >= CurrentChar.Value.Snapshot.Length)
{
yield break;
}
//hold on to a snapshot of the current character
SnapshotPoint currentChar = CurrentChar.Value;
//if the requested snapshot isn't the same as the one the brace is on, translate our spans to the expected snapshot
if (spans[0].Snapshot != currentChar.Snapshot)
{
//currentChar = currentChar.TranslateTo(spans[0].Snapshot, PointTrackingMode.Positive);
yield break;
}
//get the current char and the previous char
char currentText = '\0';
char lastText = '\0';
SnapshotSpan pairSpan = new SnapshotSpan();
SnapshotPoint lastChar = new SnapshotPoint();
try
{
currentText = currentChar.GetChar();
lastChar = currentChar == 0 ? currentChar : currentChar - 1; //if currentChar is 0 (beginning of buffer), don't move it back
lastText = lastChar.GetChar();
}
catch (Exception)
{
}
// use the tokens stored in the buffer properties
XSharpTokens xTokens = null;
IList <IToken> tokens = null;
int offset = 0;
if (SourceBuffer.Properties.ContainsProperty(typeof(XSharpTokens)))
{
xTokens = SourceBuffer.Properties.GetProperty <XSharpTokens>(typeof(XSharpTokens));
if (xTokens.SnapShot.Version != currentChar.Snapshot.Version)
{
// get source from the start of the file until the current entity
var xfile = SourceBuffer.GetFile();
var member = XSharpTokenTools.FindMemberAtPosition(currentChar.Position, xfile);
if (member != null)
{
try
{
offset = member.Interval.Start;
var length = member.Interval.Width;
if (offset + length > currentChar.Snapshot.Length)
{
length = currentChar.Snapshot.Length - offset;
}
//
string text = currentChar.Snapshot.GetText(offset, length);
var reporter = new ErrorIgnorer();
ITokenStream tokenStream;
XSharpParseOptions parseoptions;
var prj = xfile.Project.ProjectNode;
parseoptions = prj.ParseOptions;
bool ok = XSharp.Parser.VsParser.Lex(text, xfile.FullPath, parseoptions, reporter, out tokenStream);
var bstream = tokenStream as BufferedTokenStream;
tokens = bstream.GetTokens();
}
catch
{
// if it crashes, that might be because the snapshot used for the Lex/Parse is no more
// so, we may have a too much difference
yield break;
}
}
}
else
{
tokens = xTokens.TokenStream.GetTokens();
}
}
// First, try to match Simple chars
if (m_braceList.ContainsKey(currentText)) //the key is the open brace
{
char closeChar;
m_braceList.TryGetValue(currentText, out closeChar);
if (BraceMatchingTagger.FindMatchingCloseChar(currentChar, currentText, closeChar, out pairSpan, tokens, offset) == true)
{
yield return(new TagSpan <TextMarkerTag>(new SnapshotSpan(currentChar, 1), new TextMarkerTag("blue")));
yield return(new TagSpan <TextMarkerTag>(pairSpan, new TextMarkerTag("blue")));
}
}
else if (m_braceList.ContainsValue(lastText)) //the value is the close brace, which is the *previous* character
{
var open = from n in m_braceList
where n.Value.Equals(lastText)
select n.Key;
if (BraceMatchingTagger.FindMatchingOpenChar(lastChar, (char)open.ElementAt <char>(0), lastText, out pairSpan, tokens, offset) == true)
{
yield return(new TagSpan <TextMarkerTag>(new SnapshotSpan(lastChar, 1), new TextMarkerTag("blue")));
yield return(new TagSpan <TextMarkerTag>(pairSpan, new TextMarkerTag("blue")));
}
}
else
{
// Second, try to Match Keywords
// Try to retrieve an already parsed list of Tags
XSharpClassifier xsClassifier = null;
if (SourceBuffer.Properties.ContainsProperty(typeof(XSharpClassifier)))
{
xsClassifier = SourceBuffer.Properties[typeof(XSharpClassifier)] as XSharpClassifier;
}
if (xsClassifier != null)
{
ITextSnapshot snapshot = xsClassifier.Snapshot;
if (snapshot.Version != currentChar.Snapshot.Version)
{
yield break;
}
SnapshotSpan Span = new SnapshotSpan(snapshot, 0, snapshot.Length);
var classifications = xsClassifier.GetTags();
// We cannot use SortedList, because we may have several Classification that start at the same position
List <ClassificationSpan> sortedTags = new List <ClassificationSpan>();
foreach (var tag in classifications)
{
// Only keep the Brace matching Tags
if ((tag.ClassificationType.IsOfType(ColorizerConstants.XSharpBraceOpenFormat)) ||
(tag.ClassificationType.IsOfType(ColorizerConstants.XSharpBraceCloseFormat)))
{
sortedTags.Add(tag);
}
}
sortedTags.Sort((a, b) => a.Span.Start.Position.CompareTo(b.Span.Start.Position));
//
int indexTag = sortedTags.FindIndex(x => currentChar.Position >= x.Span.Start.Position && currentChar.Position <= x.Span.End.Position);
if (indexTag != -1)
{
var currentTag = sortedTags[indexTag];
if (currentTag.ClassificationType.IsOfType(ColorizerConstants.XSharpBraceOpenFormat))
{
if (FindMatchingCloseTag(sortedTags, indexTag, snapshot, out pairSpan))
{
var span = currentTag.Span;
yield return(new TagSpan <TextMarkerTag>(span, new TextMarkerTag("bracehighlight")));
yield return(new TagSpan <TextMarkerTag>(pairSpan, new TextMarkerTag("bracehighlight")));
}
}
else
{
if (FindMatchingOpenTag(sortedTags, indexTag, snapshot, out pairSpan))
{
var span = currentTag.Span;
yield return(new TagSpan <TextMarkerTag>(pairSpan, new TextMarkerTag("bracehighlight")));
yield return(new TagSpan <TextMarkerTag>(span, new TextMarkerTag("bracehighlight")));
}
}
}
}
}
}