protected override void Modify(ITextEdit edit, ITextSnapshotLine line)
{
if (line.GetText().StartsWith("#"))
{
edit.Delete(line.Start, 1);
}
}
//=====================================================================
/// <summary>
/// Constructor
/// </summary>
/// <param name="line">The line snapshot</param>
/// <param name="state">The starting state</param>
/// <param name="naturalTextSpans">The collection of natural text spans</param>
public LineProgress(ITextSnapshotLine line, State state, List<SnapshotSpan> naturalTextSpans)
{
_snapshotLine = line;
_lineText = line.GetText();
_linePosition = 0;
_naturalTextSpans = naturalTextSpans;
this.State = state;
}
internal static bool CommentLine(ITextSnapshotLine line) {
string lineText = line.GetText();
if (!string.IsNullOrWhiteSpace(lineText)) {
int leadingWsLength = lineText.Length - lineText.TrimStart().Length;
line.Snapshot.TextBuffer.Insert(line.Start + leadingWsLength, "#");
return true;
}
return false;
}
internal static bool UncommentLine(ITextSnapshotLine line) {
string lineText = line.GetText();
if (!string.IsNullOrWhiteSpace(lineText)) {
int leadingWsLength = lineText.Length - lineText.TrimStart().Length;
if (leadingWsLength < lineText.Length) {
if (lineText[leadingWsLength] == '#') {
line.Snapshot.TextBuffer.Delete(new Span(line.Start + leadingWsLength, 1));
return true;
}
}
}
return false;
}
private static bool IsPropertyValueEligible(ITextSnapshotLine line, int position)
{
string text = line.GetText();
int diff = text.Length - text.TrimEnd().Length;
if (line.End.Position - diff > position)
{
return(false);
}
if (text.IndexOf(';') > -1)
{
return(false);
}
return(true);
}
private static void DeleteFirstCommentChar(ITextEdit edit, ITextSnapshotLine curLine)
{
var text = curLine.GetText();
for (int j = 0; j < text.Length - 1; j++)
{
if (!Char.IsWhiteSpace(text[j]))
{
if (text[j] == '/' && text[j + 1] == '/')
{
edit.Delete(curLine.Start.Position + j, 2);
}
break;
}
}
}
/// <summary>
/// Returns the last non-whitespace position on the given line, or null if
/// the line is empty or contains only whitespace.
/// </summary>
public static int?GetLastNonWhitespacePosition(this ITextSnapshotLine line)
{
Contract.ThrowIfNull(line);
int startPosition = line.Start;
var text = line.GetText();
for (int i = text.Length - 1; i >= 0; i--)
{
if (!char.IsWhiteSpace(text[i]))
{
return(startPosition + i);
}
}
return(null);
}
public static bool HasReservedBlockKeywords(ITextSnapshotLine start, params string[] nativelySupportedTokens)
{
try
{
var tagger = start.Snapshot.TextBuffer.Properties.GetProperty <ITagger <ClassificationTag> >(jsTaggerType);
var classifications = tagger.GetTags(new NormalizedSnapshotSpanCollection(start.Extent));
return(classifications.Any(tag => !tag.Tag.ClassificationType.IsOfType("comment") &&
tag.Tag.ClassificationType.IsOfType("keyword") &&
nativelySupportedTokens.Contains(tag.Span.GetText())));
}
catch
{
return(start.GetText().Trim().Split(PunctuationCharacters)
.Any(word => nativelySupportedTokens.Contains(word)));
}
}
private IList <IToken> getTokensInLine(ITextSnapshotLine line)
{
IList <IToken> tokens = new List <IToken>();
ITextBuffer textBuffer = line.Snapshot.TextBuffer;
// Already been lexed ?
if (getBufferedTokens(out var xTokens, textBuffer))
{
var allTokens = xTokens.TokenStream.GetTokens();
if (allTokens != null)
{
if (xTokens.SnapShot.Version == textBuffer.CurrentSnapshot.Version)
{
// Ok, use it
int startIndex = -1;
// Move to the line position
for (int i = 0; i < allTokens.Count; i++)
{
if (allTokens[i].StartIndex >= line.Start.Position)
{
startIndex = i;
break;
}
}
if (startIndex > -1)
{
// Move to the end of line
int currentLine = allTokens[startIndex].Line;
do
{
tokens.Add(allTokens[startIndex]);
startIndex++;
} while ((startIndex < allTokens.Count) && (currentLine == allTokens[startIndex].Line));
return(tokens);
}
}
}
}
// Ok, do it now
var text = line.GetText();
tokens = getTokens(text);
return(tokens);
//
}
public async Task SendToReplTest()
{
string content = "x <- 1\r\ny <- 2\r\n";
var editorBuffer = new TextBufferMock(content, RContentTypeDefinition.ContentType);
var tv = new TextViewMock(editorBuffer);
var commandFactory = new VsRCommandFactory(_workflowProvider);
var commands = UIThreadHelper.Instance.Invoke(() => commandFactory.GetCommands(tv, editorBuffer));
await _workflow.RSession.HostStarted.Should().BeCompletedAsync();
await UIThreadHelper.Instance.Invoke(() => _workflow.GetOrCreateVisualComponentAsync());
_workflow.ActiveWindow.Should().NotBeNull();
var command = commands.OfType <SendToReplCommand>()
.Should().ContainSingle().Which;
var replBuffer = _workflow.ActiveWindow.InteractiveWindow.CurrentLanguageBuffer;
_workflow.ActiveWindow.Container.IsOnScreen.Should().BeFalse();
Guid group = VSConstants.VsStd11;
int id = (int)VSConstants.VSStd11CmdID.ExecuteLineInInteractive;
object o = new object();
command.Status(group, id).Should().Be(CommandStatus.SupportedAndEnabled);
command.Invoke(group, id, null, ref o);
replBuffer.CurrentSnapshot.GetText().Trim().Should().Be("x <- 1");
int caretPos = tv.Caret.Position.BufferPosition.Position;
int lineNum = editorBuffer.CurrentSnapshot.GetLineNumberFromPosition(caretPos);
lineNum.Should().Be(1);
tv.Selection.Select(new SnapshotSpan(editorBuffer.CurrentSnapshot, new Span(0, 1)), false);
command.Invoke(group, id, null, ref o);
ITextSnapshotLine line = replBuffer.CurrentSnapshot.GetLineFromLineNumber(1);
line.GetText().Trim().Should().Be("x");
_workflow.ActiveWindow.Dispose();
}
private SnapshotPoint GetCaretPositionFromCellPosition(ITextSnapshotLine line, int cellPosition)
{
var lineText = line.GetText();
var linePosition = 0;
while (cellPosition > 0 && linePosition >= 0)
{
linePosition = lineText.IndexOf('|', linePosition) + 1;
cellPosition--;
}
if (linePosition < 0)
{
return(line.End);
}
return(line.Start + linePosition);
}
/// <summary>
/// Determines whether the specified line is empty or contains whitespace only.
/// </summary>
public static bool IsEmptyOrWhitespace(this ITextSnapshotLine line)
{
if (line == null)
{
return(true);
}
var text = line.GetText();
for (int i = 0; i < text.Length; i++)
{
if (!char.IsWhiteSpace(text[i]))
{
return(false);
}
}
return(true);
}
private int?DoBlockIndent(ITextSnapshotLine line)
{
ITextSnapshotLine previousLine = null;
for (int lineNumber = line.LineNumber - 1; lineNumber >= 0; --lineNumber)
{
previousLine = line.Snapshot.GetLineFromLineNumber(lineNumber);
string text = previousLine.GetText();
if (text.Length > 0)
{
return(GetLeadingWhiteSpace(text));
}
}
return(null);
}
private StructureTag CreateTag(Span outline)
{
ITextSnapshotLine line = _buffer.CurrentSnapshot.GetLineFromPosition(outline.Start);
var firstLineText = line.GetText().Trim();
return(new StructureTag(
_buffer.CurrentSnapshot,
outliningSpan: outline,
headerSpan: line.Extent,
guideLineSpan: outline,
guideLineHorizontalAnchor: outline.Start,
type: PredefinedStructureTagTypes.Nonstructural,
isCollapsible: true,
collapsedForm: _isShortCollapsedForm ? _shortCollapsedForm : firstLineText,
collapsedHintForm: firstLineText,
isDefaultCollapsed: true
));
}
/// <summary>
/// Returns the first non-whitespace position on the given line as an offset
/// from the start of the line, or null if the line is empty or contains only
/// whitespace.
/// </summary>
public static int?GetFirstNonWhitespaceOffset(this ITextSnapshotLine line)
{
if (line == null)
{
return(null);
}
var text = line.GetText();
for (int i = 0; i < text.Length; i++)
{
if (!char.IsWhiteSpace(text[i]))
{
return(i);
}
}
return(null);
}
/// <summary>
/// Gets the index of the first non-whitespace character on a line, or the length of the line if the line is
/// empty or only contains whitespace.
/// </summary>
/// <param name="line">The line to examine.</param>
/// <returns>
/// <para>The index of the first non-whitespace character on a line.</para>
/// <para>-or-</para>
/// <para>The length of the line if the line is empty or only contains whitespace.</para>
/// </returns>
/// <exception cref="ArgumentNullException">If <paramref name="line"/> is <see langword="null"/>.</exception>
protected static int ScanToNonWhitespaceChar(ITextSnapshotLine line)
{
if (line == null)
{
throw new ArgumentNullException(nameof(line));
}
string text = line.GetText();
int len = text.Length;
int i = 0;
while (i < len && char.IsWhiteSpace(text[i]))
{
i++;
}
return(i);
}
/// <summary>
/// return insertion point for the ending string
/// </summary>
private static int?GetInsertionPositionForEndingString(
Document document,
ITextSnapshotLine line,
CancellationToken cancellationToken
)
{
var root = document.GetRequiredSyntaxRootSynchronously(cancellationToken);
var text = root.SyntaxTree.GetText(cancellationToken);
var syntaxFacts = document.GetRequiredLanguageService <ISyntaxFactsService>();
// find last token on the line
var token = syntaxFacts.FindTokenOnLeftOfPosition(root, line.End);
if (token.RawKind == 0)
{
return(null);
}
// bug # 16770
// don't do anything if token is multiline token such as verbatim string
if (line.End < token.Span.End)
{
return(null);
}
// if there is only whitespace, token doesn't need to be on same line
if (
string.IsNullOrWhiteSpace(
text.ToString(TextSpan.FromBounds(token.Span.End, line.End))
)
)
{
return(line.End);
}
// if token is on different line than caret but caret line is empty, we insert ending point at the end of the line
if (text.Lines.IndexOf(token.Span.End) != text.Lines.IndexOf(line.End))
{
return(string.IsNullOrWhiteSpace(line.GetText()) ? (int?)line.End : null);
}
return(token.Span.End);
}
private static IKeywordScopeStatement GetFormatScope(ITextView textView, ITextBuffer textBuffer, AstRoot ast)
{
SnapshotPoint?caret = REditorDocument.MapCaretPositionFromView(textView);
if (caret.HasValue)
{
try {
int lineNumber = textBuffer.CurrentSnapshot.GetLineNumberFromPosition(caret.Value.Position);
ITextSnapshotLine line = textBuffer.CurrentSnapshot.GetLineFromLineNumber(lineNumber);
string lineText = line.GetText();
if (lineText.TrimEnd().EndsWith("}", StringComparison.Ordinal))
{
IKeywordScopeStatement scopeStatement = ast.GetNodeOfTypeFromPosition <IKeywordScopeStatement>(caret.Value);
return(scopeStatement);
}
} catch (Exception) { }
}
return(null);
}
void ICompletionSource.AugmentCompletionSession(ICompletionSession session, IList <CompletionSet> completionSets)
{
//get tracking span
ITrackingSpan trackingSpan = FindTokenSpanAtPosition(session.GetTriggerPoint(_textBuffer), session);
//find current indent
ITextSnapshot snapshot = session.TextView.TextSnapshot;
SnapshotPoint currentPoint = trackingSpan.GetStartPoint(snapshot);
ITextSnapshotLine snapshotLine = snapshot.GetLineFromPosition(currentPoint);
string wordText = trackingSpan.GetText(snapshot);
string lineText = snapshotLine.GetText();
int lineStartPos = snapshotLine.Start.Position;
int lineEndPos = snapshotLine.End.Position;
int currentPos = currentPoint.Position;
int indent = currentPos - lineStartPos;
if (wordText == ".")
{
indent++;
}
//build completion list
List <Completion> completionList = new List <Completion>();
//insert snippets
foreach (Snippet snippet in Session.Current.Settings.Snippets)
{
completionList.Add(new SnippetCompletion(snippet, indent));
}
//add completion set if it contains any entries
if (completionList.Count > 0)
{
completionSets.Add(new CompletionSet(
"Snippets", //the non-localized title of the tab
"Snippets", //the display title of the tab
trackingSpan,
completionList,
null));
}
}
internal static bool UncommentLine(ITextSnapshotLine line)
{
var lineText = line.GetText();
if (!string.IsNullOrWhiteSpace(lineText))
{
int leadingWsLength = lineText.Length - lineText.TrimStart().Length;
if (leadingWsLength < lineText.Length)
{
if (lineText[leadingWsLength] == '#')
{
line.Snapshot.TextBuffer.Delete(new Span(line.Start + leadingWsLength, 1));
return(true);
}
}
}
return(false);
}
/// <summary>
/// Tries to move region start point up to get C#-like outlining
///
/// for (var k in obj)
/// { -- from here
///
/// for (var k in obj) -- to here
/// {
/// </summary>
private void ExtendStartPoint()
{
//some are not extended
if (!Complete ||
StartLine.LineNumber == EndLine.LineNumber ||
!string.IsNullOrWhiteSpace(TextBefore))
{
return;
}
//how much can we move region start
int upperLimit = 0;
if (this.Parent != null)
{
int childPosition = Parent.Children.IndexOf(this);
if (childPosition == 0)
{
//this region is first child of its parent
//we can go until the parent's start
upperLimit = Parent.RegionType != TextRegionType.None ? Parent.StartLine.LineNumber + 1 : 0;
}
else
{
//there is previous child
//we can go until its end
TextRegion prevRegion = Parent.Children[childPosition - 1];
upperLimit = prevRegion.EndLine.LineNumber + (prevRegion.EndLine.LineNumber == prevRegion.StartLine.LineNumber ? 0 : 1);
}
}
//now looking up to calculated upper limit for non-empty line
for (int i = StartLine.LineNumber - 1; i >= upperLimit; i--)
{
ITextSnapshotLine line = StartPoint.Snapshot.GetLineFromLineNumber(i);
if (!string.IsNullOrWhiteSpace(line.GetText()))
{
//found such line, placing region start at its end
StartPoint = line.End;
return;
}
}
}
public IEnumerable <ITagSpan <Visual64TassTokenTag> > GetTags(NormalizedSnapshotSpanCollection spans)
{
var tokenizer = new Tokenizer();
foreach (SnapshotSpan currentSpan in spans)
{
ITextSnapshotLine containingLine = currentSpan.Start.GetContainingLine();
int lineStartPos = containingLine.Start.Position;
foreach (var token in tokenizer.Tokenize(containingLine.GetText()))
{
var tokenSpan = new SnapshotSpan(currentSpan.Snapshot, new Span(lineStartPos + token.StartPosition, token.Value.Length));
if (tokenSpan.IntersectsWith(currentSpan))
{
yield return(new TagSpan <Visual64TassTokenTag>(tokenSpan, new Visual64TassTokenTag(token)));
}
}
}
}
private static void TrimTrailingWhitespace(IWpfTextView view)
{
ITextSnapshot snapshot = view.TextSnapshot;
var lineCount = snapshot.LineCount;
if (lineCount == 0)
{
return;
}
using (var edit = snapshot.TextBuffer.CreateEdit())
{
for (int i = 0; i < lineCount; i++)
{
ITextSnapshotLine line = snapshot.GetLineFromLineNumber(i);
int length = line.Length;
if (length == 0)
{
continue;
}
string content = line.GetText();
int pos = length - 1;
while (IsWhiteSpace(content[pos]))
{
pos--;
}
if (pos == length - 1)
{
continue;
}
edit.Delete(line.Start.Position + pos + 1, length - 1 - pos);
}
edit.Apply();
}
}
private static string GetPaddingOrIndentation(ITextSnapshotLine currentLine, int caretPosition, int firstNonWhitespacePosition, string exteriorText)
{
Debug.Assert(caretPosition >= firstNonWhitespacePosition + exteriorText.Length);
var firstNonWhitespaceOffset = firstNonWhitespacePosition - currentLine.Start;
Debug.Assert(firstNonWhitespaceOffset > -1);
var lineText = currentLine.GetText();
if ((lineText.Length == firstNonWhitespaceOffset + exteriorText.Length))
{
// *|
return(" ");
}
var interiorText = lineText.Substring(firstNonWhitespaceOffset + exteriorText.Length);
var interiorFirstNonWhitespaceOffset = interiorText.GetFirstNonWhitespaceOffset() ?? -1;
if (interiorFirstNonWhitespaceOffset == 0)
{
// /****|
return(" ");
}
var interiorFirstWhitespacePosition = firstNonWhitespacePosition + exteriorText.Length;
if (interiorFirstNonWhitespaceOffset == -1 || caretPosition <= interiorFirstWhitespacePosition + interiorFirstNonWhitespaceOffset)
{
// * |
// or
// * | 1.
// ^^
return(currentLine.Snapshot.GetText(interiorFirstWhitespacePosition, caretPosition - interiorFirstWhitespacePosition));
}
else
{
// * 1. |
// ^^^
return(currentLine.Snapshot.GetText(interiorFirstWhitespacePosition, interiorFirstNonWhitespaceOffset));
}
}
public IEnumerable <ITagSpan <SiTokenTag> > GetTags(NormalizedSnapshotSpanCollection spans)
{
foreach (SnapshotSpan curSpan in spans)
{
ITextSnapshotLine containingLine = curSpan.Start.GetContainingLine();
int position = containingLine.Start.Position;
var tokens = new List <SiToken>();
tokenizer.getTokens(tokens, containingLine.GetText().ToLower(), position, IsSqlSection(containingLine));
foreach (SiToken token in tokens)
{
int pos = position + (token.position - token.value.Length);
var tokenSpan = new SnapshotSpan(curSpan.Snapshot, new Span(pos, token.value.Length));
var tokenTag = new SiTokenTag(token.tokenType);
if (tokenSpan.IntersectsWith(curSpan))
{
yield return(new TagSpan <SiTokenTag>(tokenSpan, tokenTag));
}
}
}
}
public IEnumerable <ITagSpan <PrologTokenTag> > GetTags(NormalizedSnapshotSpanCollection spans)
{
foreach (SnapshotSpan curSpan in spans)
{
ITextSnapshotLine containingLine = curSpan.Start.GetContainingLine();
int curLoc = containingLine.Start.Position;
string formattedLine = containingLine.GetText();
foreach (SnapshotHelper item in PrologCodeHelper.GetTokens(curSpan))
{
if (item.Snapshot.IntersectsWith(curSpan))
{
yield return(new TagSpan <PrologTokenTag>(item.Snapshot, new PrologTokenTag(item.TokenType)));
}
}
//add an extra char location because of the space
curLoc += formattedLine.Length + 1;
}
}
/// <summary>
/// Determines which <see cref="T:Microsoft.VisualStudio.Language.Intellisense.CompletionSet"/>s should be part of the specified <see cref="T:Microsoft.VisualStudio.Language.Intellisense.ICompletionSession"/>.
/// </summary>
/// <param name="session">The session for which completions are to be computed.</param><param name="completionSets">The set of the completionSets to be added to the session.</param>
/// <remarks>
/// Each applicable <see cref="M:Microsoft.VisualStudio.Language.Intellisense.ICompletionSource.AugmentCompletionSession(Microsoft.VisualStudio.Language.Intellisense.ICompletionSession,System.Collections.Generic.IList{Microsoft.VisualStudio.Language.Intellisense.CompletionSet})"/> instance will be called in-order to
/// (re)calculate a <see cref="T:Microsoft.VisualStudio.Language.Intellisense.ICompletionSession"/>. <see cref="T:Microsoft.VisualStudio.Language.Intellisense.CompletionSet"/>s can be added to the session by adding
/// them to the completionSets collection passed-in as a parameter. In addition, by removing items from the collection, a
/// source may filter <see cref="T:Microsoft.VisualStudio.Language.Intellisense.CompletionSet"/>s provided by <see cref="T:Microsoft.VisualStudio.Language.Intellisense.ICompletionSource"/>s earlier in the calculation
/// chain.
/// </remarks>
public void AugmentCompletionSession(ICompletionSession session, IList <CompletionSet> completionSets)
{
ITextSnapshot snapshot = session.TextView.TextBuffer.CurrentSnapshot;
SnapshotPoint?triggerPoint = session.GetTriggerPoint(snapshot);
if (!triggerPoint.HasValue)
{
return;
}
ITextSnapshotLine line = snapshot.GetLineFromPosition(triggerPoint.Value);
string lineString = line.GetText();
SimpleExpansion expansion;
expansion = GetExpansions(lineString, triggerPoint.Value);
if (expansion == null)
{
return;
}
List <Completion> completions = new List <Completion>();
foreach (string str in expansion.Expansions)
{
completions.Add(new Completion(str, str, null, null, null));
}
SnapshotPoint point = session.TextView.Caret.Position.BufferPosition;
ITrackingSpan applicableTo =
point.Snapshot.CreateTrackingSpan(
(Span) new SnapshotSpan(point + expansion.Start, expansion.Length),
SpanTrackingMode.EdgeInclusive);
completionSets.Add(new CompletionSet(LanguageConfiguration.Name,
LanguageConfiguration.Name,
applicableTo,
completions,
null));
}
int ReParse_Procedure(ITextSnapshotLine line, List <Region> newRegions)
{
string text = line.GetText();
Region rgn = null;
// PROC, open a new region
if (CompareKeyword(text, ProcKeywords[0]))
{
// PROC can't be nested
if (m_regionStack.Count > 0 && m_regionStack.Peek().Type == RegionType.RT_Procedure)
{
return(parse_skip);
}
m_regionStack.Push(new Region()
{
Type = RegionType.RT_Procedure,
StartLine = line.LineNumber,
StartOffset = line.Length
});
}
// ENDP, close current region
else if (CompareKeyword(text, ProcKeywords[1]))
{
// ENDP must exist
if (m_regionStack.Count == 0 || m_regionStack.Peek().Type != RegionType.RT_Procedure)
{
return(parse_skip);
}
rgn = m_regionStack.Pop();
rgn.EndLine = line.LineNumber;
newRegions.Add(rgn);
}
else
{
return(parse_fail);
}
return(parse_success);
}
public IList <ClassificationSpan> GetClassificationSpans(SnapshotSpan span)
{
if (span.IsEmpty || _view == null)
{
return(_empty);
}
IList <ClassificationSpan> list = new List <ClassificationSpan>();
ITextSnapshotLine line = span.Snapshot.GetLineFromPosition(span.Start.Position);
if (_caret > 0 && (line.Extent.Contains(_caret.Position) || line.Extent.End.Position == _caret.Position))
{
_span = span.Snapshot.CreateTrackingSpan(line.Extent, SpanTrackingMode.EdgeExclusive);
return(_empty);
}
IProjectionBuffer projection = span.Snapshot.TextBuffer as IProjectionBuffer;
if (projection != null)
{
SnapshotPoint point = projection.CurrentSnapshot.MapToSourceSnapshot(line.Start + line.Length);
ITextSnapshotLine basePoint = point.Snapshot.GetLineFromPosition(point.Position);
if (basePoint.Length > line.Length)
{
return(_empty);
}
}
string text = line.GetText();
string trimmed = text.TrimEnd();
int diff = text.Length - trimmed.Length;
if (diff > 0)
{
SnapshotSpan ss = new SnapshotSpan(span.Snapshot, line.Start + line.Length - diff, diff);
list.Add(new ClassificationSpan(ss, _whitespace));
}
return(list);
}
/// <summary>
/// Implement interface <seealso cref="ITagger{T}"/>.
/// </summary>
public IEnumerable <ITagSpan <StackdriverTag> > GetTags(NormalizedSnapshotSpanCollection spans)
{
// Note, keep a local copy of ActiveTagData.Current.
// In case ActiveTagData.Current changes by other thread or by async re-entrancy.
var activeData = ActiveTagData.Current;
if (activeData?.TextView != _view || spans.Count == 0)
{
Debug.WriteLine($"TooltipSource.TextView != _view is {ActiveTagData.Current?.TextView != _view}, spans.Count is {spans.Count}");
HideTooltip();
yield break;
}
ITextSnapshotLine textLine = _sourceBuffer.CurrentSnapshot.GetLineFromLineNumber((int)activeData.SourceLine - 1);
string text = textLine.GetText();
SnapshotSpan span;
if (String.IsNullOrWhiteSpace(activeData.MethodName) || !text.Contains(activeData.MethodName))
{
int begin = StringUtils.FirstNonSpaceIndex(text);
int end = StringUtils.LastNonSpaceIndex(text);
if (begin == -1 || end == -1)
{
yield break;
}
span = new SnapshotSpan(textLine.Start + begin, end - begin + 1);
}
else
{
int pos = text.IndexOf(activeData.MethodName);
if (pos < 0)
{
HideTooltip();
yield break;
}
span = new SnapshotSpan(textLine.Start + pos, activeData.MethodName.Length);
}
yield return(new TagSpan <StackdriverTag>(span, s_emptyLoggerTag));
DisplayTooltip(new SnapshotSpan(textLine.Start, textLine.Length));
}
protected override void Run()
{
Document document = IdeApp.Workbench.ActiveDocument;
if (document == null)
{
return;
}
var view = document.GetContent <ITextView> ();
if (view == null)
{
return;
}
ITextSnapshotLine line = view.Caret.Position.BufferPosition.GetContainingLine();
string text = line.GetText();
CSharpInteractivePad.EvaluateText(text);
}
private SnapshotSpan?MatchLine(ITextSnapshotLine snapshotLine)
{
var text = snapshotLine.GetText();
var match = s_commentRegex.Match(text);
if (!match.Success)
{
return(null);
}
var group = match.Groups["word"];
if (!Constants.Words.Contains(group.Value))
{
return(null);
}
var startPoint = snapshotLine.Start.Add(group.Index);
return(new SnapshotSpan(startPoint, snapshotLine.End));
}
public void AssignParameterToField()
{
ITextSnapshot snapshot = view.TextBuffer.CurrentSnapshot;
int pos = view.Caret.Position.BufferPosition.Position;
Declaration declaration = FindDeclarationNear(snapshot, pos, new char[] { '(', ',' }, new char[] { ',', ')', '=' });
if (declaration == null)
{
throw new UnrecognisedParameterDeclarationException();
}
int assignmentLineNumber = FindLineBeforeWhichToInsertMethodStatement(snapshot, declaration.Span.End);
if (assignmentLineNumber < 0)
{
throw new FailedInsertionPointException("Failed to find insertion point before assignment.");
}
ITextSnapshotLine assignmentLine = snapshot.GetLineFromLineNumber(assignmentLineNumber);
int lineNumber = FindLineAfterWhichToInsertFieldDeclaration(snapshot, assignmentLine.Start.Position);
if (lineNumber < 0)
{
throw new FailedInsertionPointException();
}
// add assignment of parameter to method.
ITextEdit edit = snapshot.TextBuffer.CreateEdit();
int assignmentIndent = FindIndentOfLine(assignmentLine.GetText()) + TabSize;
edit.Insert(assignmentLine.Start.Position, ("".PadLeft(assignmentIndent) + "this." + declaration.VariableName + " = " + declaration.VariableName + ";\n"));
// Add declaration.
int indentSize = GetIndentOfNextNonBlankLine(snapshot, lineNumber);
edit.Insert(snapshot.GetLineFromLineNumber(lineNumber + 1).Start.Position, ("".PadLeft(indentSize) + "private " + declaration.ToString() + ";\n"));
edit.Apply();
}
private int GetIndentLevelOfLine(ITextSnapshotLine line, int tabSize)
{
var indentLevel = 0;
foreach (var c in line.GetText())
{
if (!char.IsWhiteSpace(c))
{
break;
}
else if (c == '\t')
{
indentLevel += tabSize;
}
else
{
indentLevel++;
}
}
return(indentLevel);
}
private bool IsCommented(ITextSnapshotLine line)
{
return line.GetText().TrimStart().StartsWith("#");
}
private int GetIndentLevelOfLine(ITextSnapshotLine line)
{
int optionValue = _textView.Options.GetOptionValue<int>(DefaultOptions.TabSizeOptionId);
int num = 0;
string text = line.GetText();
for (int i = 0; i < text.Length; i++)
{
char c = text[i];
if (!char.IsWhiteSpace(c))
{
break;
}
if (c == '\t')
{
num += optionValue;
}
else
{
num++;
}
}
return num;
}
CodeLineType CurrentLineType(ITextSnapshotLine tsl)
{
if(tsl == null)
{
throw new NullReferenceException();
}
string originStr = tsl.GetText();
//more types to be added, currently only normal or blank
if(Regex.IsMatch(originStr, rx_nonwhite))
{
//add more types here
return CodeLineType.Normal;
}
else return CodeLineType.Blank;
}
protected static int ScanToNonWhitespaceChar(ITextSnapshotLine line)
{
Contract.Requires<ArgumentNullException>(line != null, "line");
string text = line.GetText();
int len = text.Length;
int i = 0;
while (i < len && char.IsWhiteSpace(text[i]))
{
i++;
}
return i;
}
private static int CalculateIndentation(string baseline, ITextSnapshotLine line, IEditorOptions options, IClassifier classifier, ITextView textView) {
int indentation = GetIndentation(baseline, options.GetTabSize());
int tabSize = options.GetIndentSize();
var tokens = classifier.GetClassificationSpans(line.Extent);
if (tokens.Count > 0 && !IsUnterminatedStringToken(tokens[tokens.Count - 1])) {
int tokenIndex = tokens.Count - 1;
while (tokenIndex >= 0 &&
(tokens[tokenIndex].ClassificationType.IsOfType(PredefinedClassificationTypeNames.Comment) ||
tokens[tokenIndex].ClassificationType.IsOfType(PredefinedClassificationTypeNames.WhiteSpace))) {
tokenIndex--;
}
if (tokenIndex < 0) {
return indentation;
}
if (ReverseExpressionParser.IsExplicitLineJoin(tokens[tokenIndex])) {
// explicit line continuation, we indent 1 level for the continued line unless
// we're already indented because of multiple line continuation characters.
indentation = GetIndentation(line.GetText(), options.GetTabSize());
var joinedLine = tokens[tokenIndex].Span.Start.GetContainingLine();
if (joinedLine.LineNumber > 0) {
var prevLineSpans = classifier.GetClassificationSpans(tokens[tokenIndex].Span.Snapshot.GetLineFromLineNumber(joinedLine.LineNumber - 1).Extent);
if (prevLineSpans.Count == 0 || !ReverseExpressionParser.IsExplicitLineJoin(prevLineSpans[prevLineSpans.Count - 1])) {
indentation += tabSize;
}
} else {
indentation += tabSize;
}
return indentation;
}
string sline = tokens[tokenIndex].Span.GetText();
var lastChar = sline.Length == 0 ? '\0' : sline[sline.Length - 1];
// use the expression parser to figure out if we're in a grouping...
var spans = textView.BufferGraph.MapDownToFirstMatch(
tokens[tokenIndex].Span,
SpanTrackingMode.EdgePositive,
PythonContentTypePrediciate
);
if (spans.Count == 0) {
return indentation;
}
var revParser = new ReverseExpressionParser(
spans[0].Snapshot,
spans[0].Snapshot.TextBuffer,
spans[0].Snapshot.CreateTrackingSpan(
spans[0].Span,
SpanTrackingMode.EdgePositive
)
);
var tokenStack = new System.Collections.Generic.Stack<ClassificationSpan>();
tokenStack.Push(null); // end with an implicit newline
bool endAtNextNull = false;
foreach (var token in revParser) {
tokenStack.Push(token);
if (token == null && endAtNextNull) {
break;
} else if (token != null &&
token.ClassificationType == revParser.Classifier.Provider.Keyword &&
PythonKeywords.IsOnlyStatementKeyword(token.Span.GetText())) {
endAtNextNull = true;
}
}
var indentStack = new System.Collections.Generic.Stack<LineInfo>();
var current = LineInfo.Empty;
while (tokenStack.Count > 0) {
var token = tokenStack.Pop();
if (token == null) {
current.NeedsUpdate = true;
} else if (token.IsOpenGrouping()) {
indentStack.Push(current);
var start = token.Span.Start;
var line2 = start.GetContainingLine();
var next = tokenStack.Count > 0 ? tokenStack.Peek() : null;
if (next != null && next.Span.End <= line2.End) {
current = new LineInfo {
Indentation = start.Position - line2.Start.Position + 1
};
} else {
current = new LineInfo {
Indentation = GetIndentation(line2.GetText(), tabSize) + tabSize
};
}
} else if (token.IsCloseGrouping()) {
if (indentStack.Count > 0) {
current = indentStack.Pop();
} else {
current.NeedsUpdate = true;
}
} else if (ReverseExpressionParser.IsExplicitLineJoin(token)) {
while (token != null && tokenStack.Count > 0) {
token = tokenStack.Pop();
}
} else if (current.NeedsUpdate == true) {
var line2 = token.Span.Start.GetContainingLine();
current = new LineInfo {
Indentation = GetIndentation(line2.GetText(), tabSize)
};
}
if (token != null && ShouldDedentAfterKeyword(token)) { // dedent after some statements
current.ShouldDedentAfter = true;
}
if (token != null && token.Span.GetText() == ":" && // indent after a colon
indentStack.Count == 0) { // except in a grouping
current.ShouldIndentAfter = true;
// If the colon isn't at the end of the line, cancel it out.
// If the following is a ShouldDedentAfterKeyword, only one dedent will occur.
current.ShouldDedentAfter = (tokenStack.Count != 0 && tokenStack.Peek() != null);
}
}
indentation = current.Indentation +
(current.ShouldIndentAfter ? tabSize : 0) -
(current.ShouldDedentAfter ? tabSize : 0);
}
// Map indentation back to the view's text buffer.
int offset = 0;
var viewLineStart = textView.BufferGraph.MapUpToSnapshot(line.Start, PointTrackingMode.Positive, PositionAffinity.Successor, textView.TextSnapshot);
if (viewLineStart.HasValue) {
offset = viewLineStart.Value.Position - viewLineStart.Value.GetContainingLine().Start.Position;
}
return offset + indentation;
}
public static string GetItemAtPosition(ITextSnapshotLine line, int position, Func<RTokenType, bool> tokenTypeCheck, out Span span) {
string lineText = line.GetText();
var offset = 0;
var positionInTokens = position - line.Start;
var tokenizer = new RTokenizer();
var tokens = tokenizer.Tokenize(lineText);
var tokenIndex = tokens.GetItemContaining(positionInTokens);
if (tokenIndex >= 0) {
var token = tokens[tokenIndex];
if (token.TokenType == RTokenType.Comment) {
// Tokenize inside comment since we do want F1 to work inside
// commented out code, code samples or Roxygen blocks.
positionInTokens -= token.Start;
offset = token.Start + 1;
tokens = tokenizer.Tokenize(lineText.Substring(offset, token.Length - 1));
tokenIndex = tokens.GetItemContaining(positionInTokens);
if (tokenIndex >= 0) {
token = tokens[tokenIndex];
}
}
if (tokenTypeCheck(token.TokenType)) {
var start = token.Start + offset;
var end = Math.Min(start + token.Length, line.End);
span = Span.FromBounds(line.Start + start, line.Start + end); // return view span
return lineText.Substring(start, end - start);
}
}
span = Span.FromBounds(0, 0);
return string.Empty;
}
private string GetCommentText(CommentType commentType, ITextSnapshotLine line) {
return line.GetText().Substring(GetCommentIndent(commentType, line) + commentType.Token.Length).Trim();
}
private static bool IsPropertyNameEligible(ITextSnapshotLine line)
{
return !line.GetText().Contains(":");
}
private static bool IsPropertyValueEligible(ITextSnapshotLine line, int position)
{
string text = line.GetText();
int diff = text.Length - text.TrimEnd().Length;
if (line.End.Position - diff > position)
return false;
if (text.IndexOf(';') > -1)
return false;
return true;
}
public static int OuterIndentSizeFromLine(ITextSnapshotLine line, RFormatOptions options) {
string lineText = line.GetText();
string leadingWhitespace = lineText.Substring(0, lineText.Length - lineText.TrimStart().Length);
return IndentBuilder.TextIndentInSpaces(leadingWhitespace, options.TabSize);
}
private static string GetPaddingOrIndentation(ITextSnapshotLine currentLine, int caretPosition, int firstNonWhitespacePosition, string exteriorText)
{
Debug.Assert(caretPosition >= firstNonWhitespacePosition + exteriorText.Length);
var firstNonWhitespaceOffset = firstNonWhitespacePosition - currentLine.Start;
Debug.Assert(firstNonWhitespaceOffset > -1);
var lineText = currentLine.GetText();
if ((lineText.Length == firstNonWhitespaceOffset + exteriorText.Length))
{
// *|
return " ";
}
var interiorText = lineText.Substring(firstNonWhitespaceOffset + exteriorText.Length);
var interiorFirstNonWhitespaceOffset = interiorText.GetFirstNonWhitespaceOffset() ?? -1;
if (interiorFirstNonWhitespaceOffset == 0)
{
// /****|
return " ";
}
var interiorFirstWhitespacePosition = firstNonWhitespacePosition + exteriorText.Length;
if (interiorFirstNonWhitespaceOffset == -1 || caretPosition <= interiorFirstWhitespacePosition + interiorFirstNonWhitespaceOffset)
{
// * |
// or
// * | 1.
// ^^
return currentLine.Snapshot.GetText(interiorFirstWhitespacePosition, caretPosition - interiorFirstWhitespacePosition);
}
else
{
// * 1. |
// ^^^
return currentLine.Snapshot.GetText(interiorFirstWhitespacePosition, interiorFirstNonWhitespaceOffset);
}
}
private int? DoSmartIndent(ITextSnapshotLine line) {
if (line.LineNumber == 0) {
return null;
}
int? indentation = GetLeadingWhiteSpace(line.GetText());
var classifications = EnumerateClassificationsInReverse(
_classifier,
line.Snapshot.GetLineFromLineNumber(line.LineNumber - 1).End
);
if (classifications.MoveNext()) {
var starting = classifications.Current;
// first check to see if we're in an unterminated multiline token
if (starting != null) {
if (starting.Tag.ClassificationType.Classification == "comment" &&
starting.Span.GetText().StartsWith("/*") &&
(!starting.Span.GetText().EndsWith("*/") || starting.Span.End.GetContainingLine() == line)) {
// smart indent in comment, dont indent
return null;
} else if (starting.Tag.ClassificationType.Classification == "string") {
var text = starting.Span.GetText();
if (!text.EndsWith("\"") && !text.EndsWith("'")) {
// smart indent in multiline string, no indent
return null;
}
}
}
// walk backwards and collect all of the possible tokens that could
// be useful here...
var tokenStack = new System.Collections.Generic.Stack<ITagSpan<ClassificationTag>>();
tokenStack.Push(null); // end with an implicit newline
bool endAtNextNull = false;
do {
var token = classifications.Current;
tokenStack.Push(token);
if (token == null && endAtNextNull) {
break;
} else if (token != null &&
token.Span.GetText() == "{") {
endAtNextNull = true;
}
} while (classifications.MoveNext());
var indentStack = new System.Collections.Generic.Stack<LineInfo>();
var current = LineInfo.Empty;
while (tokenStack.Count > 0) {
var token = tokenStack.Pop();
bool didDedent = false;
if (token == null) {
current.NeedsUpdate = true;
} else if (IsOpenGrouping(token)) {
if (current.WasIndentKeyword && token.Span.GetText() == "{") {
// the indentation statement is followed by braces, go ahead
// and remove the level of indentation now
current.WasIndentKeyword = false;
current.Indentation -= _editorOptions.GetTabSize();
}
indentStack.Push(current);
var start = token.Span.Start;
current = new LineInfo {
Indentation = GetLeadingWhiteSpace(start.GetContainingLine().GetText()) + _editorOptions.GetTabSize()
};
} else if (_indentKeywords.Contains(token.Span.GetText()) && !current.WasDoKeyword) {
// if (foo)
// console.log('hi')
// We should indent here
var start = token.Span.Start;
int dedentTo = GetLeadingWhiteSpace(start.GetContainingLine().GetText());
if (current.DedentTo != null && token.Span.GetText() != "if") {
// https://nodejstools.codeplex.com/workitem/1176
// if (true)
// while (true)
// ;
//
// We should dedent to the if (true)
// But for:
// if (true)
// if (true)
// ;
// We still want to dedent to our current level for the else
dedentTo = current.DedentTo.Value;
}
current = new LineInfo {
Indentation = GetLeadingWhiteSpace(start.GetContainingLine().GetText()) + _editorOptions.GetTabSize(),
DedentTo = dedentTo,
WasIndentKeyword = true,
WasDoKeyword = token.Span.GetText() == "do"
};
} else if (IsCloseGrouping(token)) {
if (indentStack.Count > 0) {
current = indentStack.Pop();
} else {
current = new LineInfo {
Indentation = GetLeadingWhiteSpace(token.Span.Start.GetContainingLine().GetText())
};
}
} else if (IsMultilineStringOrComment(token)) {
while (token != null && tokenStack.Count > 0) {
token = tokenStack.Pop();
}
} else if (current.WasIndentKeyword) {
// we've encountered a token after the opening of the indented
// statement, go ahead and decrement our indentation level now.
current = new LineInfo {
Indentation = current.DedentTo,
DedentTo = current.DedentTo - _editorOptions.GetTabSize(),
WasDoKeyword = current.WasDoKeyword
};
didDedent = true;
} else if (current.NeedsUpdate) {
var line2 = token.Span.Start.GetContainingLine();
current = new LineInfo {
Indentation = GetLeadingWhiteSpace(line2.GetText())
};
}
if (!didDedent && token != null && _dedentKeywords.Contains(token.Span.GetText())) { // dedent after some statements
current.ShouldDedentAfter = true;
}
}
return current.Indentation -
(current.ShouldDedentAfter ? _editorOptions.GetTabSize() : 0);
}
return null;
}
private static void DeleteFirstCommentChar(ITextEdit edit, ITextSnapshotLine curLine)
{
var text = curLine.GetText();
for (int j = 0; j < text.Length; j++) {
if (!Char.IsWhiteSpace(text[j])) {
if (text[j] == '#') {
edit.Delete(curLine.Start.Position + j, 1);
}
break;
}
}
}
private bool IsSelectorEligible(ITextSnapshotLine line, int position)
{
string text = line.GetText();
if (text.IndexOf('{') > -1)
return false;
if (text.Trim().EndsWith(",", StringComparison.Ordinal))
return false;
if (line.LineNumber + 1 < line.Snapshot.LineCount)
{
var next = line.Snapshot.GetLineFromLineNumber(line.LineNumber + 1);
if (next.GetText().Trim().StartsWith("{", StringComparison.Ordinal))
return false;
}
return true;
}
/// <summary>
/// find how many tabs are there
/// </summary>
/// <param name="tsl"></param>
/// <returns></returns>
int GetIndentation(ITextSnapshotLine tsl)
{
if(tsl == null)
{
throw new NullReferenceException();
}
string originStr = tsl.GetText();
//position of first non-white
int firstNonWhite = Regex.Match(originStr, rx_nonwhite).Index;
string whiteString = originStr.Substring(0, firstNonWhite);
int tabCount = Regex.Matches(whiteString, rx_tab).Count;
int spaceCount = Regex.Matches(whiteString, rx_space).Count;
tabCount += spaceCount / tab_count;
return tabCount;
}
private static bool IsSelectorEligible(ITextSnapshotLine line, int position)
{
string text = line.GetText();
if (text.IndexOf('{') > -1)
return false;
if (line.Snapshot.ContentType.DisplayName == "LESS")
{
var commentStart = text.IndexOf("//");
if (commentStart > position)
return false;
if (commentStart > 0)
text = text.Remove(commentStart);
}
if (text.Trim().EndsWith(",", StringComparison.Ordinal))
return false;
if (line.LineNumber + 1 < line.Snapshot.LineCount)
{
var next = line.Snapshot.GetLineFromLineNumber(line.LineNumber + 1);
if (next.GetText().Trim().StartsWith("{", StringComparison.Ordinal))
return false;
}
return true;
}
private static void DeleteCommentChars(ITextEdit edit, ITextSnapshotLine curLine) {
var text = curLine.GetText();
for (int j = 0; j < text.Length; j++) {
if (!Char.IsWhiteSpace(text[j])) {
if (text.Substring(j, 2) == "//") {
edit.Delete(curLine.Start.Position + j, 2);
}
break;
}
}
}
private int InsertSemiColon(ITextSnapshotLine line)
{
string text = line.GetText();
using (ITextEdit edit = _textView.TextBuffer.CreateEdit())
{
_dte.UndoContext.Open("Insert braces");
edit.Replace(line.Extent, text.TrimEnd() + ";\n\t");
edit.Apply();
_dte.UndoContext.Close();
}
//SendKeys.Send("^( )");
return VSConstants.S_OK;
}
private int GetCommentIndent(CommentType commentType, ITextSnapshotLine line) {
return line.GetText().IndexOf(commentType.Token, StringComparison.Ordinal);
}
public IEnumerable<SnapshotSpan> Match(ITextSnapshotLine line)
{
Regex regex = GetRegex();
if ( line.Length == 0 || regex == null ) {
yield break;
}
ITextSnapshot snapshot = line.Snapshot;
var matches = GetRegex().Matches(line.GetText());
foreach ( Match m in matches ) {
switch ( Options ) {
case ExpressionOptions.HideMatch:
yield return new SnapshotSpan(snapshot,
line.Start + m.Index, m.Length);
break;
case Util.ExpressionOptions.HideGroups:
for ( int g = 1; g < m.Groups.Count; g++ ) {
yield return new SnapshotSpan(snapshot,
line.Start + m.Groups[g].Index, m.Groups[g].Length);
}
break;
}
}
}
private CommentType GetCommentType(ITextSnapshotLine line) {
var text = line.GetText().Trim();
if (text.StartsWith(_longCommentToken))
return new CommentType(_longCommentToken);
if (text.StartsWith(_shortCommentToken))
return new CommentType(_shortCommentToken);
return null;
}
private static IToken GetActiveToken(int columnIndex, ITextSnapshotLine line)
{
var tokens = Utils.LexString(line.GetText());
if (columnIndex == line.Length)
{
var lastToken = tokens.Last();
if (lastToken.Type == RustLexer.RustLexer.IDENT)
return lastToken;
// fake token for an ident not yet started at the end of the line.
return new CommonToken(new Tuple<ITokenSource, ICharStream>(lastToken.TokenSource, lastToken.TokenSource.InputStream),
RustLexer.RustLexer.IDENT, 0, columnIndex, columnIndex);
}
IToken token = null;
IToken previousToken = null;
foreach (var currentToken in tokens)
{
if (currentToken.StartIndex <= columnIndex && columnIndex <= currentToken.StopIndex)
{
token = currentToken;
break;
}
previousToken = currentToken;
}
if (token == null)
{
return null;
}
if (token.Type == RustLexer.RustLexer.IDENT)
{
return token;
}
// if current token isn't identifier and caret at end of ident token
if (token.StartIndex == columnIndex && previousToken != null && previousToken.Type == RustLexer.RustLexer.IDENT)
{
return previousToken;
}
// fake token for position between 2 non-ident tokens
return new CommonToken(new Tuple<ITokenSource, ICharStream>(token.TokenSource, token.TokenSource.InputStream), 1, 0, token.StartIndex, token.StartIndex - 1);
}
private static void SkipPreceedingBlankLines(ITextSnapshotLine line, out string baselineText, out ITextSnapshotLine baseline) {
string text;
while (line.LineNumber > 0) {
line = line.Snapshot.GetLineFromLineNumber(line.LineNumber - 1);
text = line.GetText();
if (!IsBlankLine(text)) {
baseline = line;
baselineText = text;
return;
}
}
baselineText = line.GetText();
baseline = line;
}
public void Parse(SnapshotSpan paragraph, IClassificationTypeRegistryService registry, List<ClassificationSpan> classifications)
{
_registry = registry;
_classifications = classifications;
var state = HeaderState.Start;
var startLine = paragraph.Start.GetContainingLine().LineNumber;
var endLine = paragraph.End.GetContainingLine().LineNumber;
heading = '\0';
title = null;
overline = null;
underline = null;
for (int i = startLine; i <= endLine; i++)
{
line = paragraph.Snapshot.GetLineFromLineNumber(i);
lineText = line.GetText();
var match = Regex.Match(lineText, adornment);
state = match.Success ? TransitionAdornmentLine(state) : TransitionTextLine(state);
if (state == HeaderState.Text)
{
break;
}
}
CreateClassificationSpan();
}
private static int GetFirstNonWhiteSpaceCharacterOnLine(ITextSnapshotLine line)
{
var text = line.GetText();
for (int i = 0; i < text.Length; i++) {
if (!Char.IsWhiteSpace(text[i])) {
return line.Start.Position + i;
}
}
return line.End.Position;
}
private static string GetItem(ITextSnapshotLine line, int position, Func<char, bool> charSelector, out Span span) {
string lineText = line.GetText();
int linePosition = position - line.Start;
int start = 0;
int end = lineText.Length;
for (int i = linePosition - 1; i >= 0; i--) {
char ch = lineText[i];
if (!charSelector(ch)) {
start = i + 1;
break;
}
}
for (int i = linePosition; i < lineText.Length; i++) {
char ch = lineText[i];
if (!charSelector(ch)) {
end = i;
break;
}
}
if (end > start) {
span = Span.FromBounds(start + line.Start, end + line.Start);
return lineText.Substring(start, end - start);
}
span = Span.FromBounds(0, 0);
return string.Empty;
}