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;
}
void TextBuffer_Changed(object sender, TextContentChangedEventArgs e)
{
string filename = e.After.TextBuffer.GetFilePath();
if (_textView != null &&
_textView.Caret.Position.BufferPosition.Position >= 0 &&
_textView.Caret.Position.BufferPosition.Position <= e.After.Length &&
_ignoreNextChange != _textView.Caret.Position.BufferPosition.Position)
{
if (e.Changes.Count == 0 ||
e.Changes[0].Delta < 0 ||
string.IsNullOrWhiteSpace(e.Changes[0].NewText))
{
return;
}
var line = e.After.GetLineFromPosition(_textView.Caret.Position.BufferPosition.Position);
var currLineTokens = _classifier.GetClassificationSpans(line);
var lineStr = line.GetText();
TokenKind alignWith = TokenKind.EndOfFile;
bool indentAfterAlign = false;
bool useContains = false;
if (currLineTokens.Count > 0 && currLineTokens[0].ClassificationType.IsOfType(PredefinedClassificationTypeNames.Keyword))
{
if (currLineTokens[0].Span.GetText().Equals("end", StringComparison.OrdinalIgnoreCase))
{
if (currLineTokens.Count > 1)
{
var tok = Tokens.GetToken(currLineTokens[1].Span.GetText());
if (tok != null && AutoIndent.BlockKeywords.ContainsKey(tok.Kind))
{
useContains = AutoIndent.BlockKeywordsContainsCheck.Contains(tok.Kind);
alignWith = tok.Kind;
}
}
}
else
{
var tok = Tokens.GetToken(currLineTokens[0].Span.GetText());
if (tok != null && AutoIndent.SubBlockKeywords.ContainsKey(tok.Kind))
{
alignWith = AutoIndent.SubBlockKeywords[tok.Kind].Item1;
indentAfterAlign = AutoIndent.SubBlockKeywords[tok.Kind].Item2;
}
}
}
if (alignWith != TokenKind.EndOfFile)
{
var keyword = Tokens.TokenKinds[alignWith];
ITextSnapshotLine prevLine;
int prevLineNo = line.LineNumber - 1;
bool found = false;
string prevLineStr = null;
// find the line that corresponds
int inNestedBlockCount = 0;
IList <ClassificationSpan> lineTokens = null;
while (prevLineNo >= 0)
{
prevLine = e.After.GetLineFromLineNumber(prevLineNo);
prevLineStr = prevLine.GetText();
lineTokens = _classifier.GetClassificationSpans(prevLine);
if (lineTokens.Count > 0 && lineTokens[0].ClassificationType.IsOfType(PredefinedClassificationTypeNames.Keyword))
{
if (lineTokens[0].Span.GetText().Equals("end", StringComparison.OrdinalIgnoreCase) &&
lineTokens.Count > 1 &&
lineTokens[1].Span.GetText().Equals(keyword, StringComparison.OrdinalIgnoreCase))
{
inNestedBlockCount++;
}
else if ((!useContains && lineTokens[0].Span.GetText().Equals(keyword, StringComparison.OrdinalIgnoreCase)) ||
(useContains && lineTokens.Any(x => x.Span.GetText().Equals(keyword, StringComparison.OrdinalIgnoreCase))))
{
if (inNestedBlockCount > 0)
{
inNestedBlockCount--;
}
else
{
found = true;
break;
}
}
else if (!useContains &&
keyword.Equals("function", StringComparison.OrdinalIgnoreCase) &&
lineTokens.Count > 1 &&
lineTokens[1].Span.GetText().Equals(keyword, StringComparison.OrdinalIgnoreCase))
{
found = true;
break;
}
}
prevLineNo--;
}
// get the line's indentation
if (found)
{
int indentSize = _options.GetIndentSize();
int desiredIndentation = AutoIndent.GetIndentation(prevLineStr, indentSize);
if (indentAfterAlign)
{
desiredIndentation += indentSize;
}
int currIndentation = AutoIndent.GetIndentation(lineStr, indentSize);
if (desiredIndentation != currIndentation)
{
string replacement = null;
if (desiredIndentation < currIndentation)
{
replacement = lineStr.Substring(currIndentation - desiredIndentation);
}
else
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < (desiredIndentation - currIndentation); i++)
{
sb.Append(' ');
}
sb.Append(lineStr);
replacement = sb.ToString();
}
_ignoreNextChange = _textView.Caret.Position.BufferPosition.Position;
ITextEdit edit = _textView.TextBuffer.CreateEdit();
edit.Replace(new Span(line.Start, line.Length), replacement);
edit.Apply();
return;
}
}
}
}
_ignoreNextChange = -1;
}
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 (Genero4glReverseParser.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 || !Genero4glReverseParser.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 Genero4glReverseParser(
spans[0].Snapshot,
spans[0].Snapshot.TextBuffer,
spans[0].Snapshot.CreateTrackingSpan(
spans[0].Span,
SpanTrackingMode.EdgePositive
)
);
var tokenStack = new List <ClassificationSpan>();
tokenStack.Insert(0, null);
bool endAtNextNull = false;
foreach (var token in revParser)
{
tokenStack.Insert(0, token);
if (token == null && endAtNextNull)
{
break;
}
else if (token != null &&
token.ClassificationType == Genero4glClassifierProvider.Keyword)
{
var tok = Tokens.GetToken(token.Span.GetText());
if (tok != null && Genero4glAst.ValidStatementKeywords.Contains(tok.Kind))
{
switch (tok.Kind)
{
// Handle any tokens that are valid statement keywords in the autocomplete context but not in the "statement start" context
case TokenKind.EndKeyword:
continue;
default:
endAtNextNull = true;
break;
}
}
}
}
var indentStack = new System.Collections.Generic.Stack <LineInfo>();
var current = LineInfo.Empty;
List <CancelIndent> cancelIndent = null;
int cancelIndentStartingAt = -1;
TokenKind firstStatement = TokenKind.EndOfFile;
TokenKind latestIndentChangeToken = TokenKind.EndOfFile;
ClassificationSpan firstToken = null;
for (int i = 0; i < tokenStack.Count; i++)
{
var token = tokenStack[i];
if (token != null && firstToken == null)
{
firstToken = token;
}
if (token == null)
{
current.NeedsUpdate = true;
}
else if (token.IsOpenGrouping())
{
indentStack.Push(current);
var start = token.Span.Start;
var line2 = start.GetContainingLine();
current = new LineInfo
{
Indentation = start.Position - line2.Start.Position + 1
};
}
else if (token.IsCloseGrouping())
{
if (indentStack.Count > 0)
{
current = indentStack.Pop();
}
else
{
current.NeedsUpdate = true;
}
}
else if (Genero4glReverseParser.IsExplicitLineJoin(token))
{
while (token != null && i + 1 < tokenStack.Count)
{
i++;
token = tokenStack[i];
}
}
else if (current.NeedsUpdate == true)
{
var tok = Tokens.GetToken(token.Span.GetText());
if (tok == null || !Genero4glAst.ValidStatementKeywords.Contains(tok.Kind))
{
current.NeedsUpdate = false;
}
else
{
switch (tok.Kind)
{
// Handle any tokens that are valid statement keywords in the autocomplete context but not in the "statement start" context
case TokenKind.EndKeyword:
if (firstStatement != TokenKind.EndOfFile)
{
current.NeedsUpdate = false;
}
else
{
latestIndentChangeToken = tok.Kind;
}
break;
default:
{
if (firstStatement == TokenKind.EndOfFile)
{
firstStatement = tok.Kind;
}
var line2 = token.Span.Start.GetContainingLine();
current = new LineInfo
{
Indentation = GetIndentation(line2.GetText(), tabSize)
};
break;
}
}
}
}
if (token != null && current.ShouldIndentAfter && cancelIndent != null)
{
// Check to see if we have following tokens that would cancel the current indent.
var tok = Tokens.GetToken(token.Span.GetText());
var tokenCategory = token.ClassificationType;
bool allPast = true;
bool cancel = false;
foreach (var ci in cancelIndent)
{
if (ci.TokensAhead < (i - cancelIndentStartingAt))
{
continue;
}
else
{
allPast = false;
if (ci.TokensAhead == (i - cancelIndentStartingAt))
{
if (ci.UseCategory && ci.CancelCategory != null)
{
cancel = tokenCategory == ci.CancelCategory;
}
else if (tok != null)
{
cancel = tok.Kind == ci.CancelToken;
}
if (cancel)
{
break;
}
}
}
}
if (cancel)
{
current.ShouldIndentAfter = false;
}
if (cancel || allPast)
{
cancelIndent = null;
cancelIndentStartingAt = -1;
latestIndentChangeToken = TokenKind.EndOfFile;
}
}
if (token != null && ShouldDedentAfterKeyword(token))
{ // dedent after some statements
current.ShouldDedentAfter = true;
}
TokenKind tempChangeToken;
if (token != null &&
indentStack.Count == 0 &&
firstToken == token &&
ShouldIndentAfterKeyword(token, out tempChangeToken, out cancelIndent))
{ // except in a grouping
if (latestIndentChangeToken != TokenKind.EndKeyword)
{
current.ShouldIndentAfter = true;
}
latestIndentChangeToken = tempChangeToken;
if (cancelIndent != null)
{
cancelIndentStartingAt = i;
}
}
}
if (tokenStack.Count > 2 &&
tokenStack[tokenStack.Count - 2] != null)
{
if (latestIndentChangeToken != TokenKind.EndOfFile &&
_customIndentingRules.ContainsKey(latestIndentChangeToken))
{
var potentialIndent = _customIndentingRules[latestIndentChangeToken](tokenStack, tabSize);
if (potentialIndent != 0)
{
return(potentialIndent);
}
}
// see if we have specific alignment rules
if (firstStatement != TokenKind.EndOfFile &&
_customIndentingRules.ContainsKey(firstStatement))
{
var potentialIndent = _customIndentingRules[firstStatement](tokenStack, tabSize);
if (potentialIndent != 0)
{
return(potentialIndent);
}
}
}
indentation = current.Indentation +
(current.ShouldIndentAfter ? tabSize : 0) -
(current.ShouldDedentAfter ? tabSize : 0);
}
return(indentation);
}
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);
}
return(indentation);
}
private static int CalculateIndentation(
string baseline,
ITextSnapshotLine line,
IEditorOptions options,
PythonTextBufferInfo buffer
)
{
var snapshot = line.Snapshot;
if (snapshot.TextBuffer != buffer.Buffer)
{
throw new ArgumentException("buffer mismatch");
}
int indentation = GetIndentation(baseline, options.GetTabSize());
int tabSize = options.GetIndentSize();
var tokens = buffer.GetTokens(line).ToList();
while (tokens.Count > 0 && IsWhitespace(tokens[tokens.Count - 1].Category))
{
tokens.RemoveAt(tokens.Count - 1);
}
if (tokens.Count == 0 || IsUnterminatedStringToken(tokens[tokens.Count - 1], snapshot))
{
return(indentation);
}
if (HasExplicitLineJoin(tokens, snapshot))
{
// 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 = line.LineNumber - 1;
if (joinedLine >= 0)
{
var prevLineTokens = buffer.GetTokens(snapshot.GetLineFromLineNumber(joinedLine)).ToList();
if (prevLineTokens.Count == 0 || !HasExplicitLineJoin(prevLineTokens, snapshot))
{
indentation += tabSize;
}
}
else
{
indentation += tabSize;
}
return(indentation);
}
var tokenStack = new Stack <TrackingTokenInfo?>();
tokenStack.Push(null); // end with an implicit newline
int endAtLine = -1, currentLine = tokens.Last().LineNumber;
foreach (var t in buffer.GetTokensInReverseFromPoint(tokens.Last().ToSnapshotSpan(snapshot).Start))
{
if (t.LineNumber == currentLine)
{
tokenStack.Push(t);
}
else
{
tokenStack.Push(null);
}
if (t.LineNumber == endAtLine)
{
break;
}
else if (t.Category == TokenCategory.Keyword && PythonKeywords.IsOnlyStatementKeyword(t.GetText(snapshot), buffer.LanguageVersion))
{
endAtLine = t.LineNumber - 1;
}
if (t.LineNumber != currentLine)
{
currentLine = t.LineNumber;
if (t.Category != TokenCategory.WhiteSpace && t.Category != TokenCategory.Comment && t.Category != TokenCategory.LineComment)
{
tokenStack.Push(t);
}
}
}
var indentStack = new Stack <LineInfo>();
var current = LineInfo.Empty;
while (tokenStack.Count > 0)
{
var t = tokenStack.Pop();
if (t == null)
{
current.NeedsUpdate = true;
continue;
}
var tline = new Lazy <string>(() => snapshot.GetLineFromLineNumber(t.Value.LineNumber).GetText());
if (IsOpenGrouping(t.Value, snapshot))
{
indentStack.Push(current);
var next = tokenStack.Count > 0 ? tokenStack.Peek() : null;
if (next != null && next.Value.LineNumber == t.Value.LineNumber)
{
// Put indent at same depth as grouping
current = new LineInfo {
Indentation = t.Value.ToSourceSpan().End.Column - 1
};
}
else
{
// Put indent at one indent deeper than this line
current = new LineInfo {
Indentation = GetIndentation(tline.Value, tabSize) + tabSize
};
}
}
else if (IsCloseGrouping(t.Value, snapshot))
{
if (indentStack.Count > 0)
{
current = indentStack.Pop();
}
else
{
current.NeedsUpdate = true;
}
}
else if (IsExplicitLineJoin(t.Value, snapshot))
{
while (t != null && tokenStack.Count > 0)
{
t = tokenStack.Pop();
}
if (!t.HasValue)
{
continue;
}
}
else if (current.NeedsUpdate == true)
{
current = new LineInfo {
Indentation = GetIndentation(tline.Value, tabSize)
};
}
if (ShouldDedentAfterKeyword(t.Value, snapshot)) // dedent after some statements
{
current.ShouldDedentAfter = true;
}
if (IsColon(t.Value, snapshot) && // 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);
return(indentation);
}