public static async Task ComputeRefactoringsAsync(RefactoringContext context, SyntaxNode node)
{
if (context.IsAnyRefactoringEnabled(
RefactoringIdentifiers.WrapInRegion,
RefactoringIdentifiers.WrapInIfDirective,
RefactoringIdentifiers.RemoveEmptyLines))
{
SyntaxNode root = context.Root;
TextSpan span = context.Span;
if (!IsFullLineSpan(node, span))
{
return;
}
Document document = context.Document;
SourceText sourceText = await document.GetTextAsync(context.CancellationToken).ConfigureAwait(false);
if (!TextLineCollectionSelection.TryCreate(sourceText.Lines, span, out TextLineCollectionSelection selectedLines))
{
return;
}
if (!IsInMultiLineDocumentationComment(root, span.Start) &&
!IsInMultiLineDocumentationComment(root, span.End))
{
if (context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInRegion))
{
context.RegisterRefactoring(
"Wrap in region",
ct => WrapInRegionRefactoring.Instance.RefactorAsync(document, selectedLines, ct),
RefactoringIdentifiers.WrapInRegion);
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.WrapInIfDirective))
{
context.RegisterRefactoring(
"Wrap in #if",
ct => WrapInIfDirectiveRefactoring.Instance.RefactorAsync(document, selectedLines, ct),
RefactoringIdentifiers.WrapInIfDirective);
}
}
if (context.IsRefactoringEnabled(RefactoringIdentifiers.RemoveEmptyLines))
{
bool containsEmptyLine = false;
foreach (TextLine line in selectedLines)
{
context.ThrowIfCancellationRequested();
if (line.IsEmptyOrWhiteSpace() &&
root.FindTrivia(line.End, findInsideTrivia: true).IsEndOfLineTrivia())
{
containsEmptyLine = true;
break;
}
}
if (containsEmptyLine)
{
context.RegisterRefactoring(
"Remove empty lines",
ct =>
{
ct.ThrowIfCancellationRequested();
IEnumerable <TextChange> textChanges = selectedLines
.Where(line => line.IsEmptyOrWhiteSpace() && root.FindTrivia(line.End, findInsideTrivia: true).IsEndOfLineTrivia())
.Select(line => new TextChange(line.SpanIncludingLineBreak, ""));
return(document.WithTextChangesAsync(textChanges, ct));
},
RefactoringIdentifiers.RemoveEmptyLines);
}
}
}
}