// Completing 'DateTime' in intellisense with a '.' could result in: '@DateT' -> '@DateT.' -> '@DateTime.' which is accepted.
private static bool IsNewDotlessCommitInsertion(SyntaxNode target, SourceChange change)
{
return(!IsAtEndOfSpan(target, change) &&
change.Span.AbsoluteIndex > 0 &&
change.NewText.Length > 0 &&
target.GetContent().Last() == '.' &&
ParserHelpers.IsIdentifier(change.NewText, requireIdentifierStart: false) &&
(change.Span.Length == 0 || ParserHelpers.IsIdentifier(change.GetOriginalText(target), requireIdentifierStart: false)));
}
public void GetOrigninalText_SpanIsOwner_ReturnsContent_ZeroLengthSpan()
{
// Arrange
var builder = SyntaxListBuilder <SyntaxToken> .Create();
builder.Add(SyntaxFactory.Token(SyntaxKind.Marker, "Hello, "));
builder.Add(SyntaxFactory.Token(SyntaxKind.Marker, "World"));
var node = SyntaxFactory.MarkupTextLiteral(builder.ToList()).CreateRed(null, 13);
var change = new SourceChange(15, 0, "heyo");
// Act
var result = change.GetOriginalText(node);
// Act
Assert.Equal(string.Empty, result);
}
protected override PartialParseResultInternal CanAcceptChange(SyntaxNode target, SourceChange change)
{
if (AcceptedCharacters == AcceptedCharactersInternal.NonWhitespace)
{
var originalText = change.GetOriginalText(target);
var editedContent = change.GetEditedContent(target);
if (!ContainsWhitespace(originalText) && !ContainsWhitespace(editedContent))
{
// Did not modify whitespace, directive format should be the same.
// Return provisional so extensible IR/code gen pieces can see the full directive text
// once the user stops editing the document.
return(PartialParseResultInternal.Accepted | PartialParseResultInternal.Provisional);
}
}
return(PartialParseResultInternal.Rejected);
}
private PartialParseResultInternal HandleReplacement(Span target, SourceChange change)
{
// Special Case for IntelliSense commits.
// When IntelliSense commits, we get two changes (for example user typed "Date", then committed "DateTime" by pressing ".")
// 1. Insert "." at the end of this span
// 2. Replace the "Date." at the end of the span with "DateTime."
// We need partial parsing to accept case #2.
var oldText = change.GetOriginalText(target);
var result = PartialParseResultInternal.Rejected;
if (EndsWithDot(oldText) && EndsWithDot(change.NewText))
{
result = PartialParseResultInternal.Accepted;
if (!AcceptTrailingDot)
{
result |= PartialParseResultInternal.Provisional;
}
}
return(result);
}