protected virtual SpanBuilder UpdateSpan(Span target, TextChange normalizedChange)
{
var newContent = normalizedChange.ApplyChange(target);
var newSpan = new SpanBuilder(target);
newSpan.ClearSymbols();
foreach (ISymbol sym in Tokenizer(newContent))
{
sym.OffsetStart(target.Start);
newSpan.Accept(sym);
}
if (target.Next != null)
{
var newEnd = SourceLocationTracker.CalculateNewLocation(target.Start, newContent);
target.Next.ChangeStart(newEnd);
}
return newSpan;
}
private PartialParseResult TryAcceptChange(Span target, TextChange change, PartialParseResult acceptResult = PartialParseResult.Accepted)
{
var content = change.ApplyChange(target);
if (StartsWithKeyword(content))
{
return PartialParseResult.Rejected | PartialParseResult.SpanContextChanged;
}
return acceptResult;
}
public void ApplyChangeWithReplacedTextReturnsNewContentWithChangeApplied()
{
// Arrange
var newBuffer = new StringTextBuffer("abcdefg");
var oldBuffer = new StringTextBuffer("");
var textChange = new TextChange(1, 1, oldBuffer, 2, newBuffer);
// Act
string text = textChange.ApplyChange("abcdefg", 1);
// Assert
Assert.Equal("bcbcdefg", text);
}
public void ApplyChangeWithInsertedTextReturnsNewContentWithChangeApplied()
{
// Arrange
var newBuffer = new StringTextBuffer("test");
var oldBuffer = new StringTextBuffer("");
var textChange = new TextChange(0, 0, oldBuffer, 3, newBuffer);
// Act
string text = textChange.ApplyChange("abcd", 0);
// Assert
Assert.Equal("tesabcd", text);
}