public static EditorTree ApplyTextChange(string expression, int start, int oldLength, int newLength, string newText)
{
TextBufferMock textBuffer = new TextBufferMock(expression, RContentTypeDefinition.ContentType);
EditorTree tree = new EditorTree(textBuffer);
tree.Build();
TextChange tc = new TextChange();
tc.OldRange = new TextRange(start, oldLength);
tc.NewRange = new TextRange(start, newLength);
tc.OldTextProvider = new TextProvider(textBuffer.CurrentSnapshot);
if (oldLength == 0 && newText.Length > 0)
{
textBuffer.Insert(start, newText);
}
else if (oldLength > 0 && newText.Length > 0)
{
textBuffer.Replace(new Span(start, oldLength), newText);
}
else
{
textBuffer.Delete(new Span(start, oldLength));
}
return(tree);
}
public static EditorTree ApplyTextChange(IServiceContainer services, string expression, int start, int oldLength, int newLength, string newText)
{
var textBuffer = new TextBufferMock(expression, RContentTypeDefinition.ContentType).ToEditorBuffer();
var tree = new EditorTree(textBuffer, services);
tree.Build();
if (oldLength == 0 && newText.Length > 0)
{
textBuffer.Insert(start, newText);
}
else if (oldLength > 0 && newText.Length > 0)
{
textBuffer.Replace(new TextRange(start, oldLength), newText);
}
else
{
textBuffer.Delete(new TextRange(start, oldLength));
}
return(tree);
}
