public int GetDataTipText(TextSpan[] pSpan, out string pbstrText)
{
var doc = _textView.TextBuffer.GetEditorDocument <IREditorDocument>();
var ast = doc?.EditorTree?.AstRoot;
if (ast == null)
{
pbstrText = null;
return(VSConstants.E_FAIL);
}
var snapshot = _textView.TextSnapshot;
var start = LineAndColumnNumberToSnapshotPoint(snapshot, pSpan[0].iStartLine, pSpan[0].iStartIndex);
var end = LineAndColumnNumberToSnapshotPoint(snapshot, pSpan[0].iEndLine, pSpan[0].iEndIndex);
var range = new SnapshotSpan(start, end).ToTextRange();
var node = RDataTip.GetDataTipExpression(ast, range);
if (node == null)
{
pbstrText = null;
return(VSConstants.E_FAIL);
}
var exprSpan = node.ToSnapshotSpan(doc.TextBuffer().CurrentSnapshot);
SnapshotPointToLineAndColumnNumber(exprSpan.Start, out pSpan[0].iStartLine, out pSpan[0].iStartIndex);
SnapshotPointToLineAndColumnNumber(exprSpan.End, out pSpan[0].iEndLine, out pSpan[0].iEndIndex);
return(_debugger.GetDataTipValue(_vsTextLines, pSpan, null, out pbstrText));
}
public void DataTip(string code, int start, int length, string dataTip)
{
var ast = RParser.Parse(new TextStream(code));
var node = RDataTip.GetDataTipExpression(ast, new TextRange(start, length));
if (dataTip == null)
{
node.Should().BeNull();
}
else
{
node.Should().NotBeNull();
var expr = code.Substring(node.Start, node.Length);
expr.Should().Be(dataTip);
}
}
