/// <summary>
/// Returns true if the symbol of element <paramref name="element"/>
/// is equal to <paramref name="symbol"/>
/// </summary>
private static bool AreSymbolsEqual(Symbol symbol, SyntaxElement element, FindRelatedOptions options)
{
var canSee = (options & FindRelatedOptions.SeeThroughVariables) != 0;
return((element is NameReference n && (n.ReferencedSymbol == symbol || (canSee && n.ReferencedSymbol == Symbol.GetExpressionResultType(symbol)))) ||
(element is NameDeclaration d && (d.ReferencedSymbol == symbol || (canSee && Symbol.GetExpressionResultType(d.ReferencedSymbol) == symbol))));
}
public override RelatedInfo GetRelatedElements(int position, FindRelatedOptions options, CancellationToken cancellationToken)
{
var result = _service.GetRelatedElements(position - _offset, options, cancellationToken);
if (result.Elements.Count > 0 && _offset > 0)
{
return(new RelatedInfo(result.Elements.Select(e =>
new RelatedElement(e.Start + _offset, e.Length, e.Kind, e.CursorLeft + _offset, e.CursorRight + _offset)).ToReadOnly(), result.CurrentIndex));
}
else
{
return(result);
}
}
public override RelatedInfo GetRelatedElements(int position, FindRelatedOptions options = FindRelatedOptions.None, CancellationToken cancellationToken = default(CancellationToken))
{
if (this.TryGetBoundCode(cancellationToken, true, out var code))
{
try
{
return(new KustoRelatedElementFinder(code).FindRelatedElements(position, options));
}
catch (Exception)
{
}
}
return(RelatedInfo.Empty);
}
public RelatedInfo FindRelatedElements(int position, FindRelatedOptions options = FindRelatedOptions.None)
{
var token = _code.Syntax.GetTokenAt(position);
if (token == null || position > token.TriviaStart && position < token.TextStart - 1)
{
// position is inside trivia and not attached to any token.
return(RelatedInfo.Empty);
}
var prev = token?.GetPreviousToken();
if (position == token.TriviaStart)
{
if (token.Trivia.Length > 0 || (prev != null && IsRelatable(prev) && !IsRelatable(token)))
{
token = token.GetPreviousToken();
}
}
if (token == null)
{
return(RelatedInfo.Empty);
}
var elements = new List <RelatedElement>();
if (IsBracket(token))
{
GetRelatedBrackets(token, elements);
}
else if (IsPartOfNameReferenceOrDeclaration(token))
{
GetRelatedNameReferencesAndDeclarations(token, elements, options);
}
if (elements.Count > 1)
{
var current = elements.FirstOrDefault(r => r.Start == token.TextStart);
if (current != null)
{
var currentIndex = elements.IndexOf(current);
return(new RelatedInfo(elements, currentIndex));
}
}
return(RelatedInfo.Empty);
}
public void GetRelatedNameReferencesAndDeclarations(SyntaxToken token, List <RelatedElement> elements, FindRelatedOptions options)
{
var symbol = token.Parent.GetFirstAncestorOrSelf <SyntaxNode>(n => n.ReferencedSymbol != null)?.ReferencedSymbol;
if (symbol != null)
{
_code.Syntax.WalkElements(e =>
{
if (AreSymbolsEqual(symbol, e, options))
{
RelatedElementKind kind;
if (e is NameDeclaration)
{
kind = RelatedElementKind.Declaration;
}
else if (e is NameReference)
{
kind = RelatedElementKind.Reference;
}
else
{
kind = RelatedElementKind.Other;
}
elements.Add(new RelatedElement(e.TextStart, e.Width, kind, e.TextStart, e.TextStart));
}
});
}
}
public override RelatedInfo GetRelatedElements(int position, FindRelatedOptions options, CancellationToken cancellationToken)
{
return(RelatedInfo.Empty);
}
/// <summary> /// Gets a list of all the syntax elements related to the syntax element at or adjacent to the text position. /// </summary> public abstract RelatedInfo GetRelatedElements(int position, FindRelatedOptions options = FindRelatedOptions.None, CancellationToken cancellationToken = default(CancellationToken));