private TextSpan GetTextSpan(ExpressionSyntax expression, SyntaxToken openBracket)
{
if (openBracket.Parent is BracketedArgumentListSyntax)
{
return(CompleteElementAccessExpression.GetTextSpan(expression, openBracket));
}
else if (openBracket.Parent is ArrayRankSpecifierSyntax)
{
return(IncompleteElementAccessExpression.GetTextSpan(expression, openBracket));
}
throw ExceptionUtilities.Unreachable;
}
private TextSpan GetTextSpan(ExpressionSyntax expression, SyntaxToken openBracket)
{
if (openBracket.Parent is BracketedArgumentListSyntax)
{
if (expression.Parent is ConditionalAccessExpressionSyntax conditional)
{
return(TextSpan.FromBounds(conditional.Span.Start, openBracket.FullSpan.End));
}
else
{
return(CompleteElementAccessExpression.GetTextSpan(expression, openBracket));
}
}
else if (openBracket.Parent is ArrayRankSpecifierSyntax)
{
return(IncompleteElementAccessExpression.GetTextSpan(expression, openBracket));
}
throw ExceptionUtilities.Unreachable;
}
private static bool TryGetElementAccessExpression(
SyntaxNode root,
int position,
ISyntaxFactsService syntaxFacts,
SignatureHelpTriggerReason triggerReason,
CancellationToken cancellationToken,
[NotNullWhen(true)] out ExpressionSyntax?identifier,
out SyntaxToken openBrace
)
{
return(CompleteElementAccessExpression.TryGetSyntax(
root,
position,
syntaxFacts,
triggerReason,
cancellationToken,
out identifier,
out openBrace
) ||
IncompleteElementAccessExpression.TryGetSyntax(
root,
position,
syntaxFacts,
triggerReason,
cancellationToken,
out identifier,
out openBrace
) ||
ConditionalAccessExpression.TryGetSyntax(
root,
position,
syntaxFacts,
triggerReason,
cancellationToken,
out identifier,
out openBrace
));
}
