private static CompletionSyntax GetCompletionSyntax(SyntaxNodeOrToken nodeOrToken)
{
SyntaxNodeOrToken dot;
SyntaxNode prefix = null;
if (nodeOrToken.IsNode)
{
prefix = nodeOrToken.AsNode();
dot = nodeOrToken.GetPreviousSibling();
if (dot.Kind() != SyntaxKind.DotToken)
{
return(new CompletionSyntax(null, prefix));
}
}
else
{
if (nodeOrToken.Kind() != SyntaxKind.DotToken)
{
return(new CompletionSyntax(null, prefix));
}
dot = nodeOrToken;
}
var previous = dot.GetPreviousSibling();
return(previous.IsNode ? new CompletionSyntax(previous.AsNode(), prefix) : new CompletionSyntax(null, prefix));
}