private async Task <InvocationContext> GetInvocation(Microsoft.CodeAnalysis.Document document, int offset)
{
var sourceText = await document.GetTextAsync();
var position = offset;
var tree = await document.GetSyntaxTreeAsync();
var root = await tree.GetRootAsync();
var node = root.FindToken(position).Parent;
// Walk up until we find a node that we're interested in.
while (node != null)
{
if (node is InvocationExpressionSyntax invocation && invocation.ArgumentList.Span.Contains(position))
{
var semanticModel = await document.GetSemanticModelAsync();
return(new InvocationContext(semanticModel, position, invocation.Expression, invocation.ArgumentList, invocation.IsInStaticContext()));
}
if (node is ObjectCreationExpressionSyntax objectCreation && objectCreation.ArgumentList.Span.Contains(position))
{
var semanticModel = await document.GetSemanticModelAsync();
return(new InvocationContext(semanticModel, position, objectCreation, objectCreation.ArgumentList, objectCreation.IsInStaticContext()));
}
if (node is AttributeSyntax attributeSyntax && attributeSyntax.ArgumentList.Span.Contains(position))
{
var semanticModel = await document.GetSemanticModelAsync();
return(new InvocationContext(semanticModel, position, attributeSyntax, attributeSyntax.ArgumentList, attributeSyntax.IsInStaticContext()));
}
node = node.Parent;
}
return(null);
}
