public static bool HasAttributeOnAncestorOrSelf(this CSharpSyntaxNode node, string attributeName)
{
var parentMethod = (BaseMethodDeclarationSyntax)node.FirstAncestorOrSelfOfType(typeof(MethodDeclarationSyntax), typeof(ConstructorDeclarationSyntax));
if (parentMethod?.AttributeLists.HasAttribute(attributeName) ?? false)
{
return(true);
}
var type = (TypeDeclarationSyntax)node.FirstAncestorOrSelfOfType(typeof(ClassDeclarationSyntax), typeof(StructDeclarationSyntax));
while (type != null)
{
if (type.AttributeLists.HasAttribute(attributeName))
{
return(true);
}
type = (TypeDeclarationSyntax)type.FirstAncestorOfType(typeof(ClassDeclarationSyntax), typeof(StructDeclarationSyntax));
}
var property = node.FirstAncestorOrSelfOfType <PropertyDeclarationSyntax>();
if (property?.AttributeLists.HasAttribute(attributeName) ?? false)
{
return(true);
}
var accessor = node.FirstAncestorOrSelfOfType <AccessorDeclarationSyntax>();
if (accessor?.AttributeLists.HasAttribute(attributeName) ?? false)
{
return(true);
}
var anInterface = node.FirstAncestorOrSelfOfType <InterfaceDeclarationSyntax>();
if (anInterface?.AttributeLists.HasAttribute(attributeName) ?? false)
{
return(true);
}
var anEvent = node.FirstAncestorOrSelfOfType <EventDeclarationSyntax>();
if (anEvent?.AttributeLists.HasAttribute(attributeName) ?? false)
{
return(true);
}
var anEnum = node.FirstAncestorOrSelfOfType <EnumDeclarationSyntax>();
if (anEnum?.AttributeLists.HasAttribute(attributeName) ?? false)
{
return(true);
}
var field = node.FirstAncestorOrSelfOfType <FieldDeclarationSyntax>();
if (field?.AttributeLists.HasAttribute(attributeName) ?? false)
{
return(true);
}
var eventField = node.FirstAncestorOrSelfOfType <EventFieldDeclarationSyntax>();
if (eventField?.AttributeLists.HasAttribute(attributeName) ?? false)
{
return(true);
}
var parameter = node as ParameterSyntax;
if (parameter?.AttributeLists.HasAttribute(attributeName) ?? false)
{
return(true);
}
var aDelegate = node as DelegateDeclarationSyntax;
if (aDelegate?.AttributeLists.HasAttribute(attributeName) ?? false)
{
return(true);
}
return(false);
}
