public static AttributeSyntax GetAttribute(this SyntaxNode node, INamedTypeSymbol name)
{
AttributeSyntax attr = null;
if (node is BaseMethodDeclarationSyntax || node is BaseTypeDeclarationSyntax ||
node is BaseFieldDeclarationSyntax)
{
var list = (node is BaseMethodDeclarationSyntax
? node.As <BaseMethodDeclarationSyntax>().AttributeLists
: node is BaseTypeDeclarationSyntax
? node.As <BaseTypeDeclarationSyntax>().AttributeLists
: node.As <BaseFieldDeclarationSyntax>().AttributeLists).ToList();
if (list.Count > 0)
{
attr =
list.SelectMany(o => o.Attributes)
.SingleOrDefault(o => TypeProcessor.TryGetTypeSymbol(o) == name);
if (attr != null)
{
return(attr);
}
}
}
return(null);
}
