public bool HasAttribute(MetadataReader reader, CustomAttributeHandleCollection attrHandles, string attributeFullName)
{
if (!_attributeConstructors.TryGetValue(attributeFullName, out var constructorSet))
{
constructorSet = new HashSet <EntityHandle>();
_attributeConstructors[attributeFullName] = constructorSet;
}
var attrs = attrHandles.Select(reader.GetCustomAttribute).ToList();
if (attrs.Any(attr => constructorSet.Contains(attr.Constructor)))
{
return(true);
}
var compilerGeneratedAttr = attrs
.Where(attr => reader.GetFullname(reader.GetCustomAttrClass(attr)) == attributeFullName)
.Select(attr => (CustomAttribute?)attr)
.FirstOrDefault();
if (compilerGeneratedAttr == null)
{
return(false);
}
constructorSet.Add(compilerGeneratedAttr.Value.Constructor);
return(true);
}