public static IEnumerable <MethodDef> GetVisibleExtensionMethods(this MetadataTables tables)
{
MetadataRecord eaCtor = GetExtensionAttributeCtor(tables);
if (!eaCtor.IsNull)
{
foreach (CustomAttributeDef ca in tables.CustomAttributes)
{
if (ca.Constructor.Equals(eaCtor) && ca.Parent.IsMethodDef)
{
MethodDef mdef = ca.Parent.MethodDef;
var mattrs = mdef.Attributes;
if ((mattrs & MethodAttributes.MemberAccessMask) == MethodAttributes.Public && (mattrs & MethodAttributes.Static) != 0)
{
var declType = mdef.FindDeclaringType();
var tattrs = declType.Attributes;
if (((tattrs & TypeAttributes.VisibilityMask) == TypeAttributes.Public ||
(tattrs & TypeAttributes.VisibilityMask) == TypeAttributes.NestedPublic) &&
(tattrs & TypeAttributes.Abstract) != 0 &&
(tattrs & TypeAttributes.Sealed) != 0)
{
yield return(mdef);
}
}
}
}
}
}