Boo.Lang.Compiler.Steps.CheckAttributesUsage.OnReferenceExpression C# (CSharp) Метод

        public override void OnReferenceExpression(ReferenceExpression node)
        {
            IExternalEntity member = TypeSystemServices.GetOptionalEntity(node) as IExternalEntity;
            if (member == null) {//extract to OnInternalReferenceExpression
                OnInternalReferenceExpression(node);
                return;
            }

            System.Attribute[] attributes = System.Attribute.GetCustomAttributes(member.MemberInfo, typeof(ObsoleteAttribute));
            foreach (ObsoleteAttribute attr in attributes)
            {
                if (attr.IsError)
                    Errors.Add(
                        CompilerErrorFactory.Obsolete(node, member.ToString(), attr.Message));
                else
                    Warnings.Add(
                        CompilerWarningFactory.Obsolete(node, member.ToString(), attr.Message));
            }
        }