Exclude queries with effective category disapplied.

Author: rvermeulen

cpp/common/src/codingstandards/cpp/Exclusions.qll

@@ -59,4 +59,9 @@ predicate isExcluded(Element e, Query query, string reason) {
     reason =
       "Query has an associated deviation record with a code identifier that is applied to the element."
   )
+  or
+  // The effective category of the query is 'Disapplied'.
+  // This can occur when a Guideline Recategorization Plan is applied.
+  query.getEffectiveCategory().isDisapplied() and
+  reason = "The query is disapplied."
 }

cpp/common/src/codingstandards/cpp/exclusions/RuleMetadata.qll

@@ -40,6 +40,9 @@ class EffectiveCategory extends TEffectiveCategory {
 
   /** Holds if the effective category permits a deviation */
   predicate permitsDeviation() { not this instanceof TMandatory and not this instanceof TInvalid }
+
+  /** Holds if the effective category is 'Disapplied'. */
+  predicate isDisapplied() { this instanceof TDisapplied }
 }
 
 class Query extends TQuery {