SONARPY-1889 add new methods to ClassSymbol to get super classes info

Author: maksim-grebeniuk-sonarsource

python-frontend/src/main/java/org/sonar/plugins/python/api/symbols/ClassSymbol.java

@@ -27,6 +27,9 @@
 import org.sonar.plugins.python.api.LocationInFile;
 
 public interface ClassSymbol extends Symbol {
+  @Beta
+  List<String> superClassesFqn();
+
   List<Symbol> superClasses();
 
   boolean hasUnresolvedTypeHierarchy();

python-frontend/src/main/java/org/sonar/python/semantic/ClassSymbolImpl.java

@@ -198,6 +198,15 @@ public ClassSymbolImpl copyWithoutUsages() {
     return copiedClassSymbol;
   }
 
+  @Override
+  public List<String> superClassesFqn() {
+    return superClassesFqns;
+  }
+
+  public boolean shouldSearchHierarchyInTypeshed() {
+    return !hasAlreadyReadSuperClasses && superClasses.isEmpty() && !superClassesFqns.isEmpty();
+  }
+
   @Override
   public List<Symbol> superClasses() {
     // In case of symbols coming from TypeShed protobuf, we resolve superclasses lazily