private static Map<String, PsiType> getCompatibleTypeNames( @NotNull PsiType type, @Nullable PsiType min, PsiManager manager, GlobalSearchScope scope) { if (type instanceof PsiDisjunctionType) type = ((PsiDisjunctionType) type).getLeastUpperBound(); // if initial type is not assignable to min type we don't take into consideration min type. if (min != null && !TypesUtil.isAssignable(min, type, manager, scope)) { min = null; } Map<String, PsiType> map = new LinkedHashMap<String, PsiType>(); final PsiPrimitiveType unboxed = PsiPrimitiveType.getUnboxedType(type); if (unboxed != null) type = unboxed; final Set<PsiType> set = new LinkedHashSet<PsiType>(); set.add(type); while (!set.isEmpty()) { PsiType cur = set.iterator().next(); set.remove(cur); if (!map.containsValue(cur) && (min == null || TypesUtil.isAssignable(min, cur, manager, scope))) { if (isPartiallySubstituted(cur)) { LOG.assertTrue(cur instanceof PsiClassType); PsiClassType rawType = ((PsiClassType) cur).rawType(); map.put(rawType.getPresentableText(), rawType); } else { map.put(cur.getPresentableText(), cur); } for (PsiType superType : cur.getSuperTypes()) { if (!map.containsValue(superType)) { set.add(superType); } } } } return map; }