PsiElementVisitor (@NotNull final ProblemsHolder holder, final boolean isOnTheFly) { final Project project = holder.getProject(); Pair<PsiMethod, PsiMethod> pair = CachedValuesManager.getManager(project).getCachedValue(project, () -> { final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project); final PsiClass psiObjectClass = ReadAction .compute(() -> psiFacade.findClass(CommonClassNames.JAVA_LANG_OBJECT, GlobalSearchScope.allScope(project))); if (psiObjectClass == null) { return CachedValueProvider.Result.create(null, ProjectRootManager.getInstance(project)); } PsiMethod[] methods = psiObjectClass.getMethods(); PsiMethod myEquals = null; PsiMethod myHashCode = null; for (PsiMethod method : methods) { @NonNls final String name = method.getName(); if ("equals".equals(name)) { myEquals = method; } else if ("hashCode".equals(name)) { myHashCode = method; } } return CachedValueProvider.Result.create(Pair.create(myEquals, myHashCode), psiObjectClass); }); if (pair == null) return PsiElementVisitor.EMPTY_VISITOR; //jdk wasn't configured for the project final PsiMethod myEquals = pair.first; final PsiMethod myHashCode = pair.second; if (myEquals == null || myHashCode == null || !myEquals.isValid() || !myHashCode.isValid()) return PsiElementVisitor.EMPTY_VISITOR; return new JavaElementVisitor() { @Override public void visitClass(@NotNull PsiClass aClass) { super.visitClass(aClass); boolean [] hasEquals = {false}; boolean [] hasHashCode = {false}; processClass(aClass, hasEquals, hasHashCode, myEquals, myHashCode); if (hasEquals[0] != hasHashCode[0]) { if (hasHashCode[0] && aClass.isRecord()) { // Probably better distributed hashCode is implemented for a record class where default equals works fine return; } PsiIdentifier identifier = aClass.getNameIdentifier(); holder.registerProblem(identifier != null ? identifier : aClass, hasEquals[0] ? JavaAnalysisBundle.message("inspection.equals.hashcode.only.one.defined.problem.descriptor", "<code>equals()</code>", "<code>hashCode()</code>") : JavaAnalysisBundle.message("inspection.equals.hashcode.only.one.defined.problem.descriptor","<code>hashCode()</code>", "<code>equals()</code>"), buildFixes(isOnTheFly, hasEquals[0])); } } }; }