@Nullable
public static PsiClass getSuperClass(@NotNull PsiClass psiClass) {
PsiManager manager = psiClass.getManager();
GlobalSearchScope resolveScope = psiClass.getResolveScope();
final JavaPsiFacade facade = JavaPsiFacade.getInstance(manager.getProject());
if (psiClass.isInterface()) {
return facade.findClass(CommonClassNames.JAVA_LANG_OBJECT, resolveScope);
}
if (psiClass.isEnum()) {
return facade.findClass(CommonClassNames.JAVA_LANG_ENUM, resolveScope);
}
if (psiClass instanceof PsiAnonymousClass) {
PsiClassType baseClassReference = ((PsiAnonymousClass) psiClass).getBaseClassType();
PsiClass baseClass = baseClassReference.resolve();
if (baseClass == null || baseClass.isInterface())
return facade.findClass(CommonClassNames.JAVA_LANG_OBJECT, resolveScope);
return baseClass;
}
if (CommonClassNames.JAVA_LANG_OBJECT.equals(psiClass.getQualifiedName())) return null;
final PsiClassType[] referenceElements = psiClass.getExtendsListTypes();
if (referenceElements.length == 0)
return facade.findClass(CommonClassNames.JAVA_LANG_OBJECT, resolveScope);
PsiClass psiResoved = referenceElements[0].resolve();
return psiResoved == null
? facade.findClass(CommonClassNames.JAVA_LANG_OBJECT, resolveScope)
: psiResoved;
}
public static boolean hasAccessibleConstructor(PsiType type) {
if (type instanceof PsiArrayType) return true;
final PsiClass psiClass = PsiUtil.resolveClassInType(type);
if (psiClass == null || psiClass.isEnum() || psiClass.isAnnotationType()) return false;
if (!(psiClass instanceof PsiCompiledElement)) return true;
final PsiMethod[] methods = psiClass.getConstructors();
if (methods.length == 0) return true;
for (final PsiMethod method : methods) {
if (!method.hasModifierProperty(PsiModifier.PRIVATE)) return true;
}
return false;
}
@NotNull
public static PsiClassType[] getExtendsListTypes(@NotNull PsiClass psiClass) {
if (psiClass.isEnum()) {
PsiClassType enumSuperType =
getEnumSuperType(
psiClass, JavaPsiFacade.getInstance(psiClass.getProject()).getElementFactory());
return enumSuperType == null ? PsiClassType.EMPTY_ARRAY : new PsiClassType[] {enumSuperType};
}
if (psiClass.isAnnotationType()) {
return new PsiClassType[] {
getAnnotationSuperType(
psiClass, JavaPsiFacade.getInstance(psiClass.getProject()).getElementFactory())
};
}
final PsiReferenceList extendsList = psiClass.getExtendsList();
if (extendsList != null) {
return extendsList.getReferencedTypes();
}
return PsiClassType.EMPTY_ARRAY;
}