@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;
}
@NotNull
public static PsiClass[] getInterfaces(@NotNull PsiClass psiClass) {
if (psiClass.isInterface()) {
final PsiClassType[] extendsListTypes = psiClass.getExtendsListTypes();
return resolveClassReferenceList(
extendsListTypes, psiClass.getManager(), psiClass.getResolveScope(), false);
}
if (psiClass instanceof PsiAnonymousClass) {
PsiClassType baseClassReference = ((PsiAnonymousClass) psiClass).getBaseClassType();
PsiClass baseClass = baseClassReference.resolve();
return baseClass != null && baseClass.isInterface()
? new PsiClass[] {baseClass}
: PsiClass.EMPTY_ARRAY;
}
final PsiClassType[] implementsListTypes = psiClass.getImplementsListTypes();
return resolveClassReferenceList(
implementsListTypes, psiClass.getManager(), psiClass.getResolveScope(), false);
}
@NotNull
public static PsiClassType[] getSuperTypes(@NotNull PsiClass psiClass) {
if (psiClass instanceof PsiAnonymousClass) {
PsiClassType baseClassType = ((PsiAnonymousClass) psiClass).getBaseClassType();
PsiClass baseClass = baseClassType.resolve();
if (baseClass == null || !baseClass.isInterface()) {
return new PsiClassType[] {baseClassType};
} else {
PsiClassType objectType =
PsiType.getJavaLangObject(psiClass.getManager(), psiClass.getResolveScope());
return new PsiClassType[] {objectType, baseClassType};
}
}
PsiClassType[] extendsTypes = psiClass.getExtendsListTypes();
PsiClassType[] implementsTypes = psiClass.getImplementsListTypes();
boolean hasExtends = extendsTypes.length != 0;
int extendsListLength = extendsTypes.length + (hasExtends ? 0 : 1);
PsiClassType[] result = new PsiClassType[extendsListLength + implementsTypes.length];
System.arraycopy(extendsTypes, 0, result, 0, extendsTypes.length);
if (!hasExtends) {
if (CommonClassNames.JAVA_LANG_OBJECT.equals(psiClass.getQualifiedName())) {
return PsiClassType.EMPTY_ARRAY;
}
PsiManager manager = psiClass.getManager();
PsiClassType objectType = PsiType.getJavaLangObject(manager, psiClass.getResolveScope());
result[0] = objectType;
}
System.arraycopy(implementsTypes, 0, result, extendsListLength, implementsTypes.length);
for (int i = 0; i < result.length; i++) {
PsiClassType type = result[i];
result[i] = (PsiClassType) PsiUtil.captureToplevelWildcards(type, psiClass);
}
return result;
}
@NotNull
private static PsiClass[] getSupersInner(@NotNull PsiClass psiClass) {
PsiClassType[] extendsListTypes = psiClass.getExtendsListTypes();
PsiClassType[] implementsListTypes = psiClass.getImplementsListTypes();
if (psiClass.isInterface()) {
return resolveClassReferenceList(
extendsListTypes, psiClass.getManager(), psiClass.getResolveScope(), true);
}
if (psiClass instanceof PsiAnonymousClass) {
PsiAnonymousClass psiAnonymousClass = (PsiAnonymousClass) psiClass;
PsiClassType baseClassReference = psiAnonymousClass.getBaseClassType();
PsiClass baseClass = baseClassReference.resolve();
if (baseClass != null) {
if (baseClass.isInterface()) {
PsiClass objectClass =
JavaPsiFacade.getInstance(psiClass.getProject())
.findClass(CommonClassNames.JAVA_LANG_OBJECT, psiClass.getResolveScope());
return objectClass != null
? new PsiClass[] {objectClass, baseClass}
: new PsiClass[] {baseClass};
}
return new PsiClass[] {baseClass};
}
PsiClass objectClass =
JavaPsiFacade.getInstance(psiClass.getProject())
.findClass(CommonClassNames.JAVA_LANG_OBJECT, psiClass.getResolveScope());
return objectClass != null ? new PsiClass[] {objectClass} : PsiClass.EMPTY_ARRAY;
}
if (psiClass instanceof PsiTypeParameter) {
if (extendsListTypes.length == 0) {
final PsiClass objectClass =
JavaPsiFacade.getInstance(psiClass.getProject())
.findClass(CommonClassNames.JAVA_LANG_OBJECT, psiClass.getResolveScope());
return objectClass != null ? new PsiClass[] {objectClass} : PsiClass.EMPTY_ARRAY;
}
return resolveClassReferenceList(
extendsListTypes, psiClass.getManager(), psiClass.getResolveScope(), false);
}
PsiClass[] interfaces =
resolveClassReferenceList(
implementsListTypes, psiClass.getManager(), psiClass.getResolveScope(), false);
PsiClass superClass = getSuperClass(psiClass);
if (superClass == null) return interfaces;
PsiClass[] types = new PsiClass[interfaces.length + 1];
types[0] = superClass;
System.arraycopy(interfaces, 0, types, 1, interfaces.length);
return types;
}
private static PsiClassType getEnumSuperType(
@NotNull PsiClass psiClass, @NotNull PsiElementFactory factory) {
PsiClassType superType;
final PsiManager manager = psiClass.getManager();
final PsiClass enumClass =
JavaPsiFacade.getInstance(manager.getProject())
.findClass("java.lang.Enum", psiClass.getResolveScope());
if (enumClass == null) {
try {
superType = (PsiClassType) factory.createTypeFromText("java.lang.Enum", null);
} catch (IncorrectOperationException e) {
superType = null;
}
} else {
final PsiTypeParameter[] typeParameters = enumClass.getTypeParameters();
PsiSubstitutor substitutor = PsiSubstitutor.EMPTY;
if (typeParameters.length == 1) {
substitutor = substitutor.put(typeParameters[0], factory.createType(psiClass));
}
superType = new PsiImmediateClassType(enumClass, substitutor);
}
return superType;
}
@NotNull
private static PsiClassType getAnnotationSuperType(
@NotNull PsiClass psiClass, @NotNull PsiElementFactory factory) {
return factory.createTypeByFQClassName(
"java.lang.annotation.Annotation", psiClass.getResolveScope());
}
