@Nullable
public EncapsulateFieldUsageInfo createUsage(
@NotNull EncapsulateFieldsDescriptor descriptor,
@NotNull FieldDescriptor fieldDescriptor,
@NotNull PsiReference reference) {
if (!(reference instanceof PsiReferenceExpression)) return null;
boolean findSet = descriptor.isToEncapsulateSet();
boolean findGet = descriptor.isToEncapsulateGet();
PsiReferenceExpression ref = (PsiReferenceExpression) reference;
// [Jeka] to avoid recursion in the field's accessors
if (findGet
&& isUsedInExistingAccessor(
descriptor.getTargetClass(), fieldDescriptor.getGetterPrototype(), ref)) return null;
if (findSet
&& isUsedInExistingAccessor(
descriptor.getTargetClass(), fieldDescriptor.getSetterPrototype(), ref)) return null;
if (!findGet) {
if (!PsiUtil.isAccessedForWriting(ref)) return null;
}
if (!findSet || fieldDescriptor.getField().hasModifierProperty(PsiModifier.FINAL)) {
if (!PsiUtil.isAccessedForReading(ref)) return null;
}
if (!descriptor.isToUseAccessorsWhenAccessible()) {
PsiModifierList newModifierList = createNewModifierList(descriptor);
PsiClass accessObjectClass = null;
PsiExpression qualifier = ref.getQualifierExpression();
if (qualifier != null) {
accessObjectClass = (PsiClass) PsiUtil.getAccessObjectClass(qualifier).getElement();
}
final PsiResolveHelper helper =
JavaPsiFacade.getInstance(((PsiReferenceExpression) reference).getProject())
.getResolveHelper();
if (helper.isAccessible(
fieldDescriptor.getField(), newModifierList, ref, accessObjectClass, null)) {
return null;
}
}
return new EncapsulateFieldUsageInfo(ref, fieldDescriptor);
}
