private static boolean isAbstract(@NotNull PyClass pyClass) {
final PyType metaClass =
pyClass.getMetaClassType(
TypeEvalContext.userInitiated(pyClass.getProject(), pyClass.getContainingFile()));
if (metaClass instanceof PyClassLikeType
&& PyNames.ABC_META_CLASS.equals(metaClass.getName())) {
return true;
}
if (metaClass == null) {
final PyExpression metaClassExpr =
as(pyClass.getMetaClassExpression(), PyReferenceExpression.class);
if (metaClassExpr != null && PyNames.ABC_META_CLASS.equals(metaClassExpr.getName())) {
return true;
}
}
for (PyFunction method : pyClass.getMethods(false)) {
if (PyUtil.isDecoratedAsAbstract(method)) {
return true;
}
}
return false;
}
// TODO: Copy/Paste with PyClass.getMeta..
private static boolean addMetaAbcIfNeeded(@NotNull final PyClass aClass) {
final PsiFile file = aClass.getContainingFile();
final PyType type = aClass.getMetaClassType(TypeEvalContext.userInitiated(file));
if (type != null) {
return false; // User already has metaclass. He probably knows about metaclasses, so we should
// not add ABCMeta
}
final LanguageLevel languageLevel = LanguageLevel.forElement(aClass);
if (languageLevel
.isPy3K()) { // TODO: Copy/paste, use strategy because we already has the same check in
// #couldBeAbstract
// Add (metaclass= for Py3K
PyClassRefactoringUtil.addSuperClassExpressions(
aClass.getProject(),
aClass,
null,
Collections.singletonList(Pair.create(PyNames.METACLASS, ABC_META_CLASS)));
} else {
// Add __metaclass__ for Py2
PyClassRefactoringUtil.addClassAttributeIfNotExist(
aClass, PyNames.DUNDER_METACLASS, ABC_META_CLASS);
}
return true;
}