/**
* Looks for two standard decorators to a function, or a wrapping assignment that closely follows
* it.
*
* @return a flag describing what was detected.
*/
@Nullable
public Modifier getModifier() {
final String deconame = getClassOrStaticMethodDecorator();
if (PyNames.CLASSMETHOD.equals(deconame)) {
return CLASSMETHOD;
} else if (PyNames.STATICMETHOD.equals(deconame)) {
return STATICMETHOD;
}
// implicit staticmethod __new__
final PyClass cls = getContainingClass();
if (cls != null && PyNames.NEW.equals(getName()) && cls.isNewStyleClass(null)) {
return STATICMETHOD;
}
//
if (getStub() != null) {
return getWrappersFromStub();
}
final String funcName = getName();
if (funcName != null) {
PyAssignmentStatement currentAssignment =
PsiTreeUtil.getNextSiblingOfType(this, PyAssignmentStatement.class);
while (currentAssignment != null) {
final String modifier =
currentAssignment
.getTargetsToValuesMapping()
.stream()
.filter(
pair ->
pair.getFirst() instanceof PyTargetExpression
&& funcName.equals(pair.getFirst().getName()))
.filter(pair -> pair.getSecond() instanceof PyCallExpression)
.map(
pair ->
interpretAsModifierWrappingCall((PyCallExpression) pair.getSecond(), this))
.filter(interpreted -> interpreted != null && interpreted.getSecond() == this)
.map(interpreted -> interpreted.getFirst())
.filter(
wrapperName ->
PyNames.CLASSMETHOD.equals(wrapperName)
|| PyNames.STATICMETHOD.equals(wrapperName))
.findAny()
.orElse(null);
if (PyNames.CLASSMETHOD.equals(modifier)) {
return CLASSMETHOD;
} else if (PyNames.STATICMETHOD.equals(modifier)) {
return STATICMETHOD;
}
currentAssignment =
PsiTreeUtil.getNextSiblingOfType(currentAssignment, PyAssignmentStatement.class);
}
}
return null;
}
/**
* Looks for two standard decorators to a function, or a wrapping assignment that closely follows
* it.
*
* @return a flag describing what was detected.
*/
@Nullable
public Modifier getModifier() {
String deconame = getClassOrStaticMethodDecorator();
if (PyNames.CLASSMETHOD.equals(deconame)) {
return CLASSMETHOD;
} else if (PyNames.STATICMETHOD.equals(deconame)) {
return STATICMETHOD;
}
// implicit staticmethod __new__
PyClass cls = getContainingClass();
if (cls != null && PyNames.NEW.equals(getName()) && cls.isNewStyleClass()) {
return STATICMETHOD;
}
//
if (getStub() != null) {
return getWrappersFromStub();
}
String func_name = getName();
if (func_name != null) {
PyAssignmentStatement assignment =
PsiTreeUtil.getNextSiblingOfType(this, PyAssignmentStatement.class);
if (assignment != null) {
for (Pair<PyExpression, PyExpression> pair : assignment.getTargetsToValuesMapping()) {
PyExpression value = pair.getSecond();
if (value instanceof PyCallExpression) {
PyExpression target = pair.getFirst();
if (target instanceof PyTargetExpression && func_name.equals(target.getName())) {
Pair<String, PyFunction> interpreted =
interpretAsModifierWrappingCall((PyCallExpression) value, this);
if (interpreted != null) {
PyFunction original = interpreted.getSecond();
if (original == this) {
String wrapper_name = interpreted.getFirst();
if (PyNames.CLASSMETHOD.equals(wrapper_name)) {
return CLASSMETHOD;
} else if (PyNames.STATICMETHOD.equals(wrapper_name)) {
return STATICMETHOD;
}
}
}
}
}
}
}
}
return null;
}
/**
* When a function is decorated many decorators, finds the deepest builtin decorator:
*
* <pre>
* @foo
* @classmethod <b># <-- that's it</b>
* @bar
* def moo(cls):
* pass
* </pre>
*
* @return name of the built-in decorator, or null (even if there are non-built-in decorators).
*/
@Nullable
private String getClassOrStaticMethodDecorator() {
PyDecoratorList decolist = getDecoratorList();
if (decolist != null) {
PyDecorator[] decos = decolist.getDecorators();
if (decos.length > 0) {
for (int i = decos.length - 1; i >= 0; i -= 1) {
PyDecorator deco = decos[i];
String deconame = deco.getName();
if (PyNames.CLASSMETHOD.equals(deconame) || PyNames.STATICMETHOD.equals(deconame)) {
return deconame;
}
for (PyKnownDecoratorProvider provider :
PyUtil.KnownDecoratorProviderHolder.KNOWN_DECORATOR_PROVIDERS) {
String name = provider.toKnownDecorator(deconame);
if (name != null) {
return name;
}
}
}
}
}
return null;
}