@Nullable
private Ref<PyType> getTypeOfProperty(
@Nullable PyType qualifierType, @NotNull String name, @NotNull TypeEvalContext context) {
if (qualifierType instanceof PyClassType) {
final PyClassType classType = (PyClassType) qualifierType;
PyClass pyClass = classType.getPyClass();
Property property = pyClass.findProperty(name, true);
if (property != null) {
if (classType.isDefinition()) {
return Ref.<PyType>create(
PyBuiltinCache.getInstance(pyClass).getObjectType(PyNames.PROPERTY));
}
if (AccessDirection.of(this) == AccessDirection.READ) {
final PyType type = property.getType(context);
if (type != null) {
return Ref.create(type);
}
}
return Ref.create();
}
} else if (qualifierType instanceof PyUnionType) {
final PyUnionType unionType = (PyUnionType) qualifierType;
for (PyType type : unionType.getMembers()) {
final Ref<PyType> result = getTypeOfProperty(type, name, context);
if (result != null) {
return result;
}
}
}
return null;
}
private void checkExpression(PyQualifiedExpression node) {
final PyExpression qualifier = node.getQualifier();
if (qualifier != null) {
final PyType type = myTypeEvalContext.getType(qualifier);
if (type instanceof PyClassType) {
final PyClass cls = ((PyClassType) type).getPyClass();
final String name = node.getName();
if (name != null) {
final Pair<PyClass, String> key = new Pair<PyClass, String>(cls, name);
final Property property;
if (myPropertyCache.containsKey(key)) {
property = myPropertyCache.get(key);
} else {
property = cls.findProperty(name, true);
}
myPropertyCache.put(
key, property); // we store nulls, too, to know that a property does not exist
if (property != null) {
final AccessDirection dir = AccessDirection.of(node);
checkAccessor(node, name, dir, property);
if (dir == AccessDirection.READ) {
final PsiElement parent = node.getParent();
if (parent instanceof PyAugAssignmentStatement
&& ((PyAugAssignmentStatement) parent).getTarget() == node) {
checkAccessor(node, name, AccessDirection.WRITE, property);
}
}
}
}
}
}
}
private boolean buildFromProperty(
PsiElement elementDefinition,
@Nullable final PsiElement outerElement,
@NotNull final TypeEvalContext context) {
if (myOriginalElement == null) {
return false;
}
final String elementName = myOriginalElement.getText();
if (!PyNames.isIdentifier(elementName)) {
return false;
}
if (!(outerElement instanceof PyQualifiedExpression)) {
return false;
}
final PyExpression qualifier = ((PyQualifiedExpression) outerElement).getQualifier();
if (qualifier == null) {
return false;
}
final PyType type = context.getType(qualifier);
if (!(type instanceof PyClassType)) {
return false;
}
final PyClass cls = ((PyClassType) type).getPyClass();
final Property property = cls.findProperty(elementName, true, null);
if (property == null) {
return false;
}
final AccessDirection direction = AccessDirection.of((PyElement) outerElement);
final Maybe<PyCallable> accessor = property.getByDirection(direction);
myProlog
.addItem("property ")
.addWith(TagBold, $().addWith(TagCode, $(elementName)))
.addItem(" of ")
.add(PythonDocumentationProvider.describeClass(cls, TagCode, true, true));
if (accessor.isDefined() && property.getDoc() != null) {
myBody.addItem(": ").addItem(property.getDoc()).addItem(BR);
} else {
final PyCallable getter = property.getGetter().valueOrNull();
if (getter != null && getter != myElement && getter instanceof PyFunction) {
// not in getter, getter's doc comment may be useful
final PyStringLiteralExpression docstring = ((PyFunction) getter).getDocStringExpression();
if (docstring != null) {
myProlog
.addItem(BR)
.addWith(TagItalic, $("Copied from getter:"))
.addItem(BR)
.addItem(docstring.getStringValue());
}
}
myBody.addItem(BR);
}
myBody.addItem(BR);
if (accessor.isDefined() && accessor.value() == null) elementDefinition = null;
final String accessorKind = getAccessorKind(direction);
if (elementDefinition != null) {
myEpilog.addWith(TagSmall, $(BR, BR, accessorKind, " of property")).addItem(BR);
}
if (!(elementDefinition instanceof PyDocStringOwner)) {
myBody
.addWith(
TagItalic,
elementDefinition != null ? $("Declaration: ") : $(accessorKind + " is not defined."))
.addItem(BR);
if (elementDefinition != null) {
myBody.addItem(combUp(PyUtil.getReadableRepr(elementDefinition, false)));
}
}
return true;
}