@Nullable
public static PyType getType(@NotNull PsiElement resolved, @NotNull List<PyType> elementTypes) {
final String qualifiedName = getQualifiedName(resolved);
final List<Integer> paramListTypePositions = new ArrayList<>();
final List<Integer> ellipsisTypePositions = new ArrayList<>();
for (int i = 0; i < elementTypes.size(); i++) {
final PyType type = elementTypes.get(i);
if (type instanceof PyTypeParser.ParameterListType) {
paramListTypePositions.add(i);
} else if (type instanceof PyTypeParser.EllipsisType) {
ellipsisTypePositions.add(i);
}
}
if (!paramListTypePositions.isEmpty()) {
if (!("typing.Callable".equals(qualifiedName) && paramListTypePositions.equals(list(0)))) {
return null;
}
}
if (!ellipsisTypePositions.isEmpty()) {
if (!("typing.Callable".equals(qualifiedName) && ellipsisTypePositions.equals(list(0))
|| "typing.Tuple".equals(qualifiedName)
&& ellipsisTypePositions.equals(list(1))
&& elementTypes.size() == 2)) {
return null;
}
}
if ("typing.Union".equals(qualifiedName)) {
return PyUnionType.union(elementTypes);
}
if ("typing.Optional".equals(qualifiedName) && elementTypes.size() == 1) {
return PyUnionType.union(elementTypes.get(0), PyNoneType.INSTANCE);
}
if ("typing.Callable".equals(qualifiedName) && elementTypes.size() == 2) {
final PyTypeParser.ParameterListType paramList =
as(elementTypes.get(0), PyTypeParser.ParameterListType.class);
if (paramList != null) {
return new PyCallableTypeImpl(paramList.getCallableParameters(), elementTypes.get(1));
}
if (elementTypes.get(0) instanceof PyTypeParser.EllipsisType) {
return new PyCallableTypeImpl(null, elementTypes.get(1));
}
}
if ("typing.Tuple".equals(qualifiedName)) {
if (elementTypes.size() > 1 && elementTypes.get(1) instanceof PyTypeParser.EllipsisType) {
return PyTupleType.createHomogeneous(resolved, elementTypes.get(0));
}
return PyTupleType.create(resolved, elementTypes);
}
final PyType builtinCollection = getBuiltinCollection(resolved);
if (builtinCollection instanceof PyClassType) {
final PyClassType classType = (PyClassType) builtinCollection;
return new PyCollectionTypeImpl(classType.getPyClass(), false, elementTypes);
}
return null;
}
