@NotNull
private JetType modifyTypeAccordingToSuperMethods(
@NotNull JetType autoType,
@NotNull List<TypeAndVariance> typesFromSuper,
@NotNull TypeUsage howThisTypeIsUsed) {
if (ErrorUtils.isErrorType(autoType)) {
return autoType;
}
boolean resultNullable = typeMustBeNullable(autoType, typesFromSuper, howThisTypeIsUsed);
ClassifierDescriptor resultClassifier = modifyTypeClassifier(autoType, typesFromSuper);
List<TypeProjection> resultArguments =
getTypeArgsOfType(autoType, resultClassifier, typesFromSuper);
JetScope resultScope;
if (resultClassifier instanceof ClassDescriptor) {
resultScope = ((ClassDescriptor) resultClassifier).getMemberScope(resultArguments);
} else {
resultScope = autoType.getMemberScope();
}
JetTypeImpl type =
new JetTypeImpl(
autoType.getAnnotations(),
resultClassifier.getTypeConstructor(),
resultNullable,
resultArguments,
resultScope);
PropagationHeuristics.checkArrayInReturnType(this, type, typesFromSuper);
return type;
}
@NotNull
private List<TypeProjection> getTypeArgsOfType(
@NotNull JetType autoType,
@NotNull ClassifierDescriptor classifier,
@NotNull List<TypeAndVariance> typesFromSuper) {
List<TypeProjection> autoArguments = autoType.getArguments();
if (!(classifier instanceof ClassDescriptor)) {
assert autoArguments.isEmpty()
: "Unexpected type arguments when type constructor is not ClassDescriptor, type = "
+ autoType;
return autoArguments;
}
List<List<TypeProjectionAndVariance>> typeArgumentsFromSuper =
calculateTypeArgumentsFromSuper((ClassDescriptor) classifier, typesFromSuper);
// Modify type arguments using info from typesFromSuper
List<TypeProjection> resultArguments = Lists.newArrayList();
for (TypeParameterDescriptor parameter : classifier.getTypeConstructor().getParameters()) {
TypeProjection argument = autoArguments.get(parameter.getIndex());
JetType argumentType = argument.getType();
List<TypeProjectionAndVariance> projectionsFromSuper =
typeArgumentsFromSuper.get(parameter.getIndex());
List<TypeAndVariance> argTypesFromSuper = getTypes(projectionsFromSuper);
JetType type =
modifyTypeAccordingToSuperMethods(argumentType, argTypesFromSuper, TYPE_ARGUMENT);
Variance projectionKind =
calculateArgumentProjectionKindFromSuper(argument, projectionsFromSuper);
resultArguments.add(new TypeProjection(projectionKind, type));
}
return resultArguments;
}
