private static JetType createErrorTypeWithCustomDebugName(
JetScope memberScope, String debugName) {
return new ErrorTypeImpl(
new TypeConstructorImpl(
ERROR_CLASS,
Collections.<AnnotationDescriptor>emptyList(),
false,
debugName,
Collections.<TypeParameterDescriptorImpl>emptyList(),
Collections.singleton(KotlinBuiltIns.getInstance().getAnyType())),
memberScope);
}
private void createTypeConstructors(@NotNull TopDownAnalysisContext c) {
for (Map.Entry<JetClassOrObject, ClassDescriptorWithResolutionScopes> entry :
c.getClasses().entrySet()) {
JetClassOrObject classOrObject = entry.getKey();
MutableClassDescriptor descriptor = (MutableClassDescriptor) entry.getValue();
if (classOrObject instanceof JetClass) {
descriptorResolver.resolveMutableClassDescriptor(
(JetClass) classOrObject, descriptor, trace);
} else if (classOrObject instanceof JetObjectDeclaration) {
descriptor.setModality(Modality.FINAL);
descriptor.setVisibility(
resolveVisibilityFromModifiers(classOrObject, getDefaultClassVisibility(descriptor)));
descriptor.setTypeParameterDescriptors(Collections.<TypeParameterDescriptor>emptyList());
}
descriptor.createTypeConstructor();
ClassKind kind = descriptor.getKind();
if (kind == ClassKind.ENUM_ENTRY
|| kind == ClassKind.OBJECT
|| kind == ClassKind.ENUM_CLASS) {
MutableClassDescriptorLite classObject = descriptor.getClassObjectDescriptor();
assert classObject != null
: "Enum entries and named objects should have class objects: "
+ classOrObject.getText();
JetType supertype;
if (kind == ClassKind.ENUM_CLASS) {
supertype = KotlinBuiltIns.getInstance().getAnyType();
} else {
// This is a clever hack: each enum entry and object declaration (i.e. singleton) has a
// synthetic class object.
// We make this class object inherit from the singleton here, thus allowing to use the
// singleton's class object where
// the instance of the singleton is applicable. Effectively all members of the singleton
// would be present in its class
// object as fake overrides, so you can access them via standard class object notation:
// ObjectName.memberName()
supertype = descriptor.getDefaultType();
}
classObject.setSupertypes(Collections.singleton(supertype));
classObject.createTypeConstructor();
}
}
}
@NotNull
@Override
public Set<FunctionDescriptor> getFunctions(@NotNull Name name) {
return Collections.<FunctionDescriptor>singleton(createErrorFunction(this));
}
public class ErrorUtils {
private static final ModuleDescriptor ERROR_MODULE =
new ModuleDescriptor(Name.special("<ERROR MODULE>"));
public static class ErrorScope implements JetScope {
private final String debugMessage;
private ErrorScope(String debugMessage) {
this.debugMessage = debugMessage;
}
@Override
public ClassifierDescriptor getClassifier(@NotNull Name name) {
return ERROR_CLASS;
}
@Override
public ClassDescriptor getObjectDescriptor(@NotNull Name name) {
return ERROR_CLASS;
}
@NotNull
@Override
public Set<ClassDescriptor> getObjectDescriptors() {
return Collections.emptySet();
}
@NotNull
@Override
public Set<VariableDescriptor> getProperties(@NotNull Name name) {
return ERROR_PROPERTY_GROUP;
}
@Override
public VariableDescriptor getLocalVariable(@NotNull Name name) {
return ERROR_PROPERTY;
}
@Override
public NamespaceDescriptor getNamespace(@NotNull Name name) {
return null; // TODO : review
}
@NotNull
@Override
public List<ReceiverParameterDescriptor> getImplicitReceiversHierarchy() {
return Collections.emptyList();
}
@NotNull
@Override
public Set<FunctionDescriptor> getFunctions(@NotNull Name name) {
return Collections.<FunctionDescriptor>singleton(createErrorFunction(this));
}
@NotNull
@Override
public DeclarationDescriptor getContainingDeclaration() {
return ERROR_MODULE;
}
@NotNull
@Override
public Collection<DeclarationDescriptor> getDeclarationsByLabel(LabelName labelName) {
return Collections.emptyList();
}
@Override
public PropertyDescriptor getPropertyByFieldReference(@NotNull Name fieldName) {
return null; // TODO : review
}
@NotNull
@Override
public Collection<DeclarationDescriptor> getAllDescriptors() {
return Collections.emptyList();
}
@NotNull
@Override
public Collection<DeclarationDescriptor> getOwnDeclaredDescriptors() {
return Collections.emptyList();
}
}
private static final ClassDescriptorImpl ERROR_CLASS =
new ClassDescriptorImpl(
ERROR_MODULE,
Collections.<AnnotationDescriptor>emptyList(),
Modality.OPEN,
Name.special("<ERROR CLASS>")) {
@NotNull
@Override
public Collection<ConstructorDescriptor> getConstructors() {
return ERROR_CONSTRUCTOR_GROUP;
}
@NotNull
@Override
public Modality getModality() {
return Modality.OPEN;
}
@NotNull
@Override
public ClassDescriptor substitute(@NotNull TypeSubstitutor substitutor) {
return ERROR_CLASS;
}
};
private static final Set<ConstructorDescriptor> ERROR_CONSTRUCTOR_GROUP =
Collections.singleton(createErrorConstructor(0, Collections.<JetType>emptyList()));
private static final ConstructorDescriptor ERROR_CONSTRUCTOR =
new ConstructorDescriptorImpl(
ERROR_CLASS, Collections.<AnnotationDescriptor>emptyList(), true);
static {
ERROR_CLASS.initialize(
true,
Collections.<TypeParameterDescriptor>emptyList(),
Collections.<JetType>emptyList(),
createErrorScope("ERROR_CLASS"),
ERROR_CONSTRUCTOR_GROUP,
ERROR_CONSTRUCTOR,
false);
}
public static JetScope createErrorScope(String debugMessage) {
return new ErrorScope(debugMessage);
}
private static final JetType ERROR_PROPERTY_TYPE = createErrorType("<ERROR PROPERTY TYPE>");
private static final VariableDescriptor ERROR_PROPERTY =
new PropertyDescriptorImpl(
ERROR_CLASS,
Collections.<AnnotationDescriptor>emptyList(),
Modality.OPEN,
Visibilities.INTERNAL,
true,
null,
ReceiverParameterDescriptor.NO_RECEIVER_PARAMETER,
Name.special("<ERROR PROPERTY>"),
ERROR_PROPERTY_TYPE,
CallableMemberDescriptor.Kind.DECLARATION);
private static final Set<VariableDescriptor> ERROR_PROPERTY_GROUP =
Collections.singleton(ERROR_PROPERTY);
private static SimpleFunctionDescriptor createErrorFunction(ErrorScope ownerScope) {
ErrorSimpleFunctionDescriptorImpl function = new ErrorSimpleFunctionDescriptorImpl(ownerScope);
function.initialize(
null,
ReceiverParameterDescriptor.NO_RECEIVER_PARAMETER,
Collections.<TypeParameterDescriptorImpl>emptyList(), // TODO
Collections.<ValueParameterDescriptor>emptyList(), // TODO
createErrorType("<ERROR FUNCTION RETURN TYPE>"),
Modality.OPEN,
Visibilities.INTERNAL,
/*isInline = */ false);
return function;
}
public static ConstructorDescriptor createErrorConstructor(
int typeParameterCount, List<JetType> positionedValueParameterTypes) {
ConstructorDescriptorImpl r =
new ConstructorDescriptorImpl(
ERROR_CLASS, Collections.<AnnotationDescriptor>emptyList(), false);
r.initialize(
Collections.<TypeParameterDescriptor>emptyList(), // TODO
Collections.<ValueParameterDescriptor>emptyList(), // TODO
Visibilities.INTERNAL);
r.setReturnType(createErrorType("<ERROR RETURN TYPE>"));
return r;
}
private static final JetType ERROR_PARAMETER_TYPE =
createErrorType("<ERROR VALUE_PARAMETER TYPE>");
private static List<ValueParameterDescriptor> getValueParameters(
FunctionDescriptor functionDescriptor, List<JetType> argumentTypes) {
List<ValueParameterDescriptor> result = new ArrayList<ValueParameterDescriptor>();
for (int i = 0, argumentTypesSize = argumentTypes.size(); i < argumentTypesSize; i++) {
result.add(
new ValueParameterDescriptorImpl(
functionDescriptor,
i,
Collections.<AnnotationDescriptor>emptyList(),
Name.special("<ERROR VALUE_PARAMETER>"),
ERROR_PARAMETER_TYPE,
false,
null));
}
return result;
}
@NotNull
public static JetType createErrorType(String debugMessage) {
return createErrorType(debugMessage, createErrorScope(debugMessage));
}
private static JetType createErrorType(String debugMessage, JetScope memberScope) {
return createErrorTypeWithCustomDebugName(memberScope, "[ERROR : " + debugMessage + "]");
}
@NotNull
public static JetType createErrorTypeWithCustomDebugName(String debugName) {
return createErrorTypeWithCustomDebugName(createErrorScope(debugName), debugName);
}
private static JetType createErrorTypeWithCustomDebugName(
JetScope memberScope, String debugName) {
return new ErrorTypeImpl(
new TypeConstructorImpl(
ERROR_CLASS,
Collections.<AnnotationDescriptor>emptyList(),
false,
debugName,
Collections.<TypeParameterDescriptorImpl>emptyList(),
Collections.singleton(KotlinBuiltIns.getInstance().getAnyType())),
memberScope);
}
public static JetType createWrongVarianceErrorType(TypeProjection value) {
return createErrorType(value + " is not allowed here", value.getType().getMemberScope());
}
public static ClassifierDescriptor getErrorClass() {
return ERROR_CLASS;
}
public static boolean isError(@NotNull TypeConstructor typeConstructor) {
return typeConstructor == ERROR_CLASS.getTypeConstructor();
}
public static boolean isErrorType(@NotNull JetType type) {
return type != TypeUtils.NO_EXPECTED_TYPE
&& !(type instanceof NamespaceType)
&& ((type instanceof DeferredType
&& (((DeferredType) type).getActualType() == null
|| isErrorType(((DeferredType) type).getActualType())))
|| type instanceof ErrorTypeImpl
|| isError(type.getConstructor()));
}
public static boolean containsErrorType(@Nullable JetType type) {
if (type == null) return false;
if (type instanceof NamespaceType) return false;
if (isErrorType(type)) return true;
for (TypeProjection projection : type.getArguments()) {
if (containsErrorType(projection.getType())) return true;
}
return false;
}
public static boolean isError(@NotNull DeclarationDescriptor candidate) {
return candidate == getErrorClass()
|| candidate.getContainingDeclaration() == getErrorClass()
|| candidate == ERROR_MODULE;
}
private static class ErrorTypeImpl implements JetType {
private final TypeConstructor constructor;
private final JetScope memberScope;
private ErrorTypeImpl(TypeConstructor constructor, JetScope memberScope) {
this.constructor = constructor;
this.memberScope = memberScope;
}
@NotNull
@Override
public TypeConstructor getConstructor() {
return constructor;
}
@NotNull
@Override
public List<TypeProjection> getArguments() {
return Collections.emptyList();
}
@Override
public boolean isNullable() {
return false;
}
@NotNull
@Override
public JetScope getMemberScope() {
return memberScope;
}
@Override
public List<AnnotationDescriptor> getAnnotations() {
return Collections.emptyList();
}
@Override
public String toString() {
return constructor.toString();
}
}
private ErrorUtils() {}
}