private static boolean isInlinableParameter(@NotNull CallableDescriptor descriptor) {
JetType type = descriptor.getReturnType();
return type != null
&& KotlinBuiltIns.isExactFunctionOrExtensionFunctionType(type)
&& !type.isMarkedNullable()
&& !InlineUtil.hasNoinlineAnnotation(descriptor);
}
public boolean isMain(@NotNull JetNamedFunction function) {
if (!"main".equals(function.getName())) return false;
FunctionDescriptor functionDescriptor = getFunctionDescriptor.fun(function);
List<ValueParameterDescriptor> parameters = functionDescriptor.getValueParameters();
if (parameters.size() != 1) return false;
ValueParameterDescriptor parameter = parameters.get(0);
JetType parameterType = parameter.getType();
if (!KotlinBuiltIns.isArray(parameterType)) return false;
List<TypeProjection> typeArguments = parameterType.getArguments();
if (typeArguments.size() != 1) return false;
JetType typeArgument = typeArguments.get(0).getType();
if (!JetTypeChecker.DEFAULT.equalTypes(
typeArgument, getBuiltIns(functionDescriptor).getStringType())) return false;
if (DescriptorUtils.isTopLevelDeclaration(functionDescriptor)) return true;
DeclarationDescriptor containingDeclaration = functionDescriptor.getContainingDeclaration();
return containingDeclaration instanceof ClassDescriptor
&& ((ClassDescriptor) containingDeclaration).getKind().isSingleton()
&& AnnotationsPackage.hasPlatformStaticAnnotation(functionDescriptor);
}
private static boolean areTypesEquivalent(
@NotNull JetType typeInSuper,
@NotNull JetType typeInSub,
@NotNull JetTypeChecker.TypeConstructorEquality axioms) {
boolean bothErrors = typeInSuper.isError() && typeInSub.isError();
if (!bothErrors && !JetTypeChecker.withAxioms(axioms).equalTypes(typeInSuper, typeInSub)) {
return false;
}
return true;
}
static JetType getUpperBound(JetType type) {
if (type.getConstructor().getDeclarationDescriptor() instanceof ClassDescriptor) {
return type;
} else if (type.getConstructor().getDeclarationDescriptor()
instanceof TypeParameterDescriptor) {
return ((TypeParameterDescriptor) type.getConstructor().getDeclarationDescriptor())
.getUpperBoundsAsType();
} else {
throw new IllegalStateException(
"unknown type constructor: " + type.getConstructor().getClass().getName());
}
}
@NotNull
public JetType getArrayElementType(@NotNull JetType arrayType) {
if (isArray(arrayType)) {
if (arrayType.getArguments().size() != 1) {
throw new IllegalStateException();
}
return arrayType.getArguments().get(0).getType();
}
JetType primitiveType =
jetArrayTypeToPrimitiveJetType.get(TypeUtils.makeNotNullable(arrayType));
if (primitiveType == null) {
throw new IllegalStateException("not array: " + arrayType);
}
return primitiveType;
}
public ClosureCodegen(
@NotNull GenerationState state,
@NotNull JetElement element,
@Nullable SamType samType,
@NotNull ClosureContext context,
@NotNull KotlinSyntheticClass.Kind syntheticClassKind,
@NotNull FunctionGenerationStrategy strategy,
@NotNull MemberCodegen<?> parentCodegen,
@NotNull ClassBuilder classBuilder) {
super(state, parentCodegen, context, element, classBuilder);
this.funDescriptor = context.getFunctionDescriptor();
this.classDescriptor = context.getContextDescriptor();
this.samType = samType;
this.syntheticClassKind = syntheticClassKind;
this.strategy = strategy;
if (samType == null) {
this.superInterfaceTypes = new ArrayList<JetType>();
JetType superClassType = null;
for (JetType supertype : classDescriptor.getTypeConstructor().getSupertypes()) {
ClassifierDescriptor classifier = supertype.getConstructor().getDeclarationDescriptor();
if (DescriptorUtils.isTrait(classifier)) {
superInterfaceTypes.add(supertype);
} else {
assert superClassType == null
: "Closure class can't have more than one superclass: " + funDescriptor;
superClassType = supertype;
}
}
assert superClassType != null : "Closure class should have a superclass: " + funDescriptor;
this.superClassType = superClassType;
} else {
this.superInterfaceTypes = Collections.singletonList(samType.getType());
this.superClassType = getBuiltIns(funDescriptor).getAnyType();
}
this.closure = bindingContext.get(CLOSURE, classDescriptor);
assert closure != null : "Closure must be calculated for class: " + classDescriptor;
this.asmType = typeMapper.mapClass(classDescriptor);
visibilityFlag = AsmUtil.getVisibilityAccessFlagForAnonymous(classDescriptor);
}
@Nullable
public static JetType getReceiverType(@NotNull JetType type) {
assert isFunctionOrExtensionFunctionType(type) : type;
if (isExtensionFunctionType(type)) {
return type.getArguments().get(0).getType();
}
return null;
}
public static boolean isExtensionFunctionType(@NotNull JetType type) {
if (isExactExtensionFunctionType(type)) return true;
for (JetType superType : type.getConstructor().getSupertypes()) {
if (isExtensionFunctionType(superType)) return true;
}
return false;
}
private static boolean isTypeConstructorFqNameInSet(
@NotNull JetType type, @NotNull Set<FqNameUnsafe> classes) {
ClassifierDescriptor declarationDescriptor = type.getConstructor().getDeclarationDescriptor();
if (declarationDescriptor == null) return false;
FqNameUnsafe fqName = DescriptorUtils.getFqName(declarationDescriptor);
return classes.contains(fqName);
}
private void checkEnumEntry(
@NotNull JetEnumEntry enumEntry, @NotNull ClassDescriptor classDescriptor) {
DeclarationDescriptor declaration = classDescriptor.getContainingDeclaration();
assert DescriptorUtils.isEnumClass(declaration)
: "Enum entry should be declared in enum class: " + classDescriptor;
ClassDescriptor enumClass = (ClassDescriptor) declaration;
if (enumEntryUsesDeprecatedSuperConstructor(enumEntry)) {
trace.report(
Errors.ENUM_ENTRY_USES_DEPRECATED_SUPER_CONSTRUCTOR.on(enumEntry, classDescriptor));
}
String neededDelimiter = enumEntryExpectedDelimiter(enumEntry);
if (!neededDelimiter.isEmpty()) {
trace.report(
Errors.ENUM_ENTRY_USES_DEPRECATED_OR_NO_DELIMITER.on(
enumEntry, classDescriptor, neededDelimiter));
}
if (enumEntryAfterEnumMember(enumEntry)) {
trace.report(Errors.ENUM_ENTRY_AFTER_ENUM_MEMBER.on(enumEntry, classDescriptor));
}
List<JetDelegationSpecifier> delegationSpecifiers = enumEntry.getDelegationSpecifiers();
ConstructorDescriptor constructor = enumClass.getUnsubstitutedPrimaryConstructor();
if ((constructor == null || !constructor.getValueParameters().isEmpty())
&& delegationSpecifiers.isEmpty()) {
trace.report(ENUM_ENTRY_SHOULD_BE_INITIALIZED.on(enumEntry, enumClass));
}
for (JetDelegationSpecifier delegationSpecifier : delegationSpecifiers) {
JetTypeReference typeReference = delegationSpecifier.getTypeReference();
if (typeReference != null) {
JetType type = trace.getBindingContext().get(TYPE, typeReference);
if (type != null) {
JetType enumType = enumClass.getDefaultType();
if (!type.getConstructor().equals(enumType.getConstructor())) {
trace.report(ENUM_ENTRY_ILLEGAL_TYPE.on(typeReference, enumClass));
}
}
}
}
}
@NotNull
public static List<TypeProjection> getParameterTypeProjectionsFromFunctionType(
@NotNull JetType type) {
assert isFunctionOrExtensionFunctionType(type);
List<TypeProjection> arguments = type.getArguments();
int first = isExtensionFunctionType(type) ? 1 : 0;
int last = arguments.size() - 2;
List<TypeProjection> parameterTypes = new ArrayList<TypeProjection>(last - first + 1);
for (int i = first; i <= last; i++) {
parameterTypes.add(arguments.get(i));
}
return parameterTypes;
}
public static boolean isNullableAny(@NotNull JetType type) {
return isAnyOrNullableAny(type) && type.isMarkedNullable();
}
public static boolean isNullableNothing(@NotNull JetType type) {
return isNothingOrNullableNothing(type) && type.isMarkedNullable();
}
private static boolean isNotNullConstructedFromGivenClass(
@NotNull JetType type, @NotNull FqNameUnsafe fqName) {
return !type.isMarkedNullable() && isConstructedFromGivenClass(type, fqName);
}
private static boolean isConstructedFromGivenClass(
@NotNull JetType type, @NotNull FqNameUnsafe fqName) {
ClassifierDescriptor descriptor = type.getConstructor().getDeclarationDescriptor();
return descriptor != null && fqName.equals(DescriptorUtils.getFqName(descriptor));
}
@NotNull
public static JetType getReturnTypeFromFunctionType(@NotNull JetType type) {
assert isFunctionOrExtensionFunctionType(type);
List<TypeProjection> arguments = type.getArguments();
return arguments.get(arguments.size() - 1).getType();
}
@NotNull
private OverrideCompatibilityInfo isOverridableBy(
@NotNull CallableDescriptor superDescriptor,
@NotNull CallableDescriptor subDescriptor,
boolean checkReturnType) {
if (superDescriptor instanceof FunctionDescriptor) {
if (!(subDescriptor instanceof FunctionDescriptor))
return OverrideCompatibilityInfo.memberKindMismatch();
} else if (superDescriptor instanceof PropertyDescriptor) {
if (!(subDescriptor instanceof PropertyDescriptor))
return OverrideCompatibilityInfo.memberKindMismatch();
} else {
throw new IllegalArgumentException(
"This type of CallableDescriptor cannot be checked for overridability: "
+ superDescriptor);
}
// TODO: check outside of this method
if (!superDescriptor.getName().equals(subDescriptor.getName())) {
return OverrideCompatibilityInfo.nameMismatch();
}
OverrideCompatibilityInfo receiverAndParameterResult =
checkReceiverAndParameterCount(superDescriptor, subDescriptor);
if (receiverAndParameterResult != null) {
return receiverAndParameterResult;
}
List<JetType> superValueParameters = compiledValueParameters(superDescriptor);
List<JetType> subValueParameters = compiledValueParameters(subDescriptor);
List<TypeParameterDescriptor> superTypeParameters = superDescriptor.getTypeParameters();
List<TypeParameterDescriptor> subTypeParameters = subDescriptor.getTypeParameters();
if (superTypeParameters.size() != subTypeParameters.size()) {
for (int i = 0; i < superValueParameters.size(); ++i) {
JetType superValueParameterType = getUpperBound(superValueParameters.get(i));
JetType subValueParameterType = getUpperBound(subValueParameters.get(i));
// TODO: compare erasure
if (!JetTypeChecker.DEFAULT.equalTypes(superValueParameterType, subValueParameterType)) {
return OverrideCompatibilityInfo.typeParameterNumberMismatch();
}
}
return OverrideCompatibilityInfo.valueParameterTypeMismatch(
null, null, OverrideCompatibilityInfo.Result.CONFLICT);
}
final Map<TypeConstructor, TypeConstructor> matchingTypeConstructors =
new HashMap<TypeConstructor, TypeConstructor>();
for (int i = 0, typeParametersSize = superTypeParameters.size(); i < typeParametersSize; i++) {
TypeParameterDescriptor superTypeParameter = superTypeParameters.get(i);
TypeParameterDescriptor subTypeParameter = subTypeParameters.get(i);
matchingTypeConstructors.put(
superTypeParameter.getTypeConstructor(), subTypeParameter.getTypeConstructor());
}
JetTypeChecker.TypeConstructorEquality localEqualityAxioms =
new JetTypeChecker.TypeConstructorEquality() {
@Override
public boolean equals(@NotNull TypeConstructor a, @NotNull TypeConstructor b) {
if (equalityAxioms.equals(a, b)) return true;
TypeConstructor img1 = matchingTypeConstructors.get(a);
TypeConstructor img2 = matchingTypeConstructors.get(b);
if (!(img1 != null && img1.equals(b)) && !(img2 != null && img2.equals(a))) {
return false;
}
return true;
}
};
for (int i = 0, typeParametersSize = superTypeParameters.size(); i < typeParametersSize; i++) {
TypeParameterDescriptor superTypeParameter = superTypeParameters.get(i);
TypeParameterDescriptor subTypeParameter = subTypeParameters.get(i);
if (!areTypesEquivalent(
superTypeParameter.getUpperBoundsAsType(),
subTypeParameter.getUpperBoundsAsType(),
localEqualityAxioms)) {
return OverrideCompatibilityInfo.boundsMismatch(superTypeParameter, subTypeParameter);
}
}
for (int i = 0, unsubstitutedValueParametersSize = superValueParameters.size();
i < unsubstitutedValueParametersSize;
i++) {
JetType superValueParameter = superValueParameters.get(i);
JetType subValueParameter = subValueParameters.get(i);
if (!areTypesEquivalent(superValueParameter, subValueParameter, localEqualityAxioms)) {
return OverrideCompatibilityInfo.valueParameterTypeMismatch(
superValueParameter, subValueParameter, INCOMPATIBLE);
}
}
if (checkReturnType) {
JetType superReturnType = superDescriptor.getReturnType();
JetType subReturnType = subDescriptor.getReturnType();
if (superReturnType != null && subReturnType != null) {
boolean bothErrors = subReturnType.isError() && superReturnType.isError();
if (!bothErrors
&& !JetTypeChecker.withAxioms(localEqualityAxioms)
.isSubtypeOf(subReturnType, superReturnType)) {
return OverrideCompatibilityInfo.returnTypeMismatch(superReturnType, subReturnType);
}
}
}
for (ExternalOverridabilityCondition externalCondition : EXTERNAL_CONDITIONS) {
if (!externalCondition.isOverridable(superDescriptor, subDescriptor)) {
return OverrideCompatibilityInfo.externalConditionFailed(externalCondition.getClass());
}
}
return OverrideCompatibilityInfo.success();
}
private void checkSupertypeList(
@NotNull ClassDescriptor supertypeOwner,
@NotNull Map<JetTypeReference, JetType> supertypes,
@NotNull JetClassOrObject jetClass) {
Set<TypeConstructor> allowedFinalSupertypes =
getAllowedFinalSupertypes(supertypeOwner, jetClass);
Set<TypeConstructor> typeConstructors = Sets.newHashSet();
boolean classAppeared = false;
for (Map.Entry<JetTypeReference, JetType> entry : supertypes.entrySet()) {
JetTypeReference typeReference = entry.getKey();
JetType supertype = entry.getValue();
boolean addSupertype = true;
ClassDescriptor classDescriptor = TypeUtils.getClassDescriptor(supertype);
if (classDescriptor != null) {
if (ErrorUtils.isError(classDescriptor)) continue;
if (classDescriptor.getKind() != ClassKind.INTERFACE) {
if (supertypeOwner.getKind() == ClassKind.ENUM_CLASS) {
trace.report(CLASS_IN_SUPERTYPE_FOR_ENUM.on(typeReference));
addSupertype = false;
} else if (supertypeOwner.getKind() == ClassKind.INTERFACE
&& !classAppeared
&& !TypesPackage.isDynamic(supertype) /* avoid duplicate diagnostics */) {
trace.report(TRAIT_WITH_SUPERCLASS.on(typeReference));
addSupertype = false;
}
if (classAppeared) {
trace.report(MANY_CLASSES_IN_SUPERTYPE_LIST.on(typeReference));
} else {
classAppeared = true;
}
}
} else {
trace.report(SUPERTYPE_NOT_A_CLASS_OR_TRAIT.on(typeReference));
}
TypeConstructor constructor = supertype.getConstructor();
if (addSupertype && !typeConstructors.add(constructor)) {
trace.report(SUPERTYPE_APPEARS_TWICE.on(typeReference));
}
if (DescriptorUtils.isSingleton(classDescriptor)) {
trace.report(SINGLETON_IN_SUPERTYPE.on(typeReference));
} else if (constructor.isFinal() && !allowedFinalSupertypes.contains(constructor)) {
if (classDescriptor.getModality() == Modality.SEALED) {
DeclarationDescriptor containingDescriptor = supertypeOwner.getContainingDeclaration();
while (containingDescriptor != null && containingDescriptor != classDescriptor) {
containingDescriptor = containingDescriptor.getContainingDeclaration();
}
if (containingDescriptor == null) {
trace.report(SEALED_SUPERTYPE.on(typeReference));
} else {
trace.report(SEALED_SUPERTYPE_IN_LOCAL_CLASS.on(typeReference));
}
} else {
trace.report(FINAL_SUPERTYPE.on(typeReference));
}
}
}
}
public static boolean isPrimitiveType(@NotNull JetType type) {
ClassifierDescriptor descriptor = type.getConstructor().getDeclarationDescriptor();
return !type.isMarkedNullable()
&& descriptor != null
&& FQ_NAMES.primitiveTypes.contains(DescriptorUtils.getFqName(descriptor));
}