@NotNull
public Collection<JetType> getSupertypesForClosure(@NotNull FunctionDescriptor descriptor) {
ReceiverParameterDescriptor receiverParameter = descriptor.getReceiverParameter();
List<TypeProjection> typeArguments = new ArrayList<TypeProjection>(2);
ClassDescriptor classDescriptor;
if (receiverParameter != null) {
classDescriptor = extensionFunctionImpl;
typeArguments.add(new TypeProjectionImpl(receiverParameter.getType()));
} else {
classDescriptor = functionImpl;
}
//noinspection ConstantConditions
typeArguments.add(new TypeProjectionImpl(descriptor.getReturnType()));
JetType functionImplType =
new JetTypeImpl(
classDescriptor.getDefaultType().getAnnotations(),
classDescriptor.getTypeConstructor(),
false,
typeArguments,
classDescriptor.getMemberScope(typeArguments));
JetType functionType =
KotlinBuiltIns.getInstance()
.getFunctionType(
Annotations.EMPTY,
receiverParameter == null ? null : receiverParameter.getType(),
DescriptorUtils.getValueParametersTypes(descriptor.getValueParameters()),
descriptor.getReturnType());
return Arrays.asList(functionImplType, functionType);
}
@NotNull
public Collection<JetType> getSupertypesForCallableReference(
@NotNull FunctionDescriptor descriptor) {
ReceiverParameterDescriptor receiverParameter = descriptor.getReceiverParameter();
ReceiverParameterDescriptor expectedThisObject = descriptor.getExpectedThisObject();
List<TypeProjection> typeArguments = new ArrayList<TypeProjection>(2);
ClassDescriptor classDescriptor;
JetType receiverType;
if (receiverParameter != null) {
classDescriptor = kExtensionFunctionImpl;
receiverType = receiverParameter.getType();
typeArguments.add(new TypeProjectionImpl(receiverType));
} else if (expectedThisObject != null) {
classDescriptor = kMemberFunctionImpl;
receiverType = expectedThisObject.getType();
typeArguments.add(new TypeProjectionImpl(receiverType));
} else {
classDescriptor = kFunctionImpl;
receiverType = null;
}
//noinspection ConstantConditions
typeArguments.add(new TypeProjectionImpl(descriptor.getReturnType()));
JetType kFunctionImplType =
new JetTypeImpl(
classDescriptor.getDefaultType().getAnnotations(),
classDescriptor.getTypeConstructor(),
false,
typeArguments,
classDescriptor.getMemberScope(typeArguments));
JetType kFunctionType =
reflectionTypes.getKFunctionType(
Annotations.EMPTY,
receiverType,
DescriptorUtils.getValueParametersTypes(descriptor.getValueParameters()),
descriptor.getReturnType(),
receiverParameter != null);
return Arrays.asList(kFunctionImplType, kFunctionType);
}