private void computeValueParameters( @NotNull List<ValueParameterDescriptor> parameterDescriptors) { if (parameterDescriptors.size() != altFunDeclaration.getValueParameters().size()) { throw new AlternativeSignatureMismatchException( "Method signature has %d value parameters, but alternative signature has %d", parameterDescriptors.size(), altFunDeclaration.getValueParameters().size()); } List<ValueParameterDescriptor> altParamDescriptors = new ArrayList<ValueParameterDescriptor>(); for (int i = 0, size = parameterDescriptors.size(); i < size; i++) { ValueParameterDescriptor originalParameterDescriptor = parameterDescriptors.get(i); JetParameter annotationValueParameter = altFunDeclaration.getValueParameters().get(i); //noinspection ConstantConditions JetTypeElement alternativeTypeElement = annotationValueParameter.getTypeReference().getTypeElement(); assert alternativeTypeElement != null; JetType alternativeType; JetType alternativeVarargElementType; JetType originalParamVarargElementType = originalParameterDescriptor.getVarargElementType(); if (originalParamVarargElementType == null) { if (annotationValueParameter.isVarArg()) { throw new AlternativeSignatureMismatchException( "Parameter in method signature is not vararg, but in alternative signature it is vararg"); } alternativeType = TypeTransformingVisitor.computeType( alternativeTypeElement, originalParameterDescriptor.getType(), originalToAltTypeParameters, MEMBER_SIGNATURE_CONTRAVARIANT); alternativeVarargElementType = null; } else { if (!annotationValueParameter.isVarArg()) { throw new AlternativeSignatureMismatchException( "Parameter in method signature is vararg, but in alternative signature it is not"); } alternativeVarargElementType = TypeTransformingVisitor.computeType( alternativeTypeElement, originalParamVarargElementType, originalToAltTypeParameters, MEMBER_SIGNATURE_CONTRAVARIANT); alternativeType = KotlinBuiltIns.getInstance().getArrayType(alternativeVarargElementType); } Name altName = annotationValueParameter.getNameAsName(); altParamDescriptors.add( new ValueParameterDescriptorImpl( originalParameterDescriptor.getContainingDeclaration(), null, originalParameterDescriptor.getIndex(), originalParameterDescriptor.getAnnotations(), altName != null ? altName : originalParameterDescriptor.getName(), alternativeType, originalParameterDescriptor.declaresDefaultValue(), alternativeVarargElementType)); } altValueParameters = altParamDescriptors; }