@NotNull
public static TypeSubstitutor createSubstitutorForTypeParameters(
@NotNull
Map<TypeParameterDescriptor, TypeParameterDescriptorImpl> originalToAltTypeParameters) {
Map<TypeConstructor, TypeProjection> typeSubstitutionContext =
new HashMap<TypeConstructor, TypeProjection>();
for (Map.Entry<TypeParameterDescriptor, TypeParameterDescriptorImpl>
originalToAltTypeParameter : originalToAltTypeParameters.entrySet()) {
typeSubstitutionContext.put(
originalToAltTypeParameter.getKey().getTypeConstructor(),
new TypeProjectionImpl(originalToAltTypeParameter.getValue().getDefaultType()));
}
return TypeSubstitutor.create(typeSubstitutionContext);
}
@NotNull
public static Map<TypeParameterDescriptor, TypeParameterDescriptorImpl>
recreateTypeParametersAndReturnMapping(
@NotNull List<TypeParameterDescriptor> originalParameters,
@Nullable DeclarationDescriptor newOwner) {
// LinkedHashMap to save the order of type parameters
Map<TypeParameterDescriptor, TypeParameterDescriptorImpl> result =
new LinkedHashMap<TypeParameterDescriptor, TypeParameterDescriptorImpl>();
for (TypeParameterDescriptor typeParameter : originalParameters) {
result.put(
typeParameter,
TypeParameterDescriptorImpl.createForFurtherModification(
newOwner == null ? typeParameter.getContainingDeclaration() : newOwner,
typeParameter.getAnnotations(),
typeParameter.isReified(),
typeParameter.getVariance(),
typeParameter.getName(),
typeParameter.getIndex()));
}
return result;
}