private static void Compact([NotNull] ExternalAnnotationsMap externalAnnotations)
{
foreach (string key in externalAnnotations.Keys.ToList())
{
MemberNullabilityInfo annotation = externalAnnotations[key];
if (!HasNullabilityDefined(annotation))
{
externalAnnotations.Remove(key);
}
}
}
private static bool HasNullabilityDefined([NotNull] MemberNullabilityInfo info)
{
return(info.HasNullabilityDefined || info.ParametersNullability.Count > 0);
}
public void ProcessDocument([NotNull] TextReader reader, [NotNull] ExternalAnnotationsMap result)
{
Guard.NotNull(reader, nameof(reader));
Guard.NotNull(result, nameof(result));
XElement assemblyElement = XDocument.Load(reader).Element("assembly");
if (assemblyElement != null)
{
// Known limitation: we are not entirely correct here, by ignoring assembly info.
// You'll run into this, for example, with the next block of code:
//
// public class MyEnumerator : IEnumerator
// {
// public bool MoveNext() { throw new System.NotImplementedException(); }
//
// public void Reset() { }
//
// [CanBeNull]
// public object Current { get; }
// }
//
// When you set project properties to target .NET Framework v4.5, Resharper is fine with
// the [CanBeNull]. But if you switch to target .NET Framework v2, then Resharper grays
// out the [CanBeNull], with hover message "Base declaration has the same annotation".
// This is because the external annotation file "2.0.0.0.Interfaces.Nullness.Gen.xml"
// contains the following snapshot:
//
// <?xml version="1.0" encoding="utf-8"?>
// <assembly name="mscorlib, Version=2.0.0.0">
// <member name="P:System.Collections.IEnumerator.Current">
// <attribute ctor="M:JetBrains.Annotations.CanBeNullAttribute.#ctor" />
// </member>
// </assembly>
//
// But when targeting the .NET Framework v4.5, mscorlib v4.0.0.0 is used, so this snapshot
// does not apply. To support this, we need to add assembly info to our data structure
// for each symbol. That makes the dataset grow a lot, taking longer to load/save.
foreach (XElement memberElement in assemblyElement.Elements("member"))
{
string memberType = "?";
string memberName = memberElement.Attribute("name").Value;
if (memberName.Length > 2 && memberName[1] == ':')
{
memberType = memberName[0].ToString();
memberName = memberName.Substring(2);
}
MemberNullabilityInfo memberInfo = result.ContainsKey(memberName)
? result[memberName]
: new MemberNullabilityInfo(memberType);
foreach (XElement childElement in memberElement.Elements())
{
if (childElement.Name == "parameter")
{
string parameterName = childElement.Attribute("name").Value;
foreach (XElement attributeElement in childElement.Elements("attribute"))
{
if (ElementHasNullabilityDefinition(attributeElement))
{
memberInfo.ParametersNullability[parameterName] = true;
}
}
}
if (childElement.Name == "attribute")
{
if (ElementHasNullabilityDefinition(childElement))
{
memberInfo.HasNullabilityDefined = true;
}
}
}
result[memberName] = memberInfo;
}
}
}