static bool ShouldSkipProperty(MemberConfig m)
{
var p = (PropertyInfo)m.Member;
// There's no way we can serialize a prop that we can't write.
// If it would have a { private set; } that would work, but it doesn't.
var accessors = p.GetAccessors(true);
if (accessors.Length <= 1)
{
// It's a "computed" property, which has no concept of writing.
m.ExcludeWithReason("Computed Property (has no 'set' function, not even a private one)");
return(true);
}
return(false);
}
// Use attributes on the members to further specialize the settings.
// We're only setting some *defaults* here, that can later be overriden some more.
internal static void ApplyMemberAttributes(MemberConfig memberConfig)
{
var type = memberConfig.TypeConfig.Type;
var memberInfo = memberConfig.Member;
// Skip compiler generated
if (memberConfig.IsCompilerGenerated)
{
if (memberConfig.TypeConfig.Config.Advanced.SkipCompilerGeneratedFields)
{
memberConfig.ExcludeWithReason("Compiler generated field");
return;
}
}
if (memberInfo is FieldInfo f)
{
var readOnlyConfig = f.GetCustomAttribute <ReadonlyConfigAttribute>(true);
if (readOnlyConfig != null)
{
memberConfig.ReadonlyFieldHandling = readOnlyConfig.ReadonlyFieldHandling;
}
}
else if (memberInfo is PropertyInfo p)
{
// prop: skip computed
if (ShouldSkipProperty(memberConfig))
{
return;
}
}
else
{
throw new InvalidOperationException(memberInfo.Name + " must be a field or a property");
}
// [Include] / [Exclude] / [NonSerialized]
var hasExclude = memberInfo.GetCustomAttribute <ExcludeAttribute>(true) != null;
var hasInclude = memberInfo.GetCustomAttribute <IncludeAttribute>(true) != null;
var hasNonSerialized = memberInfo.GetCustomAttribute <NonSerializedAttribute>(true) != null;
if (hasInclude && (hasExclude || hasNonSerialized))
{
throw new Exception($"Member '{memberInfo.Name}' on type '{type.Name}' has both [Include] and [Exclude] (or [NonSerialized]) !");
}
if (hasExclude)
{
memberConfig.ExcludeWithReason("[Exclude] attribute");
}
if (hasNonSerialized)
{
memberConfig.HasNonSerialized = true;
}
if (hasInclude)
{
memberConfig.SetIncludeWithReason(SerializationOverride.ForceInclude, "[Include] attribute on member");
}
// Success: persistent name (from attribute or normal member name)
var prevName = memberInfo.GetCustomAttribute <PreviousNameAttribute>();
if (prevName != null)
{
memberConfig.PersistentName = prevName.Name;
//VerifyName(attrib.Name);
//foreach (var n in attrib.AlternativeNames)
// VerifyName(n);
}
}
