public static int GetMaxVersion(IEnumerable <FieldInfo> fields)
{
int version = -1;
foreach (var f in fields)
{
PersistencyHelper.GetPersistentFieldInfo(f, out PersistentFieldAttribute info);
if (info.AvalailableSince > version)
{
version = info.AvalailableSince;
}
}
return(version);
}
public static IEnumerable <string> RestorePersistentFields(object obj, SerializationInfo info, IEnumerable <FieldInfo> fields, int version)
{
List <string> persistentNames = new List <string>();
foreach (var f in fields)
{
// the version is restored at this point
if (PersistencyHelper.GetPersistentFieldInfo(f, out PersistentFieldAttribute fieldInfo))
{
if (fieldInfo.AvalailableSince <= version)
{
var val = info.GetValue(fieldInfo.Name, f.FieldType);
f.SetValue(obj, val);
persistentNames.Add(fieldInfo.Name);
}
else
{
Assert.True(fieldInfo.HasDefault, "The field {0} cannot be restored from the current stream",
fieldInfo.Name);
}
}
}
return(persistentNames);
}