public static T Annotation <T>(this object target, Expression <Funclet> expression, object key)
{
ClassAnnotation classAnnotation = GetOrCreateAnnotation(target);
MemberAnnotation memberAnnotation = classAnnotation.ForMember(expression);
return((T)memberAnnotation[key]);
}
public static ClassAnnotation Annotate <T>(this object target, params Func <string, T>[] args)
{
ClassAnnotation annotation = GetOrCreateAnnotation(target);
annotation.Annotate(args);
return(annotation);
}
public static bool HasAnnotation(this object target, string name)
{
ClassAnnotation annotation = GetAnnotation(target);
if (annotation == null)
{
return(false);
}
return(annotation.HasKey(name));
}
private static ClassAnnotation GetOrCreateAnnotation(object key)
{
_annotations.RemoveCollectedEntries();
ClassAnnotation annotation;
if (!_annotations.TryGetValue(key, out annotation))
{
lock (_annotations)
{
if (!_annotations.TryGetValue(key, out annotation))
{
annotation = new ClassAnnotation(key);
_annotations.Add(key, annotation);
}
}
}
return(annotation);
}
public static MemberAnnotation Annotate <T>(this object target, Expression <Proc> expression, params Func <string, T>[] args)
{
ClassAnnotation annotation = GetOrCreateAnnotation(target);
return(annotation.Annotate(expression, args));
}
public static void Annotate <T>(this object target, object key, T value)
{
ClassAnnotation annotation = GetOrCreateAnnotation(target);
annotation[key] = value;
}
public static void ClearAnnotations(this object target)
{
ClassAnnotation annotation = GetOrCreateAnnotation(target);
annotation.Clear();
}
public static void ClearAnnotation(this object target, object key)
{
ClassAnnotation annotation = GetOrCreateAnnotation(target);
annotation.Remove(key);
}
public static T Annotation <T>(this object target, object key)
{
ClassAnnotation annotation = GetOrCreateAnnotation(target);
return((T)annotation[key]);
}
public MemberAnnotation(MemberInfo member, ClassAnnotation classAnnotation)
{
_member = member;
_classAnnotation = classAnnotation;
}