/// <summary>
/// Returns an object instance to serve as the next object in the prototype chain.
/// </summary>
/// <param name="engine"> The associated script engine. </param>
/// <param name="instance"> The CLR object instance to wrap. </param>
/// <returns> The next object in the prototype chain. </returns>
private static ObjectInstance GetPrototypeObject(ScriptEngine engine, object instance)
{
if (engine == null)
{
throw new ArgumentNullException("engine");
}
if (instance == null)
{
throw new ArgumentNullException("instance");
}
return(ClrInstanceTypeWrapper.FromCache(engine, instance.GetType()));
}
/// <summary>
/// Returns an object instance to serve as the next object in the prototype chain.
/// </summary>
/// <param name="engine"> The associated script engine. </param>
/// <param name="type"> The CLR type to wrap. </param>
/// <returns> The next object in the prototype chain. </returns>
private static ObjectInstance GetPrototypeObject(ScriptEngine engine, Type type)
{
if (engine == null)
{
throw new ArgumentNullException("engine");
}
if (type == null)
{
throw new ArgumentNullException("type");
}
if (type.BaseType == null)
{
return(null);
}
return(ClrInstanceTypeWrapper.FromCache(engine, type.BaseType));
}
// INITIALIZATION
//_________________________________________________________________________________________
/// <summary>
/// Retrieves a ClrInstanceTypeWrapper object from the cache, if possible, or creates it
/// otherwise.
/// </summary>
/// <param name="engine"> The associated script engine. </param>
/// <param name="type"> The CLR type to wrap. </param>
public static ClrInstanceTypeWrapper FromCache(ScriptEngine engine, Type type)
{
if (!engine.EnableExposedClrTypes)
{
throw new JavaScriptException(engine, "TypeError", "Unsupported type: CLR types are not supported. Enable CLR types by setting the ScriptEngine's EnableExposedClrTypes property to true.");
}
ClrInstanceTypeWrapper cachedInstance;
if (engine.InstanceTypeWrapperCache.TryGetValue(type, out cachedInstance))
{
return(cachedInstance);
}
var newInstance = new ClrInstanceTypeWrapper(engine, type);
engine.InstanceTypeWrapperCache.Add(type, newInstance);
return(newInstance);
}