/// <summary>
/// Executes the specified indexer method.
/// </summary>
/// <param name="mdesc">The method descriptor</param>
/// <param name="script">The script.</param>
/// <param name="obj">The object.</param>
/// <param name="index">The indexer parameter</param>
/// <param name="value">The dynvalue to set on a setter, or null.</param>
/// <returns></returns>
/// <exception cref="System.NotImplementedException"></exception>
protected virtual DynValue ExecuteIndexer(StandardUserDataOverloadedMethodDescriptor mdesc, Script script, object obj, DynValue index, DynValue value)
{
var callback = mdesc.GetCallback(script, obj);
IList <DynValue> values;
if (index.Type == DataType.Tuple)
{
if (value == null)
{
values = index.Tuple;
}
else
{
values = new List <DynValue>(index.Tuple);
values.Add(value);
}
}
else
{
if (value == null)
{
values = new DynValue[] { index };
}
else
{
values = new DynValue[] { index, value };
}
}
CallbackArguments args = new CallbackArguments(values, false);
ScriptExecutionContext execCtx = script.CreateDynamicExecutionContext();
return(callback(execCtx, args));
}
/// <summary>
/// Tries to perform an indexing operation by checking newly added extension methods for the given indexName.
/// </summary>
/// <param name="script">The script.</param>
/// <param name="obj">The object.</param>
/// <param name="indexName">Member name to be indexed.</param>
/// <returns></returns>
/// <exception cref="System.NotImplementedException"></exception>
private DynValue TryIndexOnExtMethod(Script script, object obj, string indexName)
{
List <StandardUserDataMethodDescriptor> methods = UserData.GetExtensionMethodsByName(indexName)
.Where(d => d.ExtensionMethodType != null && d.ExtensionMethodType.IsAssignableFrom(this.Type))
.ToList();
if (methods != null && methods.Count > 0)
{
var ext = new StandardUserDataOverloadedMethodDescriptor(indexName, this.Type);
ext.SetExtensionMethodsSnapshot(UserData.GetExtensionMethodsChangeVersion(), methods);
m_Methods.Add(indexName, ext);
return(DynValue.NewCallback(ext.GetCallback(script, obj)));
}
return(null);
}
