private bool Equals(ItemListExpression other)
{
if (_arguments.Length != other._arguments.Length)
{
return(false);
}
for (int i = 0; i < _arguments.Length; ++i)
{
if (!Equals(_arguments[i], other._arguments[i]))
{
return(false);
}
}
return(true);
}
private static bool OptimizeItemList(ItemListExpression expression, out IExpression optimized)
{
optimized = null;
var arguments = new List <IExpression>();
bool optimizedAnything = false;
foreach (IExpression argument in expression.Arguments)
{
IExpression optimizedItem = Run(argument);
if (!ReferenceEquals(optimizedItem, argument))
{
optimizedAnything = true;
}
var childList = optimizedItem as ItemListExpression;
if (childList != null)
{
arguments.AddRange(childList.Arguments);
optimizedAnything = true;
}
else
{
arguments.Add(optimizedItem);
}
}
if (arguments.Count == 1)
{
optimized = arguments[0];
return(true);
}
if (!optimizedAnything)
{
return(false);
}
optimized = new ItemListExpression(arguments);
return(true);
}