internal override Result Eval(Evaluator evaluater, Result[] argArray)
{
int num2;
object obj3;
int num3;
if (argArray.Length < 2)
{
throw new ArgumentException();
}
object obj2 = argArray[0].Value;
if (obj2 == null)
{
throw new ArgumentException();
}
int num = argArray.Length - 1;
Type type = null;
BindingFlags bindingAttr = BindingFlags.Default;
if (obj2 is Type)
{
type = (Type)obj2;
obj2 = null;
bindingAttr = BindingFlags.Static;
}
else
{
type = obj2.GetType();
bindingAttr = BindingFlags.Instance;
}
bindingAttr = BindingFlags.Public;
Type[] types = new Type[num];
object[] index = new object[num];
for (num2 = 0; num2 < num; num2++)
{
types[num2] = argArray[num2 + 1].Type;
index[num2] = argArray[num2 + 1].Value;
}
Binder defaultBinder = Type.DefaultBinder;
PropertyInfo info = type.GetProperty("Item", bindingAttr, defaultBinder, null, types, null);
if (info == null)
{
info = type.GetProperty("Items", bindingAttr, defaultBinder, null, types, null);
}
if (info != null)
{
return(new Result(info.PropertyType, info.GetValue(obj2, index)));
}
if (obj2 == null)
{
throw new ArgumentException();
}
if (obj2 is string)
{
string str = (string)obj2;
num3 = (int)ConvertHelper.ChangeType(argArray[1].Value, typeof(int));
obj3 = str[num3];
return(new Result(typeof(char), obj3));
}
if (obj2 is Array)
{
Array array = (Array)obj2;
if (array.Rank != (argArray.Length - 1))
{
throw new ArgumentException();
}
int[] indices = new int[num];
for (num2 = 0; num2 < num; num2++)
{
indices[num2] = (int)ConvertHelper.ChangeType(argArray[num2 + 1].Value, typeof(int));
}
obj3 = array.GetValue(indices);
if (obj3 != null)
{
return(new Result(obj3.GetType(), obj3));
}
return(new Result(null, null));
}
if (!(obj2 is IList))
{
throw new ArgumentException();
}
IList list = (IList)obj2;
if (argArray.Length != 2)
{
throw new ArgumentException();
}
num3 = (int)ConvertHelper.ChangeType(argArray[1].Value, typeof(int));
obj3 = list[num3];
if (obj3 != null)
{
return(new Result(obj3.GetType(), obj3));
}
return(new Result(null, null));
}