public static object ElementAt(object items, object index)
{
var arr = items as SequenceValue;
if (arr != null)
{
if (!(index is decimal))
{
return(Undefined.Value);
}
var dec = (decimal)index;
if (dec != Math.Floor(dec))
{
return(Undefined.Value);
}
var idx = (int)dec;
if (idx >= arr.Elements.Count())
{
return(Undefined.Value);
}
return(Representation.Represent(arr.Elements.ElementAt(idx)));
}
var dict = items as StructureValue;
if (dict != null)
{
var s = index as string;
if (s == null)
{
return(Undefined.Value);
}
LogEventPropertyValue value;
if (!LinqExpressionCompiler.TryGetStructurePropertyValue(dict, s, out value))
{
return(Undefined.Value);
}
return(Representation.Represent(value));
}
return(Undefined.Value);
}
public static object _Internal_In(object item, object collection)
{
if (collection is SequenceValue arr)
{
for (var i = 0; i < arr.Elements.Count; ++i)
{
if (UnboxedEqualHelper(Representation.Represent(arr.Elements[i]), item))
{
return(true);
}
}
return(false);
}
return(Undefined.Value);
}
public static object _Internal_Any(object items, object predicate)
{
if (!(predicate is Func <object, object> pred))
{
return(Undefined.Value);
}
if (items is SequenceValue arr)
{
return(arr.Elements.Any(e => true.Equals(pred(Representation.Represent(e)))));
}
if (items is StructureValue structure)
{
return(structure.Properties.Any(e => true.Equals(pred(Representation.Represent(e.Value)))));
}
return(Undefined.Value);
}